Commit Graph

16415 Commits

Author SHA1 Message Date
Junio C Hamano
845c48a16a The seventeenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-23 15:34:09 -07:00
Junio C Hamano
95c79efb8d Merge branch 'ds/scalar-no-maintenance'
Two "scalar" subcommands that adds a repository that hasn't been
under "scalar"'s control are taught an option not to enable the
scheduled maintenance on it.

* ds/scalar-no-maintenance:
  scalar reconfigure: improve --maintenance docs
  scalar reconfigure: add --maintenance=<mode> option
  scalar clone: add --no-maintenance option
  scalar register: add --no-maintenance option
  scalar: customize register_dir()'s behavior
2025-05-23 15:34:07 -07:00
Junio C Hamano
8613c2bb6c The sixteenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-19 16:02:48 -07:00
Junio C Hamano
ae0b60e009 Merge branch 'ag/doc-send-email'
The `send-email` documentation has been updated with OAuth2.0
related examples.

* ag/doc-send-email:
  docs: add credential helper for outlook and gmail in OAuth list of helpers
  docs: improve send-email documentation
  send-mail: improve checks for valid_fqdn
2025-05-19 16:02:45 -07:00
Junio C Hamano
4bb72548fc Merge branch 'sc/bundle-uri-use-all-refs-in-bundle'
Bundle-URI feature did not use refs recorded in the bundle other
than normal branches as anchoring points to optimize the follow-up
fetch during "git clone"; now it is told to utilize all.

* sc/bundle-uri-use-all-refs-in-bundle:
  bundle-uri: add test for bundle-uri clones with tags
  bundle-uri: copy all bundle references ino the refs/bundle space
2025-05-19 16:02:45 -07:00
Junio C Hamano
cb96e1697a The fifteenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-15 17:27:23 -07:00
Junio C Hamano
4dda60c9df Merge branch 'ps/maintenance-missing-tasks'
Make repository clean-up tasks "gc" can do available to "git
maintenance" front-end.

* ps/maintenance-missing-tasks:
  builtin/maintenance: introduce "rerere-gc" task
  builtin/gc: move rerere garbage collection into separate function
  builtin/maintenance: introduce "worktree-prune" task
  builtin/gc: move pruning of worktrees into a separate function
  builtin/gc: remove global variables where it is trivial to do
  builtin/gc: fix indentation of `cmd_gc()` parameters
2025-05-15 17:24:56 -07:00
Derrick Stolee
e918917360 scalar reconfigure: improve --maintenance docs
The --maintenance option for 'scalar reconfigure' has three possible
values. Improve the documentation by specifying the option in the -h
help menu and usage information.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-14 12:18:12 -07:00
Junio C Hamano
1a8a4971cc The fourteenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-13 14:05:18 -07:00
Junio C Hamano
acfcd7ca93 Merge branch 'kh/docfixes'
Docfixes.

* kh/docfixes:
  doc: branch: fix inline-verbatim
  doc: reflog: fix `drop` subheading
2025-05-13 14:05:07 -07:00
Junio C Hamano
38af977b81 The thirteenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-12 14:22:59 -07:00
Junio C Hamano
38758be7fa Merge branch 'ag/send-email-outlook'
Update send-email to work better with Outlook's smtp server.

* ag/send-email-outlook:
  send-email: add --[no-]outlook-id-fix option
  send-email: retrieve Message-ID from outlook SMTP server
2025-05-12 14:22:48 -07:00
Junio C Hamano
1ee85f0e21 The twelfth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-08 12:36:32 -07:00
Aditya Garg
ba998f6107 docs: add credential helper for outlook and gmail in OAuth list of helpers
This commit adds the `git-credential-outlook` and `git-credential-gmail`
helpers to the list of OAuth helpers.

Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-08 11:07:07 -07:00
Aditya Garg
d6c63a798f docs: improve send-email documentation
OAuth2.0 is a new authentication method that is being used by many email
providers, including Outlook and Gmail. Recently, the Authen::SASL perl
module has been updated to support OAuth2.0 authentication, thus making
the git-send-email script be able to use this authentication method as
well. So lets improve the documentation to reflect this change.

I also had a hard time finding a reliable OAuth2.0 access token
generator for Outlook and Gmail. So I added a link to the such
generators which I developed myself after seaching through lots of code
and API documentation to make things easier for others.

Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-08 11:07:07 -07:00
Derrick Stolee
a34fef86e0 scalar reconfigure: add --maintenance=<mode> option
When users want to enable the latest and greatest configuration options
recommended by Scalar after a Git upgrade, 'scalar reconfigure --all' is
a great option that iterates over all repos in the multi-valued
'scalar.repos' config key.

However, this feature previously forced users to enable background
maintenance. In some environments this is not preferred.

Add a new --maintenance=<mode> option to 'scalar reconfigure' that
provides options for enabling (default), disabling, or leaving
background maintenance config as-is.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-07 14:04:32 -07:00
Derrick Stolee
882ce0c475 scalar clone: add --no-maintenance option
When creating a new enlistment via 'scalar clone', the default is to set
up situations that work for most user scenarios. Background maintenance
is one of those highly-recommended options for most users.

However, when using 'scalar clone' to create an enlistment in a
different situation, such as prepping a VM image, it may be valuable to
disable background maintenance so the manual maintenance steps do not
get blocked by concurrent background maintenance activities.

Add a new --no-maintenance option to 'scalar clone'.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-07 14:04:31 -07:00
Derrick Stolee
9816e24a78 scalar register: add --no-maintenance option
When registering a repository with Scalar to get the latest opinionated
configuration, the 'scalar register' command will also set up background
maintenance. This is a recommended feature for most user scenarios.

However, this is not always recommended in some scenarios where
background modifications may interfere with foreground activities.
Specifically, setting up a clone for use in automation may require doing
certain maintenance steps in the foreground that could become blocked by
concurrent background maintenance operations.

Allow the user to specify --no-maintenance to 'scalar register'. This
requires updating the method prototype for register_dir(), so use the
default of enabling this value when otherwise specified.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-07 14:04:31 -07:00
Patrick Steinhardt
283621a553 builtin/maintenance: introduce "rerere-gc" task
While git-gc(1) knows to garbage collect the rerere cache,
git-maintenance(1) does not yet have a task for this cleanup. Introduce
a new "rerere-gc" task to plug this gap.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-07 10:50:15 -07:00
Patrick Steinhardt
ec31474656 builtin/maintenance: introduce "worktree-prune" task
While git-gc(1) knows to prune stale worktrees, git-maintenance(1) does
not yet have a task for this cleanup. Introduce a new "worktree-prune"
task to plug this gap.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-07 10:50:14 -07:00
Junio C Hamano
6f84262c44 The eleventh batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-05 14:56:25 -07:00
Kristoffer Haugsbakk
4ae2a3b418 doc: branch: fix inline-verbatim
7b399322a2 (doc: apply new format to git-branch man page, 2025-03-19)
updated the formatting for this doc to, among other things, use backtick
for some elements.  In the process `è` was used by accident instead
of backtick.

Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-05 10:48:07 -07:00
Kristoffer Haugsbakk
d78e8e9430 doc: reflog: fix drop subheading
The tilde (~) count doesn’t match the length of the heading.  In turn
you get a bunch of `<sub>~</sub>` instead of the intended `<h3>` in the
HTML output.

Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-05-05 10:48:07 -07:00
Junio C Hamano
6c0bd1fc70 The tenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-29 14:21:34 -07:00
Junio C Hamano
27bd8ee311 Merge branch 'ps/fewer-perl'
Reduce requirement for Perl in our documentation build and a few
scripts.

* ps/fewer-perl:
  Documentation: stop depending on Perl to generate command list
  Documentation: stop depending on Perl to massage user manual
  request-pull: stop depending on Perl
  filter-branch: stop depending on Perl
2025-04-29 14:21:31 -07:00
Junio C Hamano
a819a3da85 Merge branch 'ps/reftable-api-revamp'
Overhaul of the reftable API.

* ps/reftable-api-revamp:
  reftable/table: move printing logic into test helper
  reftable/constants: make block types part of the public interface
  reftable/table: introduce iterator for table blocks
  reftable/table: add `reftable_table` to the public interface
  reftable/block: expose a generic iterator over reftable records
  reftable/block: make block iterators reseekable
  reftable/block: store block pointer in the block iterator
  reftable/block: create public interface for reading blocks
  git-zlib: use `struct z_stream_s` instead of typedef
  reftable/block: rename `block_reader` to `reftable_block`
  reftable/block: rename `block` to `block_data`
  reftable/table: move reading block into block reader
  reftable/block: simplify how we track restart points
  reftable/blocksource: consolidate code into a single file
  reftable/reader: rename data structure to "table"
  reftable: fix formatting of the license header
2025-04-29 14:21:30 -07:00
Aditya Garg
daec3c08e3 send-email: add --[no-]outlook-id-fix option
Add an option to allow users to specifically enable or disable
retrieving the Message-ID from the Outlook SMTP server. This can be used
for other hosts mimicking the behaviour of Outlook, or for users who set
a custom domain to be a CNAME for the Outlook SMTP server.

While at it, lets also add missing * in description of --no-smtp-auth.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-29 10:06:52 -07:00
Scott Chacon
c858c6442b bundle-uri: copy all bundle references ino the refs/bundle space
When downloading bundles via the bundle-uri functionality, we only copy the
references from refs/heads into the refs/bundle space. I'm not sure why this
refspec is hardcoded to be so limited, but it makes the ref negotiation on
the subsequent fetch suboptimal, since it won't use objects that are
referenced outside of the current heads of the bundled repository.

This change to copy everything in refs/ in the bundle to refs/bundles/
significantly helps the subsequent fetch, since nearly all the references
are now included in the negotiation.

The update to the bundle-uri unbundling refspec puts all the heads from a
bundle file into refs/bundle/heads instead of directly into refs/bundle/ so
the tests also need to be updated to look in the new heirarchy.

Signed-off-by: Scott Chacon <schacon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-25 13:36:45 -07:00
Junio C Hamano
f65182a99e The ninth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-24 17:27:03 -07:00
Junio C Hamano
028c43269e Merge branch 'rj/build-tweaks'
Various build tweaks, including CSPRNG selection on some platforms.

* rj/build-tweaks:
  config.mak.uname: set CSPRNG_METHOD to getrandom on Linux
  config.mak.uname: add arc4random to the cygwin build
  config.mak.uname: add sysinfo() configuration for cygwin
  builtin/gc.c: correct RAM calculation when using sysinfo
  config.mak.uname: add clock_gettime() to the cygwin build
  config.mak.uname: add HAVE_GETDELIM to the cygwin section
  config.mak.uname: only set NO_REGEX on cygwin for v1.7
  config.mak.uname: add a note about NO_STRLCPY for Linux
  Makefile: remove NEEDS_LIBRT build variable
  meson.build: set default help format to html on windows
  meson.build: only set build variables for non-default values
  Makefile: only set some BASIC_CFLAGS when RUNTIME_PREFIX is set
  meson.build: remove -DCURL_DISABLE_TYPECHECK
2025-04-24 17:25:34 -07:00
Junio C Hamano
2bc5414c41 Merge branch 'ps/parse-options-integers'
Update parse-options API to catch mistakes to pass address of an
integral variable of a wrong type/size.

* ps/parse-options-integers:
  parse-options: detect mismatches in integer signedness
  parse-options: introduce precision handling for `OPTION_UNSIGNED`
  parse-options: introduce precision handling for `OPTION_INTEGER`
  parse-options: rename `OPT_MAGNITUDE()` to `OPT_UNSIGNED()`
  parse-options: support unit factors in `OPT_INTEGER()`
  global: use designated initializers for options
  parse: fix off-by-one for minimum signed values
2025-04-24 17:25:34 -07:00
Junio C Hamano
68e5342e19 Merge branch 'ds/doc-disable-hooks'
Document the convention to disable hooks altogether by setting the
hooksPath configuration variable to /dev/nulll

* ds/doc-disable-hooks:
  docs: document core.hooksPath=/dev/null
2025-04-24 17:25:33 -07:00
Junio C Hamano
a2955b34f4 The eighth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-23 13:58:51 -07:00
Junio C Hamano
29860f3282 Merge branch 'ja/doc-reset-mv-rm-markup-updates'
Doc mark-up updates.

* ja/doc-reset-mv-rm-markup-updates:
  doc: add markup for characters in Guidelines
  doc: fix asciidoctor synopsis processing of triple-dots
  doc: convert git-mv to new documentation format
  doc: move synopsis git-mv commands in the synopsis section
  doc: convert git-rm to new documentation format
  doc: fix synopsis analysis logic
  doc: convert git-reset to new documentation format
2025-04-23 13:58:51 -07:00
Junio C Hamano
4bbb303af6 The seventh batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-17 10:28:20 -07:00
Junio C Hamano
c3ebf18eb2 Merge branch 'en/merge-recursive-debug'
Remove remnants of the recursive merge strategy backend, which was
superseded by the ort merge strategy.

* en/merge-recursive-debug:
  builtin/{merge,rebase,revert}: remove GIT_TEST_MERGE_ALGORITHM
  tests: remove GIT_TEST_MERGE_ALGORITHM and test_expect_merge_algorithm
  merge-recursive.[ch]: thoroughly debug these
  merge, sequencer: switch recursive merges over to ort
  sequencer: switch non-recursive merges over to ort
  merge-ort: enable diff-algorithms other than histogram
  builtin/merge-recursive: switch to using merge_ort_generic()
  checkout: replace merge_trees() with merge_ort_nonrecursive()
2025-04-17 10:28:18 -07:00
Junio C Hamano
fe7ae3b87e Merge branch 'kn/blame-porcelain-unblamable'
"git blame --porcelain" mode now talks about unblamable lines and
lines that are blamed to an ignored commit.

* kn/blame-porcelain-unblamable:
  blame: print unblamable and ignored commits in porcelain mode
2025-04-17 10:28:18 -07:00
Junio C Hamano
b45113f581 Merge branch 'jk/fetch-follow-remote-head-fix'
"git fetch [<remote>]" with only the configured fetch refspec
should be the only thing to update refs/remotes/<remote>/HEAD,
but the code was overly eager to do so in other cases.

* jk/fetch-follow-remote-head-fix:
  fetch: make set_head() call easier to read
  fetch: don't ask for remote HEAD if followRemoteHEAD is "never"
  fetch: only respect followRemoteHEAD with configured refspecs
2025-04-17 10:28:17 -07:00
Patrick Steinhardt
785c17df78 parse-options: rename OPT_MAGNITUDE() to OPT_UNSIGNED()
With the preceding commit, `OPT_INTEGER()` has learned to support unit
factors. Consequently, the major differencen between `OPT_INTEGER()` and
`OPT_MAGNITUDE()` isn't the support of unit factors anymore, as both of
them do support them now. Instead, the difference is that one handles
signed and the other handles unsigned integers.

Adapt the name of `OPT_MAGNITUDE()` accordingly by renaming it to
`OPT_UNSIGNED()`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-17 08:15:15 -07:00
Patrick Steinhardt
8ff1a34bdf parse-options: support unit factors in OPT_INTEGER()
There are two main differences between `OPT_INTEGER()` and
`OPT_MAGNITUDE()`:

  - The former parses signed integers whereas the latter parses unsigned
    integers.

  - The latter parses unit factors like 'k', 'm' or 'g'.

While the first difference makes obvious sense, there isn't really a
good reason why signed integers shouldn't support unit factors, too.

This inconsistency will also become a bit of a problem with subsequent
commits, where we will fix a couple of callsites that pass an unsigned
integer to `OPT_INTEGER()`. There are three options:

  - We could adapt those users to instead pass a signed integer, but
    this would needlessly extend the range of accepted integer values.

  - We could convert them to use `OPT_MAGNITUDE()`, as it only accepts
    unsigned integers. But now we have the inconsistency that we also
    start to accept unit factors.

  - We could introduce `OPT_UNSIGNED()` as equivalent to `OPT_INTEGER()`
    so that it knows to only accept unsigned integers without unit
    suffix.

Introducing a whole new option type feels a bit excessive. There also
isn't really a good reason why `OPT_INTEGER()` cannot be extended to
also accept unit factors: all valid values passed to such options cannot
have a unit factors right now, so there wouldn't be any ambiguity.

Refactor `OPT_INTEGER()` to use `git_parse_int()`, which knows to
interpret unit factors. This removes the inconsistency between the
signed and unsigned options so that we can easily fix up callsites that
pass the wrong integer type right now.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-17 08:15:15 -07:00
Ramsay Jones
65e3757c24 meson.build: only set build variables for non-default values
Some preprocessor -Defines have defaults set in the source code when
they have not been provided to the C compiler. In this case, there is
no need to pass them on the command-line, unless the build requires a
non-standard value.

The build variables for DEFAULT_EDITOR and DEFAULT_PAGER have appropriate
defaults ('vi' and 'less') set in the code. Add the preprocessor -Defines
to the 'libgit_c_args' only if the values set with the corresponding
'options' are different to these standard values.

Also, the 'git-var' documentation contains some conditional text which
documents the chosen compiled in value, which would not read well for
the standard values. Similar to the above, only add the corresponding
'-a' attribute arguments to the 'asciidoc_common_options' variable, if
the values set in the 'options' are different to these standard values.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-16 20:43:43 -07:00
Junio C Hamano
c152ae3ef5 The sixth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-16 13:54:47 -07:00
Junio C Hamano
a271b05066 Merge branch 'ps/cat-file-filter-batch'
"git cat-file --batch" and friends learned to allow "--filter=" to
omit certain objects, just like the transport layer does.

* ps/cat-file-filter-batch:
  builtin/cat-file: use bitmaps to efficiently filter by object type
  builtin/cat-file: deduplicate logic to iterate over all objects
  pack-bitmap: introduce function to check whether a pack is bitmapped
  pack-bitmap: add function to iterate over filtered bitmapped objects
  pack-bitmap: allow passing payloads to `show_reachable_fn()`
  builtin/cat-file: support "object:type=" objects filter
  builtin/cat-file: support "blob:limit=" objects filter
  builtin/cat-file: support "blob:none" objects filter
  builtin/cat-file: wire up an option to filter objects
  builtin/cat-file: introduce function to report object status
  builtin/cat-file: rename variable that tracks usage
2025-04-16 13:54:21 -07:00
Junio C Hamano
8f490db4e2 Merge branch 'jt/help-sha-backend-info-in-build-options'
"git help --build-options" reports SHA-1 and SHA-256 backends used
in the build.

* jt/help-sha-backend-info-in-build-options:
  help: include unsafe SHA-1 build info in version
  help: include SHA implementation in version info
2025-04-16 13:54:20 -07:00
Junio C Hamano
47478802da Merge branch 'kn/non-transactional-batch-updates'
Updating multiple references have only been possible in all-or-none
fashion with transactions, but it can be more efficient to batch
multiple updates even when some of them are allowed to fail in a
best-effort manner.  A new "best effort batches of updates" mode
has been introduced.

* kn/non-transactional-batch-updates:
  update-ref: add --batch-updates flag for stdin mode
  refs: support rejection in batch updates during F/D checks
  refs: implement batch reference update support
  refs: introduce enum-based transaction error types
  refs/reftable: extract code from the transaction preparation
  refs/files: remove duplicate duplicates check
  refs: move duplicate refname update check to generic layer
  refs/files: remove redundant check in split_symref_update()
2025-04-16 13:54:19 -07:00
Junio C Hamano
01a6e244f9 Merge branch 'ps/maintenance-reflog-expire'
"git maintenance" learns a new task to expire reflog entries.

* ps/maintenance-reflog-expire:
  builtin/maintenance: introduce "reflog-expire" task
  builtin/gc: split out function to expire reflog entries
  builtin/reflog: make functions regarding `reflog_expire_options` public
  builtin/reflog: stop storing per-reflog expiry dates globally
  builtin/reflog: stop storing default reflog expiry dates globally
  reflog: rename `cmd_reflog_expire_cb` to `reflog_expire_options`
2025-04-16 13:54:19 -07:00
Junio C Hamano
1a1661bd41 Merge branch 'jt/rev-list-z'
"git rev-list" learns machine-parsable output format that delimits
each field with NUL.

* jt/rev-list-z:
  rev-list: support NUL-delimited --missing option
  rev-list: support NUL-delimited --boundary option
  rev-list: support delimiting objects with NUL bytes
  rev-list: refactor early option parsing
  rev-list: inline `show_object_with_name()` in `show_object()`
2025-04-16 13:54:18 -07:00
Junio C Hamano
7cfdb0abc6 Merge branch 'ps/misc-build-fixes'
Random build fixes.

* ps/misc-build-fixes:
  ci: use Visual Studio for win+meson job on GitHub Workflows
  meson: distinguish build and target host binaries
  meson: respect 'tests' build option in contrib
  gitweb: fix generation of "gitweb.js"
  meson: fix handling of '-Dcurl=auto'
2025-04-16 13:54:18 -07:00
Derrick Stolee
1b2eee94f1 docs: document core.hooksPath=/dev/null
If a user wishes to disable hooks, then they can do so using the
established pattern of setting 'core.hooksPath' to /dev/null. This is
already tested in t1350-config-hooks-path.sh, but has not previously
been visible in the documentation.

Update the documentation to include this as an option.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-16 09:04:37 -07:00
Patrick Steinhardt
a7fa5b2f0c Documentation: stop depending on Perl to generate command list
The "cmd-list.perl" script is used to extract the list of commands part
of a specific category and extracts the description of each command from
its respective manpage. The generated output is then included in git(1)
to list all Git commands.

The script is written in Perl. Refactor it to use shell scripting
exclusively so that we can get rid of the mandatory dependency on Perl
to build our documentation.

The converted script is slower compared to its Perl implementation. But
by being careful and not spawning external commands in `format_one ()`
we can mitigate the performance hit to a reasonable level:

    Benchmark 1: Perl
      Time (mean ± σ):      10.3 ms ±   0.2 ms    [User: 7.0 ms, System: 3.3 ms]
      Range (min … max):    10.0 ms …  11.1 ms    200 runs

    Benchmark 2: Shell
      Time (mean ± σ):      74.4 ms ±   0.4 ms    [User: 48.6 ms, System: 24.7 ms]
      Range (min … max):    73.1 ms …  75.5 ms    200 runs

    Summary
      Perl ran
        7.23 ± 0.13 times faster than Shell

While a sevenfold slowdown is significant, the benefit of not requiring
Perl for a fully-functioning Git installation outweighs waiting a couple
of milliseconds longer during the build process.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-04-16 07:30:30 -07:00