Commit Graph

69915 Commits

Author SHA1 Message Date
Junio C Hamano
0a8c337394 Merge branch 'sm/ssl-key-type-config'
Add a few configuration variables to tell the cURL library that
different types of ssl-cert and ssl-key are in use.

* sm/ssl-key-type-config:
  http: add support for different sslcert and sslkey types.
2023-04-06 13:38:29 -07:00
Junio C Hamano
87daf40750 Merge branch 'ab/config-multi-and-nonbool'
Assorted config API updates.

* ab/config-multi-and-nonbool:
  for-each-repo: with bad config, don't conflate <path> and <cmd>
  config API: add "string" version of *_value_multi(), fix segfaults
  config API users: test for *_get_value_multi() segfaults
  for-each-repo: error on bad --config
  config API: have *_multi() return an "int" and take a "dest"
  versioncmp.c: refactor config reading next commit
  config API: add and use a "git_config_get()" family of functions
  config tests: add "NULL" tests for *_get_value_multi()
  config tests: cover blind spots in git_die_config() tests
2023-04-06 13:38:29 -07:00
Junio C Hamano
e9dffbc7f1 Merge branch 'ps/fetch-ref-update-reporting'
Clean-up of the code path that reports what "git fetch" did to each
ref.

* ps/fetch-ref-update-reporting:
  fetch: centralize printing of reference updates
  fetch: centralize logic to print remote URL
  fetch: centralize handling of per-reference format
  fetch: pass the full local reference name to `format_display`
  fetch: move output format into `display_state`
  fetch: move reference width calculation into `display_state`
2023-04-06 13:38:28 -07:00
Junio C Hamano
955abf5f72 Merge branch 'jk/unused-post-2.40-part2'
Code clean-up for "-Wunused-parameter" build.

* jk/unused-post-2.40-part2:
  parse-options: drop parse_opt_unknown_cb()
  t/helper: mark unused argv/argc arguments
  mark "argv" as unused when we check argc
  builtins: mark unused prefix parameters
  builtins: annotate always-empty prefix parameters
  builtins: always pass prefix to parse_options()
  fast-import: fix file access when run from subdir
2023-04-06 13:38:28 -07:00
Junio C Hamano
9bc647a2d1 Merge branch 'jk/unused-post-2.40'
More "-Wunused-parameters" code clean-up.

* jk/unused-post-2.40:
  transport: mark unused parameters in fetch_refs_from_bundle()
  http: mark unused parameter in fill_active_slot() callbacks
  http: drop unused parameter from start_object_request()
  mailmap: drop debugging code
2023-04-06 13:38:28 -07:00
Junio C Hamano
ae61aecb9e Merge branch 'jk/document-pack-redundant-deprecation'
Document that we have marked "pack-redundant" as deprecated.

* jk/document-pack-redundant-deprecation:
  pack-redundant: document deprecation
2023-04-06 13:38:28 -07:00
Junio C Hamano
119e82a515 Merge branch 'ps/ahead-behind-truncation-fix'
Fix unnecessary truncation of generation numbers used in-core.

* ps/ahead-behind-truncation-fix:
  commit-graph: fix truncated generation numbers
2023-04-06 13:38:27 -07:00
Junio C Hamano
7727da99df Merge branch 'ds/ahead-behind'
"git for-each-ref" learns '%(ahead-behind:<base>)' that computes the
distances from a single reference point in the history with bunch
of commits in bulk.

* ds/ahead-behind:
  commit-reach: add tips_reachable_from_bases()
  for-each-ref: add ahead-behind format atom
  commit-reach: implement ahead_behind() logic
  commit-graph: introduce `ensure_generations_valid()`
  commit-graph: return generation from memory
  commit-graph: simplify compute_generation_numbers()
  commit-graph: refactor compute_topological_levels()
  for-each-ref: explicitly test no matches
  for-each-ref: add --stdin option
2023-04-06 13:38:21 -07:00
Clement Mabileau
4c643fb321 branch: improve error log on branch not found by checking remotes refs
New git users may want to locally delete remote-tracking branches but
don't really understand how they are distinguished from branches by git.
Then one may naively try:
`git branch -d foo/bar` and get a correct error `branch foo/bar not
found` but hard to understand for a newbie, this patch aims to guide one
in such case.

when failing to delete a branch with `git branch -d <branch>` because
of branch not found, try to find a **remote refs** matching `<branch>`
and if so, add an hint:
`Did you forget --remote?` to the error message

Signed-off-by: Clement Mabileau <mabileau.clement@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-06 13:11:26 -07:00
Jeff King
c1917156a0 t/lib-httpd: pass PERL_PATH to CGI scripts
As discussed in t/README, tests should aim to use PERL_PATH rather than
straight "perl". We usually do this automatically with a "perl" function
in test-lib.sh, but a few cases need to be handled specially.

One such case is the apply-one-time-perl.sh CGI, which invokes plain
"perl". It should be using $PERL_PATH, but to make that work, we must
also instruct Apache to pass through the variable.

Prior to this patch, doing:

  mv /usr/bin/perl /usr/bin/my-perl
  make PERL_PATH=/usr/bin/my-perl test

would fail t5702, t5703, and t5616. After this it passes. This is a
pretty extreme case, as even if you install perl elsewhere, you'd likely
still have it in your $PATH. A more realistic case is that you don't
want to use the perl in your $PATH (because it's older, broken, etc) and
expect PERL_PATH to consistently override that (since that's what it's
documented to do). Removing it completely is just a convenient way of
completely breaking it for testing purposes.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-06 09:29:43 -07:00
Felipe Contreras
8806120de6 doc: asciidoc: remove custom header macro
In 2007 we added a custom header macro to provide version information
7ef195ba3e (Documentation: Add version information to man pages,
2007-03-25),

However, in 2008 asciidoc added the attributes to do this properly [1].

This was not implemented in Git until 2019: 226daba280 (Doc/Makefile:
give mansource/-version/-manual attributes, 2019-09-16).

But in 2023 we are doing it properly, so there's no need for the custom
macro.

[1] https://github.com/asciidoc-py/asciidoc-py/commit/ad78a3c

Cc: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-05 21:37:45 -07:00
Tao Klerks
42943b950e mergetool: new config guiDefault supports auto-toggling gui by DISPLAY
When no merge.tool or diff.tool is configured or manually selected, the
selection of a default tool is sensitive to the DISPLAY variable; in a
GUI session a gui-specific tool will be proposed if found, and
otherwise a terminal-based one. This "GUI-optimizing" behavior is
important because a GUI can make a huge difference to a user's ability
to understand and correctly complete a non-trivial conflicting merge.

Some time ago the merge.guitool and diff.guitool config options were
introduced to enable users to configure both a GUI tool, and a non-GUI
tool (with fallback if no GUI tool configured), in the same environment.

Unfortunately, the --gui argument introduced to support the selection of
the guitool is still explicit. When using configured tools, there is no
equivalent of the no-tool-configured "propose a GUI tool if we are in a GUI
environment" behavior.

As proposed in <xmqqmtb8jsej.fsf@gitster.g>, introduce new configuration
options, difftool.guiDefault and mergetool.guiDefault, supporting a special
value "auto" which causes the corresponding tool or guitool to be selected
depending on the presence of a non-empty DISPLAY value. Also support "true"
to say "default to the guitool (unless --no-gui is passed on the
commandline)", and "false" as the previous default behavior when these new
configuration options are not specified.

Signed-off-by: Tao Klerks <tao@klerks.biz>
Acked-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-05 21:03:29 -07:00
Daniel Watson
d0ea2ca1cf SubmittingPatches: clarify MUA discussion with "the"
Without the word "the", the sentence is a little harder to read. The
word "the" makes it clearer that the comment refers to discrete patches,
and not portions of individual patches.

Signed-off-by: Daniel Watson <ozzloy@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-05 14:50:25 -07:00
Felipe Contreras
092df21dfc doc: remove manpage-base-url workaround
Commit 50d9bbba92 (Documentation: Avoid use of xmlto --stringparam,
2009-12-04) introduced manpage-base-url.xsl because ancient versions of
xmlto did not have --stringparam.

However, that was more than ten years ago, no need for that complexity
anymore, we can just use --stringparam.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-05 14:18:53 -07:00
Junio C Hamano
8b214c2e9d clone: propagate object-format when cloning from void
A user could prepare an empty repository and set it to use SHA256 as
the object format.  The new repository created by "git clone" from
such a repository however would not record that it is expecting
objects in the same SHA256 format.  This works as expected if the
source repository is not empty.

Just like we started copying the name of the primary branch from the
remote repository even if it is unborn in 3d8314f8 (clone: propagate
empty remote HEAD even with other branches, 2022-07-07), lift the
code that records the object format out of the block executed only
when cloning from an instantiated repository, so that it works also
when cloning from an empty repository.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-05 14:17:00 -07:00
Junio C Hamano
ae73b2c8f1 The seventh batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-04 14:28:29 -07:00
Junio C Hamano
5e4070e128 Merge branch 'jk/really-deprecate-pack-redundant'
"git pack-redundant" gave a warning when run, as the command has
outlived its usefulness long ago and is nominated for future
removal.  Now we escalate to give an error.

* jk/really-deprecate-pack-redundant:
  pack-redundant: escalate deprecation warning to an error
2023-04-04 14:28:29 -07:00
Junio C Hamano
abb3b692a4 Merge branch 'jk/document-rev-list-object-name'
Document what the pathname-looking strings in "rev-list --object"
output are for and what they mean.

* jk/document-rev-list-object-name:
  docs: document caveats of rev-list's object-name output
2023-04-04 14:28:29 -07:00
Junio C Hamano
45602dd029 Merge branch 'ar/test-cleanup-unused-file-creation'
Test clean-up.

* ar/test-cleanup-unused-file-creation:
  t1507: assert output of rev-parse
  t1404: don't create unused file
  t1400: assert output of update-ref
  t1302: don't create unused file
  t1010: don't create unused files
  t1006: assert error output of cat-file
  t1005: assert output of ls-files
2023-04-04 14:28:29 -07:00
Junio C Hamano
054ae834a8 Merge branch 'ob/sequencer-save-head-simplify'
Code clean-up.

* ob/sequencer-save-head-simplify:
  sequencer: rewrite save_head() in terms of write_message()
2023-04-04 14:28:29 -07:00
Junio C Hamano
0ee87cde28 Merge branch 'ob/rollback-after-commit-lock-failure'
Code clean-up.

* ob/rollback-after-commit-lock-failure:
  sequencer: remove pointless rollback_lock_file()
2023-04-04 14:28:28 -07:00
Junio C Hamano
62df03c277 Merge branch 'jk/blame-contents-with-arbitrary-commit'
"git blame --contents=<file> <rev> -- <path>" used to be forbidden,
but now it finds the origins of lines starting at <file> contents
through the history that leads to <rev>.

* jk/blame-contents-with-arbitrary-commit:
  blame: allow --contents to work with non-HEAD commit
2023-04-04 14:28:28 -07:00
Junio C Hamano
6dd9d96129 Merge branch 'rs/archive-mtime'
Test update.

* rs/archive-mtime:
  t5000: use check_mtime()
2023-04-04 14:28:28 -07:00
Junio C Hamano
9142fce9b0 Merge branch 'ah/rebase-merges-config'
Streamline --rebase-merges command line option handling and
introduce rebase.merges configuration variable.

* ah/rebase-merges-config:
  rebase: add a config option for --rebase-merges
  rebase: deprecate --rebase-merges=""
  rebase: add documentation and test for --no-rebase-merges
2023-04-04 14:28:28 -07:00
Junio C Hamano
7e13d654c2 Merge branch 'jk/fast-export-cleanup'
Code clean-up.

* jk/fast-export-cleanup:
  fast-export: drop unused parameter from anonymize_commit_message()
  fast-export: drop data parameter from anonymous generators
  fast-export: de-obfuscate --anonymize-map handling
  fast-export: factor out anonymized_entry creation
  fast-export: simplify initialization of anonymized hashmaps
  fast-export: drop const when storing anonymized values
2023-04-04 14:28:27 -07:00
Junio C Hamano
f315a8b609 Merge branch 'js/split-index-fixes'
The index files can become corrupt under certain conditions when
the split-index feature is in use, especially together with
fsmonitor, which have been corrected.

* js/split-index-fixes:
  unpack-trees: take care to propagate the split-index flag
  fsmonitor: avoid overriding `cache_changed` bits
  split-index; stop abusing the `base_oid` to strip the "link" extension
  split-index & fsmonitor: demonstrate a bug
2023-04-04 14:28:27 -07:00
Junio C Hamano
f834089925 Merge branch 'pw/wildmatch-fixes'
The wildmatch library code unlearns exponential behaviour it
acquired some time ago since it was borrowed from rsync.

* pw/wildmatch-fixes:
  t3070: make chain lint tester happy
  wildmatch: hide internal return values
  wildmatch: avoid undefined behavior
  wildmatch: fix exponential behavior
2023-04-04 14:28:27 -07:00
Shuqi Liang
1a65b41b38 write-tree: integrate with sparse index
Update 'git write-tree' to allow using the sparse-index in memory
without expanding to a full one.

The recursive algorithm for update_one() was already updated in 2de37c5
(cache-tree: integrate with sparse directory entries, 2021-03-03) to
handle sparse directory entries in the index. Hence we can just set the
requires-full-index to false for "write-tree".

The `p2000` tests demonstrate a ~96% execution time reduction for 'git
write-tree' using a sparse index:

Test                                           before  after
-----------------------------------------------------------------
2000.78: git write-tree (full-v3)              0.34    0.33 -2.9%
2000.79: git write-tree (full-v4)              0.32    0.30 -6.3%
2000.80: git write-tree (sparse-v3)            0.47    0.02 -95.8%
2000.81: git write-tree (sparse-v4)            0.45    0.02 -95.6%

Signed-off-by: Shuqi Liang <cheskaqiqi@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-04 12:50:54 -07:00
Raghul Nanth A
748b8d669a describe: enable sparse index for describe
git describe compares the index with the working tree when (and only
when) it is run with the "--dirty" flag. This is done by the
run_diff_index() function. The function has been made aware of the
sparse-index in the series that led to 8d2c3732 (Merge branch
'ld/sparse-diff-blame', 2021-12-21). Hence we can just set the
requires-full-index to false for "describe".

Performance metrics

  Test                                                     HEAD~1            HEAD
  -------------------------------------------------------------------------------------------------
  2000.2: git describe --dirty (full-v3)                   0.08(0.09+0.01)   0.08(0.06+0.03) +0.0%
  2000.3: git describe --dirty (full-v4)                   0.09(0.07+0.03)   0.08(0.05+0.04) -11.1%
  2000.4: git describe --dirty (sparse-v3)                 0.88(0.82+0.06)   0.02(0.01+0.05) -97.7%
  2000.5: git describe --dirty (sparse-v4)                 0.68(0.60+0.08)   0.02(0.02+0.04) -97.1%
  2000.6: echo >>new && git describe --dirty (full-v3)     0.08(0.04+0.05)   0.08(0.05+0.04) +0.0%
  2000.7: echo >>new && git describe --dirty (full-v4)     0.08(0.07+0.03)   0.08(0.05+0.04) +0.0%
  2000.8: echo >>new && git describe --dirty (sparse-v3)   0.75(0.69+0.07)   0.02(0.03+0.03) -97.3%
  2000.9: echo >>new && git describe --dirty (sparse-v4)   0.81(0.73+0.09)   0.02(0.01+0.05) -97.5%

Signed-off-by: Raghul Nanth A <nanth.raghul@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-03 11:30:23 -07:00
Alex Henrie
f024913164 format-patch: correct documentation of --thread without an argument
In Git, almost all command line flags unconditionally override the
corresponding config option.[1] Add a test to confirm that this is the
case for `git format-patch --thread`.

[1] https://lore.kernel.org/git/CAMMLpeS3+NUQa2oqpHKVo3yWQNVMgkEXrs4U5_ggvk31yQbezQ@mail.gmail.com/

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-03 09:59:20 -07:00
Jiang Xin
dc12ee77ab object-info: init request_info before reading arg
When retrieving object info via capability "object-info", we store the
command args into a requested_info variable, but forget to initialize
it. Initialize the variable before use to prevent unexpected output.

Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-03 09:32:02 -07:00
Junio C Hamano
ba4324c4e1 e-mail workflow: Message-ID is spelled with ID in both capital letters
We used to write "Message-Id:" and "Message-ID:" pretty much
interchangeably, and the header name is defined to be case
insensitive by the RFCs, but the canonical form "Message-ID:" is
used throughout the RFC documents, so let's imitate it ourselves.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
2023-04-03 08:55:43 -07:00
Junio C Hamano
140b9478da The sixth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-31 17:50:32 -07:00
Junio C Hamano
e5b6fc627e Merge branch 'ss/hashmap-typofix'
Typofix.

* ss/hashmap-typofix:
  hashmap.h: fix minor typo
2023-03-31 17:50:24 -07:00
Junio C Hamano
290a973bb9 Merge branch 'ds/p2000-fix-grep-sparse'
Fix perf test.

* ds/p2000-fix-grep-sparse:
  p2000: remove stray '--sparse' flag from test
2023-03-31 17:50:23 -07:00
Junio C Hamano
5c93cfdafd Merge branch 'kh/commentchar-config-error-message'
Doc update.

* kh/commentchar-config-error-message:
  config: tell the user that we expect an ASCII character
2023-03-31 17:50:23 -07:00
Junio C Hamano
0d865049f7 Merge branch 'ab/retire-scripted-add-p'
Test fix.

* ab/retire-scripted-add-p:
  t3701: we don't need no Perl for `add -i` anymore
2023-03-31 17:50:23 -07:00
Junio C Hamano
dd88a1af1a Merge branch 'js/t5563-portability-fix'
Test portability fix.

* js/t5563-portability-fix:
  t5563: prevent "ambiguous redirect"
2023-03-31 17:50:23 -07:00
Junio C Hamano
5ae4bd14be Merge branch 'bb/unicode-width-table-15'
Update width table for the latest edition of Unicode.

* bb/unicode-width-table-15:
  unicode: update the width tables to Unicode 15
2023-03-31 17:50:23 -07:00
Andrei Rybak
1ec40a83a5 t2107: fix mention of the_index.cache_changed
Commit [1] added a test to t2107-update-index-basic.sh with a comment
that mentions macro "active_cache_changed".  Later in [2], the macro was
removed and its usage in function cmd_update_index in file
builtin/update-index.c was replaced with "the_index.cache_changed".

Fix the outdated comment in file t2107-update-index-basic.sh.

[1] fa137f67a4 (lockfile.c: store absolute path, 2014-11-02)
[2] dc594180d9 (cocci & cache.h: apply variable section of "pending"
    index-compatibility, 2022-11-19)

Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-31 16:57:04 -07:00
Andrei Rybak
993d7085be t3060: fix mention of function prune_index
Commit [1] added tests which trigger function prune_cache.  The comments
in these tests, however, incorrectly call it "prune_path".  Since then,
function "prune_cache" has been renamed to "prune_index" in commit [2].
Later still in commit [3], the_index singleton, which is also mentioned
in a comment, stopped being used directly with function "prune_index".

Fix mentions of function "prune_index" and the struct it changes in
comments in file "t3060-ls-files-with-tree.sh".

[1] 54e1abce90 (Add test case for ls-files --with-tree, 2007-10-03)
[2] 6510ae173a (ls-files: convert prune_cache to take an index,
    2017-06-12)
[3] 188dce131f (ls-files: use repository object, 2017-06-22)

Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-31 16:57:03 -07:00
Derrick Stolee
25bccb4b79 fetch: download bundles once, even with --all
When fetch.bundleURI is set, 'git fetch' downloads bundles from the
given bundle URI before fetching from the specified remote. However,
when using non-file remotes, 'git fetch --all' will launch 'git fetch'
subprocesses which then read fetch.bundleURI and fetch the bundle list
again. We do not expect the bundle list to have new information during
these multiple runs, so avoid these extra calls by un-setting
fetch.bundleURI in the subprocess arguments.

Be careful to skip fetching bundles for the empty bundle string.
Fetching bundles from the empty list presents some interesting test
failures.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-31 10:07:33 -07:00
Johannes Schindelin
92c7b3d473 t5563: prevent "ambiguous redirect"
When I ran this test using `TEST_SHELL_PATH=/bin/bash` in my Ubuntu
setup (where Bash is at version 5.0.17(1)-release), I was greeted with
this error message:

	./test-lib.sh: line 1072: $CHALLENGE: ambiguous redirect

This commit fixes that error by quoting the `CHALLENGE` variable (which
has as value a path containing spaces), and by avoiding to cuddle the
empty string parameter in the `printf` call with the redirect character
(in fact, the `printf ''>$CHALLENGE` is removed because the next line
overwrites the file anyway because it _also_ uses a single `>` to
redirect the output).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-31 08:50:30 -07:00
Junio C Hamano
6369acd968 The fifth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-30 13:47:19 -07:00
Junio C Hamano
d35cd54a23 Merge branch 'mk/workaround-pcre-jit-ucp-bug'
A recent-ish change to allow unicode character classes to be used
with "grep -P" triggered a JIT bug in older pcre2 libraries.
The problematic change in Git built with these older libraries has
been disabled to work around the bug.

* mk/workaround-pcre-jit-ucp-bug:
  grep: work around UTF-8 related JIT bug in PCRE2 <= 10.34
2023-03-30 13:47:12 -07:00
Junio C Hamano
a15b8451f2 Merge branch 'jc/am-doc-refer-to-format-patch'
Doc update.

* jc/am-doc-refer-to-format-patch:
  am: refer to format-patch in the documentation
2023-03-30 13:47:12 -07:00
Junio C Hamano
5f6f7a48da Merge branch 'sg/parse-options-h-initializers'
Code clean-up to use designated initializers in parse-options API.

* sg/parse-options-h-initializers:
  parse-options.h: use designated initializers in OPT_* macros
  parse-options.h: rename _OPT_CONTAINS_OR_WITH()'s parameters
  parse-options.h: use consistent name for the callback parameters
2023-03-30 13:47:12 -07:00
Junio C Hamano
dbb4102f7b Merge branch 'sg/parse-options-h-users'
Code clean-up to include and/or uninclude parse-options.h file as
needed.

* sg/parse-options-h-users:
  treewide: remove unnecessary inclusions of parse-options.h from headers
  treewide: include parse-options.h in source files
2023-03-30 13:47:11 -07:00
Jeff King
cc48ddd937 tests: skip test_eval_ in internal chain-lint
To check for broken &&-chains, we run "fail_117 && $1" as a test
snippet, and check the exit code. We use test_eval_ to do so, because
that's the way we run the actual test.

But we don't need any of its niceties, like "set -x" tracing. In fact,
they hinder us, because we have to explicitly disable them. So let's
skip that and use "eval" more directly, which is simpler. I had hoped it
would also be faster, but it doesn't seem to produce a measurable
improvement (probably because it's just running internal shell commands,
with no subshells or forks).

Note that there is one gotcha: even though we don't intend to run any of
the commands if the &&-chain is intact, an error like this:

   test_expect_success 'broken' '
	# this next line breaks the &&-chain
	true
	# and then this one is executed even by the linter
	return 1
   '

means we'll "return 1" from the eval, and thus from test_run_(). We
actually do notice this in test_expect_success, but only by saying "hey,
this test didn't say it was OK, so it must have failed", which is not
right (it should say "broken &&-chain").

We can handle this by calling test_eval_inner_() instead, which is our
trick for wrapping "return" in a test snippet. But to do that, we have
to push the trace code out of that inner function and into test_eval_().
This is arguably where it belonged in the first place, but it never
mattered because the "inner_" function had only one caller.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-30 13:07:29 -07:00
Jeff King
750b260411 tests: drop here-doc check from internal chain-linter
Commit 99a64e4b73 (tests: lint for run-away here-doc, 2017-03-22)
tweaked the chain-lint test to catch unclosed here-docs. It works by
adding an extra "echo" command after the test snippet, and checking that
it is run (if it gets swallowed by a here-doc, naturally it is not run).

The downside here is that we introduced an extra $() substitution, which
happens in a subshell. This has a measurable performance impact when
run for many tests.

The tradeoff in safety was undoubtedly worth it when 99a64e4b73 was
written. But since the external chainlint.pl learned to find these
recently, we can just rely on it. By switching back to a simpler
chain-lint, hyperfine reports a measurable speedup on t3070 (which has
1800 tests):

  'HEAD' ran
    1.12 ± 0.01 times faster than 'HEAD~1'

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-30 13:07:29 -07:00