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Jeff King e5cb1e3f09 t4053: avoid writing to unopened pipe 
This fixes an occasional hang I see when running t4053 with
--verbose-log using dash.

Commit 1e3f26542a (diff --no-index: support reading from named pipes,
2023-07-05) added a test that "diff --no-index" will complain when
comparing a named pipe and a directory. The minimum we need to test this
is to mkfifo the pipe, and then run "git diff --no-index pipe some_dir".
But the test does one thing more: it spawns a background shell process
that opens the pipe for writing, like this:

        {
                (>pipe) &
        } &&

This extra writer _could_ be useful if Git misbehaves and tries to open
the pipe for reading. Without the writer, Git would block indefinitely
and the test would never end. But since we do not have such a bug, Git
does not open the pipe and it is the writing process which will block
indefinitely, since there are no readers. The test addresses this by
running "kill $!" in a test_when_finished block. Since the writer should
be blocking forever, this kill command will reliably find it waiting.

However, this seems to be somewhat racy, in that the writing process
sometimes hangs around even after the "kill". In a normal run of the
test script without options, this doesn't have any effect; the
main test script completes anyway. But with --verbose-log, we spawn a
"tee" process that reads the script output, and it won't end until all
descriptors pointing to its input pipe are closed. And the background
process that is hanging around still has its stderr, etc, pointed into
that pipe.

You can reproduce the situation like this:

  cd t
  ./t4053-diff-no-index.sh --verbose-log --stress

Let that run for a few minutes, and then you'll find that some of the
runs have hung. For example, at 11:53, I ran:

  $ ps xk start o pid,start,command | grep tee | head
   713459 11:48:06 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-9.out
   713527 11:48:06 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-15.out
   719434 11:48:07 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-1.out
   728117 11:48:08 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-5.out
   738738 11:48:09 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-31.out
   739457 11:48:09 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-27.out
   744432 11:48:10 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-21.out
   744471 11:48:10 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-29.out
   761961 11:48:12 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-0.out
   812299 11:48:19 tee -a /home/peff/compile/git/t/test-results/t4053-diff-no-index.stress-8.out

All of these have been hung for several minutes. We can investigate one
and see that it's waiting to get EOF on its input:

  $ strace -p 713459
  strace: Process 713459 attached
  read(0,
  ^C

Who else has that descriptor open?

  $ lsof -a -p 713459 -d 0 +E
  COMMAND    PID USER   FD   TYPE DEVICE SIZE/OFF    NODE NAME
  tee     713459 peff    0r  FIFO   0,13      0t0 3943636 pipe 719203,sh,5w 719203,sh,7w 719203,sh,12w 719203,sh,13w
  sh      719203 peff    5w  FIFO   0,13      0t0 3943636 pipe 713459,tee,0r 719203,sh,7w 719203,sh,12w 719203,sh,13w
  sh      719203 peff    7w  FIFO   0,13      0t0 3943636 pipe 713459,tee,0r 719203,sh,5w 719203,sh,12w 719203,sh,13w
  sh      719203 peff   12w  FIFO   0,13      0t0 3943636 pipe 713459,tee,0r 719203,sh,5w 719203,sh,7w 719203,sh,13w
  sh      719203 peff   13w  FIFO   0,13      0t0 3943636 pipe 713459,tee,0r 719203,sh,5w 719203,sh,7w 719203,sh,12w

It's a shell, presumably a subshell spawned by the main script. Though
it may seem odd, having the same descriptor open several times is not
unreasonable (they're all basically the original stdout/stderr of the
script that has been copied). And they should all close when the process
exits. So what's it doing? Curiously, it will exit as soon as we strace
it:

  $ strace -s 64 -p 719203
  strace: Process 719203 attached
  openat(AT_FDCWD, "pipe", O_WRONLY|O_CREAT|O_TRUNC, 0666) = -1 ENOENT (No such file or directory)
  write(2, "./t4053-diff-no-index.sh: 7: eval: ", 35) = 35
  write(2, "cannot create pipe: Directory nonexistent", 41) = 41
  write(2, "\n", 1)                       = 1
  exit_group(2)                           = ?
  +++ exited with 2 +++

I think what happens is this:

  - it is blocking in the openat() call for the pipe, as we expect (so
    this is definitely the backgrounded subshell mentioned above)

  - strace sends signals (probably STOP/CONT); those cause the kernel to
    stop blocking, but libc will restart the system call automatically

  - by this time, the "pipe" fifo is gone, so we'll actually try to
    create a regular file. But of course the surrounding directory is
    gone, too! So we get ENOENT, and then exit as normal.

So the blocking is something we expect to happen. But what we didn't
expect is for the process to still exist at all! It should have been
killed earlier when the parent process called "kill", but it wasn't. And
we can't catch the race at this point, because it happened much earlier.

One can guess, though, that there is some race with the shell setting up
the signal handling in the backgrounded subshell, and possibly blocking
or ignoring signals at the time that the "kill" is received.  Curiously,
the race does not seem to happen if I use "bash" instead of "dash", so
presumably bash's setup here is more atomic.

One fix might be to try killing the subshell more aggressively, either
using SIGKILL, or looping on kill/wait. But that seems complex and
likely to introduce new problems/races. Instead, we can observe that the
writer is not needed at all. Git will notice the pipe via stat() before
it is ever opened. So we can simply drop the writer subshell entirely.

If we ever changed Git to open the path and fstat() it, this would
result in the test hanging. But we're not likely to do that. After all,
we have to stat() paths to see if they are openable at all (e.g., it
could be a directory), so this seems like a low risk. And anybody who
does make such a change will immediately see the issue, as Git would
hang consistently.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-08-13 16:30:36 -07:00
.github ci: drop linux-clang job 2023-06-03 10:35:13 +09:00
block-sha1
builtin Merge branch 'tb/collect-pack-filenames-fix' 2023-06-26 09:29:50 -07:00
ci Merge branch 'tb/pack-bitmap-traversal-with-boundary' 2023-06-22 16:29:05 -07:00
compat fsmonitor: reduce includes of cache.h 2023-04-24 12:47:33 -07:00
contrib Merge branch 'pb/complete-and-document-auto-merge-and-friends' 2023-06-20 15:53:12 -07:00
Documentation The fifth batch 2023-06-26 09:29:50 -07:00
ewah alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
git-gui
gitk-git Merge gitk changes into js/gitk-fixes-from-gfw 2023-05-08 09:16:57 -07:00
gitweb
mergetools
negotiator Merge branch 'hx/negotiator-non-recursive' 2023-05-10 10:23:28 -07:00
oss-fuzz treewide: ensure one of the appropriate headers is sourced first 2023-02-23 17:25:28 -08:00
perl
po l10n: zh_TW.po: Git 2.41.0 2023-06-01 00:53:09 +08:00
refs Merge branch 'jc/pack-ref-exclude-include' 2023-06-13 12:29:45 -07:00
reftable reftable: ensure git-compat-util.h is the first (indirect) include 2023-04-24 12:47:33 -07:00
sha1collisiondetection@855827c583
sha1dc
sha256
t t4053: avoid writing to unopened pipe 2023-08-13 16:30:36 -07:00
templates send-email: export patch counters in validate environment 2023-04-14 10:41:15 -07:00
trace2 hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
xdiff xdiff: mark unused parameter in xdl_call_hunk_func() 2022-12-13 22:16:23 +09:00
.cirrus.yml
.clang-format
.editorconfig
.gitattributes .gitattributes: include text attribute for eol attributes 2023-02-06 13:57:08 -08:00
.gitignore add: remove "add.interactive.useBuiltin" & Perl "git add--interactive" 2023-02-06 15:03:34 -08:00
.gitmodules
.mailmap mailmap: change primary address for Emily Shaffer 2023-04-07 14:33:52 -07:00
.tsan-suppressions
abspath.c abspath.h: move absolute path functions from cache.h 2023-03-21 10:56:52 -07:00
abspath.h abspath.h: move absolute path functions from cache.h 2023-03-21 10:56:52 -07:00
aclocal.m4
add-interactive.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
add-interactive.h
add-patch.c editor: move editor-related functions and declarations into common file 2023-04-11 08:52:10 -07:00
advice.c worktree add: introduce "try --orphan" hint 2023-05-17 15:55:24 -07:00
advice.h worktree add: introduce "try --orphan" hint 2023-05-17 15:55:24 -07:00
alias.c rebase -m: fix serialization of strategy options 2023-04-10 09:53:19 -07:00
alias.h rebase -m: fix serialization of strategy options 2023-04-10 09:53:19 -07:00
alloc.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
alloc.h alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
apply.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
apply.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
archive-tar.c git-zlib: move declarations for git-zlib functions from cache.h 2023-04-11 08:52:10 -07:00
archive-zip.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
archive.c Merge branch 'jc/attr-source-tree' 2023-05-17 10:11:41 -07:00
archive.h treewide: reduce includes of cache.h in other headers 2023-04-11 08:52:11 -07:00
attr.c Merge branch 'jc/attr-source-tree' 2023-05-17 10:11:41 -07:00
attr.h attr: teach "--attr-source=<tree>" global option to "git" 2023-05-06 14:34:09 -07:00
banned.h banned.h: mark strtok() and strtok_r() as banned 2023-04-27 08:51:11 -07:00
base85.c base85.h: move declarations for base85.c functions from cache.h 2023-04-24 12:47:32 -07:00
base85.h base85.h: move declarations for base85.c functions from cache.h 2023-04-24 12:47:32 -07:00
bisect.c treewide: remove cache.h inclusion due to object.h changes 2023-04-11 08:52:10 -07:00
bisect.h
blame.c Merge branch 'jk/blame-fake-commit-label' 2023-05-02 10:13:35 -07:00
blame.h object.h: stop depending on cache.h; make cache.h depend on object.h 2023-02-23 17:25:29 -08:00
blob.c object.h: stop depending on cache.h; make cache.h depend on object.h 2023-02-23 17:25:29 -08:00
blob.h blob: drop unused parts of parse_blob_buffer() 2022-12-13 22:16:22 +09:00
bloom.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
bloom.h
branch.c branch: fix a leak in setup_tracking 2023-06-17 09:02:47 -07:00
branch.h branch: test for failures while renaming branches 2023-03-27 09:40:14 -07:00
builtin.h builtins: annotate always-empty prefix parameters 2023-03-28 14:11:24 -07:00
bulk-checkin.c treewide: remove double forward declaration of read_in_full 2023-04-11 08:52:11 -07:00
bulk-checkin.h treewide: remove unnecessary cache.h inclusion from a few headers 2023-03-21 10:56:50 -07:00
bundle-uri.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
bundle-uri.h clone: set fetch.bundleURI if appropriate 2023-01-31 08:57:48 -08:00
bundle.c treewide: remove cache.h inclusion due to object.h changes 2023-04-11 08:52:10 -07:00
bundle.h treewide: remove unnecessary cache.h inclusion from a few headers 2023-03-21 10:56:50 -07:00
cache-tree.c object-file.h: move declarations for object-file.c functions from cache.h 2023-04-11 08:52:10 -07:00
cache-tree.h object.h: stop depending on cache.h; make cache.h depend on object.h 2023-02-23 17:25:29 -08:00
cache.h cache.h: remove unnecessary headers 2023-04-24 12:47:33 -07:00
cbtree.c treewide: ensure one of the appropriate headers is sourced first 2023-02-23 17:25:28 -08:00
cbtree.h treewide: remove unnecessary git-compat-util.h includes in headers 2023-02-23 17:25:28 -08:00
chdir-notify.c treewide: reduce includes of cache.h in other headers 2023-04-11 08:52:11 -07:00
chdir-notify.h
check-builtins.sh
checkout.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
checkout.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
chunk-format.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
chunk-format.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
CODE_OF_CONDUCT.md
color.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
color.h
column.c treewide: remove cache.h inclusion due to pager.h changes 2023-04-11 08:52:11 -07:00
column.h
combine-diff.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
command-list.txt
commit-graph.c Merge branch 'ds/disable-replace-refs' 2023-06-22 16:29:06 -07:00
commit-graph.h Merge branch 'ds/ahead-behind' 2023-04-06 13:38:21 -07:00
commit-reach.c Merge branch 'mh/commit-reach-get-reachable-plug-leak' 2023-06-20 15:53:11 -07:00
commit-reach.h Merge branch 'ab/remove-implicit-use-of-the-repository' 2023-04-06 13:38:30 -07:00
commit-slab-decl.h
commit-slab-impl.h treewide: remove unnecessary git-compat-util.h includes in headers 2023-02-23 17:25:28 -08:00
commit-slab.h
commit.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
commit.h commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
common-main.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
config.c Merge branch 'rj/leakfixes' 2023-06-23 11:21:17 -07:00
config.h config: pass 'repo' directly to 'config_with_options()' 2023-05-26 13:53:40 +09:00
config.mak.dev
config.mak.in
config.mak.uname Merge branch 'hj/remove-msys-support' 2023-02-09 14:40:47 -08:00
configure.ac
connect.c Merge branch 'jk/protocol-cap-parse-fix' 2023-04-25 13:56:20 -07:00
connect.h v0 protocol: use size_t for capability length/offset 2023-04-14 15:08:13 -07:00
connected.c Merge branch 'en/header-split-cleanup' 2023-04-06 13:38:31 -07:00
connected.h
convert.c Merge branch 'jc/attr-source-tree' 2023-05-17 10:11:41 -07:00
convert.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
copy.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
copy.h copy.h: move declarations for copy.c functions from cache.h 2023-04-24 12:47:31 -07:00
COPYING
credential.c credential: avoid erasing distinct password 2023-06-15 13:26:39 -07:00
credential.h credential: avoid erasing distinct password 2023-06-15 13:26:39 -07:00
csum-file.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
csum-file.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
ctype.c
daemon.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
date.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
date.h date: remove approxidate_relative() 2023-04-10 08:46:40 -07:00
decorate.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
decorate.h
delta-islands.c treewide: remove cache.h inclusion due to object.h changes 2023-04-11 08:52:10 -07:00
delta-islands.h delta-islands: free island_marks and bitmaps 2023-02-03 18:01:46 -08:00
delta.h
detect-compiler Handle some compiler versions containing a dash 2023-04-26 09:20:50 -07:00
diagnose.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
diagnose.h treewide: remove unnecessary inclusions of parse-options.h from headers 2023-03-20 11:55:18 -07:00
diff-delta.c
diff-lib.c diff-lib: honor override_submodule_config flag bit 2023-06-14 11:28:12 -07:00
diff-merges.c object.h: stop depending on cache.h; make cache.h depend on object.h 2023-02-23 17:25:29 -08:00
diff-merges.h
diff-no-index.c diff --no-index: support reading from named pipes 2023-07-05 14:00:28 -07:00
diff.c Merge branch 'jk/log-follow-with-non-literal-pathspec' 2023-06-20 15:53:13 -07:00
diff.h Merge branch 'jk/log-follow-with-non-literal-pathspec' 2023-06-20 15:53:13 -07:00
diffcore-break.c cocci: apply the "promisor-remote.h" part of "the_repository.pending" 2023-03-28 07:36:46 -07:00
diffcore-delta.c object.h: stop depending on cache.h; make cache.h depend on object.h 2023-02-23 17:25:29 -08:00
diffcore-order.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
diffcore-pickaxe.c pretty.h: move has_non_ascii() declaration from commit.h 2023-02-23 17:25:29 -08:00
diffcore-rename.c Merge branch 'ab/remove-implicit-use-of-the-repository' 2023-04-06 13:38:30 -07:00
diffcore-rotate.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
diffcore.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
dir-iterator.c Merge branch 'en/header-cleanup' 2023-03-17 14:03:09 -07:00
dir-iterator.h dir-iterator: drop unused DIR_ITERATOR_FOLLOW_SYMLINKS 2023-02-16 16:21:56 -08:00
dir.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
dir.h statinfo.h: move DTYPE defines from dir.h 2023-06-12 10:59:01 -07:00
editor.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
editor.h editor: move editor-related functions and declarations into common file 2023-04-11 08:52:10 -07:00
entry.c symlinks.h: move declarations for symlinks.c functions from cache.h 2023-04-24 12:47:31 -07:00
entry.h treewide: remove unnecessary cache.h includes 2023-02-23 17:25:28 -08:00
environment.c Merge branch 'ds/disable-replace-refs' 2023-06-22 16:29:06 -07:00
environment.h repository: move 'repository_format_worktree_config' to repo scope 2023-05-26 13:53:41 +09:00
exec-cmd.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
exec-cmd.h
fetch-negotiator.c
fetch-negotiator.h
fetch-pack.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
fetch-pack.h
fmt-merge-msg.c treewide: remove cache.h inclusion due to object-name.h changes 2023-04-11 08:52:09 -07:00
fmt-merge-msg.h
fsck.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
fsck.h object.h: stop depending on cache.h; make cache.h depend on object.h 2023-02-23 17:25:29 -08:00
fsmonitor--daemon.h fsmonitor: reduce includes of cache.h 2023-04-24 12:47:33 -07:00
fsmonitor-ipc.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
fsmonitor-ipc.h
fsmonitor-path-utils.h
fsmonitor-settings.c alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
fsmonitor-settings.h
fsmonitor.c treewide: be explicit about dependence on trace.h & trace2.h 2023-04-11 08:52:08 -07:00
fsmonitor.h Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
generate-cmdlist.sh
generate-configlist.sh
generate-hooklist.sh
gettext.c Sync with Git 2.40.1 2023-04-24 22:31:32 -07:00
gettext.h Sync with 2.33.8 2023-04-17 21:15:56 +02:00
git-archimport.perl
git-compat-util.h Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
git-curl-compat.h http: support CURLOPT_PROTOCOLS_STR 2023-02-06 09:27:09 +01:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh mergetool: new config guiDefault supports auto-toggling gui by DISPLAY 2023-04-05 21:03:29 -07:00
git-filter-branch.sh
git-instaweb.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh mergetool: new config guiDefault supports auto-toggling gui by DISPLAY 2023-04-05 21:03:29 -07:00
git-mergetool.sh mergetool: new config guiDefault supports auto-toggling gui by DISPLAY 2023-04-05 21:03:29 -07:00
git-p4.py
git-quiltimport.sh
git-request-pull.sh request-pull: filter out SSH/X.509 tag signatures 2023-01-25 15:54:41 -08:00
git-send-email.perl Merge branch 'jc/send-email-pre-process-fix' 2023-05-19 09:27:06 -07:00
git-sh-i18n.sh
git-sh-setup.sh
git-submodule.sh Merge branch 'ss/pull-v-recurse-fix' 2022-12-28 12:06:17 +09:00
git-svn.perl
GIT-VERSION-GEN Start the 2.42 cycle 2023-06-13 12:29:46 -07:00
git-web--browse.sh
git-zlib.c git-zlib: move declarations for git-zlib functions from cache.h 2023-04-11 08:52:10 -07:00
git-zlib.h git-zlib: move declarations for git-zlib functions from cache.h 2023-04-11 08:52:10 -07:00
git.c Merge branch 'ds/disable-replace-refs' 2023-06-22 16:29:06 -07:00
git.rc
gpg-interface.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
gpg-interface.h gpg-interface: lazily initialize and read the configuration 2023-02-09 17:01:27 -08:00
graph.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
graph.h
grep.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
grep.h grep: work around UTF-8 related JIT bug in PCRE2 <= 10.34 2023-03-23 11:19:34 -07:00
hash-ll.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
hash-lookup.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
hash-lookup.h
hash.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
hashmap.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
hashmap.h Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
help.c Merge branch 'jk/unused-post-2.39-part2' 2023-03-17 14:03:09 -07:00
help.h
hex.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
hex.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
hook.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
hook.h hook API: support passing stdin to hooks, convert am's 'post-rewrite' 2023-02-08 12:50:03 -08:00
http-backend.c treewide: remove cache.h inclusion due to git-zlib changes 2023-04-11 08:52:10 -07:00
http-fetch.c treewide: remove cache.h inclusion due to object-file.h changes 2023-04-11 08:52:10 -07:00
http-push.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
http-walker.c Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
http.c Merge branch 'jk/redact-h2h3-headers-fix' into maint-2.41 2023-06-24 15:04:48 -07:00
http.h Sync with 2.30.9 2023-04-17 21:15:44 +02:00
ident.c ident.h: move ident-related declarations out of cache.h 2023-02-23 17:25:29 -08:00
ident.h ident.h: move ident-related declarations out of cache.h 2023-02-23 17:25:29 -08:00
imap-send.c imap-send: include strbuf.h 2023-05-17 09:54:07 -07:00
INSTALL Sync with 2.31.8 2023-04-17 21:15:49 +02:00
iterator.h
json-writer.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
json-writer.h
khash.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
kwset.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
kwset.h
levenshtein.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
levenshtein.h
LGPL-2.1
line-log.c diff.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
line-log.h hash.h: move some oid-related declarations from cache.h 2023-02-23 17:25:28 -08:00
line-range.c line-range: fix infinite loop bug with '$' regex 2022-12-20 10:00:43 +09:00
line-range.h
linear-assignment.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
linear-assignment.h
list-objects-filter-options.c Merge branch 'ab/remove-implicit-use-of-the-repository' 2023-04-06 13:38:30 -07:00
list-objects-filter-options.h Merge branch 'en/header-split-cleanup' 2023-04-06 13:38:31 -07:00
list-objects-filter.c treewide: remove cache.h inclusion due to object.h changes 2023-04-11 08:52:10 -07:00
list-objects-filter.h
list-objects.c treewide: remove cache.h inclusion due to object.h changes 2023-04-11 08:52:10 -07:00
list-objects.h
list.h
ll-merge.c Merge branch 'jc/attr-source-tree' 2023-05-17 10:11:41 -07:00
ll-merge.h
lockfile.c treewide: remove unnecessary includes of cache.h 2023-03-21 10:56:53 -07:00
lockfile.h
log-tree.c Merge branch 'ds/disable-replace-refs' 2023-06-22 16:29:06 -07:00
log-tree.h
ls-refs.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
ls-refs.h
mailinfo.c Merge branch 'jc/spell-id-in-both-caps-in-message-id' 2023-04-11 13:49:12 -07:00
mailinfo.h
mailmap.c Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
mailmap.h mailmap, quote: move declarations of global vars to correct unit 2023-04-11 08:52:11 -07:00
Makefile Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
match-trees.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
match-trees.h match-trees.h: move declarations for match-trees.c functions from cache.h 2023-04-24 12:47:32 -07:00
mem-pool.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
mem-pool.h
merge-blobs.c Merge branch 'ab/remove-implicit-use-of-the-repository' 2023-04-06 13:38:30 -07:00
merge-blobs.h
merge-ort-wrappers.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
merge-ort-wrappers.h
merge-ort.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
merge-ort.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
merge-recursive.c match-trees.h: move declarations for match-trees.c functions from cache.h 2023-04-24 12:47:32 -07:00
merge-recursive.h
merge.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
mergesort.h
midx.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
midx.h
name-hash.c treewide: be explicit about dependence on trace.h & trace2.h 2023-04-11 08:52:08 -07:00
notes-cache.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
notes-cache.h
notes-merge.c treewide: remove cache.h inclusion due to object-file.h changes 2023-04-11 08:52:10 -07:00
notes-merge.h
notes-utils.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
notes-utils.h
notes.c Merge branch 'tb/ban-strtok' 2023-05-02 10:13:35 -07:00
notes.h notes: move the documentation to the struct 2023-06-06 09:35:05 +09:00
object-file.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
object-file.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
object-name.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
object-name.h object-name.h: move declarations for object-name.c functions from cache.h 2023-04-11 08:52:09 -07:00
object-store.h Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
object.c object: add object_array initializer helper function 2023-05-08 12:05:55 -07:00
object.h Merge branch 'tb/pack-bitmap-traversal-with-boundary' 2023-06-22 16:29:05 -07:00
oid-array.c alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
oid-array.h
oidmap.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
oidmap.h treewide: remove unnecessary cache.h includes 2023-02-23 17:25:28 -08:00
oidset.c hex.h: move some hex-related declarations from cache.h 2023-02-23 17:25:28 -08:00
oidset.h
oidtree.c treewide: ensure one of the appropriate headers is sourced first 2023-02-23 17:25:28 -08:00
oidtree.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
pack-bitmap-write.c diff.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
pack-bitmap.c Merge branch 'tb/open-midx-bitmap-fallback' 2023-06-23 11:21:17 -07:00
pack-bitmap.h Merge branch 'tb/pack-bitmap-traversal-with-boundary' 2023-06-22 16:29:05 -07:00
pack-check.c treewide: remove cache.h inclusion due to object-file.h changes 2023-04-11 08:52:10 -07:00
pack-mtimes.c treewide: remove cache.h inclusion due to object-file.h changes 2023-04-11 08:52:10 -07:00
pack-mtimes.h treewide: remove unnecessary git-compat-util.h includes in headers 2023-02-23 17:25:28 -08:00
pack-objects.c alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
pack-objects.h
pack-revindex.c Merge branch 'ds/fsck-pack-revindex' 2023-04-27 16:00:59 -07:00
pack-revindex.h fsck: validate .rev file header 2023-04-17 14:39:05 -07:00
pack-write.c Merge branch 'tb/enable-cruft-packs-by-default' 2023-04-28 16:03:03 -07:00
pack.h csum-file.h: remove unnecessary inclusion of cache.h 2023-03-21 10:56:55 -07:00
packfile.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
packfile.h packfile.h: move pack_window and pack_entry from cache.h 2023-04-24 12:47:31 -07:00
pager.c treewide: remove cache.h inclusion due to pager.h changes 2023-04-11 08:52:11 -07:00
pager.h pager.h: move declarations for pager.c functions from cache.h 2023-04-11 08:52:10 -07:00
parallel-checkout.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
parallel-checkout.h
parse-options-cb.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
parse-options.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
parse-options.h Merge branch 'pw/rebase-cleanup-merge-strategy-option-handling' 2023-04-17 18:05:13 -07:00
patch-delta.c
patch-ids.c treewide: remove unnecessary cache.h inclusion from several sources 2023-03-21 10:56:51 -07:00
patch-ids.h
path.c treewide: remove double forward declaration of read_in_full 2023-04-11 08:52:11 -07:00
path.h path.h: move function declarations for path.c functions from cache.h 2023-03-21 10:56:52 -07:00
pathspec.c Merge branch 'jk/log-follow-with-non-literal-pathspec' 2023-06-20 15:53:13 -07:00
pathspec.h Merge branch 'jk/log-follow-with-non-literal-pathspec' 2023-06-20 15:53:13 -07:00
pkt-line.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
pkt-line.h pkt-line.h: move declarations for pkt-line.c functions from cache.h 2023-04-24 12:47:32 -07:00
preload-index.c symlinks.h: move declarations for symlinks.c functions from cache.h 2023-04-24 12:47:31 -07:00
pretty.c treewide: remove cache.h inclusion due to pager.h changes 2023-04-11 08:52:11 -07:00
pretty.h Merge branch 'ab/remove-implicit-use-of-the-repository' 2023-04-06 13:38:30 -07:00
prio-queue.c alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
prio-queue.h
progress.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
progress.h
promisor-remote.c treewide: remove unnecessary cache.h inclusion 2023-04-11 08:52:09 -07:00
promisor-remote.h cocci: apply the "promisor-remote.h" part of "the_repository.pending" 2023-03-28 07:36:46 -07:00
prompt.c treewide: remove cache.h inclusion due to environment.h changes 2023-03-21 10:56:54 -07:00
prompt.h
protocol-caps.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
protocol-caps.h
protocol.c treewide: remove unnecessary cache.h inclusion 2023-04-11 08:52:09 -07:00
protocol.h protocol.h: move definition of DEFAULT_GIT_PORT from cache.h 2023-04-18 14:01:04 -07:00
prune-packed.c treewide: remove cache.h inclusion due to environment.h changes 2023-03-21 10:56:54 -07:00
prune-packed.h
quote.c treewide: reduce includes of cache.h in other headers 2023-04-11 08:52:11 -07:00
quote.h mailmap, quote: move declarations of global vars to correct unit 2023-04-11 08:52:11 -07:00
range-diff.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
range-diff.h
reachable.c gc: introduce gc.recentObjectsHook 2023-06-12 14:12:20 -07:00
reachable.h
read-cache.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
README.md
rebase-interactive.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
rebase-interactive.h
rebase.c treewide: ensure one of the appropriate headers is sourced first 2023-02-23 17:25:28 -08:00
rebase.h
ref-filter.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
ref-filter.h Merge branch 'ow/ref-format-remove-unused-member' 2023-04-06 13:38:32 -07:00
reflog-walk.c alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
reflog-walk.h treewide: remove unnecessary cache.h includes 2023-02-23 17:25:28 -08:00
reflog.c diff.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
reflog.h
refs.c pack-refs: teach --exclude option to exclude refs from being packed 2023-05-12 14:54:14 -07:00
refs.h pack-refs: teach pack-refs --include option 2023-05-12 14:54:14 -07:00
refspec.c commit.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
refspec.h
RelNotes Start the 2.42 cycle 2023-06-13 12:29:46 -07:00
remote-curl.c Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
remote.c remote: fix a leak in query_matches_negative_refspec 2023-06-12 15:04:28 -07:00
remote.h Merge branch 'sg/parse-options-h-users' 2023-03-30 13:47:11 -07:00
replace-object.c repository: create read_replace_refs setting 2023-06-12 13:34:55 -07:00
replace-object.h repository: create read_replace_refs setting 2023-06-12 13:34:55 -07:00
repo-settings.c repository: create read_replace_refs setting 2023-06-12 13:34:55 -07:00
repository.c repository: move 'repository_format_worktree_config' to repo scope 2023-05-26 13:53:41 +09:00
repository.h Merge branch 'ds/disable-replace-refs' 2023-06-22 16:29:06 -07:00
rerere.c copy.h: move declarations for copy.c functions from cache.h 2023-04-24 12:47:31 -07:00
rerere.h Merge branch 'en/header-split-cleanup' 2023-04-06 13:38:31 -07:00
reset.c object-name.h: move declarations for object-name.c functions from cache.h 2023-04-11 08:52:09 -07:00
reset.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
resolve-undo.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
resolve-undo.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
revision.c Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
revision.h Merge branch 'jc/pack-ref-exclude-include' 2023-06-13 12:29:45 -07:00
run-command.c Merge branch 'rs/run-command-exec-error-on-noent' 2023-06-23 11:21:16 -07:00
run-command.h
scalar.c Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
SECURITY.md
send-pack.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
send-pack.h
sequencer.c Merge branch 'js/rebase-count-fixes' 2023-05-20 05:35:57 +09:00
sequencer.h rebase -m: cleanup --strategy-option handling 2023-04-10 09:53:19 -07:00
serve.c Merge branch 'jk/unused-post-2.39-part2' 2023-03-17 14:03:09 -07:00
serve.h
server-info.c server-info.h: move declarations for server-info.c functions from cache.h 2023-04-24 12:47:31 -07:00
server-info.h server-info.h: move declarations for server-info.c functions from cache.h 2023-04-24 12:47:31 -07:00
setup.c Merge branch 'gc/discover-not-setup' 2023-06-23 11:21:16 -07:00
setup.h setup.h: move declarations for setup.c functions from cache.h 2023-03-21 10:56:54 -07:00
sh-i18n--envsubst.c
sha1dc_git.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
sha1dc_git.h
shallow.c treewide: be explicit about dependence on trace.h & trace2.h 2023-04-11 08:52:08 -07:00
shallow.h object.h: stop depending on cache.h; make cache.h depend on object.h 2023-02-23 17:25:29 -08:00
shared.mak
shell.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
shortlog.h
sideband.c treewide: remove cache.h inclusion due to editor.h changes 2023-04-11 08:52:10 -07:00
sideband.h
sigchain.c alloc.h: move ALLOC_GROW() functions from cache.h 2023-02-23 17:25:28 -08:00
sigchain.h
simple-ipc.h
sparse-index.c environment.h: move declarations for environment.c functions from cache.h 2023-03-21 10:56:53 -07:00
sparse-index.h
split-index.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
split-index.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
stable-qsort.c
statinfo.h statinfo.h: move DTYPE defines from dir.h 2023-06-12 10:59:01 -07:00
strbuf.c strbuf: provide CRLF-aware helper to read until a specified delimiter 2023-06-12 13:23:24 -07:00
strbuf.h strbuf: provide CRLF-aware helper to read until a specified delimiter 2023-06-12 13:23:24 -07:00
streaming.c treewide: remove cache.h inclusion due to object-file.h changes 2023-04-11 08:52:10 -07:00
streaming.h treewide: remove unnecessary cache.h inclusion from a few headers 2023-03-21 10:56:50 -07:00
string-list.c string-list: introduce string_list_setlen() 2023-04-24 16:01:28 -07:00
string-list.h string-list: introduce string_list_setlen() 2023-04-24 16:01:28 -07:00
strmap.c
strmap.h
strvec.c cache.h: remove dependence on hex.h; make other files include it explicitly 2023-02-23 17:25:29 -08:00
strvec.h
sub-process.c treewide: ensure one of the appropriate headers is sourced first 2023-02-23 17:25:28 -08:00
sub-process.h treewide: remove unnecessary git-compat-util.h includes in headers 2023-02-23 17:25:28 -08:00
submodule-config.c config: pass 'repo' directly to 'config_with_options()' 2023-05-26 13:53:40 +09:00
submodule-config.h hash.h: move some oid-related declarations from cache.h 2023-02-23 17:25:28 -08:00
submodule.c Merge branch 'en/header-split-cache-h' 2023-04-25 13:56:20 -07:00
submodule.h read-tree: add "--super-prefix" option, eliminate global 2022-12-26 10:21:44 +09:00
symlinks.c symlinks.h: move declarations for symlinks.c functions from cache.h 2023-04-24 12:47:31 -07:00
symlinks.h symlinks.h: move declarations for symlinks.c functions from cache.h 2023-04-24 12:47:31 -07:00
tag.c treewide: remove cache.h inclusion due to object.h changes 2023-04-11 08:52:10 -07:00
tag.h
tar.h
tempfile.c treewide: remove unnecessary includes of cache.h 2023-03-21 10:56:53 -07:00
tempfile.h
thread-utils.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
thread-utils.h
tmp-objdir.c treewide: remove cache.h inclusion due to object-file.h changes 2023-04-11 08:52:10 -07:00
tmp-objdir.h
trace.c treewide: remove unnecessary cache.h inclusion 2023-04-11 08:52:09 -07:00
trace.h Merge branch 'en/header-cleanup' 2023-03-17 14:03:09 -07:00
trace2.c hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
trace2.h
trailer.c treewide: remove cache.h inclusion due to environment.h changes 2023-03-21 10:56:54 -07:00
trailer.h
transport-helper.c treewide: remove cache.h inclusion due to object-name.h changes 2023-04-11 08:52:09 -07:00
transport-internal.h clone: request the 'bundle-uri' command when available 2022-12-25 16:24:23 +09:00
transport.c Merge branch 'jk/protocol-cap-parse-fix' 2023-04-25 13:56:20 -07:00
transport.h treewide: remove unnecessary cache.h inclusion from a few headers 2023-03-21 10:56:50 -07:00
tree-diff.c diff.h: reduce unnecessary includes 2023-04-24 12:47:33 -07:00
tree-walk.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
tree-walk.h hash-ll.h: split out of hash.h to remove dependency on repository.h 2023-04-24 12:47:32 -07:00
tree.c treewide: remove cache.h inclusion due to previous changes 2023-04-24 12:47:33 -07:00
tree.h cache,tree: move basic name compare functions from read-cache to tree 2023-04-24 12:47:32 -07:00
unicode-width.h unicode: update the width tables to Unicode 15 2023-03-30 13:06:12 -07:00
unimplemented.sh
unix-socket.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
unix-socket.h
unix-stream-server.c treewide: remove unnecessary cache.h includes in source files 2023-02-23 17:25:28 -08:00
unix-stream-server.h
unpack-trees.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
unpack-trees.h treewide: be explicit about dependence on convert.h 2023-04-11 08:52:09 -07:00
upload-pack.c upload-pack: advertise capabilities when cloning empty repos 2023-05-17 13:22:46 -07:00
upload-pack.h
url.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
url.h
urlmatch.c treewide: replace cache.h with more direct headers, where possible 2023-02-23 17:25:30 -08:00
urlmatch.h
usage.c treewide: remove unnecessary includes of cache.h 2023-03-21 10:56:53 -07:00
userdiff.c attr: teach "--attr-source=<tree>" global option to "git" 2023-05-06 14:34:09 -07:00
userdiff.h Merge branch 'rs/userdiff-multibyte-regex' 2023-04-20 14:33:35 -07:00
utf8.c Sync with Git 2.31.6 2022-12-13 21:09:40 +09:00
utf8.h Sync with Git 2.31.6 2022-12-13 21:09:40 +09:00
varint.c
varint.h
version.c
version.h
versioncmp.c Merge branch 'en/header-split-cache-h-part-2' 2023-05-09 16:45:46 -07:00
versioncmp.h versioncmp.h: move declarations for versioncmp.c functions from cache.h 2023-04-24 12:47:32 -07:00
walker.c treewide: remove cache.h inclusion due to object.h changes 2023-04-11 08:52:10 -07:00
walker.h
wildmatch.c Merge branch 'pw/wildmatch-fixes' 2023-04-04 14:28:27 -07:00
wildmatch.h wildmatch: hide internal return values 2023-03-20 10:58:53 -07:00
worktree.c repository: move 'repository_format_worktree_config' to repo scope 2023-05-26 13:53:41 +09:00
worktree.h Merge branch 'rj/avoid-switching-to-already-used-branch' 2023-03-19 15:03:11 -07:00
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README.md

Build status

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-<commandname>.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission and Documentation/CodingGuidelines).

Those wishing to help with error message, usage and informational message string translations (localization l10) should see po/README.md (a po file is a Portable Object file that holds the translations).

To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org (not the Git list). The mailing list archives are available at https://lore.kernel.org/git/, http://marc.info/?l=git and other archival sites.

Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

  • random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
  • stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
  • "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
  • "goddamn idiotic truckload of sh*t": when it breaks