24274 Commits

Author SHA1 Message Date
Junio C Hamano
a37bb2ae6c Merge branch 'jk/test-curl-updates'
Update HTTP tests to adjust for changes in curl 8.18.0

* jk/test-curl-updates:
  t5563: add missing end-of-line in HTTP header
  t5551: handle trailing slashes in expected cookies output
2025-12-30 12:58:22 +09:00
Junio C Hamano
a194cdc8f3 Merge branch 'js/test-func-comment-fix'
Comment fix.

* js/test-func-comment-fix:
  test_detect_ref_format: fix comment
2025-12-30 12:58:21 +09:00
Junio C Hamano
4a8ee50c77 Merge branch 'ps/repack-avoid-noop-midx-rewrite'
Even when there is no changes in the packfile and no need to
recompute bitmaps, "git repack" recomputed and updated the MIDX
file, which has been corrected.

* ps/repack-avoid-noop-midx-rewrite:
  midx-write: skip rewriting MIDX with `--stdin-packs` unless needed
  midx-write: extract function to test whether MIDX needs updating
  midx: fix `BUG()` when getting preferred pack without a reverse index
2025-12-30 12:58:19 +09:00
Junio C Hamano
d8e9716b91 Merge branch 'js/test-symlink-windows'
Prepare test suite for Git for Windows that supports symbolic
links.

* js/test-symlink-windows:
  t7800: work around the MSYS path conversion on Windows
  t6423: introduce Windows-specific handling for symlinking to /dev/null
  t1305: skip symlink tests that do not apply to Windows
  t1006: accommodate for symlink support in MSYS2
  t0600: fix incomplete prerequisite for a test case
  t0301: another fix for Windows compatibility
  t0001: handle `diff --no-index` gracefully
  mingw: special-case `open(symlink, O_CREAT | O_EXCL)`
  apply: symbolic links lack a "trustable executable bit"
  t9700: accommodate for Windows paths
2025-12-30 12:58:19 +09:00
Junio C Hamano
02e9bc3392 Merge branch 'jt/repo-struct-more-objinfo'
More object database related information are shown in "git repo
structure" output.

* jt/repo-struct-more-objinfo:
  builtin/repo: add object disk size info to structure table
  builtin/repo: add disk size info to keyvalue stucture output
  builtin/repo: add inflated object info to structure table
  builtin/repo: add inflated object info to keyvalue structure output
  builtin/repo: humanise count values in structure output
  strbuf: split out logic to humanise byte values
  builtin/repo: group per-type object values into struct
2025-12-30 12:58:19 +09:00
Junio C Hamano
d8000781eb Merge branch 'kn/fix-fetch-backfill-tag-with-batched-ref-updates'
"git fetch" that involves fetching tags, when a tag being fetched
needs to overwrite existing one, failed to fetch other tags, which
has been corrected.

* kn/fix-fetch-backfill-tag-with-batched-ref-updates:
  fetch: fix failed batched updates skipping operations
  fetch: fix non-conflicting tags not being committed
  fetch: extract out reference committing logic
2025-12-23 11:33:17 +09:00
Junio C Hamano
5d2be7425c Merge branch 'rs/diff-files-r-find-copies-fix'
"git diff-files -R --find-copies-harder" has been taught to use
the potential copy sources from the index correctly.

* rs/diff-files-r-find-copies-fix:
  diff-files: fix copy detection
2025-12-23 11:33:16 +09:00
Junio C Hamano
00bf98b16e Merge branch 'jc/submodule-add'
"git submodule add" to add a submodule under <name> segfaulted,
when a submodule.<name>.something is already in .gitmodules file
without defining where its submodule.<name>.path is, which has been
corrected.

* jc/submodule-add:
  submodule add: sanity check existing .gitmodules
2025-12-23 11:33:15 +09:00
Junio C Hamano
f0c063b67c Merge branch 'ds/doc-scalar-config'
Documentation updates.

* ds/doc-scalar-config:
  scalar: document config settings
  scalar: alphabetize and simplify config
  scalar: remove stale config values
  scalar: use index.skipHash=true for performance
  scalar: annotate config file with "set by scalar"
2025-12-23 11:33:15 +09:00
Junio C Hamano
e72259073d Merge branch 'rs/t4014-git-version-string-fix'
Test fix.

* rs/t4014-git-version-string-fix:
  t4014: support Git version strings with spaces
2025-12-22 14:57:49 +09:00
Johannes Schindelin
949df6ed6b test_detect_ref_format: fix comment
When 58aaf59133b (t: introduce GIT_TEST_DEFAULT_REF_FORMAT envvar,
2023-12-29) copy-edited the `test_detect_hash` function, the code
comment was accidentally left unchanged. Let's adjust it.

Noticed-by: Matthew John Cheetham <mjcheetham@outlook.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-19 12:49:51 +09:00
Jeff King
17f4b01da7 t5563: add missing end-of-line in HTTP header
In t5563, we test how various oddly-formatted WWW-Authenticate headers
are passed through curl to git's credential subsystem (and ultimately
out to credential helpers). One test, "access using basic auth with
wwwauth header mixed line-endings" does something odd. It does not mix
line endings at all (which must be CRLF according to the RFC anyway),
but omits the line ending entirely for the final header!

This means that the server produces an incomplete response. We send our
final header, and then the newline which is meant to mark the end of
headers (and the start of the body) becomes the line ending for that
header. And there is no header/body separator in the output at all.

Looking at strace, this is what the client reads:

  recvfrom(9, "WWW-Authenticate: FooBar param1=\"value1\"\r\n \r\n\tparam2=\"value2\"\r\nWWW-Authenticate: Basic realm=\"example.com\"", 16384, 0, NULL, NULL) = 106
  recvfrom(9, "\n", 16384, 0, NULL, NULL) = 1
  recvfrom(9, "", 16384, 0, NULL, NULL) = 0

The headers themselves are produced from the custom-auth.challenge file
we write in the test (which is missing the final CRLF), and then the
header/body separator comes from our lib-httpd/nph-custom-auth.sh CGI.
(Ignore for a moment that it is producing a bare newline, which I think
is a bug; it should be a CRLF but curl is happy with either).

Older versions of curl seemed to be OK with the truncated output, but
the upcoming 8.18.0 release seems to get confused. Specifically, since
67ae101666 (http: unfold response headers earlier, 2025-12-12) our
request to the server fails with insufficient credentials. I traced far
enough to see that curl does relay the header back to us, which we then
pass to a credential helper, which gives us the correct
username/password combination. But on our followup request, curl refuses
to send the Authorization header (and so gets an HTTP 401 again).

The change in curl's behavior is a bit unexpected, but since we are
sending it garbage, it is hard to complain too much. Let's add the
missing CRLF to the header. I _think_ this was just an oversight and not
the intent of the test. And that the "mixed line-endings" really meant
"mixed continuations", since we differ from the previous test in
continuing with both space and tab. So I've likewise updated the test
title to match that assumption.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 22:02:15 +09:00
Jeff King
2c6fc31e04 t5551: handle trailing slashes in expected cookies output
We check in t5551 that curl updates the expected list of cookies after
making a request. We do this by telling it to read and write cookies
from a particular text file, and then checking that after curl runs, the
file has the expected content.

However, in the upcoming curl 8.18.0, the output file has changed
slightly: curl will canonicalize the paths it writes, due to commit
a093c93994 (cookie: only keep and use the canonical cleaned up path,
2025-12-07). In particular, it strips trailing slashes from the paths we
see in the cookies.txt file.

This doesn't matter to Git, as the cookie handling is all internal to
curl. But our test is overly brittle and breaks as a result.

We can fix it by matching either format. We'll expect the new format
(without trailing slashes) and strip the slashes from curl's output
before comparing. That lets us pass with both old and new versions (I
tested against curl's 8_17_0 and rc-8_18_0-2 tags, which are
respectively before and after the curl change).

In theory it might be nice to try to future-proof this test more by
looking only for the bits we care about, rather than a byte-wise
comparison of the whole file. But after removing comments and blank
lines (which we already do), we care about most of what's there. So it's
not clear to me what a more liberal test would look like. Given that the
format doesn't change all that often, it's probably OK to stop here and
see if it ever breaks again.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 22:02:15 +09:00
Justin Tobler
df1b071fed builtin/repo: add object disk size info to structure table
Similar to a prior commit, update the table output format for the
git-repo(1) structure command to display the total object disk usage by
object type.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 09:02:32 +09:00
Justin Tobler
67cecc693f builtin/repo: add disk size info to keyvalue stucture output
Similar to a prior commit, extend the keyvalue and nul output formats of
the git-repo(1) structure command to additionally provide info regarding
total object disk sizes by object type.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 09:02:32 +09:00
Justin Tobler
4d279ae36b builtin/repo: add inflated object info to structure table
Update the table output format for the git-repo(1) structure command to
begin printing the total inflated object size info by object type. To be
more human-friendly, larger values are scaled down and displayed with
the appropriate unit prefix. Output for the keyvalue and nul formats
remains unchanged.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 09:02:31 +09:00
Justin Tobler
3e114496e4 builtin/repo: add inflated object info to keyvalue structure output
The structure subcommand for git-repo(1) outputs basic count information
for objects and references. Extend this output to also provide
information regarding total size of inflated objects by object type.

For now, object size by object type info is only added to the keyvalue
and nul output formats. In a subsequent commit, this info is also added
to the table format.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 09:02:31 +09:00
Justin Tobler
54731320cc builtin/repo: humanise count values in structure output
The table output format for the git-repo(1) structure subcommand is used
by default and intended to provide output to users in a human-friendly
manner. When the reference/object count values in a repository are
large, it becomes more cumbersome for users to read the values.

For larger values, update the table output format to instead produce
more human-friendly count values that are scaled down with the
appropriate unit prefix. Output for the keyvalue and nul formats remains
unchanged.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 09:02:31 +09:00
Justin Tobler
ce849b1851 strbuf: split out logic to humanise byte values
In a subsequent commit, byte size values displayed in table output for
the git-repo(1) "structure" subcommand will be shown in a more
human-readable format with the appropriate unit prefixes. For this
usecase, the downscaled values and unit strings must be handled
separately to ensure proper column alignment.

Split out logic from strbuf_humanise() to downscale byte values and
determine the corresponding unit prefix into a separate humanise_bytes()
function that provides seperate value and unit strings.

Note that the "byte" string in "t/helper/test-simple-ipc.c" is unmarked
for translation here so that it doesn't conflict with the newly defined
plural "byte/bytes" translation and instead uses it.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 09:02:31 +09:00
Johannes Schindelin
ef6dd000ad t7800: work around the MSYS path conversion on Windows
Git's test suite's relies on Unix shell scripting, which is
understandable, of course, given Git's firm roots (and indeed, ongoing
focus) on Linux.

This fact, combined with Unix shell scripting's natural
habitat -- which is, naturally... *drumroll*... Unix --
often has unintended side effects, where developers expect the test
suite to run in a Unix environment, which is an incorrect assumption.

One instance of this problem can be observed in the 'difftool --dir-diff
handles modified symlinks' test case in `t7800-difftool.sh`, which
assumes that all absolute paths start with a forward slash. That
assumption is incorrect in general, e.g. on Windows, where absolute
paths have many shapes and forms, none of which starts with a forward
slash.

The only saving grace is that this test case is currently not run on
Windows because of the `SYMLINK` prerequisite. However, I am currently
working towards upstreaming symbolic link support from Git for Windows
to upstream Git, which will put a crack into that saving grace.

Let's change that test case so that it does not rely on absolute paths
(which are passed to the "external command" `ls` as parameters and are
therefore part of its output, and which the test case wants to filter
out before verifying that the output is as expected) starting with a
forward slash. Let's instead rely on the much more reliable fact that
`ls` will output the path in a line that ends in a colon, and simply
filter out those lines by matching said colon instead.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:14 +09:00
Johannes Schindelin
eae7c16c3d t6423: introduce Windows-specific handling for symlinking to /dev/null
The device `/dev/null` does not exist on Windows, it's called `NUL`
there. Calling `ln -s /dev/null my-symlink` in a symlink-enabled MSYS2
Bash will therefore literally link to a file or directory called `null`
that is supposed to be in the current drive's top-level `dev` directory.
Which typically does not exist.

The test, however, really wants the created symbolic link to point to
the NUL device. Let's instead use the `mklink` utility on Windows to
perform that job, and keep using `ln -s /dev/null <target>` on
non-Windows platforms.

While at it, add the missing `SYMLINKS` prereq because this test _still_
would not pass on Windows before support for symbolic links is
upstreamed from Git for Windows.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:14 +09:00
Johannes Schindelin
be6ac35107 t1305: skip symlink tests that do not apply to Windows
In Git for Windows, the gitdir is canonicalized so that even when the
gitdir is specified via a symbolic link, the `gitdir:` conditional
include will only match the real directory path.

Unfortunately, t1305 codifies a different behavior in two test cases,
which are hereby skipped on Windows.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:13 +09:00
Johannes Schindelin
dd47906923 t1006: accommodate for symlink support in MSYS2
The MSYS2 runtime (which inherits this trait from the Cygwin runtime,
and which is used by Git for Windows' Bash to emulate POSIX
functionality on Windows, the same Bash that is also used to run Git's
test suite on Windows) has a mode where it can create native symbolic
links on Windows.

Naturally, this is a bit of a strange feature, given that Cygwin goes
out of its way to support Unix-like paths even if no Win32 program
understands those, and the symbolic links have to use Win32 paths
instead (which Win32 programs understand very well).

As a consequence, the symbolic link targets get normalized before the
links are created.

This results in certain quirks that Git's test suite is ill equipped to
accommodate (because Git's test suite expects to be able to use
Unix-like paths even on Windows).

The test script t1006-cat-file.sh contains two prime examples, two test
cases that need to skip a couple assertions because they are simply
wrong in the context of Git for Windows.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:13 +09:00
Johannes Schindelin
bd6457cfa3 t0600: fix incomplete prerequisite for a test case
The 'symref transaction supports symlinks' test case is guarded by the
`SYMLINK` prerequisite because `core.prefersymlinkrefs = true` requires
symbolic links to be supported.

However, the `preferSymlinkRefs` feature is not supported on Windows,
therefore this test case needs the `MINGW` prerequisite, too.

There's a couple more cases where we set this config key:

  - In a subsequent test in t0600, but there we explicitly set it to
    "false". So this would naturally be supported by Windows.

  - In t7201 we set the value to `yes`, but we never verify that the
    written reference is a symbolic link in the first place. I guess
    that we could rather remove setting the configuration value here, as
    we are about to deprecate support for symrefs via symbolic links in
    the first place. But that's certainly outside of the scope of this
    patch.

  - In t9903 we do the same, but likewise, we don't check whether the
    written file is a symbolic link.

Therefore this seems to be the only instance where the tests actually
need to be adapted.

Helped-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:13 +09:00
Johannes Schindelin
492cc31b57 t0301: another fix for Windows compatibility
Just like 0fdcfa2f9f5 (t0301: fixes for windows compatibility,
2021-09-14) explained, we should not call `mkdir -m<mode>` in the test
suite because that would fail on Windows.

There was one forgotten instance of this which was hidden by a `SYMLINK`
prerequisite. Currently, this prevents this test case from being
executed on Windows, but with the upcoming support for symbolic links,
it would become a problem.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:13 +09:00
Johannes Schindelin
5e8e7e47e0 t0001: handle diff --no-index gracefully
The test case 're-init to move gitdir symlink' wants to compare the
contents of `newdir/.git`, which is a symbolic link pointing to a file.
However, `git diff --no-index`, which is used by `test_cmp` on Windows,
does not resolve symlinks; It shows the symlink _target_ instead (with a
file mode of 120000). That is totally unexpected by the test case, which
as a consequence fails, meaning that it's a bug in the test case itself.

Co-authored-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:13 +09:00
Johannes Schindelin
4ec7ac101b t9700: accommodate for Windows paths
Ever since fe53bbc9beb (Git.pm: Always set Repository to absolute path
if autodetecting, 2009-05-07), the t9700 test _must_ fail on Windows
because of that age-old Unix paths vs Windows paths problem.

The underlying root cause is that Git cannot run with a regular Win32
variant of Perl, the assumption that every path is a Unix path is just
too strong in Git's Perl code.

As a consequence, Git for Windows is basically stuck with using the
MSYS2 variant of Perl which uses a POSIX emulation layer (which is a
friendly fork of Cygwin) _and_ a best-effort Unix <-> Windows paths
conversion whenever crossing the boundary between MSYS2 and regular
Win32 processes. It is best effort only, though, using heuristics to
automagically convert correctly in most cases, but not in all cases.

In the context of this here patch, this means that asking `git.exe` for
the absolute path of the `.git/` directory will return a Win32 path
because `git.exe` is a regular Win32 executable that has no idea about
Unix-ish paths. But above-mentioned commit introduced a test that wants
to verify that this path is identical to the one that the Git Perl
module reports (which refuses to use Win32 paths and uses Unix-ish paths
instead). Obviously, this must fail because no heuristics can kick in at
that layer.

This test failure has not even been caught when Git introduced Windows
support in its CI definition in 2e90484eb4a (ci: add a Windows job to
the Azure Pipelines definition, 2019-01-29), as all tests relying on
Perl had to be disabled even from the start (because the CI runs would
otherwise have resulted in prohibitively long runtimes, not because
Windows is super slow per se, but because Git's test suite keeps
insisting on using technology that requires a POSIX emulation layer,
which _is_ super slow on Windows).

To work around this failure, let's use the `cygpath` utility to convert
the absolute `gitdir` path into the form that the Perl code expects.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-18 08:18:12 +09:00
Junio C Hamano
1c22dfde18 Merge branch 'jc/capability-leak'
Leakfix.

* jc/capability-leak:
  connect: plug protocol capability leak
2025-12-17 14:11:52 +09:00
René Scharfe
f293bdcc29 diff-files: fix copy detection
Copy detection cannot work when comparing the index to the working tree
because Git ignores files that it is not explicitly told to track.  It
should work in the other direction, though, i.e. for a reverse diff of
the deletion of a copy from the index.

d1f2d7e8ca (Make run_diff_index() use unpack_trees(), not read_tree(),
2008-01-19) broke it with a seemingly stray change to run_diff_files().

We didn't notice because there's no test for that.  But even if we had
one, it might have gone unnoticed because the breakage only happens
with index preloading, which requires at least 1000 entries (more than
most test repos have) and is racy because it runs in parallel with the
actual command.

Fix copy detection by queuing up-to-date and skip-worktree entries using
diff_same().

While at it, use diff_same() also for queuing unchanged files not
flagged as up-to-date, i.e. clean submodules and entries where
preloading was not done at all or not quickly enough.  It uses less
memory than diff_change() and doesn't unnecessarily set the diff flag
has_changes.

Add two tests to cover running both without and with preloading.  The
first one passes reliably with the original code.  The second one
enables preloading and thus is racy.  It has a good chance to pass even
without the fix, but fails within seconds when running the test script
with --stress.  With the fix it runs fine for several minutes, until
my patience runs out.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-16 10:23:26 +09:00
Junio C Hamano
affdbe41bd Merge branch 'lo/repo-struct-z'
"git repo struct" learned to take "-z" as a synonym to "--format=nul".

* lo/repo-struct-z:
  repo: add -z as an alias for --format=nul to git-repo-structure
  repo: use [--format=... | -z] instead of [-z] in git-repo-info synopsis
  repo: remove blank line from Documentation/git-repo.adoc
2025-12-14 17:04:37 +09:00
Junio C Hamano
2378ebcb58 Merge branch 'kh/advise-w-git-help-in-branch'
A help message from "git branch" now mentions "git help" instead of
"man" when suggesting to read some documentation.

* kh/advise-w-git-help-in-branch:
  branch: advice using git-help(1) instead of man(1)
2025-12-14 17:04:37 +09:00
Junio C Hamano
21787077bf Merge branch 'js/last-modified-with-sparse-checkouts'
"git last-modified" used to mishandle "--" to mark the beginning of
pathspec, which has been corrected.

* js/last-modified-with-sparse-checkouts:
  last-modified: support sparse checkouts
2025-12-14 17:04:37 +09:00
René Scharfe
007b8994d4 t4014: support Git version strings with spaces
git --version reports its version with the prefix "git version ".
Remove precisely this string instead of everything up to and including
the rightmost space to avoid butchering version strings that contain
spaces.  This helps Apple's release of Git, which reports its version
like this: "git version 2.50.1 (Apple Git-155)".

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-14 15:50:44 +09:00
Derrick Stolee
be667e40cb scalar: remove stale config values
These config values were added in the original Scalar contribution,
d0feac4e8c (scalar: 'register' sets recommended config and starts
maintenance, 2021-12-03), but were never fully checked for validity in
the upstream Git project. At the time, Scalar was only intended for the
contrib/ directory so did not have as rigorous of an investigation.

Each config option has its own justification for removal:

* core.preloadIndex: This value is true by default, now. Removing this
  causes some changes required to the tests that checked this config
  value. Use gui.gcwarning=false instead.

* core.fscache: This config does not exist in the core Git project, but
  is instead a config option for a Git for Windows feature.

* core.multiPackIndex: This config value is now enabled by default, so
  does not need to be called out specifically. It was originally
  included to make sure the background maintenance that created
  multi-pack-indexes would result in the expected performance
  improvements.

* credential.validate: This option is not something specific to Git but
  instead an older version of Git Credential Manager for Windows. That
  software was replaced several years ago by the cross-platform Git
  Credential Manger so this option is no longer needed to help users who
  were on that older software.

* pack.useSparse=true: This value is now Git's default as of de3a864114
  (config: set pack.useSparse=true by default, 2020-03-20) so we don't
  need it set by Scalar.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-13 08:43:28 +09:00
Derrick Stolee
05f28e4b3c scalar: use index.skipHash=true for performance
The index.skipHash config option has been set to 'false' by Scalar since
4933152cbb (scalar: enable path-walk during push via config, 2025-05-16)
but that commit message is trying to communicate the exact opposite:
that the 'true' value is what we want instead. This means that we've
been disabling this performance benefit for Scalar repos
unintentionally.

Fix this issue before we add justification for the config options set in
this list.

Oddly, enabling index.skipHash causes a test issue during 'test_commit'
in one of the Scalar tests when GIT_TEST_SPLIT_INDEX is enabled (as
caught by the linux-test-vars build). I'm fixing the test by disabling
the environment variable, but the issue should be resolved in a series
focused on the split index.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-13 08:43:27 +09:00
Derrick Stolee
48695fcde5 scalar: annotate config file with "set by scalar"
A repo may have config options set by 'scalar clone' or 'scalar
register' and then updated by 'scalar reconfigure'. It can be helpful to
point out which of those options were set by the latest scalar
recommendations.

Add "# set by scalar" to the end of each config option to assist users
in identifying why these config options were set in their repo. Use a new
helper method to simplify the two callsites.

Co-authored-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-13 08:43:27 +09:00
Patrick Steinhardt
6ce9d558ce midx-write: skip rewriting MIDX with --stdin-packs unless needed
In `write_midx_internal()` we know to skip rewriting the multi-pack
index in case the existing one already covers all packs. This logic does
not know to handle `git multi-pack-index write --stdin-packs` though, so
we end up always rewriting the MIDX in this case even if the MIDX would
not change.

With our default maintenance strategy this isn't really much of a
problem, as git-gc(1) does not use the "--stdin-packs" option. But that
is changing with geometric repacking, where "--stdin-packs" is used to
explicitly select the packfiles part of the geometric sequence.

This issue can be demonstrated trivially with a benchmark in the Git
repository: executing `git repack --geometric=2 --write-midx -d` in the
Git repository takes more than 3 seconds only to end up with the same
multi-pack index as we already had before.

The logic that decides if we need to rewrite the MIDX only checks
whether the number of packfiles covered will change. That check is of
course too lenient for "--stdin-packs", as it could happen that we want
to cover a different-but-same-size set of packfiles. But there is no
inherent reason why we cannot handle "--stdin-packs".

Improve the logic to not only check for the number of packs, but to also
verify that we are asked to generate a MIDX for the _same_ packs. This
allows us to also skip no-op rewrites for "--stdin-packs".

Helped-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-11 12:09:59 +09:00
Patrick Steinhardt
665d19ec7b midx: fix BUG() when getting preferred pack without a reverse index
The function `midx_preferred_pack()` returns the preferred pack for a
given multi-pack index. To compute the preferred pack we:

  1. Take the first position indexed by the MIDX in pseudo-pack order.

  2. Convert this pseudo-pack position into the MIDX position.

  3. We then look up the pack that corresponds to this MIDX position.

This reliably returns the preferred pack given that all of its contained
objects will be up front in pseudo-pack order.

The second step that turns the pseudo-pack order into MIDX order
requires the reverse index though, which may not exist for example when
the MIDX does not have a bitmap. And in that case one may easily hit a
bug:

    BUG: ../pack-revindex.c:491: pack_pos_to_midx: reverse index not yet loaded

In theory, `midx_preferred_pack()` already knows to handle the case
where no reverse index exists, as it calls `load_midx_revindex()` before
calling into `midx_preferred_pack()`. But we only check for negative
return values there, even though the function returns a positive error
code in case the reverse index does not exist.

Fix the issue by testing for a non-zero return value instead, same as
all the other callers of this function already do. While at it, document
the return value of `load_midx_revindex()`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-11 12:09:58 +09:00
Karthik Nayak
b7b17ec8a6 fetch: fix failed batched updates skipping operations
Fix a regression introduced with batched updates in 0e358de64a (fetch:
use batched reference updates, 2025-05-19) when fetching references. In
the `do_fetch()` function, we jump to cleanup if committing the
transaction fails, regardless of whether using batched or atomic
updates. This skips three subsequent operations:

  - Update 'FETCH_HEAD' as part of `commit_fetch_head()`.

  - Add upstream tracking information via `set_upstream()`.

  - Setting remote 'HEAD' values when `do_set_head` is true.

For atomic updates, this is expected behavior. For batched updates,
we want to continue with these operations even if some refs fail to
update.

Skipping `commit_fetch_head()` isn't actually a regression because
'FETCH_HEAD' is already updated via `append_fetch_head()` when not
using '--atomic'. However, we add a test to validate this behavior.

Skipping the other two operations (upstream tracking and remote HEAD)
is a regression. Fix this by only jumping to cleanup when using
'--atomic', allowing batched updates to continue with post-fetch
operations. Add tests to prevent future regressions.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-10 20:59:58 +09:00
Karthik Nayak
8ff2eef8ad fetch: fix non-conflicting tags not being committed
The commit 0e358de64a (fetch: use batched reference updates, 2025-05-19)
updated the 'git-fetch(1)' command to use batched updates. This batches
updates to gain performance improvements. When fetching references, each
update is added to the transaction. Finally, when committing, individual
updates are allowed to fail with reason, while the transaction itself
succeeds.

One scenario which was missed here, was fetching tags. When fetching
conflicting tags, the `fetch_and_consume_refs()` function returns '1',
which skipped committing the transaction and directly jumped to the
cleanup section. This mean that no updates were applied. This also
extends to backfilling tags which is done when fetching specific
refspecs which contains tags in their history.

Fix this by committing the transaction when we have an error code and
not using an atomic transaction. This ensures other references are
applied even when some updates fail.

The cleanup section is reached with `retcode` set in several scenarios:

   - `truncate_fetch_head()`, `open_fetch_head()` and `prune_refs()` set
     `retcode` before the transaction is created, so no commit is
     attempted.

   - `fetch_and_consume_refs()` and `backfill_tags()` are the primary
     cases this fix targets, both setting a positive `retcode` to
     trigger the committing of the transaction.

This simplifies error handling and ensures future modifications to
`do_fetch()` don't need special handling for batched updates.

Add tests to check for this regression. While here, add a missing
cleanup from previous test.

Reported-by: David Bohman <debohman@gmail.com>
Helped-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-10 20:59:58 +09:00
Junio C Hamano
fe0e6ffa19 Merge branch 'bc/zsh-testsuite'
A few tests have been updated to work under the shell compatible
mode of zsh.

* bc/zsh-testsuite:
  t5564: fix test hang under zsh's sh mode
  t0614: use numerical comparison with test_line_count
2025-12-09 07:54:54 +09:00
Junio C Hamano
48176f953f connect: plug protocol capability leak
When pushing to a set of remotes using a nickname for the group, the
client initializes the connection to each remote, talks to the
remote and reads and parses capabilities line, and holds the
capabilities in a file-scope static variable server_capabilities_v1.

There are a few other such file-scope static variables, and these
connections cannot be parallelized until they are refactored to a
structure that keeps track of active connections.

Which is *not* the theme of this patch ;-)

For a single connection, the server_capabilities_v1 variable is
initialized to NULL (at the program initialization), populated when
we talk to the other side, used to look up capabilities of the other
side possibly multiple times, and the memory is held by the variable
until program exit, without leaking.  When talking to multiple remotes,
however, the server capabilities from the second connection overwrites
without freeing the one from the first connection, which leaks.

    ==1080970==ERROR: LeakSanitizer: detected memory leaks

    Direct leak of 421 byte(s) in 2 object(s) allocated from:
	#0 0x5615305f849e in strdup (/home/gitster/g/git-jch/bin/bin/git+0x2b349e) (BuildId: 54d149994c9e85374831958f694bd0aa3b8b1e26)
	#1 0x561530e76cc4 in xstrdup /home/gitster/w/build/wrapper.c:43:14
	#2 0x5615309cd7fa in process_capabilities /home/gitster/w/build/connect.c:243:27
	#3 0x5615309cd502 in get_remote_heads /home/gitster/w/build/connect.c:366:4
	#4 0x561530e2cb0b in handshake /home/gitster/w/build/transport.c:372:3
	#5 0x561530e29ed7 in get_refs_via_connect /home/gitster/w/build/transport.c:398:9
	#6 0x561530e26464 in transport_push /home/gitster/w/build/transport.c:1421:16
	#7 0x561530800bec in push_with_options /home/gitster/w/build/builtin/push.c:387:8
	#8 0x5615307ffb99 in do_push /home/gitster/w/build/builtin/push.c:442:7
	#9 0x5615307fe926 in cmd_push /home/gitster/w/build/builtin/push.c:664:7
	#10 0x56153065673f in run_builtin /home/gitster/w/build/git.c:506:11
	#11 0x56153065342f in handle_builtin /home/gitster/w/build/git.c:779:9
	#12 0x561530655b89 in run_argv /home/gitster/w/build/git.c:862:4
	#13 0x561530652cba in cmd_main /home/gitster/w/build/git.c:984:19
	#14 0x5615308dda0a in main /home/gitster/w/build/common-main.c:9:11
	#15 0x7f051651bca7 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16

    SUMMARY: AddressSanitizer: 421 byte(s) leaked in 2 allocation(s).

Free the capablities data for the previous server before overwriting
it with the next server to plug this leak.

The added test fails without the freeing with SANITIZE=leak; I
somehow couldn't get it fail reliably with SANITIZE=leak,address
though.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-09 07:11:42 +09:00
Junio C Hamano
9d442ce2e2 Merge branch 'ps/object-source-management'
Code refactoring around object database sources.

* ps/object-source-management:
  odb: handle recreation of quarantine directories
  odb: handle changing a repository's commondir
  chdir-notify: add function to unregister listeners
  odb: handle initialization of sources in `odb_new()`
  http-push: stop setting up `the_repository` for each reference
  t/helper: stop setting up `the_repository` repeatedly
  builtin/index-pack: fix deferred fsck outside repos
  oidset: introduce `oidset_equal()`
  odb: move logic to disable ref updates into repo
  odb: refactor `odb_clear()` to `odb_free()`
  odb: adopt logic to close object databases
  setup: convert `set_git_dir()` to have file scope
  path: move `enter_repo()` into "setup.c"
2025-12-05 14:49:58 +09:00
Junio C Hamano
1b40ddc1a5 Merge branch 'cc/fast-import-strip-if-invalid'
"git fast-import" learns "--strip-if-invalid" option to drop
invalid cryptographic signature from objects.

* cc/fast-import-strip-if-invalid:
  fast-import: add 'strip-if-invalid' mode to --signed-commits=<mode>
  commit: refactor verify_commit_buffer()
  fast-import: refactor finalize_commit_buffer()
2025-12-05 14:49:58 +09:00
Junio C Hamano
0534b78576 Merge branch 'jc/optional-path'
"git config get --path" segfaulted on an ":(optional)path" that
does not exist, which has been corrected.

* jc/optional-path:
  config: really treat missing optional path as not configured
  config: really pretend missing :(optional) value is not there
  config: mark otherwise unused function as file-scope static
2025-12-05 14:49:56 +09:00
Lucas Seiki Oshiro
76c0704bdf repo: add -z as an alias for --format=nul to git-repo-structure
Other Git commands that have nul-terminated output, such as git-config,
git-status, git-ls-files, and git-repo-info have a flag `-z` for using
the null character as the record separator.

Add the `-z` flag to git-repo-structure as an alias for `--format=nul`,
making it consistent with the behavior of the other commands.

Signed-off-by: Lucas Seiki Oshiro <lucasseikioshiro@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-05 11:39:19 +09:00
Johannes Schindelin
05491b90ce last-modified: support sparse checkouts
In a sparse checkout, a user might want to run `last-modified` on a
directory outside the worktree.

And even in non-sparse checkouts, a user might need to run that command
on a directory that does not exist in the worktree.

These use cases should be supported via the `--` separator between
revision and file arguments, which is even advertised in the
documentation. This patch fixes a tiny bug that prevents that from
working.

This fixes https://github.com/git-for-windows/git/issues/5978

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Derrick Stolee <stolee@gmail.com>
Acked-by: Toon Claes <toon@iotcl.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-03 14:20:18 -08:00
Kristoffer Haugsbakk
b14f1df9f2 branch: advice using git-help(1) instead of man(1)
8fbd903e (branch: advise about ref syntax rules, 2024-03-05) added
an advice about checking git-check-ref-format(1) for the ref syntax
rules. The advice uses man(1). But git(1) is a multi-platform tool and
man(1) may not be available on some platforms. It might also be slightly
jarring to see a suggestion for running a command which is not from
the Git suite.

Let’s instead use git-help(1) in order to stay inside the land of
git(1). This also means that `help.format` (for `man`, `html` or other
formats) will be used if set.

Also change to using single quotes (') to quote the command since that
is more conventional.

While here let’s also update the test to use `{SQ}`, which is more
readable and easier to edit.

Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-12-03 00:16:05 -08:00
Junio C Hamano
aea8cc3a10 Merge branch 'jk/asan-bonanza'
Various issues detected by Asan have been corrected.

* jk/asan-bonanza:
  t: enable ASan's strict_string_checks option
  fsck: avoid parse_timestamp() on buffer that isn't NUL-terminated
  fsck: remove redundant date timestamp check
  fsck: avoid strcspn() in fsck_ident()
  fsck: assert newline presence in fsck_ident()
  cache-tree: avoid strtol() on non-string buffer
  Makefile: turn on NO_MMAP when building with ASan
  pack-bitmap: handle name-hash lookups in incremental bitmaps
  compat/mmap: mark unused argument in git_munmap()
2025-11-30 18:31:41 -08:00
Junio C Hamano
3b212a83fe Merge branch 'jc/whitespace-incomplete-line'
Both "git apply" and "git diff" learn a new whitespace error class,
"incomplete-line".

* jc/whitespace-incomplete-line:
  attr: enable incomplete-line whitespace error for this project
  diff: highlight and error out on incomplete lines
  apply: check and fix incomplete lines
  whitespace: allocate a few more bits and define WS_INCOMPLETE_LINE
  apply: revamp the parsing of incomplete lines
  diff: update the way rewrite diff handles incomplete lines
  diff: call emit_callback ecbdata everywhere
  diff: refactor output of incomplete line
  diff: keep track of the type of the last line seen
  diff: correct suppress_blank_empty hack
  diff: emit_line_ws_markup() if/else style fix
  whitespace: correct bit assignment comments
2025-11-30 18:31:40 -08:00