]> gitweb.ps.run Git - ps-gitweb/commitdiff
Initial commit
authorPatrick <patrick.schoenberger@posteo.de>
Fri, 28 Nov 2025 11:08:16 +0000 (12:08 +0100)
committerPatrick <patrick.schoenberger@posteo.de>
Fri, 28 Nov 2025 11:08:16 +0000 (12:08 +0100)
24 files changed:
GIT-VERSION-FILE [new file with mode: 0644]
GIT-VERSION-FILE.in [new file with mode: 0644]
GIT-VERSION-GEN [new file with mode: 0755]
Makefile [new file with mode: 0644]
config.mak.uname [new file with mode: 0644]
gitweb/GITWEB-BUILD-OPTIONS.in [new file with mode: 0644]
gitweb/INSTALL [new file with mode: 0644]
gitweb/Makefile [new file with mode: 0644]
gitweb/README [new file with mode: 0644]
gitweb/generate-gitweb-cgi.sh [new file with mode: 0755]
gitweb/generate-gitweb-js.sh [new file with mode: 0755]
gitweb/gitweb.perl [new file with mode: 0755]
gitweb/meson.build [new file with mode: 0644]
gitweb/static/git-favicon.png [new file with mode: 0644]
gitweb/static/git-logo.png [new file with mode: 0644]
gitweb/static/gitweb.css [new file with mode: 0644]
gitweb/static/js/README [new file with mode: 0644]
gitweb/static/js/adjust-timezone.js [new file with mode: 0644]
gitweb/static/js/blame_incremental.js [new file with mode: 0644]
gitweb/static/js/javascript-detection.js [new file with mode: 0644]
gitweb/static/js/lib/common-lib.js [new file with mode: 0644]
gitweb/static/js/lib/cookies.js [new file with mode: 0644]
gitweb/static/js/lib/datetime.js [new file with mode: 0644]
shared.mak [new file with mode: 0644]

diff --git a/GIT-VERSION-FILE b/GIT-VERSION-FILE
new file mode 100644 (file)
index 0000000..37c6caa
--- /dev/null
@@ -0,0 +1 @@
+GIT_VERSION=2.52.GIT
diff --git a/GIT-VERSION-FILE.in b/GIT-VERSION-FILE.in
new file mode 100644 (file)
index 0000000..3789a48
--- /dev/null
@@ -0,0 +1 @@
+GIT_VERSION=@GIT_VERSION@
diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
new file mode 100755 (executable)
index 0000000..1f7af03
--- /dev/null
@@ -0,0 +1,106 @@
+#!/bin/sh
+
+DEF_VER=v2.52.GIT
+
+LF='
+'
+
+if test "$#" -lt 2 || test "$#" -gt 3
+then
+    echo >&2 "USAGE: $0 <SOURCE_DIR> (--format=<STRING>|<INPUT>) [<OUTPUT>]"
+    exit 1
+fi
+
+SOURCE_DIR="$1"
+
+case "$2" in
+--format=*)
+       INPUT="${2#--format=}"
+       ;;
+*)
+       if ! test -f "$2"
+       then
+               echo >&2 "Input is not a file: $2"
+               exit 1
+       fi
+       INPUT=$(cat "$2")
+       ;;
+esac
+
+OUTPUT="$3"
+
+# Protect us from reading Git version information outside of the Git directory
+# in case it is not a repository itself, but embedded in an unrelated
+# repository.
+GIT_CEILING_DIRECTORIES="$SOURCE_DIR/.."
+export GIT_CEILING_DIRECTORIES
+
+if test -z "$GIT_VERSION"
+then
+       # First see if there is a version file (included in release tarballs),
+       # then try git-describe, then default.
+       if test -f "$SOURCE_DIR"/version
+       then
+               VN=$(cat "$SOURCE_DIR"/version) || VN="$DEF_VER"
+       elif {
+                       test -d "$SOURCE_DIR/.git" ||
+                       test -d "${GIT_DIR:-.git}" ||
+                       test -f "$SOURCE_DIR"/.git;
+               } &&
+               VN=$(git -C "$SOURCE_DIR" describe --dirty --match="v[0-9]*" 2>/dev/null) &&
+               case "$VN" in
+               *$LF*) (exit 1) ;;
+               esac
+       then
+               VN=$(echo "$VN" | sed -e 's/-/./g');
+       else
+               VN="$DEF_VER"
+       fi
+
+       GIT_VERSION=$(expr "$VN" : v*'\(.*\)')
+fi
+
+if test -z "$GIT_BUILT_FROM_COMMIT"
+then
+       GIT_BUILT_FROM_COMMIT=$(git -C "$SOURCE_DIR" rev-parse -q --verify HEAD 2>/dev/null)
+fi
+
+if test -z "$GIT_DATE"
+then
+       GIT_DATE=$(git -C "$SOURCE_DIR" show --quiet --format='%as' 2>/dev/null)
+fi
+
+if test -z "$GIT_USER_AGENT"
+then
+       GIT_USER_AGENT="git/$GIT_VERSION"
+fi
+
+# While released Git versions only have three numbers, development builds also
+# have a fourth number that corresponds to the number of patches since the last
+# release.
+read GIT_MAJOR_VERSION GIT_MINOR_VERSION GIT_MICRO_VERSION GIT_PATCH_LEVEL trailing <<EOF
+$(echo "$GIT_VERSION" 0 0 0 0 | tr '.a-zA-Z-' ' ')
+EOF
+
+REPLACED=$(printf "%s\n" "$INPUT" | sed -e "s|@GIT_VERSION@|$GIT_VERSION|" \
+       -e "s|@GIT_MAJOR_VERSION@|$GIT_MAJOR_VERSION|" \
+       -e "s|@GIT_MINOR_VERSION@|$GIT_MINOR_VERSION|" \
+       -e "s|@GIT_MICRO_VERSION@|$GIT_MICRO_VERSION|" \
+       -e "s|@GIT_PATCH_LEVEL@|$GIT_PATCH_LEVEL|" \
+       -e "s|@GIT_BUILT_FROM_COMMIT@|$GIT_BUILT_FROM_COMMIT|" \
+       -e "s|@GIT_USER_AGENT@|$GIT_USER_AGENT|" \
+       -e "s|@GIT_DATE@|$GIT_DATE|"
+)
+
+if test -z "$OUTPUT"
+then
+       printf "%s\n" "$REPLACED"
+else
+       printf "%s\n" "$REPLACED" >"$OUTPUT".$$+
+       if ! test -f "$OUTPUT" || ! cmp "$OUTPUT".$$+ "$OUTPUT" >/dev/null
+       then
+               mv "$OUTPUT".$$+ "$OUTPUT"
+       else
+               rm "$OUTPUT".$$+
+       fi
+fi
diff --git a/Makefile b/Makefile
new file mode 100644 (file)
index 0000000..2a67546
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,4017 @@
+# The default target of this Makefile is...
+all::
+
+# Import tree-wide shared Makefile behavior and libraries
+include shared.mak
+
+# == Makefile defines ==
+#
+# These defines change the behavior of the Makefile itself, but have
+# no impact on what it builds:
+#
+# Define V=1 to have a more verbose compile.
+#
+# == Portability and optional library defines ==
+#
+# These defines indicate what Git can expect from the OS, what
+# libraries are available etc. Much of this is auto-detected in
+# config.mak.uname, or in configure.ac when using the optional "make
+# configure && ./configure" (see INSTALL).
+#
+# Define SHELL_PATH to a POSIX shell if your /bin/sh is broken.
+#
+# Define SANE_TOOL_PATH to a colon-separated list of paths to prepend
+# to PATH if your tools in /usr/bin are broken.
+#
+# Define SOCKLEN_T to a suitable type (such as 'size_t') if your
+# system headers do not define a socklen_t type.
+#
+# Define INLINE to a suitable substitute (such as '__inline' or '') if git
+# fails to compile with errors about undefined inline functions or similar.
+#
+# Define SNPRINTF_RETURNS_BOGUS if you are on a system which snprintf()
+# or vsnprintf() return -1 instead of number of characters which would
+# have been written to the final string if enough space had been available.
+#
+# Define FREAD_READS_DIRECTORIES if you are on a system which succeeds
+# when attempting to read from an fopen'ed directory (or even to fopen
+# it at all).
+#
+# Define OPEN_RETURNS_EINTR if your open() system call may return EINTR
+# when a signal is received (as opposed to restarting).
+#
+# Define NO_OPENSSL environment variable if you do not have OpenSSL.
+#
+# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
+#
+# Define HAVE_PATHS_H if you have paths.h and want to use the default PATH
+# it specifies.
+#
+# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
+# d_type in struct dirent (Cygwin 1.5, fixed in Cygwin 1.7).
+#
+# Define HAVE_STRINGS_H if you have strings.h and need it for strcasecmp.
+#
+# Define NO_STRCASESTR if you don't have strcasestr.
+#
+# Define NO_MEMMEM if you don't have memmem.
+#
+# Define NO_GETPAGESIZE if you don't have getpagesize.
+#
+# Define NO_STRLCPY if you don't have strlcpy.
+#
+# Define NO_STRTOUMAX if you don't have both strtoimax and strtoumax in the
+# C library. If your compiler also does not support long long or does not have
+# strtoull, define NO_STRTOULL.
+#
+# Define NO_SETENV if you don't have setenv in the C library.
+#
+# Define NO_UNSETENV if you don't have unsetenv in the C library.
+#
+# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
+#
+# Define MKDIR_WO_TRAILING_SLASH if your mkdir() can't deal with trailing slash.
+#
+# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
+# in the C library.
+#
+# Define NO_LIBGEN_H if you don't have libgen.h.
+#
+# Define NEEDS_LIBGEN if your libgen needs -lgen when linking
+#
+# Define NO_SYS_SELECT_H if you don't have sys/select.h.
+#
+# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
+# Enable it on Windows.  By default, symrefs are still used.
+#
+# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
+# tests.  These tests take up a significant amount of the total test time
+# but are not needed unless you plan to talk to SVN repos.
+#
+# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
+# installed in /sw, but don't want GIT to link against any libraries
+# installed there.  If defined you may specify your own (or Fink's)
+# include directories and library directories by defining CFLAGS
+# and LDFLAGS appropriately.
+#
+# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
+# have DarwinPorts installed in /opt/local, but don't want GIT to
+# link against any libraries installed there.  If defined you may
+# specify your own (or DarwinPort's) include directories and
+# library directories by defining CFLAGS and LDFLAGS appropriately.
+#
+# Define NO_APPLE_COMMON_CRYPTO if you are building on Darwin/Mac OS X
+# and do not want to use Apple's CommonCrypto library.  This allows you
+# to provide your own OpenSSL library, for example from MacPorts.
+#
+# Define NEEDS_CRYPTO_WITH_SSL if you need -lcrypto when using -lssl (Darwin).
+#
+# Define NEEDS_SSL_WITH_CRYPTO if you need -lssl when using -lcrypto (Darwin).
+#
+# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
+#
+# Define NEEDS_LIBINTL_BEFORE_LIBICONV if you need libintl before libiconv.
+#
+# Define NO_INTPTR_T if you don't have intptr_t or uintptr_t.
+#
+# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
+# Patrick Mauritz).
+#
+# Define NEEDS_RESOLV if linking with -lnsl and/or -lsocket is not enough.
+# Notably on Solaris hstrerror resides in libresolv and on Solaris 7
+# inet_ntop and inet_pton additionally reside there.
+#
+# Define NO_MMAP if you want to avoid mmap.
+#
+# Define MMAP_PREVENTS_DELETE if a file that is currently mmapped cannot be
+# deleted or cannot be replaced using rename().
+#
+# Define NO_POLL_H if you don't have poll.h.
+#
+# Define NO_SYS_POLL_H if you don't have sys/poll.h.
+#
+# Define NO_POLL if you do not have or don't want to use poll().
+# This also implies NO_POLL_H and NO_SYS_POLL_H.
+#
+# Define NEEDS_SYS_PARAM_H if you need to include sys/param.h to compile,
+# *PLEASE* REPORT to git@vger.kernel.org if your platform needs this;
+# we want to know more about the issue.
+#
+# Define NO_PTHREADS if you do not have or do not want to use Pthreads.
+#
+# Define NO_PREAD if you have a problem with pread() system call (e.g.
+# cygwin1.dll before v1.5.22).
+#
+# Define NO_SETITIMER if you don't have setitimer()
+#
+# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval
+# This also implies NO_SETITIMER
+#
+# Define NO_FAST_WORKING_DIRECTORY if accessing objects in pack files is
+# generally faster on your platform than accessing the working directory.
+#
+# Define NO_TRUSTABLE_FILEMODE if your filesystem may claim to support
+# the executable mode bit, but doesn't really do so.
+#
+# Define CSPRNG_METHOD to "arc4random" if your system has arc4random and
+# arc4random_buf, "libbsd" if your system has those functions from libbsd,
+# "getrandom" if your system has getrandom, "getentropy" if your system has
+# getentropy, "rtlgenrandom" for RtlGenRandom (Windows only), or "openssl" if
+# you'd want to use the OpenSSL CSPRNG.  You may set multiple options with
+# spaces, in which case a suitable option will be chosen.  If unset or set to
+# anything else, defaults to using "/dev/urandom".
+#
+# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
+# bits in mode values (e.g. z/OS defines I_SFMT to 0xFF000000 as opposed to the
+# usual 0xF000).
+#
+# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
+#
+# Define NO_UNIX_SOCKETS if your system does not offer unix sockets.
+#
+# Define NO_SOCKADDR_STORAGE if your platform does not have struct
+# sockaddr_storage.
+#
+# Define NO_ICONV if your libc does not properly support iconv.
+#
+# Define OLD_ICONV if your library has an old iconv(), where the second
+# (input buffer pointer) parameter is declared with type (const char **).
+#
+# Define ICONV_OMITS_BOM if your iconv implementation does not write a
+# byte-order mark (BOM) when writing UTF-16 or UTF-32 and always writes in
+# big-endian format.
+#
+# Define NO_DEFLATE_BOUND if your zlib does not have deflateBound. Define
+# ZLIB_NG if you want to use zlib-ng instead of zlib.
+#
+# Define NO_NORETURN if using buggy versions of gcc 4.6+ and profile feedback,
+# as the compiler can crash (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49299)
+#
+# Define USE_NSEC below if you want git to care about sub-second file mtimes
+# and ctimes. Note that you need recent glibc (at least 2.2.4) for this. On
+# Linux, kernel 2.6.11 or newer is required for reliable sub-second file times
+# on file systems with exactly 1 ns or 1 s resolution. If you intend to use Git
+# on other file systems (e.g. CEPH, CIFS, NTFS, UDF), don't enable USE_NSEC. See
+# Documentation/technical/racy-git.adoc for details.
+#
+# Define USE_ST_TIMESPEC if your "struct stat" uses "st_ctimespec" instead of
+# "st_ctim"
+#
+# Define NO_NSEC if your "struct stat" does not have "st_ctim.tv_nsec"
+# available.  This automatically turns USE_NSEC off.
+#
+# Define USE_STDEV below if you want git to care about the underlying device
+# change being considered an inode change from the update-index perspective.
+#
+# Define NO_ST_BLOCKS_IN_STRUCT_STAT if your platform does not have st_blocks
+# field that counts the on-disk footprint in 512-byte blocks.
+#
+# Define USE_ASCIIDOCTOR to use Asciidoctor instead of AsciiDoc to build the
+# documentation.
+#
+# Define ASCIIDOCTOR_EXTENSIONS_LAB to point to the location of the Asciidoctor
+# Extensions Lab if you have it available.
+#
+# Define PERL_PATH to the path of your Perl binary (usually /usr/bin/perl).
+#
+# Define NO_PERL if you do not want Perl scripts or libraries at all.
+#
+# Define NO_PERL_CPAN_FALLBACKS if you do not want to install bundled
+# copies of CPAN modules that serve as a fallback in case the modules
+# are not available on the system. This option is intended for
+# distributions that want to use their packaged versions of Perl
+# modules, instead of the fallbacks shipped with Git.
+#
+# Define NO_GITWEB if you do not want to build or install
+# 'gitweb'. Note that defining NO_PERL currently has the same effect
+# on not installing gitweb, but not on whether it's built in the
+# gitweb/ directory.
+#
+# Define PYTHON_PATH to the path of your Python binary (often /usr/bin/python
+# but /usr/bin/python2.7 or /usr/bin/python3 on some platforms).
+#
+# Define NO_PYTHON if you do not want Python scripts or libraries at all.
+#
+# Define NO_TCLTK if you do not want Tcl/Tk GUI.
+#
+# The TCL_PATH variable governs the location of the Tcl interpreter
+# used to optimize git-gui for your system.  Only used if NO_TCLTK
+# is not set.  Defaults to the bare 'tclsh'.
+#
+# The TCLTK_PATH variable governs the location of the Tcl/Tk interpreter.
+# If not set it defaults to the bare 'wish'. If it is set to the empty
+# string then NO_TCLTK will be forced (this is used by configure script).
+#
+# Define INTERNAL_QSORT to use Git's implementation of qsort(), which
+# is a simplified version of the merge sort used in glibc. This is
+# recommended if Git triggers O(n^2) behavior in your platform's qsort().
+#
+# Define HAVE_ISO_QSORT_S if your platform provides a qsort_s() that's
+# compatible with the one described in C11 Annex K.
+#
+# Define UNRELIABLE_FSTAT if your system's fstat does not return the same
+# information on a not yet closed file that lstat would return for the same
+# file after it was closed.
+#
+# Define OBJECT_CREATION_USES_RENAMES if your operating systems has problems
+# when hardlinking a file to another name and unlinking the original file right
+# away (some NTFS drivers seem to zero the contents in that scenario).
+#
+# Define INSTALL_SYMLINKS if you prefer to have everything that can be
+# symlinked between bin/ and libexec/ to use relative symlinks between
+# the two. This option overrides NO_CROSS_DIRECTORY_HARDLINKS and
+# NO_INSTALL_HARDLINKS which will also use symlinking by indirection
+# within the same directory in some cases, INSTALL_SYMLINKS will
+# always symlink to the final target directly.
+#
+# Define NO_CROSS_DIRECTORY_HARDLINKS if you plan to distribute the installed
+# programs as a tar, where bin/ and libexec/ might be on different file systems.
+#
+# Define NO_INSTALL_HARDLINKS if you prefer to use either symbolic links or
+# copies to install built-in git commands e.g. git-cat-file.
+#
+# Define SKIP_DASHED_BUILT_INS if you do not need the dashed versions of the
+# built-ins to be linked/copied at all.
+#
+# Define USE_NED_ALLOCATOR if you want to replace the platforms default
+# memory allocators with the nedmalloc allocator written by Niall Douglas.
+#
+# Define OVERRIDE_STRDUP to override the libc version of strdup(3).
+# This is necessary when using a custom allocator in order to avoid
+# crashes due to allocation and free working on different 'heaps'.
+# It's defined automatically if USE_NED_ALLOCATOR is set.
+#
+# Define NO_REGEX if your C library lacks regex support with REG_STARTEND
+# feature.
+#
+# Define USE_ENHANCED_BASIC_REGULAR_EXPRESSIONS if your C library provides
+# the flag REG_ENHANCED and you'd like to use it to enable enhanced basic
+# regular expressions.
+#
+# Define HAVE_DEV_TTY if your system can open /dev/tty to interact with the
+# user.
+#
+# Define JSMIN to point to JavaScript minifier that functions as
+# a filter to have gitweb.js minified.
+#
+# Define CSSMIN to point to a CSS minifier in order to generate a minified
+# version of gitweb.css
+#
+# Define DEFAULT_PAGER to a sensible pager command (defaults to "less") if
+# you want to use something different.  The value will be interpreted by the
+# shell at runtime when it is used.
+#
+# Define DEFAULT_EDITOR to a sensible editor command (defaults to "vi") if you
+# want to use something different.  The value will be interpreted by the shell
+# if necessary when it is used.  Examples:
+#
+#   DEFAULT_EDITOR='~/bin/vi',
+#   DEFAULT_EDITOR='$GIT_FALLBACK_EDITOR',
+#   DEFAULT_EDITOR='"C:\Program Files\Vim\gvim.exe" --nofork'
+#
+# Define COMPUTE_HEADER_DEPENDENCIES to "yes" if you want dependencies on
+# header files to be automatically computed, to avoid rebuilding objects when
+# an unrelated header file changes.  Define it to "no" to use the hard-coded
+# dependency rules.  The default is "auto", which means to use computed header
+# dependencies if your compiler is detected to support it.
+#
+# Define NATIVE_CRLF if your platform uses CRLF for line endings.
+#
+# Define GIT_USER_AGENT if you want to change how git identifies itself during
+# network interactions.  The default is "git/$(GIT_VERSION)".
+#
+# Define DEFAULT_HELP_FORMAT to "man", "info" or "html"
+# (defaults to "man") if you want to have a different default when
+# "git help" is called without a parameter specifying the format.
+#
+# Define GIT_TEST_INDEX_VERSION to 2, 3 or 4 to run the test suite
+# with a different indexfile format version.  If it isn't set the index
+# file format used is index-v[23].
+#
+# Define GIT_TEST_UTF8_LOCALE to preferred utf-8 locale for testing.
+# If it isn't set, fallback to $LC_ALL, $LANG or use the first utf-8
+# locale returned by "locale -a".
+#
+# Define HAVE_CLOCK_GETTIME if your platform has clock_gettime.
+#
+# Define HAVE_CLOCK_MONOTONIC if your platform has CLOCK_MONOTONIC.
+#
+# Define HAVE_SYNC_FILE_RANGE if your platform has sync_file_range.
+#
+# Define HAVE_BSD_SYSCTL if your platform has a BSD-compatible sysctl function.
+#
+# Define HAVE_GETDELIM if your system has the getdelim() function.
+#
+# Define FILENO_IS_A_MACRO if fileno() is a macro, not a real function.
+#
+# Define NEED_ACCESS_ROOT_HANDLER if access() under root may success for X_OK
+# even if execution permission isn't granted for any user.
+#
+# Define PAGER_ENV to a SP separated VAR=VAL pairs to define
+# default environment variables to be passed when a pager is spawned, e.g.
+#
+#    PAGER_ENV = LESS=FRX LV=-c
+#
+# to say "export LESS=FRX (and LV=-c) if the environment variable
+# LESS (and LV) is not set, respectively".
+#
+# Define TEST_SHELL_PATH if you want to use a shell besides SHELL_PATH for
+# running the test scripts (e.g., bash has better support for "set -x"
+# tracing).
+#
+# When cross-compiling, define HOST_CPU as the canonical name of the CPU on
+# which the built Git will run (for instance "x86_64").
+#
+# Define RUNTIME_PREFIX to configure Git to resolve its ancillary tooling and
+# support files relative to the location of the runtime binary, rather than
+# hard-coding them into the binary. Git installations built with RUNTIME_PREFIX
+# can be moved to arbitrary filesystem locations. RUNTIME_PREFIX also causes
+# Perl scripts to use a modified entry point header allowing them to resolve
+# support files at runtime.
+#
+# When using RUNTIME_PREFIX, define HAVE_BSD_KERN_PROC_SYSCTL if your platform
+# supports the KERN_PROC BSD sysctl function.
+#
+# When using RUNTIME_PREFIX, define PROCFS_EXECUTABLE_PATH if your platform
+# mounts a "procfs" filesystem capable of resolving the path of the current
+# executable. If defined, this must be the canonical path for the "procfs"
+# current executable path.
+#
+# When using RUNTIME_PREFIX, define HAVE_NS_GET_EXECUTABLE_PATH if your platform
+# supports calling _NSGetExecutablePath to retrieve the path of the running
+# executable.
+#
+# When using RUNTIME_PREFIX, define HAVE_ZOS_GET_EXECUTABLE_PATH if your platform
+# supports calling __getprogramdir and getprogname to retrieve the path of the
+# running executable.
+#
+# When using RUNTIME_PREFIX, define HAVE_WPGMPTR if your platform offers
+# the global variable _wpgmptr containing the absolute path of the current
+# executable (this is the case on Windows).
+#
+# INSTALL_STRIP can be set to "-s" to strip binaries during installation,
+# if your $(INSTALL) command supports the option.
+#
+# Define GENERATE_COMPILATION_DATABASE to "yes" to generate JSON compilation
+# database entries during compilation if your compiler supports it, using the
+# `-MJ` flag. The JSON entries will be placed in the `compile_commands/`
+# directory, and the JSON compilation database 'compile_commands.json' will be
+# created at the root of the repository.
+#
+# If your platform supports a built-in fsmonitor backend, set
+# FSMONITOR_DAEMON_BACKEND to the "<name>" of the corresponding
+# `compat/fsmonitor/fsm-listen-<name>.c` and
+# `compat/fsmonitor/fsm-health-<name>.c` files
+# that implement the `fsm_listen__*()` and `fsm_health__*()` routines.
+#
+# If your platform has OS-specific ways to tell if a repo is incompatible with
+# fsmonitor (whether the hook or IPC daemon version), set FSMONITOR_OS_SETTINGS
+# to the "<name>" of the corresponding `compat/fsmonitor/fsm-settings-<name>.c`
+# that implements the `fsm_os_settings__*()` routines.
+#
+# Define LINK_FUZZ_PROGRAMS if you want `make all` to also build the fuzz test
+# programs in oss-fuzz/.
+#
+# Define INCLUDE_LIBGIT_RS if you want `make all` and `make test` to build and
+# test the Rust crates in contrib/libgit-sys and contrib/libgit-rs.
+#
+# === Optional library: libintl ===
+#
+# Define NO_GETTEXT if you don't want Git output to be translated.
+# A translated Git requires GNU libintl or another gettext implementation,
+# plus libintl-perl at runtime.
+#
+# Define USE_GETTEXT_SCHEME and set it to 'fallthrough', if you don't trust
+# the installed gettext translation of the shell scripts output.
+#
+# Define HAVE_LIBCHARSET_H if you haven't set NO_GETTEXT and you can't
+# trust the langinfo.h's nl_langinfo(CODESET) function to return the
+# current character set. GNU and Solaris have a nl_langinfo(CODESET),
+# FreeBSD can use either, but MinGW and some others need to use
+# libcharset.h's locale_charset() instead.
+#
+# Define CHARSET_LIB to the library you need to link with in order to
+# use locale_charset() function.  On some platforms this needs to set to
+# -lcharset, on others to -liconv .
+#
+# Define LIBC_CONTAINS_LIBINTL if your gettext implementation doesn't
+# need -lintl when linking.
+#
+# Define NO_MSGFMT_EXTENDED_OPTIONS if your implementation of msgfmt
+# doesn't support GNU extensions like --check and --statistics
+#
+# === Optional library: libexpat ===
+#
+# Define NO_EXPAT if you do not have expat installed.  git-http-push is
+# not built, and you cannot push using http:// and https:// transports (dumb).
+#
+# Define EXPATDIR=/foo/bar if your expat header and library files are in
+# /foo/bar/include and /foo/bar/lib directories.
+#
+# Define EXPAT_NEEDS_XMLPARSE_H if you have an old version of expat (e.g.,
+# 1.1 or 1.2) that provides xmlparse.h instead of expat.h.
+
+# === Optional library: libcurl ===
+#
+# Define NO_CURL if you do not have libcurl installed.  git-http-fetch and
+# git-http-push are not built, and you cannot use http:// and https://
+# transports (neither smart nor dumb).
+#
+# Define CURLDIR=/foo/bar if your curl header and library files are in
+# /foo/bar/include and /foo/bar/lib directories.
+#
+# Define CURL_CONFIG to curl's configuration program that prints information
+# about the library (e.g., its version number).  The default is 'curl-config'.
+#
+# Define CURL_LDFLAGS to specify flags that you need to link when using libcurl,
+# if you do not want to rely on the libraries provided by CURL_CONFIG.  The
+# default value is a result of `curl-config --libs`.  An example value for
+# CURL_LDFLAGS is as follows:
+#
+#     CURL_LDFLAGS=-lcurl
+#
+# === Optional library: libpcre2 ===
+#
+# Define USE_LIBPCRE if you have and want to use libpcre. Various
+# commands such as log and grep offer runtime options to use
+# Perl-compatible regular expressions instead of standard or extended
+# POSIX regular expressions.
+#
+# Only libpcre version 2 is supported. USE_LIBPCRE2 is a synonym for
+# USE_LIBPCRE, support for the old USE_LIBPCRE1 has been removed.
+#
+# Define LIBPCREDIR=/foo/bar if your PCRE header and library files are
+# in /foo/bar/include and /foo/bar/lib directories.
+#
+# == Optional Rust support ==
+#
+# Define WITH_RUST if you want to include features and subsystems written in
+# Rust into Git. For now, Rust is still an optional feature of the build
+# process. With Git 3.0 though, Rust will always be enabled.
+#
+# Building Rust code requires Cargo.
+#
+# == SHA-1 and SHA-256 defines ==
+#
+# === SHA-1 backend ===
+#
+# ==== Security ====
+#
+# Due to the SHAttered (https://shattered.io) attack vector on SHA-1
+# it's strongly recommended to use the sha1collisiondetection
+# counter-cryptanalysis library for SHA-1 hashing.
+#
+# If you know that you can trust the repository contents, or where
+# potential SHA-1 attacks are otherwise mitigated the other backends
+# listed in "SHA-1 implementations" are faster than
+# sha1collisiondetection.
+#
+# ==== Default SHA-1 backend ====
+#
+# If no *_SHA1 backend is picked, the first supported one listed in
+# "SHA-1 implementations" will be picked.
+#
+# ==== Options common to all SHA-1 implementations ====
+#
+# Define SHA1_MAX_BLOCK_SIZE to limit the amount of data that will be hashed
+# in one call to the platform's SHA1_Update(). e.g. APPLE_COMMON_CRYPTO
+# wants 'SHA1_MAX_BLOCK_SIZE=1024L*1024L*1024L' defined.
+#
+# ==== SHA-1 implementations ====
+#
+# Define OPENSSL_SHA1 to link to the SHA-1 routines from the OpenSSL
+# library.
+#
+# Define BLK_SHA1 to make use of optimized C SHA-1 routines bundled
+# with git (in the block-sha1/ directory).
+#
+# Define APPLE_COMMON_CRYPTO_SHA1 to use Apple's CommonCrypto for
+# SHA-1.
+#
+# Define the same Makefile knobs as above, but suffixed with _UNSAFE to
+# use the corresponding implementations for unsafe SHA-1 hashing for
+# non-cryptographic purposes.
+#
+# If don't enable any of the *_SHA1 settings in this section, Git will
+# default to its built-in sha1collisiondetection library, which is a
+# collision-detecting sha1 This is slower, but may detect attempted
+# collision attacks.
+#
+# ==== Options for the sha1collisiondetection library ====
+#
+# Define DC_SHA1_EXTERNAL if you want to build / link
+# git with the external SHA1 collision-detect library.
+# Without this option, i.e. the default behavior is to build git with its
+# own built-in code (or submodule).
+#
+# Define DC_SHA1_SUBMODULE to use the
+# sha1collisiondetection shipped as a submodule instead of the
+# non-submodule copy in sha1dc/. This is an experimental option used
+# by the git project to migrate to using sha1collisiondetection as a
+# submodule.
+#
+# === SHA-256 backend ===
+#
+# ==== Security ====
+#
+# Unlike SHA-1 the SHA-256 algorithm does not suffer from any known
+# vulnerabilities, so any implementation will do.
+#
+# ==== SHA-256 implementations ====
+#
+# Define OPENSSL_SHA256 to use the SHA-256 routines in OpenSSL.
+#
+# Define NETTLE_SHA256 to use the SHA-256 routines in libnettle.
+#
+# Define GCRYPT_SHA256 to use the SHA-256 routines in libgcrypt.
+#
+# If don't enable any of the *_SHA256 settings in this section, Git
+# will default to its built-in sha256 implementation.
+#
+# == DEVELOPER defines ==
+#
+# Define DEVELOPER to enable more compiler warnings. Compiler version
+# and family are auto detected, but could be overridden by defining
+# COMPILER_FEATURES (see config.mak.dev). You can still set
+# CFLAGS="..." in combination with DEVELOPER enables, whether that's
+# for tweaking something unrelated (e.g. optimization level), or for
+# selectively overriding something DEVELOPER or one of the DEVOPTS
+# (see just below) brings in.
+#
+# When DEVELOPER is set, DEVOPTS can be used to control compiler
+# options.  This variable contains keywords separated by
+# whitespace. The following keywords are recognized:
+#
+#    no-error:
+#
+#        suppresses the -Werror that implicitly comes with
+#        DEVELOPER=1. Useful for getting the full set of errors
+#        without immediately dying, or for logging them.
+#
+#    extra-all:
+#
+#        The DEVELOPER mode enables -Wextra with a few exceptions. By
+#        setting this flag the exceptions are removed, and all of
+#        -Wextra is used.
+#
+#    no-pedantic:
+#
+#        Disable -pedantic compilation.
+
+# Set our default configuration.
+#
+# Among the variables below, these:
+#   gitexecdir
+#   template_dir
+#   sysconfdir
+# can be specified as a relative path some/where/else;
+# this is interpreted as relative to $(prefix) and "git" built with
+# RUNTIME_PREFIX flag will figure out (at runtime) where they are
+# based on the path to the executable.
+# Additionally, the following will be treated as relative by "git" if they
+# begin with "$(prefix)/":
+#   mandir
+#   infodir
+#   htmldir
+#   localedir
+#   perllibdir
+# This can help installing the suite in a relocatable way.
+
+prefix = $(HOME)
+bindir = $(prefix)/bin
+mandir = $(prefix)/share/man
+infodir = $(prefix)/share/info
+bash_completion_dir = $(prefix)/share/bash-completion/completions
+gitexecdir = libexec/git-core
+mergetoolsdir = $(gitexecdir)/mergetools
+sharedir = $(prefix)/share
+gitwebdir = $(sharedir)/gitweb
+gitwebstaticdir = $(gitwebdir)/static
+perllibdir = $(sharedir)/perl5
+localedir = $(sharedir)/locale
+template_dir = share/git-core/templates
+htmldir = $(prefix)/share/doc/git-doc
+ETC_GITCONFIG = $(sysconfdir)/gitconfig
+ETC_GITATTRIBUTES = $(sysconfdir)/gitattributes
+lib = lib
+# DESTDIR =
+pathsep = :
+
+bindir_relative = $(patsubst $(prefix)/%,%,$(bindir))
+mandir_relative = $(patsubst $(prefix)/%,%,$(mandir))
+infodir_relative = $(patsubst $(prefix)/%,%,$(infodir))
+gitexecdir_relative = $(patsubst $(prefix)/%,%,$(gitexecdir))
+localedir_relative = $(patsubst $(prefix)/%,%,$(localedir))
+htmldir_relative = $(patsubst $(prefix)/%,%,$(htmldir))
+perllibdir_relative = $(patsubst $(prefix)/%,%,$(perllibdir))
+
+export prefix bindir sharedir sysconfdir perllibdir localedir
+
+# Set our default programs
+CC = cc
+AR = ar
+RM = rm -f
+DIFF = diff
+TAR = tar
+FIND = find
+INSTALL = install
+TCL_PATH = tclsh
+TCLTK_PATH = wish
+XGETTEXT = xgettext
+MSGCAT = msgcat
+MSGFMT = msgfmt
+MSGMERGE = msgmerge
+CURL_CONFIG = curl-config
+GCOV = gcov
+STRIP = strip
+SPATCH = spatch
+LD = ld
+OBJCOPY = objcopy
+
+export TCL_PATH TCLTK_PATH
+
+# Set our default LIBS variables
+PTHREAD_LIBS = -lpthread
+
+# Guard against environment variables
+BUILTIN_OBJS =
+BUILT_INS =
+COMPAT_CFLAGS =
+COMPAT_OBJS =
+XDIFF_OBJS =
+GENERATED_H =
+EXTRA_CPPFLAGS =
+FUZZ_OBJS =
+FUZZ_PROGRAMS =
+GIT_OBJS =
+LIB_OBJS =
+LIBGIT_PUB_OBJS =
+SCALAR_OBJS =
+OBJECTS =
+OTHER_PROGRAMS =
+PROGRAM_OBJS =
+PROGRAMS =
+RUST_SOURCES =
+EXCLUDED_PROGRAMS =
+SCRIPT_PERL =
+SCRIPT_PYTHON =
+SCRIPT_SH =
+SCRIPT_LIB =
+TEST_BUILTINS_OBJS =
+TEST_OBJS =
+TEST_PROGRAMS_NEED_X =
+THIRD_PARTY_SOURCES =
+UNIT_TEST_PROGRAMS =
+UNIT_TEST_DIR = t/unit-tests
+UNIT_TEST_BIN = $(UNIT_TEST_DIR)/bin
+
+# Having this variable in your environment would break pipelines because
+# you cause "cd" to echo its destination to stdout.  It can also take
+# scripts to unexpected places.  If you like CDPATH, define it for your
+# interactive shell sessions without exporting it.
+unexport CDPATH
+
+SCRIPT_SH += git-difftool--helper.sh
+SCRIPT_SH += git-filter-branch.sh
+SCRIPT_SH += git-merge-octopus.sh
+SCRIPT_SH += git-merge-one-file.sh
+SCRIPT_SH += git-merge-resolve.sh
+SCRIPT_SH += git-mergetool.sh
+SCRIPT_SH += git-quiltimport.sh
+SCRIPT_SH += git-request-pull.sh
+SCRIPT_SH += git-submodule.sh
+SCRIPT_SH += git-web--browse.sh
+
+SCRIPT_LIB += git-mergetool--lib
+SCRIPT_LIB += git-sh-i18n
+SCRIPT_LIB += git-sh-setup
+
+SCRIPT_PERL += git-archimport.perl
+SCRIPT_PERL += git-cvsexportcommit.perl
+SCRIPT_PERL += git-cvsimport.perl
+SCRIPT_PERL += git-cvsserver.perl
+SCRIPT_PERL += git-send-email.perl
+SCRIPT_PERL += git-svn.perl
+
+SCRIPT_PYTHON += git-p4.py
+
+# Generated files for scripts
+SCRIPT_SH_GEN = $(patsubst %.sh,%,$(SCRIPT_SH))
+SCRIPT_PERL_GEN = $(patsubst %.perl,%,$(SCRIPT_PERL))
+SCRIPT_PYTHON_GEN = $(patsubst %.py,%,$(SCRIPT_PYTHON))
+
+# Individual rules to allow e.g.
+# "make -C ../.. SCRIPT_PERL=contrib/foo/bar.perl build-perl-script"
+# from subdirectories like contrib/*/
+.PHONY: build-perl-script build-sh-script build-python-script
+build-perl-script: $(SCRIPT_PERL_GEN)
+build-sh-script: $(SCRIPT_SH_GEN)
+build-python-script: $(SCRIPT_PYTHON_GEN)
+
+.PHONY: install-perl-script install-sh-script install-python-script
+install-sh-script: $(SCRIPT_SH_GEN)
+       $(INSTALL) $^ '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+install-perl-script: $(SCRIPT_PERL_GEN)
+       $(INSTALL) $^ '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+install-python-script: $(SCRIPT_PYTHON_GEN)
+       $(INSTALL) $^ '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+
+.PHONY: clean-perl-script clean-sh-script clean-python-script
+clean-sh-script:
+       $(RM) $(SCRIPT_SH_GEN)
+clean-perl-script:
+       $(RM) $(SCRIPT_PERL_GEN)
+clean-python-script:
+       $(RM) $(SCRIPT_PYTHON_GEN)
+
+SCRIPTS = $(SCRIPT_SH_GEN) \
+         $(SCRIPT_PERL_GEN) \
+         $(SCRIPT_PYTHON_GEN) \
+         git-instaweb
+
+ETAGS_TARGET = TAGS
+
+# Empty...
+EXTRA_PROGRAMS =
+
+# ... and all the rest that could be moved out of bindir to gitexecdir
+PROGRAMS += $(EXTRA_PROGRAMS)
+
+PROGRAM_OBJS += daemon.o
+PROGRAM_OBJS += http-backend.o
+PROGRAM_OBJS += imap-send.o
+PROGRAM_OBJS += sh-i18n--envsubst.o
+PROGRAM_OBJS += shell.o
+.PHONY: program-objs
+program-objs: $(PROGRAM_OBJS)
+
+# Binary suffix, set to .exe for Windows builds
+X =
+
+PROGRAMS += $(patsubst %.o,git-%$X,$(PROGRAM_OBJS))
+
+TEST_BUILTINS_OBJS += test-advise.o
+TEST_BUILTINS_OBJS += test-bitmap.o
+TEST_BUILTINS_OBJS += test-bloom.o
+TEST_BUILTINS_OBJS += test-bundle-uri.o
+TEST_BUILTINS_OBJS += test-cache-tree.o
+TEST_BUILTINS_OBJS += test-chmtime.o
+TEST_BUILTINS_OBJS += test-config.o
+TEST_BUILTINS_OBJS += test-crontab.o
+TEST_BUILTINS_OBJS += test-csprng.o
+TEST_BUILTINS_OBJS += test-date.o
+TEST_BUILTINS_OBJS += test-delete-gpgsig.o
+TEST_BUILTINS_OBJS += test-delta.o
+TEST_BUILTINS_OBJS += test-dir-iterator.o
+TEST_BUILTINS_OBJS += test-drop-caches.o
+TEST_BUILTINS_OBJS += test-dump-cache-tree.o
+TEST_BUILTINS_OBJS += test-dump-fsmonitor.o
+TEST_BUILTINS_OBJS += test-dump-split-index.o
+TEST_BUILTINS_OBJS += test-dump-untracked-cache.o
+TEST_BUILTINS_OBJS += test-env-helper.o
+TEST_BUILTINS_OBJS += test-example-tap.o
+TEST_BUILTINS_OBJS += test-find-pack.o
+TEST_BUILTINS_OBJS += test-fsmonitor-client.o
+TEST_BUILTINS_OBJS += test-genrandom.o
+TEST_BUILTINS_OBJS += test-genzeros.o
+TEST_BUILTINS_OBJS += test-getcwd.o
+TEST_BUILTINS_OBJS += test-hash-speed.o
+TEST_BUILTINS_OBJS += test-hash.o
+TEST_BUILTINS_OBJS += test-hashmap.o
+TEST_BUILTINS_OBJS += test-hexdump.o
+TEST_BUILTINS_OBJS += test-json-writer.o
+TEST_BUILTINS_OBJS += test-lazy-init-name-hash.o
+TEST_BUILTINS_OBJS += test-match-trees.o
+TEST_BUILTINS_OBJS += test-mergesort.o
+TEST_BUILTINS_OBJS += test-mktemp.o
+TEST_BUILTINS_OBJS += test-name-hash.o
+TEST_BUILTINS_OBJS += test-online-cpus.o
+TEST_BUILTINS_OBJS += test-pack-deltas.o
+TEST_BUILTINS_OBJS += test-pack-mtimes.o
+TEST_BUILTINS_OBJS += test-parse-options.o
+TEST_BUILTINS_OBJS += test-parse-pathspec-file.o
+TEST_BUILTINS_OBJS += test-partial-clone.o
+TEST_BUILTINS_OBJS += test-path-utils.o
+TEST_BUILTINS_OBJS += test-path-walk.o
+TEST_BUILTINS_OBJS += test-pcre2-config.o
+TEST_BUILTINS_OBJS += test-pkt-line.o
+TEST_BUILTINS_OBJS += test-proc-receive.o
+TEST_BUILTINS_OBJS += test-progress.o
+TEST_BUILTINS_OBJS += test-reach.o
+TEST_BUILTINS_OBJS += test-read-cache.o
+TEST_BUILTINS_OBJS += test-read-graph.o
+TEST_BUILTINS_OBJS += test-read-midx.o
+TEST_BUILTINS_OBJS += test-ref-store.o
+TEST_BUILTINS_OBJS += test-reftable.o
+TEST_BUILTINS_OBJS += test-regex.o
+TEST_BUILTINS_OBJS += test-rot13-filter.o
+TEST_BUILTINS_OBJS += test-repository.o
+TEST_BUILTINS_OBJS += test-revision-walking.o
+TEST_BUILTINS_OBJS += test-run-command.o
+TEST_BUILTINS_OBJS += test-scrap-cache-tree.o
+TEST_BUILTINS_OBJS += test-serve-v2.o
+TEST_BUILTINS_OBJS += test-sha1.o
+TEST_BUILTINS_OBJS += test-sha256.o
+TEST_BUILTINS_OBJS += test-sigchain.o
+TEST_BUILTINS_OBJS += test-simple-ipc.o
+TEST_BUILTINS_OBJS += test-string-list.o
+TEST_BUILTINS_OBJS += test-submodule-config.o
+TEST_BUILTINS_OBJS += test-submodule-nested-repo-config.o
+TEST_BUILTINS_OBJS += test-submodule.o
+TEST_BUILTINS_OBJS += test-subprocess.o
+TEST_BUILTINS_OBJS += test-trace2.o
+TEST_BUILTINS_OBJS += test-truncate.o
+TEST_BUILTINS_OBJS += test-userdiff.o
+TEST_BUILTINS_OBJS += test-wildmatch.o
+TEST_BUILTINS_OBJS += test-windows-named-pipe.o
+TEST_BUILTINS_OBJS += test-write-cache.o
+TEST_BUILTINS_OBJS += test-xml-encode.o
+TEST_BUILTINS_OBJS += test-zlib.o
+
+# Do not add more tests here unless they have extra dependencies. Add
+# them in TEST_BUILTINS_OBJS above.
+TEST_PROGRAMS_NEED_X += test-fake-ssh
+TEST_PROGRAMS_NEED_X += test-tool
+
+TEST_PROGRAMS = $(patsubst %,t/helper/%$X,$(TEST_PROGRAMS_NEED_X))
+
+# List built-in command $C whose implementation cmd_$C() is not in
+# builtin/$C.o but is linked in as part of some other command.
+BUILT_INS += $(patsubst builtin/%.o,git-%$X,$(BUILTIN_OBJS))
+
+BUILT_INS += git-cherry$X
+BUILT_INS += git-cherry-pick$X
+BUILT_INS += git-format-patch$X
+BUILT_INS += git-fsck-objects$X
+BUILT_INS += git-init$X
+BUILT_INS += git-maintenance$X
+BUILT_INS += git-merge-subtree$X
+BUILT_INS += git-restore$X
+BUILT_INS += git-show$X
+BUILT_INS += git-stage$X
+BUILT_INS += git-status$X
+BUILT_INS += git-switch$X
+BUILT_INS += git-version$X
+ifndef WITH_BREAKING_CHANGES
+BUILT_INS += git-whatchanged$X
+endif
+
+# what 'all' will build but not install in gitexecdir
+OTHER_PROGRAMS += git$X
+OTHER_PROGRAMS += scalar$X
+
+# what test wrappers are needed and 'install' will install, in bindir
+BINDIR_PROGRAMS_NEED_X += git
+BINDIR_PROGRAMS_NEED_X += scalar
+BINDIR_PROGRAMS_NEED_X += git-receive-pack
+BINDIR_PROGRAMS_NEED_X += git-shell
+BINDIR_PROGRAMS_NEED_X += git-upload-archive
+BINDIR_PROGRAMS_NEED_X += git-upload-pack
+
+BINDIR_PROGRAMS_NO_X += git-cvsserver
+
+# Set paths to tools early so that they can be used for version tests.
+ifndef SHELL_PATH
+       SHELL_PATH = /bin/sh
+endif
+ifndef PERL_PATH
+       PERL_PATH = /usr/bin/perl
+endif
+ifndef PYTHON_PATH
+       PYTHON_PATH = /usr/bin/python
+endif
+
+export PERL_PATH
+export PYTHON_PATH
+
+TEST_SHELL_PATH = $(SHELL_PATH)
+
+LIB_FILE = libgit.a
+
+ifdef DEBUG
+RUST_TARGET_DIR = target/debug
+else
+RUST_TARGET_DIR = target/release
+endif
+
+ifeq ($(uname_S),Windows)
+RUST_LIB = $(RUST_TARGET_DIR)/gitcore.lib
+else
+RUST_LIB = $(RUST_TARGET_DIR)/libgitcore.a
+endif
+
+GITLIBS = common-main.o $(LIB_FILE)
+EXTLIBS =
+
+GIT_USER_AGENT = git/$(GIT_VERSION)
+
+ifeq ($(wildcard sha1collisiondetection/lib/sha1.h),sha1collisiondetection/lib/sha1.h)
+DC_SHA1_SUBMODULE = auto
+endif
+
+# Set CFLAGS, LDFLAGS and other *FLAGS variables. These might be
+# tweaked by config.* below as well as the command-line, both of
+# which'll override these defaults.
+# Older versions of GCC may require adding "-std=gnu99" at the end.
+CFLAGS = -g -O2 -Wall
+LDFLAGS =
+CC_LD_DYNPATH = -Wl,-rpath,
+BASIC_CFLAGS = -I.
+BASIC_LDFLAGS =
+
+# library flags
+ARFLAGS = rcs
+PTHREAD_CFLAGS =
+
+# Rust flags
+CARGO_ARGS =
+ifndef V
+CARGO_ARGS += --quiet
+endif
+ifndef DEBUG
+CARGO_ARGS += --release
+endif
+
+# For the 'sparse' target
+SPARSE_FLAGS ?= -std=gnu99 -D__STDC_NO_VLA__
+SP_EXTRA_FLAGS =
+
+# For informing GIT-BUILD-OPTIONS of the SANITIZE=leak,address targets
+SANITIZE_LEAK =
+SANITIZE_ADDRESS =
+
+# For the 'coccicheck' target
+SPATCH_INCLUDE_FLAGS = --all-includes
+SPATCH_FLAGS =
+SPATCH_TEST_FLAGS =
+
+# If *.o files are present, have "coccicheck" depend on them, with
+# COMPUTE_HEADER_DEPENDENCIES this will speed up the common-case of
+# only needing to re-generate coccicheck results for the users of a
+# given API if it's changed, and not all files in the project. If
+# COMPUTE_HEADER_DEPENDENCIES=no this will be unset too.
+SPATCH_USE_O_DEPENDENCIES = YesPlease
+
+# Set SPATCH_CONCAT_COCCI to concatenate the contrib/cocci/*.cocci
+# files into a single contrib/cocci/ALL.cocci before running
+# "coccicheck".
+#
+# Pros:
+#
+# - Speeds up a one-shot run of "make coccicheck", as we won't have to
+#   parse *.[ch] files N times for the N *.cocci rules
+#
+# Cons:
+#
+# - Will make incremental development of *.cocci slower, as
+#   e.g. changing strbuf.cocci will re-run all *.cocci.
+#
+# - Makes error and performance analysis harder, as rules will be
+#   applied from a monolithic ALL.cocci, rather than
+#   e.g. strbuf.cocci. To work around this either undefine this, or
+#   generate a specific patch, e.g. this will always use strbuf.cocci,
+#   not ALL.cocci:
+#
+#      make contrib/coccinelle/strbuf.cocci.patch
+SPATCH_CONCAT_COCCI = YesPlease
+
+# Rebuild 'coccicheck' if $(SPATCH), its flags etc. change
+TRACK_SPATCH_DEFINES =
+TRACK_SPATCH_DEFINES += $(SPATCH)
+TRACK_SPATCH_DEFINES += $(SPATCH_INCLUDE_FLAGS)
+TRACK_SPATCH_DEFINES += $(SPATCH_FLAGS)
+TRACK_SPATCH_DEFINES += $(SPATCH_TEST_FLAGS)
+GIT-SPATCH-DEFINES: FORCE
+       @FLAGS='$(TRACK_SPATCH_DEFINES)'; \
+           if test x"$$FLAGS" != x"`cat GIT-SPATCH-DEFINES 2>/dev/null`" ; then \
+               echo >&2 "    * new spatch flags"; \
+               echo "$$FLAGS" >GIT-SPATCH-DEFINES; \
+            fi
+
+include config.mak.uname
+-include config.mak.autogen
+-include config.mak
+
+ifdef DEVELOPER
+include config.mak.dev
+endif
+
+GENERATED_H += command-list.h
+GENERATED_H += config-list.h
+GENERATED_H += hook-list.h
+GENERATED_H += $(UNIT_TEST_DIR)/clar-decls.h
+GENERATED_H += $(UNIT_TEST_DIR)/clar.suite
+
+.PHONY: generated-hdrs
+generated-hdrs: $(GENERATED_H)
+
+## Exhaustive lists of our source files, either dynamically generated,
+## or hardcoded.
+SOURCES_CMD = ( \
+       git ls-files --deduplicate \
+               '*.[hcS]' \
+               '*.sh' \
+               ':!*[tp][0-9][0-9][0-9][0-9]*' \
+               ':!contrib' \
+               2>/dev/null || \
+       $(FIND) . \
+               \( -name .git -type d -prune \) \
+               -o \( -name '[tp][0-9][0-9][0-9][0-9]*' -prune \) \
+               -o \( -name contrib -type d -prune \) \
+               -o \( -name build -type d -prune \) \
+               -o \( -name .build -type d -prune \) \
+               -o \( -name 'trash*' -type d -prune \) \
+               -o \( -name '*.[hcS]' -type f -print \) \
+               -o \( -name '*.sh' -type f -print \) \
+               | sed -e 's|^\./||' \
+       )
+FOUND_SOURCE_FILES := $(filter-out $(GENERATED_H),$(shell $(SOURCES_CMD)))
+
+FOUND_C_SOURCES = $(filter %.c,$(FOUND_SOURCE_FILES))
+FOUND_H_SOURCES = $(filter %.h,$(FOUND_SOURCE_FILES))
+
+COCCI_SOURCES = $(filter-out $(THIRD_PARTY_SOURCES) reftable/%,$(FOUND_C_SOURCES))
+
+LIB_H = $(FOUND_H_SOURCES)
+
+LIB_OBJS += abspath.o
+LIB_OBJS += add-interactive.o
+LIB_OBJS += add-patch.o
+LIB_OBJS += advice.o
+LIB_OBJS += alias.o
+LIB_OBJS += alloc.o
+LIB_OBJS += apply.o
+LIB_OBJS += archive-tar.o
+LIB_OBJS += archive-zip.o
+LIB_OBJS += archive.o
+LIB_OBJS += attr.o
+LIB_OBJS += base85.o
+LIB_OBJS += bisect.o
+LIB_OBJS += blame.o
+LIB_OBJS += blob.o
+LIB_OBJS += bloom.o
+LIB_OBJS += branch.o
+LIB_OBJS += bundle-uri.o
+LIB_OBJS += bundle.o
+LIB_OBJS += cache-tree.o
+LIB_OBJS += cbtree.o
+LIB_OBJS += chdir-notify.o
+LIB_OBJS += checkout.o
+LIB_OBJS += chunk-format.o
+LIB_OBJS += color.o
+LIB_OBJS += column.o
+LIB_OBJS += combine-diff.o
+LIB_OBJS += commit-graph.o
+LIB_OBJS += commit-reach.o
+LIB_OBJS += commit.o
+LIB_OBJS += common-exit.o
+LIB_OBJS += common-init.o
+LIB_OBJS += compat/nonblock.o
+LIB_OBJS += compat/obstack.o
+LIB_OBJS += compat/open.o
+LIB_OBJS += compat/terminal.o
+LIB_OBJS += compiler-tricks/not-constant.o
+LIB_OBJS += config.o
+LIB_OBJS += connect.o
+LIB_OBJS += connected.o
+LIB_OBJS += convert.o
+LIB_OBJS += copy.o
+LIB_OBJS += credential.o
+LIB_OBJS += csum-file.o
+LIB_OBJS += ctype.o
+LIB_OBJS += date.o
+LIB_OBJS += decorate.o
+LIB_OBJS += delta-islands.o
+LIB_OBJS += diagnose.o
+LIB_OBJS += diff-delta.o
+LIB_OBJS += diff-merges.o
+LIB_OBJS += diff-lib.o
+LIB_OBJS += diff-no-index.o
+LIB_OBJS += diff.o
+LIB_OBJS += diffcore-break.o
+LIB_OBJS += diffcore-delta.o
+LIB_OBJS += diffcore-order.o
+LIB_OBJS += diffcore-pickaxe.o
+LIB_OBJS += diffcore-rename.o
+LIB_OBJS += diffcore-rotate.o
+LIB_OBJS += dir-iterator.o
+LIB_OBJS += dir.o
+LIB_OBJS += editor.o
+LIB_OBJS += entry.o
+LIB_OBJS += environment.o
+LIB_OBJS += ewah/bitmap.o
+LIB_OBJS += ewah/ewah_bitmap.o
+LIB_OBJS += ewah/ewah_io.o
+LIB_OBJS += ewah/ewah_rlw.o
+LIB_OBJS += exec-cmd.o
+LIB_OBJS += fetch-negotiator.o
+LIB_OBJS += fetch-pack.o
+LIB_OBJS += fmt-merge-msg.o
+LIB_OBJS += fsck.o
+LIB_OBJS += fsmonitor.o
+LIB_OBJS += fsmonitor-ipc.o
+LIB_OBJS += fsmonitor-settings.o
+LIB_OBJS += gettext.o
+LIB_OBJS += git-zlib.o
+LIB_OBJS += gpg-interface.o
+LIB_OBJS += graph.o
+LIB_OBJS += grep.o
+LIB_OBJS += hash-lookup.o
+LIB_OBJS += hash.o
+LIB_OBJS += hashmap.o
+LIB_OBJS += help.o
+LIB_OBJS += hex.o
+LIB_OBJS += hex-ll.o
+LIB_OBJS += hook.o
+LIB_OBJS += ident.o
+LIB_OBJS += json-writer.o
+LIB_OBJS += kwset.o
+LIB_OBJS += levenshtein.o
+LIB_OBJS += line-log.o
+LIB_OBJS += line-range.o
+LIB_OBJS += linear-assignment.o
+LIB_OBJS += list-objects-filter-options.o
+LIB_OBJS += list-objects-filter.o
+LIB_OBJS += list-objects.o
+LIB_OBJS += lockfile.o
+LIB_OBJS += log-tree.o
+LIB_OBJS += loose.o
+LIB_OBJS += ls-refs.o
+LIB_OBJS += mailinfo.o
+LIB_OBJS += mailmap.o
+LIB_OBJS += match-trees.o
+LIB_OBJS += mem-pool.o
+LIB_OBJS += merge-blobs.o
+LIB_OBJS += merge-ll.o
+LIB_OBJS += merge-ort.o
+LIB_OBJS += merge-ort-wrappers.o
+LIB_OBJS += merge.o
+LIB_OBJS += midx.o
+LIB_OBJS += midx-write.o
+LIB_OBJS += name-hash.o
+LIB_OBJS += negotiator/default.o
+LIB_OBJS += negotiator/noop.o
+LIB_OBJS += negotiator/skipping.o
+LIB_OBJS += notes-cache.o
+LIB_OBJS += notes-merge.o
+LIB_OBJS += notes-utils.o
+LIB_OBJS += notes.o
+LIB_OBJS += object-file-convert.o
+LIB_OBJS += object-file.o
+LIB_OBJS += object-name.o
+LIB_OBJS += object.o
+LIB_OBJS += odb.o
+LIB_OBJS += oid-array.o
+LIB_OBJS += oidmap.o
+LIB_OBJS += oidset.o
+LIB_OBJS += oidtree.o
+LIB_OBJS += pack-bitmap-write.o
+LIB_OBJS += pack-bitmap.o
+LIB_OBJS += pack-check.o
+LIB_OBJS += pack-mtimes.o
+LIB_OBJS += pack-objects.o
+LIB_OBJS += pack-refs.o
+LIB_OBJS += pack-revindex.o
+LIB_OBJS += pack-write.o
+LIB_OBJS += packfile.o
+LIB_OBJS += pager.o
+LIB_OBJS += parallel-checkout.o
+LIB_OBJS += parse.o
+LIB_OBJS += parse-options-cb.o
+LIB_OBJS += parse-options.o
+LIB_OBJS += patch-delta.o
+LIB_OBJS += patch-ids.o
+LIB_OBJS += path.o
+LIB_OBJS += path-walk.o
+LIB_OBJS += pathspec.o
+LIB_OBJS += pkt-line.o
+LIB_OBJS += preload-index.o
+LIB_OBJS += pretty.o
+LIB_OBJS += prio-queue.o
+LIB_OBJS += progress.o
+LIB_OBJS += promisor-remote.o
+LIB_OBJS += prompt.o
+LIB_OBJS += protocol.o
+LIB_OBJS += protocol-caps.o
+LIB_OBJS += prune-packed.o
+LIB_OBJS += pseudo-merge.o
+LIB_OBJS += quote.o
+LIB_OBJS += range-diff.o
+LIB_OBJS += reachable.o
+LIB_OBJS += read-cache.o
+LIB_OBJS += rebase-interactive.o
+LIB_OBJS += rebase.o
+LIB_OBJS += ref-filter.o
+LIB_OBJS += reflog-walk.o
+LIB_OBJS += reflog.o
+LIB_OBJS += refs.o
+LIB_OBJS += refs/debug.o
+LIB_OBJS += refs/files-backend.o
+LIB_OBJS += refs/reftable-backend.o
+LIB_OBJS += refs/iterator.o
+LIB_OBJS += refs/packed-backend.o
+LIB_OBJS += refs/ref-cache.o
+LIB_OBJS += refspec.o
+LIB_OBJS += reftable/basics.o
+LIB_OBJS += reftable/block.o
+LIB_OBJS += reftable/blocksource.o
+LIB_OBJS += reftable/error.o
+LIB_OBJS += reftable/fsck.o
+LIB_OBJS += reftable/iter.o
+LIB_OBJS += reftable/merged.o
+LIB_OBJS += reftable/pq.o
+LIB_OBJS += reftable/record.o
+LIB_OBJS += reftable/stack.o
+LIB_OBJS += reftable/system.o
+LIB_OBJS += reftable/table.o
+LIB_OBJS += reftable/tree.o
+LIB_OBJS += reftable/writer.o
+LIB_OBJS += remote.o
+LIB_OBJS += repack.o
+LIB_OBJS += repack-cruft.o
+LIB_OBJS += repack-filtered.o
+LIB_OBJS += repack-geometry.o
+LIB_OBJS += repack-midx.o
+LIB_OBJS += repack-promisor.o
+LIB_OBJS += replace-object.o
+LIB_OBJS += repo-settings.o
+LIB_OBJS += repository.o
+LIB_OBJS += rerere.o
+LIB_OBJS += reset.o
+LIB_OBJS += resolve-undo.o
+LIB_OBJS += revision.o
+LIB_OBJS += run-command.o
+LIB_OBJS += send-pack.o
+LIB_OBJS += sequencer.o
+LIB_OBJS += serve.o
+LIB_OBJS += server-info.o
+LIB_OBJS += setup.o
+LIB_OBJS += shallow.o
+LIB_OBJS += sideband.o
+LIB_OBJS += sigchain.o
+LIB_OBJS += sparse-index.o
+LIB_OBJS += split-index.o
+LIB_OBJS += stable-qsort.o
+LIB_OBJS += statinfo.o
+LIB_OBJS += strbuf.o
+LIB_OBJS += streaming.o
+LIB_OBJS += string-list.o
+LIB_OBJS += strmap.o
+LIB_OBJS += strvec.o
+LIB_OBJS += sub-process.o
+LIB_OBJS += submodule-config.o
+LIB_OBJS += submodule.o
+LIB_OBJS += symlinks.o
+LIB_OBJS += tag.o
+LIB_OBJS += tempfile.o
+LIB_OBJS += thread-utils.o
+LIB_OBJS += tmp-objdir.o
+LIB_OBJS += trace.o
+LIB_OBJS += trace2.o
+LIB_OBJS += trace2/tr2_cfg.o
+LIB_OBJS += trace2/tr2_cmd_name.o
+LIB_OBJS += trace2/tr2_ctr.o
+LIB_OBJS += trace2/tr2_dst.o
+LIB_OBJS += trace2/tr2_sid.o
+LIB_OBJS += trace2/tr2_sysenv.o
+LIB_OBJS += trace2/tr2_tbuf.o
+LIB_OBJS += trace2/tr2_tgt_event.o
+LIB_OBJS += trace2/tr2_tgt_normal.o
+LIB_OBJS += trace2/tr2_tgt_perf.o
+LIB_OBJS += trace2/tr2_tls.o
+LIB_OBJS += trace2/tr2_tmr.o
+LIB_OBJS += trailer.o
+LIB_OBJS += transport-helper.o
+LIB_OBJS += transport.o
+LIB_OBJS += tree-diff.o
+LIB_OBJS += tree-walk.o
+LIB_OBJS += tree.o
+LIB_OBJS += unpack-trees.o
+LIB_OBJS += upload-pack.o
+LIB_OBJS += url.o
+LIB_OBJS += urlmatch.o
+LIB_OBJS += usage.o
+LIB_OBJS += userdiff.o
+LIB_OBJS += utf8.o
+ifndef WITH_RUST
+LIB_OBJS += varint.o
+endif
+LIB_OBJS += version.o
+LIB_OBJS += versioncmp.o
+LIB_OBJS += walker.o
+LIB_OBJS += wildmatch.o
+LIB_OBJS += worktree.o
+LIB_OBJS += wrapper.o
+LIB_OBJS += write-or-die.o
+LIB_OBJS += ws.o
+LIB_OBJS += wt-status.o
+LIB_OBJS += xdiff-interface.o
+LIB_OBJS += xdiff/xdiffi.o
+LIB_OBJS += xdiff/xemit.o
+LIB_OBJS += xdiff/xhistogram.o
+LIB_OBJS += xdiff/xmerge.o
+LIB_OBJS += xdiff/xpatience.o
+LIB_OBJS += xdiff/xprepare.o
+LIB_OBJS += xdiff/xutils.o
+
+BUILTIN_OBJS += builtin/add.o
+BUILTIN_OBJS += builtin/am.o
+BUILTIN_OBJS += builtin/annotate.o
+BUILTIN_OBJS += builtin/apply.o
+BUILTIN_OBJS += builtin/archive.o
+BUILTIN_OBJS += builtin/backfill.o
+BUILTIN_OBJS += builtin/bisect.o
+BUILTIN_OBJS += builtin/blame.o
+BUILTIN_OBJS += builtin/branch.o
+BUILTIN_OBJS += builtin/bugreport.o
+BUILTIN_OBJS += builtin/bundle.o
+BUILTIN_OBJS += builtin/cat-file.o
+BUILTIN_OBJS += builtin/check-attr.o
+BUILTIN_OBJS += builtin/check-ignore.o
+BUILTIN_OBJS += builtin/check-mailmap.o
+BUILTIN_OBJS += builtin/check-ref-format.o
+BUILTIN_OBJS += builtin/checkout--worker.o
+BUILTIN_OBJS += builtin/checkout-index.o
+BUILTIN_OBJS += builtin/checkout.o
+BUILTIN_OBJS += builtin/clean.o
+BUILTIN_OBJS += builtin/clone.o
+BUILTIN_OBJS += builtin/column.o
+BUILTIN_OBJS += builtin/commit-graph.o
+BUILTIN_OBJS += builtin/commit-tree.o
+BUILTIN_OBJS += builtin/commit.o
+BUILTIN_OBJS += builtin/config.o
+BUILTIN_OBJS += builtin/count-objects.o
+BUILTIN_OBJS += builtin/credential-cache--daemon.o
+BUILTIN_OBJS += builtin/credential-cache.o
+BUILTIN_OBJS += builtin/credential-store.o
+BUILTIN_OBJS += builtin/credential.o
+BUILTIN_OBJS += builtin/describe.o
+BUILTIN_OBJS += builtin/diagnose.o
+BUILTIN_OBJS += builtin/diff-files.o
+BUILTIN_OBJS += builtin/diff-index.o
+BUILTIN_OBJS += builtin/diff-pairs.o
+BUILTIN_OBJS += builtin/diff-tree.o
+BUILTIN_OBJS += builtin/diff.o
+BUILTIN_OBJS += builtin/difftool.o
+BUILTIN_OBJS += builtin/fast-export.o
+BUILTIN_OBJS += builtin/fast-import.o
+BUILTIN_OBJS += builtin/fetch-pack.o
+BUILTIN_OBJS += builtin/fetch.o
+BUILTIN_OBJS += builtin/fmt-merge-msg.o
+BUILTIN_OBJS += builtin/for-each-ref.o
+BUILTIN_OBJS += builtin/for-each-repo.o
+BUILTIN_OBJS += builtin/fsck.o
+BUILTIN_OBJS += builtin/fsmonitor--daemon.o
+BUILTIN_OBJS += builtin/gc.o
+BUILTIN_OBJS += builtin/get-tar-commit-id.o
+BUILTIN_OBJS += builtin/grep.o
+BUILTIN_OBJS += builtin/hash-object.o
+BUILTIN_OBJS += builtin/help.o
+BUILTIN_OBJS += builtin/hook.o
+BUILTIN_OBJS += builtin/index-pack.o
+BUILTIN_OBJS += builtin/init-db.o
+BUILTIN_OBJS += builtin/interpret-trailers.o
+BUILTIN_OBJS += builtin/last-modified.o
+BUILTIN_OBJS += builtin/log.o
+BUILTIN_OBJS += builtin/ls-files.o
+BUILTIN_OBJS += builtin/ls-remote.o
+BUILTIN_OBJS += builtin/ls-tree.o
+BUILTIN_OBJS += builtin/mailinfo.o
+BUILTIN_OBJS += builtin/mailsplit.o
+BUILTIN_OBJS += builtin/merge-base.o
+BUILTIN_OBJS += builtin/merge-file.o
+BUILTIN_OBJS += builtin/merge-index.o
+BUILTIN_OBJS += builtin/merge-ours.o
+BUILTIN_OBJS += builtin/merge-recursive.o
+BUILTIN_OBJS += builtin/merge-tree.o
+BUILTIN_OBJS += builtin/merge.o
+BUILTIN_OBJS += builtin/mktag.o
+BUILTIN_OBJS += builtin/mktree.o
+BUILTIN_OBJS += builtin/multi-pack-index.o
+BUILTIN_OBJS += builtin/mv.o
+BUILTIN_OBJS += builtin/name-rev.o
+BUILTIN_OBJS += builtin/notes.o
+BUILTIN_OBJS += builtin/pack-objects.o
+ifndef WITH_BREAKING_CHANGES
+BUILTIN_OBJS += builtin/pack-redundant.o
+endif
+BUILTIN_OBJS += builtin/pack-refs.o
+BUILTIN_OBJS += builtin/patch-id.o
+BUILTIN_OBJS += builtin/prune-packed.o
+BUILTIN_OBJS += builtin/prune.o
+BUILTIN_OBJS += builtin/pull.o
+BUILTIN_OBJS += builtin/push.o
+BUILTIN_OBJS += builtin/range-diff.o
+BUILTIN_OBJS += builtin/read-tree.o
+BUILTIN_OBJS += builtin/rebase.o
+BUILTIN_OBJS += builtin/receive-pack.o
+BUILTIN_OBJS += builtin/reflog.o
+BUILTIN_OBJS += builtin/refs.o
+BUILTIN_OBJS += builtin/remote-ext.o
+BUILTIN_OBJS += builtin/remote-fd.o
+BUILTIN_OBJS += builtin/remote.o
+BUILTIN_OBJS += builtin/repack.o
+BUILTIN_OBJS += builtin/replace.o
+BUILTIN_OBJS += builtin/replay.o
+BUILTIN_OBJS += builtin/repo.o
+BUILTIN_OBJS += builtin/rerere.o
+BUILTIN_OBJS += builtin/reset.o
+BUILTIN_OBJS += builtin/rev-list.o
+BUILTIN_OBJS += builtin/rev-parse.o
+BUILTIN_OBJS += builtin/revert.o
+BUILTIN_OBJS += builtin/rm.o
+BUILTIN_OBJS += builtin/send-pack.o
+BUILTIN_OBJS += builtin/shortlog.o
+BUILTIN_OBJS += builtin/show-branch.o
+BUILTIN_OBJS += builtin/show-index.o
+BUILTIN_OBJS += builtin/show-ref.o
+BUILTIN_OBJS += builtin/sparse-checkout.o
+BUILTIN_OBJS += builtin/stash.o
+BUILTIN_OBJS += builtin/stripspace.o
+BUILTIN_OBJS += builtin/submodule--helper.o
+BUILTIN_OBJS += builtin/symbolic-ref.o
+BUILTIN_OBJS += builtin/tag.o
+BUILTIN_OBJS += builtin/unpack-file.o
+BUILTIN_OBJS += builtin/unpack-objects.o
+BUILTIN_OBJS += builtin/update-index.o
+BUILTIN_OBJS += builtin/update-ref.o
+BUILTIN_OBJS += builtin/update-server-info.o
+BUILTIN_OBJS += builtin/upload-archive.o
+BUILTIN_OBJS += builtin/upload-pack.o
+BUILTIN_OBJS += builtin/var.o
+BUILTIN_OBJS += builtin/verify-commit.o
+BUILTIN_OBJS += builtin/verify-pack.o
+BUILTIN_OBJS += builtin/verify-tag.o
+BUILTIN_OBJS += builtin/worktree.o
+BUILTIN_OBJS += builtin/write-tree.o
+
+# THIRD_PARTY_SOURCES is a list of patterns compatible with the
+# $(filter) and $(filter-out) family of functions. They specify source
+# files which are taken from some third-party source where we want to be
+# less strict about issues such as coding style so we don't diverge from
+# upstream unnecessarily (making merging in future changes easier).
+THIRD_PARTY_SOURCES += compat/inet_ntop.c
+THIRD_PARTY_SOURCES += compat/inet_pton.c
+THIRD_PARTY_SOURCES += compat/nedmalloc/%
+THIRD_PARTY_SOURCES += compat/obstack.%
+THIRD_PARTY_SOURCES += compat/poll/%
+THIRD_PARTY_SOURCES += compat/regex/%
+THIRD_PARTY_SOURCES += sha1collisiondetection/%
+THIRD_PARTY_SOURCES += sha1dc/%
+THIRD_PARTY_SOURCES += $(UNIT_TEST_DIR)/clar/%
+THIRD_PARTY_SOURCES += $(UNIT_TEST_DIR)/clar/clar/%
+
+CLAR_TEST_SUITES += u-ctype
+CLAR_TEST_SUITES += u-dir
+CLAR_TEST_SUITES += u-example-decorate
+CLAR_TEST_SUITES += u-hash
+CLAR_TEST_SUITES += u-hashmap
+CLAR_TEST_SUITES += u-mem-pool
+CLAR_TEST_SUITES += u-oid-array
+CLAR_TEST_SUITES += u-oidmap
+CLAR_TEST_SUITES += u-oidtree
+CLAR_TEST_SUITES += u-prio-queue
+CLAR_TEST_SUITES += u-reftable-basics
+CLAR_TEST_SUITES += u-reftable-block
+CLAR_TEST_SUITES += u-reftable-merged
+CLAR_TEST_SUITES += u-reftable-pq
+CLAR_TEST_SUITES += u-reftable-readwrite
+CLAR_TEST_SUITES += u-reftable-stack
+CLAR_TEST_SUITES += u-reftable-table
+CLAR_TEST_SUITES += u-reftable-tree
+CLAR_TEST_SUITES += u-strbuf
+CLAR_TEST_SUITES += u-strcmp-offset
+CLAR_TEST_SUITES += u-string-list
+CLAR_TEST_SUITES += u-strvec
+CLAR_TEST_SUITES += u-trailer
+CLAR_TEST_SUITES += u-urlmatch-normalization
+CLAR_TEST_SUITES += u-utf8-width
+CLAR_TEST_PROG = $(UNIT_TEST_BIN)/unit-tests$(X)
+CLAR_TEST_OBJS = $(patsubst %,$(UNIT_TEST_DIR)/%.o,$(CLAR_TEST_SUITES))
+CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/clar/clar.o
+CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/lib-oid.o
+CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/lib-reftable.o
+CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/unit-test.o
+
+UNIT_TEST_OBJS += $(UNIT_TEST_DIR)/test-lib.o
+
+RUST_SOURCES += src/lib.rs
+RUST_SOURCES += src/varint.rs
+
+GIT-VERSION-FILE: FORCE
+       @OLD=$$(cat $@ 2>/dev/null || :) && \
+       $(call version_gen,"$(shell pwd)",GIT-VERSION-FILE.in,$@) && \
+       NEW=$$(cat $@ 2>/dev/null || :) && \
+       if test "$$OLD" != "$$NEW"; then echo "$$NEW" >&2; fi
+
+# We need to set GIT_VERSION_OVERRIDE before including the version file as
+# otherwise any user-provided value for GIT_VERSION would have been overridden
+# already.
+GIT_VERSION_OVERRIDE := $(GIT_VERSION)
+-include GIT-VERSION-FILE
+
+# what 'all' will build and 'install' will install in gitexecdir,
+# excluding programs for built-in commands
+ALL_PROGRAMS = $(PROGRAMS) $(SCRIPTS)
+ALL_COMMANDS_TO_INSTALL = $(ALL_PROGRAMS)
+ifeq (,$(SKIP_DASHED_BUILT_INS))
+ALL_COMMANDS_TO_INSTALL += $(BUILT_INS)
+else
+# git-upload-pack, git-receive-pack and git-upload-archive are special: they
+# are _expected_ to be present in the `bin/` directory in their dashed form.
+ALL_COMMANDS_TO_INSTALL += git-receive-pack$(X)
+ALL_COMMANDS_TO_INSTALL += git-upload-archive$(X)
+ALL_COMMANDS_TO_INSTALL += git-upload-pack$(X)
+endif
+
+ALL_CFLAGS = $(DEVELOPER_CFLAGS) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_APPEND)
+ALL_LDFLAGS = $(LDFLAGS) $(LDFLAGS_APPEND)
+
+ifdef WITH_RUST
+BASIC_CFLAGS += -DWITH_RUST
+GITLIBS += $(RUST_LIB)
+ifeq ($(uname_S),Windows)
+EXTLIBS += -luserenv
+endif
+endif
+
+ifdef SANITIZE
+SANITIZERS := $(foreach flag,$(subst $(comma),$(space),$(SANITIZE)),$(flag))
+BASIC_CFLAGS += -fsanitize=$(SANITIZE) -fno-sanitize-recover=$(SANITIZE)
+BASIC_CFLAGS += -fno-omit-frame-pointer
+ifneq ($(filter undefined,$(SANITIZERS)),)
+BASIC_CFLAGS += -DSHA1DC_FORCE_ALIGNED_ACCESS
+endif
+ifneq ($(filter leak,$(SANITIZERS)),)
+BASIC_CFLAGS += -O0
+SANITIZE_LEAK = YesCompiledWithIt
+endif
+ifneq ($(filter address,$(SANITIZERS)),)
+NO_REGEX = NeededForASAN
+SANITIZE_ADDRESS = YesCompiledWithIt
+endif
+endif
+
+ifndef sysconfdir
+ifeq ($(prefix),/usr)
+sysconfdir = /etc
+else
+sysconfdir = etc
+endif
+endif
+
+ifndef COMPUTE_HEADER_DEPENDENCIES
+COMPUTE_HEADER_DEPENDENCIES = auto
+endif
+
+ifeq ($(COMPUTE_HEADER_DEPENDENCIES),auto)
+dep_check = $(shell $(CC) $(ALL_CFLAGS) \
+       -Wno-pedantic \
+       -c -MF /dev/null -MQ /dev/null -MMD -MP \
+       -x c /dev/null -o /dev/null 2>&1; \
+       echo $$?)
+ifeq ($(dep_check),0)
+override COMPUTE_HEADER_DEPENDENCIES = yes
+else
+override COMPUTE_HEADER_DEPENDENCIES = no
+endif
+endif
+
+ifeq ($(COMPUTE_HEADER_DEPENDENCIES),yes)
+USE_COMPUTED_HEADER_DEPENDENCIES = YesPlease
+else
+ifneq ($(COMPUTE_HEADER_DEPENDENCIES),no)
+$(error please set COMPUTE_HEADER_DEPENDENCIES to yes, no, or auto \
+(not "$(COMPUTE_HEADER_DEPENDENCIES)"))
+endif
+endif
+
+ifndef GENERATE_COMPILATION_DATABASE
+GENERATE_COMPILATION_DATABASE = no
+endif
+
+ifeq ($(GENERATE_COMPILATION_DATABASE),yes)
+compdb_check = $(shell $(CC) $(ALL_CFLAGS) \
+       -Wno-pedantic \
+       -c -MJ /dev/null \
+       -x c /dev/null -o /dev/null 2>&1; \
+       echo $$?)
+ifneq ($(compdb_check),0)
+override GENERATE_COMPILATION_DATABASE = no
+$(warning GENERATE_COMPILATION_DATABASE is set to "yes", but your compiler does not \
+support generating compilation database entries)
+endif
+else
+ifneq ($(GENERATE_COMPILATION_DATABASE),no)
+$(error please set GENERATE_COMPILATION_DATABASE to "yes" or "no" \
+(not "$(GENERATE_COMPILATION_DATABASE)"))
+endif
+endif
+
+ifdef SANE_TOOL_PATH
+SANE_TOOL_PATH_SQ = $(subst ','\'',$(SANE_TOOL_PATH))
+BROKEN_PATH_FIX = s|^\# @BROKEN_PATH_FIX@$$|git_broken_path_fix "$(SANE_TOOL_PATH_SQ)"|
+PATH := $(SANE_TOOL_PATH):${PATH}
+else
+BROKEN_PATH_FIX = /^\# @BROKEN_PATH_FIX@$$/d
+endif
+
+ifeq (,$(HOST_CPU))
+       BASIC_CFLAGS += -DGIT_HOST_CPU="\"$(firstword $(subst -, ,$(uname_M)))\""
+else
+       BASIC_CFLAGS += -DGIT_HOST_CPU="\"$(HOST_CPU)\""
+endif
+
+ifneq (,$(INLINE))
+       BASIC_CFLAGS += -Dinline=$(INLINE)
+endif
+
+ifneq (,$(SOCKLEN_T))
+       BASIC_CFLAGS += -Dsocklen_t=$(SOCKLEN_T)
+endif
+
+ifeq ($(uname_S),Darwin)
+        ifndef NO_FINK
+                ifeq ($(shell test -d /sw/lib && echo y),y)
+                       BASIC_CFLAGS += -I/sw/include
+                       BASIC_LDFLAGS += -L/sw/lib
+                endif
+        endif
+        ifndef NO_DARWIN_PORTS
+                ifeq ($(shell test -d /opt/local/lib && echo y),y)
+                       BASIC_CFLAGS += -I/opt/local/include
+                       BASIC_LDFLAGS += -L/opt/local/lib
+                endif
+        endif
+        ifndef NO_APPLE_COMMON_CRYPTO
+               NO_OPENSSL = YesPlease
+               APPLE_COMMON_CRYPTO = YesPlease
+               COMPAT_CFLAGS += -DAPPLE_COMMON_CRYPTO
+        endif
+       PTHREAD_LIBS =
+endif
+
+ifdef NO_LIBGEN_H
+       COMPAT_CFLAGS += -DNO_LIBGEN_H
+       COMPAT_OBJS += compat/basename.o
+endif
+
+ifdef USE_LIBPCRE1
+$(error The USE_LIBPCRE1 build option has been removed, use version 2 with USE_LIBPCRE)
+endif
+
+USE_LIBPCRE2 ?= $(USE_LIBPCRE)
+
+ifneq (,$(USE_LIBPCRE2))
+       BASIC_CFLAGS += -DUSE_LIBPCRE2
+       EXTLIBS += -lpcre2-8
+endif
+
+ifdef LIBPCREDIR
+       BASIC_CFLAGS += -I$(LIBPCREDIR)/include
+       EXTLIBS += $(call libpath_template,$(LIBPCREDIR)/$(lib))
+endif
+
+ifdef HAVE_ALLOCA_H
+       BASIC_CFLAGS += -DHAVE_ALLOCA_H
+endif
+
+IMAP_SEND_BUILDDEPS =
+IMAP_SEND_LDFLAGS =
+
+ifdef NO_CURL
+       BASIC_CFLAGS += -DNO_CURL
+       REMOTE_CURL_PRIMARY =
+       REMOTE_CURL_ALIASES =
+       REMOTE_CURL_NAMES =
+       EXCLUDED_PROGRAMS += git-http-fetch git-http-push
+else
+        ifdef CURLDIR
+               # Try "-Wl,-rpath=$(CURLDIR)/$(lib)" in such a case.
+               CURL_CFLAGS = -I$(CURLDIR)/include
+               CURL_LIBCURL = $(call libpath_template,$(CURLDIR)/$(lib))
+        else
+               CURL_CFLAGS =
+               CURL_LIBCURL =
+        endif
+
+        ifndef CURL_LDFLAGS
+               CURL_LDFLAGS = $(eval CURL_LDFLAGS := $$(shell $$(CURL_CONFIG) --libs))$(CURL_LDFLAGS)
+        endif
+       CURL_LIBCURL += $(CURL_LDFLAGS)
+
+        ifndef CURL_CFLAGS
+               CURL_CFLAGS = $(eval CURL_CFLAGS := $$(shell $$(CURL_CONFIG) --cflags))$(CURL_CFLAGS)
+        endif
+       BASIC_CFLAGS += $(CURL_CFLAGS)
+
+       REMOTE_CURL_PRIMARY = git-remote-http$X
+       REMOTE_CURL_ALIASES = git-remote-https$X git-remote-ftp$X git-remote-ftps$X
+       REMOTE_CURL_NAMES = $(REMOTE_CURL_PRIMARY) $(REMOTE_CURL_ALIASES)
+       PROGRAM_OBJS += http-fetch.o
+       PROGRAMS += $(REMOTE_CURL_NAMES)
+        ifndef NO_EXPAT
+               PROGRAM_OBJS += http-push.o
+        endif
+       curl_check := $(shell (echo 072200; $(CURL_CONFIG) --vernum | sed -e '/^70[BC]/s/^/0/') 2>/dev/null | sort -r | sed -ne 2p)
+        ifeq "$(curl_check)" "072200"
+               USE_CURL_FOR_IMAP_SEND = YesPlease
+        endif
+        ifdef USE_CURL_FOR_IMAP_SEND
+               BASIC_CFLAGS += -DUSE_CURL_FOR_IMAP_SEND
+               IMAP_SEND_BUILDDEPS = http.o
+               IMAP_SEND_LDFLAGS += $(CURL_LIBCURL)
+        endif
+        ifndef NO_EXPAT
+                ifdef EXPATDIR
+                       BASIC_CFLAGS += -I$(EXPATDIR)/include
+                       EXPAT_LIBEXPAT = $(call libpath_template,$(EXPATDIR)/$(lib)) -lexpat
+                else
+                       EXPAT_LIBEXPAT = -lexpat
+                endif
+                ifdef EXPAT_NEEDS_XMLPARSE_H
+                       BASIC_CFLAGS += -DEXPAT_NEEDS_XMLPARSE_H
+                endif
+        endif
+endif
+IMAP_SEND_LDFLAGS += $(OPENSSL_LINK) $(OPENSSL_LIBSSL) $(LIB_4_CRYPTO)
+
+ifdef ZLIB_NG
+       BASIC_CFLAGS += -DHAVE_ZLIB_NG
+        ifdef ZLIB_NG_PATH
+               BASIC_CFLAGS += -I$(ZLIB_NG_PATH)/include
+               EXTLIBS += $(call libpath_template,$(ZLIB_NG_PATH)/$(lib))
+        endif
+       EXTLIBS += -lz-ng
+else
+        ifdef ZLIB_PATH
+               BASIC_CFLAGS += -I$(ZLIB_PATH)/include
+               EXTLIBS += $(call libpath_template,$(ZLIB_PATH)/$(lib))
+        endif
+       EXTLIBS += -lz
+endif
+
+ifndef NO_OPENSSL
+       OPENSSL_LIBSSL = -lssl
+        ifdef OPENSSLDIR
+               BASIC_CFLAGS += -I$(OPENSSLDIR)/include
+               OPENSSL_LINK = $(call libpath_template,$(OPENSSLDIR)/$(lib))
+        else
+               OPENSSL_LINK =
+        endif
+        ifdef NEEDS_CRYPTO_WITH_SSL
+               OPENSSL_LIBSSL += -lcrypto
+        endif
+else
+       BASIC_CFLAGS += -DNO_OPENSSL
+       OPENSSL_LIBSSL =
+endif
+ifdef NO_OPENSSL
+       LIB_4_CRYPTO =
+else
+ifdef NEEDS_SSL_WITH_CRYPTO
+       LIB_4_CRYPTO = $(OPENSSL_LINK) -lcrypto -lssl
+else
+       LIB_4_CRYPTO = $(OPENSSL_LINK) -lcrypto
+endif
+ifdef APPLE_COMMON_CRYPTO
+       LIB_4_CRYPTO += -framework Security -framework CoreFoundation
+endif
+endif
+ifndef NO_ICONV
+        ifdef NEEDS_LIBICONV
+                ifdef ICONVDIR
+                       BASIC_CFLAGS += -I$(ICONVDIR)/include
+                       ICONV_LINK = $(call libpath_template,$(ICONVDIR)/$(lib))
+                else
+                       ICONV_LINK =
+                endif
+                ifdef NEEDS_LIBINTL_BEFORE_LIBICONV
+                       ICONV_LINK += -lintl
+                endif
+               EXTLIBS += $(ICONV_LINK) -liconv
+        endif
+endif
+ifdef ICONV_OMITS_BOM
+       BASIC_CFLAGS += -DICONV_OMITS_BOM
+endif
+ifdef NEEDS_LIBGEN
+       EXTLIBS += -lgen
+endif
+ifndef NO_GETTEXT
+ifndef LIBC_CONTAINS_LIBINTL
+       EXTLIBS += -lintl
+endif
+endif
+ifdef NEEDS_SOCKET
+       EXTLIBS += -lsocket
+endif
+ifdef NEEDS_NSL
+       EXTLIBS += -lnsl
+endif
+ifdef NEEDS_RESOLV
+       EXTLIBS += -lresolv
+endif
+ifdef NO_D_TYPE_IN_DIRENT
+       BASIC_CFLAGS += -DNO_D_TYPE_IN_DIRENT
+endif
+ifdef NO_GECOS_IN_PWENT
+       BASIC_CFLAGS += -DNO_GECOS_IN_PWENT
+endif
+ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
+       BASIC_CFLAGS += -DNO_ST_BLOCKS_IN_STRUCT_STAT
+endif
+ifdef USE_NSEC
+       BASIC_CFLAGS += -DUSE_NSEC
+endif
+ifdef USE_ST_TIMESPEC
+       BASIC_CFLAGS += -DUSE_ST_TIMESPEC
+endif
+ifdef NO_NORETURN
+       BASIC_CFLAGS += -DNO_NORETURN
+endif
+ifdef NO_NSEC
+       BASIC_CFLAGS += -DNO_NSEC
+endif
+ifdef SNPRINTF_RETURNS_BOGUS
+       COMPAT_CFLAGS += -DSNPRINTF_RETURNS_BOGUS
+       COMPAT_OBJS += compat/snprintf.o
+endif
+ifdef FREAD_READS_DIRECTORIES
+       COMPAT_CFLAGS += -DFREAD_READS_DIRECTORIES
+       COMPAT_OBJS += compat/fopen.o
+endif
+ifdef OPEN_RETURNS_EINTR
+       COMPAT_CFLAGS += -DOPEN_RETURNS_EINTR
+endif
+ifdef NO_SYMLINK_HEAD
+       BASIC_CFLAGS += -DNO_SYMLINK_HEAD
+endif
+ifdef NO_GETTEXT
+       BASIC_CFLAGS += -DNO_GETTEXT
+       USE_GETTEXT_SCHEME ?= fallthrough
+endif
+ifdef NO_POLL
+       NO_POLL_H = YesPlease
+       NO_SYS_POLL_H = YesPlease
+       COMPAT_CFLAGS += -DNO_POLL -Icompat/poll
+       COMPAT_OBJS += compat/poll/poll.o
+endif
+ifdef NO_STRCASESTR
+       COMPAT_CFLAGS += -DNO_STRCASESTR
+       COMPAT_OBJS += compat/strcasestr.o
+endif
+ifdef NO_STRLCPY
+       COMPAT_CFLAGS += -DNO_STRLCPY
+       COMPAT_OBJS += compat/strlcpy.o
+endif
+ifdef NO_STRTOUMAX
+       COMPAT_CFLAGS += -DNO_STRTOUMAX
+       COMPAT_OBJS += compat/strtoumax.o compat/strtoimax.o
+endif
+ifdef NO_STRTOULL
+       COMPAT_CFLAGS += -DNO_STRTOULL
+endif
+ifdef NO_SETENV
+       COMPAT_CFLAGS += -DNO_SETENV
+       COMPAT_OBJS += compat/setenv.o
+endif
+ifdef NO_MKDTEMP
+       COMPAT_CFLAGS += -DNO_MKDTEMP
+       COMPAT_OBJS += compat/mkdtemp.o
+endif
+ifdef MKDIR_WO_TRAILING_SLASH
+       COMPAT_CFLAGS += -DMKDIR_WO_TRAILING_SLASH
+       COMPAT_OBJS += compat/mkdir.o
+endif
+ifdef NO_UNSETENV
+       COMPAT_CFLAGS += -DNO_UNSETENV
+       COMPAT_OBJS += compat/unsetenv.o
+endif
+ifdef NO_SYS_SELECT_H
+       BASIC_CFLAGS += -DNO_SYS_SELECT_H
+endif
+ifdef NO_POLL_H
+       BASIC_CFLAGS += -DNO_POLL_H
+endif
+ifdef NO_SYS_POLL_H
+       BASIC_CFLAGS += -DNO_SYS_POLL_H
+endif
+ifdef NEEDS_SYS_PARAM_H
+       BASIC_CFLAGS += -DNEEDS_SYS_PARAM_H
+endif
+ifdef NO_INTTYPES_H
+       BASIC_CFLAGS += -DNO_INTTYPES_H
+endif
+ifdef NO_INITGROUPS
+       BASIC_CFLAGS += -DNO_INITGROUPS
+endif
+ifdef NO_MMAP
+       COMPAT_CFLAGS += -DNO_MMAP
+       COMPAT_OBJS += compat/mmap.o
+else
+        ifdef USE_WIN32_MMAP
+               COMPAT_CFLAGS += -DUSE_WIN32_MMAP
+               COMPAT_OBJS += compat/win32mmap.o
+        endif
+endif
+ifdef MMAP_PREVENTS_DELETE
+       BASIC_CFLAGS += -DMMAP_PREVENTS_DELETE
+endif
+ifdef OBJECT_CREATION_USES_RENAMES
+       COMPAT_CFLAGS += -DOBJECT_CREATION_MODE=1
+endif
+ifdef NO_STRUCT_ITIMERVAL
+       COMPAT_CFLAGS += -DNO_STRUCT_ITIMERVAL
+       NO_SETITIMER = YesPlease
+endif
+ifdef NO_SETITIMER
+       COMPAT_CFLAGS += -DNO_SETITIMER
+endif
+ifdef NO_PREAD
+       COMPAT_CFLAGS += -DNO_PREAD
+       COMPAT_OBJS += compat/pread.o
+endif
+ifdef NO_FAST_WORKING_DIRECTORY
+       BASIC_CFLAGS += -DNO_FAST_WORKING_DIRECTORY
+endif
+ifdef NO_TRUSTABLE_FILEMODE
+       BASIC_CFLAGS += -DNO_TRUSTABLE_FILEMODE
+endif
+ifdef NEEDS_MODE_TRANSLATION
+       COMPAT_CFLAGS += -DNEEDS_MODE_TRANSLATION
+       COMPAT_OBJS += compat/stat.o
+endif
+ifdef NO_IPV6
+       BASIC_CFLAGS += -DNO_IPV6
+endif
+ifdef NO_INTPTR_T
+       COMPAT_CFLAGS += -DNO_INTPTR_T
+endif
+ifdef NO_SOCKADDR_STORAGE
+ifdef NO_IPV6
+       BASIC_CFLAGS += -Dsockaddr_storage=sockaddr_in
+else
+       BASIC_CFLAGS += -Dsockaddr_storage=sockaddr_in6
+endif
+endif
+ifdef NO_INET_NTOP
+       LIB_OBJS += compat/inet_ntop.o
+       BASIC_CFLAGS += -DNO_INET_NTOP
+endif
+ifdef NO_INET_PTON
+       LIB_OBJS += compat/inet_pton.o
+       BASIC_CFLAGS += -DNO_INET_PTON
+endif
+ifdef NO_UNIX_SOCKETS
+       BASIC_CFLAGS += -DNO_UNIX_SOCKETS
+else
+       LIB_OBJS += unix-socket.o
+       LIB_OBJS += unix-stream-server.o
+endif
+
+# Simple IPC requires threads and platform-specific IPC support.
+# Only platforms that have both should include these source files
+# in the build.
+#
+# On Windows-based systems, Simple IPC requires threads and Windows
+# Named Pipes.  These are always available, so Simple IPC support
+# is optional.
+#
+# On Unix-based systems, Simple IPC requires pthreads and Unix
+# domain sockets.  So support is only enabled when both are present.
+#
+ifdef USE_WIN32_IPC
+       BASIC_CFLAGS += -DSUPPORTS_SIMPLE_IPC
+       LIB_OBJS += compat/simple-ipc/ipc-shared.o
+       LIB_OBJS += compat/simple-ipc/ipc-win32.o
+else
+ifndef NO_PTHREADS
+ifndef NO_UNIX_SOCKETS
+       BASIC_CFLAGS += -DSUPPORTS_SIMPLE_IPC
+       LIB_OBJS += compat/simple-ipc/ipc-shared.o
+       LIB_OBJS += compat/simple-ipc/ipc-unix-socket.o
+endif
+endif
+endif
+
+ifdef NO_ICONV
+       BASIC_CFLAGS += -DNO_ICONV
+endif
+
+ifdef OLD_ICONV
+       BASIC_CFLAGS += -DOLD_ICONV
+endif
+
+ifdef NO_DEFLATE_BOUND
+       BASIC_CFLAGS += -DNO_DEFLATE_BOUND
+endif
+
+ifdef NO_POSIX_GOODIES
+       BASIC_CFLAGS += -DNO_POSIX_GOODIES
+endif
+
+ifdef APPLE_COMMON_CRYPTO_SHA1
+       # Apple CommonCrypto requires chunking
+       SHA1_MAX_BLOCK_SIZE = 1024L*1024L*1024L
+endif
+
+ifdef PPC_SHA1
+$(error the PPC_SHA1 flag has been removed along with the PowerPC-specific SHA-1 implementation.)
+endif
+
+ifdef OPENSSL_SHA1
+       EXTLIBS += $(LIB_4_CRYPTO)
+       BASIC_CFLAGS += -DSHA1_OPENSSL
+else
+ifdef BLK_SHA1
+       LIB_OBJS += block-sha1/sha1.o
+       BASIC_CFLAGS += -DSHA1_BLK
+else
+ifdef APPLE_COMMON_CRYPTO_SHA1
+       COMPAT_CFLAGS += -DCOMMON_DIGEST_FOR_OPENSSL
+       BASIC_CFLAGS += -DSHA1_APPLE
+else
+       BASIC_CFLAGS += -DSHA1_DC
+       LIB_OBJS += sha1dc_git.o
+ifdef DC_SHA1_EXTERNAL
+        ifdef DC_SHA1_SUBMODULE
+                ifneq ($(DC_SHA1_SUBMODULE),auto)
+$(error Only set DC_SHA1_EXTERNAL or DC_SHA1_SUBMODULE, not both)
+                endif
+        endif
+       BASIC_CFLAGS += -DDC_SHA1_EXTERNAL
+       EXTLIBS += -lsha1detectcoll
+else
+ifdef DC_SHA1_SUBMODULE
+       LIB_OBJS += sha1collisiondetection/lib/sha1.o
+       LIB_OBJS += sha1collisiondetection/lib/ubc_check.o
+       BASIC_CFLAGS += -DDC_SHA1_SUBMODULE
+else
+       LIB_OBJS += sha1dc/sha1.o
+       LIB_OBJS += sha1dc/ubc_check.o
+endif
+       BASIC_CFLAGS += \
+               -DSHA1DC_NO_STANDARD_INCLUDES \
+               -DSHA1DC_INIT_SAFE_HASH_DEFAULT=0 \
+               -DSHA1DC_CUSTOM_INCLUDE_SHA1_C="\"git-compat-util.h\"" \
+               -DSHA1DC_CUSTOM_INCLUDE_UBC_CHECK_C="\"git-compat-util.h\""
+endif
+endif
+endif
+endif
+
+ifdef OPENSSL_SHA1_UNSAFE
+ifndef OPENSSL_SHA1
+       EXTLIBS += $(LIB_4_CRYPTO)
+       BASIC_CFLAGS += -DSHA1_OPENSSL_UNSAFE
+endif
+else
+ifdef BLK_SHA1_UNSAFE
+ifndef BLK_SHA1
+       LIB_OBJS += block-sha1/sha1.o
+       BASIC_CFLAGS += -DSHA1_BLK_UNSAFE
+endif
+else
+ifdef APPLE_COMMON_CRYPTO_SHA1_UNSAFE
+ifndef APPLE_COMMON_CRYPTO_SHA1
+       COMPAT_CFLAGS += -DCOMMON_DIGEST_FOR_OPENSSL
+       BASIC_CFLAGS += -DSHA1_APPLE_UNSAFE
+endif
+endif
+endif
+endif
+
+ifdef OPENSSL_SHA256
+       EXTLIBS += $(LIB_4_CRYPTO)
+       BASIC_CFLAGS += -DSHA256_OPENSSL
+else
+ifdef NETTLE_SHA256
+       BASIC_CFLAGS += -DSHA256_NETTLE
+       EXTLIBS += -lnettle
+else
+ifdef GCRYPT_SHA256
+       BASIC_CFLAGS += -DSHA256_GCRYPT
+       EXTLIBS += -lgcrypt
+else
+       LIB_OBJS += sha256/block/sha256.o
+       BASIC_CFLAGS += -DSHA256_BLK
+endif
+endif
+endif
+
+ifdef SHA1_MAX_BLOCK_SIZE
+       LIB_OBJS += compat/sha1-chunked.o
+       BASIC_CFLAGS += -DSHA1_MAX_BLOCK_SIZE="$(SHA1_MAX_BLOCK_SIZE)"
+endif
+ifdef NO_HSTRERROR
+       COMPAT_CFLAGS += -DNO_HSTRERROR
+       COMPAT_OBJS += compat/hstrerror.o
+endif
+ifdef NO_MEMMEM
+       COMPAT_CFLAGS += -DNO_MEMMEM
+       COMPAT_OBJS += compat/memmem.o
+endif
+ifdef NO_GETPAGESIZE
+       COMPAT_CFLAGS += -DNO_GETPAGESIZE
+endif
+ifdef INTERNAL_QSORT
+       COMPAT_CFLAGS += -DINTERNAL_QSORT
+endif
+ifdef HAVE_ISO_QSORT_S
+       COMPAT_CFLAGS += -DHAVE_ISO_QSORT_S
+else
+       COMPAT_OBJS += compat/qsort_s.o
+endif
+ifdef RUNTIME_PREFIX
+       COMPAT_CFLAGS += -DRUNTIME_PREFIX
+endif
+
+ifdef NO_PTHREADS
+       BASIC_CFLAGS += -DNO_PTHREADS
+else
+       BASIC_CFLAGS += $(PTHREAD_CFLAGS)
+       EXTLIBS += $(PTHREAD_LIBS)
+endif
+
+ifdef HAVE_PATHS_H
+       BASIC_CFLAGS += -DHAVE_PATHS_H
+endif
+
+ifdef HAVE_LIBCHARSET_H
+       BASIC_CFLAGS += -DHAVE_LIBCHARSET_H
+       EXTLIBS += $(CHARSET_LIB)
+endif
+
+ifdef HAVE_STRINGS_H
+       BASIC_CFLAGS += -DHAVE_STRINGS_H
+endif
+
+ifdef HAVE_DEV_TTY
+       BASIC_CFLAGS += -DHAVE_DEV_TTY
+endif
+
+ifdef DIR_HAS_BSD_GROUP_SEMANTICS
+       COMPAT_CFLAGS += -DDIR_HAS_BSD_GROUP_SEMANTICS
+endif
+ifdef UNRELIABLE_FSTAT
+       BASIC_CFLAGS += -DUNRELIABLE_FSTAT
+endif
+ifdef NO_REGEX
+       COMPAT_CFLAGS += -Icompat/regex
+       COMPAT_OBJS += compat/regex/regex.o
+else
+ifdef USE_ENHANCED_BASIC_REGULAR_EXPRESSIONS
+       COMPAT_CFLAGS += -DUSE_ENHANCED_BASIC_REGULAR_EXPRESSIONS
+       COMPAT_OBJS += compat/regcomp_enhanced.o
+endif
+endif
+ifdef NATIVE_CRLF
+       BASIC_CFLAGS += -DNATIVE_CRLF
+endif
+
+ifdef USE_NED_ALLOCATOR
+       COMPAT_CFLAGS += -Icompat/nedmalloc
+       COMPAT_OBJS += compat/nedmalloc/nedmalloc.o
+       OVERRIDE_STRDUP = YesPlease
+endif
+
+ifdef OVERRIDE_STRDUP
+       COMPAT_CFLAGS += -DOVERRIDE_STRDUP
+       COMPAT_OBJS += compat/strdup.o
+endif
+
+ifdef GIT_TEST_CMP_USE_COPIED_CONTEXT
+       export GIT_TEST_CMP_USE_COPIED_CONTEXT
+endif
+
+ifndef NO_MSGFMT_EXTENDED_OPTIONS
+       MSGFMT += --check
+endif
+
+ifdef HAVE_CLOCK_GETTIME
+       BASIC_CFLAGS += -DHAVE_CLOCK_GETTIME
+endif
+
+ifdef HAVE_CLOCK_MONOTONIC
+       BASIC_CFLAGS += -DHAVE_CLOCK_MONOTONIC
+endif
+
+ifdef HAVE_SYNC_FILE_RANGE
+       BASIC_CFLAGS += -DHAVE_SYNC_FILE_RANGE
+endif
+
+ifdef HAVE_SYSINFO
+       BASIC_CFLAGS += -DHAVE_SYSINFO
+endif
+
+ifdef HAVE_BSD_SYSCTL
+       BASIC_CFLAGS += -DHAVE_BSD_SYSCTL
+endif
+
+ifdef HAVE_GETDELIM
+       BASIC_CFLAGS += -DHAVE_GETDELIM
+endif
+
+ifneq ($(findstring arc4random,$(CSPRNG_METHOD)),)
+       BASIC_CFLAGS += -DHAVE_ARC4RANDOM
+endif
+
+ifneq ($(findstring libbsd,$(CSPRNG_METHOD)),)
+       BASIC_CFLAGS += -DHAVE_ARC4RANDOM_LIBBSD
+       EXTLIBS += -lbsd
+endif
+
+ifneq ($(findstring getrandom,$(CSPRNG_METHOD)),)
+       BASIC_CFLAGS += -DHAVE_GETRANDOM
+endif
+
+ifneq ($(findstring getentropy,$(CSPRNG_METHOD)),)
+       BASIC_CFLAGS += -DHAVE_GETENTROPY
+endif
+
+ifneq ($(findstring rtlgenrandom,$(CSPRNG_METHOD)),)
+       BASIC_CFLAGS += -DHAVE_RTLGENRANDOM
+endif
+
+ifneq ($(findstring openssl,$(CSPRNG_METHOD)),)
+       BASIC_CFLAGS += -DHAVE_OPENSSL_CSPRNG
+       EXTLIBS += -lcrypto -lssl
+endif
+
+ifndef HAVE_PLATFORM_PROCINFO
+       COMPAT_OBJS += compat/stub/procinfo.o
+endif
+
+ifdef RUNTIME_PREFIX
+
+        ifdef HAVE_BSD_KERN_PROC_SYSCTL
+               BASIC_CFLAGS += -DHAVE_BSD_KERN_PROC_SYSCTL
+        endif
+
+        ifneq ($(PROCFS_EXECUTABLE_PATH),)
+               pep_SQ = $(subst ','\'',$(PROCFS_EXECUTABLE_PATH))
+               BASIC_CFLAGS += '-DPROCFS_EXECUTABLE_PATH="$(pep_SQ)"'
+        endif
+
+        ifdef HAVE_NS_GET_EXECUTABLE_PATH
+               BASIC_CFLAGS += -DHAVE_NS_GET_EXECUTABLE_PATH
+        endif
+
+        ifdef HAVE_ZOS_GET_EXECUTABLE_PATH
+               BASIC_CFLAGS += -DHAVE_ZOS_GET_EXECUTABLE_PATH
+        endif
+
+        ifdef HAVE_WPGMPTR
+               BASIC_CFLAGS += -DHAVE_WPGMPTR
+        endif
+
+endif
+
+ifdef FILENO_IS_A_MACRO
+       COMPAT_CFLAGS += -DFILENO_IS_A_MACRO
+       COMPAT_OBJS += compat/fileno.o
+endif
+
+ifdef NEED_ACCESS_ROOT_HANDLER
+       COMPAT_CFLAGS += -DNEED_ACCESS_ROOT_HANDLER
+       COMPAT_OBJS += compat/access.o
+endif
+
+ifdef FSMONITOR_DAEMON_BACKEND
+       COMPAT_CFLAGS += -DHAVE_FSMONITOR_DAEMON_BACKEND
+       COMPAT_OBJS += compat/fsmonitor/fsm-listen-$(FSMONITOR_DAEMON_BACKEND).o
+       COMPAT_OBJS += compat/fsmonitor/fsm-health-$(FSMONITOR_DAEMON_BACKEND).o
+       COMPAT_OBJS += compat/fsmonitor/fsm-ipc-$(FSMONITOR_DAEMON_BACKEND).o
+endif
+
+ifdef FSMONITOR_OS_SETTINGS
+       COMPAT_CFLAGS += -DHAVE_FSMONITOR_OS_SETTINGS
+       COMPAT_OBJS += compat/fsmonitor/fsm-settings-$(FSMONITOR_OS_SETTINGS).o
+       COMPAT_OBJS += compat/fsmonitor/fsm-path-utils-$(FSMONITOR_OS_SETTINGS).o
+endif
+
+ifdef WITH_BREAKING_CHANGES
+       BASIC_CFLAGS += -DWITH_BREAKING_CHANGES
+endif
+
+ifdef CHECK_ASSERTION_SIDE_EFFECTS
+       BASIC_CFLAGS += -DCHECK_ASSERTION_SIDE_EFFECTS
+endif
+
+ifdef INCLUDE_LIBGIT_RS
+       # Enable symbol hiding in contrib/libgit-sys/libgitpub.a without making
+       # us rebuild the whole tree every time we run a Rust build.
+       BASIC_CFLAGS += -fvisibility=hidden
+endif
+
+ifeq ($(TCLTK_PATH),)
+NO_TCLTK = NoThanks
+endif
+
+ifeq ($(PERL_PATH),)
+NO_PERL = NoThanks
+endif
+
+ifeq ($(PYTHON_PATH),)
+NO_PYTHON = NoThanks
+endif
+
+ifndef PAGER_ENV
+PAGER_ENV = LESS=FRX LV=-c
+endif
+
+ifdef NO_INSTALL_HARDLINKS
+       export NO_INSTALL_HARDLINKS
+endif
+
+### profile feedback build
+#
+
+# Can adjust this to be a global directory if you want to do extended
+# data gathering
+PROFILE_DIR := $(CURDIR)
+
+ifeq ("$(PROFILE)","GEN")
+       BASIC_CFLAGS += -fprofile-generate=$(PROFILE_DIR) -DNO_NORETURN=1
+       EXTLIBS += -lgcov
+       export CCACHE_DISABLE = t
+       V = 1
+else
+ifneq ("$(PROFILE)","")
+       BASIC_CFLAGS += -fprofile-use=$(PROFILE_DIR) -fprofile-correction -DNO_NORETURN=1
+       export CCACHE_DISABLE = t
+       V = 1
+endif
+endif
+
+# Shell quote (do not use $(call) to accommodate ancient setups);
+
+ETC_GITCONFIG_SQ = $(subst ','\'',$(ETC_GITCONFIG))
+ETC_GITATTRIBUTES_SQ = $(subst ','\'',$(ETC_GITATTRIBUTES))
+
+DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
+NO_GETTEXT_SQ = $(subst ','\'',$(NO_GETTEXT))
+bindir_SQ = $(subst ','\'',$(bindir))
+bindir_relative_SQ = $(subst ','\'',$(bindir_relative))
+mandir_SQ = $(subst ','\'',$(mandir))
+mandir_relative_SQ = $(subst ','\'',$(mandir_relative))
+infodir_relative_SQ = $(subst ','\'',$(infodir_relative))
+bash_completion_dir_SQ = $(subst ','\'',$(bash_completion_dir))
+perllibdir_SQ = $(subst ','\'',$(perllibdir))
+localedir_SQ = $(subst ','\'',$(localedir))
+localedir_relative_SQ = $(subst ','\'',$(localedir_relative))
+gitexecdir_SQ = $(subst ','\'',$(gitexecdir))
+gitexecdir_relative_SQ = $(subst ','\'',$(gitexecdir_relative))
+template_dir_SQ = $(subst ','\'',$(template_dir))
+htmldir_relative_SQ = $(subst ','\'',$(htmldir_relative))
+prefix_SQ = $(subst ','\'',$(prefix))
+perllibdir_relative_SQ = $(subst ','\'',$(perllibdir_relative))
+gitwebdir_SQ = $(subst ','\'',$(gitwebdir))
+gitwebstaticdir_SQ = $(subst ','\'',$(gitwebstaticdir))
+
+SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
+TEST_SHELL_PATH_SQ = $(subst ','\'',$(TEST_SHELL_PATH))
+PERL_PATH_SQ = $(subst ','\'',$(PERL_PATH))
+PYTHON_PATH_SQ = $(subst ','\'',$(PYTHON_PATH))
+TCLTK_PATH_SQ = $(subst ','\'',$(TCLTK_PATH))
+DIFF_SQ = $(subst ','\'',$(DIFF))
+PERLLIB_EXTRA_SQ = $(subst ','\'',$(PERLLIB_EXTRA))
+
+# RUNTIME_PREFIX's resolution logic requires resource paths to be expressed
+# relative to each other and share an installation path.
+#
+# This is a dependency in:
+# - Git's binary RUNTIME_PREFIX logic in (see "exec_cmd.c").
+# - The runtime prefix Perl header (see
+#   "perl/header_templates/runtime_prefix.template.pl").
+ifdef RUNTIME_PREFIX
+
+ifneq ($(filter /%,$(firstword $(gitexecdir_relative))),)
+$(error RUNTIME_PREFIX requires a relative gitexecdir, not: $(gitexecdir))
+endif
+
+ifneq ($(filter /%,$(firstword $(localedir_relative))),)
+$(error RUNTIME_PREFIX requires a relative localedir, not: $(localedir))
+endif
+
+ifndef NO_PERL
+ifneq ($(filter /%,$(firstword $(perllibdir_relative))),)
+$(error RUNTIME_PREFIX requires a relative perllibdir, not: $(perllibdir))
+endif
+endif
+
+endif
+
+# We must filter out any object files from $(GITLIBS),
+# as it is typically used like:
+#
+#   foo: foo.o $(GITLIBS)
+#      $(CC) $(filter %.o,$^) $(LIBS)
+#
+# where we use it as a dependency. Since we also pull object files
+# from the dependency list, that would make each entry appear twice.
+LIBS = $(filter-out %.o, $(GITLIBS)) $(EXTLIBS)
+
+BASIC_CFLAGS += $(COMPAT_CFLAGS)
+LIB_OBJS += $(COMPAT_OBJS)
+
+# Quote for C
+
+ifdef DEFAULT_EDITOR
+DEFAULT_EDITOR_CQ = "$(subst ",\",$(subst \,\\,$(DEFAULT_EDITOR)))"
+DEFAULT_EDITOR_CQ_SQ = $(subst ','\'',$(DEFAULT_EDITOR_CQ))
+
+BASIC_CFLAGS += -DDEFAULT_EDITOR='$(DEFAULT_EDITOR_CQ_SQ)'
+endif
+
+ifdef DEFAULT_PAGER
+DEFAULT_PAGER_CQ = "$(subst ",\",$(subst \,\\,$(DEFAULT_PAGER)))"
+DEFAULT_PAGER_CQ_SQ = $(subst ','\'',$(DEFAULT_PAGER_CQ))
+
+BASIC_CFLAGS += -DDEFAULT_PAGER='$(DEFAULT_PAGER_CQ_SQ)'
+endif
+
+ifdef SHELL_PATH
+SHELL_PATH_CQ = "$(subst ",\",$(subst \,\\,$(SHELL_PATH)))"
+SHELL_PATH_CQ_SQ = $(subst ','\'',$(SHELL_PATH_CQ))
+
+BASIC_CFLAGS += -DSHELL_PATH='$(SHELL_PATH_CQ_SQ)'
+endif
+
+GIT_USER_AGENT_SQ = $(subst ','\'',$(GIT_USER_AGENT))
+GIT_USER_AGENT_CQ = "$(subst ",\",$(subst \,\\,$(GIT_USER_AGENT)))"
+GIT_USER_AGENT_CQ_SQ = $(subst ','\'',$(GIT_USER_AGENT_CQ))
+GIT-USER-AGENT: FORCE
+       @if test x'$(GIT_USER_AGENT_SQ)' != x"`cat GIT-USER-AGENT 2>/dev/null`"; then \
+               echo '$(GIT_USER_AGENT_SQ)' >GIT-USER-AGENT; \
+       fi
+
+ifdef DEFAULT_HELP_FORMAT
+BASIC_CFLAGS += -DDEFAULT_HELP_FORMAT='"$(DEFAULT_HELP_FORMAT)"'
+endif
+
+ALL_CFLAGS += $(BASIC_CFLAGS)
+ALL_LDFLAGS += $(BASIC_LDFLAGS)
+
+export DIFF TAR INSTALL DESTDIR SHELL_PATH
+
+
+### Build rules
+
+SHELL = $(SHELL_PATH)
+
+all:: shell_compatibility_test
+
+ifeq "$(PROFILE)" "BUILD"
+all:: profile
+endif
+
+profile:: profile-clean
+       $(MAKE) PROFILE=GEN all
+       $(MAKE) PROFILE=GEN -j1 test
+       @if test -n "$$GIT_PERF_REPO" || test -d .git; then \
+               $(MAKE) PROFILE=GEN -j1 perf; \
+       else \
+               echo "Skipping profile of perf tests..."; \
+       fi
+       $(MAKE) PROFILE=USE all
+
+profile-fast: profile-clean
+       $(MAKE) PROFILE=GEN all
+       $(MAKE) PROFILE=GEN -j1 perf
+       $(MAKE) PROFILE=USE all
+
+
+all:: $(ALL_COMMANDS_TO_INSTALL) $(SCRIPT_LIB) $(OTHER_PROGRAMS) GIT-BUILD-OPTIONS
+ifneq (,$X)
+       $(QUIET_BUILT_IN)$(foreach p,$(patsubst %$X,%,$(filter %$X,$(ALL_COMMANDS_TO_INSTALL) $(OTHER_PROGRAMS))), if test ! -d '$p' && test ! '$p' -ef '$p$X'; then $(RM) '$p'; fi;)
+endif
+
+all::
+ifndef NO_TCLTK
+       $(QUIET_SUBDIR0)git-gui $(QUIET_SUBDIR1) gitexecdir='$(gitexec_instdir_SQ)' all
+       $(QUIET_SUBDIR0)gitk-git $(QUIET_SUBDIR1) all
+endif
+       $(QUIET_SUBDIR0)templates $(QUIET_SUBDIR1) SHELL_PATH='$(SHELL_PATH_SQ)' PERL_PATH='$(PERL_PATH_SQ)'
+
+# If you add a new fuzzer, please also make sure to run it in
+# ci/run-build-and-minimal-fuzzers.sh so that we make sure it still links and
+# runs in the future.
+FUZZ_OBJS += oss-fuzz/dummy-cmd-main.o
+FUZZ_OBJS += oss-fuzz/fuzz-commit-graph.o
+FUZZ_OBJS += oss-fuzz/fuzz-config.o
+FUZZ_OBJS += oss-fuzz/fuzz-credential-from-url-gently.o
+FUZZ_OBJS += oss-fuzz/fuzz-date.o
+FUZZ_OBJS += oss-fuzz/fuzz-pack-headers.o
+FUZZ_OBJS += oss-fuzz/fuzz-pack-idx.o
+FUZZ_OBJS += oss-fuzz/fuzz-parse-attr-line.o
+FUZZ_OBJS += oss-fuzz/fuzz-url-decode-mem.o
+.PHONY: fuzz-objs
+fuzz-objs: $(FUZZ_OBJS)
+
+# Always build fuzz objects even if not testing, to prevent bit-rot.
+all:: $(FUZZ_OBJS)
+
+FUZZ_PROGRAMS += $(patsubst %.o,%,$(filter-out %dummy-cmd-main.o,$(FUZZ_OBJS)))
+
+# Build fuzz programs when possible, even without the necessary fuzzing support,
+# to prevent bit-rot.
+ifdef LINK_FUZZ_PROGRAMS
+all:: $(FUZZ_PROGRAMS)
+endif
+
+please_set_SHELL_PATH_to_a_more_modern_shell:
+       @$$(:)
+
+shell_compatibility_test: please_set_SHELL_PATH_to_a_more_modern_shell
+
+strip: $(PROGRAMS) git$X
+       $(STRIP) $(STRIP_OPTS) $^
+
+### Target-specific flags and dependencies
+
+# The generic compilation pattern rule and automatically
+# computed header dependencies (falling back to a dependency on
+# LIB_H) are enough to describe how most targets should be built,
+# but some targets are special enough to need something a little
+# different.
+#
+# - When a source file "foo.c" #includes a generated header file,
+#   we need to list that dependency for the "foo.o" target.
+#
+#   We also list it from other targets that are built from foo.c
+#   like "foo.sp" and "foo.s", even though that is easy to forget
+#   to do because the generated header is already present around
+#   after a regular build attempt.
+#
+# - Some code depends on configuration kept in makefile
+#   variables. The target-specific variable EXTRA_CPPFLAGS can
+#   be used to convey that information to the C preprocessor
+#   using -D options.
+#
+#   The "foo.o" target should have a corresponding dependency on
+#   a file that changes when the value of the makefile variable
+#   changes.  For example, targets making use of the
+#   $(GIT_VERSION) variable depend on GIT-VERSION-FILE.
+#
+#   Technically the ".sp" and ".s" targets do not need this
+#   dependency because they are force-built, but they get the
+#   same dependency for consistency. This way, you do not have to
+#   know how each target is implemented. And it means the
+#   dependencies here will not need to change if the force-build
+#   details change some day.
+
+git.sp git.s git.o: GIT-PREFIX
+git.sp git.s git.o: EXTRA_CPPFLAGS = \
+       '-DGIT_HTML_PATH="$(htmldir_relative_SQ)"' \
+       '-DGIT_MAN_PATH="$(mandir_relative_SQ)"' \
+       '-DGIT_INFO_PATH="$(infodir_relative_SQ)"'
+
+git$X: git.o GIT-LDFLAGS $(BUILTIN_OBJS) $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) \
+               $(filter %.o,$^) $(LIBS)
+
+help.sp help.s help.o: command-list.h
+builtin/bugreport.sp builtin/bugreport.s builtin/bugreport.o: hook-list.h
+
+builtin/help.sp builtin/help.s builtin/help.o: config-list.h GIT-PREFIX
+builtin/help.sp builtin/help.s builtin/help.o: EXTRA_CPPFLAGS = \
+       '-DGIT_HTML_PATH="$(htmldir_relative_SQ)"' \
+       '-DGIT_MAN_PATH="$(mandir_relative_SQ)"' \
+       '-DGIT_INFO_PATH="$(infodir_relative_SQ)"'
+
+PAGER_ENV_SQ = $(subst ','\'',$(PAGER_ENV))
+PAGER_ENV_CQ = "$(subst ",\",$(subst \,\\,$(PAGER_ENV)))"
+PAGER_ENV_CQ_SQ = $(subst ','\'',$(PAGER_ENV_CQ))
+pager.sp pager.s pager.o: EXTRA_CPPFLAGS = \
+       -DPAGER_ENV='$(PAGER_ENV_CQ_SQ)'
+
+version-def.h: version-def.h.in GIT-VERSION-GEN GIT-VERSION-FILE GIT-USER-AGENT
+       $(QUIET_GEN)$(call version_gen,"$(shell pwd)",$<,$@)
+
+version.sp version.s version.o: version-def.h
+
+$(BUILT_INS): git$X
+       $(QUIET_BUILT_IN)$(RM) $@ && \
+       ln $< $@ 2>/dev/null || \
+       ln -s $< $@ 2>/dev/null || \
+       cp $< $@
+
+config-list.h: generate-configlist.sh
+
+config-list.h: Documentation/*config.adoc Documentation/config/*.adoc
+       $(QUIET_GEN)$(SHELL_PATH) ./generate-configlist.sh . $@
+
+command-list.h: generate-cmdlist.sh command-list.txt
+
+command-list.h: $(wildcard Documentation/git*.adoc)
+       $(QUIET_GEN)$(SHELL_PATH) ./generate-cmdlist.sh \
+               $(patsubst %,--exclude-program %,$(EXCLUDED_PROGRAMS)) \
+               . $@
+
+hook-list.h: generate-hooklist.sh Documentation/githooks.adoc
+       $(QUIET_GEN)$(SHELL_PATH) ./generate-hooklist.sh . $@
+
+SCRIPT_DEFINES = $(SHELL_PATH_SQ):$(DIFF_SQ):\
+       $(localedir_SQ):$(USE_GETTEXT_SCHEME):$(SANE_TOOL_PATH_SQ):\
+       $(gitwebdir_SQ):$(PERL_PATH_SQ):$(PAGER_ENV):\
+       $(perllibdir_SQ)
+GIT-SCRIPT-DEFINES: FORCE
+       @FLAGS='$(SCRIPT_DEFINES)'; \
+           if test x"$$FLAGS" != x"`cat $@ 2>/dev/null`" ; then \
+               echo >&2 "    * new script parameters"; \
+               echo "$$FLAGS" >$@; \
+            fi
+
+$(SCRIPT_SH_GEN) $(SCRIPT_LIB) : % : %.sh generate-script.sh GIT-BUILD-OPTIONS GIT-SCRIPT-DEFINES
+       $(QUIET_GEN)./generate-script.sh "$<" "$@+" ./GIT-BUILD-OPTIONS && \
+       mv $@+ $@
+
+git.rc: git.rc.in GIT-VERSION-GEN GIT-VERSION-FILE
+       $(QUIET_GEN)$(call version_gen,"$(shell pwd)",$<,$@)
+
+git.res: git.rc GIT-PREFIX
+       $(QUIET_RC)$(RC) -i $< -o $@
+
+# This makes sure we depend on the NO_PERL setting itself.
+$(SCRIPT_PERL_GEN): GIT-BUILD-OPTIONS
+
+# Used for substitution in Perl modules. Disabled when using RUNTIME_PREFIX
+# since the locale directory is injected.
+perl_localedir_SQ = $(localedir_SQ)
+
+ifndef NO_PERL
+PERL_HEADER_TEMPLATE = perl/header_templates/fixed_prefix.template.pl
+PERL_DEFINES =
+PERL_DEFINES += $(PERL_PATH_SQ)
+PERL_DEFINES += $(PERLLIB_EXTRA_SQ)
+PERL_DEFINES += $(perllibdir_SQ)
+PERL_DEFINES += $(RUNTIME_PREFIX)
+PERL_DEFINES += $(NO_PERL_CPAN_FALLBACKS)
+PERL_DEFINES += $(NO_GETTEXT)
+
+# Support Perl runtime prefix. In this mode, a different header is installed
+# into Perl scripts.
+ifdef RUNTIME_PREFIX
+
+PERL_HEADER_TEMPLATE = perl/header_templates/runtime_prefix.template.pl
+
+# Don't export a fixed $(localedir) path; it will be resolved by the Perl header
+# at runtime.
+perl_localedir_SQ =
+
+endif
+
+PERL_DEFINES += $(gitexecdir) $(perllibdir) $(localedir)
+
+$(SCRIPT_PERL_GEN): % : %.perl generate-perl.sh GIT-PERL-DEFINES GIT-PERL-HEADER GIT-VERSION-FILE
+       $(QUIET_GEN)$(SHELL_PATH) generate-perl.sh ./GIT-BUILD-OPTIONS ./GIT-VERSION-FILE GIT-PERL-HEADER "$<" "$@+" && \
+       mv $@+ $@
+
+PERL_DEFINES := $(subst $(space),:,$(PERL_DEFINES))
+GIT-PERL-DEFINES: FORCE
+       @FLAGS='$(PERL_DEFINES)'; \
+           if test x"$$FLAGS" != x"`cat $@ 2>/dev/null`" ; then \
+               echo >&2 "    * new perl-specific parameters"; \
+               echo "$$FLAGS" >$@; \
+           fi
+
+GIT-PERL-HEADER: $(PERL_HEADER_TEMPLATE) GIT-PERL-DEFINES Makefile
+       $(QUIET_GEN) \
+       INSTLIBDIR='$(perllibdir_SQ)' && \
+       INSTLIBDIR_EXTRA='$(PERLLIB_EXTRA_SQ)' && \
+       INSTLIBDIR="$$INSTLIBDIR$${INSTLIBDIR_EXTRA:+:$$INSTLIBDIR_EXTRA}" && \
+       sed -e 's=@PATHSEP@=$(pathsep)=g' \
+           -e "s=@INSTLIBDIR@=$$INSTLIBDIR=g" \
+           -e 's=@PERLLIBDIR_REL@=$(perllibdir_relative_SQ)=g' \
+           -e 's=@GITEXECDIR_REL@=$(gitexecdir_relative_SQ)=g' \
+           -e 's=@LOCALEDIR_REL@=$(localedir_relative_SQ)=g' \
+           $< >$@+ && \
+       mv $@+ $@
+
+.PHONY: perllibdir
+perllibdir:
+       @echo '$(perllibdir_SQ)'
+
+git-instaweb: git-instaweb.sh generate-script.sh GIT-BUILD-OPTIONS GIT-SCRIPT-DEFINES
+       $(QUIET_GEN)./generate-script.sh "$<" "$@+" ./GIT-BUILD-OPTIONS && \
+       chmod +x $@+ && \
+       mv $@+ $@
+else # NO_PERL
+$(SCRIPT_PERL_GEN) git-instaweb: % : unimplemented.sh
+       $(QUIET_GEN) \
+       sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+           -e 's|@REASON@|NO_PERL=$(NO_PERL)|g' \
+           unimplemented.sh >$@+ && \
+       chmod +x $@+ && \
+       mv $@+ $@
+endif # NO_PERL
+
+# This makes sure we depend on the NO_PYTHON setting itself.
+$(SCRIPT_PYTHON_GEN): GIT-BUILD-OPTIONS
+
+ifndef NO_PYTHON
+$(SCRIPT_PYTHON_GEN): generate-python.sh
+$(SCRIPT_PYTHON_GEN): % : %.py
+       $(QUIET_GEN)$(SHELL_PATH) generate-python.sh ./GIT-BUILD-OPTIONS "$<" "$@"
+else # NO_PYTHON
+$(SCRIPT_PYTHON_GEN): % : unimplemented.sh
+       $(QUIET_GEN) \
+       sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+           -e 's|@REASON@|NO_PYTHON=$(NO_PYTHON)|g' \
+           unimplemented.sh >$@+ && \
+       chmod +x $@+ && \
+       mv $@+ $@
+endif # NO_PYTHON
+
+CONFIGURE_RECIPE = sed -e 's/@GIT_VERSION@/$(GIT_VERSION)/g' \
+                       configure.ac >configure.ac+ && \
+                  autoconf -o configure configure.ac+ && \
+                  $(RM) configure.ac+
+
+configure: configure.ac GIT-VERSION-FILE
+       $(QUIET_GEN)$(CONFIGURE_RECIPE)
+
+ifdef AUTOCONFIGURED
+# We avoid depending on 'configure' here, because it gets rebuilt
+# every time GIT-VERSION-FILE is modified, only to update the embedded
+# version number string, which config.status does not care about.  We
+# do want to recheck when the platform/environment detection logic
+# changes, hence this depends on configure.ac.
+config.status: configure.ac
+       $(QUIET_GEN)$(CONFIGURE_RECIPE) && \
+       if test -f config.status; then \
+         ./config.status --recheck; \
+       else \
+         ./configure; \
+       fi
+reconfigure config.mak.autogen: config.status
+       $(QUIET_GEN)./config.status
+.PHONY: reconfigure # This is a convenience target.
+endif
+
+TEST_OBJS := $(patsubst %$X,%.o,$(TEST_PROGRAMS)) $(patsubst %,t/helper/%,$(TEST_BUILTINS_OBJS))
+
+.PHONY: test-objs
+test-objs: $(TEST_OBJS)
+
+GIT_OBJS += $(LIB_OBJS)
+GIT_OBJS += $(BUILTIN_OBJS)
+GIT_OBJS += common-main.o
+GIT_OBJS += git.o
+.PHONY: git-objs
+git-objs: $(GIT_OBJS)
+
+SCALAR_OBJS += scalar.o
+.PHONY: scalar-objs
+scalar-objs: $(SCALAR_OBJS)
+
+OBJECTS += $(GIT_OBJS)
+OBJECTS += $(SCALAR_OBJS)
+OBJECTS += $(PROGRAM_OBJS)
+OBJECTS += $(TEST_OBJS)
+OBJECTS += $(FUZZ_OBJS)
+OBJECTS += $(REFTABLE_TEST_OBJS)
+OBJECTS += $(UNIT_TEST_OBJS)
+OBJECTS += $(CLAR_TEST_OBJS)
+OBJECTS += $(patsubst %,$(UNIT_TEST_DIR)/%.o,$(UNIT_TEST_PROGRAMS))
+
+ifdef INCLUDE_LIBGIT_RS
+       OBJECTS += contrib/libgit-sys/public_symbol_export.o
+endif
+
+ifndef NO_CURL
+       OBJECTS += http.o http-walker.o remote-curl.o
+endif
+
+.PHONY: objects
+objects: $(OBJECTS)
+
+dep_files := $(foreach f,$(OBJECTS),$(dir $f).depend/$(notdir $f).d)
+dep_dirs := $(addsuffix .depend,$(sort $(dir $(OBJECTS))))
+
+ifeq ($(COMPUTE_HEADER_DEPENDENCIES),yes)
+$(dep_dirs):
+       @mkdir -p $@
+
+missing_dep_dirs := $(filter-out $(wildcard $(dep_dirs)),$(dep_dirs))
+dep_file = $(dir $@).depend/$(notdir $@).d
+dep_args = -MF $(dep_file) -MQ $@ -MMD -MP
+endif
+
+ifneq ($(COMPUTE_HEADER_DEPENDENCIES),yes)
+missing_dep_dirs =
+dep_args =
+endif
+
+compdb_dir = compile_commands
+
+ifeq ($(GENERATE_COMPILATION_DATABASE),yes)
+missing_compdb_dir = $(filter-out $(wildcard $(compdb_dir)), $(compdb_dir))
+$(missing_compdb_dir):
+       @mkdir -p $@
+
+compdb_file = $(compdb_dir)/$(subst /,-,$@.json)
+compdb_args = -MJ $(compdb_file)
+else
+missing_compdb_dir =
+compdb_args =
+endif
+
+$(OBJECTS): %.o: %.c GIT-CFLAGS $(missing_dep_dirs) $(missing_compdb_dir)
+       $(QUIET_CC)$(CC) -o $*.o -c $(dep_args) $(compdb_args) $(ALL_CFLAGS) $(EXTRA_CPPFLAGS) $<
+
+%.s: %.c GIT-CFLAGS FORCE
+       $(QUIET_CC)$(CC) -o $@ -S $(ALL_CFLAGS) $(EXTRA_CPPFLAGS) $<
+
+ifdef USE_COMPUTED_HEADER_DEPENDENCIES
+# Take advantage of gcc's on-the-fly dependency generation
+# See <https://gcc.gnu.org/gcc-3.0/features.html>.
+dep_files_present := $(wildcard $(dep_files))
+ifneq ($(dep_files_present),)
+include $(dep_files_present)
+endif
+else
+$(OBJECTS): $(LIB_H) $(GENERATED_H)
+endif
+
+ifeq ($(GENERATE_COMPILATION_DATABASE),yes)
+all:: compile_commands.json
+compile_commands.json:
+       $(QUIET_GEN)sed -e '1s/^/[/' -e '$$s/,$$/]/' $(compdb_dir)/*.o.json > $@+
+       @if test -s $@+; then mv $@+ $@; else $(RM) $@+; fi
+endif
+
+exec-cmd.sp exec-cmd.s exec-cmd.o: GIT-PREFIX
+exec-cmd.sp exec-cmd.s exec-cmd.o: EXTRA_CPPFLAGS = \
+       '-DGIT_EXEC_PATH="$(gitexecdir_SQ)"' \
+       '-DGIT_LOCALE_PATH="$(localedir_relative_SQ)"' \
+       '-DBINDIR="$(bindir_relative_SQ)"' \
+       '-DFALLBACK_RUNTIME_PREFIX="$(prefix_SQ)"'
+
+setup.sp setup.s setup.o: GIT-PREFIX
+setup.sp setup.s setup.o: EXTRA_CPPFLAGS = \
+       -DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir_SQ)"'
+
+config.sp config.s config.o: GIT-PREFIX
+config.sp config.s config.o: EXTRA_CPPFLAGS = \
+       -DETC_GITCONFIG='"$(ETC_GITCONFIG_SQ)"'
+
+attr.sp attr.s attr.o: GIT-PREFIX
+attr.sp attr.s attr.o: EXTRA_CPPFLAGS = \
+       -DETC_GITATTRIBUTES='"$(ETC_GITATTRIBUTES_SQ)"'
+
+gettext.sp gettext.s gettext.o: GIT-PREFIX
+gettext.sp gettext.s gettext.o: EXTRA_CPPFLAGS = \
+       -DGIT_LOCALE_PATH='"$(localedir_relative_SQ)"'
+
+http-push.sp http.sp http-walker.sp remote-curl.sp imap-send.sp: SP_EXTRA_FLAGS += \
+       -DCURL_DISABLE_TYPECHECK
+
+pack-revindex.sp: SP_EXTRA_FLAGS += -Wno-memcpy-max-count
+
+ifdef NO_EXPAT
+http-walker.sp http-walker.s http-walker.o: EXTRA_CPPFLAGS = -DNO_EXPAT
+endif
+
+ifdef NO_REGEX
+compat/regex/regex.sp compat/regex/regex.o: EXTRA_CPPFLAGS = \
+       -DGAWK -DNO_MBSUPPORT
+endif
+
+ifdef USE_NED_ALLOCATOR
+compat/nedmalloc/nedmalloc.sp compat/nedmalloc/nedmalloc.o: EXTRA_CPPFLAGS = \
+       -DNDEBUG -DREPLACE_SYSTEM_ALLOCATOR
+compat/nedmalloc/nedmalloc.sp: SP_EXTRA_FLAGS += -Wno-non-pointer-null
+endif
+
+headless-git.o: compat/win32/headless.c GIT-CFLAGS
+       $(QUIET_CC)$(CC) $(ALL_CFLAGS) $(COMPAT_CFLAGS) \
+               -fno-stack-protector -o $@ -c -Wall -Wwrite-strings $<
+
+headless-git$X: headless-git.o git.res GIT-LDFLAGS
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) $(ALL_LDFLAGS) -mwindows -o $@ $< git.res
+
+git-%$X: %.o GIT-LDFLAGS $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)
+
+git-imap-send$X: imap-send.o $(IMAP_SEND_BUILDDEPS) GIT-LDFLAGS $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
+               $(IMAP_SEND_LDFLAGS) $(LIBS)
+
+git-http-fetch$X: http.o http-walker.o http-fetch.o GIT-LDFLAGS $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
+               $(CURL_LIBCURL) $(LIBS)
+git-http-push$X: http.o http-push.o GIT-LDFLAGS $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
+               $(CURL_LIBCURL) $(EXPAT_LIBEXPAT) $(LIBS)
+
+$(REMOTE_CURL_ALIASES): $(REMOTE_CURL_PRIMARY)
+       $(QUIET_LNCP)$(RM) $@ && \
+       ln $< $@ 2>/dev/null || \
+       ln -s $< $@ 2>/dev/null || \
+       cp $< $@
+
+$(REMOTE_CURL_PRIMARY): remote-curl.o http.o http-walker.o GIT-LDFLAGS $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
+               $(CURL_LIBCURL) $(EXPAT_LIBEXPAT) $(LIBS)
+
+scalar$X: scalar.o GIT-LDFLAGS $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) \
+               $(filter %.o,$^) $(LIBS)
+
+$(LIB_FILE): $(LIB_OBJS)
+       $(QUIET_AR)$(RM) $@ && $(AR) $(ARFLAGS) $@ $^
+
+$(RUST_LIB): Cargo.toml $(RUST_SOURCES)
+       $(QUIET_CARGO)cargo build $(CARGO_ARGS)
+
+.PHONY: rust
+rust: $(RUST_LIB)
+
+export DEFAULT_EDITOR DEFAULT_PAGER
+
+Documentation/GIT-EXCLUDED-PROGRAMS: FORCE
+       @EXCLUDED='EXCLUDED_PROGRAMS := $(EXCLUDED_PROGRAMS)'; \
+           if test x"$$EXCLUDED" != \
+               x"`cat Documentation/GIT-EXCLUDED-PROGRAMS 2>/dev/null`" ; then \
+               echo >&2 "    * new documentation flags"; \
+               echo "$$EXCLUDED" >Documentation/GIT-EXCLUDED-PROGRAMS; \
+            fi
+
+.PHONY: doc man man-perl html info pdf
+doc: man-perl
+       $(MAKE) -C Documentation all
+
+man: man-perl
+       $(MAKE) -C Documentation man
+
+man-perl: perl/build/man/man3/Git.3pm
+
+html:
+       $(MAKE) -C Documentation html
+
+info:
+       $(MAKE) -C Documentation info
+
+pdf:
+       $(MAKE) -C Documentation pdf
+
+XGETTEXT_FLAGS = \
+       --force-po \
+       --add-comments=TRANSLATORS: \
+       --msgid-bugs-address="Git Mailing List <git@vger.kernel.org>" \
+       --package-name=Git
+XGETTEXT_FLAGS_C = $(XGETTEXT_FLAGS) --language=C \
+       --keyword=_ --keyword=N_ --keyword="Q_:1,2"
+XGETTEXT_FLAGS_SH = $(XGETTEXT_FLAGS) --language=Shell \
+       --keyword=gettextln --keyword=eval_gettextln
+XGETTEXT_FLAGS_PERL = $(XGETTEXT_FLAGS) --language=Perl \
+       --keyword=__ --keyword=N__ --keyword="__n:1,2"
+MSGMERGE_FLAGS = --add-location --backup=off --update
+LOCALIZED_C = $(sort $(FOUND_C_SOURCES) $(FOUND_H_SOURCES) $(GENERATED_H))
+LOCALIZED_SH = $(sort $(SCRIPT_SH) git-sh-setup.sh)
+LOCALIZED_PERL = $(sort $(SCRIPT_PERL))
+
+ifdef XGETTEXT_INCLUDE_TESTS
+LOCALIZED_C += t/t0200/test.c
+LOCALIZED_SH += t/t0200/test.sh
+LOCALIZED_PERL += t/t0200/test.perl
+endif
+
+## We generate intermediate .build/pot/po/%.po files containing a
+## extract of the translations we find in each file in the source
+## tree. We will assemble them using msgcat to create the final
+## "po/git.pot" file.
+LOCALIZED_ALL_GEN_PO =
+
+LOCALIZED_C_GEN_PO = $(LOCALIZED_C:%=.build/pot/po/%.po)
+LOCALIZED_ALL_GEN_PO += $(LOCALIZED_C_GEN_PO)
+
+LOCALIZED_SH_GEN_PO = $(LOCALIZED_SH:%=.build/pot/po/%.po)
+LOCALIZED_ALL_GEN_PO += $(LOCALIZED_SH_GEN_PO)
+
+LOCALIZED_PERL_GEN_PO = $(LOCALIZED_PERL:%=.build/pot/po/%.po)
+LOCALIZED_ALL_GEN_PO += $(LOCALIZED_PERL_GEN_PO)
+
+## Gettext tools cannot work with our own custom PRItime type, so
+## we replace PRItime with PRIuMAX.  We need to update this to
+## PRIdMAX if we switch to a signed type later.
+$(LOCALIZED_C_GEN_PO): .build/pot/po/%.po: %
+       $(call mkdir_p_parent_template)
+       $(QUIET_XGETTEXT) \
+           if grep -q PRItime $<; then \
+               (\
+                       sed -e 's|PRItime|PRIuMAX|g' <$< \
+                               >.build/pot/po/$< && \
+                       cd .build/pot/po && \
+                       $(XGETTEXT) --omit-header \
+                               -o $(@:.build/pot/po/%=%) \
+                               $(XGETTEXT_FLAGS_C) $< && \
+                       rm $<; \
+               ); \
+           else \
+               $(XGETTEXT) --omit-header \
+                       -o $@ $(XGETTEXT_FLAGS_C) $<; \
+           fi
+
+$(LOCALIZED_SH_GEN_PO): .build/pot/po/%.po: %
+       $(call mkdir_p_parent_template)
+       $(QUIET_XGETTEXT)$(XGETTEXT) --omit-header \
+               -o$@ $(XGETTEXT_FLAGS_SH) $<
+
+$(LOCALIZED_PERL_GEN_PO): .build/pot/po/%.po: %
+       $(call mkdir_p_parent_template)
+       $(QUIET_XGETTEXT)$(XGETTEXT) --omit-header \
+               -o$@ $(XGETTEXT_FLAGS_PERL) $<
+
+define gen_pot_header
+$(XGETTEXT) $(XGETTEXT_FLAGS_C) \
+       -o - /dev/null | \
+sed -e 's|charset=CHARSET|charset=UTF-8|' \
+    -e 's|\(Last-Translator: \)FULL NAME <.*>|\1make by the Makefile|' \
+    -e 's|\(Language-Team: \)LANGUAGE <.*>|\1Git Mailing List <git@vger.kernel.org>|' \
+    >$@ && \
+echo '"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\\n"' >>$@
+endef
+
+.build/pot/git.header: $(LOCALIZED_ALL_GEN_PO)
+       $(call mkdir_p_parent_template)
+       $(QUIET_GEN)$(gen_pot_header)
+
+po/git.pot: .build/pot/git.header $(LOCALIZED_ALL_GEN_PO)
+       $(QUIET_GEN)$(MSGCAT) $^ >$@
+
+.PHONY: pot
+pot: po/git.pot
+
+define check_po_file_envvar
+       $(if $(PO_FILE), \
+               $(if $(filter po/%.po,$(PO_FILE)), , \
+                       $(error PO_FILE should match pattern: "po/%.po")), \
+               $(error PO_FILE is not defined))
+endef
+
+.PHONY: po-update
+po-update: po/git.pot
+       $(check_po_file_envvar)
+       @if test ! -e $(PO_FILE); then \
+               echo >&2 "error: $(PO_FILE) does not exist"; \
+               echo >&2 'To create an initial po file, use: "make po-init PO_FILE=po/XX.po"'; \
+               exit 1; \
+       fi
+       $(QUIET_MSGMERGE)$(MSGMERGE) $(MSGMERGE_FLAGS) $(PO_FILE) po/git.pot
+
+.PHONY: check-pot
+check-pot: $(LOCALIZED_ALL_GEN_PO)
+
+### TODO FIXME: Translating everything in these files is a bad
+### heuristic for "core", as we'll translate obscure error() messages
+### along with commonly seen i18n messages. A better heuristic would
+### be to e.g. use spatch to first remove error/die/warning
+### etc. messages.
+LOCALIZED_C_CORE =
+LOCALIZED_C_CORE += builtin/checkout.c
+LOCALIZED_C_CORE += builtin/clone.c
+LOCALIZED_C_CORE += builtin/index-pack.c
+LOCALIZED_C_CORE += builtin/push.c
+LOCALIZED_C_CORE += builtin/reset.c
+LOCALIZED_C_CORE += remote.c
+LOCALIZED_C_CORE += wt-status.c
+
+LOCALIZED_C_CORE_GEN_PO = $(LOCALIZED_C_CORE:%=.build/pot/po/%.po)
+
+.build/pot/git-core.header: $(LOCALIZED_C_CORE_GEN_PO)
+       $(call mkdir_p_parent_template)
+       $(QUIET_GEN)$(gen_pot_header)
+
+po/git-core.pot: .build/pot/git-core.header $(LOCALIZED_C_CORE_GEN_PO)
+       $(QUIET_GEN)$(MSGCAT) $^ >$@
+
+.PHONY: po-init
+po-init: po/git-core.pot
+       $(check_po_file_envvar)
+       @if test -e $(PO_FILE); then \
+               echo >&2 "error: $(PO_FILE) exists already"; \
+               exit 1; \
+       fi
+       $(QUIET_MSGINIT)msginit \
+               --input=$< \
+               --output=$(PO_FILE) \
+               --no-translator \
+               --locale=$(PO_FILE:po/%.po=%)
+
+## po/*.po files & their rules
+ifdef NO_GETTEXT
+POFILES :=
+MOFILES :=
+else
+POFILES := $(wildcard po/*.po)
+MOFILES := $(patsubst po/%.po,po/build/locale/%/LC_MESSAGES/git.mo,$(POFILES))
+
+all:: $(MOFILES)
+endif
+
+po/build/locale/%/LC_MESSAGES/git.mo: po/%.po
+       $(call mkdir_p_parent_template)
+       $(QUIET_MSGFMT)$(MSGFMT) -o $@ $<
+
+LIB_PERL := $(wildcard perl/Git.pm perl/Git/*.pm perl/Git/*/*.pm perl/Git/*/*/*.pm)
+LIB_PERL_GEN := $(patsubst perl/%.pm,perl/build/lib/%.pm,$(LIB_PERL))
+LIB_CPAN := $(wildcard perl/FromCPAN/*.pm perl/FromCPAN/*/*.pm)
+LIB_CPAN_GEN := $(patsubst perl/%.pm,perl/build/lib/%.pm,$(LIB_CPAN))
+
+ifndef NO_PERL
+all:: $(LIB_PERL_GEN)
+ifndef NO_PERL_CPAN_FALLBACKS
+all:: $(LIB_CPAN_GEN)
+endif
+NO_PERL_CPAN_FALLBACKS_SQ = $(subst ','\'',$(NO_PERL_CPAN_FALLBACKS))
+endif
+
+perl/build/lib/%.pm: perl/%.pm generate-perl.sh GIT-BUILD-OPTIONS GIT-VERSION-FILE GIT-PERL-DEFINES
+       $(call mkdir_p_parent_template)
+       $(QUIET_GEN)$(SHELL_PATH) generate-perl.sh ./GIT-BUILD-OPTIONS ./GIT-VERSION-FILE GIT-PERL-HEADER "$<" "$@"
+
+perl/build/man/man3/Git.3pm: perl/Git.pm
+       $(call mkdir_p_parent_template)
+       $(QUIET_GEN)pod2man $< $@
+
+$(ETAGS_TARGET): $(FOUND_SOURCE_FILES)
+       $(QUIET_GEN)$(RM) $@+ && \
+       echo $(FOUND_SOURCE_FILES) | xargs etags -a -o $@+ && \
+       mv $@+ $@
+
+tags: $(FOUND_SOURCE_FILES)
+       $(QUIET_GEN)$(RM) $@+ && \
+       echo $(FOUND_SOURCE_FILES) | xargs ctags -a -o $@+ && \
+       mv $@+ $@
+
+cscope.out: $(FOUND_SOURCE_FILES)
+       $(QUIET_GEN)$(RM) $@+ && \
+       echo $(FOUND_SOURCE_FILES) | xargs cscope -f$@+ -b && \
+       mv $@+ $@
+
+.PHONY: cscope
+cscope: cscope.out
+
+### Detect prefix changes
+TRACK_PREFIX = $(bindir_SQ):$(gitexecdir_SQ):$(template_dir_SQ):$(prefix_SQ):\
+               $(localedir_SQ)
+
+GIT-PREFIX: FORCE
+       @FLAGS='$(TRACK_PREFIX)'; \
+       if test x"$$FLAGS" != x"`cat GIT-PREFIX 2>/dev/null`" ; then \
+               echo >&2 "    * new prefix flags"; \
+               echo "$$FLAGS" >GIT-PREFIX; \
+       fi
+
+TRACK_CFLAGS = $(CC):$(subst ','\'',$(ALL_CFLAGS)):$(USE_GETTEXT_SCHEME)
+
+GIT-CFLAGS: FORCE
+       @FLAGS='$(TRACK_CFLAGS)'; \
+           if test x"$$FLAGS" != x"`cat GIT-CFLAGS 2>/dev/null`" ; then \
+               echo >&2 "    * new build flags"; \
+               echo "$$FLAGS" >GIT-CFLAGS; \
+            fi
+
+TRACK_LDFLAGS = $(subst ','\'',$(ALL_LDFLAGS))
+
+GIT-LDFLAGS: FORCE
+       @FLAGS='$(TRACK_LDFLAGS)'; \
+           if test x"$$FLAGS" != x"`cat GIT-LDFLAGS 2>/dev/null`" ; then \
+               echo >&2 "    * new link flags"; \
+               echo "$$FLAGS" >GIT-LDFLAGS; \
+            fi
+
+ifdef RUNTIME_PREFIX
+RUNTIME_PREFIX_OPTION = true
+else
+RUNTIME_PREFIX_OPTION = false
+endif
+
+# We need to apply sq twice, once to protect from the shell
+# that runs GIT-BUILD-OPTIONS, and then again to protect it
+# and the first level quoting from the shell that runs "echo".
+GIT-BUILD-OPTIONS: FORCE
+       @sed \
+               -e "s!@BROKEN_PATH_FIX@!\'$(BROKEN_PATH_FIX)\'!" \
+               -e "s|@DIFF@|\'$(DIFF)\'|" \
+               -e "s|@FSMONITOR_DAEMON_BACKEND@|\'$(FSMONITOR_DAEMON_BACKEND)\'|" \
+               -e "s|@FSMONITOR_OS_SETTINGS@|\'$(FSMONITOR_OS_SETTINGS)\'|" \
+               -e "s|@GITWEBDIR@|\'$(gitwebdir_SQ)\'|" \
+               -e "s|@GIT_INTEROP_MAKE_OPTS@|\'$(GIT_INTEROP_MAKE_OPTS)\'|" \
+               -e "s|@GIT_PERF_LARGE_REPO@|\'$(GIT_PERF_LARGE_REPO)\'|" \
+               -e "s|@GIT_PERF_MAKE_COMMAND@|\'$(GIT_PERF_MAKE_COMMAND)\'|" \
+               -e "s|@GIT_PERF_MAKE_OPTS@|\'$(GIT_PERF_MAKE_OPTS)\'|" \
+               -e "s|@GIT_PERF_REPEAT_COUNT@|\'$(GIT_PERF_REPEAT_COUNT)\'|" \
+               -e "s|@GIT_PERF_REPO@|\'$(GIT_PERF_REPO)\'|" \
+               -e "s|@GIT_SOURCE_DIR@|\'$(shell pwd)\'|" \
+               -e "s|@GIT_TEST_CMP@|\'$(GIT_TEST_CMP)\'|" \
+               -e "s|@GIT_TEST_CMP_USE_COPIED_CONTEXT@|\'$(GIT_TEST_CMP_USE_COPIED_CONTEXT)\'|" \
+               -e "s|@GIT_TEST_GITPERLLIB@|\'$(shell pwd)/perl/build/lib\'|" \
+               -e "s|@GIT_TEST_INDEX_VERSION@|\'$(GIT_TEST_INDEX_VERSION)\'|" \
+               -e "s|@GIT_TEST_OPTS@|\'$(GIT_TEST_OPTS)\'|" \
+               -e "s|@GIT_TEST_PERL_FATAL_WARNINGS@|\'$(GIT_TEST_PERL_FATAL_WARNINGS)\'|" \
+               -e "s|@GIT_TEST_TEMPLATE_DIR@|\'$(shell pwd)/templates/blt\'|" \
+               -e "s|@GIT_TEST_TEXTDOMAINDIR@|\'$(shell pwd)/po/build/locale\'|" \
+               -e "s|@GIT_TEST_UTF8_LOCALE@|\'$(GIT_TEST_UTF8_LOCALE)\'|" \
+               -e "s|@LOCALEDIR@|\'$(localedir_SQ)\'|" \
+               -e "s|@NO_CURL@|\'$(NO_CURL)\'|" \
+               -e "s|@NO_EXPAT@|\'$(NO_EXPAT)\'|" \
+               -e "s|@NO_GETTEXT@|\'$(NO_GETTEXT)\'|" \
+               -e "s|@NO_GITWEB@|\'$(NO_GITWEB)\'|" \
+               -e "s|@NO_ICONV@|\'$(NO_ICONV)\'|" \
+               -e "s|@NO_PERL@|\'$(NO_PERL)\'|" \
+               -e "s|@NO_PERL_CPAN_FALLBACKS@|\'$(NO_PERL_CPAN_FALLBACKS_SQ)\'|" \
+               -e "s|@NO_PTHREADS@|\'$(NO_PTHREADS)\'|" \
+               -e "s|@NO_PYTHON@|\'$(NO_PYTHON)\'|" \
+               -e "s|@NO_REGEX@|\'$(NO_REGEX)\'|" \
+               -e "s|@NO_UNIX_SOCKETS@|\'$(NO_UNIX_SOCKETS)\'|" \
+               -e "s|@PAGER_ENV@|\'$(PAGER_ENV)\'|" \
+               -e "s|@PERL_LOCALEDIR@|\'$(perl_localedir_SQ)\'|" \
+               -e "s|@PERL_PATH@|\'$(PERL_PATH_SQ)\'|" \
+               -e "s|@PYTHON_PATH@|\'$(PYTHON_PATH_SQ)\'|" \
+               -e "s|@RUNTIME_PREFIX@|\'$(RUNTIME_PREFIX_OPTION)\'|" \
+               -e "s|@SANITIZE_ADDRESS@|\'$(SANITIZE_ADDRESS)\'|" \
+               -e "s|@SANITIZE_LEAK@|\'$(SANITIZE_LEAK)\'|" \
+               -e "s|@SHELL_PATH@|\'$(SHELL_PATH_SQ)\'|" \
+               -e "s|@TAR@|\'$(TAR)\'|" \
+               -e "s|@TEST_OUTPUT_DIRECTORY@|\'$(TEST_OUTPUT_DIRECTORY)\'|" \
+               -e "s|@TEST_SHELL_PATH@|\'$(TEST_SHELL_PATH_SQ)\'|" \
+               -e "s|@USE_GETTEXT_SCHEME@|\'$(USE_GETTEXT_SCHEME)\'|" \
+               -e "s|@USE_LIBPCRE2@|\'$(USE_LIBPCRE2)\'|" \
+               -e "s|@WITH_BREAKING_CHANGES@|\'$(WITH_BREAKING_CHANGES)\'|" \
+               -e "s|@X@|\'$(X)\'|" \
+               GIT-BUILD-OPTIONS.in >$@+
+       @if grep -q '^[A-Z][A-Z_]*=@.*@$$' $@+; then echo "Unsubstituted build options in $@" >&2 && exit 1; fi
+       @if cmp $@+ $@ >/dev/null 2>&1; then $(RM) $@+; else mv $@+ $@; fi
+       @if test -f GIT-BUILD-DIR; then rm GIT-BUILD-DIR; fi
+
+### Detect Python interpreter path changes
+ifndef NO_PYTHON
+TRACK_PYTHON = $(subst ','\'',-DPYTHON_PATH='$(PYTHON_PATH_SQ)')
+
+GIT-PYTHON-VARS: FORCE
+       @VARS='$(TRACK_PYTHON)'; \
+           if test x"$$VARS" != x"`cat $@ 2>/dev/null`" ; then \
+               echo >&2 "    * new Python interpreter location"; \
+               echo "$$VARS" >$@; \
+            fi
+endif
+
+test_bindir_programs := $(patsubst %,bin-wrappers/%,$(BINDIR_PROGRAMS_NEED_X) $(BINDIR_PROGRAMS_NO_X) $(TEST_PROGRAMS_NEED_X))
+
+all:: $(TEST_PROGRAMS) $(test_bindir_programs) $(UNIT_TEST_PROGS) $(CLAR_TEST_PROG)
+
+$(test_bindir_programs): bin-wrappers/%: bin-wrappers/wrap-for-bin.sh
+       $(QUIET_GEN)sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+            -e 's|@BUILD_DIR@|$(shell pwd)|' \
+            -e 's|@GIT_TEXTDOMAINDIR@|$(shell pwd)/po/build/locale|' \
+            -e 's|@GITPERLLIB@|$(shell pwd)/perl/build/lib|' \
+            -e 's|@MERGE_TOOLS_DIR@|$(shell pwd)/mergetools|' \
+            -e 's|@TEMPLATE_DIR@|$(shell pwd)/templates/blt|' \
+            -e 's|@PROG@|$(shell pwd)/$(patsubst test-%,t/helper/test-%,$(@F))$(if $(filter-out $(BINDIR_PROGRAMS_NO_X),$(@F)),$(X),)|' < $< > $@ && \
+       chmod +x $@
+
+# GNU make supports exporting all variables by "export" without parameters.
+# However, the environment gets quite big, and some programs have problems
+# with that.
+
+export NO_SVN_TESTS
+export TEST_NO_MALLOC_CHECK
+
+### Testing rules
+
+test: all
+       $(MAKE) -C t/ all
+
+perf: all
+       $(MAKE) -C t/perf/ all
+
+.PHONY: test perf
+
+.PRECIOUS: $(TEST_OBJS)
+
+t/helper/test-tool$X: $(patsubst %,t/helper/%,$(TEST_BUILTINS_OBJS)) $(UNIT_TEST_DIR)/test-lib.o
+
+t/helper/test-%$X: t/helper/test-%.o GIT-LDFLAGS $(GITLIBS)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(filter %.a,$^) $(LIBS)
+
+check-sha1:: t/helper/test-tool$X
+       t/helper/test-sha1.sh
+
+SP_SRC = $(filter-out $(THIRD_PARTY_SOURCES),$(patsubst %.o,%.c,$(OBJECTS)))
+SP_OBJ = $(patsubst %.c,%.sp,$(SP_SRC))
+
+$(SP_OBJ): %.sp: %.c %.o $(GENERATED_H)
+       $(QUIET_SP)cgcc -no-compile $(ALL_CFLAGS) $(EXTRA_CPPFLAGS) \
+               -Wsparse-error \
+               $(SPARSE_FLAGS) $(SP_EXTRA_FLAGS) $< && \
+       >$@
+
+.PHONY: sparse
+sparse: $(SP_OBJ)
+
+EXCEPT_HDRS := $(GENERATED_H) unicode-width.h compat/% xdiff/% $(UNIT_TEST_DIR)/clar/% $(UNIT_TEST_DIR)/clar/clar/%
+ifndef OPENSSL_SHA1
+       EXCEPT_HDRS += sha1/openssl.h
+endif
+ifndef OPENSSL_SHA256
+       EXCEPT_HDRS += sha256/openssl.h
+endif
+ifndef NETTLE_SHA256
+       EXCEPT_HDRS += sha256/nettle.h
+endif
+ifndef GCRYPT_SHA256
+       EXCEPT_HDRS += sha256/gcrypt.h
+endif
+CHK_HDRS = $(filter-out $(EXCEPT_HDRS),$(LIB_H))
+HCO = $(patsubst %.h,%.hco,$(CHK_HDRS))
+HCC = $(HCO:hco=hcc)
+
+%.hcc: %.h
+       @echo '#include "git-compat-util.h"' >$@
+       @echo '#include "$<"' >>$@
+
+$(HCO): %.hco: %.hcc $(GENERATED_H) FORCE
+       $(QUIET_HDR)$(CC) $(ALL_CFLAGS) -o /dev/null -c -xc $<
+
+# TODO: deprecate 'hdr-check' in lieu of 'check-headers' in Git 2.51+
+.PHONY: hdr-check check-headers $(HCO)
+hdr-check: $(HCO)
+check-headers: hdr-check
+
+.PHONY: style
+style:
+       git clang-format --style file --diff --extensions c,h
+
+.PHONY: check
+check:
+       @if sparse; \
+       then \
+               echo >&2 "Use 'make sparse' instead"; \
+               $(MAKE) --no-print-directory sparse; \
+       else \
+               echo >&2 "Did you mean 'make test'?"; \
+               exit 1; \
+       fi
+
+COCCI_GEN_ALL = .build/contrib/coccinelle/ALL.cocci
+COCCI_GLOB = $(wildcard contrib/coccinelle/*.cocci)
+COCCI_RULES_TRACKED = $(COCCI_GLOB:%=.build/%)
+COCCI_RULES_TRACKED_NO_PENDING = $(filter-out %.pending.cocci,$(COCCI_RULES_TRACKED))
+COCCI_RULES =
+COCCI_RULES += $(COCCI_GEN_ALL)
+COCCI_RULES += $(COCCI_RULES_TRACKED)
+COCCI_NAMES =
+COCCI_NAMES += $(COCCI_RULES:.build/contrib/coccinelle/%.cocci=%)
+
+COCCICHECK_PENDING = $(filter %.pending.cocci,$(COCCI_RULES))
+COCCICHECK = $(filter-out $(COCCICHECK_PENDING),$(COCCI_RULES))
+
+COCCICHECK_PATCHES = $(COCCICHECK:%=%.patch)
+COCCICHECK_PATCHES_PENDING = $(COCCICHECK_PENDING:%=%.patch)
+
+COCCICHECK_PATCHES_INTREE = $(COCCICHECK_PATCHES:.build/%=%)
+COCCICHECK_PATCHES_PENDING_INTREE = $(COCCICHECK_PATCHES_PENDING:.build/%=%)
+
+# It's expensive to compute the many=many rules below, only eval them
+# on $(MAKECMDGOALS) that match these $(COCCI_RULES)
+COCCI_RULES_GLOB =
+COCCI_RULES_GLOB += cocci%
+COCCI_RULES_GLOB += .build/contrib/coccinelle/%
+COCCI_RULES_GLOB += $(COCCICHECK_PATCHES)
+COCCI_RULES_GLOB += $(COCCICHEC_PATCHES_PENDING)
+COCCI_RULES_GLOB += $(COCCICHECK_PATCHES_INTREE)
+COCCI_RULES_GLOB += $(COCCICHECK_PATCHES_PENDING_INTREE)
+COCCI_GOALS = $(filter $(COCCI_RULES_GLOB),$(MAKECMDGOALS))
+
+COCCI_TEST_RES = $(wildcard contrib/coccinelle/tests/*.res)
+
+$(COCCI_RULES_TRACKED): .build/% : %
+       $(call mkdir_p_parent_template)
+       $(QUIET_CP)cp $< $@
+
+.build/contrib/coccinelle/FOUND_H_SOURCES: $(FOUND_H_SOURCES)
+       $(call mkdir_p_parent_template)
+       $(QUIET_GEN) >$@
+
+$(COCCI_GEN_ALL): $(COCCI_RULES_TRACKED_NO_PENDING)
+       $(call mkdir_p_parent_template)
+       $(QUIET_SPATCH_CAT)cat $^ >$@
+
+ifeq ($(COMPUTE_HEADER_DEPENDENCIES),no)
+SPATCH_USE_O_DEPENDENCIES =
+endif
+define cocci-rule
+
+## Rule for .build/$(1).patch/$(2); Params:
+# $(1) = e.g. ".build/contrib/coccinelle/free.cocci"
+# $(2) = e.g. "grep.c"
+# $(3) = e.g. "grep.o"
+COCCI_$(1:.build/contrib/coccinelle/%.cocci=%) += $(1).d/$(2).patch
+$(1).d/$(2).patch: GIT-SPATCH-DEFINES
+$(1).d/$(2).patch: $(if $(and $(SPATCH_USE_O_DEPENDENCIES),$(wildcard $(3))),$(3),.build/contrib/coccinelle/FOUND_H_SOURCES)
+$(1).d/$(2).patch: $(1)
+$(1).d/$(2).patch: $(1).d/%.patch : %
+       $$(call mkdir_p_parent_template)
+       $$(QUIET_SPATCH)if ! $$(SPATCH) $$(SPATCH_FLAGS) \
+               $$(SPATCH_INCLUDE_FLAGS) \
+               --sp-file $(1) --patch . $$< \
+               >$$@ 2>$$@.log; \
+       then \
+               echo "ERROR when applying '$(1)' to '$$<'; '$$@.log' follows:"; \
+               cat $$@.log; \
+               exit 1; \
+       fi
+endef
+
+define cocci-matrix
+
+$(foreach s,$(COCCI_SOURCES),$(call cocci-rule,$(c),$(s),$(s:%.c=%.o)))
+endef
+
+ifdef COCCI_GOALS
+$(eval $(foreach c,$(COCCI_RULES),$(call cocci-matrix,$(c))))
+endif
+
+define spatch-rule
+
+.build/contrib/coccinelle/$(1).cocci.patch: $$(COCCI_$(1))
+       $$(QUIET_SPATCH_CAT)cat $$^ >$$@ && \
+       if test -s $$@; \
+       then \
+               echo '    ' SPATCH result: $$@; \
+       fi
+contrib/coccinelle/$(1).cocci.patch: .build/contrib/coccinelle/$(1).cocci.patch
+       $$(QUIET_CP)cp $$< $$@
+
+endef
+
+ifdef COCCI_GOALS
+$(eval $(foreach n,$(COCCI_NAMES),$(call spatch-rule,$(n))))
+endif
+
+COCCI_TEST_RES_GEN = $(addprefix .build/,$(COCCI_TEST_RES))
+$(COCCI_TEST_RES_GEN): GIT-SPATCH-DEFINES
+$(COCCI_TEST_RES_GEN): .build/%.res : %.c
+$(COCCI_TEST_RES_GEN): .build/%.res : %.res
+ifdef SPATCH_CONCAT_COCCI
+$(COCCI_TEST_RES_GEN): .build/contrib/coccinelle/tests/%.res : $(COCCI_GEN_ALL)
+else
+$(COCCI_TEST_RES_GEN): .build/contrib/coccinelle/tests/%.res : contrib/coccinelle/%.cocci
+endif
+       $(call mkdir_p_parent_template)
+       $(QUIET_SPATCH_TEST)$(SPATCH) $(SPATCH_TEST_FLAGS) \
+               --very-quiet --no-show-diff \
+               --sp-file $< -o $@ \
+               $(@:.build/%.res=%.c) && \
+       cmp $(@:.build/%=%) $@ || \
+       git -P diff --no-index $(@:.build/%=%) $@ 2>/dev/null; \
+
+.PHONY: coccicheck-test
+coccicheck-test: $(COCCI_TEST_RES_GEN)
+
+coccicheck: coccicheck-test
+
+ifdef SPATCH_CONCAT_COCCI
+COCCICHECK_PATCH_MUST_BE_EMPTY_FILES = contrib/coccinelle/ALL.cocci.patch
+else
+COCCICHECK_PATCH_MUST_BE_EMPTY_FILES = $(COCCICHECK_PATCHES_INTREE)
+endif
+coccicheck: $(COCCICHECK_PATCH_MUST_BE_EMPTY_FILES)
+       ! grep -q ^ $(COCCICHECK_PATCH_MUST_BE_EMPTY_FILES) /dev/null
+
+# See contrib/coccinelle/README
+coccicheck-pending: coccicheck-test
+coccicheck-pending: $(COCCICHECK_PATCHES_PENDING_INTREE)
+
+.PHONY: coccicheck coccicheck-pending
+
+# "Sub"-Makefiles, not really because they can't be run stand-alone,
+# only there to contain directory-specific rules and variables
+## gitweb/Makefile inclusion:
+MAK_DIR_GITWEB = gitweb/
+include gitweb/Makefile
+
+.PHONY: gitweb
+gitweb: $(MAK_DIR_GITWEB_ALL)
+ifndef NO_GITWEB
+all:: gitweb
+endif
+
+### Installation rules
+
+ifneq ($(filter /%,$(firstword $(template_dir))),)
+template_instdir = $(template_dir)
+else
+template_instdir = $(prefix)/$(template_dir)
+endif
+export template_instdir
+
+ifneq ($(filter /%,$(firstword $(gitexecdir))),)
+gitexec_instdir = $(gitexecdir)
+else
+gitexec_instdir = $(prefix)/$(gitexecdir)
+endif
+gitexec_instdir_SQ = $(subst ','\'',$(gitexec_instdir))
+export gitexec_instdir
+
+ifneq ($(filter /%,$(firstword $(mergetoolsdir))),)
+mergetools_instdir = $(mergetoolsdir)
+else
+mergetools_instdir = $(prefix)/$(mergetoolsdir)
+endif
+mergetools_instdir_SQ = $(subst ','\'',$(mergetools_instdir))
+
+install_bindir_xprograms := $(patsubst %,%$X,$(BINDIR_PROGRAMS_NEED_X))
+install_bindir_programs := $(install_bindir_xprograms) $(BINDIR_PROGRAMS_NO_X)
+
+.PHONY: profile-install profile-fast-install
+profile-install: profile
+       $(MAKE) install
+
+profile-fast-install: profile-fast
+       $(MAKE) install
+
+INSTALL_STRIP =
+
+install: all
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(bindir_SQ)'
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+       $(INSTALL) $(INSTALL_STRIP) $(PROGRAMS) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+       $(INSTALL) $(SCRIPTS) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+       $(INSTALL) -m 644 $(SCRIPT_LIB) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+       $(INSTALL) $(INSTALL_STRIP) $(install_bindir_xprograms) '$(DESTDIR_SQ)$(bindir_SQ)'
+       $(INSTALL) $(BINDIR_PROGRAMS_NO_X) '$(DESTDIR_SQ)$(bindir_SQ)'
+
+ifdef MSVC
+       # We DO NOT install the individual foo.o.pdb files because they
+       # have already been rolled up into the exe's pdb file.
+       # We DO NOT have pdb files for the builtin commands (like git-status.exe)
+       # because it is just a copy/hardlink of git.exe, rather than a unique binary.
+       $(INSTALL) $(patsubst %.exe,%.pdb,$(filter-out $(BUILT_INS),$(patsubst %,%$X,$(BINDIR_PROGRAMS_NEED_X)))) '$(DESTDIR_SQ)$(bindir_SQ)'
+       $(INSTALL) $(patsubst %.exe,%.pdb,$(filter-out $(BUILT_INS) $(REMOTE_CURL_ALIASES),$(PROGRAMS))) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
+ifndef DEBUG
+       $(INSTALL) $(vcpkg_rel_bin)/*.dll '$(DESTDIR_SQ)$(bindir_SQ)'
+       $(INSTALL) $(vcpkg_rel_bin)/*.pdb '$(DESTDIR_SQ)$(bindir_SQ)'
+else
+       $(INSTALL) $(vcpkg_dbg_bin)/*.dll '$(DESTDIR_SQ)$(bindir_SQ)'
+       $(INSTALL) $(vcpkg_dbg_bin)/*.pdb '$(DESTDIR_SQ)$(bindir_SQ)'
+endif
+endif
+       $(MAKE) -C templates DESTDIR='$(DESTDIR_SQ)' install
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(mergetools_instdir_SQ)'
+       $(INSTALL) -m 644 mergetools/* '$(DESTDIR_SQ)$(mergetools_instdir_SQ)'
+ifndef NO_GETTEXT
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(localedir_SQ)'
+       (cd po/build/locale && $(TAR) cf - .) | \
+       (cd '$(DESTDIR_SQ)$(localedir_SQ)' && umask 022 && $(TAR) xof -)
+endif
+ifndef NO_PERL
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perllibdir_SQ)'
+       (cd perl/build/lib && $(TAR) cf - .) | \
+       (cd '$(DESTDIR_SQ)$(perllibdir_SQ)' && umask 022 && $(TAR) xof -)
+endif
+ifndef NO_TCLTK
+       $(MAKE) -C gitk-git install
+       $(MAKE) -C git-gui gitexecdir='$(gitexec_instdir_SQ)' install
+endif
+ifneq (,$X)
+       $(foreach p,$(patsubst %$X,%,$(filter %$X,$(ALL_COMMANDS_TO_INSTALL) $(OTHER_PROGRAMS))), test '$(DESTDIR_SQ)$(gitexec_instdir_SQ)/$p' -ef '$(DESTDIR_SQ)$(gitexec_instdir_SQ)/$p$X' || $(RM) '$(DESTDIR_SQ)$(gitexec_instdir_SQ)/$p';)
+endif
+ifndef NO_BASH_COMPLETION
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(bash_completion_dir_SQ)' && \
+       $(INSTALL) -m 644 contrib/completion/git-completion.bash '$(DESTDIR_SQ)$(bash_completion_dir_SQ)/git'
+endif
+
+       bindir=$$(cd '$(DESTDIR_SQ)$(bindir_SQ)' && pwd) && \
+       execdir=$$(cd '$(DESTDIR_SQ)$(gitexec_instdir_SQ)' && pwd) && \
+       destdir_from_execdir_SQ=$$(echo '$(gitexecdir_relative_SQ)' | sed -e 's|[^/][^/]*|..|g') && \
+       { test "$$bindir/" = "$$execdir/" || \
+         for p in $(OTHER_PROGRAMS) $(filter $(install_bindir_programs),$(ALL_PROGRAMS)); do \
+               $(RM) "$$execdir/$$p" && \
+               test -n "$(INSTALL_SYMLINKS)" && \
+               ln -s "$$destdir_from_execdir_SQ/$(bindir_relative_SQ)/$$p" "$$execdir/$$p" || \
+               { test -z "$(NO_INSTALL_HARDLINKS)$(NO_CROSS_DIRECTORY_HARDLINKS)" && \
+                 ln "$$bindir/$$p" "$$execdir/$$p" 2>/dev/null || \
+                 cp "$$bindir/$$p" "$$execdir/$$p" || exit; } \
+         done; \
+       } && \
+       for p in $(filter $(install_bindir_programs),$(BUILT_INS)); do \
+               $(RM) "$$bindir/$$p" && \
+               test -n "$(INSTALL_SYMLINKS)" && \
+               ln -s "git$X" "$$bindir/$$p" || \
+               { test -z "$(NO_INSTALL_HARDLINKS)" && \
+                 ln "$$bindir/git$X" "$$bindir/$$p" 2>/dev/null || \
+                 ln -s "git$X" "$$bindir/$$p" 2>/dev/null || \
+                 cp "$$bindir/git$X" "$$bindir/$$p" || exit; }; \
+       done && \
+       for p in $(BUILT_INS); do \
+               $(RM) "$$execdir/$$p" && \
+               if test -z "$(SKIP_DASHED_BUILT_INS)"; \
+               then \
+                       test -n "$(INSTALL_SYMLINKS)" && \
+                       ln -s "$$destdir_from_execdir_SQ/$(bindir_relative_SQ)/git$X" "$$execdir/$$p" || \
+                       { test -z "$(NO_INSTALL_HARDLINKS)" && \
+                         ln "$$execdir/git$X" "$$execdir/$$p" 2>/dev/null || \
+                         ln -s "git$X" "$$execdir/$$p" 2>/dev/null || \
+                         cp "$$execdir/git$X" "$$execdir/$$p" || exit; }; \
+               fi \
+       done && \
+       remote_curl_aliases="$(REMOTE_CURL_ALIASES)" && \
+       for p in $$remote_curl_aliases; do \
+               $(RM) "$$execdir/$$p" && \
+               test -n "$(INSTALL_SYMLINKS)" && \
+               ln -s "git-remote-http$X" "$$execdir/$$p" || \
+               { test -z "$(NO_INSTALL_HARDLINKS)" && \
+                 ln "$$execdir/git-remote-http$X" "$$execdir/$$p" 2>/dev/null || \
+                 ln -s "git-remote-http$X" "$$execdir/$$p" 2>/dev/null || \
+                 cp "$$execdir/git-remote-http$X" "$$execdir/$$p" || exit; } \
+       done
+
+.PHONY: install-doc install-man install-man-perl install-html install-info install-pdf
+.PHONY: quick-install-doc quick-install-man quick-install-html
+
+install-doc: install-man-perl
+       $(MAKE) -C Documentation install
+
+install-man: install-man-perl
+       $(MAKE) -C Documentation install-man
+
+install-man-perl: man-perl
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(mandir_SQ)/man3'
+       (cd perl/build/man/man3 && $(TAR) cf - .) | \
+       (cd '$(DESTDIR_SQ)$(mandir_SQ)/man3' && umask 022 && $(TAR) xof -)
+
+install-html:
+       $(MAKE) -C Documentation install-html
+
+install-info:
+       $(MAKE) -C Documentation install-info
+
+install-pdf:
+       $(MAKE) -C Documentation install-pdf
+
+quick-install-doc:
+       $(MAKE) -C Documentation quick-install
+
+quick-install-man:
+       $(MAKE) -C Documentation quick-install-man
+
+quick-install-html:
+       $(MAKE) -C Documentation quick-install-html
+
+
+
+### Maintainer's dist rules
+
+GIT_TARNAME = git-$(GIT_VERSION)
+GIT_ARCHIVE_EXTRA_FILES = \
+       --prefix=$(GIT_TARNAME)/ \
+       --add-file=configure \
+       --add-file=.dist-tmp-dir/version \
+       --prefix=$(GIT_TARNAME)/git-gui/ \
+       --add-file=.dist-tmp-dir/git-gui/version
+ifdef DC_SHA1_SUBMODULE
+GIT_ARCHIVE_EXTRA_FILES += \
+       --prefix=$(GIT_TARNAME)/sha1collisiondetection/ \
+       --add-file=sha1collisiondetection/LICENSE.txt \
+       --prefix=$(GIT_TARNAME)/sha1collisiondetection/lib/ \
+       --add-file=sha1collisiondetection/lib/sha1.c \
+       --add-file=sha1collisiondetection/lib/sha1.h \
+       --add-file=sha1collisiondetection/lib/ubc_check.c \
+       --add-file=sha1collisiondetection/lib/ubc_check.h
+endif
+dist: git-archive$(X) configure
+       @$(RM) -r .dist-tmp-dir
+       @mkdir .dist-tmp-dir
+       @echo $(GIT_VERSION) > .dist-tmp-dir/version
+       @$(MAKE) -C git-gui TARDIR=../.dist-tmp-dir/git-gui dist-version
+       ./git-archive --format=tar \
+               $(GIT_ARCHIVE_EXTRA_FILES) \
+               --prefix=$(GIT_TARNAME)/ HEAD^{tree} > $(GIT_TARNAME).tar
+       @$(RM) -r .dist-tmp-dir
+       gzip -f -9 $(GIT_TARNAME).tar
+
+rpm::
+       @echo >&2 "Use distro packaged sources to run rpmbuild"
+       @false
+.PHONY: rpm
+
+ifneq ($(INCLUDE_DLLS_IN_ARTIFACTS),)
+OTHER_PROGRAMS += $(shell echo *.dll t/helper/*.dll t/unit-tests/bin/*.dll)
+endif
+
+artifacts-tar:: $(ALL_COMMANDS_TO_INSTALL) $(SCRIPT_LIB) $(OTHER_PROGRAMS) \
+               GIT-BUILD-OPTIONS $(TEST_PROGRAMS) $(test_bindir_programs) \
+               $(UNIT_TEST_PROGS) $(CLAR_TEST_PROG) $(MOFILES)
+       $(QUIET_SUBDIR0)templates $(QUIET_SUBDIR1) \
+               SHELL_PATH='$(SHELL_PATH_SQ)' PERL_PATH='$(PERL_PATH_SQ)'
+       test -n "$(ARTIFACTS_DIRECTORY)"
+       mkdir -p "$(ARTIFACTS_DIRECTORY)"
+       $(TAR) czf "$(ARTIFACTS_DIRECTORY)/artifacts.tar.gz" $^ templates/blt/
+.PHONY: artifacts-tar
+
+htmldocs = git-htmldocs-$(GIT_VERSION)
+manpages = git-manpages-$(GIT_VERSION)
+.PHONY: dist-doc distclean
+dist-doc: git$X
+       $(RM) -r .doc-tmp-dir
+       mkdir .doc-tmp-dir
+       $(MAKE) -C Documentation WEBDOC_DEST=../.doc-tmp-dir install-webdoc
+       ./git -C .doc-tmp-dir init
+       ./git -C .doc-tmp-dir add .
+       ./git -C .doc-tmp-dir commit -m htmldocs
+       ./git -C .doc-tmp-dir archive --format=tar --prefix=./ HEAD^{tree} \
+               > $(htmldocs).tar
+       gzip -n -9 -f $(htmldocs).tar
+       :
+       $(RM) -r .doc-tmp-dir
+       mkdir -p .doc-tmp-dir/man1 .doc-tmp-dir/man5 .doc-tmp-dir/man7
+       $(MAKE) -C Documentation DESTDIR=./ \
+               man1dir=../.doc-tmp-dir/man1 \
+               man5dir=../.doc-tmp-dir/man5 \
+               man7dir=../.doc-tmp-dir/man7 \
+               install
+       ./git -C .doc-tmp-dir init
+       ./git -C .doc-tmp-dir add .
+       ./git -C .doc-tmp-dir commit -m manpages
+       ./git -C .doc-tmp-dir archive --format=tar --prefix=./ HEAD^{tree} \
+               > $(manpages).tar
+       gzip -n -9 -f $(manpages).tar
+       $(RM) -r .doc-tmp-dir
+
+### Cleaning rules
+
+distclean: clean
+       $(RM) configure
+       $(RM) config.log config.status config.cache
+       $(RM) config.mak.autogen config.mak.append
+       $(RM) -r autom4te.cache
+
+profile-clean:
+       $(RM) $(addsuffix *.gcda,$(addprefix $(PROFILE_DIR)/, $(object_dirs)))
+       $(RM) $(addsuffix *.gcno,$(addprefix $(PROFILE_DIR)/, $(object_dirs)))
+
+cocciclean:
+       $(RM) GIT-SPATCH-DEFINES
+       $(RM) -r .build/contrib/coccinelle
+       $(RM) contrib/coccinelle/*.cocci.patch
+
+clean: profile-clean coverage-clean cocciclean
+       $(RM) -r .build $(UNIT_TEST_BIN)
+       $(RM) GIT-TEST-SUITES
+       $(RM) po/git.pot po/git-core.pot
+       $(RM) git.rc git.res
+       $(RM) $(OBJECTS)
+       $(RM) headless-git.o
+       $(RM) $(LIB_FILE)
+       $(RM) $(ALL_PROGRAMS) $(SCRIPT_LIB) $(BUILT_INS) $(OTHER_PROGRAMS)
+       $(RM) $(TEST_PROGRAMS)
+       $(RM) $(FUZZ_PROGRAMS)
+       $(RM) $(SP_OBJ)
+       $(RM) $(HCC)
+       $(RM) -r Cargo.lock target/
+       $(RM) version-def.h
+       $(RM) -r $(dep_dirs) $(compdb_dir) compile_commands.json
+       $(RM) $(test_bindir_programs)
+       $(RM) -r po/build/
+       $(RM) *.pyc *.pyo */*.pyc */*.pyo $(GENERATED_H) $(ETAGS_TARGET) tags cscope*
+       $(RM) -r .dist-tmp-dir .doc-tmp-dir
+       $(RM) $(GIT_TARNAME).tar.gz
+       $(RM) $(htmldocs).tar.gz $(manpages).tar.gz
+       $(MAKE) -C Documentation/ clean
+       $(RM) Documentation/GIT-EXCLUDED-PROGRAMS
+       $(RM) -r contrib/libgit-sys/target contrib/libgit-rs/target
+       $(RM) contrib/libgit-sys/partial_symbol_export.o
+       $(RM) contrib/libgit-sys/hidden_symbol_export.o
+       $(RM) contrib/libgit-sys/libgitpub.a
+ifndef NO_PERL
+       $(RM) -r perl/build/
+endif
+       $(MAKE) -C templates/ clean
+       $(MAKE) -C t/ clean
+ifndef NO_TCLTK
+       $(MAKE) -C gitk-git clean
+       $(MAKE) -C git-gui clean
+endif
+       $(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-BUILD-OPTIONS
+       $(RM) GIT-USER-AGENT GIT-PREFIX
+       $(RM) GIT-SCRIPT-DEFINES GIT-PERL-DEFINES GIT-PERL-HEADER GIT-PYTHON-VARS
+ifdef MSVC
+       $(RM) $(patsubst %.o,%.o.pdb,$(OBJECTS))
+       $(RM) headless-git.o.pdb
+       $(RM) $(patsubst %.exe,%.pdb,$(OTHER_PROGRAMS))
+       $(RM) $(patsubst %.exe,%.iobj,$(OTHER_PROGRAMS))
+       $(RM) $(patsubst %.exe,%.ipdb,$(OTHER_PROGRAMS))
+       $(RM) $(patsubst %.exe,%.pdb,$(PROGRAMS))
+       $(RM) $(patsubst %.exe,%.iobj,$(PROGRAMS))
+       $(RM) $(patsubst %.exe,%.ipdb,$(PROGRAMS))
+       $(RM) $(patsubst %.exe,%.pdb,$(TEST_PROGRAMS))
+       $(RM) $(patsubst %.exe,%.iobj,$(TEST_PROGRAMS))
+       $(RM) $(patsubst %.exe,%.ipdb,$(TEST_PROGRAMS))
+       $(RM) compat/vcbuild/MSVC-DEFS-GEN
+endif
+
+.PHONY: all install profile-clean cocciclean clean strip
+.PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell
+.PHONY: FORCE
+
+### Check documentation
+#
+ALL_COMMANDS = $(ALL_COMMANDS_TO_INSTALL) $(SCRIPT_LIB)
+ALL_COMMANDS += git
+ALL_COMMANDS += git-citool
+ALL_COMMANDS += git-gui
+ALL_COMMANDS += gitk
+ALL_COMMANDS += gitweb
+ALL_COMMANDS += scalar
+
+.PHONY: check-docs
+check-docs::
+       $(MAKE) -C Documentation lint-docs
+
+### Make sure built-ins do not have dups and listed in git.c
+#
+check-builtins::
+       ./check-builtins.sh
+
+### Test suite coverage testing
+#
+.PHONY: coverage coverage-clean coverage-compile coverage-test coverage-report
+.PHONY: coverage-untested-functions cover_db cover_db_html
+.PHONY: coverage-clean-results
+
+coverage:
+       $(MAKE) coverage-test
+       $(MAKE) coverage-untested-functions
+
+object_dirs := $(sort $(dir $(OBJECTS)))
+coverage-clean-results:
+       $(RM) $(addsuffix *.gcov,$(object_dirs))
+       $(RM) $(addsuffix *.gcda,$(object_dirs))
+       $(RM) coverage-untested-functions
+       $(RM) -r cover_db/
+       $(RM) -r cover_db_html/
+       $(RM) coverage-test.made
+
+coverage-clean: coverage-clean-results
+       $(RM) $(addsuffix *.gcno,$(object_dirs))
+
+COVERAGE_CFLAGS = $(CFLAGS) -O0 -ftest-coverage -fprofile-arcs
+COVERAGE_LDFLAGS = $(CFLAGS)  -O0 -lgcov
+GCOVFLAGS = --preserve-paths --branch-probabilities --all-blocks
+
+coverage-compile:
+       $(MAKE) CFLAGS="$(COVERAGE_CFLAGS)" LDFLAGS="$(COVERAGE_LDFLAGS)" all
+
+coverage-test: coverage-clean-results coverage-compile
+       $(MAKE) CFLAGS="$(COVERAGE_CFLAGS)" LDFLAGS="$(COVERAGE_LDFLAGS)" \
+               DEFAULT_TEST_TARGET=test -j1 test
+       touch coverage-test.made
+
+coverage-test.made:
+       $(MAKE) coverage-test
+
+coverage-prove: coverage-clean-results coverage-compile
+       $(MAKE) CFLAGS="$(COVERAGE_CFLAGS)" LDFLAGS="$(COVERAGE_LDFLAGS)" \
+               DEFAULT_TEST_TARGET=prove GIT_PROVE_OPTS="$(GIT_PROVE_OPTS) -j1" \
+               -j1 test
+
+coverage-report: coverage-test.made
+       $(QUIET_GCOV)for dir in $(object_dirs); do \
+               $(GCOV) $(GCOVFLAGS) --object-directory=$$dir $$dir*.c || exit; \
+       done
+
+coverage-untested-functions: coverage-report
+       grep '^function.*called 0 ' *.c.gcov \
+               | sed -e 's/\([^:]*\)\.gcov: *function \([^ ]*\) called.*/\1: \2/' \
+               > coverage-untested-functions
+
+cover_db: coverage-report
+       gcov2perl -db cover_db *.gcov
+
+cover_db_html: cover_db
+       cover -report html -outputdir cover_db_html cover_db
+
+
+### Fuzz testing
+#
+# Building fuzz targets generally requires a special set of compiler flags that
+# are not necessarily appropriate for general builds, and that vary greatly
+# depending on the compiler version used.
+#
+# An example command to build against libFuzzer from LLVM 11.0.0:
+#
+# make CC=clang FUZZ_CXX=clang++ \
+#      CFLAGS="-fsanitize=fuzzer-no-link,address" \
+#      LIB_FUZZING_ENGINE="-fsanitize=fuzzer,address" \
+#      fuzz-all
+#
+FUZZ_CXX ?= $(CC)
+FUZZ_CXXFLAGS ?= $(ALL_CFLAGS)
+
+.PHONY: fuzz-all
+fuzz-all: $(FUZZ_PROGRAMS)
+
+$(FUZZ_PROGRAMS): %: %.o oss-fuzz/dummy-cmd-main.o $(GITLIBS) GIT-LDFLAGS
+       $(QUIET_LINK)$(FUZZ_CXX) $(FUZZ_CXXFLAGS) -o $@ $(ALL_LDFLAGS) \
+               -Wl,--allow-multiple-definition \
+               $(filter %.o,$^) $(filter %.a,$^) $(LIBS) $(LIB_FUZZING_ENGINE)
+
+$(UNIT_TEST_PROGS): $(UNIT_TEST_BIN)/%$X: $(UNIT_TEST_DIR)/%.o $(UNIT_TEST_OBJS) \
+       $(GITLIBS) GIT-LDFLAGS
+       $(call mkdir_p_parent_template)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) \
+               $(filter %.o,$^) $(filter %.a,$^) $(LIBS)
+
+GIT-TEST-SUITES: FORCE
+       @FLAGS='$(CLAR_TEST_SUITES)'; \
+           if test x"$$FLAGS" != x"`cat GIT-TEST-SUITES 2>/dev/null`" ; then \
+               echo >&2 "    * new test suites"; \
+               echo "$$FLAGS" >GIT-TEST-SUITES; \
+            fi
+
+$(UNIT_TEST_DIR)/clar-decls.h: $(patsubst %,$(UNIT_TEST_DIR)/%.c,$(CLAR_TEST_SUITES)) $(UNIT_TEST_DIR)/generate-clar-decls.sh GIT-TEST-SUITES
+       $(QUIET_GEN)$(SHELL_PATH) $(UNIT_TEST_DIR)/generate-clar-decls.sh "$@" $(filter %.c,$^)
+$(UNIT_TEST_DIR)/clar.suite: $(UNIT_TEST_DIR)/clar-decls.h $(UNIT_TEST_DIR)/generate-clar-suites.sh
+       $(QUIET_GEN)$(SHELL_PATH) $(UNIT_TEST_DIR)/generate-clar-suites.sh $< $(UNIT_TEST_DIR)/clar.suite
+$(UNIT_TEST_DIR)/clar/clar.o: $(UNIT_TEST_DIR)/clar.suite
+$(CLAR_TEST_OBJS): $(UNIT_TEST_DIR)/clar-decls.h
+$(CLAR_TEST_OBJS): EXTRA_CPPFLAGS = -I$(UNIT_TEST_DIR)
+$(CLAR_TEST_PROG): $(UNIT_TEST_DIR)/clar.suite $(CLAR_TEST_OBJS) $(GITLIBS) GIT-LDFLAGS
+       $(call mkdir_p_parent_template)
+       $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)
+
+.PHONY: build-unit-tests unit-tests
+build-unit-tests: $(UNIT_TEST_PROGS) $(CLAR_TEST_PROG)
+unit-tests: $(UNIT_TEST_PROGS) $(CLAR_TEST_PROG) t/helper/test-tool$X
+       $(MAKE) -C t/ unit-tests
+
+.PHONY: libgit-sys libgit-rs
+libgit-sys:
+       $(QUIET)cargo build --manifest-path contrib/libgit-sys/Cargo.toml
+libgit-rs: libgit-sys
+       $(QUIET)cargo build --manifest-path contrib/libgit-rs/Cargo.toml
+ifdef INCLUDE_LIBGIT_RS
+all:: libgit-rs
+endif
+
+LIBGIT_PUB_OBJS += contrib/libgit-sys/public_symbol_export.o
+LIBGIT_PUB_OBJS += libgit.a
+
+LIBGIT_PARTIAL_EXPORT = contrib/libgit-sys/partial_symbol_export.o
+
+LIBGIT_HIDDEN_EXPORT = contrib/libgit-sys/hidden_symbol_export.o
+
+$(LIBGIT_PARTIAL_EXPORT): $(LIBGIT_PUB_OBJS)
+       $(LD) -r $^ -o $@
+
+$(LIBGIT_HIDDEN_EXPORT): $(LIBGIT_PARTIAL_EXPORT)
+       $(OBJCOPY) --localize-hidden $^ $@
+
+contrib/libgit-sys/libgitpub.a: $(LIBGIT_HIDDEN_EXPORT)
+       $(AR) $(ARFLAGS) $@ $^
diff --git a/config.mak.uname b/config.mak.uname
new file mode 100644 (file)
index 0000000..1691c6a
--- /dev/null
@@ -0,0 +1,794 @@
+# Platform specific Makefile tweaks based on uname detection
+
+# Define NO_SAFESEH if you need MSVC/Visual Studio to ignore the lack of
+# Microsoft's Safe Exception Handling in libraries (such as zlib).
+# Typically required for VS2013+/32-bit compilation on Vista+ versions.
+
+uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
+uname_M := $(shell sh -c 'uname -m 2>/dev/null || echo not')
+uname_O := $(shell sh -c 'uname -o 2>/dev/null || echo not')
+uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
+uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
+
+ifneq ($(findstring MINGW,$(uname_S)),)
+       uname_S := MINGW
+endif
+
+ifdef MSVC
+       # avoid the MingW and Cygwin configuration sections
+       uname_S := Windows
+       uname_O := Windows
+
+       # Generate and include makefile variables that point to the
+       # currently installed set of MSVC command line tools.
+compat/vcbuild/MSVC-DEFS-GEN: compat/vcbuild/find_vs_env.bat
+       @"$<" | tr '\\' / >"$@"
+include compat/vcbuild/MSVC-DEFS-GEN
+
+       # See if vcpkg and the vcpkg-build versions of the third-party
+       # libraries that we use are installed.  We include the result
+       # to get $(vcpkg_*) variables defined for the Makefile.
+ifeq (,$(SKIP_VCPKG))
+compat/vcbuild/VCPKG-DEFS: compat/vcbuild/vcpkg_install.bat
+       @"$<"
+include compat/vcbuild/VCPKG-DEFS
+endif
+endif
+
+# We choose to avoid "if .. else if .. else .. endif endif"
+# because maintaining the nesting to match is a pain.  If
+# we had "elif" things would have been much nicer...
+
+ifeq ($(uname_S),OSF1)
+       # Need this for u_short definitions et al
+       BASIC_CFLAGS += -D_OSF_SOURCE
+       SOCKLEN_T = int
+       NO_STRTOULL = YesPlease
+       NO_NSEC = YesPlease
+endif
+ifeq ($(uname_S),Linux)
+       HAVE_ALLOCA_H = YesPlease
+       # override in config.mak if you have glibc >= 2.38
+       NO_STRLCPY = YesPlease
+       CSPRNG_METHOD = getrandom
+       HAVE_PATHS_H = YesPlease
+       LIBC_CONTAINS_LIBINTL = YesPlease
+       HAVE_DEV_TTY = YesPlease
+       HAVE_CLOCK_GETTIME = YesPlease
+       HAVE_CLOCK_MONOTONIC = YesPlease
+       HAVE_SYNC_FILE_RANGE = YesPlease
+       HAVE_GETDELIM = YesPlease
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+       HAVE_SYSINFO = YesPlease
+       PROCFS_EXECUTABLE_PATH = /proc/self/exe
+       HAVE_PLATFORM_PROCINFO = YesPlease
+       COMPAT_OBJS += compat/linux/procinfo.o
+       # centos7/rhel7 provides gcc 4.8.5 and zlib 1.2.7.
+        ifneq ($(findstring .el7.,$(uname_R)),)
+               BASIC_CFLAGS += -std=c99
+        endif
+       LINK_FUZZ_PROGRAMS = YesPlease
+endif
+ifeq ($(uname_S),GNU/kFreeBSD)
+       HAVE_ALLOCA_H = YesPlease
+       NO_STRLCPY = YesPlease
+       HAVE_PATHS_H = YesPlease
+       DIR_HAS_BSD_GROUP_SEMANTICS = YesPlease
+       LIBC_CONTAINS_LIBINTL = YesPlease
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+endif
+ifeq ($(uname_S),UnixWare)
+       CC = cc
+       NEEDS_SOCKET = YesPlease
+       NEEDS_NSL = YesPlease
+       NEEDS_SSL_WITH_CRYPTO = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       SHELL_PATH = /usr/local/bin/bash
+       NO_IPV6 = YesPlease
+       NO_HSTRERROR = YesPlease
+       BASIC_CFLAGS += -Kthread
+       BASIC_CFLAGS += -I/usr/local/include
+       BASIC_LDFLAGS += -L/usr/local/lib
+       INSTALL = ginstall
+       TAR = gtar
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+endif
+ifeq ($(uname_S),SCO_SV)
+        ifeq ($(uname_R),3.2)
+               CFLAGS = -O2
+        endif
+        ifeq ($(uname_R),5)
+               CC = cc
+               BASIC_CFLAGS += -Kthread
+        endif
+       NEEDS_SOCKET = YesPlease
+       NEEDS_NSL = YesPlease
+       NEEDS_SSL_WITH_CRYPTO = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       SHELL_PATH = /usr/bin/bash
+       NO_IPV6 = YesPlease
+       NO_HSTRERROR = YesPlease
+       BASIC_CFLAGS += -I/usr/local/include
+       BASIC_LDFLAGS += -L/usr/local/lib
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+       INSTALL = ginstall
+       TAR = gtar
+endif
+ifeq ($(uname_S),Darwin)
+       NEEDS_CRYPTO_WITH_SSL = YesPlease
+       NEEDS_SSL_WITH_CRYPTO = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       # Note: $(uname_R) gives us the underlying Darwin version.
+       # - MacOS 10.0.* and MacOS 10.1.0 = Darwin 1.*
+       # - MacOS 10.x.* = Darwin (x+4).* for (1 <= x)
+       # i.e. "begins with [15678] and a dot" means "10.4.* or older".
+        ifeq ($(shell expr "$(uname_R)" : '[15678]\.'),2)
+               OLD_ICONV = UnfortunatelyYes
+               NO_APPLE_COMMON_CRYPTO = YesPlease
+        endif
+        ifeq ($(shell expr "$(uname_R)" : '[15]\.'),2)
+               NO_STRLCPY = YesPlease
+        endif
+        ifeq ($(shell test "`expr "$(uname_R)" : '\([0-9][0-9]*\)\.'`" -ge 11 && echo 1),1)
+               HAVE_GETDELIM = YesPlease
+        endif
+        ifeq ($(shell test "`expr "$(uname_R)" : '\([0-9][0-9]*\)\.'`" -ge 20 && echo 1),1)
+               OPEN_RETURNS_EINTR = UnfortunatelyYes
+        endif
+       NO_MEMMEM = YesPlease
+       USE_ST_TIMESPEC = YesPlease
+       HAVE_DEV_TTY = YesPlease
+       COMPAT_OBJS += compat/precompose_utf8.o
+       BASIC_CFLAGS += -DPRECOMPOSE_UNICODE
+       BASIC_CFLAGS += -DPROTECT_HFS_DEFAULT=1
+       HAVE_BSD_SYSCTL = YesPlease
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+       HAVE_NS_GET_EXECUTABLE_PATH = YesPlease
+       CSPRNG_METHOD = arc4random
+       USE_ENHANCED_BASIC_REGULAR_EXPRESSIONS = YesPlease
+
+       # Workaround for `gettext` being keg-only and not even being linked via
+       # `brew link --force gettext`, should be obsolete as of
+       # https://github.com/Homebrew/homebrew-core/pull/53489
+        ifeq ($(shell test -d /usr/local/opt/gettext/ && echo y),y)
+               BASIC_CFLAGS += -I/usr/local/include -I/usr/local/opt/gettext/include
+               BASIC_LDFLAGS += -L/usr/local/lib -L/usr/local/opt/gettext/lib
+                ifeq ($(shell test -x /usr/local/opt/gettext/bin/msgfmt && echo y),y)
+                       MSGFMT = /usr/local/opt/gettext/bin/msgfmt
+                endif
+       # On newer ARM-based machines the default installation path has changed to
+       # /opt/homebrew. Include it in our search paths so that the user does not
+       # have to configure this manually.
+       #
+       # Note that we do not employ the same workaround as above where we manually
+       # add gettext. The issue was fixed more than three years ago by now, and at
+       # that point there haven't been any ARM-based Macs yet.
+        else ifeq ($(shell test -d /opt/homebrew/ && echo y),y)
+               BASIC_CFLAGS += -I/opt/homebrew/include
+               BASIC_LDFLAGS += -L/opt/homebrew/lib
+                ifeq ($(shell test -x /opt/homebrew/bin/msgfmt && echo y),y)
+                       MSGFMT = /opt/homebrew/bin/msgfmt
+                endif
+        endif
+
+       # The builtin FSMonitor on MacOS builds upon Simple-IPC.  Both require
+       # Unix domain sockets and PThreads.
+        ifndef NO_PTHREADS
+        ifndef NO_UNIX_SOCKETS
+       FSMONITOR_DAEMON_BACKEND = darwin
+       FSMONITOR_OS_SETTINGS = darwin
+        endif
+        endif
+
+       BASIC_LDFLAGS += -framework CoreServices
+endif
+ifeq ($(uname_S),SunOS)
+       NEEDS_SOCKET = YesPlease
+       NEEDS_NSL = YesPlease
+       SHELL_PATH = /bin/bash
+       SANE_TOOL_PATH = /usr/xpg6/bin:/usr/xpg4/bin
+       HAVE_ALLOCA_H = YesPlease
+       NO_REGEX = YesPlease
+       NO_MSGFMT_EXTENDED_OPTIONS = YesPlease
+       HAVE_DEV_TTY = YesPlease
+        ifeq ($(uname_R),5.6)
+               SOCKLEN_T = int
+               NO_HSTRERROR = YesPlease
+               NO_IPV6 = YesPlease
+               NO_SOCKADDR_STORAGE = YesPlease
+               NO_UNSETENV = YesPlease
+               NO_MKDTEMP = YesPlease
+               NO_MEMMEM = YesPlease
+               NO_SETENV = YesPlease
+               NO_STRCASESTR = YesPlease
+               NO_STRLCPY = YesPlease
+               NO_STRTOUMAX = YesPlease
+               GIT_TEST_CMP = cmp
+        endif
+        ifeq ($(uname_R),5.7)
+               NEEDS_RESOLV = YesPlease
+               NO_IPV6 = YesPlease
+               NO_SOCKADDR_STORAGE = YesPlease
+               NO_UNSETENV = YesPlease
+               NO_MKDTEMP = YesPlease
+               NO_MEMMEM = YesPlease
+               NO_SETENV = YesPlease
+               NO_STRCASESTR = YesPlease
+               NO_STRLCPY = YesPlease
+               NO_STRTOUMAX = YesPlease
+               GIT_TEST_CMP = cmp
+        endif
+        ifeq ($(uname_R),5.8)
+               NO_UNSETENV = YesPlease
+               NO_MKDTEMP = YesPlease
+               NO_MEMMEM = YesPlease
+               NO_SETENV = YesPlease
+               NO_STRCASESTR = YesPlease
+               NO_STRTOUMAX = YesPlease
+               GIT_TEST_CMP = cmp
+        endif
+        ifeq ($(uname_R),5.9)
+               NO_UNSETENV = YesPlease
+               NO_MKDTEMP = YesPlease
+               NO_MEMMEM = YesPlease
+               NO_SETENV = YesPlease
+               NO_STRCASESTR = YesPlease
+               NO_STRTOUMAX = YesPlease
+               GIT_TEST_CMP = cmp
+        endif
+        ifeq ($(uname_R),5.10)
+               NO_UNSETENV = YesPlease
+               NO_MKDTEMP = YesPlease
+               NO_MEMMEM = YesPlease
+               NO_SETENV = YesPlease
+               NO_STRCASESTR = YesPlease
+               GIT_TEST_CMP = cmp
+        endif
+        ifeq ($(uname_R),5.11)
+               NO_UNSETENV = YesPlease
+               NO_SETENV = YesPlease
+               GIT_TEST_CMP = cmp
+        endif
+       INSTALL = /usr/ucb/install
+       TAR = gtar
+       BASIC_CFLAGS += -D__EXTENSIONS__ -D__sun__
+endif
+ifeq ($(uname_O),Cygwin)
+        ifeq ($(shell expr "$(uname_R)" : '1\.[1-6]\.'),4)
+               NO_D_TYPE_IN_DIRENT = YesPlease
+               NO_STRCASESTR = YesPlease
+               NO_MEMMEM = YesPlease
+               NO_SYMLINK_HEAD = YesPlease
+               NO_IPV6 = YesPlease
+               OLD_ICONV = UnfortunatelyYes
+               # There are conflicting reports about this.
+               # On some boxes NO_MMAP is needed, and not so elsewhere.
+               # Try commenting this out if you suspect MMAP is more efficient
+               NO_MMAP = YesPlease
+        else
+                ifeq ($(shell expr "$(uname_R)" : '1\.7\.'),4)
+                       NO_REGEX = UnfortunatelyYes
+                endif
+        endif
+       HAVE_DEV_TTY = YesPlease
+       HAVE_GETDELIM = YesPlease
+       HAVE_CLOCK_GETTIME = YesPlease
+       HAVE_CLOCK_MONOTONIC = YesPlease
+       HAVE_SYSINFO = YesPlease
+       CSPRNG_METHOD = arc4random
+       HAVE_ALLOCA_H = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       NO_FAST_WORKING_DIRECTORY = UnfortunatelyYes
+       NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
+       X = .exe
+       UNRELIABLE_FSTAT = UnfortunatelyYes
+       OBJECT_CREATION_USES_RENAMES = UnfortunatelyNeedsTo
+       MMAP_PREVENTS_DELETE = UnfortunatelyYes
+       COMPAT_OBJS += compat/win32/path-utils.o
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+endif
+ifeq ($(uname_S),FreeBSD)
+       NEEDS_LIBICONV = YesPlease
+       # Versions up to 10.1 require OLD_ICONV; 10.2 and beyond don't.
+       # A typical version string looks like "10.2-RELEASE".
+        ifeq ($(shell expr "$(uname_R)" : '[1-9]\.'),2)
+               OLD_ICONV = YesPlease
+        endif
+        ifeq ($(firstword $(subst -, ,$(uname_R))),10.0)
+               OLD_ICONV = YesPlease
+        endif
+        ifeq ($(firstword $(subst -, ,$(uname_R))),10.1)
+               OLD_ICONV = YesPlease
+        endif
+        ifeq ($(shell v=$(uname_R) && test $${v%%.*} -lt 12 && echo 1),1)
+               NO_MEMMEM = UnfortunatelyYes
+        endif
+       BASIC_CFLAGS += -I/usr/local/include
+       BASIC_LDFLAGS += -L/usr/local/lib
+       DIR_HAS_BSD_GROUP_SEMANTICS = YesPlease
+       USE_ST_TIMESPEC = YesPlease
+       PYTHON_PATH = /usr/local/bin/python
+       PERL_PATH = /usr/local/bin/perl
+       HAVE_PATHS_H = YesPlease
+       HAVE_BSD_SYSCTL = YesPlease
+       HAVE_BSD_KERN_PROC_SYSCTL = YesPlease
+       CSPRNG_METHOD = arc4random
+       PAGER_ENV = LESS=FRX LV=-c MORE=FRX
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+       FILENO_IS_A_MACRO = UnfortunatelyYes
+endif
+ifeq ($(uname_S),OpenBSD)
+       DIR_HAS_BSD_GROUP_SEMANTICS = YesPlease
+       USE_ST_TIMESPEC = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       BASIC_CFLAGS += -I/usr/local/include
+       BASIC_LDFLAGS += -L/usr/local/lib
+       HAVE_PATHS_H = YesPlease
+       HAVE_BSD_SYSCTL = YesPlease
+       CSPRNG_METHOD = arc4random
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+       FILENO_IS_A_MACRO = UnfortunatelyYes
+endif
+ifeq ($(uname_S),MirBSD)
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+       USE_ST_TIMESPEC = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       HAVE_PATHS_H = YesPlease
+       HAVE_BSD_SYSCTL = YesPlease
+       CSPRNG_METHOD = arc4random
+endif
+ifeq ($(uname_S),NetBSD)
+        ifeq ($(shell expr "$(uname_R)" : '[01]\.'),2)
+               NEEDS_LIBICONV = YesPlease
+        endif
+       BASIC_CFLAGS += -I/usr/pkg/include
+       BASIC_LDFLAGS += -L/usr/pkg/lib $(CC_LD_DYNPATH)/usr/pkg/lib
+       USE_ST_TIMESPEC = YesPlease
+       HAVE_PATHS_H = YesPlease
+       HAVE_BSD_SYSCTL = YesPlease
+       HAVE_BSD_KERN_PROC_SYSCTL = YesPlease
+       CSPRNG_METHOD = arc4random
+       PROCFS_EXECUTABLE_PATH = /proc/curproc/exe
+endif
+ifeq ($(uname_S),AIX)
+       DEFAULT_PAGER = more
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_MKDTEMP = YesPlease
+       NO_STRLCPY = YesPlease
+       NO_NSEC = YesPlease
+       NO_REGEX = NeedsStartEnd
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+       INTERNAL_QSORT = UnfortunatelyYes
+       NEEDS_LIBICONV = YesPlease
+       BASIC_CFLAGS += -D_LARGE_FILES
+       FILENO_IS_A_MACRO = UnfortunatelyYes
+       NEED_ACCESS_ROOT_HANDLER = UnfortunatelyYes
+        ifeq ($(shell expr "$(uname_V)" : '[1234]'),1)
+               NO_PTHREADS = YesPlease
+        else
+               PTHREAD_LIBS = -lpthread
+        endif
+        ifeq ($(shell expr "$(uname_V).$(uname_R)" : '5\.1'),3)
+               INLINE = ''
+        endif
+       GIT_TEST_CMP = cmp
+endif
+ifeq ($(uname_S),GNU)
+       # GNU/Hurd
+       HAVE_ALLOCA_H = YesPlease
+       NO_STRLCPY = YesPlease
+       HAVE_PATHS_H = YesPlease
+       LIBC_CONTAINS_LIBINTL = YesPlease
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+endif
+ifeq ($(uname_S),IRIX)
+       NO_SETENV = YesPlease
+       NO_UNSETENV = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_MKDTEMP = YesPlease
+       # When compiled with the MIPSpro 7.4.4m compiler, and without pthreads
+       # (i.e. NO_PTHREADS is set), and _with_ MMAP (i.e. NO_MMAP is not set),
+       # git dies with a segmentation fault when trying to access the first
+       # entry of a reflog.  The conservative choice is made to always set
+       # NO_MMAP.  If you suspect that your compiler is not affected by this
+       # issue, comment out the NO_MMAP statement.
+       NO_MMAP = YesPlease
+       NO_REGEX = YesPlease
+       SNPRINTF_RETURNS_BOGUS = YesPlease
+       SHELL_PATH = /usr/gnu/bin/bash
+       NEEDS_LIBGEN = YesPlease
+endif
+ifeq ($(uname_S),IRIX64)
+       NO_SETENV = YesPlease
+       NO_UNSETENV = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_MKDTEMP = YesPlease
+       # When compiled with the MIPSpro 7.4.4m compiler, and without pthreads
+       # (i.e. NO_PTHREADS is set), and _with_ MMAP (i.e. NO_MMAP is not set),
+       # git dies with a segmentation fault when trying to access the first
+       # entry of a reflog.  The conservative choice is made to always set
+       # NO_MMAP.  If you suspect that your compiler is not affected by this
+       # issue, comment out the NO_MMAP statement.
+       NO_MMAP = YesPlease
+       NO_REGEX = YesPlease
+       SNPRINTF_RETURNS_BOGUS = YesPlease
+       SHELL_PATH = /usr/gnu/bin/bash
+       NEEDS_LIBGEN = YesPlease
+endif
+ifeq ($(uname_S),HP-UX)
+       INLINE = __inline
+       NO_IPV6 = YesPlease
+       NO_SETENV = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_STRLCPY = YesPlease
+       NO_MKDTEMP = YesPlease
+       NO_UNSETENV = YesPlease
+       NO_HSTRERROR = YesPlease
+       NO_SYS_SELECT_H = YesPlease
+       SNPRINTF_RETURNS_BOGUS = YesPlease
+       NO_NSEC = YesPlease
+        ifeq ($(uname_R),B.11.00)
+               NO_INET_NTOP = YesPlease
+               NO_INET_PTON = YesPlease
+        endif
+        ifeq ($(uname_R),B.10.20)
+               # Override HP-UX 11.x setting:
+               INLINE =
+               SOCKLEN_T = size_t
+               NO_PREAD = YesPlease
+               NO_INET_NTOP = YesPlease
+               NO_INET_PTON = YesPlease
+        endif
+       GIT_TEST_CMP = cmp
+endif
+ifeq ($(uname_S),Windows)
+       GIT_VERSION := $(GIT_VERSION).MSVC
+       pathsep = ;
+       # Assume that this is built in Git for Windows' SDK
+        ifeq (MINGW32,$(MSYSTEM))
+               prefix = /mingw32
+        else
+                ifeq (CLANGARM64,$(MSYSTEM))
+                       prefix = /clangarm64
+                else
+                       prefix = /mingw64
+                endif
+        endif
+       # Prepend MSVC 64-bit tool-chain to PATH.
+       #
+       # A regular Git Bash *does not* have cl.exe in its $PATH. As there is a
+       # link.exe next to, and required by, cl.exe, we have to prepend this
+       # onto the existing $PATH.
+       #
+       SANE_TOOL_PATH ?= $(msvc_bin_dir_msys)
+       HAVE_ALLOCA_H = YesPlease
+       NO_PREAD = YesPlease
+       NEEDS_CRYPTO_WITH_SSL = YesPlease
+       NO_LIBGEN_H = YesPlease
+       NO_POLL = YesPlease
+       NO_SYMLINK_HEAD = YesPlease
+       NO_IPV6 = YesPlease
+       NO_SETENV = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_STRLCPY = YesPlease
+       NO_MEMMEM = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       NO_STRTOUMAX = YesPlease
+       NO_MKDTEMP = YesPlease
+       NO_INTTYPES_H = YesPlease
+       CSPRNG_METHOD = rtlgenrandom
+       # VS2015 with UCRT claims that snprintf and friends are C99 compliant,
+       # so we don't need this:
+       #
+       #   SNPRINTF_RETURNS_BOGUS = YesPlease
+
+       # The builtin FSMonitor requires Named Pipes and Threads on Windows.
+       # These are always available, so we do not have to conditionally
+       # support it.
+       FSMONITOR_DAEMON_BACKEND = win32
+       FSMONITOR_OS_SETTINGS = win32
+
+       NO_SVN_TESTS = YesPlease
+       RUNTIME_PREFIX = YesPlease
+       HAVE_WPGMPTR = YesWeDo
+       NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
+       USE_WIN32_IPC = YesPlease
+       USE_WIN32_MMAP = YesPlease
+       MMAP_PREVENTS_DELETE = UnfortunatelyYes
+       # USE_NED_ALLOCATOR = YesPlease
+       UNRELIABLE_FSTAT = UnfortunatelyYes
+       OBJECT_CREATION_USES_RENAMES = UnfortunatelyNeedsTo
+       NO_REGEX = YesPlease
+       NO_GETTEXT = YesPlease
+       NO_PYTHON = YesPlease
+       ETAGS_TARGET = ETAGS
+       NO_POSIX_GOODIES = UnfortunatelyYes
+       NATIVE_CRLF = YesPlease
+       DEFAULT_HELP_FORMAT = html
+ifeq (/mingw64,$(subst 32,64,$(subst clangarm,mingw,$(prefix))))
+       # Move system config into top-level /etc/
+       ETC_GITCONFIG = ../etc/gitconfig
+       ETC_GITATTRIBUTES = ../etc/gitattributes
+endif
+
+       CC = compat/vcbuild/scripts/clink.pl
+       AR = compat/vcbuild/scripts/lib.pl
+       CFLAGS =
+       BASIC_CFLAGS = -nologo -I. -Icompat/vcbuild/include -DWIN32 -D_CONSOLE -DHAVE_STRING_H -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE
+       COMPAT_OBJS = compat/msvc.o compat/winansi.o \
+               compat/win32/flush.o \
+               compat/win32/path-utils.o \
+               compat/win32/pthread.o compat/win32/syslog.o \
+               compat/win32/trace2_win32_process_info.o \
+               compat/win32/dirent.o
+       COMPAT_CFLAGS = -D__USE_MINGW_ACCESS -DDETECT_MSYS_TTY -DNOGDI -DHAVE_STRING_H -Icompat -Icompat/regex -Icompat/win32 -DSTRIP_EXTENSION=\".exe\"
+       BASIC_LDFLAGS = -IGNORE:4217 -IGNORE:4049 -NOLOGO -ENTRY:wmainCRTStartup -SUBSYSTEM:CONSOLE
+       # invalidcontinue.obj allows Git's source code to close the same file
+       # handle twice, or to access the osfhandle of an already-closed stdout
+       # See https://msdn.microsoft.com/en-us/library/ms235330.aspx
+       EXTLIBS = user32.lib advapi32.lib shell32.lib wininet.lib ws2_32.lib invalidcontinue.obj kernel32.lib ntdll.lib
+       PTHREAD_LIBS =
+       lib =
+       BASIC_CFLAGS += $(vcpkg_inc) $(sdk_includes) $(msvc_includes)
+ifndef DEBUG
+       BASIC_CFLAGS += $(vcpkg_rel_lib)
+else
+       BASIC_CFLAGS += $(vcpkg_dbg_lib)
+endif
+       BASIC_CFLAGS += $(sdk_libs) $(msvc_libs)
+
+ifneq ($(USE_MSVC_CRTDBG),)
+       # Optionally enable memory leak reporting.
+       BASIC_CFLAGS += -DUSE_MSVC_CRTDBG
+endif
+       # Always give "-Zi" to the compiler and "-debug" to linker (even in
+       # release mode) to force a PDB to be generated (like RelWithDebInfo).
+       BASIC_CFLAGS += -Zi
+       BASIC_LDFLAGS += -debug -Zf
+
+ifdef NO_SAFESEH
+       LDFLAGS += -SAFESEH:NO
+endif
+
+ifndef DEBUG
+       BASIC_CFLAGS += -GL -Gy -O2 -Oy- -MD -DNDEBUG
+       BASIC_LDFLAGS += -release -LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO /DEBUGTYPE:CV,FIXUP
+       AR += -LTCG
+else
+       BASIC_CFLAGS += -MDd -DDEBUG -D_DEBUG
+endif
+       X = .exe
+
+       EXTRA_PROGRAMS += headless-git$X
+
+compat/msvc.o: compat/msvc.c compat/mingw.c GIT-CFLAGS
+endif
+ifeq ($(uname_S),Interix)
+       NO_INITGROUPS = YesPlease
+       NO_IPV6 = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_MKDTEMP = YesPlease
+       NO_STRTOUMAX = YesPlease
+       NO_NSEC = YesPlease
+        ifeq ($(uname_R),3.5)
+               NO_INET_NTOP = YesPlease
+               NO_INET_PTON = YesPlease
+               NO_SOCKADDR_STORAGE = YesPlease
+        endif
+        ifeq ($(uname_R),5.2)
+               NO_INET_NTOP = YesPlease
+               NO_INET_PTON = YesPlease
+               NO_SOCKADDR_STORAGE = YesPlease
+        endif
+endif
+ifeq ($(uname_S),Minix)
+       NO_IPV6 = YesPlease
+       NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
+       NO_NSEC = YesPlease
+       NEEDS_LIBGEN =
+       NEEDS_CRYPTO_WITH_SSL = YesPlease
+       NEEDS_RESOLV =
+       NO_HSTRERROR = YesPlease
+       NO_MMAP = YesPlease
+       NO_CURL =
+       NO_EXPAT =
+endif
+ifeq ($(uname_S),NONSTOP_KERNEL)
+       # Needs some C99 features, "inline" is just one of them.
+       # INLINE='' would just replace one set of warnings with another and
+       # still not compile in c89 mode, due to non-const array initializations.
+       CC = cc -c99
+       # Build down-rev compatible objects that don't use our new getopt_long.
+        ifeq ($(uname_R).$(uname_V),J06.21)
+               CC += -WRVU=J06.20
+        endif
+        ifeq ($(uname_R).$(uname_V),L17.02)
+               CC += -WRVU=L16.05
+        endif
+       # Disable all optimization, seems to result in bad code, with -O or -O2
+       # or even -O1 (default), /usr/local/libexec/git-core/git-pack-objects
+       # abends on "git push". Needs more investigation.
+       CFLAGS = -g -O0 -Winline
+       # We'd want it to be here.
+       prefix = /usr/local
+       # perl and python must be in /usr/bin on NonStop - supplied by HPE
+       # with operating system in that managed directory.
+       PERL_PATH = /usr/bin/perl
+       PYTHON_PATH = /usr/bin/python
+       # The current /usr/coreutils/rm at lowest support level does not work
+       # with the git test structure. Long paths as in
+       # 'trash directory...' cause rm to terminate prematurely without fully
+       # removing the directory at OS releases J06.21 and L17.02.
+       # Default to the older rm until those two releases are deprecated.
+       RM = /bin/rm -f
+       NEEDS_CRYPTO_WITH_SSL = YesPlease
+       HAVE_DEV_TTY = YesPlease
+       HAVE_LIBCHARSET_H = YesPlease
+       HAVE_STRINGS_H = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       NEEDS_LIBINTL_BEFORE_LIBICONV = YesPlease
+       NO_SYS_SELECT_H = UnfortunatelyYes
+       NO_D_TYPE_IN_DIRENT = YesPlease
+       NO_GETTEXT = YesPlease
+       NO_HSTRERROR = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_STRLCPY = YesPlease
+       NO_SETENV = YesPlease
+       NO_UNSETENV = YesPlease
+       NO_MKDTEMP = YesPlease
+       # Currently libiconv-1.9.1.
+       OLD_ICONV = UnfortunatelyYes
+       NO_REGEX = NeedsStartEnd
+       NO_PTHREADS = UnfortunatelyYes
+       FREAD_READS_DIRECTORIES = UnfortunatelyYes
+
+       # Not detected (nor checked for) by './configure'.
+       # We don't have SA_RESTART on NonStop, unfortunalety.
+       COMPAT_CFLAGS += -DSA_RESTART=0
+       # Apparently needed in compat/fnmatch/fnmatch.c.
+       COMPAT_CFLAGS += -DHAVE_STRING_H=1
+       NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
+       NO_NSEC = YesPlease
+       NO_PREAD = YesPlease
+       NO_MMAP = YesPlease
+       NO_POLL = YesPlease
+       NO_INTPTR_T = UnfortunatelyYes
+       CSPRNG_METHOD = openssl
+       SANE_TOOL_PATH = /usr/coreutils/bin:/usr/local/bin
+       SHELL_PATH = /usr/coreutils/bin/bash
+endif
+ifeq ($(uname_S),OS/390)
+       NO_SYS_POLL_H = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_REGEX = YesPlease
+       NO_MMAP = YesPlease
+       NO_NSEC = YesPlease
+       NO_STRLCPY = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_GECOS_IN_PWENT = YesPlease
+       HAVE_STRINGS_H = YesPlease
+       NEEDS_MODE_TRANSLATION = YesPlease
+       HAVE_ZOS_GET_EXECUTABLE_PATH = YesPlease
+endif
+ifeq ($(uname_S),MINGW)
+        ifeq ($(shell expr "$(uname_R)" : '1\.'),2)
+               $(error "Building with MSys is no longer supported")
+        endif
+       pathsep = ;
+       HAVE_ALLOCA_H = YesPlease
+       NO_PREAD = YesPlease
+       NEEDS_CRYPTO_WITH_SSL = YesPlease
+       NO_LIBGEN_H = YesPlease
+       NO_POLL = YesPlease
+       NO_SYMLINK_HEAD = YesPlease
+       NO_SETENV = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_STRLCPY = YesPlease
+       NO_MEMMEM = YesPlease
+       NEEDS_LIBICONV = YesPlease
+       NO_STRTOUMAX = YesPlease
+       NO_MKDTEMP = YesPlease
+       NO_SVN_TESTS = YesPlease
+
+       # The builtin FSMonitor requires Named Pipes and Threads on Windows.
+       # These are always available, so we do not have to conditionally
+       # support it.
+       FSMONITOR_DAEMON_BACKEND = win32
+       FSMONITOR_OS_SETTINGS = win32
+
+       RUNTIME_PREFIX = YesPlease
+       HAVE_WPGMPTR = YesWeDo
+       NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
+       USE_WIN32_IPC = YesPlease
+       USE_WIN32_MMAP = YesPlease
+       MMAP_PREVENTS_DELETE = UnfortunatelyYes
+       UNRELIABLE_FSTAT = UnfortunatelyYes
+       OBJECT_CREATION_USES_RENAMES = UnfortunatelyNeedsTo
+       NO_REGEX = YesPlease
+       ETAGS_TARGET = ETAGS
+       NO_POSIX_GOODIES = UnfortunatelyYes
+       DEFAULT_HELP_FORMAT = html
+       HAVE_PLATFORM_PROCINFO = YesPlease
+       CSPRNG_METHOD = rtlgenrandom
+       BASIC_LDFLAGS += -municode
+       COMPAT_CFLAGS += -DNOGDI -Icompat -Icompat/win32
+       COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\"
+       COMPAT_OBJS += compat/mingw.o compat/winansi.o \
+               compat/win32/trace2_win32_process_info.o \
+               compat/win32/flush.o \
+               compat/win32/path-utils.o \
+               compat/win32/pthread.o compat/win32/syslog.o \
+               compat/win32/dirent.o
+       BASIC_CFLAGS += -DWIN32
+       EXTLIBS += -lws2_32
+       GITLIBS += git.res
+       PTHREAD_LIBS =
+       RC = windres -O coff
+       NATIVE_CRLF = YesPlease
+       X = .exe
+       # MSys2
+       prefix = /usr/
+       # Enable DEP
+       BASIC_LDFLAGS += -Wl,--nxcompat
+       # Enable ASLR (unless debugging)
+        ifneq (,$(findstring -O,$(filter-out -O0 -Og,$(CFLAGS))))
+               BASIC_LDFLAGS += -Wl,--dynamicbase
+        endif
+        ifeq (MINGW32,$(MSYSTEM))
+               prefix = /mingw32
+               HOST_CPU = i686
+               BASIC_LDFLAGS += -Wl,--pic-executable,-e,_mainCRTStartup
+        endif
+        ifeq (MINGW64,$(MSYSTEM))
+               prefix = /mingw64
+               HOST_CPU = x86_64
+               BASIC_LDFLAGS += -Wl,--pic-executable,-e,mainCRTStartup
+        else ifeq (CLANGARM64,$(MSYSTEM))
+               prefix = /clangarm64
+               HOST_CPU = aarch64
+               BASIC_LDFLAGS += -Wl,--pic-executable,-e,mainCRTStartup
+        else
+               COMPAT_CFLAGS += -D_USE_32BIT_TIME_T
+               BASIC_LDFLAGS += -Wl,--large-address-aware
+        endif
+       CC = gcc
+       COMPAT_CFLAGS += -D__USE_MINGW_ANSI_STDIO=0 -DDETECT_MSYS_TTY \
+               -fstack-protector-strong
+       EXTLIBS += -lntdll
+       EXTRA_PROGRAMS += headless-git$X
+       INSTALL = /bin/install
+       INTERNAL_QSORT = YesPlease
+       HAVE_LIBCHARSET_H = YesPlease
+       USE_GETTEXT_SCHEME = fallthrough
+       USE_LIBPCRE = YesPlease
+        ifneq (CLANGARM64,$(MSYSTEM))
+               USE_NED_ALLOCATOR = YesPlease
+        endif
+        ifeq (/mingw64,$(subst 32,64,$(subst clangarm,mingw,$(prefix))))
+               # Move system config into top-level /etc/
+               ETC_GITCONFIG = ../etc/gitconfig
+               ETC_GITATTRIBUTES = ../etc/gitattributes
+        endif
+endif
+ifeq ($(uname_S),QNX)
+       COMPAT_CFLAGS += -DSA_RESTART=0
+       EXPAT_NEEDS_XMLPARSE_H = YesPlease
+       HAVE_STRINGS_H = YesPlease
+       NEEDS_SOCKET = YesPlease
+       NO_GETPAGESIZE = YesPlease
+       NO_ICONV = YesPlease
+       NO_MEMMEM = YesPlease
+       NO_MKDTEMP = YesPlease
+       NO_NSEC = YesPlease
+       NO_PTHREADS = YesPlease
+       NO_STRCASESTR = YesPlease
+       NO_STRLCPY = YesPlease
+endif
diff --git a/gitweb/GITWEB-BUILD-OPTIONS.in b/gitweb/GITWEB-BUILD-OPTIONS.in
new file mode 100644 (file)
index 0000000..41ac206
--- /dev/null
@@ -0,0 +1,24 @@
+PERL_PATH=@PERL_PATH@
+JSMIN=@JSMIN@
+CSSMIN=@CSSMIN@
+GIT_BINDIR=@GIT_BINDIR@
+GITWEB_CONFIG=@GITWEB_CONFIG@
+GITWEB_CONFIG_SYSTEM=@GITWEB_CONFIG_SYSTEM@
+GITWEB_CONFIG_COMMON=@GITWEB_CONFIG_COMMON@
+GITWEB_HOME_LINK_STR=@GITWEB_HOME_LINK_STR@
+GITWEB_SITENAME=@GITWEB_SITENAME@
+GITWEB_PROJECTROOT=@GITWEB_PROJECTROOT@
+GITWEB_PROJECT_MAXDEPTH=@GITWEB_PROJECT_MAXDEPTH@
+GITWEB_EXPORT_OK=@GITWEB_EXPORT_OK@
+GITWEB_STRICT_EXPORT=@GITWEB_STRICT_EXPORT@
+GITWEB_BASE_URL=@GITWEB_BASE_URL@
+GITWEB_LIST=@GITWEB_LIST@
+GITWEB_HOMETEXT=@GITWEB_HOMETEXT@
+GITWEB_CSS=@GITWEB_CSS@
+GITWEB_LOGO=@GITWEB_LOGO@
+GITWEB_FAVICON=@GITWEB_FAVICON@
+GITWEB_JS=@GITWEB_JS@
+GITWEB_SITE_HTML_HEAD_STRING=@GITWEB_SITE_HTML_HEAD_STRING@
+GITWEB_SITE_HEADER=@GITWEB_SITE_HEADER@
+GITWEB_SITE_FOOTER=@GITWEB_SITE_FOOTER@
+HIGHLIGHT_BIN=@HIGHLIGHT_BIN@
diff --git a/gitweb/INSTALL b/gitweb/INSTALL
new file mode 100644 (file)
index 0000000..5bfa496
--- /dev/null
@@ -0,0 +1,328 @@
+GIT web Interface (gitweb) Installation
+=======================================
+
+First you have to generate gitweb.cgi from gitweb.perl using
+"make gitweb", then "make install-gitweb" appropriate files
+(gitweb.cgi, gitweb.js, gitweb.css, git-logo.png and git-favicon.png)
+to their destination. For example if git was (or is) installed with
+/usr prefix and gitwebdir is /var/www/cgi-bin, you can do
+
+       $ make prefix=/usr gitweb                            ;# as yourself
+       # make gitwebdir=/var/www/cgi-bin install-gitweb     ;# as root
+
+Alternatively you can use autoconf generated ./configure script to
+set up path to git binaries (via config.mak.autogen), so you can write
+instead
+
+       $ make configure                     ;# as yourself
+       $ ./configure --prefix=/usr          ;# as yourself
+       $ make gitweb                        ;# as yourself
+       # make gitwebdir=/var/www/cgi-bin \
+              install-gitweb                ;# as root
+
+The above example assumes that your web server is configured to run
+[executable] files in /var/www/cgi-bin/ as server scripts (as CGI
+scripts).
+
+
+Requirements
+------------
+
+ - Core git tools
+ - Perl 5.8.1
+ - Perl modules: CGI, Encode, Fcntl, File::Find, File::Basename.
+ - web server
+
+The following optional Perl modules are required for extra features
+ - CGI::Fast and FCGI - for running gitweb as FastCGI script
+ - HTML::TagCloud - for fancy tag cloud in project list view
+ - HTTP::Date or Time::ParseDate - to support If-Modified-Since for feeds
+
+
+Build time configuration
+------------------------
+
+See also "How to configure gitweb for your local system" section below.
+
+- There are many configuration variables which affect building of
+  gitweb.cgi; see "default configuration for gitweb" section in main
+  (top dir) Makefile, and instructions for building gitweb target.
+
+  One of the most important is where to find the git wrapper binary. Gitweb
+  tries to find the git wrapper at $(bindir)/git, so you have to set $bindir
+  when building gitweb.cgi, or $prefix from which $bindir is derived. If
+  you build and install gitweb together with the rest of the git suite,
+  there should be no problems. Otherwise, if git was for example
+  installed from a binary package, you have to set $prefix (or $bindir)
+  accordingly.
+
+- Another important issue is where are git repositories you want to make
+  available to gitweb. By default gitweb searches for repositories under
+  /pub/git; if you want to have projects somewhere else, like /home/git,
+  use GITWEB_PROJECTROOT build configuration variable.
+
+  By default all git repositories under projectroot are visible and
+  available to gitweb. The list of projects is generated by default by
+  scanning the projectroot directory for git repositories. This can be
+  changed (configured) as described in "Gitweb repositories" section
+  below.
+
+  Note that gitweb deals directly with the object database, and does not
+  need a working directory; the name of the project is the name of its
+  repository object database, usually projectname.git for bare
+  repositories. If you want to provide gitweb access to non-bare (live)
+  repositories, you can make projectname.git a symbolic link under
+  projectroot linking to projectname/.git (but it is just
+  a suggestion).
+
+- You can control where gitweb tries to find its main CSS style file,
+  its JavaScript file, its favicon and logo with the GITWEB_CSS, GITWEB_JS
+  GITWEB_FAVICON and GITWEB_LOGO build configuration variables. By default
+  gitweb tries to find them in the same directory as gitweb.cgi script.
+
+- You can optionally generate minified versions of gitweb.js and gitweb.css
+  by defining the JSMIN and CSSMIN build configuration variables. By default
+  the non-minified versions will be used. NOTE: if you enable this option,
+  substitute gitweb.min.js and gitweb.min.css for all uses of gitweb.js and
+  gitweb.css in the help files.
+
+
+How to configure gitweb for your local system
+---------------------------------------------
+
+You can specify the following configuration variables when building GIT:
+
+ * GIT_BINDIR
+   Points where to find the git executable.  You should set it up to
+   the place where the git binary was installed (usually /usr/bin) if you
+   don't install git from sources together with gitweb.  [Default: $(bindir)]
+ * GITWEB_SITENAME
+   Shown in the title of all generated pages, defaults to the server name
+   (SERVER_NAME CGI environment variable) if not set. [No default]
+ * GITWEB_PROJECTROOT
+   The root directory for all projects shown by gitweb. Must be set
+   correctly for gitweb to find repositories to display.  See also
+   "Gitweb repositories" in the INSTALL file for gitweb.  [Default: /pub/git]
+ * GITWEB_PROJECT_MAXDEPTH
+   The filesystem traversing limit for getting the project list; the number
+   is taken as depth relative to the projectroot.  It is used when
+   GITWEB_LIST is a directory (or is not set; then project root is used).
+   This is meant to speed up project listing on large work trees by limiting
+   search depth.  [Default: 2007]
+ * GITWEB_LIST
+   Points to a directory to scan for projects (defaults to project root
+   if not set / if empty) or to a file with explicit listing of projects
+   (together with projects' ownership). See "Generating projects list
+   using gitweb" in INSTALL file for gitweb to find out how to generate
+   such file from scan of a directory. [No default, which means use root
+   directory for projects]
+ * GITWEB_EXPORT_OK
+   Show repository only if this file exists (in repository).  Only
+   effective if this variable evaluates to true.  [No default / Not set]
+ * GITWEB_STRICT_EXPORT
+   Only allow viewing of repositories also shown on the overview page.
+   This for example makes GITWEB_EXPORT_OK to decide if repository is
+   available and not only if it is shown.  If GITWEB_LIST points to
+   file with list of project, only those repositories listed would be
+   available for gitweb.  [No default]
+ * GITWEB_HOMETEXT
+   Points to an .html file which is included on the gitweb project
+   overview page ('projects_list' view), if it exists.  Relative to
+   gitweb.cgi script.  [Default: indextext.html]
+ * GITWEB_SITE_HTML_HEAD_STRING
+   html snippet to include in the <head> section of each page. [No default]
+ * GITWEB_SITE_HEADER
+   Filename of html text to include at top of each page.  Relative to
+   gitweb.cgi script.  [No default]
+ * GITWEB_SITE_FOOTER
+   Filename of html text to include at bottom of each page.  Relative to
+   gitweb.cgi script.  [No default]
+ * GITWEB_HOME_LINK_STR
+   String of the home link on top of all pages, leading to $home_link
+   (usually main gitweb page, which means projects list).  Used as first
+   part of gitweb view "breadcrumb trail": <home> / <project> / <view>.
+   [Default: projects]
+ * GITWEB_SITENAME
+   Name of your site or organization to appear in page titles.  Set it
+   to something descriptive for clearer bookmarks etc.  If not set
+   (if empty) gitweb uses "$SERVER_NAME Git", or "Untitled Git" if
+   SERVER_NAME CGI environment variable is not set (e.g. if running
+   gitweb as standalone script).  [No default]
+ * GITWEB_BASE_URL
+   Git base URLs used for URL to where fetch project from, i.e. full
+   URL is "$git_base_url/$project".  Shown on projects summary page.
+   Repository URL for project can be also configured per repository; this
+   takes precedence over URLs composed from base URL and a project name.
+   Note that you can setup multiple base URLs (for example one for
+   git:// protocol access, another for http:// access) from the gitweb
+   config file.  [No default]
+ * GITWEB_CSS
+   Points to the location where you put gitweb.css on your web server
+   (or to be more generic, the URI of gitweb stylesheet).  Relative to the
+   base URI of gitweb.  Note that you can setup multiple stylesheets from
+   the gitweb config file.  [Default: static/gitweb.css (or
+   static/gitweb.min.css if the CSSMIN variable is defined / CSS minifier
+   is used)]
+ * GITWEB_JS
+   Points to the location where you put gitweb.js on your web server
+   (or to be more generic URI of JavaScript code used by gitweb).
+   Relative to base URI of gitweb.  [Default: static/gitweb.js (or
+   static/gitweb.min.js if JSMIN build variable is defined / JavaScript
+   minifier is used)]
+ * CSSMIN, JSMIN
+   Invocation of a CSS minifier or a JavaScript minifier, respectively,
+   working as a filter (source on standard input, minified result on
+   standard output).  If set, it is used to generate a minified version of
+   'static/gitweb.css' or 'static/gitweb.js', respectively.  *Note* that
+   minified files would have *.min.css and *.min.js extension, which is
+   important if you also set GITWEB_CSS and/or GITWEB_JS.  [No default]
+ * GITWEB_LOGO
+   Points to the location where you put git-logo.png on your web server
+   (or to be more generic URI of logo, 72x27 size, displayed in top right
+   corner of each gitweb page, and used as logo for Atom feed).  Relative
+   to base URI of gitweb.  [Default: static/git-logo.png]
+ * GITWEB_FAVICON
+   Points to the location where you put git-favicon.png on your web server
+   (or to be more generic URI of favicon, assumed to be image/png type;
+   web browsers that support favicons (website icons) may display them
+   in the browser's URL bar and next to site name in bookmarks).  Relative
+   to base URI of gitweb.  [Default: static/git-favicon.png]
+ * GITWEB_CONFIG
+   This Perl file will be loaded using 'do' and can be used to override any
+   of the options above as well as some other options -- see the "Runtime
+   gitweb configuration" section below, and top of 'gitweb.cgi' for their
+   full list and description.  If the environment variable GITWEB_CONFIG
+   is set when gitweb.cgi is executed, then the file specified in the
+   environment variable will be loaded instead of the file specified
+   when gitweb.cgi was created.  [Default: gitweb_config.perl]
+ * GITWEB_CONFIG_SYSTEM
+   This Perl file will be loaded using 'do' as a fallback if GITWEB_CONFIG
+   does not exist.  If the environment variable GITWEB_CONFIG_SYSTEM is set
+   when gitweb.cgi is executed, then the file specified in the environment
+   variable will be loaded instead of the file specified when gitweb.cgi was
+   created.  [Default: /etc/gitweb.conf]
+ * HIGHLIGHT_BIN
+   Path to the highlight executable to use (must be the one from
+   http://andre-simon.de/zip/download.php due to assumptions about parameters and output).
+   Useful if highlight is not installed on your webserver's PATH.
+   [Default: highlight]
+
+Build example
+~~~~~~~~~~~~~
+
+- To install gitweb to /var/www/cgi-bin/gitweb/, when git wrapper
+  is installed at /usr/local/bin/git, the repositories (projects)
+  we want to display are under /home/local/scm, and you do not use
+  minifiers, you can do
+
+       make GITWEB_PROJECTROOT="/home/local/scm" \
+            GITWEB_JS="gitweb/static/gitweb.js" \
+            GITWEB_CSS="gitweb/static/gitweb.css" \
+            GITWEB_LOGO="gitweb/static/git-logo.png" \
+            GITWEB_FAVICON="gitweb/static/git-favicon.png" \
+            bindir=/usr/local/bin \
+            gitweb
+
+       make gitwebdir=/var/www/cgi-bin/gitweb install-gitweb
+
+
+Gitweb config file
+------------------
+
+See also "Runtime gitweb configuration" section in README file
+for gitweb (in gitweb/README), and gitweb.conf(5) manpage.
+
+- You can configure gitweb further using the per-instance gitweb configuration file;
+  by default this is a file named gitweb_config.perl in the same place as
+  gitweb.cgi script. You can control the default place for the config file
+  using the GITWEB_CONFIG build configuration variable, and you can set it
+  using the GITWEB_CONFIG environment variable. If this file does not
+  exist, gitweb looks for a system-wide configuration file, normally
+  /etc/gitweb.conf. You can change the default using the
+  GITWEB_CONFIG_SYSTEM build configuration variable, and override it
+  through the GITWEB_CONFIG_SYSTEM environment variable.
+
+  Note that the GITWEB_CONFIG_SYSTEM system-wide configuration file is
+  only used for instances that lack per-instance configuration file.
+  You can use GITWEB_CONFIG_COMMON common system-wide configuration
+  file (normally /etc/gitweb-common.conf) to keep common default
+  settings that apply to all instances.  Settings from per-instance or
+  system-wide configuration file override those from common system-wide
+  configuration file.
+
+- The gitweb config file is a fragment of perl code. You can set variables
+  using "our $variable = value"; text from "#" character until the end
+  of a line is ignored. See perlsyn(1) for details.
+
+  See the top of gitweb.perl file for examples of customizable options.
+
+Config file example
+~~~~~~~~~~~~~~~~~~~
+
+To enable blame, pickaxe search, and snapshot support, while allowing
+individual projects to turn them off, put the following in your
+GITWEB_CONFIG file:
+
+       $feature{'blame'}{'default'} = [1];
+       $feature{'blame'}{'override'} = 1;
+
+       $feature{'pickaxe'}{'default'} = [1];
+       $feature{'pickaxe'}{'override'} = 1;
+
+       $feature{'snapshot'}{'default'} = ['zip', 'tgz'];
+       $feature{'snapshot'}{'override'} = 1;
+
+If you allow overriding for the snapshot feature, you can specify which
+snapshot formats are globally disabled. You can also add any command line
+options you want (such as setting the compression level). For instance,
+you can disable Zip compressed snapshots and set GZip to run at level 6 by
+adding the following lines to your $GITWEB_CONFIG:
+
+       $known_snapshot_formats{'zip'}{'disabled'} = 1;
+       $known_snapshot_formats{'tgz'}{'compressor'} = ['gzip','-6'];
+
+
+Gitweb repositories
+-------------------
+
+By default gitweb shows all git repositories under single common repository
+root on a local filesystem; see description of GITWEB_PROJECTROOT build-time
+configuration variable above (and also of GITWEB_LIST).
+
+More advanced usage, like limiting access or visibility of repositories and
+managing multiple roots are described on gitweb manpage.
+
+
+Example web server configuration
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+See also "Webserver configuration" and "Advanced web server setup" sections
+in gitweb(1) manpage.
+
+
+- Apache2, gitweb installed as CGI script,
+  under /var/www/cgi-bin/
+
+       ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
+
+       <Directory "/var/www/cgi-bin">
+           Options Indexes FollowSymlinks ExecCGI
+           AllowOverride None
+           Order allow,deny
+           Allow from all
+       </Directory>
+
+- Apache2, gitweb installed as mod_perl legacy script,
+  under /var/www/perl/
+
+       Alias /perl "/var/www/perl"
+
+       <Directory "/var/www/perl">
+           SetHandler perl-script
+           PerlResponseHandler ModPerl::Registry
+           PerlOptions +ParseHeaders
+           Options Indexes FollowSymlinks +ExecCGI
+           AllowOverride None
+           Order allow,deny
+           Allow from all
+       </Directory>
diff --git a/gitweb/Makefile b/gitweb/Makefile
new file mode 100644 (file)
index 0000000..26a683d
--- /dev/null
@@ -0,0 +1,146 @@
+ifndef MAK_DIR_GITWEB
+$(error do not run gitweb/Makefile stand-alone anymore. The "gitweb" and \
+"install-gitweb" targets now live in the top-level Makefile)
+endif
+
+# Define JSMIN to point to JavaScript minifier that functions as
+# a filter to have static/gitweb.js minified.
+#
+# Define CSSMIN to point to a CSS minifier in order to generate a minified
+# version of static/gitweb.css
+#
+
+# default configuration for gitweb
+GITWEB_CONFIG = gitweb_config.perl
+GITWEB_CONFIG_SYSTEM = /etc/gitweb.conf
+GITWEB_CONFIG_COMMON = /etc/gitweb-common.conf
+GITWEB_HOME_LINK_STR = projects
+GITWEB_SITENAME =
+GITWEB_PROJECTROOT = /pub/git
+GITWEB_PROJECT_MAXDEPTH = 2007
+GITWEB_EXPORT_OK =
+GITWEB_STRICT_EXPORT =
+GITWEB_BASE_URL =
+GITWEB_LIST =
+GITWEB_HOMETEXT = indextext.html
+GITWEB_CSS_IN = static/gitweb.css
+GITWEB_CSS = $(GITWEB_CSS_IN)
+GITWEB_LOGO = static/git-logo.png
+GITWEB_FAVICON = static/git-favicon.png
+GITWEB_JS_IN = static/gitweb.js
+GITWEB_JS = $(GITWEB_JS_IN)
+GITWEB_SITE_HTML_HEAD_STRING =
+GITWEB_SITE_HEADER =
+GITWEB_SITE_FOOTER =
+HIGHLIGHT_BIN = highlight
+
+# What targets we'll add to 'all' for "make gitweb"
+GITWEB_ALL =
+GITWEB_ALL += gitweb.cgi
+GITWEB_ALL += $(GITWEB_JS)
+
+MAK_DIR_GITWEB_ALL = $(addprefix $(MAK_DIR_GITWEB),$(GITWEB_ALL))
+
+GITWEB_PROGRAMS = gitweb.cgi
+
+GITWEB_JS_MIN = static/gitweb.min.js
+ifdef JSMIN
+GITWEB_JS = $(GITWEB_JS_MIN)
+GITWEB_ALL += $(MAK_DIR_GITWEB)$(GITWEB_JS_MIN)
+$(MAK_DIR_GITWEB)$(GITWEB_JS_MIN): $(MAK_DIR_GITWEB)GITWEB-BUILD-OPTIONS
+$(MAK_DIR_GITWEB)$(GITWEB_JS_MIN): $(MAK_DIR_GITWEB)$(GITWEB_JS_IN)
+       $(QUIET_GEN)$(JSMIN) <$< >$@
+endif
+GITWEB_FILES += $(GITWEB_JS)
+
+GITWEB_CSS_MIN = static/gitweb.min.css
+ifdef CSSMIN
+GITWEB_CSS = $(GITWEB_CSS_MIN)
+GITWEB_ALL += $(MAK_DIR_GITWEB)$(GITWEB_CSS_MIN)
+$(MAK_DIR_GITWEB)$(GITWEB_CSS_MIN): $(MAK_DIR_GITWEB)GITWEB-BUILD-OPTIONS
+$(MAK_DIR_GITWEB)$(GITWEB_CSS_MIN): $(MAK_DIR_GITWEB)$(GITWEB_CSS_IN)
+       $(QUIET_GEN)$(CSSMIN) <$< >$@
+endif
+GITWEB_FILES += $(GITWEB_CSS)
+
+GITWEB_FILES += static/git-logo.png static/git-favicon.png
+
+# JavaScript files that are composed (concatenated) to form gitweb.js
+#
+# js/lib/common-lib.js should be always first, then js/lib/*.js,
+# then the rest of files; js/gitweb.js should be last (if it exists)
+GITWEB_JSLIB_FILES =
+GITWEB_JSLIB_FILES += static/js/lib/common-lib.js
+GITWEB_JSLIB_FILES += static/js/lib/datetime.js
+GITWEB_JSLIB_FILES += static/js/lib/cookies.js
+GITWEB_JSLIB_FILES += static/js/javascript-detection.js
+GITWEB_JSLIB_FILES += static/js/adjust-timezone.js
+GITWEB_JSLIB_FILES += static/js/blame_incremental.js
+
+.PHONY: FORCE
+$(MAK_DIR_GITWEB)GITWEB-BUILD-OPTIONS: FORCE
+       @sed -e 's|@PERL_PATH@|$(PERL_PATH_SQ)|' \
+            -e 's|@JSMIN@|$(JSMIN)|' \
+            -e 's|@CSSMIN@|$(CSSMIN)|' \
+            -e 's|@GIT_VERSION@|$(GIT_VERSION)|' \
+            -e 's|@GIT_BINDIR@|$(bindir)|' \
+            -e 's|@GITWEB_CONFIG@|$(GITWEB_CONFIG)|' \
+            -e 's|@GITWEB_CONFIG_SYSTEM@|$(GITWEB_CONFIG_SYSTEM)|' \
+            -e 's|@GITWEB_CONFIG_COMMON@|$(GITWEB_CONFIG_COMMON)|' \
+            -e 's|@GITWEB_HOME_LINK_STR@|$(GITWEB_HOME_LINK_STR)|' \
+            -e 's|@GITWEB_SITENAME@|$(GITWEB_SITENAME)|' \
+            -e 's|@GITWEB_PROJECTROOT@|$(GITWEB_PROJECTROOT)|' \
+            -e 's|@GITWEB_PROJECT_MAXDEPTH@|$(GITWEB_PROJECT_MAXDEPTH)|' \
+            -e 's|@GITWEB_EXPORT_OK@|$(GITWEB_EXPORT_OK)|' \
+            -e 's|@GITWEB_STRICT_EXPORT@|$(GITWEB_STRICT_EXPORT)|' \
+            -e 's|@GITWEB_BASE_URL@|$(GITWEB_BASE_URL)|' \
+            -e 's|@GITWEB_LIST@|$(GITWEB_LIST)|' \
+            -e 's|@GITWEB_HOMETEXT@|$(GITWEB_HOMETEXT)|' \
+            -e 's|@GITWEB_CSS@|$(GITWEB_CSS)|' \
+            -e 's|@GITWEB_LOGO@|$(GITWEB_LOGO)|' \
+            -e 's|@GITWEB_FAVICON@|$(GITWEB_FAVICON)|' \
+            -e 's|@GITWEB_JS@|$(GITWEB_JS)|' \
+            -e 's|@GITWEB_SITE_HTML_HEAD_STRING@|$(GITWEB_SITE_HTML_HEAD_STRING)|' \
+            -e 's|@GITWEB_SITE_HEADER@|$(GITWEB_SITE_HEADER)|' \
+            -e 's|@GITWEB_SITE_FOOTER@|$(GITWEB_SITE_FOOTER)|' \
+            -e 's|@HIGHLIGHT_BIN@|$(HIGHLIGHT_BIN)|' \
+            $(MAK_DIR_GITWEB)GITWEB-BUILD-OPTIONS.in >"$@+"
+       @cmp -s $@+ $@ && rm -f $@+ || mv -f $@+ $@
+
+$(MAK_DIR_GITWEB)gitweb.cgi: $(MAK_DIR_GITWEB)generate-gitweb-cgi.sh
+$(MAK_DIR_GITWEB)gitweb.cgi: $(MAK_DIR_GITWEB)GITWEB-BUILD-OPTIONS
+$(MAK_DIR_GITWEB)gitweb.cgi: GIT-VERSION-FILE
+$(MAK_DIR_GITWEB)gitweb.cgi: $(MAK_DIR_GITWEB)gitweb.perl
+       $(QUIET_GEN)$(RM) $@ $@+ && \
+       $(MAK_DIR_GITWEB)generate-gitweb-cgi.sh $(MAK_DIR_GITWEB)/GITWEB-BUILD-OPTIONS ./GIT-VERSION-FILE $< $@+ && \
+       mv $@+ $@
+
+$(MAK_DIR_GITWEB)static/gitweb.js: $(MAK_DIR_GITWEB)generate-gitweb-js.sh
+$(MAK_DIR_GITWEB)static/gitweb.js: $(addprefix $(MAK_DIR_GITWEB),$(GITWEB_JSLIB_FILES))
+       $(QUIET_GEN)$(RM) $@ $@+ && \
+       $(MAK_DIR_GITWEB)generate-gitweb-js.sh $@+ $(filter %.js,$^) && \
+       mv $@+ $@
+
+### Installation rules
+
+.PHONY: install-gitweb
+install-gitweb: $(MAK_DIR_GITWEB_ALL)
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(gitwebdir_SQ)'
+       $(INSTALL) -m 755 $(addprefix $(MAK_DIR_GITWEB),$(GITWEB_PROGRAMS)) '$(DESTDIR_SQ)$(gitwebdir_SQ)'
+       $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(gitwebstaticdir_SQ)'
+       $(INSTALL) -m 644 $(addprefix $(MAK_DIR_GITWEB),$(GITWEB_FILES)) \
+               '$(DESTDIR_SQ)$(gitwebstaticdir_SQ)'
+ifndef NO_GITWEB
+ifndef NO_PERL
+install: install-gitweb
+endif
+endif
+
+### Cleaning rules
+
+.PHONY: gitweb-clean
+gitweb-clean:
+       $(RM) $(addprefix $(MAK_DIR_GITWEB),gitweb.cgi $(GITWEB_JS_IN) \
+               $(GITWEB_JS_MIN) $(GITWEB_CSS_MIN) \
+               GITWEB-BUILD-OPTIONS)
+clean: gitweb-clean
diff --git a/gitweb/README b/gitweb/README
new file mode 100644 (file)
index 0000000..471dcfb
--- /dev/null
@@ -0,0 +1,70 @@
+GIT web Interface
+=================
+
+From the git version 1.4.0 gitweb is bundled with git.
+
+
+Build time gitweb configuration
+-------------------------------
+There are many configuration variables which affect building gitweb (among
+others creating gitweb.cgi out of gitweb.perl by replacing placeholders such
+as `++GIT_BINDIR++` by their build-time values).
+
+Building and installing gitweb is described in gitweb's INSTALL file
+(in 'gitweb/INSTALL').
+
+
+Runtime gitweb configuration
+----------------------------
+Gitweb obtains configuration data from the following sources in the
+following order:
+
+1. built-in values (some set during build stage),
+2. common system-wide configuration file (`GITWEB_CONFIG_COMMON`,
+   defaults to '/etc/gitweb-common.conf'),
+3. either per-instance configuration file (`GITWEB_CONFIG`, defaults to
+   'gitweb_config.perl' in the same directory as the installed gitweb),
+   or if it does not exists then system-wide configuration file
+   (`GITWEB_CONFIG_SYSTEM`, defaults to '/etc/gitweb.conf').
+
+Values obtained in later configuration files override values obtained earlier
+in above sequence.
+
+You can read defaults in system-wide GITWEB_CONFIG_SYSTEM from GITWEB_CONFIG
+by adding
+
+  read_config_file($GITWEB_CONFIG_SYSTEM);
+
+at very beginning of per-instance GITWEB_CONFIG file.  In this case
+settings in said per-instance file will override settings from
+system-wide configuration file.  Note that read_config_file checks
+itself that the $GITWEB_CONFIG_SYSTEM file exists.
+
+The most notable thing that is not configurable at compile time are the
+optional features, stored in the '%features' variable.
+
+Ultimate description on how to reconfigure the default features setting
+in your `GITWEB_CONFIG` or per-project in `project.git/config` can be found
+as comments inside 'gitweb.cgi'.
+
+See also gitweb.conf(5) manpage.
+
+
+Web server configuration
+------------------------
+Gitweb can be run as CGI script, as legacy mod_perl application (using
+ModPerl::Registry), and as FastCGI script.  You can find some simple examples
+in "Example web server configuration" section in INSTALL file for gitweb (in
+gitweb/INSTALL).
+
+See "Webserver configuration" and "Advanced web server setup" sections in
+gitweb(1) manpage.
+
+
+AUTHORS
+-------
+Originally written by:
+  Kay Sievers <kay.sievers@vrfy.org>
+
+Any comment/question/concern to:
+  Git mailing list <git@vger.kernel.org>
diff --git a/gitweb/generate-gitweb-cgi.sh b/gitweb/generate-gitweb-cgi.sh
new file mode 100755 (executable)
index 0000000..ede9038
--- /dev/null
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+set -e
+
+if test $# -ne 4
+then
+       echo >&2 "USAGE: $0 <GITWEB-BUILD-OPTIONS> <GIT-VERSION-FILE> <INPUT> <OUTPUT>"
+       exit 1
+fi
+
+GITWEB_BUILD_OPTIONS="$1"
+GIT_VERSION_FILE="$2"
+INPUT="$3"
+OUTPUT="$4"
+
+. "$GITWEB_BUILD_OPTIONS"
+. "$GIT_VERSION_FILE"
+
+sed -e "1s|#!/usr/bin/perl|#!$PERL_PATH|" \
+    -e "s|@PERL_PATH@|$PERL_PATH|" \
+    -e "s|@JSMIN@|$JSMIN|" \
+    -e "s|@CSSMIN@|$CSSMIN|" \
+    -e "s|@GIT_VERSION@|$GIT_VERSION|" \
+    -e "s|@GIT_BINDIR@|$GIT_BINDIR|" \
+    -e "s|@GITWEB_CONFIG@|$GITWEB_CONFIG|" \
+    -e "s|@GITWEB_CONFIG_SYSTEM@|$GITWEB_CONFIG_SYSTEM|" \
+    -e "s|@GITWEB_CONFIG_COMMON@|$GITWEB_CONFIG_COMMON|" \
+    -e "s|@GITWEB_HOME_LINK_STR@|$GITWEB_HOME_LINK_STR|" \
+    -e "s|@GITWEB_SITENAME@|$GITWEB_SITENAME|" \
+    -e "s|@GITWEB_PROJECTROOT@|$GITWEB_PROJECTROOT|" \
+    -e "s|@GITWEB_PROJECT_MAXDEPTH@|$GITWEB_PROJECT_MAXDEPTH|" \
+    -e "s|@GITWEB_EXPORT_OK@|$GITWEB_EXPORT_OK|" \
+    -e "s|@GITWEB_STRICT_EXPORT@|$GITWEB_STRICT_EXPORT|" \
+    -e "s|@GITWEB_BASE_URL@|$GITWEB_BASE_URL|" \
+    -e "s|@GITWEB_LIST@|$GITWEB_LIST|" \
+    -e "s|@GITWEB_HOMETEXT@|$GITWEB_HOMETEXT|" \
+    -e "s|@GITWEB_CSS@|$GITWEB_CSS|" \
+    -e "s|@GITWEB_LOGO@|$GITWEB_LOGO|" \
+    -e "s|@GITWEB_FAVICON@|$GITWEB_FAVICON|" \
+    -e "s|@GITWEB_JS@|$GITWEB_JS|" \
+    -e "s|@GITWEB_SITE_HTML_HEAD_STRING@|$GITWEB_SITE_HTML_HEAD_STRING|" \
+    -e "s|@GITWEB_SITE_HEADER@|$GITWEB_SITE_HEADER|" \
+    -e "s|@GITWEB_SITE_FOOTER@|$GITWEB_SITE_FOOTER|" \
+    -e "s|@HIGHLIGHT_BIN@|$HIGHLIGHT_BIN|" \
+    "$INPUT" >"$OUTPUT"
+
+chmod a+x "$OUTPUT"
diff --git a/gitweb/generate-gitweb-js.sh b/gitweb/generate-gitweb-js.sh
new file mode 100755 (executable)
index 0000000..01bb22b
--- /dev/null
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if test "$#" -lt 2
+then
+       echo >&2 "USAGE: $0 <OUTPUT> <INPUT>..."
+       exit 1
+fi
+
+OUTPUT="$1"
+shift
+
+cat "$@" >"$OUTPUT"
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
new file mode 100755 (executable)
index 0000000..b5490df
--- /dev/null
@@ -0,0 +1,8490 @@
+#!/usr/bin/perl
+
+# gitweb - simple web interface to track changes in git repositories
+#
+# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
+# (C) 2005, Christian Gierke
+#
+# This program is licensed under the GPLv2
+
+require v5.26;
+use strict;
+use warnings;
+# handle ACL in file access tests
+use filetest 'access';
+use CGI qw(:standard :escapeHTML -nosticky);
+use CGI::Util qw(unescape);
+use CGI::Carp qw(fatalsToBrowser set_message);
+use Encode;
+use Fcntl ':mode';
+use File::Find qw();
+use File::Basename qw(basename);
+use Time::HiRes qw(gettimeofday tv_interval);
+use Digest::MD5 qw(md5_hex);
+
+binmode STDOUT, ':utf8';
+
+if (!defined($CGI::VERSION) || $CGI::VERSION < 4.08) {
+       eval 'sub CGI::multi_param { CGI::param(@_) }'
+}
+
+our $t0 = [ gettimeofday() ];
+our $number_of_git_cmds = 0;
+
+BEGIN {
+       CGI->compile() if $ENV{'MOD_PERL'};
+}
+
+our $version = "@GIT_VERSION@";
+
+our ($my_url, $my_uri, $base_url, $path_info, $home_link);
+sub evaluate_uri {
+       our $cgi;
+
+       our $my_url = $cgi->url();
+       our $my_uri = $cgi->url(-absolute => 1);
+
+       # Base URL for relative URLs in gitweb ($logo, $favicon, ...),
+       # needed and used only for URLs with nonempty PATH_INFO
+       our $base_url = $my_url;
+
+       # When the script is used as DirectoryIndex, the URL does not contain the name
+       # of the script file itself, and $cgi->url() fails to strip PATH_INFO, so we
+       # have to do it ourselves. We make $path_info global because it's also used
+       # later on.
+       #
+       # Another issue with the script being the DirectoryIndex is that the resulting
+       # $my_url data is not the full script URL: this is good, because we want
+       # generated links to keep implying the script name if it wasn't explicitly
+       # indicated in the URL we're handling, but it means that $my_url cannot be used
+       # as base URL.
+       # Therefore, if we needed to strip PATH_INFO, then we know that we have
+       # to build the base URL ourselves:
+       our $path_info = decode_utf8($ENV{"PATH_INFO"});
+       if ($path_info) {
+               # $path_info has already been URL-decoded by the web server, but
+               # $my_url and $my_uri have not. URL-decode them so we can properly
+               # strip $path_info.
+               $my_url = unescape($my_url);
+               $my_uri = unescape($my_uri);
+               if ($my_url =~ s,\Q$path_info\E$,, &&
+                   $my_uri =~ s,\Q$path_info\E$,, &&
+                   defined $ENV{'SCRIPT_NAME'}) {
+                       $base_url = $cgi->url(-base => 1) . $ENV{'SCRIPT_NAME'};
+               }
+       }
+
+       # target of the home link on top of all pages
+       our $home_link = $my_uri || "/";
+}
+
+# core git executable to use
+# this can just be "git" if your webserver has a sensible PATH
+our $GIT = "@GIT_BINDIR@/git";
+
+# absolute fs-path which will be prepended to the project path
+#our $projectroot = "/pub/scm";
+our $projectroot = "@GITWEB_PROJECTROOT@";
+
+# fs traversing limit for getting project list
+# the number is relative to the projectroot
+our $project_maxdepth = @GITWEB_PROJECT_MAXDEPTH@;
+
+# string of the home link on top of all pages
+our $home_link_str = "@GITWEB_HOME_LINK_STR@";
+
+# extra breadcrumbs preceding the home link
+our @extra_breadcrumbs = ();
+
+# name of your site or organization to appear in page titles
+# replace this with something more descriptive for clearer bookmarks
+our $site_name = "@GITWEB_SITENAME@"
+                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
+
+# html snippet to include in the <head> section of each page
+our $site_html_head_string = "@GITWEB_SITE_HTML_HEAD_STRING@";
+# filename of html text to include at top of each page
+our $site_header = "@GITWEB_SITE_HEADER@";
+# html text to include at home page
+our $home_text = "@GITWEB_HOMETEXT@";
+# filename of html text to include at bottom of each page
+our $site_footer = "@GITWEB_SITE_FOOTER@";
+
+# URI of stylesheets
+our @stylesheets = ("@GITWEB_CSS@");
+# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
+our $stylesheet = undef;
+# URI of GIT logo (72x27 size)
+our $logo = "@GITWEB_LOGO@";
+# URI of GIT favicon, assumed to be image/png type
+our $favicon = "@GITWEB_FAVICON@";
+# URI of gitweb.js (JavaScript code for gitweb)
+our $javascript = "@GITWEB_JS@";
+
+# URI and label (title) of GIT logo link
+#our $logo_url = "https://www.kernel.org/pub/software/scm/git/docs/";
+#our $logo_label = "git documentation";
+our $logo_url = "https://git-scm.com/";
+our $logo_label = "git homepage";
+
+# source of projects list
+our $projects_list = "@GITWEB_LIST@";
+
+# the width (in characters) of the projects list "Description" column
+our $projects_list_description_width = 25;
+
+# group projects by category on the projects list
+# (enabled if this variable evaluates to true)
+our $projects_list_group_categories = 0;
+
+# default category if none specified
+# (leave the empty string for no category)
+our $project_list_default_category = "";
+
+# default order of projects list
+# valid values are none, project, descr, owner, and age
+our $default_projects_order = "project";
+
+# show repository only if this file exists
+# (only effective if this variable evaluates to true)
+our $export_ok = "@GITWEB_EXPORT_OK@";
+
+# don't generate age column on the projects list page
+our $omit_age_column = 0;
+
+# don't generate information about owners of repositories
+our $omit_owner=0;
+
+# show repository only if this subroutine returns true
+# when given the path to the project, for example:
+#    sub { return -e "$_[0]/git-daemon-export-ok"; }
+our $export_auth_hook = undef;
+
+# only allow viewing of repositories also shown on the overview page
+our $strict_export = "@GITWEB_STRICT_EXPORT@";
+
+# list of git base URLs used for URL to where fetch project from,
+# i.e. full URL is "$git_base_url/$project"
+our @git_base_url_list = grep { $_ ne '' } ("@GITWEB_BASE_URL@");
+
+# default blob_plain mimetype and default charset for text/plain blob
+our $default_blob_plain_mimetype = 'text/plain';
+our $default_text_plain_charset  = undef;
+
+# file to use for guessing MIME types before trying /etc/mime.types
+# (relative to the current git repository)
+our $mimetypes_file = undef;
+
+# assume this charset if line contains non-UTF-8 characters;
+# it should be valid encoding (see Encoding::Supported(3pm) for list),
+# for which encoding all byte sequences are valid, for example
+# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
+# could be even 'utf-8' for the old behavior)
+our $fallback_encoding = 'latin1';
+
+# rename detection options for git-diff and git-diff-tree
+# - default is '-M', with the cost proportional to
+#   (number of removed files) * (number of new files).
+# - more costly is '-C' (which implies '-M'), with the cost proportional to
+#   (number of changed files + number of removed files) * (number of new files)
+# - even more costly is '-C', '--find-copies-harder' with cost
+#   (number of files in the original tree) * (number of new files)
+# - one might want to include '-B' option, e.g. '-B', '-M'
+our @diff_opts = ('-M'); # taken from git_commit
+
+# Disables features that would allow repository owners to inject script into
+# the gitweb domain.
+our $prevent_xss = 0;
+
+# Path to the highlight executable to use (must be the one from
+# http://andre-simon.de/zip/download.php due to assumptions about parameters and output).
+# Useful if highlight is not installed on your webserver's PATH.
+# [Default: highlight]
+our $highlight_bin = "@HIGHLIGHT_BIN@";
+
+# information about snapshot formats that gitweb is capable of serving
+our %known_snapshot_formats = (
+       # name => {
+       #       'display' => display name,
+       #       'type' => mime type,
+       #       'suffix' => filename suffix,
+       #       'format' => --format for git-archive,
+       #       'compressor' => [compressor command and arguments]
+       #                       (array reference, optional)
+       #       'disabled' => boolean (optional)}
+       #
+       'tgz' => {
+               'display' => 'tar.gz',
+               'type' => 'application/x-gzip',
+               'suffix' => '.tar.gz',
+               'format' => 'tar',
+               'compressor' => ['gzip', '-n']},
+
+       'tbz2' => {
+               'display' => 'tar.bz2',
+               'type' => 'application/x-bzip2',
+               'suffix' => '.tar.bz2',
+               'format' => 'tar',
+               'compressor' => ['bzip2']},
+
+       'txz' => {
+               'display' => 'tar.xz',
+               'type' => 'application/x-xz',
+               'suffix' => '.tar.xz',
+               'format' => 'tar',
+               'compressor' => ['xz'],
+               'disabled' => 1},
+
+       'zip' => {
+               'display' => 'zip',
+               'type' => 'application/x-zip',
+               'suffix' => '.zip',
+               'format' => 'zip'},
+);
+
+# Aliases so we understand old gitweb.snapshot values in repository
+# configuration.
+our %known_snapshot_format_aliases = (
+       'gzip'  => 'tgz',
+       'bzip2' => 'tbz2',
+       'xz'    => 'txz',
+
+       # backward compatibility: legacy gitweb config support
+       'x-gzip' => undef, 'gz' => undef,
+       'x-bzip2' => undef, 'bz2' => undef,
+       'x-zip' => undef, '' => undef,
+);
+
+# Pixel sizes for icons and avatars. If the default font sizes or lineheights
+# are changed, it may be appropriate to change these values too via
+# $GITWEB_CONFIG.
+our %avatar_size = (
+       'default' => 16,
+       'double'  => 32
+);
+
+# Used to set the maximum load that we will still respond to gitweb queries.
+# If server load exceed this value then return "503 server busy" error.
+# If gitweb cannot determined server load, it is taken to be 0.
+# Leave it undefined (or set to 'undef') to turn off load checking.
+our $maxload = 300;
+
+# configuration for 'highlight' (http://andre-simon.de/doku/highlight/en/highlight.php)
+# match by basename
+our %highlight_basename = (
+       #'Program' => 'py',
+       #'Library' => 'py',
+       'SConstruct' => 'py', # SCons equivalent of Makefile
+       'Makefile' => 'make',
+);
+# match by extension
+our %highlight_ext = (
+       # main extensions, defining name of syntax;
+       # see files in /usr/share/highlight/langDefs/ directory
+       (map { $_ => $_ } qw(py rb java css js tex bib xml awk bat ini spec tcl sql)),
+       # alternate extensions, see /etc/highlight/filetypes.conf
+       (map { $_ => 'c'   } qw(c h)),
+       (map { $_ => 'sh'  } qw(sh bash zsh ksh)),
+       (map { $_ => 'cpp' } qw(cpp cxx c++ cc)),
+       (map { $_ => 'php' } qw(php php3 php4 php5 phps)),
+       (map { $_ => 'pl'  } qw(pl perl pm)), # perhaps also 'cgi'
+       (map { $_ => 'make'} qw(make mak mk)),
+       (map { $_ => 'xml' } qw(xml xhtml html htm)),
+);
+
+# You define site-wide feature defaults here; override them with
+# $GITWEB_CONFIG as necessary.
+our %feature = (
+       # feature => {
+       #       'sub' => feature-sub (subroutine),
+       #       'override' => allow-override (boolean),
+       #       'default' => [ default options...] (array reference)}
+       #
+       # if feature is overridable (it means that allow-override has true value),
+       # then feature-sub will be called with default options as parameters;
+       # return value of feature-sub indicates if to enable specified feature
+       #
+       # if there is no 'sub' key (no feature-sub), then feature cannot be
+       # overridden
+       #
+       # use gitweb_get_feature(<feature>) to retrieve the <feature> value
+       # (an array) or gitweb_check_feature(<feature>) to check if <feature>
+       # is enabled
+
+       # Enable the 'blame' blob view, showing the last commit that modified
+       # each line in the file. This can be very CPU-intensive.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'blame'}{'default'} = [1];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'blame'}{'override'} = 1;
+       # and in project config gitweb.blame = 0|1;
+       'blame' => {
+               'sub' => sub { feature_bool('blame', @_) },
+               'override' => 0,
+               'default' => [0]},
+
+       # Enable the 'snapshot' link, providing a compressed archive of any
+       # tree. This can potentially generate high traffic if you have large
+       # project.
+
+       # Value is a list of formats defined in %known_snapshot_formats that
+       # you wish to offer.
+       # To disable system wide have in $GITWEB_CONFIG
+       # $feature{'snapshot'}{'default'} = [];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'snapshot'}{'override'} = 1;
+       # and in project config, a comma-separated list of formats or "none"
+       # to disable.  Example: gitweb.snapshot = tbz2,zip;
+       'snapshot' => {
+               'sub' => \&feature_snapshot,
+               'override' => 0,
+               'default' => ['tgz']},
+
+       # Enable text search, which will list the commits which match author,
+       # committer or commit text to a given string.  Enabled by default.
+       # Project specific override is not supported.
+       #
+       # Note that this controls all search features, which means that if
+       # it is disabled, then 'grep' and 'pickaxe' search would also be
+       # disabled.
+       'search' => {
+               'override' => 0,
+               'default' => [1]},
+
+       # Enable grep search, which will list the files in currently selected
+       # tree containing the given string. Enabled by default. This can be
+       # potentially CPU-intensive, of course.
+       # Note that you need to have 'search' feature enabled too.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'grep'}{'default'} = [1];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'grep'}{'override'} = 1;
+       # and in project config gitweb.grep = 0|1;
+       'grep' => {
+               'sub' => sub { feature_bool('grep', @_) },
+               'override' => 0,
+               'default' => [1]},
+
+       # Enable the pickaxe search, which will list the commits that modified
+       # a given string in a file. This can be practical and quite faster
+       # alternative to 'blame', but still potentially CPU-intensive.
+       # Note that you need to have 'search' feature enabled too.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'pickaxe'}{'default'} = [1];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'pickaxe'}{'override'} = 1;
+       # and in project config gitweb.pickaxe = 0|1;
+       'pickaxe' => {
+               'sub' => sub { feature_bool('pickaxe', @_) },
+               'override' => 0,
+               'default' => [1]},
+
+       # Enable showing size of blobs in a 'tree' view, in a separate
+       # column, similar to what 'ls -l' does.  This cost a bit of IO.
+
+       # To disable system wide have in $GITWEB_CONFIG
+       # $feature{'show-sizes'}{'default'} = [0];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'show-sizes'}{'override'} = 1;
+       # and in project config gitweb.showsizes = 0|1;
+       'show-sizes' => {
+               'sub' => sub { feature_bool('showsizes', @_) },
+               'override' => 0,
+               'default' => [1]},
+
+       # Make gitweb use an alternative format of the URLs which can be
+       # more readable and natural-looking: project name is embedded
+       # directly in the path and the query string contains other
+       # auxiliary information. All gitweb installations recognize
+       # URL in either format; this configures in which formats gitweb
+       # generates links.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'pathinfo'}{'default'} = [1];
+       # Project specific override is not supported.
+
+       # Note that you will need to change the default location of CSS,
+       # favicon, logo and possibly other files to an absolute URL. Also,
+       # if gitweb.cgi serves as your indexfile, you will need to force
+       # $my_uri to contain the script name in your $GITWEB_CONFIG.
+       'pathinfo' => {
+               'override' => 0,
+               'default' => [0]},
+
+       # Make gitweb consider projects in project root subdirectories
+       # to be forks of existing projects. Given project $projname.git,
+       # projects matching $projname/*.git will not be shown in the main
+       # projects list, instead a '+' mark will be added to $projname
+       # there and a 'forks' view will be enabled for the project, listing
+       # all the forks. If project list is taken from a file, forks have
+       # to be listed after the main project.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'forks'}{'default'} = [1];
+       # Project specific override is not supported.
+       'forks' => {
+               'override' => 0,
+               'default' => [0]},
+
+       # Insert custom links to the action bar of all project pages.
+       # This enables you mainly to link to third-party scripts integrating
+       # into gitweb; e.g. git-browser for graphical history representation
+       # or custom web-based repository administration interface.
+
+       # The 'default' value consists of a list of triplets in the form
+       # (label, link, position) where position is the label after which
+       # to insert the link and link is a format string where %n expands
+       # to the project name, %f to the project path within the filesystem,
+       # %h to the current hash (h gitweb parameter) and %b to the current
+       # hash base (hb gitweb parameter); %% expands to %.
+
+       # To enable system wide have in $GITWEB_CONFIG e.g.
+       # $feature{'actions'}{'default'} = [('graphiclog',
+       #       '/git-browser/by-commit.html?r=%n', 'summary')];
+       # Project specific override is not supported.
+       'actions' => {
+               'override' => 0,
+               'default' => []},
+
+       # Allow gitweb scan project content tags of project repository,
+       # and display the popular Web 2.0-ish "tag cloud" near the projects
+       # list.  Note that this is something COMPLETELY different from the
+       # normal Git tags.
+
+       # gitweb by itself can show existing tags, but it does not handle
+       # tagging itself; you need to do it externally, outside gitweb.
+       # The format is described in git_get_project_ctags() subroutine.
+       # You may want to install the HTML::TagCloud Perl module to get
+       # a pretty tag cloud instead of just a list of tags.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'ctags'}{'default'} = [1];
+       # Project specific override is not supported.
+
+       # In the future whether ctags editing is enabled might depend
+       # on the value, but using 1 should always mean no editing of ctags.
+       'ctags' => {
+               'override' => 0,
+               'default' => [0]},
+
+       # The maximum number of patches in a patchset generated in patch
+       # view. Set this to 0 or undef to disable patch view, or to a
+       # negative number to remove any limit.
+
+       # To disable system wide have in $GITWEB_CONFIG
+       # $feature{'patches'}{'default'} = [0];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'patches'}{'override'} = 1;
+       # and in project config gitweb.patches = 0|n;
+       # where n is the maximum number of patches allowed in a patchset.
+       'patches' => {
+               'sub' => \&feature_patches,
+               'override' => 0,
+               'default' => [16]},
+
+       # Avatar support. When this feature is enabled, views such as
+       # shortlog or commit will display an avatar associated with
+       # the email of the committer(s) and/or author(s).
+
+       # Currently available providers are gravatar and picon.
+       # If an unknown provider is specified, the feature is disabled.
+
+       # Picon currently relies on the indiana.edu database.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'avatar'}{'default'} = ['<provider>'];
+       # where <provider> is either gravatar or picon.
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'avatar'}{'override'} = 1;
+       # and in project config gitweb.avatar = <provider>;
+       'avatar' => {
+               'sub' => \&feature_avatar,
+               'override' => 0,
+               'default' => ['']},
+
+       # Enable displaying how much time and how many git commands
+       # it took to generate and display page.  Disabled by default.
+       # Project specific override is not supported.
+       'timed' => {
+               'override' => 0,
+               'default' => [0]},
+
+       # Enable turning some links into links to actions which require
+       # JavaScript to run (like 'blame_incremental').  Not enabled by
+       # default.  Project specific override is currently not supported.
+       'javascript-actions' => {
+               'override' => 0,
+               'default' => [0]},
+
+       # Enable and configure ability to change common timezone for dates
+       # in gitweb output via JavaScript.  Enabled by default.
+       # Project specific override is not supported.
+       'javascript-timezone' => {
+               'override' => 0,
+               'default' => [
+                       'local',     # default timezone: 'utc', 'local', or '(-|+)HHMM' format,
+                                    # or undef to turn off this feature
+                       'gitweb_tz', # name of cookie where to store selected timezone
+                       'datetime',  # CSS class used to mark up dates for manipulation
+               ]},
+
+       # Syntax highlighting support. This is based on Daniel Svensson's
+       # and Sham Chukoury's work in gitweb-xmms2.git.
+       # It requires the 'highlight' program present in $PATH,
+       # and therefore is disabled by default.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'highlight'}{'default'} = [1];
+
+       'highlight' => {
+               'sub' => sub { feature_bool('highlight', @_) },
+               'override' => 0,
+               'default' => [0]},
+
+       # Enable displaying of remote heads in the heads list
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'remote_heads'}{'default'} = [1];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'remote_heads'}{'override'} = 1;
+       # and in project config gitweb.remoteheads = 0|1;
+       'remote_heads' => {
+               'sub' => sub { feature_bool('remote_heads', @_) },
+               'override' => 0,
+               'default' => [0]},
+
+       # Enable showing branches under other refs in addition to heads
+
+       # To set system wide extra branch refs have in $GITWEB_CONFIG
+       # $feature{'extra-branch-refs'}{'default'} = ['dirs', 'of', 'choice'];
+       # To have project specific config enable override in $GITWEB_CONFIG
+       # $feature{'extra-branch-refs'}{'override'} = 1;
+       # and in project config gitweb.extrabranchrefs = dirs of choice
+       # Every directory is separated with whitespace.
+
+       'extra-branch-refs' => {
+               'sub' => \&feature_extra_branch_refs,
+               'override' => 0,
+               'default' => []},
+
+       # Redact e-mail addresses.
+
+       # To enable system wide have in $GITWEB_CONFIG
+       # $feature{'email-privacy'}{'default'} = [1];
+       'email-privacy' => {
+               'sub' => sub { feature_bool('email-privacy', @_) },
+               'override' => 1,
+               'default' => [0]},
+);
+
+sub gitweb_get_feature {
+       my ($name) = @_;
+       return unless exists $feature{$name};
+       my ($sub, $override, @defaults) = (
+               $feature{$name}{'sub'},
+               $feature{$name}{'override'},
+               @{$feature{$name}{'default'}});
+       # project specific override is possible only if we have project
+       our $git_dir; # global variable, declared later
+       if (!$override || !defined $git_dir) {
+               return @defaults;
+       }
+       if (!defined $sub) {
+               warn "feature $name is not overridable";
+               return @defaults;
+       }
+       return $sub->(@defaults);
+}
+
+# A wrapper to check if a given feature is enabled.
+# With this, you can say
+#
+#   my $bool_feat = gitweb_check_feature('bool_feat');
+#   gitweb_check_feature('bool_feat') or somecode;
+#
+# instead of
+#
+#   my ($bool_feat) = gitweb_get_feature('bool_feat');
+#   (gitweb_get_feature('bool_feat'))[0] or somecode;
+#
+sub gitweb_check_feature {
+       return (gitweb_get_feature(@_))[0];
+}
+
+
+sub feature_bool {
+       my $key = shift;
+       my ($val) = git_get_project_config($key, '--bool');
+
+       if (!defined $val) {
+               return ($_[0]);
+       } elsif ($val eq 'true') {
+               return (1);
+       } elsif ($val eq 'false') {
+               return (0);
+       }
+}
+
+sub feature_snapshot {
+       my (@fmts) = @_;
+
+       my ($val) = git_get_project_config('snapshot');
+
+       if ($val) {
+               @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
+       }
+
+       return @fmts;
+}
+
+sub feature_patches {
+       my @val = (git_get_project_config('patches', '--int'));
+
+       if (@val) {
+               return @val;
+       }
+
+       return ($_[0]);
+}
+
+sub feature_avatar {
+       my @val = (git_get_project_config('avatar'));
+
+       return @val ? @val : @_;
+}
+
+sub feature_extra_branch_refs {
+       my (@branch_refs) = @_;
+       my $values = git_get_project_config('extrabranchrefs');
+
+       if ($values) {
+               $values = config_to_multi ($values);
+               @branch_refs = ();
+               foreach my $value (@{$values}) {
+                       push @branch_refs, split /\s+/, $value;
+               }
+       }
+
+       return @branch_refs;
+}
+
+# checking HEAD file with -e is fragile if the repository was
+# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
+# and then pruned.
+sub check_head_link {
+       my ($dir) = @_;
+       my $headfile = "$dir/HEAD";
+       return ((-e $headfile) ||
+               (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
+}
+
+sub check_export_ok {
+       my ($dir) = @_;
+       return (check_head_link($dir) &&
+               (!$export_ok || -e "$dir/$export_ok") &&
+               (!$export_auth_hook || $export_auth_hook->($dir)));
+}
+
+# process alternate names for backward compatibility
+# filter out unsupported (unknown) snapshot formats
+sub filter_snapshot_fmts {
+       my @fmts = @_;
+
+       @fmts = map {
+               exists $known_snapshot_format_aliases{$_} ?
+                      $known_snapshot_format_aliases{$_} : $_} @fmts;
+       @fmts = grep {
+               exists $known_snapshot_formats{$_} &&
+               !$known_snapshot_formats{$_}{'disabled'}} @fmts;
+}
+
+sub filter_and_validate_refs {
+       my @refs = @_;
+       my %unique_refs = ();
+
+       foreach my $ref (@refs) {
+               die_error(500, "Invalid ref '$ref' in 'extra-branch-refs' feature") unless (is_valid_ref_format($ref));
+               # 'heads' are added implicitly in get_branch_refs().
+               $unique_refs{$ref} = 1 if ($ref ne 'heads');
+       }
+       return sort keys %unique_refs;
+}
+
+# If it is set to code reference, it is code that it is to be run once per
+# request, allowing updating configurations that change with each request,
+# while running other code in config file only once.
+#
+# Otherwise, if it is false then gitweb would process config file only once;
+# if it is true then gitweb config would be run for each request.
+our $per_request_config = 1;
+
+# read and parse gitweb config file given by its parameter.
+# returns true on success, false on recoverable error, allowing
+# to chain this subroutine, using first file that exists.
+# dies on errors during parsing config file, as it is unrecoverable.
+sub read_config_file {
+       my $filename = shift;
+       return unless defined $filename;
+       if (-e $filename) {
+               do $filename;
+               # die if there is a problem accessing the file
+               die $! if $!;
+               # die if there are errors parsing config file
+               die $@ if $@;
+               return 1;
+       }
+       return;
+}
+
+our ($GITWEB_CONFIG, $GITWEB_CONFIG_SYSTEM, $GITWEB_CONFIG_COMMON);
+sub evaluate_gitweb_config {
+       our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "@GITWEB_CONFIG@";
+       our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "@GITWEB_CONFIG_SYSTEM@";
+       our $GITWEB_CONFIG_COMMON = $ENV{'GITWEB_CONFIG_COMMON'} || "@GITWEB_CONFIG_COMMON@";
+
+       # Protect against duplications of file names, to not read config twice.
+       # Only one of $GITWEB_CONFIG and $GITWEB_CONFIG_SYSTEM is used, so
+       # there possibility of duplication of filename there doesn't matter.
+       $GITWEB_CONFIG = ""        if ($GITWEB_CONFIG eq $GITWEB_CONFIG_COMMON);
+       $GITWEB_CONFIG_SYSTEM = "" if ($GITWEB_CONFIG_SYSTEM eq $GITWEB_CONFIG_COMMON);
+
+       # Common system-wide settings for convenience.
+       # Those settings can be overridden by GITWEB_CONFIG or GITWEB_CONFIG_SYSTEM.
+       read_config_file($GITWEB_CONFIG_COMMON);
+
+       # Use first config file that exists.  This means use the per-instance
+       # GITWEB_CONFIG if exists, otherwise use GITWEB_SYSTEM_CONFIG.
+       read_config_file($GITWEB_CONFIG) and return;
+       read_config_file($GITWEB_CONFIG_SYSTEM);
+}
+
+# Get loadavg of system, to compare against $maxload.
+# Currently it requires '/proc/loadavg' present to get loadavg;
+# if it is not present it returns 0, which means no load checking.
+sub get_loadavg {
+       if( -e '/proc/loadavg' ){
+               open my $fd, '<', '/proc/loadavg'
+                       or return 0;
+               my @load = split(/\s+/, scalar <$fd>);
+               close $fd;
+
+               # The first three columns measure CPU and IO utilization of the last one,
+               # five, and 10 minute periods.  The fourth column shows the number of
+               # currently running processes and the total number of processes in the m/n
+               # format.  The last column displays the last process ID used.
+               return $load[0] || 0;
+       }
+       # additional checks for load average should go here for things that don't export
+       # /proc/loadavg
+
+       return 0;
+}
+
+# version of the core git binary
+our $git_version;
+sub evaluate_git_version {
+       our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
+       $number_of_git_cmds++;
+}
+
+sub check_loadavg {
+       if (defined $maxload && get_loadavg() > $maxload) {
+               die_error(503, "The load average on the server is too high");
+       }
+}
+
+# ======================================================================
+# input validation and dispatch
+
+# Various hash size-related values.
+my $sha1_len = 40;
+my $sha256_extra_len = 24;
+my $sha256_len = $sha1_len + $sha256_extra_len;
+
+# A regex matching $len hex characters. $len may be a range (e.g. 7,64).
+sub oid_nlen_regex {
+       my $len = shift;
+       my $hchr = qr/[0-9a-fA-F]/;
+       return qr/(?:(?:$hchr){$len})/;
+}
+
+# A regex matching two sets of $nlen hex characters, prefixed by the literal
+# string $prefix and with the literal string $infix between them.
+sub oid_nlen_prefix_infix_regex {
+       my $nlen = shift;
+       my $prefix = shift;
+       my $infix = shift;
+
+       my $rx = oid_nlen_regex($nlen);
+
+       return qr/^\Q$prefix\E$rx\Q$infix\E$rx$/;
+}
+
+# A regex matching a valid object ID.
+our $oid_regex;
+{
+       my $x = oid_nlen_regex($sha1_len);
+       my $y = oid_nlen_regex($sha256_extra_len);
+       $oid_regex = qr/(?:$x(?:$y)?)/;
+}
+
+# input parameters can be collected from a variety of sources (presently, CGI
+# and PATH_INFO), so we define an %input_params hash that collects them all
+# together during validation: this allows subsequent uses (e.g. href()) to be
+# agnostic of the parameter origin
+
+our %input_params = ();
+
+# input parameters are stored with the long parameter name as key. This will
+# also be used in the href subroutine to convert parameters to their CGI
+# equivalent, and since the href() usage is the most frequent one, we store
+# the name -> CGI key mapping here, instead of the reverse.
+#
+# XXX: Warning: If you touch this, check the search form for updating,
+# too.
+
+our @cgi_param_mapping = (
+       project => "p",
+       action => "a",
+       file_name => "f",
+       file_parent => "fp",
+       hash => "h",
+       hash_parent => "hp",
+       hash_base => "hb",
+       hash_parent_base => "hpb",
+       page => "pg",
+       order => "o",
+       searchtext => "s",
+       searchtype => "st",
+       snapshot_format => "sf",
+       extra_options => "opt",
+       search_use_regexp => "sr",
+       ctag => "by_tag",
+       diff_style => "ds",
+       project_filter => "pf",
+       # this must be last entry (for manipulation from JavaScript)
+       javascript => "js"
+);
+our %cgi_param_mapping = @cgi_param_mapping;
+
+# we will also need to know the possible actions, for validation
+our %actions = (
+       "blame" => \&git_blame,
+       "blame_incremental" => \&git_blame_incremental,
+       "blame_data" => \&git_blame_data,
+       "blobdiff" => \&git_blobdiff,
+       "blobdiff_plain" => \&git_blobdiff_plain,
+       "blob" => \&git_blob,
+       "blob_plain" => \&git_blob_plain,
+       "commitdiff" => \&git_commitdiff,
+       "commitdiff_plain" => \&git_commitdiff_plain,
+       "commit" => \&git_commit,
+       "forks" => \&git_forks,
+       "heads" => \&git_heads,
+       "history" => \&git_history,
+       "log" => \&git_log,
+       "patch" => \&git_patch,
+       "patches" => \&git_patches,
+       "remotes" => \&git_remotes,
+       "rss" => \&git_rss,
+       "atom" => \&git_atom,
+       "search" => \&git_search,
+       "search_help" => \&git_search_help,
+       "shortlog" => \&git_shortlog,
+       "summary" => \&git_summary,
+       "tag" => \&git_tag,
+       "tags" => \&git_tags,
+       "tree" => \&git_tree,
+       "snapshot" => \&git_snapshot,
+       "object" => \&git_object,
+       # those below don't need $project
+       "opml" => \&git_opml,
+       "project_list" => \&git_project_list,
+       "project_index" => \&git_project_index,
+);
+
+# finally, we have the hash of allowed extra_options for the commands that
+# allow them
+our %allowed_options = (
+       "--no-merges" => [ qw(rss atom log shortlog history) ],
+);
+
+# fill %input_params with the CGI parameters. All values except for 'opt'
+# should be single values, but opt can be an array. We should probably
+# build an array of parameters that can be multi-valued, but since for the time
+# being it's only this one, we just single it out
+sub evaluate_query_params {
+       our $cgi;
+
+       while (my ($name, $symbol) = each %cgi_param_mapping) {
+               if ($symbol eq 'opt') {
+                       $input_params{$name} = [ map { decode_utf8($_) } $cgi->multi_param($symbol) ];
+               } else {
+                       $input_params{$name} = decode_utf8($cgi->param($symbol));
+               }
+       }
+}
+
+# now read PATH_INFO and update the parameter list for missing parameters
+sub evaluate_path_info {
+       return if defined $input_params{'project'};
+       return if !$path_info;
+       $path_info =~ s,^/+,,;
+       return if !$path_info;
+
+       # find which part of PATH_INFO is project
+       my $project = $path_info;
+       $project =~ s,/+$,,;
+       while ($project && !check_head_link("$projectroot/$project")) {
+               $project =~ s,/*[^/]*$,,;
+       }
+       return unless $project;
+       $input_params{'project'} = $project;
+
+       # do not change any parameters if an action is given using the query string
+       return if $input_params{'action'};
+       $path_info =~ s,^\Q$project\E/*,,;
+
+       # next, check if we have an action
+       my $action = $path_info;
+       $action =~ s,/.*$,,;
+       if (exists $actions{$action}) {
+               $path_info =~ s,^$action/*,,;
+               $input_params{'action'} = $action;
+       }
+
+       # list of actions that want hash_base instead of hash, but can have no
+       # pathname (f) parameter
+       my @wants_base = (
+               'tree',
+               'history',
+       );
+
+       # we want to catch, among others
+       # [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
+       my ($parentrefname, $parentpathname, $refname, $pathname) =
+               ($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?([^:]+?)?(?::(.+))?$/);
+
+       # first, analyze the 'current' part
+       if (defined $pathname) {
+               # we got "branch:filename" or "branch:dir/"
+               # we could use git_get_type(branch:pathname), but:
+               # - it needs $git_dir
+               # - it does a git() call
+               # - the convention of terminating directories with a slash
+               #   makes it superfluous
+               # - embedding the action in the PATH_INFO would make it even
+               #   more superfluous
+               $pathname =~ s,^/+,,;
+               if (!$pathname || substr($pathname, -1) eq "/") {
+                       $input_params{'action'} ||= "tree";
+                       $pathname =~ s,/$,,;
+               } else {
+                       # the default action depends on whether we had parent info
+                       # or not
+                       if ($parentrefname) {
+                               $input_params{'action'} ||= "blobdiff_plain";
+                       } else {
+                               $input_params{'action'} ||= "blob_plain";
+                       }
+               }
+               $input_params{'hash_base'} ||= $refname;
+               $input_params{'file_name'} ||= $pathname;
+       } elsif (defined $refname) {
+               # we got "branch". In this case we have to choose if we have to
+               # set hash or hash_base.
+               #
+               # Most of the actions without a pathname only want hash to be
+               # set, except for the ones specified in @wants_base that want
+               # hash_base instead. It should also be noted that hand-crafted
+               # links having 'history' as an action and no pathname or hash
+               # set will fail, but that happens regardless of PATH_INFO.
+               if (defined $parentrefname) {
+                       # if there is parent let the default be 'shortlog' action
+                       # (for http://git.example.com/repo.git/A..B links); if there
+                       # is no parent, dispatch will detect type of object and set
+                       # action appropriately if required (if action is not set)
+                       $input_params{'action'} ||= "shortlog";
+               }
+               if ($input_params{'action'} &&
+                   grep { $_ eq $input_params{'action'} } @wants_base) {
+                       $input_params{'hash_base'} ||= $refname;
+               } else {
+                       $input_params{'hash'} ||= $refname;
+               }
+       }
+
+       # next, handle the 'parent' part, if present
+       if (defined $parentrefname) {
+               # a missing pathspec defaults to the 'current' filename, allowing e.g.
+               # someproject/blobdiff/oldrev..newrev:/filename
+               if ($parentpathname) {
+                       $parentpathname =~ s,^/+,,;
+                       $parentpathname =~ s,/$,,;
+                       $input_params{'file_parent'} ||= $parentpathname;
+               } else {
+                       $input_params{'file_parent'} ||= $input_params{'file_name'};
+               }
+               # we assume that hash_parent_base is wanted if a path was specified,
+               # or if the action wants hash_base instead of hash
+               if (defined $input_params{'file_parent'} ||
+                       grep { $_ eq $input_params{'action'} } @wants_base) {
+                       $input_params{'hash_parent_base'} ||= $parentrefname;
+               } else {
+                       $input_params{'hash_parent'} ||= $parentrefname;
+               }
+       }
+
+       # for the snapshot action, we allow URLs in the form
+       # $project/snapshot/$hash.ext
+       # where .ext determines the snapshot and gets removed from the
+       # passed $refname to provide the $hash.
+       #
+       # To be able to tell that $refname includes the format extension, we
+       # require the following two conditions to be satisfied:
+       # - the hash input parameter MUST have been set from the $refname part
+       #   of the URL (i.e. they must be equal)
+       # - the snapshot format MUST NOT have been defined already (e.g. from
+       #   CGI parameter sf)
+       # It's also useless to try any matching unless $refname has a dot,
+       # so we check for that too
+       if (defined $input_params{'action'} &&
+               $input_params{'action'} eq 'snapshot' &&
+               defined $refname && index($refname, '.') != -1 &&
+               $refname eq $input_params{'hash'} &&
+               !defined $input_params{'snapshot_format'}) {
+               # We loop over the known snapshot formats, checking for
+               # extensions. Allowed extensions are both the defined suffix
+               # (which includes the initial dot already) and the snapshot
+               # format key itself, with a prepended dot
+               while (my ($fmt, $opt) = each %known_snapshot_formats) {
+                       my $hash = $refname;
+                       unless ($hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//) {
+                               next;
+                       }
+                       my $sfx = $1;
+                       # a valid suffix was found, so set the snapshot format
+                       # and reset the hash parameter
+                       $input_params{'snapshot_format'} = $fmt;
+                       $input_params{'hash'} = $hash;
+                       # we also set the format suffix to the one requested
+                       # in the URL: this way a request for e.g. .tgz returns
+                       # a .tgz instead of a .tar.gz
+                       $known_snapshot_formats{$fmt}{'suffix'} = $sfx;
+                       last;
+               }
+       }
+}
+
+our ($action, $project, $file_name, $file_parent, $hash, $hash_parent, $hash_base,
+     $hash_parent_base, @extra_options, $page, $searchtype, $search_use_regexp,
+     $searchtext, $search_regexp, $project_filter);
+sub evaluate_and_validate_params {
+       our $action = $input_params{'action'};
+       if (defined $action) {
+               if (!is_valid_action($action)) {
+                       die_error(400, "Invalid action parameter");
+               }
+       }
+
+       # parameters which are pathnames
+       our $project = $input_params{'project'};
+       if (defined $project) {
+               if (!is_valid_project($project)) {
+                       undef $project;
+                       die_error(404, "No such project");
+               }
+       }
+
+       our $project_filter = $input_params{'project_filter'};
+       if (defined $project_filter) {
+               if (!is_valid_pathname($project_filter)) {
+                       die_error(404, "Invalid project_filter parameter");
+               }
+       }
+
+       our $file_name = $input_params{'file_name'};
+       if (defined $file_name) {
+               if (!is_valid_pathname($file_name)) {
+                       die_error(400, "Invalid file parameter");
+               }
+       }
+
+       our $file_parent = $input_params{'file_parent'};
+       if (defined $file_parent) {
+               if (!is_valid_pathname($file_parent)) {
+                       die_error(400, "Invalid file parent parameter");
+               }
+       }
+
+       # parameters which are refnames
+       our $hash = $input_params{'hash'};
+       if (defined $hash) {
+               if (!is_valid_refname($hash)) {
+                       die_error(400, "Invalid hash parameter");
+               }
+       }
+
+       our $hash_parent = $input_params{'hash_parent'};
+       if (defined $hash_parent) {
+               if (!is_valid_refname($hash_parent)) {
+                       die_error(400, "Invalid hash parent parameter");
+               }
+       }
+
+       our $hash_base = $input_params{'hash_base'};
+       if (defined $hash_base) {
+               if (!is_valid_refname($hash_base)) {
+                       die_error(400, "Invalid hash base parameter");
+               }
+       }
+
+       our @extra_options = @{$input_params{'extra_options'}};
+       # @extra_options is always defined, since it can only be (currently) set from
+       # CGI, and $cgi->param() returns the empty array in array context if the param
+       # is not set
+       foreach my $opt (@extra_options) {
+               if (not exists $allowed_options{$opt}) {
+                       die_error(400, "Invalid option parameter");
+               }
+               if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
+                       die_error(400, "Invalid option parameter for this action");
+               }
+       }
+
+       our $hash_parent_base = $input_params{'hash_parent_base'};
+       if (defined $hash_parent_base) {
+               if (!is_valid_refname($hash_parent_base)) {
+                       die_error(400, "Invalid hash parent base parameter");
+               }
+       }
+
+       # other parameters
+       our $page = $input_params{'page'};
+       if (defined $page) {
+               if ($page =~ m/[^0-9]/) {
+                       die_error(400, "Invalid page parameter");
+               }
+       }
+
+       our $searchtype = $input_params{'searchtype'};
+       if (defined $searchtype) {
+               if ($searchtype =~ m/[^a-z]/) {
+                       die_error(400, "Invalid searchtype parameter");
+               }
+       }
+
+       our $search_use_regexp = $input_params{'search_use_regexp'};
+
+       our $searchtext = $input_params{'searchtext'};
+       our $search_regexp = undef;
+       if (defined $searchtext) {
+               if (length($searchtext) < 2) {
+                       die_error(403, "At least two characters are required for search parameter");
+               }
+               if ($search_use_regexp) {
+                       $search_regexp = $searchtext;
+                       if (!eval { qr/$search_regexp/; 1; }) {
+                               my $error = $@ =~ s/ at \S+ line \d+.*\n?//r;
+                               die_error(400, "Invalid search regexp '$search_regexp'",
+                                         esc_html($error));
+                       }
+               } else {
+                       $search_regexp = quotemeta $searchtext;
+               }
+       }
+}
+
+# path to the current git repository
+our $git_dir;
+sub evaluate_git_dir {
+       our $git_dir = "$projectroot/$project" if $project;
+}
+
+our (@snapshot_fmts, $git_avatar, @extra_branch_refs);
+sub configure_gitweb_features {
+       # list of supported snapshot formats
+       our @snapshot_fmts = gitweb_get_feature('snapshot');
+       @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
+
+       our ($git_avatar) = gitweb_get_feature('avatar');
+       $git_avatar = '' unless $git_avatar =~ /^(?:gravatar|picon)$/s;
+
+       our @extra_branch_refs = gitweb_get_feature('extra-branch-refs');
+       @extra_branch_refs = filter_and_validate_refs (@extra_branch_refs);
+}
+
+sub get_branch_refs {
+       return ('heads', @extra_branch_refs);
+}
+
+# custom error handler: 'die <message>' is Internal Server Error
+sub handle_errors_html {
+       my $msg = shift; # it is already HTML escaped
+
+       # to avoid infinite loop where error occurs in die_error,
+       # change handler to default handler, disabling handle_errors_html
+       set_message("Error occurred when inside die_error:\n$msg");
+
+       # you cannot jump out of die_error when called as error handler;
+       # the subroutine set via CGI::Carp::set_message is called _after_
+       # HTTP headers are already written, so it cannot write them itself
+       die_error(undef, undef, $msg, -error_handler => 1, -no_http_header => 1);
+}
+set_message(\&handle_errors_html);
+
+# dispatch
+sub dispatch {
+       if (!defined $action) {
+               if (defined $hash) {
+                       $action = git_get_type($hash);
+                       $action or die_error(404, "Object does not exist");
+               } elsif (defined $hash_base && defined $file_name) {
+                       $action = git_get_type("$hash_base:$file_name");
+                       $action or die_error(404, "File or directory does not exist");
+               } elsif (defined $project) {
+                       $action = 'summary';
+               } else {
+                       $action = 'project_list';
+               }
+       }
+       if (!defined($actions{$action})) {
+               die_error(400, "Unknown action");
+       }
+       if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
+           !$project) {
+               die_error(400, "Project needed");
+       }
+       $actions{$action}->();
+}
+
+sub reset_timer {
+       our $t0 = [ gettimeofday() ]
+               if defined $t0;
+       our $number_of_git_cmds = 0;
+}
+
+our $first_request = 1;
+sub run_request {
+       reset_timer();
+
+       evaluate_uri();
+       if ($first_request) {
+               evaluate_gitweb_config();
+               evaluate_git_version();
+       }
+       if ($per_request_config) {
+               if (ref($per_request_config) eq 'CODE') {
+                       $per_request_config->();
+               } elsif (!$first_request) {
+                       evaluate_gitweb_config();
+               }
+       }
+       check_loadavg();
+
+       # $projectroot and $projects_list might be set in gitweb config file
+       $projects_list ||= $projectroot;
+
+       evaluate_query_params();
+       evaluate_path_info();
+       evaluate_and_validate_params();
+       evaluate_git_dir();
+
+       configure_gitweb_features();
+
+       dispatch();
+}
+
+our $is_last_request = sub { 1 };
+our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
+our $CGI = 'CGI';
+our $cgi;
+our $FCGI_Stream_PRINT_raw = \&FCGI::Stream::PRINT;
+sub configure_as_fcgi {
+       require CGI::Fast;
+       our $CGI = 'CGI::Fast';
+       # FCGI is not Unicode aware hence the UTF-8 encoding must be done manually.
+       # However no encoding must be done within git_blob_plain() and git_snapshot()
+       # which must still output in raw binary mode.
+       no warnings 'redefine';
+       my $enc = Encode::find_encoding('UTF-8');
+       *FCGI::Stream::PRINT = sub {
+               my @OUTPUT = @_;
+               for (my $i = 1; $i < @_; $i++) {
+                       $OUTPUT[$i] = $enc->encode($_[$i], Encode::FB_CROAK|Encode::LEAVE_SRC);
+               }
+               @_ = @OUTPUT;
+               goto $FCGI_Stream_PRINT_raw;
+       };
+
+       my $request_number = 0;
+       # let each child service 100 requests
+       our $is_last_request = sub { ++$request_number > 100 };
+}
+sub evaluate_argv {
+       my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
+       configure_as_fcgi()
+               if $script_name =~ /\.fcgi$/;
+
+       return unless (@ARGV);
+
+       require Getopt::Long;
+       Getopt::Long::GetOptions(
+               'fastcgi|fcgi|f' => \&configure_as_fcgi,
+               'nproc|n=i' => sub {
+                       my ($arg, $val) = @_;
+                       return unless eval { require FCGI::ProcManager; 1; };
+                       my $proc_manager = FCGI::ProcManager->new({
+                               n_processes => $val,
+                       });
+                       our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
+                       our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
+                       our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
+               },
+       );
+}
+
+sub run {
+       evaluate_argv();
+
+       $first_request = 1;
+       $pre_listen_hook->()
+               if $pre_listen_hook;
+
+ REQUEST:
+       while ($cgi = $CGI->new()) {
+               $pre_dispatch_hook->()
+                       if $pre_dispatch_hook;
+
+               run_request();
+
+               $post_dispatch_hook->()
+                       if $post_dispatch_hook;
+               $first_request = 0;
+
+               last REQUEST if ($is_last_request->());
+       }
+
+ DONE_GITWEB:
+       1;
+}
+
+run();
+
+if (defined caller) {
+       # wrapped in a subroutine processing requests,
+       # e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
+       return;
+} else {
+       # pure CGI script, serving single request
+       exit;
+}
+
+## ======================================================================
+## action links
+
+# possible values of extra options
+# -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
+# -replay => 1      - start from a current view (replay with modifications)
+# -path_info => 0|1 - don't use/use path_info URL (if possible)
+# -anchor => ANCHOR - add #ANCHOR to end of URL, implies -replay if used alone
+sub href {
+       my %params = @_;
+       # default is to use -absolute url() i.e. $my_uri
+       my $href = $params{-full} ? $my_url : $my_uri;
+
+       # implicit -replay, must be first of implicit params
+       $params{-replay} = 1 if (keys %params == 1 && $params{-anchor});
+
+       $params{'project'} = $project unless exists $params{'project'};
+
+       if ($params{-replay}) {
+               while (my ($name, $symbol) = each %cgi_param_mapping) {
+                       if (!exists $params{$name}) {
+                               $params{$name} = $input_params{$name};
+                       }
+               }
+       }
+
+       my $use_pathinfo = gitweb_check_feature('pathinfo');
+       if (defined $params{'project'} &&
+           (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
+               # try to put as many parameters as possible in PATH_INFO:
+               #   - project name
+               #   - action
+               #   - hash_parent or hash_parent_base:/file_parent
+               #   - hash or hash_base:/filename
+               #   - the snapshot_format as an appropriate suffix
+
+               # When the script is the root DirectoryIndex for the domain,
+               # $href here would be something like http://gitweb.example.com/
+               # Thus, we strip any trailing / from $href, to spare us double
+               # slashes in the final URL
+               $href =~ s,/$,,;
+
+               # Then add the project name, if present
+               $href .= "/".esc_path_info($params{'project'});
+               delete $params{'project'};
+
+               # since we destructively absorb parameters, we keep this
+               # boolean that remembers if we're handling a snapshot
+               my $is_snapshot = $params{'action'} eq 'snapshot';
+
+               # Summary just uses the project path URL, any other action is
+               # added to the URL
+               if (defined $params{'action'}) {
+                       $href .= "/".esc_path_info($params{'action'})
+                               unless $params{'action'} eq 'summary';
+                       delete $params{'action'};
+               }
+
+               # Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
+               # stripping nonexistent or useless pieces
+               $href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
+                       || $params{'hash_parent'} || $params{'hash'});
+               if (defined $params{'hash_base'}) {
+                       if (defined $params{'hash_parent_base'}) {
+                               $href .= esc_path_info($params{'hash_parent_base'});
+                               # skip the file_parent if it's the same as the file_name
+                               if (defined $params{'file_parent'}) {
+                                       if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
+                                               delete $params{'file_parent'};
+                                       } elsif ($params{'file_parent'} !~ /\.\./) {
+                                               $href .= ":/".esc_path_info($params{'file_parent'});
+                                               delete $params{'file_parent'};
+                                       }
+                               }
+                               $href .= "..";
+                               delete $params{'hash_parent'};
+                               delete $params{'hash_parent_base'};
+                       } elsif (defined $params{'hash_parent'}) {
+                               $href .= esc_path_info($params{'hash_parent'}). "..";
+                               delete $params{'hash_parent'};
+                       }
+
+                       $href .= esc_path_info($params{'hash_base'});
+                       if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
+                               $href .= ":/".esc_path_info($params{'file_name'});
+                               delete $params{'file_name'};
+                       }
+                       delete $params{'hash'};
+                       delete $params{'hash_base'};
+               } elsif (defined $params{'hash'}) {
+                       $href .= esc_path_info($params{'hash'});
+                       delete $params{'hash'};
+               }
+
+               # If the action was a snapshot, we can absorb the
+               # snapshot_format parameter too
+               if ($is_snapshot) {
+                       my $fmt = $params{'snapshot_format'};
+                       # snapshot_format should always be defined when href()
+                       # is called, but just in case some code forgets, we
+                       # fall back to the default
+                       $fmt ||= $snapshot_fmts[0];
+                       $href .= $known_snapshot_formats{$fmt}{'suffix'};
+                       delete $params{'snapshot_format'};
+               }
+       }
+
+       # now encode the parameters explicitly
+       my @result = ();
+       for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
+               my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
+               if (defined $params{$name}) {
+                       if (ref($params{$name}) eq "ARRAY") {
+                               foreach my $par (@{$params{$name}}) {
+                                       push @result, $symbol . "=" . esc_param($par);
+                               }
+                       } else {
+                               push @result, $symbol . "=" . esc_param($params{$name});
+                       }
+               }
+       }
+       $href .= "?" . join(';', @result) if scalar @result;
+
+       # final transformation: trailing spaces must be escaped (URI-encoded)
+       $href =~ s/(\s+)$/CGI::escape($1)/e;
+
+       if ($params{-anchor}) {
+               $href .= "#".esc_param($params{-anchor});
+       }
+
+       return $href;
+}
+
+
+## ======================================================================
+## validation, quoting/unquoting and escaping
+
+sub is_valid_action {
+       my $input = shift;
+       return undef unless exists $actions{$input};
+       return 1;
+}
+
+sub is_valid_project {
+       my $input = shift;
+
+       return unless defined $input;
+       if (!is_valid_pathname($input) ||
+               !(-d "$projectroot/$input") ||
+               !check_export_ok("$projectroot/$input") ||
+               ($strict_export && !project_in_list($input))) {
+               return undef;
+       } else {
+               return 1;
+       }
+}
+
+sub is_valid_pathname {
+       my $input = shift;
+
+       return undef unless defined $input;
+       # no '.' or '..' as elements of path, i.e. no '.' or '..'
+       # at the beginning, at the end, and between slashes.
+       # also this catches doubled slashes
+       if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
+               return undef;
+       }
+       # no null characters
+       if ($input =~ m!\0!) {
+               return undef;
+       }
+       return 1;
+}
+
+sub is_valid_ref_format {
+       my $input = shift;
+
+       return undef unless defined $input;
+       # restrictions on ref name according to git-check-ref-format
+       if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
+               return undef;
+       }
+       return 1;
+}
+
+sub is_valid_refname {
+       my $input = shift;
+
+       return undef unless defined $input;
+       # textual hashes are O.K.
+       if ($input =~ m/^$oid_regex$/) {
+               return 1;
+       }
+       # it must be correct pathname
+       is_valid_pathname($input) or return undef;
+       # check git-check-ref-format restrictions
+       is_valid_ref_format($input) or return undef;
+       return 1;
+}
+
+# decode sequences of octets in utf8 into Perl's internal form,
+# which is utf-8 with utf8 flag set if needed.  gitweb writes out
+# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
+sub to_utf8 {
+       my $str = shift;
+       return undef unless defined $str;
+
+       if (utf8::is_utf8($str) || utf8::decode($str)) {
+               return $str;
+       } else {
+               return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
+       }
+}
+
+# quote unsafe chars, but keep the slash, even when it's not
+# correct, but quoted slashes look too horrible in bookmarks
+sub esc_param {
+       my $str = shift;
+       return undef unless defined $str;
+       $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
+       $str =~ s/ /\+/g;
+       return $str;
+}
+
+# the quoting rules for path_info fragment are slightly different
+sub esc_path_info {
+       my $str = shift;
+       return undef unless defined $str;
+
+       # path_info doesn't treat '+' as space (specially), but '?' must be escaped
+       $str =~ s/([^A-Za-z0-9\-_.~();\/;:@&= +]+)/CGI::escape($1)/eg;
+
+       return $str;
+}
+
+# quote unsafe chars in whole URL, so some characters cannot be quoted
+sub esc_url {
+       my $str = shift;
+       return undef unless defined $str;
+       $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
+       $str =~ s/ /\+/g;
+       return $str;
+}
+
+# quote unsafe characters in HTML attributes
+sub esc_attr {
+
+       # for XHTML conformance escaping '"' to '&quot;' is not enough
+       return esc_html(@_);
+}
+
+# replace invalid utf8 character with SUBSTITUTION sequence
+sub esc_html {
+       my $str = shift;
+       my %opts = @_;
+
+       return undef unless defined $str;
+
+       $str = to_utf8($str);
+       $str = $cgi->escapeHTML($str);
+       if ($opts{'-nbsp'}) {
+               $str =~ s/ /&nbsp;/g;
+       }
+       $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
+       return $str;
+}
+
+# quote control characters and escape filename to HTML
+sub esc_path {
+       my $str = shift;
+       my %opts = @_;
+
+       return undef unless defined $str;
+
+       $str = to_utf8($str);
+       $str = $cgi->escapeHTML($str);
+       if ($opts{'-nbsp'}) {
+               $str =~ s/ /&nbsp;/g;
+       }
+       $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
+       return $str;
+}
+
+# Sanitize for use in XHTML + application/xml+xhtml (valid XML 1.0)
+sub sanitize {
+       my $str = shift;
+
+       return undef unless defined $str;
+
+       $str = to_utf8($str);
+       $str =~ s|([[:cntrl:]])|(index("\t\n\r", $1) != -1 ? $1 : quot_cec($1))|eg;
+       return $str;
+}
+
+# Make control characters "printable", using character escape codes (CEC)
+sub quot_cec {
+       my $cntrl = shift;
+       my %opts = @_;
+       my %es = ( # character escape codes, aka escape sequences
+               "\t" => '\t',   # tab             (HT)
+               "\n" => '\n',   # line feed       (LF)
+               "\r" => '\r',   # carriage return (CR)
+               "\f" => '\f',   # form feed       (FF)
+               "\b" => '\b',   # backspace       (BS)
+               "\a" => '\a',   # alarm (bell)    (BEL)
+               "\e" => '\e',   # escape          (ESC)
+               "\013" => '\v', # vertical tab    (VT)
+               "\000" => '\0', # nul character   (NUL)
+       );
+       my $chr = ( (exists $es{$cntrl})
+                   ? $es{$cntrl}
+                   : sprintf('\%2x', ord($cntrl)) );
+       if ($opts{-nohtml}) {
+               return $chr;
+       } else {
+               return "<span class=\"cntrl\">$chr</span>";
+       }
+}
+
+# Alternatively use unicode control pictures codepoints,
+# Unicode "printable representation" (PR)
+sub quot_upr {
+       my $cntrl = shift;
+       my %opts = @_;
+
+       my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
+       if ($opts{-nohtml}) {
+               return $chr;
+       } else {
+               return "<span class=\"cntrl\">$chr</span>";
+       }
+}
+
+# git may return quoted and escaped filenames
+sub unquote {
+       my $str = shift;
+
+       sub unq {
+               my $seq = shift;
+               my %es = ( # character escape codes, aka escape sequences
+                       't' => "\t",   # tab            (HT, TAB)
+                       'n' => "\n",   # newline        (NL)
+                       'r' => "\r",   # return         (CR)
+                       'f' => "\f",   # form feed      (FF)
+                       'b' => "\b",   # backspace      (BS)
+                       'a' => "\a",   # alarm (bell)   (BEL)
+                       'e' => "\e",   # escape         (ESC)
+                       'v' => "\013", # vertical tab   (VT)
+               );
+
+               if ($seq =~ m/^[0-7]{1,3}$/) {
+                       # octal char sequence
+                       return chr(oct($seq));
+               } elsif (exists $es{$seq}) {
+                       # C escape sequence, aka character escape code
+                       return $es{$seq};
+               }
+               # quoted ordinary character
+               return $seq;
+       }
+
+       if ($str =~ m/^"(.*)"$/) {
+               # needs unquoting
+               $str = $1;
+               $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
+       }
+       return $str;
+}
+
+# escape tabs (convert tabs to spaces)
+sub untabify {
+       my $line = shift;
+
+       while ((my $pos = index($line, "\t")) != -1) {
+               if (my $count = (8 - ($pos % 8))) {
+                       my $spaces = ' ' x $count;
+                       $line =~ s/\t/$spaces/;
+               }
+       }
+
+       return $line;
+}
+
+sub project_in_list {
+       my $project = shift;
+       my @list = git_get_projects_list();
+       return @list && scalar(grep { $_->{'path'} eq $project } @list);
+}
+
+## ----------------------------------------------------------------------
+## HTML aware string manipulation
+
+# Try to chop given string on a word boundary between position
+# $len and $len+$add_len. If there is no word boundary there,
+# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
+# (marking chopped part) would be longer than given string.
+sub chop_str {
+       my $str = shift;
+       my $len = shift;
+       my $add_len = shift || 10;
+       my $where = shift || 'right'; # 'left' | 'center' | 'right'
+
+       # Make sure perl knows it is utf8 encoded so we don't
+       # cut in the middle of a utf8 multibyte char.
+       $str = to_utf8($str);
+
+       # allow only $len chars, but don't cut a word if it would fit in $add_len
+       # if it doesn't fit, cut it if it's still longer than the dots we would add
+       # remove chopped character entities entirely
+
+       # when chopping in the middle, distribute $len into left and right part
+       # return early if chopping wouldn't make string shorter
+       if ($where eq 'center') {
+               return $str if ($len + 5 >= length($str)); # filler is length 5
+               $len = int($len/2);
+       } else {
+               return $str if ($len + 4 >= length($str)); # filler is length 4
+       }
+
+       # regexps: ending and beginning with word part up to $add_len
+       my $endre = qr/.{$len}\w{0,$add_len}/;
+       my $begre = qr/\w{0,$add_len}.{$len}/;
+
+       if ($where eq 'left') {
+               $str =~ m/^(.*?)($begre)$/;
+               my ($lead, $body) = ($1, $2);
+               if (length($lead) > 4) {
+                       $lead = " ...";
+               }
+               return "$lead$body";
+
+       } elsif ($where eq 'center') {
+               $str =~ m/^($endre)(.*)$/;
+               my ($left, $str)  = ($1, $2);
+               $str =~ m/^(.*?)($begre)$/;
+               my ($mid, $right) = ($1, $2);
+               if (length($mid) > 5) {
+                       $mid = " ... ";
+               }
+               return "$left$mid$right";
+
+       } else {
+               $str =~ m/^($endre)(.*)$/;
+               my $body = $1;
+               my $tail = $2;
+               if (length($tail) > 4) {
+                       $tail = "... ";
+               }
+               return "$body$tail";
+       }
+}
+
+# takes the same arguments as chop_str, but also wraps a <span> around the
+# result with a title attribute if it does get chopped. Additionally, the
+# string is HTML-escaped.
+sub chop_and_escape_str {
+       my ($str) = @_;
+
+       my $chopped = chop_str(@_);
+       $str = to_utf8($str);
+       if ($chopped eq $str) {
+               return esc_html($chopped);
+       } else {
+               $str =~ s/[[:cntrl:]]/?/g;
+               return $cgi->span({-title=>$str}, esc_html($chopped));
+       }
+}
+
+# Highlight selected fragments of string, using given CSS class,
+# and escape HTML.  It is assumed that fragments do not overlap.
+# Regions are passed as list of pairs (array references).
+#
+# Example: esc_html_hl_regions("foobar", "mark", [ 0, 3 ]) returns
+# '<span class="mark">foo</span>bar'
+sub esc_html_hl_regions {
+       my ($str, $css_class, @sel) = @_;
+       my %opts = grep { ref($_) ne 'ARRAY' } @sel;
+       @sel     = grep { ref($_) eq 'ARRAY' } @sel;
+       return esc_html($str, %opts) unless @sel;
+
+       my $out = '';
+       my $pos = 0;
+
+       for my $s (@sel) {
+               my ($begin, $end) = @$s;
+
+               # Don't create empty <span> elements.
+               next if $end <= $begin;
+
+               my $escaped = esc_html(substr($str, $begin, $end - $begin),
+                                      %opts);
+
+               $out .= esc_html(substr($str, $pos, $begin - $pos), %opts)
+                       if ($begin - $pos > 0);
+               $out .= $cgi->span({-class => $css_class}, $escaped);
+
+               $pos = $end;
+       }
+       $out .= esc_html(substr($str, $pos), %opts)
+               if ($pos < length($str));
+
+       return $out;
+}
+
+# return positions of beginning and end of each match
+sub matchpos_list {
+       my ($str, $regexp) = @_;
+       return unless (defined $str && defined $regexp);
+
+       my @matches;
+       while ($str =~ /$regexp/g) {
+               push @matches, [$-[0], $+[0]];
+       }
+       return @matches;
+}
+
+# highlight match (if any), and escape HTML
+sub esc_html_match_hl {
+       my ($str, $regexp) = @_;
+       return esc_html($str) unless defined $regexp;
+
+       my @matches = matchpos_list($str, $regexp);
+       return esc_html($str) unless @matches;
+
+       return esc_html_hl_regions($str, 'match', @matches);
+}
+
+
+# highlight match (if any) of shortened string, and escape HTML
+sub esc_html_match_hl_chopped {
+       my ($str, $chopped, $regexp) = @_;
+       return esc_html_match_hl($str, $regexp) unless defined $chopped;
+
+       my @matches = matchpos_list($str, $regexp);
+       return esc_html($chopped) unless @matches;
+
+       # filter matches so that we mark chopped string
+       my $tail = "... "; # see chop_str
+       unless ($chopped =~ s/\Q$tail\E$//) {
+               $tail = '';
+       }
+       my $chop_len = length($chopped);
+       my $tail_len = length($tail);
+       my @filtered;
+
+       for my $m (@matches) {
+               if ($m->[0] > $chop_len) {
+                       push @filtered, [ $chop_len, $chop_len + $tail_len ] if ($tail_len > 0);
+                       last;
+               } elsif ($m->[1] > $chop_len) {
+                       push @filtered, [ $m->[0], $chop_len + $tail_len ];
+                       last;
+               }
+               push @filtered, $m;
+       }
+
+       return esc_html_hl_regions($chopped . $tail, 'match', @filtered);
+}
+
+## ----------------------------------------------------------------------
+## functions returning short strings
+
+# CSS class for given age value (in seconds)
+sub age_class {
+       my $age = shift;
+
+       if (!defined $age) {
+               return "noage";
+       } elsif ($age < 60*60*2) {
+               return "age0";
+       } elsif ($age < 60*60*24*2) {
+               return "age1";
+       } else {
+               return "age2";
+       }
+}
+
+# convert age in seconds to "nn units ago" string
+sub age_string {
+       my $age = shift;
+       my $age_str;
+
+       if ($age > 60*60*24*365*2) {
+               $age_str = (int $age/60/60/24/365);
+               $age_str .= " years ago";
+       } elsif ($age > 60*60*24*(365/12)*2) {
+               $age_str = int $age/60/60/24/(365/12);
+               $age_str .= " months ago";
+       } elsif ($age > 60*60*24*7*2) {
+               $age_str = int $age/60/60/24/7;
+               $age_str .= " weeks ago";
+       } elsif ($age > 60*60*24*2) {
+               $age_str = int $age/60/60/24;
+               $age_str .= " days ago";
+       } elsif ($age > 60*60*2) {
+               $age_str = int $age/60/60;
+               $age_str .= " hours ago";
+       } elsif ($age > 60*2) {
+               $age_str = int $age/60;
+               $age_str .= " min ago";
+       } elsif ($age > 2) {
+               $age_str = int $age;
+               $age_str .= " sec ago";
+       } else {
+               $age_str .= " right now";
+       }
+       return $age_str;
+}
+
+use constant {
+       S_IFINVALID => 0030000,
+       S_IFGITLINK => 0160000,
+};
+
+# submodule/subproject, a commit object reference
+sub S_ISGITLINK {
+       my $mode = shift;
+
+       return (($mode & S_IFMT) == S_IFGITLINK)
+}
+
+# convert file mode in octal to symbolic file mode string
+sub mode_str {
+       my $mode = oct shift;
+
+       if (S_ISGITLINK($mode)) {
+               return 'm---------';
+       } elsif (S_ISDIR($mode & S_IFMT)) {
+               return 'drwxr-xr-x';
+       } elsif (S_ISLNK($mode)) {
+               return 'lrwxrwxrwx';
+       } elsif (S_ISREG($mode)) {
+               # git cares only about the executable bit
+               if ($mode & S_IXUSR) {
+                       return '-rwxr-xr-x';
+               } else {
+                       return '-rw-r--r--';
+               };
+       } else {
+               return '----------';
+       }
+}
+
+# convert file mode in octal to file type string
+sub file_type {
+       my $mode = shift;
+
+       if ($mode !~ m/^[0-7]+$/) {
+               return $mode;
+       } else {
+               $mode = oct $mode;
+       }
+
+       if (S_ISGITLINK($mode)) {
+               return "submodule";
+       } elsif (S_ISDIR($mode & S_IFMT)) {
+               return "directory";
+       } elsif (S_ISLNK($mode)) {
+               return "symlink";
+       } elsif (S_ISREG($mode)) {
+               return "file";
+       } else {
+               return "unknown";
+       }
+}
+
+# convert file mode in octal to file type description string
+sub file_type_long {
+       my $mode = shift;
+
+       if ($mode !~ m/^[0-7]+$/) {
+               return $mode;
+       } else {
+               $mode = oct $mode;
+       }
+
+       if (S_ISGITLINK($mode)) {
+               return "submodule";
+       } elsif (S_ISDIR($mode & S_IFMT)) {
+               return "directory";
+       } elsif (S_ISLNK($mode)) {
+               return "symlink";
+       } elsif (S_ISREG($mode)) {
+               if ($mode & S_IXUSR) {
+                       return "executable";
+               } else {
+                       return "file";
+               };
+       } else {
+               return "unknown";
+       }
+}
+
+
+## ----------------------------------------------------------------------
+## functions returning short HTML fragments, or transforming HTML fragments
+## which don't belong to other sections
+
+# format line of commit message.
+sub format_log_line_html {
+       my $line = shift;
+
+       # Potentially abbreviated OID.
+       my $regex = oid_nlen_regex("7,64");
+
+       $line = esc_html($line, -nbsp=>1);
+       $line =~ s{
+        \b
+        (
+            # The output of "git describe", e.g. v2.10.0-297-gf6727b0
+            # or hadoop-20160921-113441-20-g094fb7d
+            (?<!-) # see check_tag_ref(). Tags can't start with -
+            [A-Za-z0-9.-]+
+            (?!\.) # refs can't end with ".", see check_refname_format()
+            -g$regex
+            |
+            # Just a normal looking Git SHA1
+           $regex
+        )
+        \b
+    }{
+               $cgi->a({-href => href(action=>"object", hash=>$1),
+                                       -class => "text"}, $1);
+       }egx;
+
+       return $line;
+}
+
+# format marker of refs pointing to given object
+
+# the destination action is chosen based on object type and current context:
+# - for annotated tags, we choose the tag view unless it's the current view
+#   already, in which case we go to shortlog view
+# - for other refs, we keep the current view if we're in history, shortlog or
+#   log view, and select shortlog otherwise
+sub format_ref_marker {
+       my ($refs, $id) = @_;
+       my $markers = '';
+
+       if (defined $refs->{$id}) {
+               foreach my $ref (@{$refs->{$id}}) {
+                       # this code exploits the fact that non-lightweight tags are the
+                       # only indirect objects, and that they are the only objects for which
+                       # we want to use tag instead of shortlog as action
+                       my ($type, $name) = qw();
+                       my $indirect = ($ref =~ s/\^\{\}$//);
+                       # e.g. tags/v2.6.11 or heads/next
+                       if ($ref =~ m!^(.*?)s?/(.*)$!) {
+                               $type = $1;
+                               $name = $2;
+                       } else {
+                               $type = "ref";
+                               $name = $ref;
+                       }
+
+                       my $class = $type;
+                       $class .= " indirect" if $indirect;
+
+                       my $dest_action = "shortlog";
+
+                       if ($indirect) {
+                               $dest_action = "tag" unless $action eq "tag";
+                       } elsif ($action =~ /^(history|(short)?log)$/) {
+                               $dest_action = $action;
+                       }
+
+                       my $dest = "";
+                       $dest .= "refs/" unless $ref =~ m!^refs/!;
+                       $dest .= $ref;
+
+                       my $link = $cgi->a({
+                               -href => href(
+                                       action=>$dest_action,
+                                       hash=>$dest
+                               )}, esc_html($name));
+
+                       $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
+                               $link . "</span>";
+               }
+       }
+
+       if ($markers) {
+               return ' <span class="refs">'. $markers . '</span>';
+       } else {
+               return "";
+       }
+}
+
+# format, perhaps shortened and with markers, title line
+sub format_subject_html {
+       my ($long, $short, $href, $extra) = @_;
+       $extra = '' unless defined($extra);
+
+       if (length($short) < length($long)) {
+               $long =~ s/[[:cntrl:]]/?/g;
+               return $cgi->a({-href => $href, -class => "list subject",
+                               -title => to_utf8($long)},
+                      esc_html($short)) . $extra;
+       } else {
+               return $cgi->a({-href => $href, -class => "list subject"},
+                      esc_html($long)) . $extra;
+       }
+}
+
+# Rather than recomputing the url for an email multiple times, we cache it
+# after the first hit. This gives a visible benefit in views where the avatar
+# for the same email is used repeatedly (e.g. shortlog).
+# The cache is shared by all avatar engines (currently gravatar only), which
+# are free to use it as preferred. Since only one avatar engine is used for any
+# given page, there's no risk for cache conflicts.
+our %avatar_cache = ();
+
+# Compute the picon url for a given email, by using the picon search service over at
+# http://www.cs.indiana.edu/picons/search.html
+sub picon_url {
+       my $email = lc shift;
+       if (!$avatar_cache{$email}) {
+               my ($user, $domain) = split('@', $email);
+               $avatar_cache{$email} =
+                       "//www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
+                       "$domain/$user/" .
+                       "users+domains+unknown/up/single";
+       }
+       return $avatar_cache{$email};
+}
+
+# Compute the gravatar url for a given email, if it's not in the cache already.
+# Gravatar stores only the part of the URL before the size, since that's the
+# one computationally more expensive. This also allows reuse of the cache for
+# different sizes (for this particular engine).
+sub gravatar_url {
+       my $email = lc shift;
+       my $size = shift;
+       $avatar_cache{$email} ||=
+               "//www.gravatar.com/avatar/" .
+                       md5_hex($email) . "?s=";
+       return $avatar_cache{$email} . $size;
+}
+
+# Insert an avatar for the given $email at the given $size if the feature
+# is enabled.
+sub git_get_avatar {
+       my ($email, %opts) = @_;
+       my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
+       my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
+       $opts{-size} ||= 'default';
+       my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
+       my $url = "";
+       if ($git_avatar eq 'gravatar') {
+               $url = gravatar_url($email, $size);
+       } elsif ($git_avatar eq 'picon') {
+               $url = picon_url($email);
+       }
+       # Other providers can be added by extending the if chain, defining $url
+       # as needed. If no variant puts something in $url, we assume avatars
+       # are completely disabled/unavailable.
+       if ($url) {
+               return $pre_white .
+                      "<img width=\"$size\" " .
+                           "class=\"avatar\" " .
+                           "src=\"".esc_url($url)."\" " .
+                           "alt=\"\" " .
+                      "/>" . $post_white;
+       } else {
+               return "";
+       }
+}
+
+sub format_search_author {
+       my ($author, $searchtype, $displaytext) = @_;
+       my $have_search = gitweb_check_feature('search');
+
+       if ($have_search) {
+               my $performed = "";
+               if ($searchtype eq 'author') {
+                       $performed = "authored";
+               } elsif ($searchtype eq 'committer') {
+                       $performed = "committed";
+               }
+
+               return $cgi->a({-href => href(action=>"search", hash=>$hash,
+                               searchtext=>$author,
+                               searchtype=>$searchtype), class=>"list",
+                               title=>"Search for commits $performed by $author"},
+                               $displaytext);
+
+       } else {
+               return $displaytext;
+       }
+}
+
+# format the author name of the given commit with the given tag
+# the author name is chopped and escaped according to the other
+# optional parameters (see chop_str).
+sub format_author_html {
+       my $tag = shift;
+       my $co = shift;
+       my $author = chop_and_escape_str($co->{'author_name'}, @_);
+       return "<$tag class=\"author\">" .
+              format_search_author($co->{'author_name'}, "author",
+                      git_get_avatar($co->{'author_email'}, -pad_after => 1) .
+                      $author) .
+              "</$tag>";
+}
+
+# format git diff header line, i.e. "diff --(git|combined|cc) ..."
+sub format_git_diff_header_line {
+       my $line = shift;
+       my $diffinfo = shift;
+       my ($from, $to) = @_;
+
+       if ($diffinfo->{'nparents'}) {
+               # combined diff
+               $line =~ s!^(diff (.*?) )"?.*$!$1!;
+               if ($to->{'href'}) {
+                       $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
+                                        esc_path($to->{'file'}));
+               } else { # file was deleted (no href)
+                       $line .= esc_path($to->{'file'});
+               }
+       } else {
+               # "ordinary" diff
+               $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
+               if ($from->{'href'}) {
+                       $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
+                                        'a/' . esc_path($from->{'file'}));
+               } else { # file was added (no href)
+                       $line .= 'a/' . esc_path($from->{'file'});
+               }
+               $line .= ' ';
+               if ($to->{'href'}) {
+                       $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
+                                        'b/' . esc_path($to->{'file'}));
+               } else { # file was deleted
+                       $line .= 'b/' . esc_path($to->{'file'});
+               }
+       }
+
+       return "<div class=\"diff header\">$line</div>\n";
+}
+
+# format extended diff header line, before patch itself
+sub format_extended_diff_header_line {
+       my $line = shift;
+       my $diffinfo = shift;
+       my ($from, $to) = @_;
+
+       # match <path>
+       if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
+               $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
+                                      esc_path($from->{'file'}));
+       }
+       if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
+               $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
+                                esc_path($to->{'file'}));
+       }
+       # match single <mode>
+       if ($line =~ m/\s(\d{6})$/) {
+               $line .= '<span class="info"> (' .
+                        file_type_long($1) .
+                        ')</span>';
+       }
+       # match <hash>
+       if ($line =~ oid_nlen_prefix_infix_regex($sha1_len, "index ", ",") |
+           $line =~ oid_nlen_prefix_infix_regex($sha256_len, "index ", ",")) {
+               # can match only for combined diff
+               $line = 'index ';
+               for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
+                       if ($from->{'href'}[$i]) {
+                               $line .= $cgi->a({-href=>$from->{'href'}[$i],
+                                                 -class=>"hash"},
+                                                substr($diffinfo->{'from_id'}[$i],0,7));
+                       } else {
+                               $line .= '0' x 7;
+                       }
+                       # separator
+                       $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
+               }
+               $line .= '..';
+               if ($to->{'href'}) {
+                       $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
+                                        substr($diffinfo->{'to_id'},0,7));
+               } else {
+                       $line .= '0' x 7;
+               }
+
+       } elsif ($line =~ oid_nlen_prefix_infix_regex($sha1_len, "index ", "..") |
+                $line =~ oid_nlen_prefix_infix_regex($sha256_len, "index ", "..")) {
+               # can match only for ordinary diff
+               my ($from_link, $to_link);
+               if ($from->{'href'}) {
+                       $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
+                                            substr($diffinfo->{'from_id'},0,7));
+               } else {
+                       $from_link = '0' x 7;
+               }
+               if ($to->{'href'}) {
+                       $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
+                                          substr($diffinfo->{'to_id'},0,7));
+               } else {
+                       $to_link = '0' x 7;
+               }
+               my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
+               $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
+       }
+
+       return $line . "<br/>\n";
+}
+
+# format from-file/to-file diff header
+sub format_diff_from_to_header {
+       my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
+       my $line;
+       my $result = '';
+
+       $line = $from_line;
+       #assert($line =~ m/^---/) if DEBUG;
+       # no extra formatting for "^--- /dev/null"
+       if (! $diffinfo->{'nparents'}) {
+               # ordinary (single parent) diff
+               if ($line =~ m!^--- "?a/!) {
+                       if ($from->{'href'}) {
+                               $line = '--- a/' .
+                                       $cgi->a({-href=>$from->{'href'}, -class=>"path"},
+                                               esc_path($from->{'file'}));
+                       } else {
+                               $line = '--- a/' .
+                                       esc_path($from->{'file'});
+                       }
+               }
+               $result .= qq!<div class="diff from_file">$line</div>\n!;
+
+       } else {
+               # combined diff (merge commit)
+               for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
+                       if ($from->{'href'}[$i]) {
+                               $line = '--- ' .
+                                       $cgi->a({-href=>href(action=>"blobdiff",
+                                                            hash_parent=>$diffinfo->{'from_id'}[$i],
+                                                            hash_parent_base=>$parents[$i],
+                                                            file_parent=>$from->{'file'}[$i],
+                                                            hash=>$diffinfo->{'to_id'},
+                                                            hash_base=>$hash,
+                                                            file_name=>$to->{'file'}),
+                                                -class=>"path",
+                                                -title=>"diff" . ($i+1)},
+                                               $i+1) .
+                                       '/' .
+                                       $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
+                                               esc_path($from->{'file'}[$i]));
+                       } else {
+                               $line = '--- /dev/null';
+                       }
+                       $result .= qq!<div class="diff from_file">$line</div>\n!;
+               }
+       }
+
+       $line = $to_line;
+       #assert($line =~ m/^\+\+\+/) if DEBUG;
+       # no extra formatting for "^+++ /dev/null"
+       if ($line =~ m!^\+\+\+ "?b/!) {
+               if ($to->{'href'}) {
+                       $line = '+++ b/' .
+                               $cgi->a({-href=>$to->{'href'}, -class=>"path"},
+                                       esc_path($to->{'file'}));
+               } else {
+                       $line = '+++ b/' .
+                               esc_path($to->{'file'});
+               }
+       }
+       $result .= qq!<div class="diff to_file">$line</div>\n!;
+
+       return $result;
+}
+
+# create note for patch simplified by combined diff
+sub format_diff_cc_simplified {
+       my ($diffinfo, @parents) = @_;
+       my $result = '';
+
+       $result .= "<div class=\"diff header\">" .
+                  "diff --cc ";
+       if (!is_deleted($diffinfo)) {
+               $result .= $cgi->a({-href => href(action=>"blob",
+                                                 hash_base=>$hash,
+                                                 hash=>$diffinfo->{'to_id'},
+                                                 file_name=>$diffinfo->{'to_file'}),
+                                   -class => "path"},
+                                  esc_path($diffinfo->{'to_file'}));
+       } else {
+               $result .= esc_path($diffinfo->{'to_file'});
+       }
+       $result .= "</div>\n" . # class="diff header"
+                  "<div class=\"diff nodifferences\">" .
+                  "Simple merge" .
+                  "</div>\n"; # class="diff nodifferences"
+
+       return $result;
+}
+
+sub diff_line_class {
+       my ($line, $from, $to) = @_;
+
+       # ordinary diff
+       my $num_sign = 1;
+       # combined diff
+       if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
+               $num_sign = scalar @{$from->{'href'}};
+       }
+
+       my @diff_line_classifier = (
+               { regexp => qr/^\@\@{$num_sign} /, class => "chunk_header"},
+               { regexp => qr/^\\/,               class => "incomplete"  },
+               { regexp => qr/^ {$num_sign}/,     class => "ctx" },
+               # classifier for context must come before classifier add/rem,
+               # or we would have to use more complicated regexp, for example
+               # qr/(?= {0,$m}\+)[+ ]{$num_sign}/, where $m = $num_sign - 1;
+               { regexp => qr/^[+ ]{$num_sign}/,   class => "add" },
+               { regexp => qr/^[- ]{$num_sign}/,   class => "rem" },
+       );
+       for my $clsfy (@diff_line_classifier) {
+               return $clsfy->{'class'}
+                       if ($line =~ $clsfy->{'regexp'});
+       }
+
+       # fallback
+       return "";
+}
+
+# assumes that $from and $to are defined and correctly filled,
+# and that $line holds a line of chunk header for unified diff
+sub format_unidiff_chunk_header {
+       my ($line, $from, $to) = @_;
+
+       my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
+               $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
+
+       $from_lines = 0 unless defined $from_lines;
+       $to_lines   = 0 unless defined $to_lines;
+
+       if ($from->{'href'}) {
+               $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
+                                    -class=>"list"}, $from_text);
+       }
+       if ($to->{'href'}) {
+               $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
+                                    -class=>"list"}, $to_text);
+       }
+       $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
+               "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
+       return $line;
+}
+
+# assumes that $from and $to are defined and correctly filled,
+# and that $line holds a line of chunk header for combined diff
+sub format_cc_diff_chunk_header {
+       my ($line, $from, $to) = @_;
+
+       my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
+       my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
+
+       @from_text = split(' ', $ranges);
+       for (my $i = 0; $i < @from_text; ++$i) {
+               ($from_start[$i], $from_nlines[$i]) =
+                       (split(',', substr($from_text[$i], 1)), 0);
+       }
+
+       $to_text   = pop @from_text;
+       $to_start  = pop @from_start;
+       $to_nlines = pop @from_nlines;
+
+       $line = "<span class=\"chunk_info\">$prefix ";
+       for (my $i = 0; $i < @from_text; ++$i) {
+               if ($from->{'href'}[$i]) {
+                       $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
+                                         -class=>"list"}, $from_text[$i]);
+               } else {
+                       $line .= $from_text[$i];
+               }
+               $line .= " ";
+       }
+       if ($to->{'href'}) {
+               $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
+                                 -class=>"list"}, $to_text);
+       } else {
+               $line .= $to_text;
+       }
+       $line .= " $prefix</span>" .
+                "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
+       return $line;
+}
+
+# process patch (diff) line (not to be used for diff headers),
+# returning HTML-formatted (but not wrapped) line.
+# If the line is passed as a reference, it is treated as HTML and not
+# esc_html()'ed.
+sub format_diff_line {
+       my ($line, $diff_class, $from, $to) = @_;
+
+       if (ref($line)) {
+               $line = $$line;
+       } else {
+               chomp $line;
+               $line = untabify($line);
+
+               if ($from && $to && $line =~ m/^\@{2} /) {
+                       $line = format_unidiff_chunk_header($line, $from, $to);
+               } elsif ($from && $to && $line =~ m/^\@{3}/) {
+                       $line = format_cc_diff_chunk_header($line, $from, $to);
+               } else {
+                       $line = esc_html($line, -nbsp=>1);
+               }
+       }
+
+       my $diff_classes = "diff";
+       $diff_classes .= " $diff_class" if ($diff_class);
+       $line = "<div class=\"$diff_classes\">$line</div>\n";
+
+       return $line;
+}
+
+# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
+# linked.  Pass the hash of the tree/commit to snapshot.
+sub format_snapshot_links {
+       my ($hash) = @_;
+       my $num_fmts = @snapshot_fmts;
+       if ($num_fmts > 1) {
+               # A parenthesized list of links bearing format names.
+               # e.g. "snapshot (_tar.gz_ _zip_)"
+               return "snapshot (" . join(' ', map
+                       $cgi->a({
+                               -href => href(
+                                       action=>"snapshot",
+                                       hash=>$hash,
+                                       snapshot_format=>$_
+                               )
+                       }, $known_snapshot_formats{$_}{'display'})
+               , @snapshot_fmts) . ")";
+       } elsif ($num_fmts == 1) {
+               # A single "snapshot" link whose tooltip bears the format name.
+               # i.e. "_snapshot_"
+               my ($fmt) = @snapshot_fmts;
+               return
+                       $cgi->a({
+                               -href => href(
+                                       action=>"snapshot",
+                                       hash=>$hash,
+                                       snapshot_format=>$fmt
+                               ),
+                               -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
+                       }, "snapshot");
+       } else { # $num_fmts == 0
+               return undef;
+       }
+}
+
+## ......................................................................
+## functions returning values to be passed, perhaps after some
+## transformation, to other functions; e.g. returning arguments to href()
+
+# returns hash to be passed to href to generate gitweb URL
+# in -title key it returns description of link
+sub get_feed_info {
+       my $format = shift || 'Atom';
+       my %res = (action => lc($format));
+       my $matched_ref = 0;
+
+       # feed links are possible only for project views
+       return unless (defined $project);
+       # some views should link to OPML, or to generic project feed,
+       # or don't have specific feed yet (so they should use generic)
+       return if (!$action || $action =~ /^(?:tags|heads|forks|tag|search)$/x);
+
+       my $branch = undef;
+       # branches refs uses 'refs/' + $get_branch_refs()[x] + '/' prefix
+       # (fullname) to differentiate from tag links; this also makes
+       # possible to detect branch links
+       for my $ref (get_branch_refs()) {
+               if ((defined $hash_base && $hash_base =~ m!^refs/\Q$ref\E/(.*)$!) ||
+                   (defined $hash      && $hash      =~ m!^refs/\Q$ref\E/(.*)$!)) {
+                       $branch = $1;
+                       $matched_ref = $ref;
+                       last;
+               }
+       }
+       # find log type for feed description (title)
+       my $type = 'log';
+       if (defined $file_name) {
+               $type  = "history of $file_name";
+               $type .= "/" if ($action eq 'tree');
+               $type .= " on '$branch'" if (defined $branch);
+       } else {
+               $type = "log of $branch" if (defined $branch);
+       }
+
+       $res{-title} = $type;
+       $res{'hash'} = (defined $branch ? "refs/$matched_ref/$branch" : undef);
+       $res{'file_name'} = $file_name;
+
+       return %res;
+}
+
+## ----------------------------------------------------------------------
+## git utility subroutines, invoking git commands
+
+# returns path to the core git executable and the --git-dir parameter as list
+sub git_cmd {
+       $number_of_git_cmds++;
+       return $GIT, '--git-dir='.$git_dir;
+}
+
+# quote the given arguments for passing them to the shell
+# quote_command("command", "arg 1", "arg with ' and ! characters")
+# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
+# Try to avoid using this function wherever possible.
+sub quote_command {
+       return join(' ',
+               map { my $a = $_ =~ s/(['!])/'\\$1'/gr; "'$a'" } @_ );
+}
+
+# get HEAD ref of given project as hash
+sub git_get_head_hash {
+       return git_get_full_hash(shift, 'HEAD');
+}
+
+sub git_get_full_hash {
+       return git_get_hash(@_);
+}
+
+sub git_get_short_hash {
+       return git_get_hash(@_, '--short=7');
+}
+
+sub git_get_hash {
+       my ($project, $hash, @options) = @_;
+       my $o_git_dir = $git_dir;
+       my $retval = undef;
+       $git_dir = "$projectroot/$project";
+       if (open my $fd, '-|', git_cmd(), 'rev-parse',
+           '--verify', '-q', @options, $hash) {
+               $retval = <$fd>;
+               chomp $retval if defined $retval;
+               close $fd;
+       }
+       if (defined $o_git_dir) {
+               $git_dir = $o_git_dir;
+       }
+       return $retval;
+}
+
+# get type of given object
+sub git_get_type {
+       my $hash = shift;
+
+       open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
+       my $type = <$fd>;
+       close $fd or return;
+       chomp $type;
+       return $type;
+}
+
+# repository configuration
+our $config_file = '';
+our %config;
+
+# store multiple values for single key as anonymous array reference
+# single values stored directly in the hash, not as [ <value> ]
+sub hash_set_multi {
+       my ($hash, $key, $value) = @_;
+
+       if (!exists $hash->{$key}) {
+               $hash->{$key} = $value;
+       } elsif (!ref $hash->{$key}) {
+               $hash->{$key} = [ $hash->{$key}, $value ];
+       } else {
+               push @{$hash->{$key}}, $value;
+       }
+}
+
+# return hash of git project configuration
+# optionally limited to some section, e.g. 'gitweb'
+sub git_parse_project_config {
+       my $section_regexp = shift;
+       my %config;
+
+       local $/ = "\0";
+
+       open my $fh, "-|", git_cmd(), "config", '-z', '-l',
+               or return;
+
+       while (my $keyval = <$fh>) {
+               chomp $keyval;
+               my ($key, $value) = split(/\n/, $keyval, 2);
+
+               hash_set_multi(\%config, $key, $value)
+                       if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
+       }
+       close $fh;
+
+       return %config;
+}
+
+# convert config value to boolean: 'true' or 'false'
+# no value, number > 0, 'true' and 'yes' values are true
+# rest of values are treated as false (never as error)
+sub config_to_bool {
+       my $val = shift;
+
+       return 1 if !defined $val;             # section.key
+
+       # strip leading and trailing whitespace
+       $val =~ s/^\s+//;
+       $val =~ s/\s+$//;
+
+       return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
+               ($val =~ /^(?:true|yes)$/i));  # section.key = true
+}
+
+# convert config value to simple decimal number
+# an optional value suffix of 'k', 'm', or 'g' will cause the value
+# to be multiplied by 1024, 1048576, or 1073741824
+sub config_to_int {
+       my $val = shift;
+
+       # strip leading and trailing whitespace
+       $val =~ s/^\s+//;
+       $val =~ s/\s+$//;
+
+       if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
+               $unit = lc($unit);
+               # unknown unit is treated as 1
+               return $num * ($unit eq 'g' ? 1073741824 :
+                              $unit eq 'm' ?    1048576 :
+                              $unit eq 'k' ?       1024 : 1);
+       }
+       return $val;
+}
+
+# convert config value to array reference, if needed
+sub config_to_multi {
+       my $val = shift;
+
+       return ref($val) ? $val : (defined($val) ? [ $val ] : []);
+}
+
+sub git_get_project_config {
+       my ($key, $type) = @_;
+
+       return unless defined $git_dir;
+
+       # key sanity check
+       return unless ($key);
+       # only subsection, if exists, is case sensitive,
+       # and not lowercased by 'git config -z -l'
+       if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
+               $lo =~ s/_//g;
+               $key = join(".", lc($hi), $mi, lc($lo));
+               return if ($lo =~ /\W/ || $hi =~ /\W/);
+       } else {
+               $key = lc($key);
+               $key =~ s/_//g;
+               return if ($key =~ /\W/);
+       }
+       $key =~ s/^gitweb\.//;
+
+       # type sanity check
+       if (defined $type) {
+               $type =~ s/^--//;
+               $type = undef
+                       unless ($type eq 'bool' || $type eq 'int');
+       }
+
+       # get config
+       if (!defined $config_file ||
+           $config_file ne "$git_dir/config") {
+               %config = git_parse_project_config('gitweb');
+               $config_file = "$git_dir/config";
+       }
+
+       # check if config variable (key) exists
+       return unless exists $config{"gitweb.$key"};
+
+       # ensure given type
+       if (!defined $type) {
+               return $config{"gitweb.$key"};
+       } elsif ($type eq 'bool') {
+               # backward compatibility: 'git config --bool' returns true/false
+               return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
+       } elsif ($type eq 'int') {
+               return config_to_int($config{"gitweb.$key"});
+       }
+       return $config{"gitweb.$key"};
+}
+
+# get hash of given path at given ref
+sub git_get_hash_by_path {
+       my $base = shift;
+       my $path = shift || return undef;
+       my $type = shift;
+
+       $path =~ s,/+$,,;
+
+       open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
+               or die_error(500, "Open git-ls-tree failed");
+       my $line = <$fd>;
+       close $fd or return undef;
+
+       if (!defined $line) {
+               # there is no tree or hash given by $path at $base
+               return undef;
+       }
+
+       #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
+       $line =~ m/^([0-9]+) (.+) ($oid_regex)\t/;
+       if (defined $type && $type ne $2) {
+               # type doesn't match
+               return undef;
+       }
+       return $3;
+}
+
+# get path of entry with given hash at given tree-ish (ref)
+# used to get 'from' filename for combined diff (merge commit) for renames
+sub git_get_path_by_hash {
+       my $base = shift || return;
+       my $hash = shift || return;
+
+       local $/ = "\0";
+
+       open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
+               or return undef;
+       while (my $line = <$fd>) {
+               chomp $line;
+
+               #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
+               #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
+               if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
+                       close $fd;
+                       return $1;
+               }
+       }
+       close $fd;
+       return undef;
+}
+
+## ......................................................................
+## git utility functions, directly accessing git repository
+
+# get the value of config variable either from file named as the variable
+# itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
+# configuration variable in the repository config file.
+sub git_get_file_or_project_config {
+       my ($path, $name) = @_;
+
+       $git_dir = "$projectroot/$path";
+       open my $fd, '<', "$git_dir/$name"
+               or return git_get_project_config($name);
+       my $conf = <$fd>;
+       close $fd;
+       if (defined $conf) {
+               chomp $conf;
+       }
+       return $conf;
+}
+
+sub git_get_project_description {
+       my $path = shift;
+       return git_get_file_or_project_config($path, 'description');
+}
+
+sub git_get_project_category {
+       my $path = shift;
+       return git_get_file_or_project_config($path, 'category');
+}
+
+
+# supported formats:
+# * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
+#   - if its contents is a number, use it as tag weight,
+#   - otherwise add a tag with weight 1
+# * $GIT_DIR/ctags file, each line is a tag (with weight 1)
+#   the same value multiple times increases tag weight
+# * `gitweb.ctag' multi-valued repo config variable
+sub git_get_project_ctags {
+       my $project = shift;
+       my $ctags = {};
+
+       $git_dir = "$projectroot/$project";
+       if (opendir my $dh, "$git_dir/ctags") {
+               my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
+               foreach my $tagfile (@files) {
+                       open my $ct, '<', $tagfile
+                               or next;
+                       my $val = <$ct>;
+                       chomp $val if $val;
+                       close $ct;
+
+                       (my $ctag = $tagfile) =~ s#.*/##;
+                       if ($val =~ /^\d+$/) {
+                               $ctags->{$ctag} = $val;
+                       } else {
+                               $ctags->{$ctag} = 1;
+                       }
+               }
+               closedir $dh;
+
+       } elsif (open my $fh, '<', "$git_dir/ctags") {
+               while (my $line = <$fh>) {
+                       chomp $line;
+                       $ctags->{$line}++ if $line;
+               }
+               close $fh;
+
+       } else {
+               my $taglist = config_to_multi(git_get_project_config('ctag'));
+               foreach my $tag (@$taglist) {
+                       $ctags->{$tag}++;
+               }
+       }
+
+       return $ctags;
+}
+
+# return hash, where keys are content tags ('ctags'),
+# and values are sum of weights of given tag in every project
+sub git_gather_all_ctags {
+       my $projects = shift;
+       my $ctags = {};
+
+       foreach my $p (@$projects) {
+               foreach my $ct (keys %{$p->{'ctags'}}) {
+                       $ctags->{$ct} += $p->{'ctags'}->{$ct};
+               }
+       }
+
+       return $ctags;
+}
+
+sub git_populate_project_tagcloud {
+       my $ctags = shift;
+
+       # First, merge different-cased tags; tags vote on casing
+       my %ctags_lc;
+       foreach (keys %$ctags) {
+               $ctags_lc{lc $_}->{count} += $ctags->{$_};
+               if (not $ctags_lc{lc $_}->{topcount}
+                   or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
+                       $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
+                       $ctags_lc{lc $_}->{topname} = $_;
+               }
+       }
+
+       my $cloud;
+       my $matched = $input_params{'ctag'};
+       if (eval { require HTML::TagCloud; 1; }) {
+               $cloud = HTML::TagCloud->new;
+               foreach my $ctag (sort keys %ctags_lc) {
+                       # Pad the title with spaces so that the cloud looks
+                       # less crammed.
+                       my $title = esc_html($ctags_lc{$ctag}->{topname});
+                       $title =~ s/ /&nbsp;/g;
+                       $title =~ s/^/&nbsp;/g;
+                       $title =~ s/$/&nbsp;/g;
+                       if (defined $matched && $matched eq $ctag) {
+                               $title = qq(<span class="match">$title</span>);
+                       }
+                       $cloud->add($title, href(project=>undef, ctag=>$ctag),
+                                   $ctags_lc{$ctag}->{count});
+               }
+       } else {
+               $cloud = {};
+               foreach my $ctag (keys %ctags_lc) {
+                       my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
+                       if (defined $matched && $matched eq $ctag) {
+                               $title = qq(<span class="match">$title</span>);
+                       }
+                       $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
+                       $cloud->{$ctag}{ctag} =
+                               $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
+               }
+       }
+       return $cloud;
+}
+
+sub git_show_project_tagcloud {
+       my ($cloud, $count) = @_;
+       if (ref $cloud eq 'HTML::TagCloud') {
+               return $cloud->html_and_css($count);
+       } else {
+               my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
+               return
+                       '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
+                       join (', ', map {
+                               $cloud->{$_}->{'ctag'}
+                       } splice(@tags, 0, $count)) .
+                       '</div>';
+       }
+}
+
+sub git_get_project_url_list {
+       my $path = shift;
+
+       $git_dir = "$projectroot/$path";
+       open my $fd, '<', "$git_dir/cloneurl"
+               or return wantarray ?
+               @{ config_to_multi(git_get_project_config('url')) } :
+                  config_to_multi(git_get_project_config('url'));
+       my @git_project_url_list = map { chomp; $_ } <$fd>;
+       close $fd;
+
+       return wantarray ? @git_project_url_list : \@git_project_url_list;
+}
+
+sub git_get_projects_list {
+       my $filter = shift || '';
+       my $paranoid = shift;
+       my @list;
+
+       if (-d $projects_list) {
+               # search in directory
+               my $dir = $projects_list;
+               # remove the trailing "/"
+               $dir =~ s!/+$!!;
+               my $pfxlen = length("$dir");
+               my $pfxdepth = ($dir =~ tr!/!!);
+               # when filtering, search only given subdirectory
+               if ($filter && !$paranoid) {
+                       $dir .= "/$filter";
+                       $dir =~ s!/+$!!;
+               }
+
+               File::Find::find({
+                       follow_fast => 1, # follow symbolic links
+                       follow_skip => 2, # ignore duplicates
+                       dangling_symlinks => 0, # ignore dangling symlinks, silently
+                       wanted => sub {
+                               # global variables
+                               our $project_maxdepth;
+                               our $projectroot;
+                               # skip project-list toplevel, if we get it.
+                               return if (m!^[/.]$!);
+                               # only directories can be git repositories
+                               return unless (-d $_);
+                               # need search permission
+                               return unless (-x $_);
+                               # don't traverse too deep (Find is super slow on os x)
+                               # $project_maxdepth excludes depth of $projectroot
+                               if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
+                                       $File::Find::prune = 1;
+                                       return;
+                               }
+
+                               my $path = substr($File::Find::name, $pfxlen + 1);
+                               # paranoidly only filter here
+                               if ($paranoid && $filter && $path !~ m!^\Q$filter\E/!) {
+                                       next;
+                               }
+                               # we check related file in $projectroot
+                               if (check_export_ok("$projectroot/$path")) {
+                                       push @list, { path => $path };
+                                       $File::Find::prune = 1;
+                               }
+                       },
+               }, "$dir");
+
+       } elsif (-f $projects_list) {
+               # read from file(url-encoded):
+               # 'git%2Fgit.git Linus+Torvalds'
+               # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
+               # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
+               open my $fd, '<', $projects_list or return;
+       PROJECT:
+               while (my $line = <$fd>) {
+                       chomp $line;
+                       my ($path, $owner) = split ' ', $line;
+                       $path = unescape($path);
+                       $owner = unescape($owner);
+                       if (!defined $path) {
+                               next;
+                       }
+                       # if $filter is rpovided, check if $path begins with $filter
+                       if ($filter && $path !~ m!^\Q$filter\E/!) {
+                               next;
+                       }
+                       if (check_export_ok("$projectroot/$path")) {
+                               my $pr = {
+                                       path => $path
+                               };
+                               if ($owner) {
+                                       $pr->{'owner'} = to_utf8($owner);
+                               }
+                               push @list, $pr;
+                       }
+               }
+               close $fd;
+       }
+       return @list;
+}
+
+# written with help of Tree::Trie module (Perl Artistic License, GPL compatible)
+# as side effects it sets 'forks' field to list of forks for forked projects
+sub filter_forks_from_projects_list {
+       my $projects = shift;
+
+       my %trie; # prefix tree of directories (path components)
+       # generate trie out of those directories that might contain forks
+       foreach my $pr (@$projects) {
+               my $path = $pr->{'path'};
+               $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
+               next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
+               next unless ($path);      # skip '.git' repository: tests, git-instaweb
+               next unless (-d "$projectroot/$path"); # containing directory exists
+               $pr->{'forks'} = [];      # there can be 0 or more forks of project
+
+               # add to trie
+               my @dirs = split('/', $path);
+               # walk the trie, until either runs out of components or out of trie
+               my $ref = \%trie;
+               while (scalar @dirs &&
+                      exists($ref->{$dirs[0]})) {
+                       $ref = $ref->{shift @dirs};
+               }
+               # create rest of trie structure from rest of components
+               foreach my $dir (@dirs) {
+                       $ref = $ref->{$dir} = {};
+               }
+               # create end marker, store $pr as a data
+               $ref->{''} = $pr if (!exists $ref->{''});
+       }
+
+       # filter out forks, by finding shortest prefix match for paths
+       my @filtered;
+ PROJECT:
+       foreach my $pr (@$projects) {
+               # trie lookup
+               my $ref = \%trie;
+       DIR:
+               foreach my $dir (split('/', $pr->{'path'})) {
+                       if (exists $ref->{''}) {
+                               # found [shortest] prefix, is a fork - skip it
+                               push @{$ref->{''}{'forks'}}, $pr;
+                               next PROJECT;
+                       }
+                       if (!exists $ref->{$dir}) {
+                               # not in trie, cannot have prefix, not a fork
+                               push @filtered, $pr;
+                               next PROJECT;
+                       }
+                       # If the dir is there, we just walk one step down the trie.
+                       $ref = $ref->{$dir};
+               }
+               # we ran out of trie
+               # (shouldn't happen: it's either no match, or end marker)
+               push @filtered, $pr;
+       }
+
+       return @filtered;
+}
+
+# note: fill_project_list_info must be run first,
+# for 'descr_long' and 'ctags' to be filled
+sub search_projects_list {
+       my ($projlist, %opts) = @_;
+       my $tagfilter  = $opts{'tagfilter'};
+       my $search_re = $opts{'search_regexp'};
+
+       return @$projlist
+               unless ($tagfilter || $search_re);
+
+       # searching projects require filling to be run before it;
+       fill_project_list_info($projlist,
+                              $tagfilter  ? 'ctags' : (),
+                              $search_re ? ('path', 'descr') : ());
+       my @projects;
+ PROJECT:
+       foreach my $pr (@$projlist) {
+
+               if ($tagfilter) {
+                       next unless ref($pr->{'ctags'}) eq 'HASH';
+                       next unless
+                               grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
+               }
+
+               if ($search_re) {
+                       next unless
+                               $pr->{'path'} =~ /$search_re/ ||
+                               $pr->{'descr_long'} =~ /$search_re/;
+               }
+
+               push @projects, $pr;
+       }
+
+       return @projects;
+}
+
+our $gitweb_project_owner = undef;
+sub git_get_project_list_from_file {
+
+       return if (defined $gitweb_project_owner);
+
+       $gitweb_project_owner = {};
+       # read from file (url-encoded):
+       # 'git%2Fgit.git Linus+Torvalds'
+       # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
+       # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
+       if (-f $projects_list) {
+               open(my $fd, '<', $projects_list);
+               while (my $line = <$fd>) {
+                       chomp $line;
+                       my ($pr, $ow) = split ' ', $line;
+                       $pr = unescape($pr);
+                       $ow = unescape($ow);
+                       $gitweb_project_owner->{$pr} = to_utf8($ow);
+               }
+               close $fd;
+       }
+}
+
+sub git_get_project_owner {
+       my $project = shift;
+       my $owner;
+
+       return undef unless $project;
+       $git_dir = "$projectroot/$project";
+
+       if (!defined $gitweb_project_owner) {
+               git_get_project_list_from_file();
+       }
+
+       if (exists $gitweb_project_owner->{$project}) {
+               $owner = $gitweb_project_owner->{$project};
+       }
+       if (!defined $owner){
+               $owner = git_get_project_config('owner');
+       }
+       if (!defined $owner) {
+               $owner = get_file_owner("$git_dir");
+       }
+
+       return $owner;
+}
+
+sub git_get_last_activity {
+       my ($path) = @_;
+       my $fd;
+
+       $git_dir = "$projectroot/$path";
+       open($fd, "-|", git_cmd(), 'for-each-ref',
+            '--format=%(committer)',
+            '--sort=-committerdate',
+            '--count=1',
+            map { "refs/$_" } get_branch_refs ()) or return;
+       my $most_recent = <$fd>;
+       close $fd or return;
+       if (defined $most_recent &&
+           $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
+               my $timestamp = $1;
+               my $age = time - $timestamp;
+               return ($age, age_string($age));
+       }
+       return (undef, undef);
+}
+
+# Implementation note: when a single remote is wanted, we cannot use 'git
+# remote show -n' because that command always work (assuming it's a remote URL
+# if it's not defined), and we cannot use 'git remote show' because that would
+# try to make a network roundtrip. So the only way to find if that particular
+# remote is defined is to walk the list provided by 'git remote -v' and stop if
+# and when we find what we want.
+sub git_get_remotes_list {
+       my $wanted = shift;
+       my %remotes = ();
+
+       open my $fd, '-|' , git_cmd(), 'remote', '-v';
+       return unless $fd;
+       while (my $remote = <$fd>) {
+               chomp $remote;
+               $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
+               next if $wanted and not $remote eq $wanted;
+               my ($url, $key) = ($1, $2);
+
+               $remotes{$remote} ||= { 'heads' => () };
+               $remotes{$remote}{$key} = $url;
+       }
+       close $fd or return;
+       return wantarray ? %remotes : \%remotes;
+}
+
+# Takes a hash of remotes as first parameter and fills it by adding the
+# available remote heads for each of the indicated remotes.
+sub fill_remote_heads {
+       my $remotes = shift;
+       my @heads = map { "remotes/$_" } keys %$remotes;
+       my @remoteheads = git_get_heads_list(undef, @heads);
+       foreach my $remote (keys %$remotes) {
+               $remotes->{$remote}{'heads'} = [ grep {
+                       $_->{'name'} =~ s!^$remote/!!
+                       } @remoteheads ];
+       }
+}
+
+sub git_get_references {
+       my $type = shift || "";
+       my %refs;
+       # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
+       # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
+       open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
+               ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
+               or return;
+
+       while (my $line = <$fd>) {
+               chomp $line;
+               if ($line =~ m!^($oid_regex)\srefs/($type.*)$!) {
+                       if (defined $refs{$1}) {
+                               push @{$refs{$1}}, $2;
+                       } else {
+                               $refs{$1} = [ $2 ];
+                       }
+               }
+       }
+       close $fd or return;
+       return \%refs;
+}
+
+sub git_get_rev_name_tags {
+       my $hash = shift || return undef;
+
+       open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
+               or return;
+       my $name_rev = <$fd>;
+       close $fd;
+
+       if ($name_rev =~ m|^$hash tags/(.*)$|) {
+               return $1;
+       } else {
+               # catches also '$hash undefined' output
+               return undef;
+       }
+}
+
+## ----------------------------------------------------------------------
+## parse to hash functions
+
+sub parse_date {
+       my $epoch = shift;
+       my $tz = shift || "-0000";
+
+       my %date;
+       my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
+       my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
+       my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
+       $date{'hour'} = $hour;
+       $date{'minute'} = $min;
+       $date{'mday'} = $mday;
+       $date{'day'} = $days[$wday];
+       $date{'month'} = $months[$mon];
+       $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
+                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
+       $date{'mday-time'} = sprintf "%d %s %02d:%02d",
+                            $mday, $months[$mon], $hour ,$min;
+       $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
+                            1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
+
+       my ($tz_sign, $tz_hour, $tz_min) =
+               ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
+       $tz_sign = ($tz_sign eq '-' ? -1 : +1);
+       my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
+       ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
+       $date{'hour_local'} = $hour;
+       $date{'minute_local'} = $min;
+       $date{'tz_local'} = $tz;
+       $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
+                                 1900+$year, $mon+1, $mday,
+                                 $hour, $min, $sec, $tz);
+       return %date;
+}
+
+sub hide_mailaddrs_if_private {
+       my $line = shift;
+       return $line unless gitweb_check_feature('email-privacy');
+       $line =~ s/<[^@>]+@[^>]+>/<redacted>/g;
+       return $line;
+}
+
+sub parse_tag {
+       my $tag_id = shift;
+       my %tag;
+       my @comment;
+
+       open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
+       $tag{'id'} = $tag_id;
+       while (my $line = <$fd>) {
+               chomp $line;
+               if ($line =~ m/^object ($oid_regex)$/) {
+                       $tag{'object'} = $1;
+               } elsif ($line =~ m/^type (.+)$/) {
+                       $tag{'type'} = $1;
+               } elsif ($line =~ m/^tag (.+)$/) {
+                       $tag{'name'} = $1;
+               } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
+                       $tag{'author'} = hide_mailaddrs_if_private($1);
+                       $tag{'author_epoch'} = $2;
+                       $tag{'author_tz'} = $3;
+                       if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
+                               $tag{'author_name'}  = $1;
+                               $tag{'author_email'} = $2;
+                       } else {
+                               $tag{'author_name'} = $tag{'author'};
+                       }
+               } elsif ($line =~ m/--BEGIN/) {
+                       push @comment, $line;
+                       last;
+               } elsif ($line eq "") {
+                       last;
+               }
+       }
+       push @comment, <$fd>;
+       $tag{'comment'} = \@comment;
+       close $fd or return;
+       if (!defined $tag{'name'}) {
+               return
+       };
+       return %tag
+}
+
+sub parse_commit_text {
+       my ($commit_text, $withparents) = @_;
+       my @commit_lines = split '\n', $commit_text;
+       my %co;
+
+       pop @commit_lines; # Remove '\0'
+
+       if (! @commit_lines) {
+               return;
+       }
+
+       my $header = shift @commit_lines;
+       if ($header !~ m/^$oid_regex/) {
+               return;
+       }
+       ($co{'id'}, my @parents) = split ' ', $header;
+       while (my $line = shift @commit_lines) {
+               last if $line eq "\n";
+               if ($line =~ m/^tree ($oid_regex)$/) {
+                       $co{'tree'} = $1;
+               } elsif ((!defined $withparents) && ($line =~ m/^parent ($oid_regex)$/)) {
+                       push @parents, $1;
+               } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
+                       $co{'author'} = hide_mailaddrs_if_private(to_utf8($1));
+                       $co{'author_epoch'} = $2;
+                       $co{'author_tz'} = $3;
+                       if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
+                               $co{'author_name'}  = $1;
+                               $co{'author_email'} = $2;
+                       } else {
+                               $co{'author_name'} = $co{'author'};
+                       }
+               } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
+                       $co{'committer'} = hide_mailaddrs_if_private(to_utf8($1));
+                       $co{'committer_epoch'} = $2;
+                       $co{'committer_tz'} = $3;
+                       if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
+                               $co{'committer_name'}  = $1;
+                               $co{'committer_email'} = $2;
+                       } else {
+                               $co{'committer_name'} = $co{'committer'};
+                       }
+               }
+       }
+       if (!defined $co{'tree'}) {
+               return;
+       };
+       $co{'parents'} = \@parents;
+       $co{'parent'} = $parents[0];
+
+       foreach my $title (@commit_lines) {
+               $title =~ s/^    //;
+               if ($title ne "") {
+                       $co{'title'} = chop_str($title, 80, 5);
+                       $co{'title_short'} = chop_str($title, 50, 5);
+                       last;
+               }
+       }
+       if (! defined $co{'title'} || $co{'title'} eq "") {
+               $co{'title'} = $co{'title_short'} = '(no commit message)';
+       }
+       # remove added spaces, redact e-mail addresses if applicable.
+       foreach my $line (@commit_lines) {
+               $line =~ s/^    //;
+               $line = hide_mailaddrs_if_private($line);
+       }
+       $co{'comment'} = \@commit_lines;
+
+       my $age = time - $co{'committer_epoch'};
+       $co{'age'} = $age;
+       $co{'age_string'} = age_string($age);
+       my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
+       if ($age > 60*60*24*7*2) {
+               $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
+               $co{'age_string_age'} = $co{'age_string'};
+       } else {
+               $co{'age_string_date'} = $co{'age_string'};
+               $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
+       }
+       return %co;
+}
+
+sub parse_commit {
+       my ($commit_id) = @_;
+       my %co;
+
+       local $/ = "\0";
+
+       open my $fd, "-|", git_cmd(), "rev-list",
+               "--parents",
+               "--header",
+               "--max-count=1",
+               $commit_id,
+               "--",
+               or die_error(500, "Open git-rev-list failed");
+       %co = parse_commit_text(<$fd>, 1);
+       close $fd;
+
+       return %co;
+}
+
+sub parse_commits {
+       my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
+       my @cos;
+
+       $maxcount ||= 1;
+       $skip ||= 0;
+
+       local $/ = "\0";
+
+       open my $fd, "-|", git_cmd(), "rev-list",
+               "--header",
+               @args,
+               ("--max-count=" . $maxcount),
+               ("--skip=" . $skip),
+               @extra_options,
+               $commit_id,
+               "--",
+               ($filename ? ($filename) : ())
+               or die_error(500, "Open git-rev-list failed");
+       while (my $line = <$fd>) {
+               my %co = parse_commit_text($line);
+               push @cos, \%co;
+       }
+       close $fd;
+
+       return wantarray ? @cos : \@cos;
+}
+
+# parse line of git-diff-tree "raw" output
+sub parse_difftree_raw_line {
+       my $line = shift;
+       my %res;
+
+       # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
+       # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
+       if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ($oid_regex) ($oid_regex) (.)([0-9]{0,3})\t(.*)$/) {
+               $res{'from_mode'} = $1;
+               $res{'to_mode'} = $2;
+               $res{'from_id'} = $3;
+               $res{'to_id'} = $4;
+               $res{'status'} = $5;
+               $res{'similarity'} = $6;
+               if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
+                       ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
+               } else {
+                       $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
+               }
+       }
+       # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
+       # combined diff (for merge commit)
+       elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:$oid_regex )+)([a-zA-Z]+)\t(.*)$//) {
+               $res{'nparents'}  = length($1);
+               $res{'from_mode'} = [ split(' ', $2) ];
+               $res{'to_mode'} = pop @{$res{'from_mode'}};
+               $res{'from_id'} = [ split(' ', $3) ];
+               $res{'to_id'} = pop @{$res{'from_id'}};
+               $res{'status'} = [ split('', $4) ];
+               $res{'to_file'} = unquote($5);
+       }
+       # 'c512b523472485aef4fff9e57b229d9d243c967f'
+       elsif ($line =~ m/^($oid_regex)$/) {
+               $res{'commit'} = $1;
+       }
+
+       return wantarray ? %res : \%res;
+}
+
+# wrapper: return parsed line of git-diff-tree "raw" output
+# (the argument might be raw line, or parsed info)
+sub parsed_difftree_line {
+       my $line_or_ref = shift;
+
+       if (ref($line_or_ref) eq "HASH") {
+               # pre-parsed (or generated by hand)
+               return $line_or_ref;
+       } else {
+               return parse_difftree_raw_line($line_or_ref);
+       }
+}
+
+# parse line of git-ls-tree output
+sub parse_ls_tree_line {
+       my $line = shift;
+       my %opts = @_;
+       my %res;
+
+       if ($opts{'-l'}) {
+               #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
+               $line =~ m/^([0-9]+) (.+) ($oid_regex) +(-|[0-9]+)\t(.+)$/s;
+
+               $res{'mode'} = $1;
+               $res{'type'} = $2;
+               $res{'hash'} = $3;
+               $res{'size'} = $4;
+               if ($opts{'-z'}) {
+                       $res{'name'} = $5;
+               } else {
+                       $res{'name'} = unquote($5);
+               }
+       } else {
+               #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
+               $line =~ m/^([0-9]+) (.+) ($oid_regex)\t(.+)$/s;
+
+               $res{'mode'} = $1;
+               $res{'type'} = $2;
+               $res{'hash'} = $3;
+               if ($opts{'-z'}) {
+                       $res{'name'} = $4;
+               } else {
+                       $res{'name'} = unquote($4);
+               }
+       }
+
+       return wantarray ? %res : \%res;
+}
+
+# generates _two_ hashes, references to which are passed as 2 and 3 argument
+sub parse_from_to_diffinfo {
+       my ($diffinfo, $from, $to, @parents) = @_;
+
+       if ($diffinfo->{'nparents'}) {
+               # combined diff
+               $from->{'file'} = [];
+               $from->{'href'} = [];
+               fill_from_file_info($diffinfo, @parents)
+                       unless exists $diffinfo->{'from_file'};
+               for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
+                       $from->{'file'}[$i] =
+                               defined $diffinfo->{'from_file'}[$i] ?
+                                       $diffinfo->{'from_file'}[$i] :
+                                       $diffinfo->{'to_file'};
+                       if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
+                               $from->{'href'}[$i] = href(action=>"blob",
+                                                          hash_base=>$parents[$i],
+                                                          hash=>$diffinfo->{'from_id'}[$i],
+                                                          file_name=>$from->{'file'}[$i]);
+                       } else {
+                               $from->{'href'}[$i] = undef;
+                       }
+               }
+       } else {
+               # ordinary (not combined) diff
+               $from->{'file'} = $diffinfo->{'from_file'};
+               if ($diffinfo->{'status'} ne "A") { # not new (added) file
+                       $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
+                                              hash=>$diffinfo->{'from_id'},
+                                              file_name=>$from->{'file'});
+               } else {
+                       delete $from->{'href'};
+               }
+       }
+
+       $to->{'file'} = $diffinfo->{'to_file'};
+       if (!is_deleted($diffinfo)) { # file exists in result
+               $to->{'href'} = href(action=>"blob", hash_base=>$hash,
+                                    hash=>$diffinfo->{'to_id'},
+                                    file_name=>$to->{'file'});
+       } else {
+               delete $to->{'href'};
+       }
+}
+
+## ......................................................................
+## parse to array of hashes functions
+
+sub git_get_heads_list {
+       my ($limit, @classes) = @_;
+       @classes = get_branch_refs() unless @classes;
+       my @patterns = map { "refs/$_" } @classes;
+       my @headslist;
+
+       open my $fd, '-|', git_cmd(), 'for-each-ref',
+               ($limit ? '--count='.($limit+1) : ()),
+               '--sort=-HEAD', '--sort=-committerdate',
+               '--format=%(objectname) %(refname) %(subject)%00%(committer)',
+               @patterns
+               or return;
+       while (my $line = <$fd>) {
+               my %ref_item;
+
+               chomp $line;
+               my ($refinfo, $committerinfo) = split(/\0/, $line);
+               my ($hash, $name, $title) = split(' ', $refinfo, 3);
+               my ($committer, $epoch, $tz) =
+                       ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
+               $ref_item{'fullname'}  = $name;
+               my $strip_refs = join '|', map { quotemeta } get_branch_refs();
+               $name =~ s!^refs/($strip_refs|remotes)/!!;
+               $ref_item{'name'} = $name;
+               # for refs neither in 'heads' nor 'remotes' we want to
+               # show their ref dir
+               my $ref_dir = (defined $1) ? $1 : '';
+               if ($ref_dir ne '' and $ref_dir ne 'heads' and $ref_dir ne 'remotes') {
+                   $ref_item{'name'} .= ' (' . $ref_dir . ')';
+               }
+
+               $ref_item{'id'}    = $hash;
+               $ref_item{'title'} = $title || '(no commit message)';
+               $ref_item{'epoch'} = $epoch;
+               if ($epoch) {
+                       $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
+               } else {
+                       $ref_item{'age'} = "unknown";
+               }
+
+               push @headslist, \%ref_item;
+       }
+       close $fd;
+
+       return wantarray ? @headslist : \@headslist;
+}
+
+sub git_get_tags_list {
+       my $limit = shift;
+       my @tagslist;
+
+       open my $fd, '-|', git_cmd(), 'for-each-ref',
+               ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
+               '--format=%(objectname) %(objecttype) %(refname) '.
+               '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
+               'refs/tags'
+               or return;
+       while (my $line = <$fd>) {
+               my %ref_item;
+
+               chomp $line;
+               my ($refinfo, $creatorinfo) = split(/\0/, $line);
+               my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
+               my ($creator, $epoch, $tz) =
+                       ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
+               $ref_item{'fullname'} = $name;
+               $name =~ s!^refs/tags/!!;
+
+               $ref_item{'type'} = $type;
+               $ref_item{'id'} = $id;
+               $ref_item{'name'} = $name;
+               if ($type eq "tag") {
+                       $ref_item{'subject'} = $title;
+                       $ref_item{'reftype'} = $reftype;
+                       $ref_item{'refid'}   = $refid;
+               } else {
+                       $ref_item{'reftype'} = $type;
+                       $ref_item{'refid'}   = $id;
+               }
+
+               if ($type eq "tag" || $type eq "commit") {
+                       $ref_item{'epoch'} = $epoch;
+                       if ($epoch) {
+                               $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
+                       } else {
+                               $ref_item{'age'} = "unknown";
+                       }
+               }
+
+               push @tagslist, \%ref_item;
+       }
+       close $fd;
+
+       return wantarray ? @tagslist : \@tagslist;
+}
+
+## ----------------------------------------------------------------------
+## filesystem-related functions
+
+sub get_file_owner {
+       my $path = shift;
+
+       my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
+       my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
+       if (!defined $gcos) {
+               return undef;
+       }
+       my $owner = $gcos;
+       $owner =~ s/[,;].*$//;
+       return to_utf8($owner);
+}
+
+# assume that file exists
+sub insert_file {
+       my $filename = shift;
+
+       open my $fd, '<', $filename;
+       print map { to_utf8($_) } <$fd>;
+       close $fd;
+}
+
+## ......................................................................
+## mimetype related functions
+
+sub mimetype_guess_file {
+       my $filename = shift;
+       my $mimemap = shift;
+       -r $mimemap or return undef;
+
+       my %mimemap;
+       open(my $mh, '<', $mimemap) or return undef;
+       while (<$mh>) {
+               next if m/^#/; # skip comments
+               my ($mimetype, @exts) = split(/\s+/);
+               foreach my $ext (@exts) {
+                       $mimemap{$ext} = $mimetype;
+               }
+       }
+       close($mh);
+
+       $filename =~ /\.([^.]*)$/;
+       return $mimemap{$1};
+}
+
+sub mimetype_guess {
+       my $filename = shift;
+       my $mime;
+       $filename =~ /\./ or return undef;
+
+       if ($mimetypes_file) {
+               my $file = $mimetypes_file;
+               if ($file !~ m!^/!) { # if it is relative path
+                       # it is relative to project
+                       $file = "$projectroot/$project/$file";
+               }
+               $mime = mimetype_guess_file($filename, $file);
+       }
+       $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
+       return $mime;
+}
+
+sub blob_mimetype {
+       my $fd = shift;
+       my $filename = shift;
+
+       if ($filename) {
+               my $mime = mimetype_guess($filename);
+               $mime and return $mime;
+       }
+
+       # just in case
+       return $default_blob_plain_mimetype unless $fd;
+
+       if (-T $fd) {
+               return 'text/plain';
+       } elsif (! $filename) {
+               return 'application/octet-stream';
+       } elsif ($filename =~ m/\.png$/i) {
+               return 'image/png';
+       } elsif ($filename =~ m/\.gif$/i) {
+               return 'image/gif';
+       } elsif ($filename =~ m/\.jpe?g$/i) {
+               return 'image/jpeg';
+       } else {
+               return 'application/octet-stream';
+       }
+}
+
+sub blob_contenttype {
+       my ($fd, $file_name, $type) = @_;
+
+       $type ||= blob_mimetype($fd, $file_name);
+       if ($type eq 'text/plain' && defined $default_text_plain_charset) {
+               $type .= "; charset=$default_text_plain_charset";
+       }
+
+       return $type;
+}
+
+# guess file syntax for syntax highlighting; return undef if no highlighting
+# the name of syntax can (in the future) depend on syntax highlighter used
+sub guess_file_syntax {
+       my ($highlight, $file_name) = @_;
+       return undef unless ($highlight && defined $file_name);
+       my $basename = basename($file_name, '.in');
+       return $highlight_basename{$basename}
+               if exists $highlight_basename{$basename};
+
+       $basename =~ /\.([^.]*)$/;
+       my $ext = $1 or return undef;
+       return $highlight_ext{$ext}
+               if exists $highlight_ext{$ext};
+
+       return undef;
+}
+
+# run highlighter and return FD of its output,
+# or return original FD if no highlighting
+sub run_highlighter {
+       my ($fd, $highlight, $syntax) = @_;
+       return $fd unless ($highlight);
+
+       close $fd;
+       my $syntax_arg = (defined $syntax) ? "--syntax $syntax" : "--force";
+       open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
+                 quote_command($^X, '-CO', '-MEncode=decode,FB_DEFAULT', '-pse',
+                   '$_ = decode($fe, $_, FB_DEFAULT) if !utf8::decode($_);',
+                   '--', "-fe=$fallback_encoding")." | ".
+                 quote_command($highlight_bin).
+                 " --replace-tabs=8 --fragment $syntax_arg |"
+               or die_error(500, "Couldn't open file or run syntax highlighter");
+       return $fd;
+}
+
+## ======================================================================
+## functions printing HTML: header, footer, error page
+
+sub get_page_title {
+       my $title = to_utf8($site_name);
+
+       unless (defined $project) {
+               if (defined $project_filter) {
+                       $title .= " - projects in '" . esc_path($project_filter) . "'";
+               }
+               return $title;
+       }
+       $title .= " - " . to_utf8($project);
+
+       return $title unless (defined $action);
+       $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
+
+       return $title unless (defined $file_name);
+       $title .= " - " . esc_path($file_name);
+       if ($action eq "tree" && $file_name !~ m|/$|) {
+               $title .= "/";
+       }
+
+       return $title;
+}
+
+sub get_content_type_html {
+       # require explicit support from the UA if we are to send the page as
+       # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
+       # we have to do this because MSIE sometimes globs '*/*', pretending to
+       # support xhtml+xml but choking when it gets what it asked for.
+       if (defined $cgi->http('HTTP_ACCEPT') &&
+           $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
+           $cgi->Accept('application/xhtml+xml') != 0) {
+               return 'application/xhtml+xml';
+       } else {
+               return 'text/html';
+       }
+}
+
+sub print_feed_meta {
+       if (defined $project) {
+               my %href_params = get_feed_info();
+               if (!exists $href_params{'-title'}) {
+                       $href_params{'-title'} = 'log';
+               }
+
+               foreach my $format (qw(RSS Atom)) {
+                       my $type = lc($format);
+                       my %link_attr = (
+                               '-rel' => 'alternate',
+                               '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
+                               '-type' => "application/$type+xml"
+                       );
+
+                       $href_params{'extra_options'} = undef;
+                       $href_params{'action'} = $type;
+                       $link_attr{'-href'} = esc_attr(href(%href_params));
+                       print "<link ".
+                             "rel=\"$link_attr{'-rel'}\" ".
+                             "title=\"$link_attr{'-title'}\" ".
+                             "href=\"$link_attr{'-href'}\" ".
+                             "type=\"$link_attr{'-type'}\" ".
+                             "/>\n";
+
+                       $href_params{'extra_options'} = '--no-merges';
+                       $link_attr{'-href'} = esc_attr(href(%href_params));
+                       $link_attr{'-title'} .= ' (no merges)';
+                       print "<link ".
+                             "rel=\"$link_attr{'-rel'}\" ".
+                             "title=\"$link_attr{'-title'}\" ".
+                             "href=\"$link_attr{'-href'}\" ".
+                             "type=\"$link_attr{'-type'}\" ".
+                             "/>\n";
+               }
+
+       } else {
+               printf('<link rel="alternate" title="%s projects list" '.
+                      'href="%s" type="text/plain; charset=utf-8" />'."\n",
+                      esc_attr($site_name),
+                      esc_attr(href(project=>undef, action=>"project_index")));
+               printf('<link rel="alternate" title="%s projects feeds" '.
+                      'href="%s" type="text/x-opml" />'."\n",
+                      esc_attr($site_name),
+                      esc_attr(href(project=>undef, action=>"opml")));
+       }
+}
+
+sub print_header_links {
+       my $status = shift;
+
+       # print out each stylesheet that exist, providing backwards capability
+       # for those people who defined $stylesheet in a config file
+       if (defined $stylesheet) {
+               print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
+       } else {
+               foreach my $stylesheet (@stylesheets) {
+                       next unless $stylesheet;
+                       print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
+               }
+       }
+       print_feed_meta()
+               if ($status eq '200 OK');
+       if (defined $favicon) {
+               print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
+       }
+}
+
+sub print_nav_breadcrumbs_path {
+       my $dirprefix = undef;
+       while (my $part = shift) {
+               $dirprefix .= "/" if defined $dirprefix;
+               $dirprefix .= $part;
+               print $cgi->a({-href => href(project => undef,
+                                            project_filter => $dirprefix,
+                                            action => "project_list")},
+                             esc_html($part)) . " / ";
+       }
+}
+
+sub print_nav_breadcrumbs {
+       my %opts = @_;
+
+       for my $crumb (@extra_breadcrumbs, [ $home_link_str => $home_link ]) {
+               print $cgi->a({-href => esc_url($crumb->[1])}, $crumb->[0]) . " / ";
+       }
+       if (defined $project) {
+               my @dirname = split '/', $project;
+               my $projectbasename = pop @dirname;
+               print_nav_breadcrumbs_path(@dirname);
+               print $cgi->a({-href => href(action=>"summary")}, esc_html($projectbasename));
+               if (defined $action) {
+                       my $action_print = $action ;
+                       if (defined $opts{-action_extra}) {
+                               $action_print = $cgi->a({-href => href(action=>$action)},
+                                       $action);
+                       }
+                       print " / $action_print";
+               }
+               if (defined $opts{-action_extra}) {
+                       print " / $opts{-action_extra}";
+               }
+               print "\n";
+       } elsif (defined $project_filter) {
+               print_nav_breadcrumbs_path(split '/', $project_filter);
+       }
+}
+
+sub print_search_form {
+       if (!defined $searchtext) {
+               $searchtext = "";
+       }
+       my $search_hash;
+       if (defined $hash_base) {
+               $search_hash = $hash_base;
+       } elsif (defined $hash) {
+               $search_hash = $hash;
+       } else {
+               $search_hash = "HEAD";
+       }
+       my $action = $my_uri;
+       my $use_pathinfo = gitweb_check_feature('pathinfo');
+       if ($use_pathinfo) {
+               $action .= "/".esc_url($project);
+       }
+       print $cgi->start_form(-method => "get", -action => $action) .
+             "<div class=\"search\">\n" .
+             (!$use_pathinfo &&
+             $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
+             $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
+             $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
+             $cgi->popup_menu(-name => 'st', -default => 'commit',
+                              -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
+             " " . $cgi->a({-href => href(action=>"search_help"),
+                            -title => "search help" }, "?") . " search:\n",
+             $cgi->textfield(-name => "s", -value => $searchtext, -override => 1) . "\n" .
+             "<span title=\"Extended regular expression\">" .
+             $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
+                            -checked => $search_use_regexp) .
+             "</span>" .
+             "</div>" .
+             $cgi->end_form() . "\n";
+}
+
+sub git_header_html {
+       my $status = shift || "200 OK";
+       my $expires = shift;
+       my %opts = @_;
+
+       my $title = get_page_title();
+       print $cgi->header(-type=>get_content_type_html(), -charset => 'utf-8',
+                          -status=> $status, -expires => $expires)
+               unless ($opts{'-no_http_header'});
+       my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
+       print <<EOF;
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html [
+       <!ENTITY nbsp "&#xA0;">
+       <!ENTITY sdot "&#x22C5;">
+]>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
+<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
+<!-- git core binaries version $git_version -->
+<head>
+<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
+<meta name="robots" content="index, nofollow"/>
+<title>$title</title>
+EOF
+       # the stylesheet, favicon etc urls won't work correctly with path_info
+       # unless we set the appropriate base URL
+       if ($ENV{'PATH_INFO'}) {
+               print "<base href=\"".esc_url($base_url)."\" />\n";
+       }
+       print_header_links($status);
+
+       if (defined $site_html_head_string) {
+               print to_utf8($site_html_head_string);
+       }
+
+       print "</head>\n" .
+             "<body>\n";
+
+       if (defined $site_header && -f $site_header) {
+               insert_file($site_header);
+       }
+
+       print "<div class=\"page_header\">\n";
+       if (defined $logo) {
+               print $cgi->a({-href => esc_url($logo_url),
+                              -title => $logo_label},
+                             $cgi->img({-src => esc_url($logo),
+                                        -width => 72, -height => 27,
+                                        -alt => "git",
+                                        -class => "logo"}));
+       }
+       print_nav_breadcrumbs(%opts);
+       print "</div>\n";
+
+       my $have_search = gitweb_check_feature('search');
+       if (defined $project && $have_search) {
+               print_search_form();
+       }
+}
+
+sub git_footer_html {
+       my $feed_class = 'rss_logo';
+
+       print "<div class=\"page_footer\">\n";
+       if (defined $project) {
+               my $descr = git_get_project_description($project);
+               if (defined $descr) {
+                       print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
+               }
+
+               my %href_params = get_feed_info();
+               if (!%href_params) {
+                       $feed_class .= ' generic';
+               }
+               $href_params{'-title'} ||= 'log';
+
+               foreach my $format (qw(RSS Atom)) {
+                       $href_params{'action'} = lc($format);
+                       print $cgi->a({-href => href(%href_params),
+                                     -title => "$href_params{'-title'} $format feed",
+                                     -class => $feed_class}, $format)."\n";
+               }
+
+       } else {
+               print $cgi->a({-href => href(project=>undef, action=>"opml",
+                                            project_filter => $project_filter),
+                             -class => $feed_class}, "OPML") . " ";
+               print $cgi->a({-href => href(project=>undef, action=>"project_index",
+                                            project_filter => $project_filter),
+                             -class => $feed_class}, "TXT") . "\n";
+       }
+       print "</div>\n"; # class="page_footer"
+
+       if (defined $t0 && gitweb_check_feature('timed')) {
+               print "<div id=\"generating_info\">\n";
+               print 'This page took '.
+                     '<span id="generating_time" class="time_span">'.
+                     tv_interval($t0, [ gettimeofday() ]).
+                     ' seconds </span>'.
+                     ' and '.
+                     '<span id="generating_cmd">'.
+                     $number_of_git_cmds.
+                     '</span> git commands '.
+                     " to generate.\n";
+               print "</div>\n"; # class="page_footer"
+       }
+
+       if (defined $site_footer && -f $site_footer) {
+               insert_file($site_footer);
+       }
+
+       print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
+       if (defined $action &&
+           $action eq 'blame_incremental') {
+               print qq!<script type="text/javascript">\n!.
+                     qq!startBlame("!. esc_attr(href(action=>"blame_data", -replay=>1)) .qq!",\n!.
+                     qq!           "!. esc_attr(href()) .qq!");\n!.
+                     qq!</script>\n!;
+       } else {
+               my ($jstimezone, $tz_cookie, $datetime_class) =
+                       gitweb_get_feature('javascript-timezone');
+
+               print qq!<script type="text/javascript">\n!.
+                     qq!window.onload = function () {\n!;
+               if (gitweb_check_feature('javascript-actions')) {
+                       print qq!       fixLinks();\n!;
+               }
+               if ($jstimezone && $tz_cookie && $datetime_class) {
+                       print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
+                             qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
+               }
+               print qq!};\n!.
+                     qq!</script>\n!;
+       }
+
+       print "</body>\n" .
+             "</html>";
+}
+
+# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
+# Example: die_error(404, 'Hash not found')
+# By convention, use the following status codes (as defined in RFC 2616):
+# 400: Invalid or missing CGI parameters, or
+#      requested object exists but has wrong type.
+# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
+#      this server or project.
+# 404: Requested object/revision/project doesn't exist.
+# 500: The server isn't configured properly, or
+#      an internal error occurred (e.g. failed assertions caused by bugs), or
+#      an unknown error occurred (e.g. the git binary died unexpectedly).
+# 503: The server is currently unavailable (because it is overloaded,
+#      or down for maintenance).  Generally, this is a temporary state.
+sub die_error {
+       my $status = shift || 500;
+       my $error = esc_html(shift) || "Internal Server Error";
+       my $extra = shift;
+       my %opts = @_;
+
+       my %http_responses = (
+               400 => '400 Bad Request',
+               403 => '403 Forbidden',
+               404 => '404 Not Found',
+               500 => '500 Internal Server Error',
+               503 => '503 Service Unavailable',
+       );
+       git_header_html($http_responses{$status}, undef, %opts);
+       print <<EOF;
+<div class="page_body">
+<br /><br />
+$status - $error
+<br />
+EOF
+       if (defined $extra) {
+               print "<hr />\n" .
+                     "$extra\n";
+       }
+       print "</div>\n";
+
+       git_footer_html();
+       goto DONE_GITWEB
+               unless ($opts{'-error_handler'});
+}
+
+## ----------------------------------------------------------------------
+## functions printing or outputting HTML: navigation
+
+sub git_print_page_nav {
+       my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
+       $extra = '' if !defined $extra; # pager or formats
+
+       my @navs = qw(summary shortlog log commit commitdiff tree);
+       if ($suppress) {
+               @navs = grep { $_ ne $suppress } @navs;
+       }
+
+       my %arg = map { $_ => {action=>$_} } @navs;
+       if (defined $head) {
+               for (qw(commit commitdiff)) {
+                       $arg{$_}{'hash'} = $head;
+               }
+               if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
+                       for (qw(shortlog log)) {
+                               $arg{$_}{'hash'} = $head;
+                       }
+               }
+       }
+
+       $arg{'tree'}{'hash'} = $treehead if defined $treehead;
+       $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
+
+       my @actions = gitweb_get_feature('actions');
+       my %repl = (
+               '%' => '%',
+               'n' => $project,         # project name
+               'f' => $git_dir,         # project path within filesystem
+               'h' => $treehead || '',  # current hash ('h' parameter)
+               'b' => $treebase || '',  # hash base ('hb' parameter)
+       );
+       while (@actions) {
+               my ($label, $link, $pos) = splice(@actions,0,3);
+               # insert
+               @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
+               # munch munch
+               $link =~ s/%([%nfhb])/$repl{$1}/g;
+               $arg{$label}{'_href'} = $link;
+       }
+
+       print "<div class=\"page_nav\">\n" .
+               (join " | ",
+                map { $_ eq $current ?
+                      $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
+                } @navs);
+       print "<br/>\n$extra<br/>\n" .
+             "</div>\n";
+}
+
+# returns a submenu for the navigation of the refs views (tags, heads,
+# remotes) with the current view disabled and the remotes view only
+# available if the feature is enabled
+sub format_ref_views {
+       my ($current) = @_;
+       my @ref_views = qw{tags heads};
+       push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
+       return join " | ", map {
+               $_ eq $current ? $_ :
+               $cgi->a({-href => href(action=>$_)}, $_)
+       } @ref_views
+}
+
+sub format_paging_nav {
+       my ($action, $page, $has_next_link) = @_;
+       my $paging_nav;
+
+
+       if ($page > 0) {
+               $paging_nav .=
+                       $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
+                       " &sdot; " .
+                       $cgi->a({-href => href(-replay=>1, page=>$page-1),
+                                -accesskey => "p", -title => "Alt-p"}, "prev");
+       } else {
+               $paging_nav .= "first &sdot; prev";
+       }
+
+       if ($has_next_link) {
+               $paging_nav .= " &sdot; " .
+                       $cgi->a({-href => href(-replay=>1, page=>$page+1),
+                                -accesskey => "n", -title => "Alt-n"}, "next");
+       } else {
+               $paging_nav .= " &sdot; next";
+       }
+
+       return $paging_nav;
+}
+
+## ......................................................................
+## functions printing or outputting HTML: div
+
+sub git_print_header_div {
+       my ($action, $title, $hash, $hash_base) = @_;
+       my %args = ();
+
+       $args{'action'} = $action;
+       $args{'hash'} = $hash if $hash;
+       $args{'hash_base'} = $hash_base if $hash_base;
+
+       print "<div class=\"header\">\n" .
+             $cgi->a({-href => href(%args), -class => "title"},
+             $title ? $title : $action) .
+             "\n</div>\n";
+}
+
+sub format_repo_url {
+       my ($name, $url) = @_;
+       return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
+}
+
+# Group output by placing it in a DIV element and adding a header.
+# Options for start_div() can be provided by passing a hash reference as the
+# first parameter to the function.
+# Options to git_print_header_div() can be provided by passing an array
+# reference. This must follow the options to start_div if they are present.
+# The content can be a scalar, which is output as-is, a scalar reference, which
+# is output after html escaping, an IO handle passed either as *handle or
+# *handle{IO}, or a function reference. In the latter case all following
+# parameters will be taken as argument to the content function call.
+sub git_print_section {
+       my ($div_args, $header_args, $content);
+       my $arg = shift;
+       if (ref($arg) eq 'HASH') {
+               $div_args = $arg;
+               $arg = shift;
+       }
+       if (ref($arg) eq 'ARRAY') {
+               $header_args = $arg;
+               $arg = shift;
+       }
+       $content = $arg;
+
+       print $cgi->start_div($div_args);
+       git_print_header_div(@$header_args);
+
+       if (ref($content) eq 'CODE') {
+               $content->(@_);
+       } elsif (ref($content) eq 'SCALAR') {
+               print esc_html($$content);
+       } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
+               print <$content>;
+       } elsif (!ref($content) && defined($content)) {
+               print $content;
+       }
+
+       print $cgi->end_div;
+}
+
+sub format_timestamp_html {
+       my $date = shift;
+       my $strtime = $date->{'rfc2822'};
+
+       my (undef, undef, $datetime_class) =
+               gitweb_get_feature('javascript-timezone');
+       if ($datetime_class) {
+               $strtime = qq!<span class="$datetime_class">$strtime</span>!;
+       }
+
+       my $localtime_format = '(%02d:%02d %s)';
+       if ($date->{'hour_local'} < 6) {
+               $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
+       }
+       $strtime .= ' ' .
+                   sprintf($localtime_format,
+                           $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
+
+       return $strtime;
+}
+
+# Outputs the author name and date in long form
+sub git_print_authorship {
+       my $co = shift;
+       my %opts = @_;
+       my $tag = $opts{-tag} || 'div';
+       my $author = $co->{'author_name'};
+
+       my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
+       print "<$tag class=\"author_date\">" .
+             format_search_author($author, "author", esc_html($author)) .
+             " [".format_timestamp_html(\%ad)."]".
+             git_get_avatar($co->{'author_email'}, -pad_before => 1) .
+             "</$tag>\n";
+}
+
+# Outputs table rows containing the full author or committer information,
+# in the format expected for 'commit' view (& similar).
+# Parameters are a commit hash reference, followed by the list of people
+# to output information for. If the list is empty it defaults to both
+# author and committer.
+sub git_print_authorship_rows {
+       my $co = shift;
+       # too bad we can't use @people = @_ || ('author', 'committer')
+       my @people = @_;
+       @people = ('author', 'committer') unless @people;
+       foreach my $who (@people) {
+               my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
+               print "<tr><td>$who</td><td>" .
+                     format_search_author($co->{"${who}_name"}, $who,
+                                          esc_html($co->{"${who}_name"})) . " " .
+                     format_search_author($co->{"${who}_email"}, $who,
+                                          esc_html("<" . $co->{"${who}_email"} . ">")) .
+                     "</td><td rowspan=\"2\">" .
+                     git_get_avatar($co->{"${who}_email"}, -size => 'double') .
+                     "</td></tr>\n" .
+                     "<tr>" .
+                     "<td></td><td>" .
+                     format_timestamp_html(\%wd) .
+                     "</td>" .
+                     "</tr>\n";
+       }
+}
+
+sub git_print_page_path {
+       my $name = shift;
+       my $type = shift;
+       my $hb = shift;
+
+
+       print "<div class=\"page_path\">";
+       print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
+                     -title => 'tree root'}, to_utf8("[$project]"));
+       print " / ";
+       if (defined $name) {
+               my @dirname = split '/', $name;
+               my $basename = pop @dirname;
+               my $fullname = '';
+
+               foreach my $dir (@dirname) {
+                       $fullname .= ($fullname ? '/' : '') . $dir;
+                       print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
+                                                    hash_base=>$hb),
+                                     -title => $fullname}, esc_path($dir));
+                       print " / ";
+               }
+               if (defined $type && $type eq 'blob') {
+                       print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
+                                                    hash_base=>$hb),
+                                     -title => $name}, esc_path($basename));
+               } elsif (defined $type && $type eq 'tree') {
+                       print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
+                                                    hash_base=>$hb),
+                                     -title => $name}, esc_path($basename));
+                       print " / ";
+               } else {
+                       print esc_path($basename);
+               }
+       }
+       print "<br/></div>\n";
+}
+
+sub git_print_log {
+       my $log = shift;
+       my %opts = @_;
+
+       if ($opts{'-remove_title'}) {
+               # remove title, i.e. first line of log
+               shift @$log;
+       }
+       # remove leading empty lines
+       while (defined $log->[0] && $log->[0] eq "") {
+               shift @$log;
+       }
+
+       # print log
+       my $skip_blank_line = 0;
+       foreach my $line (@$log) {
+               if ($line =~ m/^\s*([A-Z][-A-Za-z]*-([Bb]y|[Tt]o)|C[Cc]|(Clos|Fix)es): /) {
+                       if (! $opts{'-remove_signoff'}) {
+                               print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
+                               $skip_blank_line = 1;
+                       }
+                       next;
+               }
+
+               if ($line =~ m,\s*([a-z]*link): (https?://\S+),i) {
+                       if (! $opts{'-remove_signoff'}) {
+                               print "<span class=\"signoff\">" . esc_html($1) . ": " .
+                                       "<a href=\"" . esc_html($2) . "\">" . esc_html($2) . "</a>" .
+                                       "</span><br/>\n";
+                               $skip_blank_line = 1;
+                       }
+                       next;
+               }
+
+               # print only one empty line
+               # do not print empty line after signoff
+               if ($line eq "") {
+                       next if ($skip_blank_line);
+                       $skip_blank_line = 1;
+               } else {
+                       $skip_blank_line = 0;
+               }
+
+               print format_log_line_html($line) . "<br/>\n";
+       }
+
+       if ($opts{'-final_empty_line'}) {
+               # end with single empty line
+               print "<br/>\n" unless $skip_blank_line;
+       }
+}
+
+# return link target (what link points to)
+sub git_get_link_target {
+       my $hash = shift;
+       my $link_target;
+
+       # read link
+       open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
+               or return;
+       {
+               local $/ = undef;
+               $link_target = <$fd>;
+       }
+       close $fd
+               or return;
+
+       return $link_target;
+}
+
+# given link target, and the directory (basedir) the link is in,
+# return target of link relative to top directory (top tree);
+# return undef if it is not possible (including absolute links).
+sub normalize_link_target {
+       my ($link_target, $basedir) = @_;
+
+       # absolute symlinks (beginning with '/') cannot be normalized
+       return if (substr($link_target, 0, 1) eq '/');
+
+       # normalize link target to path from top (root) tree (dir)
+       my $path;
+       if ($basedir) {
+               $path = $basedir . '/' . $link_target;
+       } else {
+               # we are in top (root) tree (dir)
+               $path = $link_target;
+       }
+
+       # remove //, /./, and /../
+       my @path_parts;
+       foreach my $part (split('/', $path)) {
+               # discard '.' and ''
+               next if (!$part || $part eq '.');
+               # handle '..'
+               if ($part eq '..') {
+                       if (@path_parts) {
+                               pop @path_parts;
+                       } else {
+                               # link leads outside repository (outside top dir)
+                               return;
+                       }
+               } else {
+                       push @path_parts, $part;
+               }
+       }
+       $path = join('/', @path_parts);
+
+       return $path;
+}
+
+# print tree entry (row of git_tree), but without encompassing <tr> element
+sub git_print_tree_entry {
+       my ($t, $basedir, $hash_base, $have_blame) = @_;
+
+       my %base_key = ();
+       $base_key{'hash_base'} = $hash_base if defined $hash_base;
+
+       # The format of a table row is: mode list link.  Where mode is
+       # the mode of the entry, list is the name of the entry, an href,
+       # and link is the action links of the entry.
+
+       print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
+       if (exists $t->{'size'}) {
+               print "<td class=\"size\">$t->{'size'}</td>\n";
+       }
+       if ($t->{'type'} eq "blob") {
+               print "<td class=\"list\">" .
+                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
+                                              file_name=>"$basedir$t->{'name'}", %base_key),
+                               -class => "list"}, esc_path($t->{'name'}));
+               if (S_ISLNK(oct $t->{'mode'})) {
+                       my $link_target = git_get_link_target($t->{'hash'});
+                       if ($link_target) {
+                               my $norm_target = normalize_link_target($link_target, $basedir);
+                               if (defined $norm_target) {
+                                       print " -> " .
+                                             $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
+                                                                    file_name=>$norm_target),
+                                                      -title => $norm_target}, esc_path($link_target));
+                               } else {
+                                       print " -> " . esc_path($link_target);
+                               }
+                       }
+               }
+               print "</td>\n";
+               print "<td class=\"link\">";
+               print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
+                                            file_name=>"$basedir$t->{'name'}", %base_key)},
+                             "blob");
+               if ($have_blame) {
+                       print " | " .
+                             $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
+                                                    file_name=>"$basedir$t->{'name'}", %base_key)},
+                                     "blame");
+               }
+               if (defined $hash_base) {
+                       print " | " .
+                             $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
+                                                    hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
+                                     "history");
+               }
+               print " | " .
+                       $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
+                                              file_name=>"$basedir$t->{'name'}")},
+                               "raw");
+               print "</td>\n";
+
+       } elsif ($t->{'type'} eq "tree") {
+               print "<td class=\"list\">";
+               print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
+                                            file_name=>"$basedir$t->{'name'}",
+                                            %base_key)},
+                             esc_path($t->{'name'}));
+               print "</td>\n";
+               print "<td class=\"link\">";
+               print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
+                                            file_name=>"$basedir$t->{'name'}",
+                                            %base_key)},
+                             "tree");
+               if (defined $hash_base) {
+                       print " | " .
+                             $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
+                                                    file_name=>"$basedir$t->{'name'}")},
+                                     "history");
+               }
+               print "</td>\n";
+       } else {
+               # unknown object: we can only present history for it
+               # (this includes 'commit' object, i.e. submodule support)
+               print "<td class=\"list\">" .
+                     esc_path($t->{'name'}) .
+                     "</td>\n";
+               print "<td class=\"link\">";
+               if (defined $hash_base) {
+                       print $cgi->a({-href => href(action=>"history",
+                                                    hash_base=>$hash_base,
+                                                    file_name=>"$basedir$t->{'name'}")},
+                                     "history");
+               }
+               print "</td>\n";
+       }
+}
+
+## ......................................................................
+## functions printing large fragments of HTML
+
+# get pre-image filenames for merge (combined) diff
+sub fill_from_file_info {
+       my ($diff, @parents) = @_;
+
+       $diff->{'from_file'} = [ ];
+       $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
+       for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
+               if ($diff->{'status'}[$i] eq 'R' ||
+                   $diff->{'status'}[$i] eq 'C') {
+                       $diff->{'from_file'}[$i] =
+                               git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
+               }
+       }
+
+       return $diff;
+}
+
+# is current raw difftree line of file deletion
+sub is_deleted {
+       my $diffinfo = shift;
+
+       return $diffinfo->{'to_id'} eq ('0' x 40) || $diffinfo->{'to_id'} eq ('0' x 64);
+}
+
+# does patch correspond to [previous] difftree raw line
+# $diffinfo  - hashref of parsed raw diff format
+# $patchinfo - hashref of parsed patch diff format
+#              (the same keys as in $diffinfo)
+sub is_patch_split {
+       my ($diffinfo, $patchinfo) = @_;
+
+       return defined $diffinfo && defined $patchinfo
+               && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
+}
+
+
+sub git_difftree_body {
+       my ($difftree, $hash, @parents) = @_;
+       my ($parent) = $parents[0];
+       my $have_blame = gitweb_check_feature('blame');
+       print "<div class=\"list_head\">\n";
+       if ($#{$difftree} > 10) {
+               print(($#{$difftree} + 1) . " files changed:\n");
+       }
+       print "</div>\n";
+
+       print "<table class=\"" .
+             (@parents > 1 ? "combined " : "") .
+             "diff_tree\">\n";
+
+       # header only for combined diff in 'commitdiff' view
+       my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
+       if ($has_header) {
+               # table header
+               print "<thead><tr>\n" .
+                      "<th></th><th></th>\n"; # filename, patchN link
+               for (my $i = 0; $i < @parents; $i++) {
+                       my $par = $parents[$i];
+                       print "<th>" .
+                             $cgi->a({-href => href(action=>"commitdiff",
+                                                    hash=>$hash, hash_parent=>$par),
+                                      -title => 'commitdiff to parent number ' .
+                                                 ($i+1) . ': ' . substr($par,0,7)},
+                                     $i+1) .
+                             "&nbsp;</th>\n";
+               }
+               print "</tr></thead>\n<tbody>\n";
+       }
+
+       my $alternate = 1;
+       my $patchno = 0;
+       foreach my $line (@{$difftree}) {
+               my $diff = parsed_difftree_line($line);
+
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+
+               if (exists $diff->{'nparents'}) { # combined diff
+
+                       fill_from_file_info($diff, @parents)
+                               unless exists $diff->{'from_file'};
+
+                       if (!is_deleted($diff)) {
+                               # file exists in the result (child) commit
+                               print "<td>" .
+                                     $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+                                                            file_name=>$diff->{'to_file'},
+                                                            hash_base=>$hash),
+                                             -class => "list"}, esc_path($diff->{'to_file'})) .
+                                     "</td>\n";
+                       } else {
+                               print "<td>" .
+                                     esc_path($diff->{'to_file'}) .
+                                     "</td>\n";
+                       }
+
+                       if ($action eq 'commitdiff') {
+                               # link to patch
+                               $patchno++;
+                               print "<td class=\"link\">" .
+                                     $cgi->a({-href => href(-anchor=>"patch$patchno")},
+                                             "patch") .
+                                     " | " .
+                                     "</td>\n";
+                       }
+
+                       my $has_history = 0;
+                       my $not_deleted = 0;
+                       for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
+                               my $hash_parent = $parents[$i];
+                               my $from_hash = $diff->{'from_id'}[$i];
+                               my $from_path = $diff->{'from_file'}[$i];
+                               my $status = $diff->{'status'}[$i];
+
+                               $has_history ||= ($status ne 'A');
+                               $not_deleted ||= ($status ne 'D');
+
+                               if ($status eq 'A') {
+                                       print "<td  class=\"link\" align=\"right\"> | </td>\n";
+                               } elsif ($status eq 'D') {
+                                       print "<td class=\"link\">" .
+                                             $cgi->a({-href => href(action=>"blob",
+                                                                    hash_base=>$hash,
+                                                                    hash=>$from_hash,
+                                                                    file_name=>$from_path)},
+                                                     "blob" . ($i+1)) .
+                                             " | </td>\n";
+                               } else {
+                                       if ($diff->{'to_id'} eq $from_hash) {
+                                               print "<td class=\"link nochange\">";
+                                       } else {
+                                               print "<td class=\"link\">";
+                                       }
+                                       print $cgi->a({-href => href(action=>"blobdiff",
+                                                                    hash=>$diff->{'to_id'},
+                                                                    hash_parent=>$from_hash,
+                                                                    hash_base=>$hash,
+                                                                    hash_parent_base=>$hash_parent,
+                                                                    file_name=>$diff->{'to_file'},
+                                                                    file_parent=>$from_path)},
+                                                     "diff" . ($i+1)) .
+                                             " | </td>\n";
+                               }
+                       }
+
+                       print "<td class=\"link\">";
+                       if ($not_deleted) {
+                               print $cgi->a({-href => href(action=>"blob",
+                                                            hash=>$diff->{'to_id'},
+                                                            file_name=>$diff->{'to_file'},
+                                                            hash_base=>$hash)},
+                                             "blob");
+                               print " | " if ($has_history);
+                       }
+                       if ($has_history) {
+                               print $cgi->a({-href => href(action=>"history",
+                                                            file_name=>$diff->{'to_file'},
+                                                            hash_base=>$hash)},
+                                             "history");
+                       }
+                       print "</td>\n";
+
+                       print "</tr>\n";
+                       next; # instead of 'else' clause, to avoid extra indent
+               }
+               # else ordinary diff
+
+               my ($to_mode_oct, $to_mode_str, $to_file_type);
+               my ($from_mode_oct, $from_mode_str, $from_file_type);
+               if ($diff->{'to_mode'} ne ('0' x 6)) {
+                       $to_mode_oct = oct $diff->{'to_mode'};
+                       if (S_ISREG($to_mode_oct)) { # only for regular file
+                               $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
+                       }
+                       $to_file_type = file_type($diff->{'to_mode'});
+               }
+               if ($diff->{'from_mode'} ne ('0' x 6)) {
+                       $from_mode_oct = oct $diff->{'from_mode'};
+                       if (S_ISREG($from_mode_oct)) { # only for regular file
+                               $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
+                       }
+                       $from_file_type = file_type($diff->{'from_mode'});
+               }
+
+               if ($diff->{'status'} eq "A") { # created
+                       my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
+                       $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
+                       $mode_chng   .= "]</span>";
+                       print "<td>";
+                       print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+                                                    hash_base=>$hash, file_name=>$diff->{'file'}),
+                                     -class => "list"}, esc_path($diff->{'file'}));
+                       print "</td>\n";
+                       print "<td>$mode_chng</td>\n";
+                       print "<td class=\"link\">";
+                       if ($action eq 'commitdiff') {
+                               # link to patch
+                               $patchno++;
+                               print $cgi->a({-href => href(-anchor=>"patch$patchno")},
+                                             "patch") .
+                                     " | ";
+                       }
+                       print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+                                                    hash_base=>$hash, file_name=>$diff->{'file'})},
+                                     "blob");
+                       print "</td>\n";
+
+               } elsif ($diff->{'status'} eq "D") { # deleted
+                       my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
+                       print "<td>";
+                       print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
+                                                    hash_base=>$parent, file_name=>$diff->{'file'}),
+                                      -class => "list"}, esc_path($diff->{'file'}));
+                       print "</td>\n";
+                       print "<td>$mode_chng</td>\n";
+                       print "<td class=\"link\">";
+                       if ($action eq 'commitdiff') {
+                               # link to patch
+                               $patchno++;
+                               print $cgi->a({-href => href(-anchor=>"patch$patchno")},
+                                             "patch") .
+                                     " | ";
+                       }
+                       print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
+                                                    hash_base=>$parent, file_name=>$diff->{'file'})},
+                                     "blob") . " | ";
+                       if ($have_blame) {
+                               print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
+                                                            file_name=>$diff->{'file'})},
+                                             "blame") . " | ";
+                       }
+                       print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
+                                                    file_name=>$diff->{'file'})},
+                                     "history");
+                       print "</td>\n";
+
+               } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
+                       my $mode_chnge = "";
+                       if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
+                               $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
+                               if ($from_file_type ne $to_file_type) {
+                                       $mode_chnge .= " from $from_file_type to $to_file_type";
+                               }
+                               if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
+                                       if ($from_mode_str && $to_mode_str) {
+                                               $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
+                                       } elsif ($to_mode_str) {
+                                               $mode_chnge .= " mode: $to_mode_str";
+                                       }
+                               }
+                               $mode_chnge .= "]</span>\n";
+                       }
+                       print "<td>";
+                       print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+                                                    hash_base=>$hash, file_name=>$diff->{'file'}),
+                                     -class => "list"}, esc_path($diff->{'file'}));
+                       print "</td>\n";
+                       print "<td>$mode_chnge</td>\n";
+                       print "<td class=\"link\">";
+                       if ($action eq 'commitdiff') {
+                               # link to patch
+                               $patchno++;
+                               print $cgi->a({-href => href(-anchor=>"patch$patchno")},
+                                             "patch") .
+                                     " | ";
+                       } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
+                               # "commit" view and modified file (not onlu mode changed)
+                               print $cgi->a({-href => href(action=>"blobdiff",
+                                                            hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
+                                                            hash_base=>$hash, hash_parent_base=>$parent,
+                                                            file_name=>$diff->{'file'})},
+                                             "diff") .
+                                     " | ";
+                       }
+                       print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+                                                    hash_base=>$hash, file_name=>$diff->{'file'})},
+                                      "blob") . " | ";
+                       if ($have_blame) {
+                               print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
+                                                            file_name=>$diff->{'file'})},
+                                             "blame") . " | ";
+                       }
+                       print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
+                                                    file_name=>$diff->{'file'})},
+                                     "history");
+                       print "</td>\n";
+
+               } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
+                       my %status_name = ('R' => 'moved', 'C' => 'copied');
+                       my $nstatus = $status_name{$diff->{'status'}};
+                       my $mode_chng = "";
+                       if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
+                               # mode also for directories, so we cannot use $to_mode_str
+                               $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
+                       }
+                       print "<td>" .
+                             $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
+                                                    hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
+                                     -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
+                             "<td><span class=\"file_status $nstatus\">[$nstatus from " .
+                             $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
+                                                    hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
+                                     -class => "list"}, esc_path($diff->{'from_file'})) .
+                             " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
+                             "<td class=\"link\">";
+                       if ($action eq 'commitdiff') {
+                               # link to patch
+                               $patchno++;
+                               print $cgi->a({-href => href(-anchor=>"patch$patchno")},
+                                             "patch") .
+                                     " | ";
+                       } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
+                               # "commit" view and modified file (not only pure rename or copy)
+                               print $cgi->a({-href => href(action=>"blobdiff",
+                                                            hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
+                                                            hash_base=>$hash, hash_parent_base=>$parent,
+                                                            file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
+                                             "diff") .
+                                     " | ";
+                       }
+                       print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+                                                    hash_base=>$parent, file_name=>$diff->{'to_file'})},
+                                     "blob") . " | ";
+                       if ($have_blame) {
+                               print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
+                                                            file_name=>$diff->{'to_file'})},
+                                             "blame") . " | ";
+                       }
+                       print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
+                                                   file_name=>$diff->{'to_file'})},
+                                     "history");
+                       print "</td>\n";
+
+               } # we should not encounter Unmerged (U) or Unknown (X) status
+               print "</tr>\n";
+       }
+       print "</tbody>" if $has_header;
+       print "</table>\n";
+}
+
+# Print context lines and then rem/add lines in a side-by-side manner.
+sub print_sidebyside_diff_lines {
+       my ($ctx, $rem, $add) = @_;
+
+       # print context block before add/rem block
+       if (@$ctx) {
+               print join '',
+                       '<div class="chunk_block ctx">',
+                               '<div class="old">',
+                               @$ctx,
+                               '</div>',
+                               '<div class="new">',
+                               @$ctx,
+                               '</div>',
+                       '</div>';
+       }
+
+       if (!@$add) {
+               # pure removal
+               print join '',
+                       '<div class="chunk_block rem">',
+                               '<div class="old">',
+                               @$rem,
+                               '</div>',
+                       '</div>';
+       } elsif (!@$rem) {
+               # pure addition
+               print join '',
+                       '<div class="chunk_block add">',
+                               '<div class="new">',
+                               @$add,
+                               '</div>',
+                       '</div>';
+       } else {
+               print join '',
+                       '<div class="chunk_block chg">',
+                               '<div class="old">',
+                               @$rem,
+                               '</div>',
+                               '<div class="new">',
+                               @$add,
+                               '</div>',
+                       '</div>';
+       }
+}
+
+# Print context lines and then rem/add lines in inline manner.
+sub print_inline_diff_lines {
+       my ($ctx, $rem, $add) = @_;
+
+       print @$ctx, @$rem, @$add;
+}
+
+# Format removed and added line, mark changed part and HTML-format them.
+# Implementation is based on contrib/diff-highlight
+sub format_rem_add_lines_pair {
+       my ($rem, $add, $num_parents) = @_;
+
+       # We need to untabify lines before split()'ing them;
+       # otherwise offsets would be invalid.
+       chomp $rem;
+       chomp $add;
+       $rem = untabify($rem);
+       $add = untabify($add);
+
+       my @rem = split(//, $rem);
+       my @add = split(//, $add);
+       my ($esc_rem, $esc_add);
+       # Ignore leading +/- characters for each parent.
+       my ($prefix_len, $suffix_len) = ($num_parents, 0);
+       my ($prefix_has_nonspace, $suffix_has_nonspace);
+
+       my $shorter = (@rem < @add) ? @rem : @add;
+       while ($prefix_len < $shorter) {
+               last if ($rem[$prefix_len] ne $add[$prefix_len]);
+
+               $prefix_has_nonspace = 1 if ($rem[$prefix_len] !~ /\s/);
+               $prefix_len++;
+       }
+
+       while ($prefix_len + $suffix_len < $shorter) {
+               last if ($rem[-1 - $suffix_len] ne $add[-1 - $suffix_len]);
+
+               $suffix_has_nonspace = 1 if ($rem[-1 - $suffix_len] !~ /\s/);
+               $suffix_len++;
+       }
+
+       # Mark lines that are different from each other, but have some common
+       # part that isn't whitespace.  If lines are completely different, don't
+       # mark them because that would make output unreadable, especially if
+       # diff consists of multiple lines.
+       if ($prefix_has_nonspace || $suffix_has_nonspace) {
+               $esc_rem = esc_html_hl_regions($rem, 'marked',
+                       [$prefix_len, @rem - $suffix_len], -nbsp=>1);
+               $esc_add = esc_html_hl_regions($add, 'marked',
+                       [$prefix_len, @add - $suffix_len], -nbsp=>1);
+       } else {
+               $esc_rem = esc_html($rem, -nbsp=>1);
+               $esc_add = esc_html($add, -nbsp=>1);
+       }
+
+       return format_diff_line(\$esc_rem, 'rem'),
+              format_diff_line(\$esc_add, 'add');
+}
+
+# HTML-format diff context, removed and added lines.
+sub format_ctx_rem_add_lines {
+       my ($ctx, $rem, $add, $num_parents) = @_;
+       my (@new_ctx, @new_rem, @new_add);
+       my $can_highlight = 0;
+       my $is_combined = ($num_parents > 1);
+
+       # Highlight if every removed line has a corresponding added line.
+       if (@$add > 0 && @$add == @$rem) {
+               $can_highlight = 1;
+
+               # Highlight lines in combined diff only if the chunk contains
+               # diff between the same version, e.g.
+               #
+               #    - a
+               #   -  b
+               #    + c
+               #   +  d
+               #
+               # Otherwise the highlighting would be confusing.
+               if ($is_combined) {
+                       for (my $i = 0; $i < @$add; $i++) {
+                               my $prefix_rem = substr($rem->[$i], 0, $num_parents);
+                               my $prefix_add = substr($add->[$i], 0, $num_parents);
+
+                               $prefix_rem =~ s/-/+/g;
+
+                               if ($prefix_rem ne $prefix_add) {
+                                       $can_highlight = 0;
+                                       last;
+                               }
+                       }
+               }
+       }
+
+       if ($can_highlight) {
+               for (my $i = 0; $i < @$add; $i++) {
+                       my ($line_rem, $line_add) = format_rem_add_lines_pair(
+                               $rem->[$i], $add->[$i], $num_parents);
+                       push @new_rem, $line_rem;
+                       push @new_add, $line_add;
+               }
+       } else {
+               @new_rem = map { format_diff_line($_, 'rem') } @$rem;
+               @new_add = map { format_diff_line($_, 'add') } @$add;
+       }
+
+       @new_ctx = map { format_diff_line($_, 'ctx') } @$ctx;
+
+       return (\@new_ctx, \@new_rem, \@new_add);
+}
+
+# Print context lines and then rem/add lines.
+sub print_diff_lines {
+       my ($ctx, $rem, $add, $diff_style, $num_parents) = @_;
+       my $is_combined = $num_parents > 1;
+
+       ($ctx, $rem, $add) = format_ctx_rem_add_lines($ctx, $rem, $add,
+               $num_parents);
+
+       if ($diff_style eq 'sidebyside' && !$is_combined) {
+               print_sidebyside_diff_lines($ctx, $rem, $add);
+       } else {
+               # default 'inline' style and unknown styles
+               print_inline_diff_lines($ctx, $rem, $add);
+       }
+}
+
+sub print_diff_chunk {
+       my ($diff_style, $num_parents, $from, $to, @chunk) = @_;
+       my (@ctx, @rem, @add);
+
+       # The class of the previous line.
+       my $prev_class = '';
+
+       return unless @chunk;
+
+       # incomplete last line might be among removed or added lines,
+       # or both, or among context lines: find which
+       for (my $i = 1; $i < @chunk; $i++) {
+               if ($chunk[$i][0] eq 'incomplete') {
+                       $chunk[$i][0] = $chunk[$i-1][0];
+               }
+       }
+
+       # guardian
+       push @chunk, ["", ""];
+
+       foreach my $line_info (@chunk) {
+               my ($class, $line) = @$line_info;
+
+               # print chunk headers
+               if ($class && $class eq 'chunk_header') {
+                       print format_diff_line($line, $class, $from, $to);
+                       next;
+               }
+
+               ## print from accumulator when have some add/rem lines or end
+               # of chunk (flush context lines), or when have add and rem
+               # lines and new block is reached (otherwise add/rem lines could
+               # be reordered)
+               if (!$class || ((@rem || @add) && $class eq 'ctx') ||
+                   (@rem && @add && $class ne $prev_class)) {
+                       print_diff_lines(\@ctx, \@rem, \@add,
+                                        $diff_style, $num_parents);
+                       @ctx = @rem = @add = ();
+               }
+
+               ## adding lines to accumulator
+               # guardian value
+               last unless $line;
+               # rem, add or change
+               if ($class eq 'rem') {
+                       push @rem, $line;
+               } elsif ($class eq 'add') {
+                       push @add, $line;
+               }
+               # context line
+               if ($class eq 'ctx') {
+                       push @ctx, $line;
+               }
+
+               $prev_class = $class;
+       }
+}
+
+sub git_patchset_body {
+       my ($fd, $diff_style, $difftree, $hash, @hash_parents) = @_;
+       my ($hash_parent) = $hash_parents[0];
+
+       my $is_combined = (@hash_parents > 1);
+       my $patch_idx = 0;
+       my $patch_number = 0;
+       my $patch_line;
+       my $diffinfo;
+       my $to_name;
+       my (%from, %to);
+       my @chunk; # for side-by-side diff
+
+       print "<div class=\"patchset\">\n";
+
+       # skip to first patch
+       while ($patch_line = <$fd>) {
+               chomp $patch_line;
+
+               last if ($patch_line =~ m/^diff /);
+       }
+
+ PATCH:
+       while ($patch_line) {
+
+               # parse "git diff" header line
+               if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
+                       # $1 is from_name, which we do not use
+                       $to_name = unquote($2);
+                       $to_name =~ s!^b/!!;
+               } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
+                       # $1 is 'cc' or 'combined', which we do not use
+                       $to_name = unquote($2);
+               } else {
+                       $to_name = undef;
+               }
+
+               # check if current patch belong to current raw line
+               # and parse raw git-diff line if needed
+               if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
+                       # this is continuation of a split patch
+                       print "<div class=\"patch cont\">\n";
+               } else {
+                       # advance raw git-diff output if needed
+                       $patch_idx++ if defined $diffinfo;
+
+                       # read and prepare patch information
+                       $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
+
+                       # compact combined diff output can have some patches skipped
+                       # find which patch (using pathname of result) we are at now;
+                       if ($is_combined) {
+                               while ($to_name ne $diffinfo->{'to_file'}) {
+                                       print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
+                                             format_diff_cc_simplified($diffinfo, @hash_parents) .
+                                             "</div>\n";  # class="patch"
+
+                                       $patch_idx++;
+                                       $patch_number++;
+
+                                       last if $patch_idx > $#$difftree;
+                                       $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
+                               }
+                       }
+
+                       # modifies %from, %to hashes
+                       parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
+
+                       # this is first patch for raw difftree line with $patch_idx index
+                       # we index @$difftree array from 0, but number patches from 1
+                       print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
+               }
+
+               # git diff header
+               #assert($patch_line =~ m/^diff /) if DEBUG;
+               #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
+               $patch_number++;
+               # print "git diff" header
+               print format_git_diff_header_line($patch_line, $diffinfo,
+                                                 \%from, \%to);
+
+               # print extended diff header
+               print "<div class=\"diff extended_header\">\n";
+       EXTENDED_HEADER:
+               while ($patch_line = <$fd>) {
+                       chomp $patch_line;
+
+                       last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
+
+                       print format_extended_diff_header_line($patch_line, $diffinfo,
+                                                              \%from, \%to);
+               }
+               print "</div>\n"; # class="diff extended_header"
+
+               # from-file/to-file diff header
+               if (! $patch_line) {
+                       print "</div>\n"; # class="patch"
+                       last PATCH;
+               }
+               next PATCH if ($patch_line =~ m/^diff /);
+               #assert($patch_line =~ m/^---/) if DEBUG;
+
+               my $last_patch_line = $patch_line;
+               $patch_line = <$fd>;
+               chomp $patch_line;
+               #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
+
+               print format_diff_from_to_header($last_patch_line, $patch_line,
+                                                $diffinfo, \%from, \%to,
+                                                @hash_parents);
+
+               # the patch itself
+       LINE:
+               while ($patch_line = <$fd>) {
+                       chomp $patch_line;
+
+                       next PATCH if ($patch_line =~ m/^diff /);
+
+                       my $class = diff_line_class($patch_line, \%from, \%to);
+
+                       if ($class eq 'chunk_header') {
+                               print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
+                               @chunk = ();
+                       }
+
+                       push @chunk, [ $class, $patch_line ];
+               }
+
+       } continue {
+               if (@chunk) {
+                       print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
+                       @chunk = ();
+               }
+               print "</div>\n"; # class="patch"
+       }
+
+       # for compact combined (--cc) format, with chunk and patch simplification
+       # the patchset might be empty, but there might be unprocessed raw lines
+       for (++$patch_idx if $patch_number > 0;
+            $patch_idx < @$difftree;
+            ++$patch_idx) {
+               # read and prepare patch information
+               $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
+
+               # generate anchor for "patch" links in difftree / whatchanged part
+               print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
+                     format_diff_cc_simplified($diffinfo, @hash_parents) .
+                     "</div>\n";  # class="patch"
+
+               $patch_number++;
+       }
+
+       if ($patch_number == 0) {
+               if (@hash_parents > 1) {
+                       print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
+               } else {
+                       print "<div class=\"diff nodifferences\">No differences found</div>\n";
+               }
+       }
+
+       print "</div>\n"; # class="patchset"
+}
+
+# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+
+sub git_project_search_form {
+       my ($searchtext, $search_use_regexp) = @_;
+
+       my $limit = '';
+       if ($project_filter) {
+               $limit = " in '$project_filter/'";
+       }
+
+       print "<div class=\"projsearch\">\n";
+       print $cgi->start_form(-method => 'get', -action => $my_uri) .
+             $cgi->hidden(-name => 'a', -value => 'project_list')  . "\n";
+       print $cgi->hidden(-name => 'pf', -value => $project_filter). "\n"
+               if (defined $project_filter);
+       print $cgi->textfield(-name => 's', -value => $searchtext,
+                             -title => "Search project by name and description$limit",
+                             -size => 60) . "\n" .
+             "<span title=\"Extended regular expression\">" .
+             $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
+                            -checked => $search_use_regexp) .
+             "</span>\n" .
+             $cgi->submit(-name => 'btnS', -value => 'Search') .
+             $cgi->end_form() . "\n" .
+             $cgi->a({-href => href(project => undef, searchtext => undef,
+                                    project_filter => $project_filter)},
+                     esc_html("List all projects$limit")) . "<br />\n";
+       print "</div>\n";
+}
+
+# entry for given @keys needs filling if at least one of keys in list
+# is not present in %$project_info
+sub project_info_needs_filling {
+       my ($project_info, @keys) = @_;
+
+       # return List::MoreUtils::any { !exists $project_info->{$_} } @keys;
+       foreach my $key (@keys) {
+               if (!exists $project_info->{$key}) {
+                       return 1;
+               }
+       }
+       return;
+}
+
+# fills project list info (age, description, owner, category, forks, etc.)
+# for each project in the list, removing invalid projects from
+# returned list, or fill only specified info.
+#
+# Invalid projects are removed from the returned list if and only if you
+# ask 'age' or 'age_string' to be filled, because they are the only fields
+# that run unconditionally git command that requires repository, and
+# therefore do always check if project repository is invalid.
+#
+# USAGE:
+# * fill_project_list_info(\@project_list, 'descr_long', 'ctags')
+#   ensures that 'descr_long' and 'ctags' fields are filled
+# * @project_list = fill_project_list_info(\@project_list)
+#   ensures that all fields are filled (and invalid projects removed)
+#
+# NOTE: modifies $projlist, but does not remove entries from it
+sub fill_project_list_info {
+       my ($projlist, @wanted_keys) = @_;
+       my @projects;
+       my $filter_set = sub { return @_; };
+       if (@wanted_keys) {
+               my %wanted_keys = map { $_ => 1 } @wanted_keys;
+               $filter_set = sub { return grep { $wanted_keys{$_} } @_; };
+       }
+
+       my $show_ctags = gitweb_check_feature('ctags');
+ PROJECT:
+       foreach my $pr (@$projlist) {
+               if (project_info_needs_filling($pr, $filter_set->('age', 'age_string'))) {
+                       my (@activity) = git_get_last_activity($pr->{'path'});
+                       unless (@activity) {
+                               next PROJECT;
+                       }
+                       ($pr->{'age'}, $pr->{'age_string'}) = @activity;
+               }
+               if (project_info_needs_filling($pr, $filter_set->('descr', 'descr_long'))) {
+                       my $descr = git_get_project_description($pr->{'path'}) || "";
+                       $descr = to_utf8($descr);
+                       $pr->{'descr_long'} = $descr;
+                       $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
+               }
+               if (project_info_needs_filling($pr, $filter_set->('owner'))) {
+                       $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
+               }
+               if ($show_ctags &&
+                   project_info_needs_filling($pr, $filter_set->('ctags'))) {
+                       $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
+               }
+               if ($projects_list_group_categories &&
+                   project_info_needs_filling($pr, $filter_set->('category'))) {
+                       my $cat = git_get_project_category($pr->{'path'}) ||
+                                                          $project_list_default_category;
+                       $pr->{'category'} = to_utf8($cat);
+               }
+
+               push @projects, $pr;
+       }
+
+       return @projects;
+}
+
+sub sort_projects_list {
+       my ($projlist, $order) = @_;
+
+       sub order_str {
+               my $key = shift;
+               return sub { $a->{$key} cmp $b->{$key} };
+       }
+
+       sub order_num_then_undef {
+               my $key = shift;
+               return sub {
+                       defined $a->{$key} ?
+                               (defined $b->{$key} ? $a->{$key} <=> $b->{$key} : -1) :
+                               (defined $b->{$key} ? 1 : 0)
+               };
+       }
+
+       my %orderings = (
+               project => order_str('path'),
+               descr => order_str('descr_long'),
+               owner => order_str('owner'),
+               age => order_num_then_undef('age'),
+       );
+
+       my $ordering = $orderings{$order};
+       return defined $ordering ? sort $ordering @$projlist : @$projlist;
+}
+
+# returns a hash of categories, containing the list of project
+# belonging to each category
+sub build_projlist_by_category {
+       my ($projlist, $from, $to) = @_;
+       my %categories;
+
+       $from = 0 unless defined $from;
+       $to = $#$projlist if (!defined $to || $#$projlist < $to);
+
+       for (my $i = $from; $i <= $to; $i++) {
+               my $pr = $projlist->[$i];
+               push @{$categories{ $pr->{'category'} }}, $pr;
+       }
+
+       return wantarray ? %categories : \%categories;
+}
+
+# print 'sort by' <th> element, generating 'sort by $name' replay link
+# if that order is not selected
+sub print_sort_th {
+       print format_sort_th(@_);
+}
+
+sub format_sort_th {
+       my ($name, $order, $header) = @_;
+       my $sort_th = "";
+       $header ||= ucfirst($name);
+
+       if ($order eq $name) {
+               $sort_th .= "<th>$header</th>\n";
+       } else {
+               $sort_th .= "<th>" .
+                           $cgi->a({-href => href(-replay=>1, order=>$name),
+                                    -class => "header"}, $header) .
+                           "</th>\n";
+       }
+
+       return $sort_th;
+}
+
+sub git_project_list_rows {
+       my ($projlist, $from, $to, $check_forks) = @_;
+
+       $from = 0 unless defined $from;
+       $to = $#$projlist if (!defined $to || $#$projlist < $to);
+
+       my $alternate = 1;
+       for (my $i = $from; $i <= $to; $i++) {
+               my $pr = $projlist->[$i];
+
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+
+               if ($check_forks) {
+                       print "<td>";
+                       if ($pr->{'forks'}) {
+                               my $nforks = scalar @{$pr->{'forks'}};
+                               if ($nforks > 0) {
+                                       print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
+                                                      -title => "$nforks forks"}, "+");
+                               } else {
+                                       print $cgi->span({-title => "$nforks forks"}, "+");
+                               }
+                       }
+                       print "</td>\n";
+               }
+               print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
+                                       -class => "list"},
+                                      esc_html_match_hl($pr->{'path'}, $search_regexp)) .
+                     "</td>\n" .
+                     "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
+                                       -class => "list",
+                                       -title => $pr->{'descr_long'}},
+                                       $search_regexp
+                                       ? esc_html_match_hl_chopped($pr->{'descr_long'},
+                                                                   $pr->{'descr'}, $search_regexp)
+                                       : esc_html($pr->{'descr'})) .
+                     "</td>\n";
+               unless ($omit_owner) {
+                       print "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
+               }
+               unless ($omit_age_column) {
+                       print "<td class=\"". age_class($pr->{'age'}) . "\">" .
+                           (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n";
+               }
+               print"<td class=\"link\">" .
+                     $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
+                     $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
+                     $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
+                     $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
+                     ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
+                     "</td>\n" .
+                     "</tr>\n";
+       }
+}
+
+sub git_project_list_body {
+       # actually uses global variable $project
+       my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
+       my @projects = @$projlist;
+
+       my $check_forks = gitweb_check_feature('forks');
+       my $show_ctags  = gitweb_check_feature('ctags');
+       my $tagfilter = $show_ctags ? $input_params{'ctag'} : undef;
+       $check_forks = undef
+               if ($tagfilter || $search_regexp);
+
+       # filtering out forks before filling info allows to do less work
+       @projects = filter_forks_from_projects_list(\@projects)
+               if ($check_forks);
+       # search_projects_list pre-fills required info
+       @projects = search_projects_list(\@projects,
+                                        'search_regexp' => $search_regexp,
+                                        'tagfilter'  => $tagfilter)
+               if ($tagfilter || $search_regexp);
+       # fill the rest
+       my @all_fields = ('descr', 'descr_long', 'ctags', 'category');
+       push @all_fields, ('age', 'age_string') unless($omit_age_column);
+       push @all_fields, 'owner' unless($omit_owner);
+       @projects = fill_project_list_info(\@projects, @all_fields);
+
+       $order ||= $default_projects_order;
+       $from = 0 unless defined $from;
+       $to = $#projects if (!defined $to || $#projects < $to);
+
+       # short circuit
+       if ($from > $to) {
+               print "<center>\n".
+                     "<b>No such projects found</b><br />\n".
+                     "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
+                     "</center>\n<br />\n";
+               return;
+       }
+
+       @projects = sort_projects_list(\@projects, $order);
+
+       if ($show_ctags) {
+               my $ctags = git_gather_all_ctags(\@projects);
+               my $cloud = git_populate_project_tagcloud($ctags);
+               print git_show_project_tagcloud($cloud, 64);
+       }
+
+       print "<table class=\"project_list\">\n";
+       unless ($no_header) {
+               print "<tr>\n";
+               if ($check_forks) {
+                       print "<th></th>\n";
+               }
+               print_sort_th('project', $order, 'Project');
+               print_sort_th('descr', $order, 'Description');
+               print_sort_th('owner', $order, 'Owner') unless $omit_owner;
+               print_sort_th('age', $order, 'Last Change') unless $omit_age_column;
+               print "<th></th>\n" . # for links
+                     "</tr>\n";
+       }
+
+       if ($projects_list_group_categories) {
+               # only display categories with projects in the $from-$to window
+               @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
+               my %categories = build_projlist_by_category(\@projects, $from, $to);
+               foreach my $cat (sort keys %categories) {
+                       unless ($cat eq "") {
+                               print "<tr>\n";
+                               if ($check_forks) {
+                                       print "<td></td>\n";
+                               }
+                               print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
+                               print "</tr>\n";
+                       }
+
+                       git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
+               }
+       } else {
+               git_project_list_rows(\@projects, $from, $to, $check_forks);
+       }
+
+       if (defined $extra) {
+               print "<tr>\n";
+               if ($check_forks) {
+                       print "<td></td>\n";
+               }
+               print "<td colspan=\"5\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+sub git_log_body {
+       # uses global variable $project
+       my ($commitlist, $from, $to, $refs, $extra) = @_;
+
+       $from = 0 unless defined $from;
+       $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
+
+       for (my $i = 0; $i <= $to; $i++) {
+               my %co = %{$commitlist->[$i]};
+               next if !%co;
+               my $commit = $co{'id'};
+               my $ref = format_ref_marker($refs, $commit);
+               git_print_header_div('commit',
+                              "<span class=\"age\">$co{'age_string'}</span>" .
+                              esc_html($co{'title'}) . $ref,
+                              $commit);
+               print "<div class=\"title_text\">\n" .
+                     "<div class=\"log_link\">\n" .
+                     $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
+                     " | " .
+                     $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
+                     " | " .
+                     $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
+                     "<br/>\n" .
+                     "</div>\n";
+                     git_print_authorship(\%co, -tag => 'span');
+                     print "<br/>\n</div>\n";
+
+               print "<div class=\"log_body\">\n";
+               git_print_log($co{'comment'}, -final_empty_line=> 1);
+               print "</div>\n";
+       }
+       if ($extra) {
+               print "<div class=\"page_nav\">\n";
+               print "$extra\n";
+               print "</div>\n";
+       }
+}
+
+sub git_shortlog_body {
+       # uses global variable $project
+       my ($commitlist, $from, $to, $refs, $extra) = @_;
+
+       $from = 0 unless defined $from;
+       $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
+
+       print "<table class=\"shortlog\">\n";
+       my $alternate = 1;
+       for (my $i = $from; $i <= $to; $i++) {
+               my %co = %{$commitlist->[$i]};
+               my $commit = $co{'id'};
+               my $ref = format_ref_marker($refs, $commit);
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
+               print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+                     format_author_html('td', \%co, 10) . "<td>";
+               print format_subject_html($co{'title'}, $co{'title_short'},
+                                         href(action=>"commit", hash=>$commit), $ref);
+               print "</td>\n" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
+                     $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
+                     $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
+               my $snapshot_links = format_snapshot_links($commit);
+               if (defined $snapshot_links) {
+                       print " | " . $snapshot_links;
+               }
+               print "</td>\n" .
+                     "</tr>\n";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"4\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+sub git_history_body {
+       # Warning: assumes constant type (blob or tree) during history
+       my ($commitlist, $from, $to, $refs, $extra,
+           $file_name, $file_hash, $ftype) = @_;
+
+       $from = 0 unless defined $from;
+       $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
+
+       print "<table class=\"history\">\n";
+       my $alternate = 1;
+       for (my $i = $from; $i <= $to; $i++) {
+               my %co = %{$commitlist->[$i]};
+               if (!%co) {
+                       next;
+               }
+               my $commit = $co{'id'};
+
+               my $ref = format_ref_marker($refs, $commit);
+
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+       # shortlog:   format_author_html('td', \%co, 10)
+                     format_author_html('td', \%co, 15, 3) . "<td>";
+               # originally git_history used chop_str($co{'title'}, 50)
+               print format_subject_html($co{'title'}, $co{'title_short'},
+                                         href(action=>"commit", hash=>$commit), $ref);
+               print "</td>\n" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
+                     $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
+
+               if ($ftype eq 'blob') {
+                       print " | " .
+                             $cgi->a({-href => href(action=>"blob_plain", hash_base=>$commit, file_name=>$file_name)}, "raw");
+
+                       my $blob_current = $file_hash;
+                       my $blob_parent  = git_get_hash_by_path($commit, $file_name);
+                       if (defined $blob_current && defined $blob_parent &&
+                                       $blob_current ne $blob_parent) {
+                               print " | " .
+                                       $cgi->a({-href => href(action=>"blobdiff",
+                                                              hash=>$blob_current, hash_parent=>$blob_parent,
+                                                              hash_base=>$hash_base, hash_parent_base=>$commit,
+                                                              file_name=>$file_name)},
+                                               "diff to current");
+                       }
+               }
+               print "</td>\n" .
+                     "</tr>\n";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"4\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+sub git_tags_body {
+       # uses global variable $project
+       my ($taglist, $from, $to, $extra) = @_;
+       $from = 0 unless defined $from;
+       $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
+
+       print "<table class=\"tags\">\n";
+       my $alternate = 1;
+       for (my $i = $from; $i <= $to; $i++) {
+               my $entry = $taglist->[$i];
+               my %tag = %$entry;
+               my $comment = $tag{'subject'};
+               my $comment_short;
+               if (defined $comment) {
+                       $comment_short = chop_str($comment, 30, 5);
+               }
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               if (defined $tag{'age'}) {
+                       print "<td><i>$tag{'age'}</i></td>\n";
+               } else {
+                       print "<td></td>\n";
+               }
+               print "<td>" .
+                     $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
+                              -class => "list name"}, esc_html($tag{'name'})) .
+                     "</td>\n" .
+                     "<td>";
+               if (defined $comment) {
+                       print format_subject_html($comment, $comment_short,
+                                                 href(action=>"tag", hash=>$tag{'id'}));
+               }
+               print "</td>\n" .
+                     "<td class=\"selflink\">";
+               if ($tag{'type'} eq "tag") {
+                       print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
+               } else {
+                       print "&nbsp;";
+               }
+               print "</td>\n" .
+                     "<td class=\"link\">" . " | " .
+                     $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
+               if ($tag{'reftype'} eq "commit") {
+                       print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
+                             " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
+               } elsif ($tag{'reftype'} eq "blob") {
+                       print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
+               }
+               print "</td>\n" .
+                     "</tr>";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"5\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+sub git_heads_body {
+       # uses global variable $project
+       my ($headlist, $head_at, $from, $to, $extra) = @_;
+       $from = 0 unless defined $from;
+       $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
+
+       print "<table class=\"heads\">\n";
+       my $alternate = 1;
+       for (my $i = $from; $i <= $to; $i++) {
+               my $entry = $headlist->[$i];
+               my %ref = %$entry;
+               my $curr = defined $head_at && $ref{'id'} eq $head_at;
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               print "<td><i>$ref{'age'}</i></td>\n" .
+                     ($curr ? "<td class=\"current_head\">" : "<td>") .
+                     $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
+                              -class => "list name"},esc_html($ref{'name'})) .
+                     "</td>\n" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
+                     $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
+                     $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
+                     "</td>\n" .
+                     "</tr>";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"3\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+# Display a single remote block
+sub git_remote_block {
+       my ($remote, $rdata, $limit, $head) = @_;
+
+       my $heads = $rdata->{'heads'};
+       my $fetch = $rdata->{'fetch'};
+       my $push = $rdata->{'push'};
+
+       my $urls_table = "<table class=\"projects_list\">\n" ;
+
+       if (defined $fetch) {
+               if ($fetch eq $push) {
+                       $urls_table .= format_repo_url("URL", $fetch);
+               } else {
+                       $urls_table .= format_repo_url("Fetch URL", $fetch);
+                       $urls_table .= format_repo_url("Push URL", $push) if defined $push;
+               }
+       } elsif (defined $push) {
+               $urls_table .= format_repo_url("Push URL", $push);
+       } else {
+               $urls_table .= format_repo_url("", "No remote URL");
+       }
+
+       $urls_table .= "</table>\n";
+
+       my $dots;
+       if (defined $limit && $limit < @$heads) {
+               $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
+       }
+
+       print $urls_table;
+       git_heads_body($heads, $head, 0, $limit, $dots);
+}
+
+# Display a list of remote names with the respective fetch and push URLs
+sub git_remotes_list {
+       my ($remotedata, $limit) = @_;
+       print "<table class=\"heads\">\n";
+       my $alternate = 1;
+       my @remotes = sort keys %$remotedata;
+
+       my $limited = $limit && $limit < @remotes;
+
+       $#remotes = $limit - 1 if $limited;
+
+       while (my $remote = shift @remotes) {
+               my $rdata = $remotedata->{$remote};
+               my $fetch = $rdata->{'fetch'};
+               my $push = $rdata->{'push'};
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               print "<td>" .
+                     $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
+                              -class=> "list name"},esc_html($remote)) .
+                     "</td>";
+               print "<td class=\"link\">" .
+                     (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
+                     " | " .
+                     (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
+                     "</td>";
+
+               print "</tr>\n";
+       }
+
+       if ($limited) {
+               print "<tr>\n" .
+                     "<td colspan=\"3\">" .
+                     $cgi->a({-href => href(action=>"remotes")}, "...") .
+                     "</td>\n" . "</tr>\n";
+       }
+
+       print "</table>";
+}
+
+# Display remote heads grouped by remote, unless there are too many
+# remotes, in which case we only display the remote names
+sub git_remotes_body {
+       my ($remotedata, $limit, $head) = @_;
+       if ($limit and $limit < keys %$remotedata) {
+               git_remotes_list($remotedata, $limit);
+       } else {
+               fill_remote_heads($remotedata);
+               while (my ($remote, $rdata) = each %$remotedata) {
+                       git_print_section({-class=>"remote", -id=>$remote},
+                               ["remotes", $remote, $remote], sub {
+                                       git_remote_block($remote, $rdata, $limit, $head);
+                               });
+               }
+       }
+}
+
+sub git_search_message {
+       my %co = @_;
+
+       my $greptype;
+       if ($searchtype eq 'commit') {
+               $greptype = "--grep=";
+       } elsif ($searchtype eq 'author') {
+               $greptype = "--author=";
+       } elsif ($searchtype eq 'committer') {
+               $greptype = "--committer=";
+       }
+       $greptype .= $searchtext;
+       my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
+                                      $greptype, '--regexp-ignore-case',
+                                      $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
+
+       my $paging_nav = '';
+       if ($page > 0) {
+               $paging_nav .=
+                       $cgi->a({-href => href(-replay=>1, page=>undef)},
+                               "first") .
+                       " &sdot; " .
+                       $cgi->a({-href => href(-replay=>1, page=>$page-1),
+                                -accesskey => "p", -title => "Alt-p"}, "prev");
+       } else {
+               $paging_nav .= "first &sdot; prev";
+       }
+       my $next_link = '';
+       if ($#commitlist >= 100) {
+               $next_link =
+                       $cgi->a({-href => href(-replay=>1, page=>$page+1),
+                                -accesskey => "n", -title => "Alt-n"}, "next");
+               $paging_nav .= " &sdot; $next_link";
+       } else {
+               $paging_nav .= " &sdot; next";
+       }
+
+       git_header_html();
+
+       git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
+       git_print_header_div('commit', esc_html($co{'title'}), $hash);
+       if ($page == 0 && !@commitlist) {
+               print "<p>No match.</p>\n";
+       } else {
+               git_search_grep_body(\@commitlist, 0, 99, $next_link);
+       }
+
+       git_footer_html();
+}
+
+sub git_search_changes {
+       my %co = @_;
+
+       local $/ = "\n";
+       open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
+               '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
+               ($search_use_regexp ? '--pickaxe-regex' : ())
+                       or die_error(500, "Open git-log failed");
+
+       git_header_html();
+
+       git_print_page_nav('','', $hash,$co{'tree'},$hash);
+       git_print_header_div('commit', esc_html($co{'title'}), $hash);
+
+       print "<table class=\"pickaxe search\">\n";
+       my $alternate = 1;
+       undef %co;
+       my @files;
+       while (my $line = <$fd>) {
+               chomp $line;
+               next unless $line;
+
+               my %set = parse_difftree_raw_line($line);
+               if (defined $set{'commit'}) {
+                       # finish previous commit
+                       if (%co) {
+                               print "</td>\n" .
+                                     "<td class=\"link\">" .
+                                     $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
+                                             "commit") .
+                                     " | " .
+                                     $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
+                                                            hash_base=>$co{'id'})},
+                                             "tree") .
+                                     "</td>\n" .
+                                     "</tr>\n";
+                       }
+
+                       if ($alternate) {
+                               print "<tr class=\"dark\">\n";
+                       } else {
+                               print "<tr class=\"light\">\n";
+                       }
+                       $alternate ^= 1;
+                       %co = parse_commit($set{'commit'});
+                       my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
+                       print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+                             "<td><i>$author</i></td>\n" .
+                             "<td>" .
+                             $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
+                                     -class => "list subject"},
+                                     chop_and_escape_str($co{'title'}, 50) . "<br/>");
+               } elsif (defined $set{'to_id'}) {
+                       next if is_deleted(\%set);
+
+                       print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
+                                                    hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
+                                     -class => "list"},
+                                     "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
+                             "<br/>\n";
+               }
+       }
+       close $fd;
+
+       # finish last commit (warning: repetition!)
+       if (%co) {
+               print "</td>\n" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
+                             "commit") .
+                     " | " .
+                     $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
+                                            hash_base=>$co{'id'})},
+                             "tree") .
+                     "</td>\n" .
+                     "</tr>\n";
+       }
+
+       print "</table>\n";
+
+       git_footer_html();
+}
+
+sub git_search_files {
+       my %co = @_;
+
+       local $/ = "\n";
+       open my $fd, "-|", git_cmd(), 'grep', '-n', '-z',
+               $search_use_regexp ? ('-E', '-i') : '-F',
+               $searchtext, $co{'tree'}
+                       or die_error(500, "Open git-grep failed");
+
+       git_header_html();
+
+       git_print_page_nav('','', $hash,$co{'tree'},$hash);
+       git_print_header_div('commit', esc_html($co{'title'}), $hash);
+
+       print "<table class=\"grep_search\">\n";
+       my $alternate = 1;
+       my $matches = 0;
+       my $lastfile = '';
+       my $file_href;
+       while (my $line = <$fd>) {
+               chomp $line;
+               my ($file, $lno, $ltext, $binary);
+               last if ($matches++ > 1000);
+               if ($line =~ /^Binary file (.+) matches$/) {
+                       $file = $1;
+                       $binary = 1;
+               } else {
+                       ($file, $lno, $ltext) = split(/\0/, $line, 3);
+                       $file =~ s/^$co{'tree'}://;
+               }
+               if ($file ne $lastfile) {
+                       $lastfile and print "</td></tr>\n";
+                       if ($alternate++) {
+                               print "<tr class=\"dark\">\n";
+                       } else {
+                               print "<tr class=\"light\">\n";
+                       }
+                       $file_href = href(action=>"blob", hash_base=>$co{'id'},
+                                         file_name=>$file);
+                       print "<td class=\"list\">".
+                               $cgi->a({-href => $file_href, -class => "list"}, esc_path($file));
+                       print "</td><td>\n";
+                       $lastfile = $file;
+               }
+               if ($binary) {
+                       print "<div class=\"binary\">Binary file</div>\n";
+               } else {
+                       $ltext = untabify($ltext);
+                       if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
+                               $ltext = esc_html($1, -nbsp=>1);
+                               $ltext .= '<span class="match">';
+                               $ltext .= esc_html($2, -nbsp=>1);
+                               $ltext .= '</span>';
+                               $ltext .= esc_html($3, -nbsp=>1);
+                       } else {
+                               $ltext = esc_html($ltext, -nbsp=>1);
+                       }
+                       print "<div class=\"pre\">" .
+                               $cgi->a({-href => $file_href.'#l'.$lno,
+                                       -class => "linenr"}, sprintf('%4i', $lno)) .
+                               ' ' .  $ltext . "</div>\n";
+               }
+       }
+       if ($lastfile) {
+               print "</td></tr>\n";
+               if ($matches > 1000) {
+                       print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
+               }
+       } else {
+               print "<div class=\"diff nodifferences\">No matches found</div>\n";
+       }
+       close $fd;
+
+       print "</table>\n";
+
+       git_footer_html();
+}
+
+sub git_search_grep_body {
+       my ($commitlist, $from, $to, $extra) = @_;
+       $from = 0 unless defined $from;
+       $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
+
+       print "<table class=\"commit_search\">\n";
+       my $alternate = 1;
+       for (my $i = $from; $i <= $to; $i++) {
+               my %co = %{$commitlist->[$i]};
+               if (!%co) {
+                       next;
+               }
+               my $commit = $co{'id'};
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+                     format_author_html('td', \%co, 15, 5) .
+                     "<td>" .
+                     $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
+                              -class => "list subject"},
+                             chop_and_escape_str($co{'title'}, 50) . "<br/>");
+               my $comment = $co{'comment'};
+               foreach my $line (@$comment) {
+                       if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
+                               my ($lead, $match, $trail) = ($1, $2, $3);
+                               $match = chop_str($match, 70, 5, 'center');
+                               my $contextlen = int((80 - length($match))/2);
+                               $contextlen = 30 if ($contextlen > 30);
+                               $lead  = chop_str($lead,  $contextlen, 10, 'left');
+                               $trail = chop_str($trail, $contextlen, 10, 'right');
+
+                               $lead  = esc_html($lead);
+                               $match = esc_html($match);
+                               $trail = esc_html($trail);
+
+                               print "$lead<span class=\"match\">$match</span>$trail<br />";
+                       }
+               }
+               print "</td>\n" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
+                     " | " .
+                     $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
+                     " | " .
+                     $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
+               print "</td>\n" .
+                     "</tr>\n";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"3\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+## ======================================================================
+## ======================================================================
+## actions
+
+sub git_project_list {
+       my $order = $input_params{'order'};
+       if (defined $order && $order !~ m/none|project|descr|owner|age/) {
+               die_error(400, "Unknown order parameter");
+       }
+
+       my @list = git_get_projects_list($project_filter, $strict_export);
+       if (!@list) {
+               die_error(404, "No projects found");
+       }
+
+       git_header_html();
+       if (defined $home_text && -f $home_text) {
+               print "<div class=\"index_include\">\n";
+               insert_file($home_text);
+               print "</div>\n";
+       }
+
+       git_project_search_form($searchtext, $search_use_regexp);
+       git_project_list_body(\@list, $order);
+       git_footer_html();
+}
+
+sub git_forks {
+       my $order = $input_params{'order'};
+       if (defined $order && $order !~ m/none|project|descr|owner|age/) {
+               die_error(400, "Unknown order parameter");
+       }
+
+       my $filter = $project;
+       $filter =~ s/\.git$//;
+       my @list = git_get_projects_list($filter);
+       if (!@list) {
+               die_error(404, "No forks found");
+       }
+
+       git_header_html();
+       git_print_page_nav('','');
+       git_print_header_div('summary', "$project forks");
+       git_project_list_body(\@list, $order);
+       git_footer_html();
+}
+
+sub git_project_index {
+       my @projects = git_get_projects_list($project_filter, $strict_export);
+       if (!@projects) {
+               die_error(404, "No projects found");
+       }
+
+       print $cgi->header(
+               -type => 'text/plain',
+               -charset => 'utf-8',
+               -content_disposition => 'inline; filename="index.aux"');
+
+       foreach my $pr (@projects) {
+               if (!exists $pr->{'owner'}) {
+                       $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
+               }
+
+               my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
+               # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
+               $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
+               $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
+               $path  =~ s/ /\+/g;
+               $owner =~ s/ /\+/g;
+
+               print "$path $owner\n";
+       }
+}
+
+sub git_summary {
+       my $descr = git_get_project_description($project) || "none";
+       my %co = parse_commit("HEAD");
+       my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
+       my $head = $co{'id'};
+       my $remote_heads = gitweb_check_feature('remote_heads');
+
+       my $owner = git_get_project_owner($project);
+
+       my $refs = git_get_references();
+       # These get_*_list functions return one more to allow us to see if
+       # there are more ...
+       my @taglist  = git_get_tags_list(16);
+       my @headlist = git_get_heads_list(16);
+       my %remotedata = $remote_heads ? git_get_remotes_list() : ();
+       my @forklist;
+       my $check_forks = gitweb_check_feature('forks');
+
+       if ($check_forks) {
+               # find forks of a project
+               my $filter = $project;
+               $filter =~ s/\.git$//;
+               @forklist = git_get_projects_list($filter);
+               # filter out forks of forks
+               @forklist = filter_forks_from_projects_list(\@forklist)
+                       if (@forklist);
+       }
+
+       git_header_html();
+       git_print_page_nav('summary','', $head);
+
+       print "<div class=\"title\">&nbsp;</div>\n";
+       print "<table class=\"projects_list\">\n" .
+             "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n";
+        if ($owner and not $omit_owner) {
+               print  "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
+        }
+       if (defined $cd{'rfc2822'}) {
+               print "<tr id=\"metadata_lchange\"><td>last change</td>" .
+                     "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
+       }
+
+       # use per project git URL list in $projectroot/$project/cloneurl
+       # or make project git URL from git base URL and project name
+       my $url_tag = "URL";
+       my @url_list = git_get_project_url_list($project);
+       @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
+       foreach my $git_url (@url_list) {
+               next unless $git_url;
+               print format_repo_url($url_tag, $git_url);
+               $url_tag = "";
+       }
+
+       # Tag cloud
+       my $show_ctags = gitweb_check_feature('ctags');
+       if ($show_ctags) {
+               my $ctags = git_get_project_ctags($project);
+               if (%$ctags) {
+                       # without ability to add tags, don't show if there are none
+                       my $cloud = git_populate_project_tagcloud($ctags);
+                       print "<tr id=\"metadata_ctags\">" .
+                             "<td>content tags</td>" .
+                             "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
+                             "</tr>\n";
+               }
+       }
+
+       print "</table>\n";
+
+       # If XSS prevention is on, we don't include README.html.
+       # TODO: Allow a readme in some safe format.
+       if (!$prevent_xss && -s "$projectroot/$project/README.html") {
+               print "<div class=\"title\">readme</div>\n" .
+                     "<div class=\"readme\">\n";
+               insert_file("$projectroot/$project/README.html");
+               print "\n</div>\n"; # class="readme"
+       }
+
+       # we need to request one more than 16 (0..15) to check if
+       # those 16 are all
+       my @commitlist = $head ? parse_commits($head, 17) : ();
+       if (@commitlist) {
+               git_print_header_div('shortlog');
+               git_shortlog_body(\@commitlist, 0, 15, $refs,
+                                 $#commitlist <=  15 ? undef :
+                                 $cgi->a({-href => href(action=>"shortlog")}, "..."));
+       }
+
+       if (@taglist) {
+               git_print_header_div('tags');
+               git_tags_body(\@taglist, 0, 15,
+                             $#taglist <=  15 ? undef :
+                             $cgi->a({-href => href(action=>"tags")}, "..."));
+       }
+
+       if (@headlist) {
+               git_print_header_div('heads');
+               git_heads_body(\@headlist, $head, 0, 15,
+                              $#headlist <= 15 ? undef :
+                              $cgi->a({-href => href(action=>"heads")}, "..."));
+       }
+
+       if (%remotedata) {
+               git_print_header_div('remotes');
+               git_remotes_body(\%remotedata, 15, $head);
+       }
+
+       if (@forklist) {
+               git_print_header_div('forks');
+               git_project_list_body(\@forklist, 'age', 0, 15,
+                                     $#forklist <= 15 ? undef :
+                                     $cgi->a({-href => href(action=>"forks")}, "..."),
+                                     'no_header');
+       }
+
+       git_footer_html();
+}
+
+sub git_tag {
+       my %tag = parse_tag($hash);
+
+       if (! %tag) {
+               die_error(404, "Unknown tag object");
+       }
+
+       my $head = git_get_head_hash($project);
+       git_header_html();
+       git_print_page_nav('','', $head,undef,$head);
+       git_print_header_div('commit', esc_html($tag{'name'}), $hash);
+       print "<div class=\"title_text\">\n" .
+             "<table class=\"object_header\">\n" .
+             "<tr>\n" .
+             "<td>object</td>\n" .
+             "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
+                              $tag{'object'}) . "</td>\n" .
+             "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
+                                             $tag{'type'}) . "</td>\n" .
+             "</tr>\n";
+       if (defined($tag{'author'})) {
+               git_print_authorship_rows(\%tag, 'author');
+       }
+       print "</table>\n\n" .
+             "</div>\n";
+       print "<div class=\"page_body\">";
+       my $comment = $tag{'comment'};
+       foreach my $line (@$comment) {
+               chomp $line;
+               print esc_html($line, -nbsp=>1) . "<br/>\n";
+       }
+       print "</div>\n";
+       git_footer_html();
+}
+
+sub git_blame_common {
+       my $format = shift || 'porcelain';
+       if ($format eq 'porcelain' && $input_params{'javascript'}) {
+               $format = 'incremental';
+               $action = 'blame_incremental'; # for page title etc
+       }
+
+       # permissions
+       gitweb_check_feature('blame')
+               or die_error(403, "Blame view not allowed");
+
+       # error checking
+       die_error(400, "No file name given") unless $file_name;
+       $hash_base ||= git_get_head_hash($project);
+       die_error(404, "Couldn't find base commit") unless $hash_base;
+       my %co = parse_commit($hash_base)
+               or die_error(404, "Commit not found");
+       my $ftype = "blob";
+       if (!defined $hash) {
+               $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
+                       or die_error(404, "Error looking up file");
+       } else {
+               $ftype = git_get_type($hash);
+               if ($ftype !~ "blob") {
+                       die_error(400, "Object is not a blob");
+               }
+       }
+
+       my $fd;
+       if ($format eq 'incremental') {
+               # get file contents (as base)
+               open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
+                       or die_error(500, "Open git-cat-file failed");
+       } elsif ($format eq 'data') {
+               # run git-blame --incremental
+               open $fd, "-|", git_cmd(), "blame", "--incremental",
+                       $hash_base, "--", $file_name
+                       or die_error(500, "Open git-blame --incremental failed");
+       } else {
+               # run git-blame --porcelain
+               open $fd, "-|", git_cmd(), "blame", '-p',
+                       $hash_base, '--', $file_name
+                       or die_error(500, "Open git-blame --porcelain failed");
+       }
+       binmode $fd, ':utf8';
+
+       # incremental blame data returns early
+       if ($format eq 'data') {
+               print $cgi->header(
+                       -type=>"text/plain", -charset => "utf-8",
+                       -status=> "200 OK");
+               local $| = 1; # output autoflush
+               while (my $line = <$fd>) {
+                       print to_utf8($line);
+               }
+               close $fd
+                       or print "ERROR $!\n";
+
+               print 'END';
+               if (defined $t0 && gitweb_check_feature('timed')) {
+                       print ' '.
+                             tv_interval($t0, [ gettimeofday() ]).
+                             ' '.$number_of_git_cmds;
+               }
+               print "\n";
+
+               return;
+       }
+
+       # page header
+       git_header_html();
+       my $formats_nav =
+               $cgi->a({-href => href(action=>"blob", -replay=>1)},
+                       "blob") .
+               " | ";
+       if ($format eq 'incremental') {
+               $formats_nav .=
+                       $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
+                               "blame") . " (non-incremental)";
+       } else {
+               $formats_nav .=
+                       $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
+                               "blame") . " (incremental)";
+       }
+       $formats_nav .=
+               " | " .
+               $cgi->a({-href => href(action=>"history", -replay=>1)},
+                       "history") .
+               " | " .
+               $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
+                       "HEAD");
+       git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+       git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
+       git_print_page_path($file_name, $ftype, $hash_base);
+
+       # page body
+       if ($format eq 'incremental') {
+               print "<noscript>\n<div class=\"error\"><center><b>\n".
+                     "This page requires JavaScript to run.\n Use ".
+                     $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
+                             'this page').
+                     " instead.\n".
+                     "</b></center></div>\n</noscript>\n";
+
+               print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
+       }
+
+       print qq!<div class="page_body">\n!;
+       print qq!<div id="progress_info">... / ...</div>\n!
+               if ($format eq 'incremental');
+       print qq!<table id="blame_table" class="blame" width="100%">\n!.
+             #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
+             qq!<thead>\n!.
+             qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
+             qq!</thead>\n!.
+             qq!<tbody>\n!;
+
+       my @rev_color = qw(light dark);
+       my $num_colors = scalar(@rev_color);
+       my $current_color = 0;
+
+       if ($format eq 'incremental') {
+               my $color_class = $rev_color[$current_color];
+
+               #contents of a file
+               my $linenr = 0;
+       LINE:
+               while (my $line = <$fd>) {
+                       chomp $line;
+                       $linenr++;
+
+                       print qq!<tr id="l$linenr" class="$color_class">!.
+                             qq!<td class="sha1"><a href=""> </a></td>!.
+                             qq!<td class="linenr">!.
+                             qq!<a class="linenr" href="">$linenr</a></td>!;
+                       print qq!<td class="pre">! . esc_html($line) . "</td>\n";
+                       print qq!</tr>\n!;
+               }
+
+       } else { # porcelain, i.e. ordinary blame
+               my %metainfo = (); # saves information about commits
+
+               # blame data
+       LINE:
+               while (my $line = <$fd>) {
+                       chomp $line;
+                       # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
+                       # no <lines in group> for subsequent lines in group of lines
+                       my ($full_rev, $orig_lineno, $lineno, $group_size) =
+                          ($line =~ /^($oid_regex) (\d+) (\d+)(?: (\d+))?$/);
+                       if (!exists $metainfo{$full_rev}) {
+                               $metainfo{$full_rev} = { 'nprevious' => 0 };
+                       }
+                       my $meta = $metainfo{$full_rev};
+                       my $data;
+                       while ($data = <$fd>) {
+                               chomp $data;
+                               last if ($data =~ s/^\t//); # contents of line
+                               if ($data =~ /^(\S+)(?: (.*))?$/) {
+                                       $meta->{$1} = $2 unless exists $meta->{$1};
+                               }
+                               if ($data =~ /^previous /) {
+                                       $meta->{'nprevious'}++;
+                               }
+                       }
+                       my $short_rev = substr($full_rev, 0, 8);
+                       my $author = $meta->{'author'};
+                       my %date =
+                               parse_date($meta->{'author-time'}, $meta->{'author-tz'});
+                       my $date = $date{'iso-tz'};
+                       if ($group_size) {
+                               $current_color = ($current_color + 1) % $num_colors;
+                       }
+                       my $tr_class = $rev_color[$current_color];
+                       $tr_class .= ' boundary' if (exists $meta->{'boundary'});
+                       $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
+                       $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
+                       print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
+                       if ($group_size) {
+                               print "<td class=\"sha1\"";
+                               print " title=\"". esc_html($author) . ", $date\"";
+                               print " rowspan=\"$group_size\"" if ($group_size > 1);
+                               print ">";
+                               print $cgi->a({-href => href(action=>"commit",
+                                                            hash=>$full_rev,
+                                                            file_name=>$file_name)},
+                                             esc_html($short_rev));
+                               if ($group_size >= 2) {
+                                       my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
+                                       if (@author_initials) {
+                                               print "<br />" .
+                                                     esc_html(join('', @author_initials));
+                                               #           or join('.', ...)
+                                       }
+                               }
+                               print "</td>\n";
+                       }
+                       # 'previous' <sha1 of parent commit> <filename at commit>
+                       if (exists $meta->{'previous'} &&
+                           $meta->{'previous'} =~ /^($oid_regex) (.*)$/) {
+                               $meta->{'parent'} = $1;
+                               $meta->{'file_parent'} = unquote($2);
+                       }
+                       my $linenr_commit =
+                               exists($meta->{'parent'}) ?
+                               $meta->{'parent'} : $full_rev;
+                       my $linenr_filename =
+                               exists($meta->{'file_parent'}) ?
+                               $meta->{'file_parent'} : unquote($meta->{'filename'});
+                       my $blamed = href(action => 'blame',
+                                         file_name => $linenr_filename,
+                                         hash_base => $linenr_commit);
+                       print "<td class=\"linenr\">";
+                       print $cgi->a({ -href => "$blamed#l$orig_lineno",
+                                       -class => "linenr" },
+                                     esc_html($lineno));
+                       print "</td>";
+                       print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
+                       print "</tr>\n";
+               } # end while
+
+       }
+
+       # footer
+       print "</tbody>\n".
+             "</table>\n"; # class="blame"
+       print "</div>\n";   # class="blame_body"
+       close $fd
+               or print "Reading blob failed\n";
+
+       git_footer_html();
+}
+
+sub git_blame {
+       git_blame_common();
+}
+
+sub git_blame_incremental {
+       git_blame_common('incremental');
+}
+
+sub git_blame_data {
+       git_blame_common('data');
+}
+
+sub git_tags {
+       my $head = git_get_head_hash($project);
+       git_header_html();
+       git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
+       git_print_header_div('summary', $project);
+
+       my @tagslist = git_get_tags_list();
+       if (@tagslist) {
+               git_tags_body(\@tagslist);
+       }
+       git_footer_html();
+}
+
+sub git_heads {
+       my $head = git_get_head_hash($project);
+       git_header_html();
+       git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
+       git_print_header_div('summary', $project);
+
+       my @headslist = git_get_heads_list();
+       if (@headslist) {
+               git_heads_body(\@headslist, $head);
+       }
+       git_footer_html();
+}
+
+# used both for single remote view and for list of all the remotes
+sub git_remotes {
+       gitweb_check_feature('remote_heads')
+               or die_error(403, "Remote heads view is disabled");
+
+       my $head = git_get_head_hash($project);
+       my $remote = $input_params{'hash'};
+
+       my $remotedata = git_get_remotes_list($remote);
+       die_error(500, "Unable to get remote information") unless defined $remotedata;
+
+       unless (%$remotedata) {
+               die_error(404, defined $remote ?
+                       "Remote $remote not found" :
+                       "No remotes found");
+       }
+
+       git_header_html(undef, undef, -action_extra => $remote);
+       git_print_page_nav('', '',  $head, undef, $head,
+               format_ref_views($remote ? '' : 'remotes'));
+
+       fill_remote_heads($remotedata);
+       if (defined $remote) {
+               git_print_header_div('remotes', "$remote remote for $project");
+               git_remote_block($remote, $remotedata->{$remote}, undef, $head);
+       } else {
+               git_print_header_div('summary', "$project remotes");
+               git_remotes_body($remotedata, undef, $head);
+       }
+
+       git_footer_html();
+}
+
+sub git_blob_plain {
+       my $type = shift;
+       my $expires;
+
+       if (!defined $hash) {
+               if (defined $file_name) {
+                       my $base = $hash_base || git_get_head_hash($project);
+                       $hash = git_get_hash_by_path($base, $file_name, "blob")
+                               or die_error(404, "Cannot find file");
+               } else {
+                       die_error(400, "No file name defined");
+               }
+       } elsif ($hash =~ m/^$oid_regex$/) {
+               # blobs defined by non-textual hash id's can be cached
+               $expires = "+1d";
+       }
+
+       open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
+               or die_error(500, "Open git-cat-file blob '$hash' failed");
+
+       # content-type (can include charset)
+       $type = blob_contenttype($fd, $file_name, $type);
+
+       # "save as" filename, even when no $file_name is given
+       my $save_as = "$hash";
+       if (defined $file_name) {
+               $save_as = $file_name;
+       } elsif ($type =~ m/^text\//) {
+               $save_as .= '.txt';
+       }
+
+       # With XSS prevention on, blobs of all types except a few known safe
+       # ones are served with "Content-Disposition: attachment" to make sure
+       # they don't run in our security domain.  For certain image types,
+       # blob view writes an <img> tag referring to blob_plain view, and we
+       # want to be sure not to break that by serving the image as an
+       # attachment (though Firefox 3 doesn't seem to care).
+       my $sandbox = $prevent_xss &&
+               $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
+
+       # serve text/* as text/plain
+       if ($prevent_xss &&
+           ($type =~ m!^text/[a-z]+\b(.*)$! ||
+            ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
+               my $rest = $1;
+               $rest = defined $rest ? $rest : '';
+               $type = "text/plain$rest";
+       }
+
+       print $cgi->header(
+               -type => $type,
+               -expires => $expires,
+               -content_disposition =>
+                       ($sandbox ? 'attachment' : 'inline')
+                       . '; filename="' . $save_as . '"');
+       local $/ = undef;
+       local *FCGI::Stream::PRINT = $FCGI_Stream_PRINT_raw;
+       binmode STDOUT, ':raw';
+       print <$fd>;
+       binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
+       close $fd;
+}
+
+sub git_blob {
+       my $expires;
+
+       if (!defined $hash) {
+               if (defined $file_name) {
+                       my $base = $hash_base || git_get_head_hash($project);
+                       $hash = git_get_hash_by_path($base, $file_name, "blob")
+                               or die_error(404, "Cannot find file");
+               } else {
+                       die_error(400, "No file name defined");
+               }
+       } elsif ($hash =~ m/^$oid_regex$/) {
+               # blobs defined by non-textual hash id's can be cached
+               $expires = "+1d";
+       }
+
+       my $have_blame = gitweb_check_feature('blame');
+       open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
+               or die_error(500, "Couldn't cat $file_name, $hash");
+       my $mimetype = blob_mimetype($fd, $file_name);
+       # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
+       if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
+               close $fd;
+               return git_blob_plain($mimetype);
+       }
+       # we can have blame only for text/* mimetype
+       $have_blame &&= ($mimetype =~ m!^text/!);
+
+       my $highlight = gitweb_check_feature('highlight');
+       my $syntax = guess_file_syntax($highlight, $file_name);
+       $fd = run_highlighter($fd, $highlight, $syntax);
+
+       git_header_html(undef, $expires);
+       my $formats_nav = '';
+       if (defined $hash_base && (my %co = parse_commit($hash_base))) {
+               if (defined $file_name) {
+                       if ($have_blame) {
+                               $formats_nav .=
+                                       $cgi->a({-href => href(action=>"blame", -replay=>1)},
+                                               "blame") .
+                                       " | ";
+                       }
+                       $formats_nav .=
+                               $cgi->a({-href => href(action=>"history", -replay=>1)},
+                                       "history") .
+                               " | " .
+                               $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
+                                       "raw") .
+                               " | " .
+                               $cgi->a({-href => href(action=>"blob",
+                                                      hash_base=>"HEAD", file_name=>$file_name)},
+                                       "HEAD");
+               } else {
+                       $formats_nav .=
+                               $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
+                                       "raw");
+               }
+               git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+               git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
+       } else {
+               print "<div class=\"page_nav\">\n" .
+                     "<br/><br/></div>\n" .
+                     "<div class=\"title\">".esc_html($hash)."</div>\n";
+       }
+       git_print_page_path($file_name, "blob", $hash_base);
+       print "<div class=\"page_body\">\n";
+       if ($mimetype =~ m!^image/!) {
+               print qq!<img class="blob" type="!.esc_attr($mimetype).qq!"!;
+               if ($file_name) {
+                       print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
+               }
+               print qq! src="! .
+                     esc_attr(href(action=>"blob_plain", hash=>$hash,
+                          hash_base=>$hash_base, file_name=>$file_name)) .
+                     qq!" />\n!;
+       } else {
+               my $nr;
+               while (my $line = <$fd>) {
+                       chomp $line;
+                       $nr++;
+                       $line = untabify($line);
+                       printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
+                              $nr, esc_attr(href(-replay => 1)), $nr, $nr,
+                              $highlight ? sanitize($line) : esc_html($line, -nbsp=>1);
+               }
+       }
+       close $fd
+               or print "Reading blob failed.\n";
+       print "</div>";
+       git_footer_html();
+}
+
+sub git_tree {
+       if (!defined $hash_base) {
+               $hash_base = "HEAD";
+       }
+       if (!defined $hash) {
+               if (defined $file_name) {
+                       $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
+               } else {
+                       $hash = $hash_base;
+               }
+       }
+       die_error(404, "No such tree") unless defined($hash);
+
+       my $show_sizes = gitweb_check_feature('show-sizes');
+       my $have_blame = gitweb_check_feature('blame');
+
+       my @entries = ();
+       {
+               local $/ = "\0";
+               open my $fd, "-|", git_cmd(), "ls-tree", '-z',
+                       ($show_sizes ? '-l' : ()), @extra_options, $hash
+                       or die_error(500, "Open git-ls-tree failed");
+               @entries = map { chomp; $_ } <$fd>;
+               close $fd
+                       or die_error(404, "Reading tree failed");
+       }
+
+       my $refs = git_get_references();
+       my $ref = format_ref_marker($refs, $hash_base);
+       git_header_html();
+       my $basedir = '';
+       if (defined $hash_base && (my %co = parse_commit($hash_base))) {
+               my @views_nav = ();
+               if (defined $file_name) {
+                       push @views_nav,
+                               $cgi->a({-href => href(action=>"history", -replay=>1)},
+                                       "history"),
+                               $cgi->a({-href => href(action=>"tree",
+                                                      hash_base=>"HEAD", file_name=>$file_name)},
+                                       "HEAD"),
+               }
+               my $snapshot_links = format_snapshot_links($hash);
+               if (defined $snapshot_links) {
+                       # FIXME: Should be available when we have no hash base as well.
+                       push @views_nav, $snapshot_links;
+               }
+               git_print_page_nav('tree','', $hash_base, undef, undef,
+                                  join(' | ', @views_nav));
+               git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
+       } else {
+               undef $hash_base;
+               print "<div class=\"page_nav\">\n";
+               print "<br/><br/></div>\n";
+               print "<div class=\"title\">".esc_html($hash)."</div>\n";
+       }
+       if (defined $file_name) {
+               $basedir = $file_name;
+               if ($basedir ne '' && substr($basedir, -1) ne '/') {
+                       $basedir .= '/';
+               }
+               git_print_page_path($file_name, 'tree', $hash_base);
+       }
+       print "<div class=\"page_body\">\n";
+       print "<table class=\"tree\">\n";
+       my $alternate = 1;
+       # '..' (top directory) link if possible
+       if (defined $hash_base &&
+           defined $file_name && $file_name =~ m![^/]+$!) {
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+
+               my $up = $file_name;
+               $up =~ s!/?[^/]+$!!;
+               undef $up unless $up;
+               # based on git_print_tree_entry
+               print '<td class="mode">' . mode_str('040000') . "</td>\n";
+               print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
+               print '<td class="list">';
+               print $cgi->a({-href => href(action=>"tree",
+                                            hash_base=>$hash_base,
+                                            file_name=>$up)},
+                             "..");
+               print "</td>\n";
+               print "<td class=\"link\"></td>\n";
+
+               print "</tr>\n";
+       }
+       foreach my $line (@entries) {
+               my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
+
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+
+               git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
+
+               print "</tr>\n";
+       }
+       print "</table>\n" .
+             "</div>";
+       git_footer_html();
+}
+
+sub sanitize_for_filename {
+    my $name = shift;
+
+    $name =~ s!/!-!g;
+    $name =~ s/[^[:alnum:]_.-]//g;
+
+    return $name;
+}
+
+sub snapshot_name {
+       my ($project, $hash) = @_;
+
+       # path/to/project.git  -> project
+       # path/to/project/.git -> project
+       my $name = to_utf8($project);
+       $name =~ s,([^/])/*\.git$,$1,;
+       $name = sanitize_for_filename(basename($name));
+
+       my $ver = $hash;
+       if ($hash =~ /^[0-9a-fA-F]+$/) {
+               # shorten SHA-1 hash
+               my $full_hash = git_get_full_hash($project, $hash);
+               if ($full_hash =~ /^$hash/ && length($hash) > 7) {
+                       $ver = git_get_short_hash($project, $hash);
+               }
+       } elsif ($hash =~ m!^refs/tags/(.*)$!) {
+               # tags don't need shortened SHA-1 hash
+               $ver = $1;
+       } else {
+               # branches and other need shortened SHA-1 hash
+               my $strip_refs = join '|', map { quotemeta } get_branch_refs();
+               if ($hash =~ m!^refs/($strip_refs|remotes)/(.*)$!) {
+                       my $ref_dir = (defined $1) ? $1 : '';
+                       $ver = $2;
+
+                       $ref_dir = sanitize_for_filename($ref_dir);
+                       # for refs neither in heads nor remotes we want to
+                       # add a ref dir to archive name
+                       if ($ref_dir ne '' and $ref_dir ne 'heads' and $ref_dir ne 'remotes') {
+                               $ver = $ref_dir . '-' . $ver;
+                       }
+               }
+               $ver .= '-' . git_get_short_hash($project, $hash);
+       }
+       # special case of sanitization for filename - we change
+       # slashes to dots instead of dashes
+       # in case of hierarchical branch names
+       $ver =~ s!/!.!g;
+       $ver =~ s/[^[:alnum:]_.-]//g;
+
+       # name = project-version_string
+       $name = "$name-$ver";
+
+       return wantarray ? ($name, $name) : $name;
+}
+
+sub exit_if_unmodified_since {
+       my ($latest_epoch) = @_;
+       our $cgi;
+
+       my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
+       if (defined $if_modified) {
+               my $since;
+               if (eval { require HTTP::Date; 1; }) {
+                       $since = HTTP::Date::str2time($if_modified);
+               } elsif (eval { require Time::ParseDate; 1; }) {
+                       $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
+               }
+               if (defined $since && $latest_epoch <= $since) {
+                       my %latest_date = parse_date($latest_epoch);
+                       print $cgi->header(
+                               -last_modified => $latest_date{'rfc2822'},
+                               -status => '304 Not Modified');
+                       goto DONE_GITWEB;
+               }
+       }
+}
+
+sub git_snapshot {
+       my $format = $input_params{'snapshot_format'};
+       if (!@snapshot_fmts) {
+               die_error(403, "Snapshots not allowed");
+       }
+       # default to first supported snapshot format
+       $format ||= $snapshot_fmts[0];
+       if ($format !~ m/^[a-z0-9]+$/) {
+               die_error(400, "Invalid snapshot format parameter");
+       } elsif (!exists($known_snapshot_formats{$format})) {
+               die_error(400, "Unknown snapshot format");
+       } elsif ($known_snapshot_formats{$format}{'disabled'}) {
+               die_error(403, "Snapshot format not allowed");
+       } elsif (!grep($_ eq $format, @snapshot_fmts)) {
+               die_error(403, "Unsupported snapshot format");
+       }
+
+       my $type = git_get_type("$hash^{}");
+       if (!$type) {
+               die_error(404, 'Object does not exist');
+       }  elsif ($type eq 'blob') {
+               die_error(400, 'Object is not a tree-ish');
+       }
+
+       my ($name, $prefix) = snapshot_name($project, $hash);
+       my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
+
+       my %co = parse_commit($hash);
+       exit_if_unmodified_since($co{'committer_epoch'}) if %co;
+
+       my $cmd = quote_command(
+               git_cmd(), 'archive',
+               "--format=$known_snapshot_formats{$format}{'format'}",
+               "--prefix=$prefix/", $hash);
+       if (exists $known_snapshot_formats{$format}{'compressor'}) {
+               $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
+       }
+
+       $filename =~ s/(["\\])/\\$1/g;
+       my %latest_date;
+       if (%co) {
+               %latest_date = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
+       }
+
+       print $cgi->header(
+               -type => $known_snapshot_formats{$format}{'type'},
+               -content_disposition => 'inline; filename="' . $filename . '"',
+               %co ? (-last_modified => $latest_date{'rfc2822'}) : (),
+               -status => '200 OK');
+
+       open my $fd, "-|", $cmd
+               or die_error(500, "Execute git-archive failed");
+       local *FCGI::Stream::PRINT = $FCGI_Stream_PRINT_raw;
+       binmode STDOUT, ':raw';
+       print <$fd>;
+       binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
+       close $fd;
+}
+
+sub git_log_generic {
+       my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
+
+       my $head = git_get_head_hash($project);
+       if (!defined $base) {
+               $base = $head;
+       }
+       if (!defined $page) {
+               $page = 0;
+       }
+       my $refs = git_get_references();
+
+       my $commit_hash = $base;
+       if (defined $parent) {
+               $commit_hash = "$parent..$base";
+       }
+       my @commitlist =
+               parse_commits($commit_hash, 101, (100 * $page),
+                             defined $file_name ? ($file_name, "--full-history") : ());
+
+       my $ftype;
+       if (!defined $file_hash && defined $file_name) {
+               # some commits could have deleted file in question,
+               # and not have it in tree, but one of them has to have it
+               for (my $i = 0; $i < @commitlist; $i++) {
+                       $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
+                       last if defined $file_hash;
+               }
+       }
+       if (defined $file_hash) {
+               $ftype = git_get_type($file_hash);
+       }
+       if (defined $file_name && !defined $ftype) {
+               die_error(500, "Unknown type of object");
+       }
+       my %co;
+       if (defined $file_name) {
+               %co = parse_commit($base)
+                       or die_error(404, "Unknown commit object");
+       }
+
+
+       my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
+       my $next_link = '';
+       if ($#commitlist >= 100) {
+               $next_link =
+                       $cgi->a({-href => href(-replay=>1, page=>$page+1),
+                                -accesskey => "n", -title => "Alt-n"}, "next");
+       }
+       my $patch_max = gitweb_get_feature('patches');
+       if ($patch_max && !defined $file_name &&
+               !gitweb_check_feature('email-privacy')) {
+               if ($patch_max < 0 || @commitlist <= $patch_max) {
+                       $paging_nav .= " &sdot; " .
+                               $cgi->a({-href => href(action=>"patches", -replay=>1)},
+                                       "patches");
+               }
+       }
+
+       git_header_html();
+       git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
+       if (defined $file_name) {
+               git_print_header_div('commit', esc_html($co{'title'}), $base);
+       } else {
+               git_print_header_div('summary', $project)
+       }
+       git_print_page_path($file_name, $ftype, $hash_base)
+               if (defined $file_name);
+
+       $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
+                    $file_name, $file_hash, $ftype);
+
+       git_footer_html();
+}
+
+sub git_log {
+       git_log_generic('log', \&git_log_body,
+                       $hash, $hash_parent);
+}
+
+sub git_commit {
+       $hash ||= $hash_base || "HEAD";
+       my %co = parse_commit($hash)
+           or die_error(404, "Unknown commit object");
+
+       my $parent  = $co{'parent'};
+       my $parents = $co{'parents'}; # listref
+
+       # we need to prepare $formats_nav before any parameter munging
+       my $formats_nav;
+       if (!defined $parent) {
+               # --root commitdiff
+               $formats_nav .= '(initial)';
+       } elsif (@$parents == 1) {
+               # single parent commit
+               $formats_nav .=
+                       '(parent: ' .
+                       $cgi->a({-href => href(action=>"commit",
+                                              hash=>$parent)},
+                               esc_html(substr($parent, 0, 7))) .
+                       ')';
+       } else {
+               # merge commit
+               $formats_nav .=
+                       '(merge: ' .
+                       join(' ', map {
+                               $cgi->a({-href => href(action=>"commit",
+                                                      hash=>$_)},
+                                       esc_html(substr($_, 0, 7)));
+                       } @$parents ) .
+                       ')';
+       }
+       if (gitweb_check_feature('patches') && @$parents <= 1 &&
+               !gitweb_check_feature('email-privacy')) {
+               $formats_nav .= " | " .
+                       $cgi->a({-href => href(action=>"patch", -replay=>1)},
+                               "patch");
+       }
+
+       if (!defined $parent) {
+               $parent = "--root";
+       }
+       my @difftree;
+       open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
+               @diff_opts,
+               (@$parents <= 1 ? $parent : '-c'),
+               $hash, "--"
+               or die_error(500, "Open git-diff-tree failed");
+       @difftree = map { chomp; $_ } <$fd>;
+       close $fd or die_error(404, "Reading git-diff-tree failed");
+
+       # non-textual hash id's can be cached
+       my $expires;
+       if ($hash =~ m/^$oid_regex$/) {
+               $expires = "+1d";
+       }
+       my $refs = git_get_references();
+       my $ref = format_ref_marker($refs, $co{'id'});
+
+       git_header_html(undef, $expires);
+       git_print_page_nav('commit', '',
+                          $hash, $co{'tree'}, $hash,
+                          $formats_nav);
+
+       if (defined $co{'parent'}) {
+               git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
+       } else {
+               git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
+       }
+       print "<div class=\"title_text\">\n" .
+             "<table class=\"object_header\">\n";
+       git_print_authorship_rows(\%co);
+       print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
+       print "<tr>" .
+             "<td>tree</td>" .
+             "<td class=\"sha1\">" .
+             $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
+                      class => "list"}, $co{'tree'}) .
+             "</td>" .
+             "<td class=\"link\">" .
+             $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
+                     "tree");
+       my $snapshot_links = format_snapshot_links($hash);
+       if (defined $snapshot_links) {
+               print " | " . $snapshot_links;
+       }
+       print "</td>" .
+             "</tr>\n";
+
+       foreach my $par (@$parents) {
+               print "<tr>" .
+                     "<td>parent</td>" .
+                     "<td class=\"sha1\">" .
+                     $cgi->a({-href => href(action=>"commit", hash=>$par),
+                              class => "list"}, $par) .
+                     "</td>" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
+                     " | " .
+                     $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
+                     "</td>" .
+                     "</tr>\n";
+       }
+       print "</table>".
+             "</div>\n";
+
+       print "<div class=\"page_body\">\n";
+       git_print_log($co{'comment'});
+       print "</div>\n";
+
+       git_difftree_body(\@difftree, $hash, @$parents);
+
+       git_footer_html();
+}
+
+sub git_object {
+       # object is defined by:
+       # - hash or hash_base alone
+       # - hash_base and file_name
+       my $type;
+
+       # - hash or hash_base alone
+       if ($hash || ($hash_base && !defined $file_name)) {
+               my $object_id = $hash || $hash_base;
+
+               open my $fd, "-|", quote_command(
+                       git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
+                       or die_error(404, "Object does not exist");
+               $type = <$fd>;
+               defined $type && chomp $type;
+               close $fd
+                       or die_error(404, "Object does not exist");
+
+       # - hash_base and file_name
+       } elsif ($hash_base && defined $file_name) {
+               $file_name =~ s,/+$,,;
+
+               system(git_cmd(), "cat-file", '-e', $hash_base) == 0
+                       or die_error(404, "Base object does not exist");
+
+               # here errors should not happen
+               open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
+                       or die_error(500, "Open git-ls-tree failed");
+               my $line = <$fd>;
+               close $fd;
+
+               #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
+               unless ($line && $line =~ m/^([0-9]+) (.+) ($oid_regex)\t/) {
+                       die_error(404, "File or directory for given base does not exist");
+               }
+               $type = $2;
+               $hash = $3;
+       } else {
+               die_error(400, "Not enough information to find object");
+       }
+
+       print $cgi->redirect(-uri => href(action=>$type, -full=>1,
+                                         hash=>$hash, hash_base=>$hash_base,
+                                         file_name=>$file_name),
+                            -status => '302 Found');
+}
+
+sub git_blobdiff {
+       my $format = shift || 'html';
+       my $diff_style = $input_params{'diff_style'} || 'inline';
+
+       my $fd;
+       my @difftree;
+       my %diffinfo;
+       my $expires;
+
+       # preparing $fd and %diffinfo for git_patchset_body
+       # new style URI
+       if (defined $hash_base && defined $hash_parent_base) {
+               if (defined $file_name) {
+                       # read raw output
+                       open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+                               $hash_parent_base, $hash_base,
+                               "--", (defined $file_parent ? $file_parent : ()), $file_name
+                               or die_error(500, "Open git-diff-tree failed");
+                       @difftree = map { chomp; $_ } <$fd>;
+                       close $fd
+                               or die_error(404, "Reading git-diff-tree failed");
+                       @difftree
+                               or die_error(404, "Blob diff not found");
+
+               } elsif (defined $hash &&
+                        $hash =~ $oid_regex) {
+                       # try to find filename from $hash
+
+                       # read filtered raw output
+                       open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+                               $hash_parent_base, $hash_base, "--"
+                               or die_error(500, "Open git-diff-tree failed");
+                       @difftree =
+                               # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
+                               # $hash == to_id
+                               grep { /^:[0-7]{6} [0-7]{6} $oid_regex $hash/ }
+                               map { chomp; $_ } <$fd>;
+                       close $fd
+                               or die_error(404, "Reading git-diff-tree failed");
+                       @difftree
+                               or die_error(404, "Blob diff not found");
+
+               } else {
+                       die_error(400, "Missing one of the blob diff parameters");
+               }
+
+               if (@difftree > 1) {
+                       die_error(400, "Ambiguous blob diff specification");
+               }
+
+               %diffinfo = parse_difftree_raw_line($difftree[0]);
+               $file_parent ||= $diffinfo{'from_file'} || $file_name;
+               $file_name   ||= $diffinfo{'to_file'};
+
+               $hash_parent ||= $diffinfo{'from_id'};
+               $hash        ||= $diffinfo{'to_id'};
+
+               # non-textual hash id's can be cached
+               if ($hash_base =~ m/^$oid_regex$/ &&
+                   $hash_parent_base =~ m/^$oid_regex$/) {
+                       $expires = '+1d';
+               }
+
+               # open patch output
+               open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+                       '-p', ($format eq 'html' ? "--full-index" : ()),
+                       $hash_parent_base, $hash_base,
+                       "--", (defined $file_parent ? $file_parent : ()), $file_name
+                       or die_error(500, "Open git-diff-tree failed");
+       }
+
+       # old/legacy style URI -- not generated anymore since 1.4.3.
+       if (!%diffinfo) {
+               die_error('404 Not Found', "Missing one of the blob diff parameters")
+       }
+
+       # header
+       if ($format eq 'html') {
+               my $formats_nav =
+                       $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
+                               "raw");
+               $formats_nav .= diff_style_nav($diff_style);
+               git_header_html(undef, $expires);
+               if (defined $hash_base && (my %co = parse_commit($hash_base))) {
+                       git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+                       git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
+               } else {
+                       print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
+                       print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
+               }
+               if (defined $file_name) {
+                       git_print_page_path($file_name, "blob", $hash_base);
+               } else {
+                       print "<div class=\"page_path\"></div>\n";
+               }
+
+       } elsif ($format eq 'plain') {
+               print $cgi->header(
+                       -type => 'text/plain',
+                       -charset => 'utf-8',
+                       -expires => $expires,
+                       -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
+
+               print "X-Git-Url: " . $cgi->self_url() . "\n\n";
+
+       } else {
+               die_error(400, "Unknown blobdiff format");
+       }
+
+       # patch
+       if ($format eq 'html') {
+               print "<div class=\"page_body\">\n";
+
+               git_patchset_body($fd, $diff_style,
+                                 [ \%diffinfo ], $hash_base, $hash_parent_base);
+               close $fd;
+
+               print "</div>\n"; # class="page_body"
+               git_footer_html();
+
+       } else {
+               while (my $line = <$fd>) {
+                       $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
+                       $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
+
+                       print $line;
+
+                       last if $line =~ m!^\+\+\+!;
+               }
+               local $/ = undef;
+               print <$fd>;
+               close $fd;
+       }
+}
+
+sub git_blobdiff_plain {
+       git_blobdiff('plain');
+}
+
+# assumes that it is added as later part of already existing navigation,
+# so it returns "| foo | bar" rather than just "foo | bar"
+sub diff_style_nav {
+       my ($diff_style, $is_combined) = @_;
+       $diff_style ||= 'inline';
+
+       return "" if ($is_combined);
+
+       my @styles = (inline => 'inline', 'sidebyside' => 'side by side');
+       my %styles = @styles;
+       @styles =
+               @styles[ map { $_ * 2 } 0..$#styles/2 ];
+
+       return join '',
+               map { " | ".$_ }
+               map {
+                       $_ eq $diff_style ? $styles{$_} :
+                       $cgi->a({-href => href(-replay=>1, diff_style => $_)}, $styles{$_})
+               } @styles;
+}
+
+sub git_commitdiff {
+       my %params = @_;
+       my $format = $params{-format} || 'html';
+       my $diff_style = $input_params{'diff_style'} || 'inline';
+
+       my ($patch_max) = gitweb_get_feature('patches');
+       if ($format eq 'patch') {
+               die_error(403, "Patch view not allowed") unless $patch_max;
+       }
+
+       $hash ||= $hash_base || "HEAD";
+       my %co = parse_commit($hash)
+           or die_error(404, "Unknown commit object");
+
+       # choose format for commitdiff for merge
+       if (! defined $hash_parent && @{$co{'parents'}} > 1) {
+               $hash_parent = '--cc';
+       }
+       # we need to prepare $formats_nav before almost any parameter munging
+       my $formats_nav;
+       if ($format eq 'html') {
+               $formats_nav =
+                       $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
+                               "raw");
+               if ($patch_max && @{$co{'parents'}} <= 1 &&
+                       !gitweb_check_feature('email-privacy')) {
+                       $formats_nav .= " | " .
+                               $cgi->a({-href => href(action=>"patch", -replay=>1)},
+                                       "patch");
+               }
+               $formats_nav .= diff_style_nav($diff_style, @{$co{'parents'}} > 1);
+
+               if (defined $hash_parent &&
+                   $hash_parent ne '-c' && $hash_parent ne '--cc') {
+                       # commitdiff with two commits given
+                       my $hash_parent_short = $hash_parent;
+                       if ($hash_parent =~ m/^$oid_regex$/) {
+                               $hash_parent_short = substr($hash_parent, 0, 7);
+                       }
+                       $formats_nav .=
+                               ' (from';
+                       for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
+                               if ($co{'parents'}[$i] eq $hash_parent) {
+                                       $formats_nav .= ' parent ' . ($i+1);
+                                       last;
+                               }
+                       }
+                       $formats_nav .= ': ' .
+                               $cgi->a({-href => href(-replay=>1,
+                                                      hash=>$hash_parent, hash_base=>undef)},
+                                       esc_html($hash_parent_short)) .
+                               ')';
+               } elsif (!$co{'parent'}) {
+                       # --root commitdiff
+                       $formats_nav .= ' (initial)';
+               } elsif (scalar @{$co{'parents'}} == 1) {
+                       # single parent commit
+                       $formats_nav .=
+                               ' (parent: ' .
+                               $cgi->a({-href => href(-replay=>1,
+                                                      hash=>$co{'parent'}, hash_base=>undef)},
+                                       esc_html(substr($co{'parent'}, 0, 7))) .
+                               ')';
+               } else {
+                       # merge commit
+                       if ($hash_parent eq '--cc') {
+                               $formats_nav .= ' | ' .
+                                       $cgi->a({-href => href(-replay=>1,
+                                                              hash=>$hash, hash_parent=>'-c')},
+                                               'combined');
+                       } else { # $hash_parent eq '-c'
+                               $formats_nav .= ' | ' .
+                                       $cgi->a({-href => href(-replay=>1,
+                                                              hash=>$hash, hash_parent=>'--cc')},
+                                               'compact');
+                       }
+                       $formats_nav .=
+                               ' (merge: ' .
+                               join(' ', map {
+                                       $cgi->a({-href => href(-replay=>1,
+                                                              hash=>$_, hash_base=>undef)},
+                                               esc_html(substr($_, 0, 7)));
+                               } @{$co{'parents'}} ) .
+                               ')';
+               }
+       }
+
+       my $hash_parent_param = $hash_parent;
+       if (!defined $hash_parent_param) {
+               # --cc for multiple parents, --root for parentless
+               $hash_parent_param =
+                       @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
+       }
+
+       # read commitdiff
+       my $fd;
+       my @difftree;
+       if ($format eq 'html') {
+               open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+                       "--no-commit-id", "--patch-with-raw", "--full-index",
+                       $hash_parent_param, $hash, "--"
+                       or die_error(500, "Open git-diff-tree failed");
+
+               while (my $line = <$fd>) {
+                       chomp $line;
+                       # empty line ends raw part of diff-tree output
+                       last unless $line;
+                       push @difftree, scalar parse_difftree_raw_line($line);
+               }
+
+       } elsif ($format eq 'plain') {
+               open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+                       '-p', $hash_parent_param, $hash, "--"
+                       or die_error(500, "Open git-diff-tree failed");
+       } elsif ($format eq 'patch') {
+               # For commit ranges, we limit the output to the number of
+               # patches specified in the 'patches' feature.
+               # For single commits, we limit the output to a single patch,
+               # diverging from the git-format-patch default.
+               my @commit_spec = ();
+               if ($hash_parent) {
+                       if ($patch_max > 0) {
+                               push @commit_spec, "-$patch_max";
+                       }
+                       push @commit_spec, '-n', "$hash_parent..$hash";
+               } else {
+                       if ($params{-single}) {
+                               push @commit_spec, '-1';
+                       } else {
+                               if ($patch_max > 0) {
+                                       push @commit_spec, "-$patch_max";
+                               }
+                               push @commit_spec, "-n";
+                       }
+                       push @commit_spec, '--root', $hash;
+               }
+               open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
+                       '--encoding=utf8', '--stdout', @commit_spec
+                       or die_error(500, "Open git-format-patch failed");
+       } else {
+               die_error(400, "Unknown commitdiff format");
+       }
+
+       # non-textual hash id's can be cached
+       my $expires;
+       if ($hash =~ m/^$oid_regex$/) {
+               $expires = "+1d";
+       }
+
+       # write commit message
+       if ($format eq 'html') {
+               my $refs = git_get_references();
+               my $ref = format_ref_marker($refs, $co{'id'});
+
+               git_header_html(undef, $expires);
+               git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
+               git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
+               print "<div class=\"title_text\">\n" .
+                     "<table class=\"object_header\">\n";
+               git_print_authorship_rows(\%co);
+               print "</table>".
+                     "</div>\n";
+               print "<div class=\"page_body\">\n";
+               if (@{$co{'comment'}} > 1) {
+                       print "<div class=\"log\">\n";
+                       git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
+                       print "</div>\n"; # class="log"
+               }
+
+       } elsif ($format eq 'plain') {
+               my $refs = git_get_references("tags");
+               my $tagname = git_get_rev_name_tags($hash);
+               my $filename = basename($project) . "-$hash.patch";
+
+               print $cgi->header(
+                       -type => 'text/plain',
+                       -charset => 'utf-8',
+                       -expires => $expires,
+                       -content_disposition => 'inline; filename="' . "$filename" . '"');
+               my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
+               print "From: " . to_utf8($co{'author'}) . "\n";
+               print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
+               print "Subject: " . to_utf8($co{'title'}) . "\n";
+
+               print "X-Git-Tag: $tagname\n" if $tagname;
+               print "X-Git-Url: " . $cgi->self_url() . "\n\n";
+
+               foreach my $line (@{$co{'comment'}}) {
+                       print to_utf8($line) . "\n";
+               }
+               print "---\n\n";
+       } elsif ($format eq 'patch') {
+               my $filename = basename($project) . "-$hash.patch";
+
+               print $cgi->header(
+                       -type => 'text/plain',
+                       -charset => 'utf-8',
+                       -expires => $expires,
+                       -content_disposition => 'inline; filename="' . "$filename" . '"');
+       }
+
+       # write patch
+       if ($format eq 'html') {
+               my $use_parents = !defined $hash_parent ||
+                       $hash_parent eq '-c' || $hash_parent eq '--cc';
+               git_difftree_body(\@difftree, $hash,
+                                 $use_parents ? @{$co{'parents'}} : $hash_parent);
+               print "<br/>\n";
+
+               git_patchset_body($fd, $diff_style,
+                                 \@difftree, $hash,
+                                 $use_parents ? @{$co{'parents'}} : $hash_parent);
+               close $fd;
+               print "</div>\n"; # class="page_body"
+               git_footer_html();
+
+       } elsif ($format eq 'plain') {
+               local $/ = undef;
+               print <$fd>;
+               close $fd
+                       or print "Reading git-diff-tree failed\n";
+       } elsif ($format eq 'patch') {
+               local $/ = undef;
+               print <$fd>;
+               close $fd
+                       or print "Reading git-format-patch failed\n";
+       }
+}
+
+sub git_commitdiff_plain {
+       git_commitdiff(-format => 'plain');
+}
+
+# format-patch-style patches
+sub git_patch {
+       git_commitdiff(-format => 'patch', -single => 1);
+}
+
+sub git_patches {
+       git_commitdiff(-format => 'patch');
+}
+
+sub git_history {
+       git_log_generic('history', \&git_history_body,
+                       $hash_base, $hash_parent_base,
+                       $file_name, $hash);
+}
+
+sub git_search {
+       $searchtype ||= 'commit';
+
+       # check if appropriate features are enabled
+       gitweb_check_feature('search')
+               or die_error(403, "Search is disabled");
+       if ($searchtype eq 'pickaxe') {
+               # pickaxe may take all resources of your box and run for several minutes
+               # with every query - so decide by yourself how public you make this feature
+               gitweb_check_feature('pickaxe')
+                       or die_error(403, "Pickaxe search is disabled");
+       }
+       if ($searchtype eq 'grep') {
+               # grep search might be potentially CPU-intensive, too
+               gitweb_check_feature('grep')
+                       or die_error(403, "Grep search is disabled");
+       }
+
+       if (!defined $searchtext) {
+               die_error(400, "Text field is empty");
+       }
+       if (!defined $hash) {
+               $hash = git_get_head_hash($project);
+       }
+       my %co = parse_commit($hash);
+       if (!%co) {
+               die_error(404, "Unknown commit object");
+       }
+       if (!defined $page) {
+               $page = 0;
+       }
+
+       if ($searchtype eq 'commit' ||
+           $searchtype eq 'author' ||
+           $searchtype eq 'committer') {
+               git_search_message(%co);
+       } elsif ($searchtype eq 'pickaxe') {
+               git_search_changes(%co);
+       } elsif ($searchtype eq 'grep') {
+               git_search_files(%co);
+       } else {
+               die_error(400, "Unknown search type");
+       }
+}
+
+sub git_search_help {
+       git_header_html();
+       git_print_page_nav('','', $hash,$hash,$hash);
+       print <<EOT;
+<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
+regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
+the pattern entered is recognized as the POSIX extended
+<a href="https://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
+insensitive).</p>
+<dl>
+<dt><b>commit</b></dt>
+<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
+EOT
+       my $have_grep = gitweb_check_feature('grep');
+       if ($have_grep) {
+               print <<EOT;
+<dt><b>grep</b></dt>
+<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
+    a different one) are searched for the given pattern. On large trees, this search can take
+a while and put some strain on the server, so please use it with some consideration. Note that
+due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
+case-sensitive.</dd>
+EOT
+       }
+       print <<EOT;
+<dt><b>author</b></dt>
+<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
+<dt><b>committer</b></dt>
+<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
+EOT
+       my $have_pickaxe = gitweb_check_feature('pickaxe');
+       if ($have_pickaxe) {
+               print <<EOT;
+<dt><b>pickaxe</b></dt>
+<dd>All commits that caused the string to appear or disappear from any file (changes that
+added, removed or "modified" the string) will be listed. This search can take a while and
+takes a lot of strain on the server, so please use it wisely. Note that since you may be
+interested even in changes just changing the case as well, this search is case sensitive.</dd>
+EOT
+       }
+       print "</dl>\n";
+       git_footer_html();
+}
+
+sub git_shortlog {
+       git_log_generic('shortlog', \&git_shortlog_body,
+                       $hash, $hash_parent);
+}
+
+## ......................................................................
+## feeds (RSS, Atom; OPML)
+
+sub git_feed {
+       my $format = shift || 'atom';
+       my $have_blame = gitweb_check_feature('blame');
+
+       # Atom: http://www.atomenabled.org/developers/syndication/
+       # RSS:  https://web.archive.org/web/20030729001534/http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
+       if ($format ne 'rss' && $format ne 'atom') {
+               die_error(400, "Unknown web feed format");
+       }
+
+       # log/feed of current (HEAD) branch, log of given branch, history of file/directory
+       my $head = $hash || 'HEAD';
+       my @commitlist = parse_commits($head, 150, 0, $file_name);
+
+       my %latest_commit;
+       my %latest_date;
+       my $content_type = "application/$format+xml";
+       if (defined $cgi->http('HTTP_ACCEPT') &&
+                $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
+               # browser (feed reader) prefers text/xml
+               $content_type = 'text/xml';
+       }
+       if (defined($commitlist[0])) {
+               %latest_commit = %{$commitlist[0]};
+               my $latest_epoch = $latest_commit{'committer_epoch'};
+               exit_if_unmodified_since($latest_epoch);
+               %latest_date = parse_date($latest_epoch, $latest_commit{'committer_tz'});
+       }
+       print $cgi->header(
+               -type => $content_type,
+               -charset => 'utf-8',
+               %latest_date ? (-last_modified => $latest_date{'rfc2822'}) : (),
+               -status => '200 OK');
+
+       # Optimization: skip generating the body if client asks only
+       # for Last-Modified date.
+       return if ($cgi->request_method() eq 'HEAD');
+
+       # header variables
+       my $title = "$site_name - $project/$action";
+       my $feed_type = 'log';
+       if (defined $hash) {
+               $title .= " - '$hash'";
+               $feed_type = 'branch log';
+               if (defined $file_name) {
+                       $title .= " :: $file_name";
+                       $feed_type = 'history';
+               }
+       } elsif (defined $file_name) {
+               $title .= " - $file_name";
+               $feed_type = 'history';
+       }
+       $title .= " $feed_type";
+       $title = esc_html($title);
+       my $descr = git_get_project_description($project);
+       if (defined $descr) {
+               $descr = esc_html($descr);
+       } else {
+               $descr = "$project " .
+                        ($format eq 'rss' ? 'RSS' : 'Atom') .
+                        " feed";
+       }
+       my $owner = git_get_project_owner($project);
+       $owner = esc_html($owner);
+
+       #header
+       my $alt_url;
+       if (defined $file_name) {
+               $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
+       } elsif (defined $hash) {
+               $alt_url = href(-full=>1, action=>"log", hash=>$hash);
+       } else {
+               $alt_url = href(-full=>1, action=>"summary");
+       }
+       $alt_url = esc_attr($alt_url);
+       print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
+       if ($format eq 'rss') {
+               print <<XML;
+<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
+<channel>
+XML
+               print "<title>$title</title>\n" .
+                     "<link>$alt_url</link>\n" .
+                     "<description>$descr</description>\n" .
+                     "<language>en</language>\n" .
+                     # project owner is responsible for 'editorial' content
+                     "<managingEditor>$owner</managingEditor>\n";
+               if (defined $logo || defined $favicon) {
+                       # prefer the logo to the favicon, since RSS
+                       # doesn't allow both
+                       my $img = esc_url($logo || $favicon);
+                       print "<image>\n" .
+                             "<url>$img</url>\n" .
+                             "<title>$title</title>\n" .
+                             "<link>$alt_url</link>\n" .
+                             "</image>\n";
+               }
+               if (%latest_date) {
+                       print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
+                       print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
+               }
+               print "<generator>gitweb v.$version/$git_version</generator>\n";
+       } elsif ($format eq 'atom') {
+               print <<XML;
+<feed xmlns="http://www.w3.org/2005/Atom">
+XML
+               print "<title>$title</title>\n" .
+                     "<subtitle>$descr</subtitle>\n" .
+                     '<link rel="alternate" type="text/html" href="' .
+                     $alt_url . '" />' . "\n" .
+                     '<link rel="self" type="' . $content_type . '" href="' .
+                     $cgi->self_url() . '" />' . "\n" .
+                     "<id>" . esc_url(href(-full=>1)) . "</id>\n" .
+                     # use project owner for feed author
+                     "<author><name>$owner</name></author>\n";
+               if (defined $favicon) {
+                       print "<icon>" . esc_url($favicon) . "</icon>\n";
+               }
+               if (defined $logo) {
+                       # not twice as wide as tall: 72 x 27 pixels
+                       print "<logo>" . esc_url($logo) . "</logo>\n";
+               }
+               if (! %latest_date) {
+                       # dummy date to keep the feed valid until commits trickle in:
+                       print "<updated>1970-01-01T00:00:00Z</updated>\n";
+               } else {
+                       print "<updated>$latest_date{'iso-8601'}</updated>\n";
+               }
+               print "<generator version='$version/$git_version'>gitweb</generator>\n";
+       }
+
+       # contents
+       for (my $i = 0; $i <= $#commitlist; $i++) {
+               my %co = %{$commitlist[$i]};
+               my $commit = $co{'id'};
+               # we read 150, we always show 30 and the ones more recent than 48 hours
+               if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
+                       last;
+               }
+               my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
+
+               # get list of changed files
+               open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+                       $co{'parent'} || "--root",
+                       $co{'id'}, "--", (defined $file_name ? $file_name : ())
+                       or next;
+               my @difftree = map { chomp; $_ } <$fd>;
+               close $fd
+                       or next;
+
+               # print element (entry, item)
+               my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
+               if ($format eq 'rss') {
+                       print "<item>\n" .
+                             "<title>" . esc_html($co{'title'}) . "</title>\n" .
+                             "<author>" . esc_html($co{'author'}) . "</author>\n" .
+                             "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
+                             "<guid isPermaLink=\"true\">$co_url</guid>\n" .
+                             "<link>" . esc_html($co_url) . "</link>\n" .
+                             "<description>" . esc_html($co{'title'}) . "</description>\n" .
+                             "<content:encoded>" .
+                             "<![CDATA[\n";
+               } elsif ($format eq 'atom') {
+                       print "<entry>\n" .
+                             "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
+                             "<updated>$cd{'iso-8601'}</updated>\n" .
+                             "<author>\n" .
+                             "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
+                       if ($co{'author_email'}) {
+                               print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
+                       }
+                       print "</author>\n" .
+                             # use committer for contributor
+                             "<contributor>\n" .
+                             "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
+                       if ($co{'committer_email'}) {
+                               print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
+                       }
+                       print "</contributor>\n" .
+                             "<published>$cd{'iso-8601'}</published>\n" .
+                             "<link rel=\"alternate\" type=\"text/html\" href=\"" . esc_attr($co_url) . "\" />\n" .
+                             "<id>" . esc_html($co_url) . "</id>\n" .
+                             "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
+                             "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
+               }
+               my $comment = $co{'comment'};
+               print "<pre>\n";
+               foreach my $line (@$comment) {
+                       $line = esc_html($line);
+                       print "$line\n";
+               }
+               print "</pre><ul>\n";
+               foreach my $difftree_line (@difftree) {
+                       my %difftree = parse_difftree_raw_line($difftree_line);
+                       next if !$difftree{'from_id'};
+
+                       my $file = $difftree{'file'} || $difftree{'to_file'};
+
+                       print "<li>" .
+                             "[" .
+                             $cgi->a({-href => href(-full=>1, action=>"blobdiff",
+                                                    hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
+                                                    hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
+                                                    file_name=>$file, file_parent=>$difftree{'from_file'}),
+                                     -title => "diff"}, 'D');
+                       if ($have_blame) {
+                               print $cgi->a({-href => href(-full=>1, action=>"blame",
+                                                            file_name=>$file, hash_base=>$commit),
+                                             -title => "blame"}, 'B');
+                       }
+                       # if this is not a feed of a file history
+                       if (!defined $file_name || $file_name ne $file) {
+                               print $cgi->a({-href => href(-full=>1, action=>"history",
+                                                            file_name=>$file, hash=>$commit),
+                                             -title => "history"}, 'H');
+                       }
+                       $file = esc_path($file);
+                       print "] ".
+                             "$file</li>\n";
+               }
+               if ($format eq 'rss') {
+                       print "</ul>]]>\n" .
+                             "</content:encoded>\n" .
+                             "</item>\n";
+               } elsif ($format eq 'atom') {
+                       print "</ul>\n</div>\n" .
+                             "</content>\n" .
+                             "</entry>\n";
+               }
+       }
+
+       # end of feed
+       if ($format eq 'rss') {
+               print "</channel>\n</rss>\n";
+       } elsif ($format eq 'atom') {
+               print "</feed>\n";
+       }
+}
+
+sub git_rss {
+       git_feed('rss');
+}
+
+sub git_atom {
+       git_feed('atom');
+}
+
+sub git_opml {
+       my @list = git_get_projects_list($project_filter, $strict_export);
+       if (!@list) {
+               die_error(404, "No projects found");
+       }
+
+       print $cgi->header(
+               -type => 'text/xml',
+               -charset => 'utf-8',
+               -content_disposition => 'inline; filename="opml.xml"');
+
+       my $title = esc_html($site_name);
+       my $filter = " within subdirectory ";
+       if (defined $project_filter) {
+               $filter .= esc_html($project_filter);
+       } else {
+               $filter = "";
+       }
+       print <<XML;
+<?xml version="1.0" encoding="utf-8"?>
+<opml version="1.0">
+<head>
+  <title>$title OPML Export$filter</title>
+</head>
+<body>
+<outline text="git RSS feeds">
+XML
+
+       foreach my $pr (@list) {
+               my %proj = %$pr;
+               my $head = git_get_head_hash($proj{'path'});
+               if (!defined $head) {
+                       next;
+               }
+               $git_dir = "$projectroot/$proj{'path'}";
+               my %co = parse_commit($head);
+               if (!%co) {
+                       next;
+               }
+
+               my $path = esc_html(chop_str($proj{'path'}, 25, 5));
+               my $rss  = esc_attr(href('project' => $proj{'path'}, 'action' => 'rss', -full => 1));
+               my $html = esc_attr(href('project' => $proj{'path'}, 'action' => 'summary', -full => 1));
+               print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
+       }
+       print <<XML;
+</outline>
+</body>
+</opml>
+XML
+}
diff --git a/gitweb/meson.build b/gitweb/meson.build
new file mode 100644 (file)
index 0000000..88a54b4
--- /dev/null
@@ -0,0 +1,89 @@
+gitweb_config = configuration_data()
+gitweb_config.set_quoted('PERL_PATH', target_perl.full_path())
+gitweb_config.set_quoted('CSSMIN', '')
+gitweb_config.set_quoted('JSMIN', '')
+gitweb_config.set_quoted('GIT_BINDIR', get_option('prefix') / get_option('bindir'))
+gitweb_config.set_quoted('GITWEB_CONFIG', get_option('gitweb_config'))
+gitweb_config.set_quoted('GITWEB_CONFIG_SYSTEM', get_option('gitweb_config_system'))
+gitweb_config.set_quoted('GITWEB_CONFIG_COMMON', get_option('gitweb_config_common'))
+gitweb_config.set_quoted('GITWEB_HOME_LINK_STR', get_option('gitweb_home_link_str'))
+gitweb_config.set_quoted('GITWEB_SITENAME', get_option('gitweb_sitename'))
+gitweb_config.set_quoted('GITWEB_PROJECTROOT', get_option('gitweb_projectroot'))
+gitweb_config.set_quoted('GITWEB_PROJECT_MAXDEPTH', get_option('gitweb_project_maxdepth'))
+gitweb_config.set_quoted('GITWEB_EXPORT_OK', get_option('gitweb_export_ok'))
+gitweb_config.set_quoted('GITWEB_STRICT_EXPORT', get_option('gitweb_strict_export'))
+gitweb_config.set_quoted('GITWEB_BASE_URL', get_option('gitweb_base_url'))
+gitweb_config.set_quoted('GITWEB_LIST', get_option('gitweb_list'))
+gitweb_config.set_quoted('GITWEB_HOMETEXT', get_option('gitweb_hometext'))
+gitweb_config.set_quoted('GITWEB_CSS', get_option('gitweb_css'))
+gitweb_config.set_quoted('GITWEB_LOGO', get_option('gitweb_logo'))
+gitweb_config.set_quoted('GITWEB_FAVICON', get_option('gitweb_favicon'))
+gitweb_config.set_quoted('GITWEB_JS', get_option('gitweb_js'))
+gitweb_config.set_quoted('GITWEB_SITE_HTML_HEAD_STRING', get_option('gitweb_site_html_head_string'))
+gitweb_config.set_quoted('GITWEB_SITE_HEADER', get_option('gitweb_site_header'))
+gitweb_config.set_quoted('GITWEB_SITE_FOOTER', get_option('gitweb_site_footer'))
+gitweb_config.set_quoted('HIGHLIGHT_BIN', get_option('highlight_bin'))
+
+configure_file(
+  input: 'GITWEB-BUILD-OPTIONS.in',
+  output: 'GITWEB-BUILD-OPTIONS',
+  configuration: gitweb_config,
+)
+
+test_dependencies += custom_target(
+  input: 'gitweb.perl',
+  output: 'gitweb.cgi',
+  command: [
+    shell,
+    meson.current_source_dir() / 'generate-gitweb-cgi.sh',
+    meson.current_build_dir() / 'GITWEB-BUILD-OPTIONS',
+    git_version_file.full_path(),
+    '@INPUT@',
+    '@OUTPUT@',
+  ],
+  install: true,
+  install_dir: get_option('datadir') / 'gitweb',
+  depends: [git_version_file],
+)
+
+javascript_files = [
+  meson.current_source_dir() / 'static/js/adjust-timezone.js',
+  meson.current_source_dir() / 'static/js/blame_incremental.js',
+  meson.current_source_dir() / 'static/js/javascript-detection.js',
+  meson.current_source_dir() / 'static/js/lib/common-lib.js',
+  meson.current_source_dir() / 'static/js/lib/cookies.js',
+  meson.current_source_dir() / 'static/js/lib/datetime.js',
+]
+
+test_dependencies += custom_target(
+  input: javascript_files,
+  output: 'gitweb.js',
+  command: [
+    shell,
+    meson.current_source_dir() / 'generate-gitweb-js.sh',
+    '@OUTPUT@',
+  ] + javascript_files,
+  install: true,
+  install_dir: get_option('datadir') / 'gitweb/static',
+)
+
+foreach asset : [
+  'static/git-favicon.png',
+  'static/git-logo.png',
+  'static/gitweb.css',
+]
+  if meson.version().version_compare('>=1.3.0')
+    fs.copyfile(asset,
+      install: true,
+      install_dir: get_option('datadir') / 'gitweb' / fs.parent(asset),
+    )
+  else
+    configure_file(
+      input: asset,
+      output: fs.stem(asset),
+      copy: true,
+      install: true,
+      install_dir: get_option('datadir') / 'gitweb' / fs.parent(asset),
+    )
+  endif
+endforeach
diff --git a/gitweb/static/git-favicon.png b/gitweb/static/git-favicon.png
new file mode 100644 (file)
index 0000000..aae35a7
Binary files /dev/null and b/gitweb/static/git-favicon.png differ
diff --git a/gitweb/static/git-logo.png b/gitweb/static/git-logo.png
new file mode 100644 (file)
index 0000000..f4ede2e
Binary files /dev/null and b/gitweb/static/git-logo.png differ
diff --git a/gitweb/static/gitweb.css b/gitweb/static/gitweb.css
new file mode 100644 (file)
index 0000000..48d2e51
--- /dev/null
@@ -0,0 +1,686 @@
+body {
+       font-family: sans-serif;
+       font-size: small;
+       border: solid #d9d8d1;
+       border-width: 1px;
+       margin: 10px;
+       background-color: #ffffff;
+       color: #000000;
+}
+
+a {
+       color: #0000cc;
+}
+
+a:hover, a:visited, a:active {
+       color: #880000;
+}
+
+span.cntrl {
+       border: dashed #aaaaaa;
+       border-width: 1px;
+       padding: 0px 2px 0px 2px;
+       margin:  0px 2px 0px 2px;
+}
+
+img.logo {
+       float: right;
+       border-width: 0px;
+}
+
+img.avatar {
+       vertical-align: middle;
+}
+
+img.blob {
+       max-height: 100%;
+       max-width: 100%;
+}
+
+a.list img.avatar {
+       border-style: none;
+}
+
+div.page_header {
+       height: 25px;
+       padding: 8px;
+       font-size: 150%;
+       font-weight: bold;
+       background-color: #d9d8d1;
+}
+
+div.page_header a:visited, a.header {
+       color: #0000cc;
+}
+
+div.page_header a:hover {
+       color: #880000;
+}
+
+div.page_nav {
+       padding: 8px;
+}
+
+div.page_nav a:visited {
+       color: #0000cc;
+}
+
+div.page_path {
+       padding: 8px;
+       font-weight: bold;
+       border: solid #d9d8d1;
+       border-width: 0px 0px 1px;
+}
+
+div.page_footer {
+       height: 22px;
+       padding: 4px 8px;
+       background-color: #d9d8d1;
+}
+
+div.page_footer_text {
+       line-height: 22px;
+       float: left;
+       color: #555555;
+       font-style: italic;
+}
+
+div#generating_info {
+       margin: 4px;
+       font-size: smaller;
+       text-align: center;
+       color: #505050;
+}
+
+div.page_body {
+       padding: 8px;
+       font-family: monospace;
+}
+
+div.title, a.title {
+       display: block;
+       padding: 6px 8px;
+       font-weight: bold;
+       background-color: #edece6;
+       text-decoration: none;
+       color: #000000;
+}
+
+div.readme {
+       padding: 8px;
+}
+
+a.title:hover {
+       background-color: #d9d8d1;
+}
+
+div.title_text {
+       padding: 6px 0px;
+       border: solid #d9d8d1;
+       border-width: 0px 0px 1px;
+       font-family: monospace;
+}
+
+div.log_body {
+       padding: 8px 8px 8px 150px;
+}
+
+span.age {
+       position: relative;
+       float: left;
+       width: 142px;
+       font-style: italic;
+}
+
+span.signoff {
+       color: #888888;
+}
+
+div.log_link {
+       padding: 0px 8px;
+       font-size: 70%;
+       font-family: sans-serif;
+       font-style: normal;
+       position: relative;
+       float: left;
+       width: 136px;
+}
+
+div.list_head {
+       padding: 6px 8px 4px;
+       border: solid #d9d8d1;
+       border-width: 1px 0px 0px;
+       font-style: italic;
+}
+
+.author_date, .author {
+       font-style: italic;
+}
+
+div.author_date {
+       padding: 8px;
+       border: solid #d9d8d1;
+       border-width: 0px 0px 1px 0px;
+}
+
+a.list {
+       text-decoration: none;
+       color: #000000;
+}
+
+a.subject, a.name {
+       font-weight: bold;
+}
+
+table.tags a.subject {
+       font-weight: normal;
+}
+
+a.list:hover {
+       text-decoration: underline;
+       color: #880000;
+}
+
+a.text {
+       text-decoration: none;
+       color: #0000cc;
+}
+
+a.text:visited {
+       text-decoration: none;
+       color: #880000;
+}
+
+a.text:hover {
+       text-decoration: underline;
+       color: #880000;
+}
+
+table {
+       padding: 8px 4px;
+       border-spacing: 0;
+}
+
+table.diff_tree {
+       font-family: monospace;
+}
+
+table.combined.diff_tree th {
+       text-align: center;
+}
+
+table.combined.diff_tree td {
+       padding-right: 24px;
+}
+
+table.combined.diff_tree th.link,
+table.combined.diff_tree td.link {
+       padding: 0px 2px;
+}
+
+table.combined.diff_tree td.nochange a {
+       color: #6666ff;
+}
+
+table.combined.diff_tree td.nochange a:hover,
+table.combined.diff_tree td.nochange a:visited {
+       color: #d06666;
+}
+
+table.blame {
+       border-collapse: collapse;
+}
+
+table.blame td {
+       padding: 0px 5px;
+       font-size: 100%;
+       vertical-align: top;
+}
+
+th {
+       padding: 2px 5px;
+       font-size: 100%;
+       text-align: left;
+}
+
+/* do not change row style on hover for 'blame' view */
+tr.light,
+table.blame .light:hover {
+       background-color: #ffffff;
+}
+
+tr.dark,
+table.blame .dark:hover {
+       background-color: #f6f6f0;
+}
+
+/* currently both use the same, but it can change */
+tr.light:hover,
+tr.dark:hover {
+       background-color: #edece6;
+}
+
+/* boundary commits in 'blame' view */
+/* and commits without "previous" */
+tr.boundary td.sha1,
+tr.no-previous td.linenr {
+       font-weight: bold;
+}
+
+/* for 'blame_incremental', during processing */
+tr.color1 { background-color: #f6fff6; }
+tr.color2 { background-color: #f6f6ff; }
+tr.color3 { background-color: #fff6f6; }
+
+td {
+       padding: 2px 5px;
+       font-size: 100%;
+       vertical-align: top;
+}
+
+td.link, td.selflink {
+       padding: 2px 5px;
+       font-family: sans-serif;
+       font-size: 70%;
+}
+
+td.selflink {
+       padding-right: 0px;
+}
+
+td.sha1 {
+       font-family: monospace;
+}
+
+.error {
+       color: red;
+       background-color: yellow;
+}
+
+td.current_head {
+       text-decoration: underline;
+}
+
+td.category {
+       background-color: #d9d8d1;
+       border-top: 1px solid #000000;
+       border-left: 1px solid #000000;
+       font-weight: bold;
+}
+
+table.diff_tree span.file_status.new {
+       color: #008000;
+}
+
+table.diff_tree span.file_status.deleted {
+       color: #c00000;
+}
+
+table.diff_tree span.file_status.moved,
+table.diff_tree span.file_status.mode_chnge {
+       color: #777777;
+}
+
+table.diff_tree span.file_status.copied {
+  color: #70a070;
+}
+
+/* noage: "No commits" */
+table.project_list td.noage {
+       color: #808080;
+       font-style: italic;
+}
+
+/* age2: 60*60*24*2 <= age */
+table.project_list td.age2, table.blame td.age2 {
+       font-style: italic;
+}
+
+/* age1: 60*60*2 <= age < 60*60*24*2 */
+table.project_list td.age1 {
+       color: #009900;
+       font-style: italic;
+}
+
+table.blame td.age1 {
+       color: #009900;
+       background: transparent;
+}
+
+/* age0: age < 60*60*2 */
+table.project_list td.age0 {
+       color: #009900;
+       font-style: italic;
+       font-weight: bold;
+}
+
+table.blame td.age0 {
+       color: #009900;
+       background: transparent;
+       font-weight: bold;
+}
+
+td.pre, div.pre, div.diff {
+       font-family: monospace;
+       font-size: 12px;
+       white-space: pre;
+}
+
+td.mode {
+       font-family: monospace;
+}
+
+/* progress of blame_interactive */
+div#progress_bar {
+       height: 2px;
+       margin-bottom: -2px;
+       background-color: #d8d9d0;
+}
+div#progress_info {
+       float: right;
+       text-align: right;
+}
+
+/* format of (optional) objects size in 'tree' view */
+td.size {
+       font-family: monospace;
+       text-align: right;
+}
+
+/* styling of diffs (patchsets): commitdiff and blobdiff views */
+div.diff.header,
+div.diff.extended_header {
+       white-space: normal;
+}
+
+div.diff.header {
+       font-weight: bold;
+
+       background-color: #edece6;
+
+       margin-top: 4px;
+       padding: 4px 0px 2px 0px;
+       border: solid #d9d8d1;
+       border-width: 1px 0px 1px 0px;
+}
+
+div.diff.header a.path {
+       text-decoration: underline;
+}
+
+div.diff.extended_header,
+div.diff.extended_header a.path,
+div.diff.extended_header a.hash {
+       color: #777777;
+}
+
+div.diff.extended_header .info {
+       color: #b0b0b0;
+}
+
+div.diff.extended_header {
+       background-color: #f6f5ee;
+       padding: 2px 0px 2px 0px;
+}
+
+div.diff a.list,
+div.diff a.path,
+div.diff a.hash {
+       text-decoration: none;
+}
+
+div.diff a.list:hover,
+div.diff a.path:hover,
+div.diff a.hash:hover {
+       text-decoration: underline;
+}
+
+div.diff.to_file a.path,
+div.diff.to_file {
+       color: #007000;
+}
+
+div.diff.add {
+       color: #008800;
+}
+
+div.diff.add span.marked {
+       background-color: #aaffaa;
+}
+
+div.diff.from_file a.path,
+div.diff.from_file {
+       color: #aa0000;
+}
+
+div.diff.rem {
+       color: #cc0000;
+}
+
+div.diff.rem span.marked {
+       background-color: #ffaaaa;
+}
+
+div.diff.chunk_header a,
+div.diff.chunk_header {
+       color: #990099;
+}
+
+div.diff.chunk_header {
+       border: dotted #ffe0ff;
+       border-width: 1px 0px 0px 0px;
+       margin-top: 2px;
+}
+
+div.diff.chunk_header span.chunk_info {
+       background-color: #ffeeff;
+}
+
+div.diff.chunk_header span.section {
+       color: #aa22aa;
+}
+
+div.diff.incomplete {
+       color: #cccccc;
+}
+
+div.diff.nodifferences {
+       font-weight: bold;
+       color: #600000;
+}
+
+/* side-by-side diff */
+div.chunk_block {
+       overflow: hidden;
+}
+
+div.chunk_block div.old {
+       float: left;
+       width: 50%;
+       overflow: hidden;
+}
+
+div.chunk_block div.new {
+       margin-left: 50%;
+       width: 50%;
+}
+
+div.chunk_block.rem div.old div.diff.rem {
+       background-color: #fff5f5;
+}
+div.chunk_block.add div.new div.diff.add {
+       background-color: #f8fff8;
+}
+div.chunk_block.chg div     div.diff {
+       background-color: #fffff0;
+}
+div.chunk_block.ctx div     div.diff.ctx {
+       color: #404040;
+}
+
+
+div.index_include {
+       border: solid #d9d8d1;
+       border-width: 0px 0px 1px;
+       padding: 12px 8px;
+}
+
+div.search {
+       font-size: 100%;
+       font-weight: normal;
+       margin: 4px 8px;
+       float: right;
+       top: 56px;
+       right: 12px
+}
+
+div.projsearch {
+       text-align: center;
+       margin: 20px 0px;
+}
+
+div.projsearch form {
+       margin-bottom: 2px;
+}
+
+td.linenr {
+       text-align: right;
+}
+
+a.linenr {
+       color: #999999;
+       text-decoration: none
+}
+
+a.rss_logo {
+       float: right;
+       padding: 3px 5px;
+       line-height: 10px;
+       border: 1px solid;
+       border-color: #fcc7a5 #7d3302 #3e1a01 #ff954e;
+       color: #ffffff;
+       background-color: #ff6600;
+       font-weight: bold;
+       font-family: sans-serif;
+       font-size: 70%;
+       text-align: center;
+       text-decoration: none;
+}
+
+a.rss_logo:hover {
+       background-color: #ee5500;
+}
+
+a.rss_logo.generic {
+       background-color: #ff8800;
+}
+
+a.rss_logo.generic:hover {
+       background-color: #ee7700;
+}
+
+span.refs span {
+       padding: 0px 4px;
+       font-size: 70%;
+       font-weight: normal;
+       border: 1px solid;
+       background-color: #ffaaff;
+       border-color: #ffccff #ff00ee #ff00ee #ffccff;
+}
+
+span.refs span a {
+       text-decoration: none;
+       color: inherit;
+}
+
+span.refs span a:hover {
+       text-decoration: underline;
+}
+
+span.refs span.indirect {
+       font-style: italic;
+}
+
+span.refs span.ref {
+       background-color: #aaaaff;
+       border-color: #ccccff #0033cc #0033cc #ccccff;
+}
+
+span.refs span.tag {
+       background-color: #ffffaa;
+       border-color: #ffffcc #ffee00 #ffee00 #ffffcc;
+}
+
+span.refs span.head {
+       background-color: #aaffaa;
+       border-color: #ccffcc #00cc33 #00cc33 #ccffcc;
+}
+
+span.atnight {
+       color: #cc0000;
+}
+
+span.match {
+       color: #e00000;
+}
+
+div.binary {
+       font-style: italic;
+}
+
+div.remote {
+       margin: .5em;
+       border: 1px solid #d9d8d1;
+       display: inline-block;
+}
+
+/* JavaScript-based timezone manipulation */
+
+.popup { /* timezone selection UI */
+       position: absolute;
+       /* "top: 0; right: 0;" would be better, if not for bugs in browsers */
+       top: 0; left: 0;
+       border: 1px solid;
+       padding: 2px;
+       background-color: #f0f0f0;
+       font-style: normal;
+       color: #000000;
+       cursor: auto;
+}
+
+.close-button { /* close timezone selection UI without selecting */
+       /* float doesn't work within absolutely positioned container,
+        * if width of container is not set explicitly */
+       /* float: right; */
+       position: absolute;
+       top: 0px; right: 0px;
+       border:  1px solid green;
+       margin:  1px 1px 1px 1px;
+       padding-bottom: 2px;
+       width:     12px;
+       height:    10px;
+       font-size:  9px;
+       font-weight: bold;
+       text-align: center;
+       background-color: #fff0f0;
+       cursor: pointer;
+}
+
+
+/* Style definition generated by highlight 2.4.5, http://andre-simon.de/doku/highlight/en/highlight.php */
+
+/* Highlighting theme definition: */
+
+.num    { color:#2928ff; }
+.esc    { color:#ff00ff; }
+.str    { color:#ff0000; }
+.dstr   { color:#818100; }
+.slc    { color:#838183; font-style:italic; }
+.com    { color:#838183; font-style:italic; }
+.dir    { color:#008200; }
+.sym    { color:#000000; }
+.line   { color:#555555; }
+.kwa    { color:#000000; font-weight:bold; }
+.kwb    { color:#830000; }
+.kwc    { color:#000000; font-weight:bold; }
+.kwd    { color:#010181; }
diff --git a/gitweb/static/js/README b/gitweb/static/js/README
new file mode 100644 (file)
index 0000000..f8460ed
--- /dev/null
@@ -0,0 +1,20 @@
+GIT web interface (gitweb) - JavaScript
+=======================================
+
+This directory holds JavaScript code used by gitweb (GIT web interface).
+Scripts from there would be concatenated together in the order specified
+by gitweb/Makefile into gitweb/static/gitweb.js, during building of
+gitweb/gitweb.cgi (during gitweb building).  The resulting file (or its
+minification) would then be installed / deployed together with gitweb.
+
+Scripts in 'lib/' subdirectory compose generic JavaScript library,
+providing features required by gitweb but in no way limited to gitweb
+only.  In the future those scripts could be replaced by some JavaScript
+library / framework, like e.g. jQuery, YUI, Prototype, MooTools, Dojo,
+ExtJS, Script.aculo.us or SproutCore.
+
+All scripts that manipulate gitweb output should be put outside 'lib/',
+directly in this directory ('gitweb/static/js/').  Those scripts would
+have to be rewritten if gitweb moves to using some JavaScript library.
+
+See also comments in gitweb/Makefile.
diff --git a/gitweb/static/js/adjust-timezone.js b/gitweb/static/js/adjust-timezone.js
new file mode 100644 (file)
index 0000000..0c67779
--- /dev/null
@@ -0,0 +1,330 @@
+// Copyright (C) 2011, John 'Warthog9' Hawley <warthog9@eaglescrag.net>
+//               2011, Jakub Narebski <jnareb@gmail.com>
+
+/**
+ * @fileOverview Manipulate dates in gitweb output, adjusting timezone
+ * @license GPLv2 or later
+ */
+
+/**
+ * Get common timezone, add UI for changing timezones, and adjust
+ * dates to use requested common timezone.
+ *
+ * This function is called during onload event (added to window.onload).
+ *
+ * @param {String} tzDefault: default timezone, if there is no cookie
+ * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone
+ * @param {String} tzCookieInfo.name: name of cookie to store timezone
+ * @param {String} tzClassName: denotes elements with date to be adjusted
+ */
+function onloadTZSetup(tzDefault, tzCookieInfo, tzClassName) {
+       var tzCookieTZ = getCookie(tzCookieInfo.name, tzCookieInfo);
+       var tz = tzDefault;
+
+       if (tzCookieTZ) {
+               // set timezone to value saved in a cookie
+               tz = tzCookieTZ;
+               // refresh cookie, so its expiration counts from last use of gitweb
+               setCookie(tzCookieInfo.name, tzCookieTZ, tzCookieInfo);
+       }
+
+       // add UI for changing timezone
+       addChangeTZ(tz, tzCookieInfo, tzClassName);
+
+       // server-side of gitweb produces datetime in UTC,
+       // so if tz is 'utc' there is no need for changes
+       var nochange = tz === 'utc';
+
+       // adjust dates to use specified common timezone
+       fixDatetimeTZ(tz, tzClassName, nochange);
+}
+
+
+/* ...................................................................... */
+/* Changing dates to use requested timezone */
+
+/**
+ * Replace RFC-2822 dates contained in SPAN elements with tzClassName
+ * CSS class with equivalent dates in given timezone.
+ *
+ * @param {String} tz: numeric timezone in '(-|+)HHMM' format, or 'utc', or 'local'
+ * @param {String} tzClassName: specifies elements to be changed
+ * @param {Boolean} nochange: markup for timezone change, but don't change it
+ */
+function fixDatetimeTZ(tz, tzClassName, nochange) {
+       // sanity check, method should be ensured by common-lib.js
+       if (!document.getElementsByClassName) {
+               return;
+       }
+
+       // translate to timezone in '(-|+)HHMM' format
+       tz = normalizeTimezoneInfo(tz);
+
+       // NOTE: result of getElementsByClassName should probably be cached
+       var classesFound = document.getElementsByClassName(tzClassName, "span");
+       for (var i = 0, len = classesFound.length; i < len; i++) {
+               var curElement = classesFound[i];
+
+               curElement.title = 'Click to change timezone';
+               if (!nochange) {
+                       // we use *.firstChild.data (W3C DOM) instead of *.innerHTML
+                       // as the latter doesn't always work everywhere in every browser
+                       var epoch = parseRFC2822Date(curElement.firstChild.data);
+                       var adjusted = formatDateRFC2882(epoch, tz);
+
+                       curElement.firstChild.data = adjusted;
+               }
+       }
+}
+
+
+/* ...................................................................... */
+/* Adding triggers, generating timezone menu, displaying and hiding */
+
+/**
+ * Adds triggers for UI to change common timezone used for dates in
+ * gitweb output: it marks up and/or creates item to click to invoke
+ * timezone change UI, creates timezone UI fragment to be attached,
+ * and installs appropriate onclick trigger (via event delegation).
+ *
+ * @param {String} tzSelected: pre-selected timezone,
+ *                             'utc' or 'local' or '(-|+)HHMM'
+ * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone
+ * @param {String} tzClassName: specifies elements to install trigger
+ */
+function addChangeTZ(tzSelected, tzCookieInfo, tzClassName) {
+       // make link to timezone UI discoverable
+       addCssRule('.'+tzClassName + ':hover',
+                  'text-decoration: underline; cursor: help;');
+
+       // create form for selecting timezone (to be saved in a cookie)
+       var tzSelectFragment = document.createDocumentFragment();
+       tzSelectFragment = createChangeTZForm(tzSelectFragment,
+                                             tzSelected, tzCookieInfo, tzClassName);
+
+       // event delegation handler for timezone selection UI (clicking on entry)
+       // see http://www.nczonline.net/blog/2009/06/30/event-delegation-in-javascript/
+       // assumes that there is no existing document.onclick handler
+       document.onclick = function onclickHandler(event) {
+               //IE doesn't pass in the event object
+               event = event || window.event;
+
+               //IE uses srcElement as the target
+               var target = event.target || event.srcElement;
+
+               switch (target.className) {
+               case tzClassName:
+                       // don't display timezone menu if it is already displayed
+                       if (tzSelectFragment.childNodes.length > 0) {
+                               displayChangeTZForm(target, tzSelectFragment);
+                       }
+                       break;
+               } // end switch
+       };
+}
+
+/**
+ * Create DocumentFragment with UI for changing common timezone in
+ * which dates are shown in.
+ *
+ * @param {DocumentFragment} documentFragment: where attach UI
+ * @param {String} tzSelected: default (pre-selected) timezone
+ * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone
+ * @returns {DocumentFragment}
+ */
+function createChangeTZForm(documentFragment, tzSelected, tzCookieInfo, tzClassName) {
+       var div = document.createElement("div");
+       div.className = 'popup';
+
+       /* '<div class="close-button" title="(click on this box to close)">X</div>' */
+       var closeButton = document.createElement('div');
+       closeButton.className = 'close-button';
+       closeButton.title = '(click on this box to close)';
+       closeButton.appendChild(document.createTextNode('X'));
+       closeButton.onclick = closeTZFormHandler(documentFragment, tzClassName);
+       div.appendChild(closeButton);
+
+       /* 'Select timezone: <br clear="all">' */
+       div.appendChild(document.createTextNode('Select timezone: '));
+       var br = document.createElement('br');
+       br.clear = 'all';
+       div.appendChild(br);
+
+       /* '<select name="tzoffset">
+        *    ...
+        *    <option value="-0700">UTC-07:00</option>
+        *    <option value="-0600">UTC-06:00</option>
+        *    ...
+        *  </select>' */
+       var select = document.createElement("select");
+       select.name = "tzoffset";
+       //select.style.clear = 'all';
+       select.appendChild(generateTZOptions(tzSelected));
+       select.onchange = selectTZHandler(documentFragment, tzCookieInfo, tzClassName);
+       div.appendChild(select);
+
+       documentFragment.appendChild(div);
+
+       return documentFragment;
+}
+
+
+/**
+ * Hide (remove from DOM) timezone change UI, ensuring that it is not
+ * garbage collected and that it can be re-enabled later.
+ *
+ * @param {DocumentFragment} documentFragment: contains detached UI
+ * @param {HTMLSelectElement} target: select element inside of UI
+ * @param {String} tzClassName: specifies element where UI was installed
+ * @returns {DocumentFragment} documentFragment
+ */
+function removeChangeTZForm(documentFragment, target, tzClassName) {
+       // find containing element, where we appended timezone selection UI
+       // `target' is somewhere inside timezone menu
+       var container = target.parentNode, popup = target;
+       while (container &&
+              container.className !== tzClassName) {
+               popup = container;
+               container = container.parentNode;
+       }
+       // safety check if we found correct container,
+       // and if it isn't deleted already
+       if (!container || !popup ||
+           container.className !== tzClassName ||
+           popup.className     !== 'popup') {
+               return documentFragment;
+       }
+
+       // timezone selection UI was appended as last child
+       // see also displayChangeTZForm function
+       var removed = popup.parentNode.removeChild(popup);
+       if (documentFragment.firstChild !== removed) { // the only child
+               // re-append it so it would be available for next time
+               documentFragment.appendChild(removed);
+       }
+       // all of inline style was added by this script
+       // it is not really needed to remove it, but it is a good practice
+       container.removeAttribute('style');
+
+       return documentFragment;
+}
+
+
+/**
+ * Display UI for changing common timezone for dates in gitweb output.
+ * To be used from 'onclick' event handler.
+ *
+ * @param {HTMLElement} target: where to install/display UI
+ * @param {DocumentFragment} tzSelectFragment: timezone selection UI
+ */
+function displayChangeTZForm(target, tzSelectFragment) {
+       // for absolute positioning to be related to target element
+       target.style.position = 'relative';
+       target.style.display = 'inline-block';
+
+       // show/display UI for changing timezone
+       target.appendChild(tzSelectFragment);
+}
+
+
+/* ...................................................................... */
+/* List of timezones for timezone selection menu */
+
+/**
+ * Generate list of timezones for creating timezone select UI
+ *
+ * @returns {Object[]} list of e.g. { value: '+0100', descr: 'GMT+01:00' }
+ */
+function generateTZList() {
+       var timezones = [
+               { value: "utc",   descr: "UTC/GMT"},
+               { value: "local", descr: "Local (per browser)"}
+       ];
+
+       // generate all full hour timezones (no fractional timezones)
+       for (var x = -12, idx = timezones.length; x <= +14; x++, idx++) {
+               var hours = (x >= 0 ? '+' : '-') + padLeft(x >=0 ? x : -x, 2);
+               timezones[idx] = { value: hours + '00', descr: 'UTC' + hours + ':00'};
+               if (x === 0) {
+                       timezones[idx].descr = 'UTC\u00B100:00'; // 'UTC&plusmn;00:00'
+               }
+       }
+
+       return timezones;
+}
+
+/**
+ * Generate <options> elements for timezone select UI
+ *
+ * @param {String} tzSelected: default timezone
+ * @returns {DocumentFragment} list of options elements to appendChild
+ */
+function generateTZOptions(tzSelected) {
+       var elems = document.createDocumentFragment();
+       var timezones = generateTZList();
+
+       for (var i = 0, len = timezones.length; i < len; i++) {
+               var tzone = timezones[i];
+               var option = document.createElement("option");
+               if (tzone.value === tzSelected) {
+                       option.defaultSelected = true;
+               }
+               option.value = tzone.value;
+               option.appendChild(document.createTextNode(tzone.descr));
+
+               elems.appendChild(option);
+       }
+
+       return elems;
+}
+
+
+/* ...................................................................... */
+/* Event handlers and/or their generators */
+
+/**
+ * Create event handler that select timezone and closes timezone select UI.
+ * To be used as $('select[name="tzselect"]').onchange handler.
+ *
+ * @param {DocumentFragment} tzSelectFragment: timezone selection UI
+ * @param {Object} tzCookieInfo: object literal with info about cookie to store timezone
+ * @param {String} tzCookieInfo.name: name of cookie to save result of selection
+ * @param {String} tzClassName: specifies element where UI was installed
+ * @returns {Function} event handler
+ */
+function selectTZHandler(tzSelectFragment, tzCookieInfo, tzClassName) {
+       //return function selectTZ(event) {
+       return function (event) {
+               event = event || window.event;
+               var target = event.target || event.srcElement;
+
+               var selected = target.options.item(target.selectedIndex);
+               removeChangeTZForm(tzSelectFragment, target, tzClassName);
+
+               if (selected) {
+                       selected.defaultSelected = true;
+                       setCookie(tzCookieInfo.name, selected.value, tzCookieInfo);
+                       fixDatetimeTZ(selected.value, tzClassName);
+               }
+       };
+}
+
+/**
+ * Create event handler that closes timezone select UI.
+ * To be used e.g. as $('.closebutton').onclick handler.
+ *
+ * @param {DocumentFragment} tzSelectFragment: timezone selection UI
+ * @param {String} tzClassName: specifies element where UI was installed
+ * @returns {Function} event handler
+ */
+function closeTZFormHandler(tzSelectFragment, tzClassName) {
+       //return function closeTZForm(event) {
+       return function (event) {
+               event = event || window.event;
+               var target = event.target || event.srcElement;
+
+               removeChangeTZForm(tzSelectFragment, target, tzClassName);
+       };
+}
+
+/* end of adjust-timezone.js */
diff --git a/gitweb/static/js/blame_incremental.js b/gitweb/static/js/blame_incremental.js
new file mode 100644 (file)
index 0000000..e100d82
--- /dev/null
@@ -0,0 +1,692 @@
+// Copyright (C) 2007, Fredrik Kuivinen <frekui@gmail.com>
+//               2007, Petr Baudis <pasky@suse.cz>
+//          2008-2011, Jakub Narebski <jnareb@gmail.com>
+
+/**
+ * @fileOverview JavaScript side of Ajax-y 'blame_incremental' view in gitweb
+ * @license GPLv2 or later
+ */
+
+/* ============================================================ */
+/*
+ * This code uses DOM methods instead of (nonstandard) innerHTML
+ * to modify page.
+ *
+ * innerHTML is non-standard IE extension, though supported by most
+ * browsers; however Firefox up to version 1.5 didn't implement it in
+ * a strict mode (application/xml+xhtml mimetype).
+ *
+ * Also my simple benchmarks show that using elem.firstChild.data =
+ * 'content' is slightly faster than elem.innerHTML = 'content'.  It
+ * is however more fragile (text element fragment must exists), and
+ * less feature-rich (we cannot add HTML).
+ *
+ * Note that DOM 2 HTML is preferred over generic DOM 2 Core; the
+ * equivalent using DOM 2 Core is usually shown in comments.
+ */
+
+
+/* ............................................................ */
+/* utility/helper functions (and variables) */
+
+var projectUrl; // partial query + separator ('?' or ';')
+
+// 'commits' is an associative map. It maps SHA1s to Commit objects.
+var commits = {};
+
+/**
+ * constructor for Commit objects, used in 'blame'
+ * @class Represents a blamed commit
+ * @param {String} sha1: SHA-1 identifier of a commit
+ */
+function Commit(sha1) {
+       if (this instanceof Commit) {
+               this.sha1 = sha1;
+               this.nprevious = 0; /* number of 'previous', effective parents */
+       } else {
+               return new Commit(sha1);
+       }
+}
+
+/* ............................................................ */
+/* progress info, timing, error reporting */
+
+var blamedLines = 0;
+var totalLines  = '???';
+var div_progress_bar;
+var div_progress_info;
+
+/**
+ * Detects how many lines does a blamed file have,
+ * This information is used in progress info
+ *
+ * @returns {Number|String} Number of lines in file, or string '...'
+ */
+function countLines() {
+       var table =
+               document.getElementById('blame_table') ||
+               document.getElementsByTagName('table')[0];
+
+       if (table) {
+               return table.getElementsByTagName('tr').length - 1; // for header
+       } else {
+               return '...';
+       }
+}
+
+/**
+ * update progress info and length (width) of progress bar
+ *
+ * @globals div_progress_info, div_progress_bar, blamedLines, totalLines
+ */
+function updateProgressInfo() {
+       if (!div_progress_info) {
+               div_progress_info = document.getElementById('progress_info');
+       }
+       if (!div_progress_bar) {
+               div_progress_bar = document.getElementById('progress_bar');
+       }
+       if (!div_progress_info && !div_progress_bar) {
+               return;
+       }
+
+       var percentage = Math.floor(100.0*blamedLines/totalLines);
+
+       if (div_progress_info) {
+               div_progress_info.firstChild.data  = blamedLines + ' / ' + totalLines +
+                       ' (' + padLeftStr(percentage, 3, '\u00A0') + '%)';
+       }
+
+       if (div_progress_bar) {
+               //div_progress_bar.setAttribute('style', 'width: '+percentage+'%;');
+               div_progress_bar.style.width = percentage + '%';
+       }
+}
+
+
+var t_interval_server = '';
+var cmds_server = '';
+var t0 = new Date();
+
+/**
+ * write how much it took to generate data, and to run script
+ *
+ * @globals t0, t_interval_server, cmds_server
+ */
+function writeTimeInterval() {
+       var info_time = document.getElementById('generating_time');
+       if (!info_time || !t_interval_server) {
+               return;
+       }
+       var t1 = new Date();
+       info_time.firstChild.data += ' + (' +
+               t_interval_server + ' sec server blame_data / ' +
+               (t1.getTime() - t0.getTime())/1000 + ' sec client JavaScript)';
+
+       var info_cmds = document.getElementById('generating_cmd');
+       if (!info_time || !cmds_server) {
+               return;
+       }
+       info_cmds.firstChild.data += ' + ' + cmds_server;
+}
+
+/**
+ * show an error message alert to user within page (in progress info area)
+ * @param {String} str: plain text error message (no HTML)
+ *
+ * @globals div_progress_info
+ */
+function errorInfo(str) {
+       if (!div_progress_info) {
+               div_progress_info = document.getElementById('progress_info');
+       }
+       if (div_progress_info) {
+               div_progress_info.className = 'error';
+               div_progress_info.firstChild.data = str;
+       }
+}
+
+/* ............................................................ */
+/* coloring rows during blame_data (git blame --incremental) run */
+
+/**
+ * used to extract N from 'colorN', where N is a number,
+ * @constant
+ */
+var colorRe = /\bcolor([0-9]*)\b/;
+
+/**
+ * return N if <tr class="colorN">, otherwise return null
+ * (some browsers require CSS class names to begin with letter)
+ *
+ * @param {HTMLElement} tr: table row element to check
+ * @param {String} tr.className: 'class' attribute of tr element
+ * @returns {Number|null} N if tr.className == 'colorN', otherwise null
+ *
+ * @globals colorRe
+ */
+function getColorNo(tr) {
+       if (!tr) {
+               return null;
+       }
+       var className = tr.className;
+       if (className) {
+               var match = colorRe.exec(className);
+               if (match) {
+                       return parseInt(match[1], 10);
+               }
+       }
+       return null;
+}
+
+var colorsFreq = [0, 0, 0];
+/**
+ * return one of given possible colors (currently least used one)
+ * example: chooseColorNoFrom(2, 3) returns 2 or 3
+ *
+ * @param {Number[]} arguments: one or more numbers
+ *        assumes that  1 <= arguments[i] <= colorsFreq.length
+ * @returns {Number} Least used color number from arguments
+ * @globals colorsFreq
+ */
+function chooseColorNoFrom() {
+       // choose the color which is least used
+       var colorNo = arguments[0];
+       for (var i = 1; i < arguments.length; i++) {
+               if (colorsFreq[arguments[i]-1] < colorsFreq[colorNo-1]) {
+                       colorNo = arguments[i];
+               }
+       }
+       colorsFreq[colorNo-1]++;
+       return colorNo;
+}
+
+/**
+ * given two neighbor <tr> elements, find color which would be different
+ * from color of both of neighbors; used to 3-color blame table
+ *
+ * @param {HTMLElement} tr_prev
+ * @param {HTMLElement} tr_next
+ * @returns {Number} color number N such that
+ * colorN != tr_prev.className && colorN != tr_next.className
+ */
+function findColorNo(tr_prev, tr_next) {
+       var color_prev = getColorNo(tr_prev);
+       var color_next = getColorNo(tr_next);
+
+
+       // neither of neighbors has color set
+       // THEN we can use any of 3 possible colors
+       if (!color_prev && !color_next) {
+               return chooseColorNoFrom(1,2,3);
+       }
+
+       // either both neighbors have the same color,
+       // or only one of neighbors have color set
+       // THEN we can use any color except given
+       var color;
+       if (color_prev === color_next) {
+               color = color_prev; // = color_next;
+       } else if (!color_prev) {
+               color = color_next;
+       } else if (!color_next) {
+               color = color_prev;
+       }
+       if (color) {
+               return chooseColorNoFrom((color % 3) + 1, ((color+1) % 3) + 1);
+       }
+
+       // neighbors have different colors
+       // THEN there is only one color left
+       return (3 - ((color_prev + color_next) % 3));
+}
+
+/* ............................................................ */
+/* coloring rows like 'blame' after 'blame_data' finishes */
+
+/**
+ * returns true if given row element (tr) is first in commit group
+ * to be used only after 'blame_data' finishes (after processing)
+ *
+ * @param {HTMLElement} tr: table row
+ * @returns {Boolean} true if TR is first in commit group
+ */
+function isStartOfGroup(tr) {
+       return tr.firstChild.className === 'sha1';
+}
+
+/**
+ * change colors to use zebra coloring (2 colors) instead of 3 colors
+ * concatenate neighbor commit groups belonging to the same commit
+ *
+ * @globals colorRe
+ */
+function fixColorsAndGroups() {
+       var colorClasses = ['light', 'dark'];
+       var linenum = 1;
+       var tr, prev_group;
+       var colorClass = 0;
+       var table =
+               document.getElementById('blame_table') ||
+               document.getElementsByTagName('table')[0];
+
+       while ((tr = document.getElementById('l'+linenum))) {
+       // index origin is 0, which is table header; start from 1
+       //while ((tr = table.rows[linenum])) { // <- it is slower
+               if (isStartOfGroup(tr, linenum, document)) {
+                       if (prev_group &&
+                           prev_group.firstChild.firstChild.href ===
+                                   tr.firstChild.firstChild.href) {
+                               // we have to concatenate groups
+                               var prev_rows = prev_group.firstChild.rowSpan || 1;
+                               var curr_rows =         tr.firstChild.rowSpan || 1;
+                               prev_group.firstChild.rowSpan = prev_rows + curr_rows;
+                               //tr.removeChild(tr.firstChild);
+                               tr.deleteCell(0); // DOM2 HTML way
+                       } else {
+                               colorClass = (colorClass + 1) % 2;
+                               prev_group = tr;
+                       }
+               }
+               var tr_class = tr.className;
+               tr.className = tr_class.replace(colorRe, colorClasses[colorClass]);
+               linenum++;
+       }
+}
+
+
+/* ============================================================ */
+/* main part: parsing response */
+
+/**
+ * Function called for each blame entry, as soon as it finishes.
+ * It updates page via DOM manipulation, adding sha1 info, etc.
+ *
+ * @param {Commit} commit: blamed commit
+ * @param {Object} group: object representing group of lines,
+ *                        which blame the same commit (blame entry)
+ *
+ * @globals blamedLines
+ */
+function handleLine(commit, group) {
+       /*
+          This is the structure of the HTML fragment we are working
+          with:
+
+          <tr id="l123" class="">
+            <td class="sha1" title=""><a href=""> </a></td>
+            <td class="linenr"><a class="linenr" href="">123</a></td>
+            <td class="pre"># times (my ext3 doesn&#39;t).</td>
+          </tr>
+       */
+
+       var resline = group.resline;
+
+       // format date and time string only once per commit
+       if (!commit.info) {
+               /* e.g. 'Kay Sievers, 2005-08-07 21:49:46 +0200' */
+               commit.info = commit.author + ', ' +
+                       formatDateISOLocal(commit.authorTime, commit.authorTimezone);
+       }
+
+       // color depends on group of lines, not only on blamed commit
+       var colorNo = findColorNo(
+               document.getElementById('l'+(resline-1)),
+               document.getElementById('l'+(resline+group.numlines))
+       );
+
+       // loop over lines in commit group
+       for (var i = 0; i < group.numlines; i++, resline++) {
+               var tr = document.getElementById('l'+resline);
+               if (!tr) {
+                       break;
+               }
+               /*
+                       <tr id="l123" class="">
+                         <td class="sha1" title=""><a href=""> </a></td>
+                         <td class="linenr"><a class="linenr" href="">123</a></td>
+                         <td class="pre"># times (my ext3 doesn&#39;t).</td>
+                       </tr>
+               */
+               var td_sha1  = tr.firstChild;
+               var a_sha1   = td_sha1.firstChild;
+               var a_linenr = td_sha1.nextSibling.firstChild;
+
+               /* <tr id="l123" class=""> */
+               var tr_class = '';
+               if (colorNo !== null) {
+                       tr_class = 'color'+colorNo;
+               }
+               if (commit.boundary) {
+                       tr_class += ' boundary';
+               }
+               if (commit.nprevious === 0) {
+                       tr_class += ' no-previous';
+               } else if (commit.nprevious > 1) {
+                       tr_class += ' multiple-previous';
+               }
+               tr.className = tr_class;
+
+               /* <td class="sha1" title="?" rowspan="?"><a href="?">?</a></td> */
+               if (i === 0) {
+                       td_sha1.title = commit.info;
+                       td_sha1.rowSpan = group.numlines;
+
+                       a_sha1.href = projectUrl + 'a=commit;h=' + commit.sha1;
+                       if (a_sha1.firstChild) {
+                               a_sha1.firstChild.data = commit.sha1.substr(0, 8);
+                       } else {
+                               a_sha1.appendChild(
+                                       document.createTextNode(commit.sha1.substr(0, 8)));
+                       }
+                       if (group.numlines >= 2) {
+                               var fragment = document.createDocumentFragment();
+                               var br   = document.createElement("br");
+                               var match = commit.author.match(/\b([A-Z])\B/g);
+                               if (match) {
+                                       var text = document.createTextNode(
+                                                       match.join(''));
+                               }
+                               if (br && text) {
+                                       var elem = fragment || td_sha1;
+                                       elem.appendChild(br);
+                                       elem.appendChild(text);
+                                       if (fragment) {
+                                               td_sha1.appendChild(fragment);
+                                       }
+                               }
+                       }
+               } else {
+                       //tr.removeChild(td_sha1); // DOM2 Core way
+                       tr.deleteCell(0); // DOM2 HTML way
+               }
+
+               /* <td class="linenr"><a class="linenr" href="?">123</a></td> */
+               var linenr_commit =
+                       ('previous' in commit ? commit.previous : commit.sha1);
+               var linenr_filename =
+                       ('file_parent' in commit ? commit.file_parent : commit.filename);
+               a_linenr.href = projectUrl + 'a=blame_incremental' +
+                       ';hb=' + linenr_commit +
+                       ';f='  + encodeURIComponent(linenr_filename) +
+                       '#l' + (group.srcline + i);
+
+               blamedLines++;
+
+               //updateProgressInfo();
+       }
+}
+
+// ----------------------------------------------------------------------
+
+/**#@+
+ * @constant
+ */
+var sha1Re = /^([0-9a-f]{40}) ([0-9]+) ([0-9]+) ([0-9]+)/;
+var infoRe = /^([a-z-]+) ?(.*)/;
+var endRe  = /^END ?([^ ]*) ?(.*)/;
+/**@-*/
+
+var curCommit = new Commit();
+var curGroup  = {};
+
+/**
+ * Parse output from 'git blame --incremental [...]', received via
+ * XMLHttpRequest from server (blamedataUrl), and call handleLine
+ * (which updates page) as soon as blame entry is completed.
+ *
+ * @param {String[]} lines: new complete lines from blamedata server
+ *
+ * @globals commits, curCommit, curGroup, t_interval_server, cmds_server
+ * @globals sha1Re, infoRe, endRe
+ */
+function processBlameLines(lines) {
+       var match;
+
+       for (var i = 0, len = lines.length; i < len; i++) {
+
+               if ((match = sha1Re.exec(lines[i]))) {
+                       var sha1 = match[1];
+                       var srcline  = parseInt(match[2], 10);
+                       var resline  = parseInt(match[3], 10);
+                       var numlines = parseInt(match[4], 10);
+
+                       var c = commits[sha1];
+                       if (!c) {
+                               c = new Commit(sha1);
+                               commits[sha1] = c;
+                       }
+                       curCommit = c;
+
+                       curGroup.srcline = srcline;
+                       curGroup.resline = resline;
+                       curGroup.numlines = numlines;
+
+               } else if ((match = infoRe.exec(lines[i]))) {
+                       var info = match[1];
+                       var data = match[2];
+                       switch (info) {
+                       case 'filename':
+                               curCommit.filename = unquote(data);
+                               // 'filename' information terminates the entry
+                               handleLine(curCommit, curGroup);
+                               updateProgressInfo();
+                               break;
+                       case 'author':
+                               curCommit.author = data;
+                               break;
+                       case 'author-time':
+                               curCommit.authorTime = parseInt(data, 10);
+                               break;
+                       case 'author-tz':
+                               curCommit.authorTimezone = data;
+                               break;
+                       case 'previous':
+                               curCommit.nprevious++;
+                               // store only first 'previous' header
+                               if (!('previous' in curCommit)) {
+                                       var parts = data.split(' ', 2);
+                                       curCommit.previous    = parts[0];
+                                       curCommit.file_parent = unquote(parts[1]);
+                               }
+                               break;
+                       case 'boundary':
+                               curCommit.boundary = true;
+                               break;
+                       } // end switch
+
+               } else if ((match = endRe.exec(lines[i]))) {
+                       t_interval_server = match[1];
+                       cmds_server = match[2];
+
+               } else if (lines[i] !== '') {
+                       // malformed line
+
+               } // end if (match)
+
+       } // end for (lines)
+}
+
+/**
+ * Process new data and return pointer to end of processed part
+ *
+ * @param {String} unprocessed: new data (from nextReadPos)
+ * @param {Number} nextReadPos: end of last processed data
+ * @return {Number} end of processed data (new value for nextReadPos)
+ */
+function processData(unprocessed, nextReadPos) {
+       var lastLineEnd = unprocessed.lastIndexOf('\n');
+       if (lastLineEnd !== -1) {
+               var lines = unprocessed.substring(0, lastLineEnd).split('\n');
+               nextReadPos += lastLineEnd + 1 /* 1 == '\n'.length */;
+
+               processBlameLines(lines);
+       } // end if
+
+       return nextReadPos;
+}
+
+/**
+ * Handle XMLHttpRequest errors
+ *
+ * @param {XMLHttpRequest} xhr: XMLHttpRequest object
+ * @param {Number} [xhr.pollTimer] ID of the timeout to clear
+ *
+ * @globals commits
+ */
+function handleError(xhr) {
+       errorInfo('Server error: ' +
+               xhr.status + ' - ' + (xhr.statusText || 'Error contacting server'));
+
+       if (typeof xhr.pollTimer === "number") {
+               clearTimeout(xhr.pollTimer);
+               delete xhr.pollTimer;
+       }
+       commits = {}; // free memory
+}
+
+/**
+ * Called after XMLHttpRequest finishes (loads)
+ *
+ * @param {XMLHttpRequest} xhr: XMLHttpRequest object
+ * @param {Number} [xhr.pollTimer] ID of the timeout to clear
+ *
+ * @globals commits
+ */
+function responseLoaded(xhr) {
+       if (typeof xhr.pollTimer === "number") {
+               clearTimeout(xhr.pollTimer);
+               delete xhr.pollTimer;
+       }
+
+       fixColorsAndGroups();
+       writeTimeInterval();
+       commits = {}; // free memory
+}
+
+/**
+ * handler for XMLHttpRequest onreadystatechange event
+ * @see startBlame
+ *
+ * @param {XMLHttpRequest} xhr: XMLHttpRequest object
+ * @param {Number} xhr.prevDataLength: previous value of xhr.responseText.length
+ * @param {Number} xhr.nextReadPos: start of unread part of xhr.responseText
+ * @param {Number} [xhr.pollTimer] ID of the timeout (to reset or cancel)
+ * @param {Boolean} fromTimer: if handler was called from timer
+ */
+function handleResponse(xhr, fromTimer) {
+
+       /*
+        * xhr.readyState
+        *
+        *  Value  Constant (W3C)    Description
+        *  -------------------------------------------------------------------
+        *  0      UNSENT            open() has not been called yet.
+        *  1      OPENED            send() has not been called yet.
+        *  2      HEADERS_RECEIVED  send() has been called, and headers
+        *                           and status are available.
+        *  3      LOADING           Downloading; responseText holds partial data.
+        *  4      DONE              The operation is complete.
+        */
+
+       if (xhr.readyState !== 4 && xhr.readyState !== 3) {
+               return;
+       }
+
+       // the server returned error
+       // try ... catch block is to work around bug in IE8
+       try {
+               if (xhr.readyState === 3 && xhr.status !== 200) {
+                       return;
+               }
+       } catch (e) {
+               return;
+       }
+       if (xhr.readyState === 4 && xhr.status !== 200) {
+               handleError(xhr);
+               return;
+       }
+
+       // In konqueror xhr.responseText is sometimes null here...
+       if (xhr.responseText === null) {
+               return;
+       }
+
+
+       // extract new whole (complete) lines, and process them
+       if (xhr.prevDataLength !== xhr.responseText.length) {
+               xhr.prevDataLength = xhr.responseText.length;
+               var unprocessed = xhr.responseText.substring(xhr.nextReadPos);
+               xhr.nextReadPos = processData(unprocessed, xhr.nextReadPos);
+       }
+
+       // did we finish work?
+       if (xhr.readyState === 4) {
+               responseLoaded(xhr);
+               return;
+       }
+
+       // if we get from timer, we have to restart it
+       // otherwise onreadystatechange gives us partial response, timer not needed
+       if (fromTimer) {
+               setTimeout(function () {
+                       handleResponse(xhr, true);
+               }, 1000);
+
+       } else if (typeof xhr.pollTimer === "number") {
+               clearTimeout(xhr.pollTimer);
+               delete xhr.pollTimer;
+       }
+}
+
+// ============================================================
+// ------------------------------------------------------------
+
+/**
+ * Incrementally update line data in blame_incremental view in gitweb.
+ *
+ * @param {String} blamedataUrl: URL to server script generating blame data.
+ * @param {String} bUrl: partial URL to project, used to generate links.
+ *
+ * Called from 'blame_incremental' view after loading table with
+ * file contents, a base for blame view.
+ *
+ * @globals t0, projectUrl, div_progress_bar, totalLines
+*/
+function startBlame(blamedataUrl, bUrl) {
+
+       var xhr = createRequestObject();
+       if (!xhr) {
+               errorInfo('ERROR: XMLHttpRequest not supported');
+               return;
+       }
+
+       t0 = new Date();
+       projectUrl = bUrl + (bUrl.indexOf('?') === -1 ? '?' : ';');
+       if ((div_progress_bar = document.getElementById('progress_bar'))) {
+               //div_progress_bar.setAttribute('style', 'width: 100%;');
+               div_progress_bar.style.cssText = 'width: 100%;';
+       }
+       totalLines = countLines();
+       updateProgressInfo();
+
+       /* add extra properties to xhr object to help processing response */
+       xhr.prevDataLength = -1;  // used to detect if we have new data
+       xhr.nextReadPos = 0;      // where unread part of response starts
+
+       xhr.onreadystatechange = function () {
+               handleResponse(xhr, false);
+       };
+
+       xhr.open('GET', blamedataUrl);
+       xhr.setRequestHeader('Accept', 'text/plain');
+       xhr.send(null);
+
+       // not all browsers call onreadystatechange event on each server flush
+       // poll response using timer every second to handle this issue
+       xhr.pollTimer = setTimeout(function () {
+               handleResponse(xhr, true);
+       }, 1000);
+}
+
+/* end of blame_incremental.js */
diff --git a/gitweb/static/js/javascript-detection.js b/gitweb/static/js/javascript-detection.js
new file mode 100644 (file)
index 0000000..fa2596f
--- /dev/null
@@ -0,0 +1,43 @@
+// Copyright (C) 2007, Fredrik Kuivinen <frekui@gmail.com>
+//               2007, Petr Baudis <pasky@suse.cz>
+//          2008-2011, Jakub Narebski <jnareb@gmail.com>
+
+/**
+ * @fileOverview Detect if JavaScript is enabled, and pass it to server-side
+ * @license GPLv2 or later
+ */
+
+
+/* ============================================================ */
+/* Manipulating links */
+
+/**
+ * used to check if link has 'js' query parameter already (at end),
+ * and other reasons to not add 'js=1' param at the end of link
+ * @constant
+ */
+var jsExceptionsRe = /[;?]js=[01](#.*)?$/;
+
+/**
+ * Add '?js=1' or ';js=1' to the end of every link in the document
+ * that doesn't have 'js' query parameter set already.
+ *
+ * Links with 'js=1' lead to JavaScript version of given action, if it
+ * exists (currently there is only 'blame_incremental' for 'blame')
+ *
+ * To be used as `window.onload` handler
+ *
+ * @globals jsExceptionsRe
+ */
+function fixLinks() {
+       var allLinks = document.getElementsByTagName("a") || document.links;
+       for (var i = 0, len = allLinks.length; i < len; i++) {
+               var link = allLinks[i];
+               if (!jsExceptionsRe.test(link)) {
+                       link.href = link.href.replace(/(#|$)/,
+                               (link.href.indexOf('?') === -1 ? '?' : ';') + 'js=1$1');
+               }
+       }
+}
+
+/* end of javascript-detection.js */
diff --git a/gitweb/static/js/lib/common-lib.js b/gitweb/static/js/lib/common-lib.js
new file mode 100644 (file)
index 0000000..99e3eb8
--- /dev/null
@@ -0,0 +1,224 @@
+// Copyright (C) 2007, Fredrik Kuivinen <frekui@gmail.com>
+//               2007, Petr Baudis <pasky@suse.cz>
+//          2008-2011, Jakub Narebski <jnareb@gmail.com>
+
+/**
+ * @fileOverview Generic JavaScript code (helper functions)
+ * @license GPLv2 or later
+ */
+
+
+/* ============================================================ */
+/* ............................................................ */
+/* Padding */
+
+/**
+ * pad INPUT on the left with STR that is assumed to have visible
+ * width of single character (for example nonbreakable spaces),
+ * to WIDTH characters
+ *
+ * example: padLeftStr(12, 3, '\u00A0') == '\u00A012'
+ *          ('\u00A0' is nonbreakable space)
+ *
+ * @param {Number|String} input: number to pad
+ * @param {Number} width: visible width of output
+ * @param {String} str: string to prefix to string, defaults to '\u00A0'
+ * @returns {String} INPUT prefixed with STR x (WIDTH - INPUT.length)
+ */
+function padLeftStr(input, width, str) {
+       var prefix = '';
+       if (typeof str === 'undefined') {
+               ch = '\u00A0'; // using '&nbsp;' doesn't work in all browsers
+       }
+
+       width -= input.toString().length;
+       while (width > 0) {
+               prefix += str;
+               width--;
+       }
+       return prefix + input;
+}
+
+/**
+ * Pad INPUT on the left to WIDTH, using given padding character CH,
+ * for example padLeft('a', 3, '_') is '__a'
+ *             padLeft(4, 2) is '04' (same as padLeft(4, 2, '0'))
+ *
+ * @param {String} input: input value converted to string.
+ * @param {Number} width: desired length of output.
+ * @param {String} ch: single character to prefix to string, defaults to '0'.
+ *
+ * @returns {String} Modified string, at least SIZE length.
+ */
+function padLeft(input, width, ch) {
+       var s = input + "";
+       if (typeof ch === 'undefined') {
+               ch = '0';
+       }
+
+       while (s.length < width) {
+               s = ch + s;
+       }
+       return s;
+}
+
+
+/* ............................................................ */
+/* Handling browser incompatibilities */
+
+/**
+ * Create XMLHttpRequest object in cross-browser way
+ * @returns XMLHttpRequest object, or null
+ */
+function createRequestObject() {
+       try {
+               return new XMLHttpRequest();
+       } catch (e) {}
+       try {
+               return window.createRequest();
+       } catch (e) {}
+       try {
+               return new ActiveXObject("Msxml2.XMLHTTP");
+       } catch (e) {}
+       try {
+               return new ActiveXObject("Microsoft.XMLHTTP");
+       } catch (e) {}
+
+       return null;
+}
+
+
+/**
+ * Insert rule giving specified STYLE to given SELECTOR at the end of
+ * first CSS stylesheet.
+ *
+ * @param {String} selector: CSS selector, e.g. '.class'
+ * @param {String} style: rule contents, e.g. 'background-color: red;'
+ */
+function addCssRule(selector, style) {
+       var stylesheet = document.styleSheets[0];
+
+       var theRules = [];
+       if (stylesheet.cssRules) {     // W3C way
+               theRules = stylesheet.cssRules;
+       } else if (stylesheet.rules) { // IE way
+               theRules = stylesheet.rules;
+       }
+
+       if (stylesheet.insertRule) {    // W3C way
+               stylesheet.insertRule(selector + ' { ' + style + ' }', theRules.length);
+       } else if (stylesheet.addRule) { // IE way
+               stylesheet.addRule(selector, style);
+       }
+}
+
+
+/* ............................................................ */
+/* Support for legacy browsers */
+
+/**
+ * Provides getElementsByClassName method, if there is no native
+ * implementation of this method.
+ *
+ * NOTE that there are limits and differences compared to native
+ * getElementsByClassName as defined by e.g.:
+ *   https://developer.mozilla.org/en/DOM/document.getElementsByClassName
+ *   https://www.whatwg.org/specs/web-apps/current-work/multipage/dom.html#dom-getelementsbyclassname
+ *   https://www.whatwg.org/specs/web-apps/current-work/multipage/dom.html#dom-document-getelementsbyclassname
+ *
+ * Namely, this implementation supports only single class name as
+ * argument and not set of space-separated tokens representing classes,
+ * it returns Array of nodes rather than live NodeList, and has
+ * additional optional argument where you can limit search to given tags
+ * (via getElementsByTagName).
+ *
+ * Based on
+ *   https://code.google.com/p/getelementsbyclassname/
+ *   http://www.dustindiaz.com/getelementsbyclass/
+ *   https://stackoverflow.com/questions/1818865/do-we-have-getelementsbyclassname-in-javascript
+ *
+ * See also https://johnresig.com/blog/getelementsbyclassname-speed-comparison/
+ *
+ * @param {String} class: name of _single_ class to find
+ * @param {String} [taghint] limit search to given tags
+ * @returns {Node[]} array of matching elements
+ */
+if (!('getElementsByClassName' in document)) {
+       document.getElementsByClassName = function (classname, taghint) {
+               taghint = taghint || "*";
+               var elements = (taghint === "*" && document.all) ?
+                              document.all :
+                              document.getElementsByTagName(taghint);
+               var pattern = new RegExp("(^|\\s)" + classname + "(\\s|$)");
+               var matches= [];
+               for (var i = 0, j = 0, n = elements.length; i < n; i++) {
+                       var el= elements[i];
+                       if (el.className && pattern.test(el.className)) {
+                               // matches.push(el);
+                               matches[j] = el;
+                               j++;
+                       }
+               }
+               return matches;
+       };
+} // end if
+
+
+/* ............................................................ */
+/* unquoting/unescaping filenames */
+
+/**#@+
+ * @constant
+ */
+var escCodeRe = /\\([^0-7]|[0-7]{1,3})/g;
+var octEscRe = /^[0-7]{1,3}$/;
+var maybeQuotedRe = /^\"(.*)\"$/;
+/**#@-*/
+
+/**
+ * unquote maybe C-quoted filename (as used by git, i.e. it is
+ * in double quotes '"' if there is any escape character used)
+ * e.g. 'aa' -> 'aa', '"a\ta"' -> 'a   a'
+ *
+ * @param {String} str: git-quoted string
+ * @returns {String} Unquoted and unescaped string
+ *
+ * @globals escCodeRe, octEscRe, maybeQuotedRe
+ */
+function unquote(str) {
+       function unq(seq) {
+               var es = {
+                       // character escape codes, aka escape sequences (from C)
+                       // replacements are to some extent JavaScript specific
+                       t: "\t",   // tab            (HT, TAB)
+                       n: "\n",   // newline        (NL)
+                       r: "\r",   // return         (CR)
+                       f: "\f",   // form feed      (FF)
+                       b: "\b",   // backspace      (BS)
+                       a: "\x07", // alarm (bell)   (BEL)
+                       e: "\x1B", // escape         (ESC)
+                       v: "\v"    // vertical tab   (VT)
+               };
+
+               if (seq.search(octEscRe) !== -1) {
+                       // octal char sequence
+                       return String.fromCharCode(parseInt(seq, 8));
+               } else if (seq in es) {
+                       // C escape sequence, aka character escape code
+                       return es[seq];
+               }
+               // quoted ordinary character
+               return seq;
+       }
+
+       var match = str.match(maybeQuotedRe);
+       if (match) {
+               str = match[1];
+               // perhaps str = eval('"'+str+'"'); would be enough?
+               str = str.replace(escCodeRe,
+                       function (substr, p1, offset, s) { return unq(p1); });
+       }
+       return str;
+}
+
+/* end of common-lib.js */
diff --git a/gitweb/static/js/lib/cookies.js b/gitweb/static/js/lib/cookies.js
new file mode 100644 (file)
index 0000000..66b9a07
--- /dev/null
@@ -0,0 +1,114 @@
+/**
+ * @fileOverview Accessing cookies from JavaScript
+ * @license GPLv2 or later
+ */
+
+/*
+ * Based on subsection "Cookies in JavaScript" of "Professional
+ * JavaScript for Web Developers" by Nicholas C. Zakas and cookie
+ * plugin from jQuery (dual licensed under the MIT and GPL licenses)
+ */
+
+
+/**
+ * Create a cookie with the given name and value,
+ * and other optional parameters.
+ *
+ * @example
+ *   setCookie('foo', 'bar'); // will be deleted when browser exits
+ *   setCookie('foo', 'bar', { expires: new Date(Date.parse('Jan 1, 2012')) });
+ *   setCookie('foo', 'bar', { expires: 7 }); // 7 days = 1 week
+ *   setCookie('foo', 'bar', { expires: 14, path: '/' });
+ *
+ * @param {String} sName:    Unique name of a cookie (letters, numbers, underscores).
+ * @param {String} sValue:   The string value stored in a cookie.
+ * @param {Object} [options] An object literal containing key/value pairs
+ *                           to provide optional cookie attributes.
+ * @param {String|Number|Date} [options.expires] Either literal string to be used as cookie expires,
+ *                            or an integer specifying the expiration date from now on in days,
+ *                            or a Date object to be used as cookie expiration date.
+ *                            If a negative value is specified or a date in the past),
+ *                            the cookie will be deleted.
+ *                            If set to null or omitted, the cookie will be a session cookie
+ *                            and will not be retained when the browser exits.
+ * @param {String} [options.path] Restrict access of a cookie to particular directory
+ *                               (default: path of page that created the cookie).
+ * @param {String} [options.domain] Override what web sites are allowed to access cookie
+ *                                  (default: domain of page that created the cookie).
+ * @param {Boolean} [options.secure] If true, the secure attribute of the cookie will be set
+ *                                   and the cookie would be accessible only from secure sites
+ *                                   (cookie transmission will require secure protocol like HTTPS).
+ */
+function setCookie(sName, sValue, options) {
+       options = options || {};
+       if (sValue === null) {
+               sValue = '';
+               option.expires = 'delete';
+       }
+
+       var sCookie = sName + '=' + encodeURIComponent(sValue);
+
+       if (options.expires) {
+               var oExpires = options.expires, sDate;
+               if (oExpires === 'delete') {
+                       sDate = 'Thu, 01 Jan 1970 00:00:00 GMT';
+               } else if (typeof oExpires === 'string') {
+                       sDate = oExpires;
+               } else {
+                       var oDate;
+                       if (typeof oExpires === 'number') {
+                               oDate = new Date();
+                               oDate.setTime(oDate.getTime() + (oExpires * 24 * 60 * 60 * 1000)); // days to ms
+                       } else {
+                               oDate = oExpires;
+                       }
+                       sDate = oDate.toGMTString();
+               }
+               sCookie += '; expires=' + sDate;
+       }
+
+       if (options.path) {
+               sCookie += '; path=' + (options.path);
+       }
+       if (options.domain) {
+               sCookie += '; domain=' + (options.domain);
+       }
+       if (options.secure) {
+               sCookie += '; secure';
+       }
+       document.cookie = sCookie;
+}
+
+/**
+ * Get the value of a cookie with the given name.
+ *
+ * @param {String} sName: Unique name of a cookie (letters, numbers, underscores)
+ * @returns {String|null} The string value stored in a cookie
+ */
+function getCookie(sName) {
+       var sRE = '(?:; )?' + sName + '=([^;]*);?';
+       var oRE = new RegExp(sRE);
+       if (oRE.test(document.cookie)) {
+               return decodeURIComponent(RegExp['$1']);
+       } else {
+               return null;
+       }
+}
+
+/**
+ * Delete cookie with given name
+ *
+ * @param {String} sName:    Unique name of a cookie (letters, numbers, underscores)
+ * @param {Object} [options] An object literal containing key/value pairs
+ *                           to provide optional cookie attributes.
+ * @param {String} [options.path]   Must be the same as when setting a cookie
+ * @param {String} [options.domain] Must be the same as when setting a cookie
+ */
+function deleteCookie(sName, options) {
+       options = options || {};
+       options.expires = 'delete';
+
+       setCookie(sName, '', options);
+}
+
+/* end of cookies.js */
diff --git a/gitweb/static/js/lib/datetime.js b/gitweb/static/js/lib/datetime.js
new file mode 100644 (file)
index 0000000..f78c60a
--- /dev/null
@@ -0,0 +1,176 @@
+// Copyright (C) 2007, Fredrik Kuivinen <frekui@gmail.com>
+//               2007, Petr Baudis <pasky@suse.cz>
+//          2008-2011, Jakub Narebski <jnareb@gmail.com>
+
+/**
+ * @fileOverview Datetime manipulation: parsing and formatting
+ * @license GPLv2 or later
+ */
+
+
+/* ............................................................ */
+/* parsing and retrieving datetime related information */
+
+/**
+ * used to extract hours and minutes from timezone info, e.g '-0900'
+ * @constant
+ */
+var tzRe = /^([+\-])([0-9][0-9])([0-9][0-9])$/;
+
+/**
+ * convert numeric timezone +/-ZZZZ to offset from UTC in seconds
+ *
+ * @param {String} timezoneInfo: numeric timezone '(+|-)HHMM'
+ * @returns {Number} offset from UTC in seconds for timezone
+ *
+ * @globals tzRe
+ */
+function timezoneOffset(timezoneInfo) {
+       var match = tzRe.exec(timezoneInfo);
+       var tz_sign = (match[1] === '-' ? -1 : +1);
+       var tz_hour = parseInt(match[2],10);
+       var tz_min  = parseInt(match[3],10);
+
+       return tz_sign*(((tz_hour*60) + tz_min)*60);
+}
+
+/**
+ * return local (browser) timezone as offset from UTC in seconds
+ *
+ * @returns {Number} offset from UTC in seconds for local timezone
+ */
+function localTimezoneOffset() {
+       // getTimezoneOffset returns the time-zone offset from UTC,
+       // in _minutes_, for the current locale
+       return ((new Date()).getTimezoneOffset() * -60);
+}
+
+/**
+ * return local (browser) timezone as numeric timezone '(+|-)HHMM'
+ *
+ * @returns {String} locat timezone as -/+ZZZZ
+ */
+function localTimezoneInfo() {
+       var tzOffsetMinutes = (new Date()).getTimezoneOffset() * -1;
+
+       return formatTimezoneInfo(0, tzOffsetMinutes);
+}
+
+
+/**
+ * Parse RFC-2822 date into a Unix timestamp (into epoch)
+ *
+ * @param {String} date: date in RFC-2822 format, e.g. 'Thu, 21 Dec 2000 16:01:07 +0200'
+ * @returns {Number} epoch i.e. seconds since '00:00:00 1970-01-01 UTC'
+ */
+function parseRFC2822Date(date) {
+       // Date.parse accepts the IETF standard (RFC 1123 Section 5.2.14 and elsewhere)
+       // date syntax, which is defined in RFC 2822 (obsoletes RFC 822)
+       // and returns number of _milli_seconds since January 1, 1970, 00:00:00 UTC
+       return Date.parse(date) / 1000;
+}
+
+
+/* ............................................................ */
+/* formatting date */
+
+/**
+ * format timezone offset as numerical timezone '(+|-)HHMM' or '(+|-)HH:MM'
+ *
+ * @param {Number} hours:    offset in hours, e.g. 2 for '+0200'
+ * @param {Number} [minutes] offset in minutes, e.g. 30 for '-4030';
+ *                           it is split into hours if not 0 <= minutes < 60,
+ *                           for example 1200 would give '+0100';
+ *                           defaults to 0
+ * @param {String} [sep] separator between hours and minutes part,
+ *                       default is '', might be ':' for W3CDTF (rfc-3339)
+ * @returns {String} timezone in '(+|-)HHMM' or '(+|-)HH:MM' format
+ */
+function formatTimezoneInfo(hours, minutes, sep) {
+       minutes = minutes || 0; // to be able to use formatTimezoneInfo(hh)
+       sep = sep || ''; // default format is +/-ZZZZ
+
+       if (minutes < 0 || minutes > 59) {
+               hours = minutes > 0 ? Math.floor(minutes / 60) : Math.ceil(minutes / 60);
+               minutes = Math.abs(minutes - 60*hours); // sign of minutes is sign of hours
+               // NOTE: this works correctly because there is no UTC-00:30 timezone
+       }
+
+       var tzSign = hours >= 0 ? '+' : '-';
+       if (hours < 0) {
+               hours = -hours; // sign is stored in tzSign
+       }
+
+       return tzSign + padLeft(hours, 2, '0') + sep + padLeft(minutes, 2, '0');
+}
+
+/**
+ * translate 'utc' and 'local' to numerical timezone
+ * @param {String} timezoneInfo: might be 'utc' or 'local' (browser)
+ */
+function normalizeTimezoneInfo(timezoneInfo) {
+       switch (timezoneInfo) {
+       case 'utc':
+               return '+0000';
+       case 'local': // 'local' is browser timezone
+               return localTimezoneInfo();
+       }
+       return timezoneInfo;
+}
+
+
+/**
+ * return date in local time formatted in iso-8601 like format
+ * 'yyyy-mm-dd HH:MM:SS +/-ZZZZ' e.g. '2005-08-07 21:49:46 +0200'
+ *
+ * @param {Number} epoch: seconds since '00:00:00 1970-01-01 UTC'
+ * @param {String} timezoneInfo: numeric timezone '(+|-)HHMM'
+ * @returns {String} date in local time in iso-8601 like format
+ */
+function formatDateISOLocal(epoch, timezoneInfo) {
+       // date corrected by timezone
+       var localDate = new Date(1000 * (epoch +
+               timezoneOffset(timezoneInfo)));
+       var localDateStr = // e.g. '2005-08-07'
+               localDate.getUTCFullYear()                 + '-' +
+               padLeft(localDate.getUTCMonth()+1, 2, '0') + '-' +
+               padLeft(localDate.getUTCDate(),    2, '0');
+       var localTimeStr = // e.g. '21:49:46'
+               padLeft(localDate.getUTCHours(),   2, '0') + ':' +
+               padLeft(localDate.getUTCMinutes(), 2, '0') + ':' +
+               padLeft(localDate.getUTCSeconds(), 2, '0');
+
+       return localDateStr + ' ' + localTimeStr + ' ' + timezoneInfo;
+}
+
+/**
+ * return date in local time formatted in rfc-2822 format
+ * e.g. 'Thu, 21 Dec 2000 16:01:07 +0200'
+ *
+ * @param {Number} epoch: seconds since '00:00:00 1970-01-01 UTC'
+ * @param {String} timezoneInfo: numeric timezone '(+|-)HHMM'
+ * @param {Boolean} [padDay] e.g. 'Sun, 07 Aug' if true, 'Sun, 7 Aug' otherwise
+ * @returns {String} date in local time in rfc-2822 format
+ */
+function formatDateRFC2882(epoch, timezoneInfo, padDay) {
+       // A short textual representation of a month, three letters
+       var months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
+       // A textual representation of a day, three letters
+       var days = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
+       // date corrected by timezone
+       var localDate = new Date(1000 * (epoch +
+               timezoneOffset(timezoneInfo)));
+       var localDateStr = // e.g. 'Sun, 7 Aug 2005' or 'Sun, 07 Aug 2005'
+               days[localDate.getUTCDay()] + ', ' +
+               (padDay ? padLeft(localDate.getUTCDate(),2,'0') : localDate.getUTCDate()) + ' ' +
+               months[localDate.getUTCMonth()] + ' ' +
+               localDate.getUTCFullYear();
+       var localTimeStr = // e.g. '21:49:46'
+               padLeft(localDate.getUTCHours(),   2, '0') + ':' +
+               padLeft(localDate.getUTCMinutes(), 2, '0') + ':' +
+               padLeft(localDate.getUTCSeconds(), 2, '0');
+
+       return localDateStr + ' ' + localTimeStr + ' ' + timezoneInfo;
+}
+
+/* end of datetime.js */
diff --git a/shared.mak b/shared.mak
new file mode 100644 (file)
index 0000000..0e74920
--- /dev/null
@@ -0,0 +1,132 @@
+### Remove GNU make implicit rules
+
+## This speeds things up since we don't need to look for and stat() a
+## "foo.c,v" every time a rule referring to "foo.c" is in play. See
+## "make -p -f/dev/null | grep ^%::'".
+%:: %,v
+%:: RCS/%,v
+%:: RCS/%
+%:: s.%
+%:: SCCS/s.%
+
+## Likewise delete default $(SUFFIXES). See:
+##
+##     info make --index-search=.SUFFIXES
+.SUFFIXES:
+
+### Flags affecting all rules
+
+# A GNU make extension since gmake 3.72 (released in late 1994) to
+# remove the target of rules if commands in those rules fail. The
+# default is to only do that if make itself receives a signal. Affects
+# all targets, see:
+#
+#    info make --index-search=.DELETE_ON_ERROR
+.DELETE_ON_ERROR:
+
+### Global variables
+
+## comma, empty, space: handy variables as these tokens are either
+## special or can be hard to spot among other Makefile syntax.
+comma := ,
+empty :=
+space := $(empty) $(empty)
+
+### Quieting
+## common
+QUIET_SUBDIR0  = +$(MAKE) -C # space to separate -C and subdir
+QUIET_SUBDIR1  =
+
+ifneq ($(findstring w,$(firstword -$(MAKEFLAGS))),w)
+PRINT_DIR = --no-print-directory
+else # "make -w"
+NO_SUBDIR = :
+endif
+
+ifneq ($(findstring s,$(firstword -$(MAKEFLAGS))),s)
+ifndef V
+## common
+       QUIET_SUBDIR0  = +@subdir=
+       QUIET_SUBDIR1  = ;$(NO_SUBDIR) echo '   ' SUBDIR $$subdir; \
+                        $(MAKE) $(PRINT_DIR) -C $$subdir
+
+       QUIET          = @
+       QUIET_GEN      = @echo '   ' GEN $@;
+
+       QUIET_MKDIR_P_PARENT  = @echo '   ' MKDIR -p $(@D);
+
+## Used in "Makefile"
+       QUIET_CARGO    = @echo '   ' CARGO $@;
+       QUIET_CC       = @echo '   ' CC $@;
+       QUIET_AR       = @echo '   ' AR $@;
+       QUIET_LINK     = @echo '   ' LINK $@;
+       QUIET_BUILT_IN = @echo '   ' BUILTIN $@;
+       QUIET_CP       = @echo '   ' CP $< $@;
+       QUIET_LNCP     = @echo '   ' LN/CP $@;
+       QUIET_XGETTEXT = @echo '   ' XGETTEXT $@;
+       QUIET_MSGINIT  = @echo '   ' MSGINIT $@;
+       QUIET_MSGFMT   = @echo '   ' MSGFMT $@;
+       QUIET_MSGMERGE = @echo '   ' MSGMERGE $@;
+       QUIET_GCOV     = @echo '   ' GCOV $@;
+       QUIET_SP       = @echo '   ' SP $<;
+       QUIET_HDR      = @echo '   ' HDR $(<:hcc=h);
+       QUIET_RC       = @echo '   ' RC $@;
+
+## Used in "Makefile": SPATCH
+       QUIET_SPATCH                    = @echo '   ' SPATCH $< \>$@;
+       QUIET_SPATCH_TEST               = @echo '   ' SPATCH TEST $(@:.build/%=%);
+       QUIET_SPATCH_CAT                = @echo '   ' SPATCH CAT $(@:%.patch=%.d/)\*\*.patch \>$@;
+
+## Used in "Documentation/Makefile"
+       QUIET_ASCIIDOC  = @echo '   ' ASCIIDOC $@;
+       QUIET_XMLTO     = @echo '   ' XMLTO $@;
+       QUIET_DB2TEXI   = @echo '   ' DB2TEXI $@;
+       QUIET_MAKEINFO  = @echo '   ' MAKEINFO $@;
+       QUIET_DBLATEX   = @echo '   ' DBLATEX $@;
+       QUIET_XSLTPROC  = @echo '   ' XSLTPROC $@;
+       QUIET_GEN       = @echo '   ' GEN $@;
+       QUIET_STDERR    = 2> /dev/null
+
+       QUIET_LINT_GITLINK      = @echo '   ' LINT GITLINK $<;
+       QUIET_LINT_MANSEC       = @echo '   ' LINT MAN SEC $<;
+       QUIET_LINT_DELIMSEC     = @echo '   ' LINT DEL SEC $<;
+       QUIET_LINT_DOCSTYLE     = @echo '   ' LINT DOCSTYLE $<;
+       QUIET_LINT_MANEND       = @echo '   ' LINT MAN END $<;
+
+       export V
+endif
+endif
+
+### Templates
+
+## mkdir_p_parent: lazily "mkdir -p" the path needed for a $@
+## file. Uses $(wildcard) to avoid the "mkdir -p" if it's not
+## needed.
+##
+## Is racy, but in a good way; we might redundantly (and safely)
+## "mkdir -p" when running in parallel, but won't need to exhaustively create
+## individual rules for "a" -> "prefix" -> "dir" -> "file" if given a
+## "a/prefix/dir/file". This can instead be inserted at the start of
+## the "a/prefix/dir/file" rule.
+define mkdir_p_parent_template
+$(if $(wildcard $(@D)),,$(QUIET_MKDIR_P_PARENT)$(shell mkdir -p $(@D)))
+endef
+
+## Getting sick of writing -L$(SOMELIBDIR) $(CC_LD_DYNPATH)$(SOMELIBDIR)?
+## Write $(call libpath_template,$(SOMELIBDIR)) instead, perhaps?
+## With CC_LD_DYNPATH set to either an empty string or to "-L", the
+## the directory is not shown the second time.
+define libpath_template
+-L$(1) $(if $(filter-out -L,$(CC_LD_DYNPATH)),$(CC_LD_DYNPATH)$(1))
+endef
+
+# Populate build information into a file via GIT-VERSION-GEN. Requires the
+# absolute path to the root source directory as well as input and output files
+# as arguments, in that order.
+define version_gen
+GIT_BUILT_FROM_COMMIT="$(GIT_BUILT_FROM_COMMIT)" \
+GIT_DATE="$(GIT_DATE)" \
+GIT_USER_AGENT="$(GIT_USER_AGENT)" \
+GIT_VERSION="$(GIT_VERSION_OVERRIDE)" \
+$(SHELL_PATH) "$(1)/GIT-VERSION-GEN" "$(1)" "$(2)" "$(3)"
+endef