Commit Graph

73139 Commits (v2.45.2)

Author SHA1 Message Date
Pi Fisher 84a7c33a4b typo: replace 'commitish' with 'committish'
Across only three files, comments and a single function name used
'commitish' rather than 'commit-ish' or 'committish' as the spelling.
The git glossary accepts a hyphen or a double-t, but not a single-t.
Despite the typo in a translation file, none of the typos appear in
user-visible locations.

Signed-off-by: Pi Fisher <Pi.L.D.Fisher@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-11 15:14:56 -07:00
Jeff King 5d312ec8a4 remote-curl: add Transfer-Encoding header only for older curl
As of curl 7.66.0, we don't need to manually specify a "chunked"
Transfer-Encoding header. Instead, modern curl deduces the need for it
in a POST that has a POSTFIELDSIZE of -1 and uses READFUNCTION rather
than POSTFIELDS.

That version is recent enough that we can't just drop the header; we
need to do so conditionally. Since it's only a single line, it seems
like the simplest thing would just be to keep setting it unconditionally
(after all, the #ifdefs are much longer than the actual code). But
there's another wrinkle: HTTP/2.

Curl may choose to use HTTP/2 under the hood if the server supports it.
And in that protocol, we do not use the chunked encoding for streaming
at all. Most versions of curl handle this just fine by recognizing and
removing the header. But there's a regression in curl 8.7.0 and 8.7.1
where it doesn't, and large requests over HTTP/2 are broken (which t5559
notices). That regression has since been fixed upstream, but not yet
released.

Make the setting of this header conditional, which will let Git work
even with those buggy curl versions. And as a bonus, it serves as a
reminder that we can eventually clean up the code as we bump the
supported curl versions.

This is a backport of 92a209bf24 (remote-curl: add Transfer-Encoding
header only for older curl, 2024-04-05) into the `maint-2.39` branch.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2024-04-10 19:24:48 +02:00
Jeff King ea61df9d1e INSTALL: bump libcurl version to 7.21.3
Our documentation claims we support curl versions back to 7.19.5. But we
can no longer compile with that version since adding an unconditional
use of CURLOPT_RESOLVE in 511cfd3bff (http: add custom hostname to IP
address resolutions, 2022-05-16). That feature wasn't added to libcurl
until 7.21.3.

We could add #ifdefs to make this work back to 7.19.5. But given that
nobody noticed the compilation failure in the intervening two years, it
makes more sense to bump the version in the documentation to 7.21.3
(which is itself over 13 years old).

We could perhaps go forward even more (which would let us drop some
cruft from git-curl-compat.h), but this should be an obviously safe
jump, and we can move forward later.

Note that user-visible syntax for CURLOPT_RESOLVE has grown new features
in subsequent curl versions. Our documentation mentions "+" and "-"
entries, which require more recent versions than 7.21.3. We could
perhaps clarify that in our docs, but it's probably not worth cluttering
them with restrictions of ancient curl versions.

This is a backport of c28ee09503 (INSTALL: bump libcurl version to
7.21.3, 2024-04-02) into the `maint-2.39` branch.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2024-04-10 19:24:48 +02:00
Jeff King 580097bf95 http: reset POSTFIELDSIZE when clearing curl handle
In get_active_slot(), we return a CURL handle that may have been used
before (reusing them is good because it lets curl reuse the same
connection across many requests). We set a few curl options back to
defaults that may have been modified by previous requests.

We reset POSTFIELDS to NULL, but do not reset POSTFIELDSIZE (which
defaults to "-1"). This usually doesn't matter because most POSTs will
set both fields together anyway. But there is one exception: when
handling a large request in remote-curl's post_rpc(), we don't set
_either_, and instead set a READFUNCTION to stream data into libcurl.

This can interact weirdly with a stale POSTFIELDSIZE setting, because
curl will assume it should read only some set number of bytes from our
READFUNCTION. However, it has worked in practice because we also
manually set a "Transfer-Encoding: chunked" header, which libcurl uses
as a clue to set the POSTFIELDSIZE to -1 itself.

So everything works, but we're better off resetting the size manually
for a few reasons:

  - there was a regression in curl 8.7.0 where the chunked header
    detection didn't kick in, causing any large HTTP requests made by
    Git to fail. This has since been fixed (but not yet released). In
    the issue, curl folks recommended setting it explicitly to -1:

      https://github.com/curl/curl/issues/13229#issuecomment-2029826058

    and it indeed works around the regression. So even though it won't
    be strictly necessary after the fix there, this will help folks who
    end up using the affected libcurl versions.

  - it's consistent with what a new curl handle would look like. Since
    get_active_slot() may or may not return a used handle, this reduces
    the possibility of heisenbugs that only appear with certain request
    patterns.

Note that the recommendation in the curl issue is to actually drop the
manual Transfer-Encoding header. Modern libcurl will add the header
itself when streaming from a READFUNCTION. However, that code wasn't
added until 802aa5ae2 (HTTP: use chunked Transfer-Encoding for HTTP_POST
if size unknown, 2019-07-22), which is in curl 7.66.0. We claim to
support back to 7.19.5, so those older versions still need the manual
header.

This is a backport of 3242311742 (http: reset POSTFIELDSIZE when
clearing curl handle, 2024-04-02) into the `maint-2.39` branch.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2024-04-10 19:24:48 +02:00
Junio C Hamano 436d4e5b14 The seventeenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-10 10:00:09 -07:00
Junio C Hamano f43863e686 Merge branch 'jc/t2104-style-update'
Coding style fixes.

* jc/t2104-style-update:
  t2104: style fixes
2024-04-10 10:00:09 -07:00
Junio C Hamano 280b74ce18 Merge branch 'kn/clarify-update-ref-doc'
Doc update, as a preparation to enhance "git update-ref --stdin".

* kn/clarify-update-ref-doc:
  githooks: use {old,new}-oid instead of {old,new}-value
  update-ref: use {old,new}-oid instead of {old,new}value
2024-04-10 10:00:08 -07:00
Junio C Hamano a4a1453ad1 Merge branch 'vs/complete-with-set-u-fix'
Another "set -u" fix for the bash prompt (in contrib/) script.

* vs/complete-with-set-u-fix:
  completion: protect prompt against unset SHOWUPSTREAM in nounset mode
  completion: fix prompt with unset SHOWCONFLICTSTATE in nounset mode
2024-04-10 10:00:08 -07:00
Junio C Hamano aaf524cfb0 Merge branch 'rs/mem-pool-size-t-safety'
size_t arithmetic safety.

* rs/mem-pool-size-t-safety:
  mem-pool: use st_add() in mem_pool_strvfmt()
2024-04-10 10:00:08 -07:00
Junio C Hamano dc89c59951 Merge branch 'ds/typofix-core-config-doc'
Typofix.

* ds/typofix-core-config-doc:
  config: fix some small capitalization issues, as spotted
2024-04-10 10:00:08 -07:00
Đoàn Trần Công Danh 03e84cca5d t9604: Fix test for musl libc and new Debian
CST6CDT and the like are POSIX timezone, with no rule for transition.
And POSIX doesn't enforce how to interpret the rule if it's omitted.
Some libc (e.g. glibc) resorted back to IANA (formerly Olson) db rules
for those timezones.  Some libc (e.g. FreeBSD) uses a fixed rule.
Other libc (e.g. musl) interpret that as no transition at all [1].

In addition, distributions (notoriously Debian-derived, which uses IANA
db for CST6CDT and the like) started to split "legacy" timezones
like CST6CDT, EST5EDT into `tzdata-legacy', which will not be installed
by default [2].

In those cases, t9604 will run into failure.

Let's switch to POSIX timezone with rules to change timezone.

1: http://mm.icann.org/pipermail/tz/2024-March/058751.html
2: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1043250

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-10 09:10:31 -07:00
Junio C Hamano 8d320cec60 t2104: style fixes
We use tabs to indent, not two or four spaces.

These days, even the test fixture preparation should be done inside
test_expect_success block.

Address these two style violations in this test.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-09 22:27:49 -07:00
Phillip Wood b4454d5a7b t3428: restore coverage for "apply" backend
This test file assumes the "apply" backend is the default which is not
the case since 2ac0d6273f (rebase: change the default backend from "am"
to "merge", 2020-02-15). Make sure the "apply" backend is tested by
specifying it explicitly.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-09 16:03:19 -07:00
Phillip Wood 1ad81756b4 t3428: use test_commit_message
Using a helper function makes the tests shorter and avoids running "git
cat-file" upstream of a pipe.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-09 16:03:19 -07:00
Phillip Wood aac1c6e8f5 t3428: modernize test setup
Perform the setup in a dedicated test so the later tests can be run
independently. Also avoid running git upstream of a pipe and take
advantage of test_commit.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-09 16:03:19 -07:00
Junio C Hamano 91ec36f2cc The sixteenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-09 14:31:45 -07:00
Junio C Hamano 8f31543f3d Merge branch 'rj/use-adv-if-enabled'
Use advice_if_enabled() API to rewrite a simple pattern to
call advise() after checking advice_enabled().

* rj/use-adv-if-enabled:
  add: use advise_if_enabled for ADVICE_ADD_EMBEDDED_REPO
  add: use advise_if_enabled for ADVICE_ADD_EMPTY_PATHSPEC
  add: use advise_if_enabled for ADVICE_ADD_IGNORED_FILE
2024-04-09 14:31:45 -07:00
Junio C Hamano eacfd581d2 Merge branch 'ps/pack-refs-auto'
"git pack-refs" learned the "--auto" option, which is a useful
addition to be triggered from "git gc --auto".

Acked-by: Karthik Nayak <karthik.188@gmail.com>
cf. <CAOLa=ZRAEA7rSUoYL0h-2qfEELdbPHbeGpgBJRqesyhHi9Q6WQ@mail.gmail.com>

* ps/pack-refs-auto:
  builtin/gc: pack refs when using `git maintenance run --auto`
  builtin/gc: forward git-gc(1)'s `--auto` flag when packing refs
  t6500: extract objects with "17" prefix
  builtin/gc: move `struct maintenance_run_opts`
  builtin/pack-refs: introduce new "--auto" flag
  builtin/pack-refs: release allocated memory
  refs/reftable: expose auto compaction via new flag
  refs: remove `PACK_REFS_ALL` flag
  refs: move `struct pack_refs_opts` to where it's used
  t/helper: drop pack-refs wrapper
  refs/reftable: print errors on compaction failure
  reftable/stack: gracefully handle failed auto-compaction due to locks
  reftable/stack: use error codes when locking fails during compaction
  reftable/error: discern locked/outdated errors
  reftable/stack: fix error handling in `reftable_stack_init_addition()`
2024-04-09 14:31:45 -07:00
Junio C Hamano a6abddab1e Merge branch 'es/test-cron-safety'
The test script had an incomplete and ineffective attempt to avoid
clobbering the testing user's real crontab (and its equivalents),
which has been completed.

* es/test-cron-safety:
  test-lib: fix non-functioning GIT_TEST_MAINT_SCHEDULER fallback
2024-04-09 14:31:45 -07:00
Junio C Hamano 989bf45394 Merge branch 'rj/add-p-explicit-reshow'
"git add -p" and other "interactive hunk selection" UI has learned to
skip showing the hunk immediately after it has already been shown, and
an additional action to explicitly ask to reshow the current hunk.

* rj/add-p-explicit-reshow:
  add-patch: do not print hunks repeatedly
  add-patch: introduce 'p' in interactive-patch
2024-04-09 14:31:44 -07:00
Junio C Hamano 4b4081034b Merge branch 'mg/editorconfig-makefile'
The .editorconfig file has been taught that a Makefile uses HT
indentation.

* mg/editorconfig-makefile:
  editorconfig: add Makefiles to "text files"
2024-04-09 14:31:44 -07:00
Junio C Hamano 58dd7e4b11 Merge branch 'ja/doc-markup-updates'
Documentation rules has been explicitly described how to mark-up
literal parts and a few manual pages have been updated as examples.

* ja/doc-markup-updates:
  doc: git-clone: do not autoreference the manpage in itself
  doc: git-clone: apply new documentation formatting guidelines
  doc: git-init: apply new documentation formatting guidelines
  doc: allow literal and emphasis format in doc vs help tests
  doc: rework CodingGuidelines with new formatting rules
2024-04-09 14:31:44 -07:00
Junio C Hamano 4697c8a445 Merge branch 'dg/myfirstobjectwalk-updates'
Update a more recent tutorial doc.

* dg/myfirstobjectwalk-updates:
  MyFirstObjectWalk: add stderr to pipe processing
  MyFirstObjectWalk: fix description for counting omitted objects
  MyFirstObjectWalk: fix filtered object walk
  MyFirstObjectWalk: fix misspelled "builtins/"
  MyFirstObjectWalk: use additional arg in config_fn_t
2024-04-09 14:31:44 -07:00
Junio C Hamano 39b2c6f77e Merge branch 'jc/advice-sans-trailing-whitespace'
The "hint:" messages given by the advice mechanism, when given a
message with a blank line, left a line with trailing whitespace,
which has been cleansed.

* jc/advice-sans-trailing-whitespace:
  advice: omit trailing whitespace
2024-04-09 14:31:43 -07:00
Junio C Hamano 8289a36f87 Merge branch 'jc/apply-parse-diff-git-header-names-fix'
"git apply" failed to extract the filename the patch applied to,
when the change was about an empty file created in or deleted from
a directory whose name ends with a SP, which has been corrected.

* jc/apply-parse-diff-git-header-names-fix:
  t4126: fix "funny directory name" test on Windows (again)
  t4126: make sure a directory with SP at the end is usable
  apply: parse names out of "diff --git" more carefully
2024-04-09 14:31:43 -07:00
Patrick Steinhardt 69d87802da t0610: execute git-pack-refs(1) with specified umask
The tests for git-pack-refs(1) with the `core.sharedRepository` config
execute git-pack-refs(1) outside of the shell that has the expected
umask set. This is wrong because we want to test the behaviour of that
command with different umasks. The issue went unnoticed because most
distributions have a default umask of 0022, and we only ever test with
`--shared=true`, which re-adds the group write bit.

Fix the issue by moving git-pack-refs(1) into the umask'd shell and add
a bunch of test cases that exercise behaviour more thoroughly.

Note that we drop the check for whether `core.sharedRepository` was set
to the correct value to make the test setup a bit easier. We should be
able to rely on git-init(1) doing its thing correctly. Furthermore, to
help readability, we convert tests that pass `--shared=true` to instead
pass the equivalent `--shared=group`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-09 14:14:00 -07:00
Patrick Steinhardt 2f960dd5fe t0610: make `--shared=` tests reusable
We have two kinds of `--shared=` tests, one for git-init(1) and one for
git-pack-refs(1). Merge them into a reusable function such that we can
easily add additional testcases with different umasks and flags for the
`--shared=` switch.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-09 14:14:00 -07:00
Junio C Hamano 227b8fd902 Makefile(s): do not enforce "all indents must be done with tab"
Our top-level Makefile follows our generic whitespace rule
established by the top-level .gitattributes file that does not
enforce indent-with-non-tab rule by default, but git-gui is set up
to enforce indent-with-non-tab by default.  With the upcoming change
to GNU make, we no longer can reject (and worse, "fix") a patch that
adds whitespace indented lines to the Makefile, so loosen the rule
there for git-gui/Makefile, too.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-08 16:36:05 -07:00
Taylor Blau 728b9ac0c3 Makefile(s): avoid recipe prefix in conditional statements
In GNU Make commit 07fcee35 ([SV 64815] Recipe lines cannot contain
conditional statements, 2023-05-22) and following, conditional
statements may no longer be preceded by a tab character (which Make
refers to as the recipe prefix).

There are a handful of spots in our various Makefile(s) which will break
in a future release of Make containing 07fcee35. For instance, trying to
compile the pre-image of this patch with the tip of make.git results in
the following:

    $ make -v | head -1 && make
    GNU Make 4.4.90
    config.mak.uname:842: *** missing 'endif'.  Stop.

The kernel addressed this issue in 82175d1f9430 (kbuild: Replace tabs
with spaces when followed by conditionals, 2024-01-28). Address the
issues in Git's tree by applying the same strategy.

When a conditional word (ifeq, ifneq, ifdef, etc.) is preceded by one or
more tab characters, replace each tab character with 8 space characters
with the following:

    find . -type f -not -path './.git/*' -name Makefile -or -name '*.mak' |
      xargs perl -i -pe '
        s/(\t+)(ifn?eq|ifn?def|else|endif)/" " x (length($1) * 8) . $2/ge unless /\\$/
      '

The "unless /\\$/" removes any false-positives (like "\telse \"
appearing within a shell script as part of a recipe).

After doing so, Git compiles on newer versions of Make:

    $ make -v | head -1 && make
    GNU Make 4.4.90
    GIT_VERSION = 2.44.0.414.gfac1dc44ca9
    [...]

    $ echo $?
    0

Reported-by: Dario Gjorgjevski <dario.gjorgjevski@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-08 14:42:32 -07:00
Junio C Hamano 0e0fefb29f config: do not leak excludes_file
The excludes_file variable is marked "const char *", but all the
assignments to it are made with a piece of memory allocated just
for it, and the variable is responsible for owning it.

When "core.excludesfile" is read, the code just lost the previous
value, leaking memory.  Plug it.

The real problem is that the variable is mistyped; our convention
is to never make a variable that owns the piece of memory pointed
by it as "const".  Fixing that would reduce the chance of this kind
of bug happening, and also would make it unnecessary to cast the
constness away while free()ing it, but that would be a much larger
follow-up effort.

Reported-by: Rubén Justo <rjusto@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-08 13:20:24 -07:00
Justin Tobler a949ebd342 reftable/stack: use geometric table compaction
To reduce the number of on-disk reftables, compaction is performed.
Contiguous tables with the same binary log value of size are grouped
into segments. The segment that has both the lowest binary log value and
contains more than one table is set as the starting point when
identifying the compaction segment.

Since segments containing a single table are not initially considered
for compaction, if the table appended to the list does not match the
previous table log value, no compaction occurs for the new table. It is
therefore possible for unbounded growth of the table list. This can be
demonstrated by repeating the following sequence:

git branch -f foo
git branch -d foo

Each operation results in a new table being written with no compaction
occurring until a separate operation produces a table matching the
previous table log value.

Instead, to avoid unbounded growth of the table list, the compaction
strategy is updated to ensure tables follow a geometric sequence after
each operation by individually evaluating each table in reverse index
order. This strategy results in a much simpler and more robust algorithm
compared to the previous one while also maintaining a minimal ordered
set of tables on-disk.

When creating 10 thousand references, the new strategy has no
performance impact:

Benchmark 1: update-ref: create refs sequentially (revision = HEAD~)
  Time (mean ± σ):     26.516 s ±  0.047 s    [User: 17.864 s, System: 8.491 s]
  Range (min … max):   26.447 s … 26.569 s    10 runs

Benchmark 2: update-ref: create refs sequentially (revision = HEAD)
  Time (mean ± σ):     26.417 s ±  0.028 s    [User: 17.738 s, System: 8.500 s]
  Range (min … max):   26.366 s … 26.444 s    10 runs

Summary
  update-ref: create refs sequentially (revision = HEAD) ran
    1.00 ± 0.00 times faster than update-ref: create refs sequentially (revision = HEAD~)

Some tests in `t0610-reftable-basics.sh` assert the on-disk state of
tables and are therefore updated to specify the correct new table count.
Since compaction is more aggressive in ensuring tables maintain a
geometric sequence, the expected table count is reduced in these tests.
In `reftable/stack_test.c` tests related to `sizes_to_segments()` are
removed because the function is no longer needed. Also, the
`test_suggest_compaction_segment()` test is updated to better showcase
and reflect the new geometric compaction behavior.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-08 12:11:10 -07:00
Justin Tobler 7c8eb5928f reftable/stack: add env to disable autocompaction
In future tests it will be neccesary to create repositories with a set
number of tables. To make this easier, introduce the
`GIT_TEST_REFTABLE_AUTOCOMPACTION` environment variable that, when set
to false, disables autocompaction of reftables.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-08 12:11:10 -07:00
Justin Tobler bc91330cec reftable/stack: expose option to disable auto-compaction
The reftable stack already has a variable to configure whether or not to
run auto-compaction, but it is inaccessible to users of the library.
There exist use cases where a caller may want to have more control over
auto-compaction.

Move the `disable_auto_compact` option into `reftable_write_options` to
allow external callers to disable auto-compaction. This will be used in
a subsequent commit.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-08 12:11:10 -07:00
Junio C Hamano 836b221391 t1016: local VAR="VAL" fix
The series was based on maint and fixes all the tests that exist
there, but we have acquired a few more.

I suspect that the values assigned in many of these places are $IFS
safe, and this is primarily to squelch the linter than adding a
necessary workaround for buggy dash.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:50:11 -07:00
Junio C Hamano 26ba7477d9 t0610: local VAR="VAL" fix
The series was based on maint and fixes all the tests that exist
there, but we have acquired a few more.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:50:11 -07:00
Junio C Hamano 8bfe486191 t: teach lint that RHS of 'local VAR=VAL' needs to be quoted
Teach t/check-non-portable-shell.pl that right hand side of the
assignment done with "local VAR=VAL" need to be quoted.  We
deliberately target only VAL that begins with $ so that we can catch

 - $variable_reference and positional parameter reference like $4
 - $(command substitution)
 - ${variable_reference-with_magic}

while excluding

 - $'\n' that is a bash-ism freely usable in t990[23]
 - $(( arithmetic )) whose result should be $IFS safe.
 - $? that also is $IFS safe

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:50:11 -07:00
Junio C Hamano e97f4a6d94 t: local VAR="VAL" (quote ${magic-reference})
Future-proof test scripts that do

	local VAR=VAL

without quoting VAL (which is OK in POSIX but broken in some shells)
that is ${magic-"reference to a parameter"}.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:50:11 -07:00
Junio C Hamano 7f9f230b7f t: local VAR="VAL" (quote command substitution)
Future-proof test scripts that do

	local VAR=VAL

without quoting VAL (which is OK in POSIX but broken in some shells)
that is a $(command substitution).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:50:10 -07:00
Junio C Hamano 341aad8d41 t: local VAR="VAL" (quote positional parameters)
Future-proof test scripts that do

	local VAR=VAL

without quoting VAL (which is OK in POSIX but broken in some shells)
that is a positional parameter, e.g. $4.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:50:10 -07:00
Junio C Hamano be34b51049 CodingGuidelines: quote assigned value in 'local var=$val'
Dash bug https://bugs.launchpad.net/ubuntu/+source/dash/+bug/139097
lets the shell erroneously perform field splitting on the expansion
of a command substitution during declaration of a local or an extern
variable.

The explanation was stolen from ebee5580 (parallel-checkout: avoid
dash local bug in tests, 2021-06-06).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:50:05 -07:00
Junio C Hamano 7e3a9c23d6 CodingGuidelines: describe "export VAR=VAL" rule
https://lore.kernel.org/git/201307081121.22769.tboegi@web.de/
resulted in 9968ffff (test-lint: detect 'export FOO=bar',
2013-07-08) to add a rule to t/check-non-portable-shell.pl script to
reject

	export VAR=VAL

and suggest us to instead write it as two statements, i.e.,

	VAR=VAL
	export VAR

This however was not spelled out in the CodingGuidelines document.

We may want to re-evaluate the rule since it is from ages ago, but
for now, let's make the written rule and what the automation
enforces consistent.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 22:48:12 -07:00
Steven Jeuris ec0e3075d2 userdiff: better method/property matching for C#
- Support multi-line methods by not requiring closing parenthesis.
- Support multiple generics (comma was missing before).
- Add missing `foreach`, `lock` and  `fixed` keywords to skip over.
- Remove `instanceof` keyword, which isn't C#.
- Also detect non-method keywords not positioned at the start of a line.
- Added tests; none existed before.

The overall strategy is to focus more on what isn't expected for
method/property definitions, instead of what is, but is fully optional.

Signed-off-by: Steven Jeuris <steven.jeuris@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 15:21:43 -07:00
René Scharfe 9720d23e8c date: make DATE_MODE thread-safe
date_mode_from_type() modifies a static variable and returns a pointer
to it.  This is not thread-safe.  Most callers of date_mode_from_type()
use it via the macro DATE_MODE and pass its result on to functions like
show_date(), which take a const pointer and don't modify the struct.

Avoid the static storage by putting the variable on the stack and
returning the whole struct date_mode.  Change functions that take a
constant pointer to expect the whole struct instead.

Reduce the cost of passing struct date_mode around on 64-bit systems
by reordering its members to close the hole between the 32-bit wide
.type and the 64-bit aligned .strftime_fmt as well as the alignment
hole at the end.  sizeof reports 24 before and 16 with this change
on x64.  Keep .type at the top to still allow initialization without
designator -- though that's only done in a single location, in
builtin/blame.c.

Signed-off-by: René Scharfe <l.s.r@web.de>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 15:21:14 -07:00
René Scharfe c63adab961 usage: report vsnprintf(3) failure
vreportf(), which is used e.g. by die() and warning() by default, calls
vsnprintf(3) to format the message to report.  If that call fails, it
only prints the prefix, e.g. "fatal: " or "warning: ".  This at least
informs users that they were supposed to get a message and reveals its
severity, but leaves them wondering what it may have been about.

Here's an example where vreportf() tries to print a message with a 2GB
string, which is too much for vsnprintf(3):

  $ perl -le 'print "create refs/heads/", "a"x2**31' | git update-ref --stdin
  fatal:

At least report the formatting error along with the offending message
(unformatted) to indicate why that message is empty.  Use fprintf(3)
instead of error() to get the message out directly and avoid recursing
back into vreportf().

With this patch we get:

  $ perl -le 'print "create refs/heads/", "a"x2**31' | git update-ref --stdin
  error: unable to format message: invalid ref format: %s
  fatal:

... which allows users to at least get an idea of what went wrong.

Suggested-by: Jeff King <peff@peff.net>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 15:16:27 -07:00
Jeff King 92a209bf24 remote-curl: add Transfer-Encoding header only for older curl
As of curl 7.66.0, we don't need to manually specify a "chunked"
Transfer-Encoding header. Instead, modern curl deduces the need for it
in a POST that has a POSTFIELDSIZE of -1 and uses READFUNCTION rather
than POSTFIELDS.

That version is recent enough that we can't just drop the header; we
need to do so conditionally. Since it's only a single line, it seems
like the simplest thing would just be to keep setting it unconditionally
(after all, the #ifdefs are much longer than the actual code). But
there's another wrinkle: HTTP/2.

Curl may choose to use HTTP/2 under the hood if the server supports it.
And in that protocol, we do not use the chunked encoding for streaming
at all. Most versions of curl handle this just fine by recognizing and
removing the header. But there's a regression in curl 8.7.0 and 8.7.1
where it doesn't, and large requests over HTTP/2 are broken (which t5559
notices). That regression has since been fixed upstream, but not yet
released.

Make the setting of this header conditional, which will let Git work
even with those buggy curl versions. And as a bonus, it serves as a
reminder that we can eventually clean up the code as we bump the
supported curl versions.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 14:45:19 -07:00
Junio C Hamano 19981daefd The fifteenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 10:49:49 -07:00
Junio C Hamano dce1e0b6da Merge branch 'jk/core-comment-string'
core.commentChar used to be limited to a single byte, but has been
updated to allow an arbitrary multi-byte sequence.

* jk/core-comment-string:
  config: add core.commentString
  config: allow multi-byte core.commentChar
  environment: drop comment_line_char compatibility macro
  wt-status: drop custom comment-char stringification
  sequencer: handle multi-byte comment characters when writing todo list
  find multi-byte comment chars in unterminated buffers
  find multi-byte comment chars in NUL-terminated strings
  prefer comment_line_str to comment_line_char for printing
  strbuf: accept a comment string for strbuf_add_commented_lines()
  strbuf: accept a comment string for strbuf_commented_addf()
  strbuf: accept a comment string for strbuf_stripspace()
  environment: store comment_line_char as a string
  strbuf: avoid shadowing global comment_line_char name
  commit: refactor base-case of adjust_comment_line_char()
  strbuf: avoid static variables in strbuf_add_commented_lines()
  strbuf: simplify comment-handling in add_lines() helper
  config: forbid newline as core.commentChar
2024-04-05 10:49:49 -07:00
Junio C Hamano 3256584c36 Merge branch 'rs/config-comment'
"git config" learned "--comment=<message>" option to leave a
comment immediately after the "variable = value" on the same line
in the configuration file.

* rs/config-comment:
  config: allow tweaking whitespace between value and comment
  config: fix --comment formatting
  config: add --comment option to add a comment
2024-04-05 10:49:49 -07:00
Junio C Hamano 7424fb7797 Merge branch 'ps/pack-refs-auto' into jt/reftable-geometric-compaction
* ps/pack-refs-auto:
  builtin/gc: pack refs when using `git maintenance run --auto`
  builtin/gc: forward git-gc(1)'s `--auto` flag when packing refs
  t6500: extract objects with "17" prefix
  builtin/gc: move `struct maintenance_run_opts`
  builtin/pack-refs: introduce new "--auto" flag
  builtin/pack-refs: release allocated memory
  refs/reftable: expose auto compaction via new flag
  refs: remove `PACK_REFS_ALL` flag
  refs: move `struct pack_refs_opts` to where it's used
  t/helper: drop pack-refs wrapper
  refs/reftable: print errors on compaction failure
  reftable/stack: gracefully handle failed auto-compaction due to locks
  reftable/stack: use error codes when locking fails during compaction
  reftable/error: discern locked/outdated errors
  reftable/stack: fix error handling in `reftable_stack_init_addition()`
2024-04-05 10:34:23 -07:00
René Scharfe 2b1f456adf apply: don't leak fd on fdopen() error
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-05 10:09:26 -07:00