Commit Graph

16218 Commits

Author SHA1 Message Date
Junio C Hamano
f93ff170b9 Git 2.48.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-13 12:57:19 -08:00
Junio C Hamano
65faad6d84 Sync with Git 2.47.2
Git 2.47.2

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# gpg: Good signature from "Junio C Hamano <gitster@pobox.com>" [ultimate]
# gpg:                 aka "Junio C Hamano <junio@pobox.com>" [ultimate]
# gpg:                 aka "Junio C Hamano <jch@google.com>" [ultimate]

* tag 'v2.47.2':
  Git 2.47.2
  Git 2.46.3
  Git 2.45.3
  Git 2.44.3
  Git 2.43.6
  Git 2.42.4
  Git 2.41.3
  Git 2.40.4
  credential: disallow Carriage Returns in the protocol by default
  credential: sanitize the user prompt
  credential_format(): also encode <host>[:<port>]
  t7300: work around platform-specific behaviour with long paths on MinGW
  compat/regex: fix argument order to calloc(3)
  mingw: drop bogus (and unneeded) declaration of `_pgmptr`
  ci: remove 'Upload failed tests' directories' step from linux32 jobs
2025-01-13 12:55:26 -08:00
Scott Chacon
4e3dd47c9d help: interpret boolean string values for help.autocorrect
A help.autocorrect value of 1 is currently interpreted as "wait 1
decisecond", which can be confusing to users who believe they are setting a
boolean value to turn the autocorrect feature on.

Interpret the value of help.autocorrect as either one of the accepted list
of special values ("never", "immediate", ...), a boolean or an integer. If
the value is 1, it is no longer interpreted as a decisecond value of 0.1s
but as a true boolean, the equivalent of "immediate". If the value is 2 or
more, continue treating it as a decisecond wait time.

False boolean string values ("off", "false", "no") are now equivalent to
"never", meaning that guessed values are still shown but nothing is
executed. True boolean string values are interpreted as "immediate".

Signed-off-by: Scott Chacon <schacon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-13 08:20:01 -08:00
Jean-Noël Avila
69666e6746 doc: convert git-restore to new style format
- Switch the synopsis to a 'synopsis' block which will
  automatically format placeholders in italics and keywords in
  monospace

- Use _<placeholder>_ instead of <placeholder> in the description

- Use backticks for keywords and more complex option
descriptions. The new rendering engine will apply synopsis rules to
these spans.

While at it, also convert an option description to imperative mood.

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-10 15:21:21 -08:00
Jean-Noël Avila
77b2d29e91 doc: convert git-notes to new documentation format
- Switch the synopsis to a synopsis block which will automatically
  format placeholders in italics and keywords in monospace
- Use _<placeholder>_ instead of <placeholder> in the description
- Use `backticks` for keywords and more complex option
descriptions. The new rendering engine will apply synopsis rules to
these spans.

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-10 15:19:52 -08:00
M Hickford
a90ff409f0 docs: discuss caching personal access tokens
Describe problems storing personal access tokens in git-credential-cache
and suggest alternatives.

Research suggests that many users are confused about this:

> the point of passwords is that (ideally) you memorise them [so]
> they're never stored anywhere in plain text. Yet GitHub's personal
> access token system seems to basically force you to store the token in
> plain text?

https://stackoverflow.com/questions/46645843/where-to-store-my-git-personal-access-token#comment89963004_46645843
Signed-off-by: M Hickford <mirth.hickford@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-10 15:10:00 -08:00
M Hickford
cf5b8276dc docs: list popular credential helpers
git-credential-store saves credentials unencrypted on disk. It is the
least secure choice of credential helper. Nevertheless, it appears
several times more popular than any other credential helper [1].

Inform users about more secure alternatives.

[1] https://stackoverflow.com/questions/35942754/how-can-i-save-username-and-password-in-git

Signed-off-by: M Hickford <mirth.hickford@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-10 15:10:00 -08:00
Adam Johnson
21e1b44865 difftool docs: restore correct position of tool list
2a9dfdf260 (difftool docs: de-duplicate configuration sections, 2022-09-07)
moved the difftool documentation, but missed moving this "include" line that
includes the generated list of diff tools, as referenced in the moved text.

Restore the correct position of the included list.

Signed-off-by: Adam Johnson <me@adamj.eu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-09 08:46:53 -08:00
Matthew Hughes
6a63995335 docs: fix typesetting of merge driver placeholders
Following the `CodingGuidlines`, since these placeholders are literal
they should be typeset verbatim, so fix some that aren't.

Signed-off-by: Matthew Hughes <matthewhughes934@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-07 15:11:36 -08:00
Kristoffer Haugsbakk
14650065b7 RelNotes/2.48.0: fix typos etc.
Correct verb tense, add missing words, avoid double blank lines,
and rephrase things that don’t read well to me like “Turn this linkage
to relative paths”.

Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-07 10:46:18 -08:00
Junio C Hamano
ee0e3bbc8d Merge branch 'jc/doc-opt-tilde-expand'
Docfix.

* jc/doc-opt-tilde-expand:
  gitcli.txt: typeset pathnames as monospace
2025-01-06 08:23:29 -08:00
Junio C Hamano
1fa37a0608 Merge branch 'mh/doc-windows-home-env'
Docfix.

* mh/doc-windows-home-env:
  git.txt: fix heading line of tildes
2025-01-06 08:23:29 -08:00
Martin Ågren
b67a603f63 gitcli.txt: typeset pathnames as monospace
Commit 1bc1e94091 (doc: option value may be separate for valid reasons,
2024-11-25) added a paragraph discussing tilde-expansion of, e.g.,
~/directory/file.

The tilde character has a special meaning to asciidoc tools. In this
particular case, AsciiDoc matches up the two tildes in "e.g.
~/directory/file or ~u/d/f" and sets the text between them using
subscript. In the manpage, where subscripting is not possible, this
renders as "e.g.  /directory/file oru/d/f".

These paths are literal values, which our coding guidelines want typeset
as verbatim using backticks. Do that. One effect of this is indeed that
the asciidoc tools stop interpreting tilde and other special characters.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-03 08:23:59 -08:00
Martin Ågren
38d7016891 git.txt: fix heading line of tildes
The two-line heading added in 8525e92886 (Document HOME environment
variable, 2024-12-09) uses too many tilde characters, so the heading
isn't detected as such. Both AsciiDoc and Asciidoctor end up
misrendering this in different ways.

Use the correct number of tilde characters to fix this.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-03 08:23:10 -08:00
Junio C Hamano
1b4e9a5f8b Merge branch 'ps/build-meson-html'
The build procedure based on meson learned to generate HTML
documention pages.

* ps/build-meson-html:
  Documentation: wire up sanity checks for Meson
  t/Makefile: make "check-meson" work with Dash
  meson: install static files for HTML documentation
  meson: generate articles
  Documentation: refactor "howto-index.sh" for out-of-tree builds
  Documentation: refactor "api-index.sh" for out-of-tree builds
  meson: generate user manual
  Documentation: inline user-manual.conf
  meson: generate HTML pages for all man page categories
  meson: fix generation of merge tools
  meson: properly wire up dependencies for our docs
  meson: wire up support for AsciiDoctor
2025-01-02 13:37:08 -08:00
Junio C Hamano
d062ccf4c3 A bit more post Git 2.48-rc1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-01 09:21:15 -08:00
Junio C Hamano
bc2c65770d Git 2.48-rc1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-30 06:58:28 -08:00
Junio C Hamano
df2faf1a65 Merge branch 'as/gitk-git-gui-repo-update'
The developer documentation has been updated to give the latest
info on gitk and git-gui maintainer.

* as/gitk-git-gui-repo-update:
  Update the official repo of gitk
2024-12-28 10:11:42 -08:00
Patrick Steinhardt
5419445b4d Documentation: wire up sanity checks for Meson
Wire up sanity checks for Meson to verify that no man pages are missing.
This check is similar to the same check we already have for our tests.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:12 -08:00
Patrick Steinhardt
7a3136e5c7 meson: install static files for HTML documentation
Now that we generate man pages, articles and user manual with Meson the
only thing that is still missing in an installation of HTML documents is
a couple of static files. Wire these up to finalize Meson's support for
generating HTML documentation.

Diffing an installation that uses our Makefile with an installation that
uses Meson only surfaces a couple of discepancies now:

  - Meson doesn't install "everyday.html" and "git-remote-helpers.html".
    These files are marked as obsolete and don't contain any useful
    information anymore: they simply point to their modern equivalents.

  - Meson doesn't install "*.txt" files when asking for HTML docs. I'm
    not sure why our Makefiles do this in the first place, and it does
    seem like the resulting installation is fully functional even
    without those files.

Other than that, both layout and file contents are the exact same.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:11 -08:00
Patrick Steinhardt
bcf7edee09 meson: generate articles
While the Meson build system already knows to generate man pages and our
user manual, it does not yet generate the random assortment of articles
that we have. Plug this gap.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:11 -08:00
Patrick Steinhardt
8922506cb2 Documentation: refactor "howto-index.sh" for out-of-tree builds
The "howto-index.sh" is used to generate an index of our how-to docs. It
receives as input the paths to these documents, which would typically be
relative to the "Documentation/" directory in Makefile-based builds. In
an out-of-tree build though it will get relative that may be rooted
somewhere else entirely.

The file paths do end up in the generated index, and the expectation is
that they should always start with "howto/". But for out-of-tree builds
we would populate it with the paths relative to the build directory,
which is wrong.

Fix the issue by using `$(basename "$file")` to generate the path. While
at it, move the script into "howto/" to align it with the location of
the comparable "api-index.sh" script.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:11 -08:00
Patrick Steinhardt
88e08b92e9 Documentation: refactor "api-index.sh" for out-of-tree builds
The "api-index.sh" script generates an index of API-related
documentation. The script does not handle out-of-tree builds and thus
cannot be used easily by Meson.

Refactor it to be independent of locations by both accepting a source
directory where the API docs live as well as a path to an output file.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:10 -08:00
Patrick Steinhardt
ae0b33939d meson: generate user manual
Our documentation contains a user manual that gives people a short
introduction to Git. Our Makefile knows to generate the manual into
three different formats: an HTML page, a PDF and an info page. The Meson
build instructions don't yet generate any of these.

While wiring up all these formats I hit a couple of road blocks with how
we generate our info pages. Even though I eventually resolved these, it
made me question whether anybody actually uses info pages in the first
place. Checking through a couple of downstream consumers I couldn't find
a single user of either the info pages nor of our PDF manual in Arch
Linux, Debian, Fedora, Ubuntu, FreeBSD or OpenBSDFedora. So it's rather
safe to assume that there aren't really any users out there, and thus
the added complexity does not seem worth it.

Wire up support for building the user manual in HTML format and
conciously skip over the other two formats. This is basically a form of
silent deprecation: if people out there use the other two formats they
will eventually complain about them missing in Meson, which means we can
wire them up at a later point. If they don't we can phase out these
formats eventually.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:10 -08:00
Patrick Steinhardt
851ecc4290 Documentation: inline user-manual.conf
When generating our user manual we set up a bit of extra configuration
compared to our normal configuration. This is done by having an extra
"user-manual.conf" file that Asciidoc seems to pull in automatically due
to matching filenames with "user-manual.txt". This dependency is quite
hidden though and thus easy to miss. Furthermore, it seems that Asciidoc
does not know to pull it in for out-of-tree builds where we use relative
paths.

The setup in AsciiDoctor is somewhat different: instead of having two
sets of configuration, we condition the use of manual-specific configs
based on whether the document type is "book". And as we only build our
user manual with that type this is sufficient.

Use the same trick for our user manual by inlining the configuration
into "asciidoc.conf.in" and making it conditional on whether or not
"doctype-book" is defined.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:10 -08:00
Patrick Steinhardt
0696ebe9ce meson: generate HTML pages for all man page categories
When generating HTML pages for our man pages we only generate them for
category 1 in Meson, which are the pages corresponding to our built-in
commands. I cannot tell why I added this filter though: our Makefile
installs all man pages, so a Meson-based build misses out on many of
them.

Fix this by removing the filter.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:10 -08:00
Patrick Steinhardt
b88540045c meson: fix generation of merge tools
Our buildsystems generate a list of diff and merge tools that ultimately
end up in our documentation. And while Meson does wire up the logic, it
tries to use the TOOL_MODE environment variable to set up the mode. This
is wrong though: the mode is set via an argument that we have fixed to
'diff' mode by accident.

Fix this such that merge tools are properly generated.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:09 -08:00
Patrick Steinhardt
2a8bd34c55 meson: properly wire up dependencies for our docs
A couple of Meson documentation targets use `meson.current_source_dir()`
to resolve inputs. This has the downside that it does not automagically
make Meson track these inputs as a dependency. After all, string
arguments really can be anything, even if they happen to match an actual
filesystem path.

Adapt these build targets to instead use inputs.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:09 -08:00
Patrick Steinhardt
d838d821c9 meson: wire up support for AsciiDoctor
While our Makefile supports both Asciidoc and AsciiDoctor, our Meson
build instructions only support the former. Wire up support for the
latter, as well.

Our Makefile always favors Asciidoc, but Meson will automatically figure
out which of both to use based on whether they are installed or not. To
keep compatibility with our Makefile it favors Asciidoc over Asciidoctor
in case both are available.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-27 08:28:09 -08:00
Alexander Shopov
b59358100c Update the official repo of gitk
Point out:
- current maintaner
- contribution flow is via the mailing list

Signed-off-by: Alexander Shopov <ash@kambanaria.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-26 08:06:42 -08:00
Junio C Hamano
996f0c583b Hopefully the final batch before 2.48-rc1
Let's wait for git-gui, gitk, and possibly po/ and delay the tagging
of the -rc1.  Many people are already offline for the end-of-year
holidays and it is a slow week, and 'master' front has too many new
things graduated from 'next' a bit too early for me to feel
comfortable.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-23 10:13:58 -08:00
Junio C Hamano
6f8ae955bd Merge branch 'kn/reflog-migration'
"git refs migrate" learned to also migrate the reflog data across
backends.

* kn/reflog-migration:
  refs: mark invalid refname message for translation
  refs: add support for migrating reflogs
  refs: allow multiple reflog entries for the same refname
  refs: introduce the `ref_transaction_update_reflog` function
  refs: add `committer_info` to `ref_transaction_add_update()`
  refs: extract out refname verification in transactions
  refs/files: add count field to ref_lock
  refs: add `index` field to `struct ref_udpate`
  refs: include committer info in `ref_update` struct
2024-12-23 09:32:29 -08:00
Junio C Hamano
f74eae3e47 Merge branch 'ma/asciidoctor-build-fixes'
A topic to optionally build with meson, which has graduated to
'master' recently, broke Documentation pipeline with asciidoctor
for the normal Makefile build as well as meson-based one, which
have been corrected.

* ma/asciidoctor-build-fixes:
  asciidoctor-extensions.rb.in: inject GIT_DATE
  asciidoctor-extensions.rb.in: add missing word
  asciidoctor-extensions.rb.in: delete existing <refmiscinfo/>
2024-12-23 09:32:27 -08:00
Junio C Hamano
f074cdea46 Merge branch 'ps/build-hotfix'
A topic to optionally build with meson, which has graduated to
'master' recently, has regressed the normal Makefile build, which
is being corrected.

* ps/build-hotfix:
  meson: add options to override build information
  GIT-VERSION-GEN: fix overriding GIT_BUILT_FROM_COMMIT and GIT_DATE
  GIT-VERSION-GEN: fix overriding GIT_VERSION
  Makefile: introduce template for GIT-VERSION-GEN
  Makefile: drop unneeded indirection for GIT-VERSION-GEN outputs
  Makefile: stop including "GIT-VERSION-FILE" in docs
2024-12-23 09:32:26 -08:00
Junio C Hamano
e9a4054320 Merge branch 'kl/doc-build-fix'
Build fix.

* kl/doc-build-fix:
  doc: remove extra quotes in generated docs
2024-12-23 09:32:23 -08:00
Junio C Hamano
88e59f8027 Merge branch 'js/range-diff-diff-merges'
"git range-diff" learned to optionally show and compare merge
commits in the ranges being compared, with the --diff-merges
option.

* js/range-diff-diff-merges:
  range-diff: introduce the convenience option `--remerge-diff`
  range-diff: optionally include merge commits' diffs in the analysis
2024-12-23 09:32:17 -08:00
Martin Ågren
beb8081f31 asciidoctor-extensions.rb.in: inject GIT_DATE
After a38edab7c8 (Makefile: generate doc versions via GIT-VERSION-GEN,
2024-12-06), we no longer inject GIT_DATE when building with
Asciidoctor.

Replace the <date/> tag in the XML to inject the value of GIT_DATE.
Unlike <refmiscinfo/> as handled in a recent commit, we have no reason
to expect that this tag might be missing, so there's no need for "maybe
remove, then add" and we can just outright replace the one that
Asciidoctor has generated based on the mtime of the source file.

Compared to pre-a38edab7c8, we now end up injecting this also in the
build of Git.3pm, which until now has been using the mtime of Git.pm.
That is arguably even a good change since it results in more
reproducible builds.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 17:34:35 -08:00
Martin Ågren
c683924d06 asciidoctor-extensions.rb.in: add missing word
Commit a38edab7c8 (Makefile: generate doc versions via GIT-VERSION-GEN,
2024-12-06) stopped providing an attribute value "Git $(GIT_VERSION)" to
asciidoc/Asciidoctor over the command line. Instead, we now provide the
attribute to asciidoc through a generated asciidoc.conf, where the value
is generated as "Git @GIT_VERSION@".

In the similar mechanism for Asciidoctor, we forgot the "Git" prefix.
Restore it.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 17:34:35 -08:00
Martin Ågren
298805c823 asciidoctor-extensions.rb.in: delete existing <refmiscinfo/>
After the recent a38edab7c8 (Makefile: generate doc versions via
GIT-VERSION-GEN, 2024-12-06), building with Asciidoctor results in
manpages where the headers no longer contain "Git Manual" and the
footers no longer identify the built Git version.

Before a38edab7c8, we used to just provide a few attributes to
Asciidoctor (and asciidoc). Commit 7a30134358 (asciidoctor-extensions:
provide `<refmiscinfo/>`, 2019-09-16) noted that older versions of
Asciidoctor didn't propagate those attributes into the built XML files,
so we started injecting them ourselves from this script. With newer
versions of Asciidoctor, we'd end up with some harmless duplication
among the tags in the final XML.

Post-a38edab7c8, we don't provide these attributes and Asciidoctor
inserts empty-ish values. After our additions from 7a30134358, we get

  <refmiscinfo class="source">&#160;</refmiscinfo>
  <refmiscinfo class="manual">&#160;</refmiscinfo>
  <refmiscinfo class="source">2.47.1.[...]</refmiscinfo>
  <refmiscinfo class="manual">Git Manual</refmiscinfo>

When these are handled, it appears to be first come first served,
meaning that our additions have no effect and we regress as described in
the first paragraph.

Remove existing "source" or "manual" <refmiscinfo/> tags before adding
ours. I considered removing all <refmiscinfo/> to get a nice clean
slate, instead of just those two that we want to replace to be a bit
more precise. I opted for the latter. Maybe one day, Asciidoctor learns
to insert something useful there which `xmlto` can pick up and make good
use of -- let's not interfere.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 17:34:35 -08:00
Junio C Hamano
f5f82c0d5f Merge branch 'ps/build-hotfix' into ma/asciidoctor-build-fixes
* ps/build-hotfix:
  meson: add options to override build information
  GIT-VERSION-GEN: fix overriding GIT_BUILT_FROM_COMMIT and GIT_DATE
  GIT-VERSION-GEN: fix overriding GIT_VERSION
  Makefile: introduce template for GIT-VERSION-GEN
  Makefile: drop unneeded indirection for GIT-VERSION-GEN outputs
  Makefile: stop including "GIT-VERSION-FILE" in docs
2024-12-20 17:34:25 -08:00
Junio C Hamano
49edce4ff9 show-index: the short help should say the command reads from its input
The short help text given by "git show-index -h" says

    $ git show-index -h
    usage: git show-index [--object-format=<hash-algorithm>]

        --[no-]object-format <hash-algorithm>
                              specify the hash algorithm to use

The command takes a pack .idx file from its standard input.  The
user has to _know_ this, as there is no indication from this output.

Give a hint that the data to work on is fed from its standard input.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 17:30:57 -08:00
Patrick Steinhardt
1bc815c3d0 meson: add options to override build information
We inject various different kinds of build information into build
artifacts, like the version string or the commit from which Git was
built. Add options to let users explicitly override this information
with Meson.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 12:36:46 -08:00
Patrick Steinhardt
992bc5618f GIT-VERSION-GEN: fix overriding GIT_VERSION
GIT-VERSION-GEN tries to derive the version that Git is being built from
via multiple different sources in the following order:

  1. A file called "version" in the source tree's root directory, if it
     exists.

  2. The current commit in case Git is built from a Git repository.

  3. Otherwise, we use a fallback version stored in a variable which is
     bumped whenever a new Git version is getting tagged.

It used to be possible to override the version by overriding the
`GIT_VERSION` Makefile variable (e.g. `make GIT_VERSION=foo`). This
worked somewhat by chance, only: `GIT-VERSION-GEN` would write the
actual Git version into `GIT-VERSION-FILE`, not the overridden value,
but when including the file into our Makefile we would not override the
`GIT_VERSION` variable because it has already been set by the user. And
because our Makefile used the variable to propagate the version to our
build tools instead of using `GIT-VERSION-FILE` the resulting build
artifacts used the overridden version.

But that subtle mechanism broke with 4838deab65 (Makefile: refactor
GIT-VERSION-GEN to be reusable, 2024-12-06) and subsequent commits
because the version information is not propagated via the Makefile
variable anymore, but instead via the files that `GIT-VERSION-GEN`
started to write. And as the script never knew about the `GIT_VERSION`
environment variable in the first place it uses one of the values listed
above instead of the overridden value.

Fix this issue by making `GIT-VERSION-GEN` handle the case where
`GIT_VERSION` has been set via the environment.

Note that this requires us to introduce a new GIT_VERSION_OVERRIDE
variable that stores a potential user-provided value, either via the
environment or via "config.mak". Ideally we wouldn't need it and could
just continue to use GIT_VERSION for this. But unfortunately, Makefiles
will first include all sub-Makefiles before figuring out whether it
needs to re-make any of them [1]. Consequently, if there already is a
GIT-VERSION-FILE, we would have slurped in its value of GIT_VERSION
before we call GIT-VERSION-GEN, and because GIT-VERSION-GEN now uses
that value as an override it would mean that the first generated value
for GIT_VERSION will remain unchanged.

Furthermore we have to move the include for "GIT-VERSION-FILE" after the
includes for "config.mak" and related so that GIT_VERSION_OVERRIDE can
be set to the value provided by "config.mak".

[1]: https://www.gnu.org/software/make/manual/html_node/Remaking-Makefiles.html

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 12:36:45 -08:00
Patrick Steinhardt
114494ae2c Makefile: introduce template for GIT-VERSION-GEN
Introduce a new template to call GIT-VERSION-GEN. This will allow us to
iterate on how exactly the script is called in subsequent commits
without having to adapt all call sites every time.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 12:36:45 -08:00
Patrick Steinhardt
b329f2eb00 Makefile: drop unneeded indirection for GIT-VERSION-GEN outputs
Some of the callsites of GIT-VERSION-GEN generate the target file with a
"+" suffix first and then move the file into place when the new contents
are different compared to the old contents. This allows us to avoid a
needless rebuild by not updating timestamps of the target file when its
contents will remain unchanged anyway.

In fact though, this exact logic is already handled in GIT-VERSION-GEN,
so doing this manually is pointless. This is a leftover from an earlier
version of 4838deab65 (Makefile: refactor GIT-VERSION-GEN to be
reusable, 2024-12-06), where the script didn't handle that logic for us.

Drop the needless indirection.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 12:36:44 -08:00
Patrick Steinhardt
1b0882cba2 Makefile: stop including "GIT-VERSION-FILE" in docs
We include "GIT-VERSION-FILE" in our docs Makefile, but don't actually
use the "GIT_VERSION" variable that it provides. This is a leftover from
the conversion to make "GIT-VERSION-GEN" generate version information
in-place by substituting placeholders in 4838deab65 (Makefile: refactor
GIT-VERSION-GEN to be reusable, 2024-12-06) and subsequent commits,
where all usages of the variable were removed.

Stop including the file.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 12:36:44 -08:00
Derrick Stolee
6333e7ae0b path-walk: mark trees and blobs as UNINTERESTING
When the input rev_info has UNINTERESTING starting points, we want to be
sure that the UNINTERESTING flag is passed appropriately through the
objects. To match how this is done in places such as 'git pack-objects', we
use the mark_edges_uninteresting() method.

This method has an option for using the "sparse" walk, which is similar in
spirit to the path-walk API's walk. To be sure to keep it independent, add a
new 'prune_all_uninteresting' option to the path_walk_info struct.

To check how the UNINTERSTING flag is spread through our objects, extend the
'test-tool path-walk' command to output whether or not an object has that
flag. This changes our tests significantly, including the removal of some
objects that were previously visited due to the incomplete implementation.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 08:37:05 -08:00
Derrick Stolee
9145660979 path-walk: visit tags and cached objects
The rev_info that is specified for a path-walk traversal may specify
visiting tag refs (both lightweight and annotated) and also may specify
indexed objects (blobs and trees). Update the path-walk API to walk
these objects as well.

When walking tags, we need to peel the annotated objects until reaching
a non-tag object. If we reach a commit, then we can add it to the
pending objects to make sure we visit in the commit walk portion. If we
reach a tree, then we will assume that it is a root tree. If we reach a
blob, then we have no good path name and so add it to a new list of
"tagged blobs".

When the rev_info includes the "--indexed-objects" flag, then the
pending set includes blobs and trees found in the cache entries and
cache-tree. The cache entries are usually blobs, though they could be
trees in the case of a sparse index. The cache-tree stores
previously-hashed tree objects but these are cleared out when staging
objects below those paths. We add tests that demonstrate this.

The indexed objects come with a non-NULL 'path' value in the pending
item. This allows us to prepopulate the 'path_to_lists' strmap with
lists for these paths.

The tricky thing about this walk is that we will want to combine the
indexed objects walk with the commit walk, especially in the future case
of walking objects during a command like 'git repack'.

Whenever possible, we want the objects from the index to be grouped with
similar objects in history. We don't want to miss any paths that appear
only in the index and not in the commit history.

Thus, we need to be careful to let the path stack be populated initially
with only the root tree path (and possibly tags and tagged blobs) and go
through the normal depth-first search. Afterwards, if there are other
paths that are remaining in the paths_to_lists strmap, we should then
iterate through the stack and visit those objects recursively.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 08:37:05 -08:00
Derrick Stolee
c8dba310d7 path-walk: allow consumer to specify object types
We add the ability to filter the object types in the path-walk API so
the callback function is called fewer times.

This adds the ability to ask for the commits in a list, as well. We
re-use the empty string for this set of objects because these are passed
directly to the callback function instead of being part of the
'path_stack'.

Future changes will add the ability to visit annotated tags.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 08:37:05 -08:00
Derrick Stolee
d190124f27 t6601: add helper for testing path-walk API
Add some tests based on the current behavior, doing interesting checks
for different sets of branches, ranges, and the --boundary option. This
sets a baseline for the behavior and we can extend it as new options are
introduced.

Store and output a 'batch_nr' value so we can demonstrate that the paths are
grouped together in a batch and not following some other ordering. This
allows us to test the depth-first behavior of the path-walk API. However, we
purposefully do not test the order of the objects in the batch, so the
output is compared to the expected output through a sort.

It is important to mention that the behavior of the API will change soon as
we start to handle UNINTERESTING objects differently, but these tests will
demonstrate the change in behavior.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-12-20 08:37:04 -08:00