Commit Graph

12304 Commits

Author SHA1 Message Date
Junio C Hamano
3c90710c0c Merge branch 'hw/config-doc-in-header'
Follow recent push to move API docs from Documentation/ to header
files and update config.h

* hw/config-doc-in-header:
  config: move documentation to config.h
2019-12-01 09:04:32 -08:00
Junio C Hamano
d4924ea7c3 Merge branch 'dl/doc-diff-no-index-implies-exit-code'
Doc update.

* dl/doc-diff-no-index-implies-exit-code:
  git-diff.txt: document return code of `--no-index`
2019-12-01 09:04:31 -08:00
Junio C Hamano
ecbddd16bb Merge branch 'pb/help-list-gitsubmodules-among-guides'
Help update.

* pb/help-list-gitsubmodules-among-guides:
  help: add gitsubmodules to the list of guides
2019-12-01 09:04:30 -08:00
Junio C Hamano
fac9ab1419 Merge branch 'ma/bisect-doc-sample-update'
"git merge --no-commit" needs "--no-ff" if you do not want to move
HEAD, which has been corrected in the manual page for "git bisect".

* ma/bisect-doc-sample-update:
  Documentation/git-bisect.txt: add --no-ff to merge command
2019-12-01 09:04:29 -08:00
Jeff King
3eae30e464 doc: replace public-inbox links with lore.kernel.org
Since we're now recommending lore.kernel.org (and because the
public-inbox.org domain might eventually go away), let's update our
internal references to use it, too. That future-proofs our references,
and sets the example we want people to follow.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-30 09:12:26 -08:00
Jeff King
46c67492aa doc: recommend lore.kernel.org over public-inbox.org
Since lore.kernel.org now has the same archive as public-inbox.org and
may have more longevity going forward[1], let's recommend people use it
for finding or referencing messages.

[1] https://public-inbox.org/git/20191120195556.GA25189@dcvr/
      or if you like:
    https://lore.kernel.org/git/20191120195556.GA25189@dcvr/

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-30 09:12:04 -08:00
Philippe Blain
f0e58b3fe8 doc: mention that 'git submodule update' fetches missing commits
'git submodule update' will fetch new commits from the submodule remote
if the SHA-1 recorded in the superproject is not found. This was not
mentioned in the documentation.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-24 15:03:18 +09:00
Manish Goregaokar
8d483c8408 doc: document 'git submodule status --cached'
'git submodule status --cached' reports the SHAs recorded in the
index of the superproject, instead of the SHAs that are checked out
in the submodule.

Signed-off-by: Manish Goregaokar <manishsmail@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-24 13:52:29 +09:00
Johannes Schindelin
ea8b7be147 git svn: stop using rebase --preserve-merges
We deprecated `--preserve-merges` in favor of `--rebase-merges`; Let's
reflect that in `git svn`.

Note: Even when the user asks for `--preserve-merges`, we now silently
pass `--rebase-merges` to `git rebase` instead. Technically, this is a
change of behavior. But practically, `git svn` only ever asks for a
non-interactive rebase, and `--preserve-merges` and `--rebase-merges`
are on par with regard to that.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-23 09:49:23 +09:00
Denton Liu
bd36191886 range-diff: pass through --notes to git log
When a commit being range-diff'd has a note attached to it, the note
will be compared as well. However, if a user has multiple notes refs or
if they want to suppress notes from being printed, there is currently no
way to do this.

Pass through `--[no-]notes[=<ref>]` to the `git log` call so that this
option is customizable.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-21 09:29:52 +09:00
Denton Liu
26d94853f0 pretty-options.txt: --notes accepts a ref instead of treeish
Although `--notes=` accepts and handles a tree-ish just fine, it isn't a
common use-case for users to pass in bare trees. By having "treeish", it
makes it harder to click in users' minds that the argument here is the
same type as the `notes.displayRef` configuration variable, for example.

Change `treeish` to `ref` so that it will be easier for users to make
this connection.

Note that we don't completely lose the notion that `--notes=` can accept
a tree-ish. In git-notes.txt, we have

	It is also permitted for a notes ref to point directly to a tree
	object, in which case the history of the notes can be read with
	`git log -p -g <refname>`.

which means that a hardcore user who wants to take advantage of this
obscure use-case will be able to infer the connection and not be
completely left in the dark.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-21 09:29:52 +09:00
Denton Liu
9d45ac4cbf rev-list-options.txt: remove reference to --show-notes
In ab18b2c0df ("log/pretty-options: Document --[no-]notes and deprecate
old notes options", 2011-03-30), the `--show-notes` option was
deprecated. However, this reference to it still remains. Change it to
reference the replacement option: `--notes`.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-20 13:29:03 +09:00
Alexandr Miloslavskiy
e440fc5888 commit: support the --pathspec-from-file option
Decisions taken for simplicity:
1) For now, `--pathspec-from-file` is declared incompatible with
   `--interactive/--patch`, even when <file> is not `stdin`. Such use
   case it not really expected. Also, it would require changes to
   `interactive_add()`.
2) It is not allowed to pass pathspec in both args and file.

Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-20 13:01:53 +09:00
Alexandr Miloslavskiy
66a25a7242 doc: commit: synchronize <pathspec> description
`git add` shows an example of good writing, follow it.
This also better disambiguates <file>... header.

Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-20 13:01:53 +09:00
Alexandr Miloslavskiy
64bac8df97 reset: support the --pathspec-from-file option
Decisions taken for simplicity:
1) For now, `--pathspec-from-file` is declared incompatible with
   `--patch`, even when <file> is not `stdin`. Such use case it not
   really expected. Also, it is harder to support in `git commit`, so
   I decided to make it incompatible in all places.
2) It is not allowed to pass pathspec in both args and file.

Co-authored-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-20 13:01:53 +09:00
Alexandr Miloslavskiy
d137b50756 doc: reset: synchronize <pathspec> description
`git add` shows an example of good writing, follow it.

Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-20 13:01:53 +09:00
Jeff King
2d92ab32fd rev-parse: make --show-toplevel without a worktree an error
Ever since it was introduced in 7cceca5ccc (Add 'git rev-parse
--show-toplevel' option., 2010-01-12), the --show-toplevel option has
treated a missing working tree as a quiet success: it neither prints a
toplevel path, but nor does it report any kind of error.

While a caller could distinguish this case by looking for an empty
response, the behavior is rather confusing. We're better off complaining
that there is no working tree, as other internal commands would do in
similar cases (e.g., "git status" or any builtin with NEED_WORK_TREE set
would just die()). So let's do the same here.

While we're at it, let's clarify the documentation and add some tests,
both for the new behavior and for the more mundane case (which was not
covered).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-20 10:19:58 +09:00
Johannes Schindelin
f83dff60a7 Start to implement a built-in version of git add --interactive
Unlike previous conversions to C, where we started with a built-in
helper, we start this conversion by adding an interception in the
`run_add_interactive()` function when the new opt-in
`add.interactive.useBuiltin` config knob is turned on (or the
corresponding environment variable `GIT_TEST_ADD_I_USE_BUILTIN`), and
calling the new internal API function `run_add_i()` that is implemented
directly in libgit.a.

At this point, the built-in version of `git add -i` only states that it
cannot do anything yet. In subsequent patches/patch series, the
`run_add_i()` function will gain more and more functionality, until it
is feature complete. The whole arc of the conversion can be found in the
PRs #170-175 at https://github.com/gitgitgadget/git.

The "--helper approach" can unfortunately not be used here: on Windows
we face the very specific problem that a `system()` call in
Perl seems to close `stdin` in the parent process when the spawned
process consumes even one character from `stdin`. Which prevents us from
implementing the main loop in C and still trying to hand off to the Perl
script.

The very real downside of the approach we have to take here is that the
test suite won't pass with `GIT_TEST_ADD_I_USE_BUILTIN=true` until the
conversion is complete (the `--helper` approach would have let it pass,
even at each of the incremental conversion steps).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-14 11:10:04 +09:00
Derrick Stolee
4bd0593e0f test-tool: use 'read-graph' helper
The 'git commit-graph read' subcommand is used in test scripts to check
that the commit-graph contents match the expected data. Mostly, this
helps check the header information and the list of chunks. Users do not
need this information, so move the functionality to a test helper.

Reported-by: Bryan Turner <bturner@atlassian.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-13 11:14:16 +09:00
Naveen Nathan
d3a8caebf3 doc: improve readability of --rebase-merges in git-rebase
When --preserve-merges was deprecated in 427c3bd28a a sentence
was introduced describing the difference between --rebase-merges and
--preserve-merges which is a little unclear and difficult to parse.
This patch improves readability while retaining original meaning.

Signed-off-by: Naveen Nathan <naveen@lastninja.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-12 13:14:19 +09:00
Robin H. Johnson
e0eba649e8 bundle-verify: add --quiet
Add --quiet to git-bundle verify as proposed on the mailing list [1].

Reference: https://www.mail-archive.com/git@vger.kernel.org/msg182844.html <robbat2-20190806T191156-796782357Z@orbis-terrarum.net>
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-11 11:46:29 +09:00
Robin H. Johnson
79862b6b77 bundle-create: progress output control
Support the progress output options from pack-objects in git-bundle's
create subcommand. Most notably, this provides --quiet as requested on
the git mailing list per [1]

Reference: https://www.mail-archive.com/git@vger.kernel.org/msg182844.html <robbat2-20190806T191156-796782357Z@orbis-terrarum.net>
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-11 11:46:28 +09:00
Dominic Jäger
68d40f30c4 merge-strategies: fix typo "reflected to" to "reflected in"
Signed-off-by: Dominic Jäger <dominic.jaeger@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-11 11:04:46 +09:00
Junio C Hamano
d9f6f3b619 The first batch post 2.24 cycle
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-10 18:02:17 +09:00
Junio C Hamano
28014c1084 Merge branch 'bc/hash-independent-tests-part-6'
Test updates to prepare for SHA-2 transition continues.

* bc/hash-independent-tests-part-6:
  t4048: abstract away SHA-1-specific constants
  t4045: make hash-size independent
  t4044: update test to work with SHA-256
  t4039: abstract away SHA-1-specific constants
  t4038: abstract away SHA-1 specific constants
  t4034: abstract away SHA-1-specific constants
  t4027: make hash-size independent
  t4015: abstract away SHA-1-specific constants
  t4011: abstract away SHA-1-specific constants
  t4010: abstract away SHA-1-specific constants
  t3429: remove SHA1 annotation
  t1305: avoid comparing extensions
  rev-parse: add a --show-object-format option
  t/oid-info: add empty tree and empty blob values
  t/oid-info: allow looking up hash algorithm name
2019-11-10 18:02:17 +09:00
Junio C Hamano
57b530125e Merge branch 'js/update-index-ignore-removal-for-skip-worktree'
"git stash save" in a working tree that is sparsely checked out
mistakenly removed paths that are outside the area of interest.

* js/update-index-ignore-removal-for-skip-worktree:
  stash: handle staged changes in skip-worktree files correctly
  update-index: optionally leave skip-worktree entries alone
2019-11-10 18:02:16 +09:00
Junio C Hamano
c22f63c40f Merge branch 'pb/pretty-email-without-domain-part'
The custom format for "git log --format=<format>" learned the l/L
placeholder that is similar to e/E that fills in the e-mail
address, but only the local part on the left side of '@'.

* pb/pretty-email-without-domain-part:
  pretty: add "%aL" etc. to show local-part of email addresses
  t4203: use test-lib.sh definitions
  t6006: use test-lib.sh definitions
2019-11-10 18:02:16 +09:00
Junio C Hamano
5731ca3657 Merge branch 'hw/remove-api-docs-placeholder'
Docfix.

* hw/remove-api-docs-placeholder:
  documentation: remove empty doc files
2019-11-10 18:02:15 +09:00
Junio C Hamano
db806d7064 Merge branch 'sg/dir-trie-fixes'
Code clean-up and a bugfix in the logic used to tell worktree local
and repository global refs apart.

* sg/dir-trie-fixes:
  path.c: don't call the match function without value in trie_find()
  path.c: clarify two field names in 'struct common_dir'
  path.c: mark 'logs/HEAD' in 'common_list' as file
  path.c: clarify trie_find()'s in-code comment
  Documentation: mention more worktree-specific exceptions
2019-11-10 18:02:14 +09:00
Junio C Hamano
f1e2666b33 Merge branch 'jc/am-show-current-patch-docfix'
Doc update.

* jc/am-show-current-patch-docfix:
  doc: am --show-current-patch gives an entire e-mail message
2019-11-10 18:02:14 +09:00
Junio C Hamano
8f1119b988 Merge branch 'wb/midx-progress'
The code to generate multi-pack index learned to show (or not to
show) progress indicators.

* wb/midx-progress:
  multi-pack-index: add [--[no-]progress] option.
  midx: honor the MIDX_PROGRESS flag in midx_repack
  midx: honor the MIDX_PROGRESS flag in verify_midx_file
  midx: add progress to expire_midx_packs
  midx: add progress to write_midx_file
  midx: add MIDX_PROGRESS flag
2019-11-10 18:02:14 +09:00
Junio C Hamano
d4a98e701f Merge branch 'dd/notes-copy-default-dst-to-head'
"git notes copy $original" ought to copy the notes attached to the
original object to HEAD, but a mistaken tightening to command line
parameter validation made earlier disabled that feature by mistake.

* dd/notes-copy-default-dst-to-head:
  notes: fix minimum number of parameters to "copy" subcommand
  t3301: test diagnose messages for too few/many paramters
2019-11-10 18:02:12 +09:00
Junio C Hamano
b75ba9bbd1 Merge branch 'dl/format-patch-cover-from-desc'
The branch description ("git branch --edit-description") has been
used to fill the body of the cover letters by the format-patch
command; this has been enhanced so that the subject can also be
filled.

* dl/format-patch-cover-from-desc:
  format-patch: teach --cover-from-description option
  format-patch: use enum variables
  format-patch: replace erroneous and condition
2019-11-10 18:02:11 +09:00
Junio C Hamano
15d9f3dc66 Merge branch 'es/walken-tutorial'
A tutorial on object enumeration.

* es/walken-tutorial:
  documentation: add tutorial for object walking
2019-11-10 18:02:11 +09:00
Łukasz Niemier
a807200f67 userdiff: add Elixir to supported userdiff languages
Adds support for xfuncref in Elixir[1] language which is Ruby-like
language that runs on Erlang[3] Virtual Machine (BEAM).

[1]: https://elixir-lang.org
[2]: https://www.erlang.org

Signed-off-by: Łukasz Niemier <lukasz@niemier.pl>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-10 15:26:26 +09:00
Pratyush Yadav
461caf3e8a git-shortlog.txt: include commit limiting options
git-shortlog, like git-log, supports options to filter what commits are
used to generate the log. These options come from git-rev-list, and are
documented in Documentation/rev-list-options.txt. Include those options
in shortlog's documentation.

But since rev-list-options.txt contains some other options that don't
really apply in the context of shortlog (like diff formatting, commit
ordering, etc), add a switch in rev-list-options.txt that excludes those
sections from the shortlog documentation. To be more specific, include
only the "Commit Limiting" and "History Simplification" sections.

Signed-off-by: Pratyush Yadav <me@yadavpratyush.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-10 15:13:23 +09:00
Elijah Newren
a6d39f2efb git-filter-branch.txt: correct argument name typo
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-07 14:40:47 +09:00
Elijah Newren
031fd4b93b Documentation: fix a bunch of typos, both old and new
Reported-by: Jens Schleusener <Jens.Schleusener@fossies.org>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-07 13:42:00 +09:00
Johannes Schindelin
c14e6e7903 fetch: add the command-line option --write-commit-graph
This option overrides the config setting `fetch.writeCommitGraph`, if
both are set.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-06 10:59:36 +09:00
Junio C Hamano
1d34d425d4 Merge branch 'bc/doc-use-docbook-5'
Finishing touches to the recent update to the build procedure for
the documentation.

* bc/doc-use-docbook-5:
  manpage-bold-literal.xsl: match for namespaced "d:literal" in template
2019-11-04 13:33:06 +09:00
Emily Shaffer
3c8d754c4b myfirstcontrib: hint to find gitgitgadget allower
GitGitGadget, a handy tool for converting pull requests against Git into
Git-mailing-list-friendly-patch-emails, requires as anti-spam that all
new users be "/allow"ed by an existing user once before it will do
anything for that new user. While this tutorial explained that
mechanism, it did not give much hint on how to go about finding someone
to allow your new pull request. So, teach our new GitGitGadget user
where to look for someone who can add their name to the list.

The advice in this patch is based on the advice proposed for
GitGitGadget: https://github.com/gitgitgadget/gitgitgadget/pull/138

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 15:24:00 +09:00
Emily Shaffer
3ada78de3f myfirstcontrib: add dependency installation step
Indicate that the user needs some dependencies before the build will run
happily on their machine; this dependency list doesn't seem to be made
clear anywhere else in the project documentation. Then, so the user can
be certain any build failures are due to their code and not their
environment, perform a build on a clean checkout of 'master'. Also, move
the note about build parallelization up here, so that it appears next to
the very first build invocation in the tutorial.

Reported-by: Heba Waly <heba.waly@gmail.com>
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 15:23:59 +09:00
Emily Shaffer
4ed5562925 myfirstcontrib: add 'psuh' to command-list.txt
Users can discover commands and their brief usage by running 'git help
git' or 'git help -a'; both of these pages list all available commands
based on the contents of 'command-list.txt'. That means adding a new
command there is an important part of the new command process, and
therefore belongs in the new command tutorial.

Teach new users how to add their command, and include a brief overview
of how to discover which attributes to place on the command in the list.

Since 'git psuh' prints some workspace info, doesn't modify anything,
and is targeted as a user-facing porcelain command, list it as a
'mainporcelain' and 'info' command.

As the usage string is required to generate this documentation, don't
add the command to the list until after the usage string is added to the
tutorial.

Reported-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 15:23:59 +09:00
Johannes Schindelin
8dfb04ae96 update-index: optionally leave skip-worktree entries alone
While `git update-index` mostly ignores paths referring to index entries
whose skip-worktree bit is set, in b4d1690df1 (Teach Git to respect
skip-worktree bit (reading part), 2009-08-20), for reasons that are not
entirely obvious, the `--remove` option was made special: it _does_
remove index entries even if their skip-worktree bit is set.

Seeing as this behavior has been in place for a decade now, it does not
make sense to change it.

However, in preparation for fixing a bug in `git stash` where it
pretends that skip-worktree entries have actually been removed, we need
a mode where `git update-index` leaves all skip-worktree entries alone,
even if the `--remove` option was passed.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 15:22:00 +09:00
Elijah Newren
efd5444238 RelNotes/2.24.0: fix self-contradictory note
As per Wikipedia, "In current technical usage, for one to state that a
feature is deprecated is merely a recommendation against using it."  It
is thus contradictory to claim that something is not "officially
deprecated" and then to immediately state that we are both discouraging
its use and pointing people elsewhere.

Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 15:03:01 +09:00
Martin Ågren
55aca515eb manpage-bold-literal.xsl: match for namespaced "d:literal" in template
We recently regressed our rendering with Asciidoctor of "literal"
elements in our manpages, i.e, stuff we have placed within `backticks`
in order to render as monospace. In particular, we lost the bold
rendering of such literal text.

The culprit is f6461b82b9 ("Documentation: fix build with Asciidoctor 2",
2019-09-15), where we switched from DocBook 4.5 to DocBook 5 with
Asciidoctor. As part of the switch, we started using the namespaced
DocBook XSLT stylesheets rather than the non-namespaced ones. (See
f6461b82b9 for more details on why we changed to the namespaced ones.)

The bold literals are implemented as an XSLT snippet <xsl:template
match="literal">...</xsl:template>. Now that we use namespaces, this
doesn't pick up our literals like it used to.

Match for "d:literal" in addition to just "literal", after defining the
d namespace. ("d" is what
http://docbook.sourceforge.net/release/xsl-ns/current/manpages/docbook.xsl
uses.) Note that we need to keep matching without the namespace for
AsciiDoc.

This boldness was introduced by 5121a6d993 ("Documentation: option to
render literal text as bold for manpages", 2009-03-27) and made the
default in 5945717009 ("Documentation: bold literals in man",
2016-05-31).

One reason this was not caught in review is that our doc-diff tool diffs
without any boldness, i.e., it "only" compares text. As pointed out by
Peff in review of this patch, one can use `MAN_KEEP_FORMATTING=1
./doc-diff <...>`

This has been optically tested with AsciiDoc 8.6.10, Asciidoctor 1.5.5
and Asciidoctor 2.0.10. I've also verified that doc-diff produces the
empty output for all three programs, as expected, and that with the
MAN_KEEP_FORMATTING trick, AsciiDoc yields no diff, whereas with
Asciidoctor, we get bold literals, just like we want.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Acked-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 14:46:42 +09:00
Elijah Newren
849e43680d RelNotes/2.24.0: typofix
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 14:43:51 +09:00
Denton Liu
0115e5d929 git-diff.txt: document return code of --no-index
Within diff_no_index(), we have the following:

	revs->diffopt.flags.exit_with_status = 1;

	...

	/*
	 * The return code for --no-index imitates diff(1):
	 * 0 = no changes, 1 = changes, else error
	 */
	return diff_result_code(&revs->diffopt, 0);

Which means when `git diff` is run in `--no-index` mode, `--exit-code`
is implied. However, the documentation for this is missing in
git-diff.txt.

Add a note about how `--exit-code` is implied in the `--no-index`
documentation to cover this documentation blindspot.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-02 13:16:41 +09:00
Junio C Hamano
f21f8f5d35 Git 2.24-rc2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-30 15:13:14 +09:00
Prarit Bhargava
d8b8217c8a pretty: add "%aL" etc. to show local-part of email addresses
In many projects the number of contributors is low enough that users know
each other and the full email address doesn't need to be displayed.
Displaying only the author's username saves a lot of columns on the screen.

Existing 'e/E' (as in "%ae" and "%aE") placeholders would show the
author's address as "prarit@redhat.com", which would waste columns to show
the same domain-part for all contributors when used in a project internal
to redhat.  Introduce 'l/L' placeholders that strip '@' and domain part from
the e-mail address.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-30 11:49:41 +09:00
Philippe Blain
762d5b4f46 help: add gitsubmodules to the list of guides
The guide "gitsubmodules" was added in d480345 (submodules: overhaul
documentation, 2017-06-22), but it was not added to
command-list.txt when commit 1b81d8c (help: use command-list.txt
for the source of guides, 2018-05-20) taught "git help" to obtain the
guide list from this file.

Add it now, and capitalize the first word of the description of
gitsubmodules, as was done in 1b81d8c (help: use command-list.txt
for the source of guides, 2018-05-20) for the other guides.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-29 12:41:05 +09:00
Mihail Atanassov
8dd327b246 Documentation/git-bisect.txt: add --no-ff to merge command
The hotfix application example uses `git merge --no-commit` to apply
temporary changes to the working tree during a bisect operation. In some
situations this can be a fast-forward and `merge` will apply the hotfix
branch's commits regardless of `--no-commit` (as documented in the `git
merge` manual).

In the pathological case this will make a `git bisect run` invocation
loop indefinitely between the first bisect step and the fast-forwarded
post-merge HEAD.

Add `--no-ff` to the merge command to avoid this issue.

Signed-off-by: Mihail Atanassov <m.atanassov92@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-29 11:53:56 +09:00
brian m. carlson
2eabd38313 rev-parse: add a --show-object-format option
Add an option to print the object format used for input, output, or
storage. This allows shell scripts to discover the hash algorithm in
use.

Since the transition plan allows for multiple input algorithms, document
that we may provide multiple results for input, and the format that the
results may take. While we don't support this now, documenting it early
means that script authors can future-proof their scripts for when we do.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-28 11:34:57 +09:00
Heba Waly
7b4fb434b4 documentation: remove empty doc files
Remove empty and redundant documentation files from the
Documentation/technical/ directory.

The empty doc files included only TODO messages with no documentation for
years. Instead an approach is being taken to keep all doc beside the code
in the relevant header files.
Having empty doc files is confusing and disappointing to anybody looking
for information, besides having the documentation in header files makes it
easier for developers to find the information they are looking for.

Some of the content which could have gone here already exists elsewhere:
- api-object-access.txt -> sha1-file.c and object.h have some details.
- api-quote.txt -> quote.h has some details.
- api-xdiff-interface.txt -> xdiff-interface.h has some details.
- api-grep.txt -> grep.h does not have enough documentation at the moment.

Signed-off-by: Heba Waly <heba.waly@gmail.com>
Reviewed-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-25 11:18:14 +09:00
Heba Waly
6c96630cb0 config: move documentation to config.h
Move the documentation from Documentation/technical/api-config.txt into
config.h as it's easier for the developers to find the usage information
beside the code instead of looking for it in another doc file, also
documentation/technical/api-config.txt is removed because the information
it has is now redundant and it'll be hard to keep it up to date and
syncronized with the documentation in config.h

Signed-off-by: Heba Waly <heba.waly@gmail.com>
Reviewed-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-24 11:14:08 +09:00
Junio C Hamano
d81542e6f3 Eleventh batch
The tenth was at -rc0 ;-)

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-23 14:43:11 +09:00
Junio C Hamano
d45d771978 Merge branch 'bc/smart-http-atomic-push'
The atomic push over smart HTTP transport did not work, which has
been corrected.

* bc/smart-http-atomic-push:
  remote-curl: pass on atomic capability to remote side
2019-10-23 14:43:11 +09:00
SZEDER Gábor
e536b1fedf Documentation: mention more worktree-specific exceptions
If a directory in $GIT_DIR is overridden when $GIT_COMMON_DIR is set,
then usually all paths within that directory are overridden as well.
There are a couple of exceptions, though, and two of them, namely
'refs/rewritten' and 'logs/HEAD' are not mentioned in
'gitrepository-layout'.  Document them as well.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-23 12:53:50 +09:00
William Baker
680cba2c2b multi-pack-index: add [--[no-]progress] option.
Add the --[no-]progress option to git multi-pack-index.
Pass the MIDX_PROGRESS flag to the subcommand functions
when progress should be displayed by multi-pack-index.
The progress feature was added to 'verify' in 144d703
("multi-pack-index: report progress during 'verify'", 2018-09-13)
but some subcommands were not updated to display progress, and
the ability to opt-out was overlooked.

Signed-off-by: William Baker <William.Baker@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-23 12:05:06 +09:00
Junio C Hamano
80736d7c5e doc: am --show-current-patch gives an entire e-mail message
The existing wording gives an impression that it only gives the
contents of the $GIT_DIR/rebase-apply/patch file, i.e. the patch
proper, but the option actually emits the entire e-mail message
being processed (iow, one of the output files from "git mailsplit").

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-23 11:26:37 +09:00
Junio C Hamano
d966095db0 Git 2.24-rc0
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-18 11:40:50 +09:00
Junio C Hamano
f1afbb063f Merge branch 'bw/format-patch-o-create-leading-dirs'
"git format-patch -o <outdir>" did an equivalent of "mkdir <outdir>"
not "mkdir -p <outdir>", which is being corrected.

* bw/format-patch-o-create-leading-dirs:
  format-patch: create leading components of output directory
2019-10-18 11:40:48 +09:00
Junio C Hamano
376012c919 Merge branch 'js/doc-stash-save'
Doc clarification.

* js/doc-stash-save:
  doc(stash): clarify the description of `save`
2019-10-18 11:40:47 +09:00
Doan Tran Cong Danh
d58deb9c4e notes: fix minimum number of parameters to "copy" subcommand
The builtin/notes.c::copy() function is prepared to handle either
one or two arguments given from the command line; when one argument
is given, to-obj defaults to HEAD.

bbb1b8a3 ("notes: check number of parameters to "git notes copy"",
2010-06-28) tried to make sure "git notes copy" (with *no* other
argument) does not dereference NULL by checking the number of
parameters, but it incorrectly insisted that we need two arguments,
instead of either one or two.  This disabled the defaulting to-obj
to HEAD.

Correct it.

Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-18 09:43:10 +09:00
brian m. carlson
6f1194246a remote-curl: pass on atomic capability to remote side
When pushing more than one reference with the --atomic option, the
server is supposed to perform a single atomic transaction to update the
references, leaving them either all to succeed or all to fail.  This
works fine when pushing locally or over SSH, but when pushing over HTTP,
we fail to pass the atomic capability to the remote side.  In fact, we
have not reported this capability to any remote helpers during the life
of the feature.

Now normally, things happen to work nevertheless, since we actually
check for most types of failures, such as non-fast-forward updates, on
the client side, and just abort the entire attempt.  However, if the
server side reports a problem, such as the inability to lock a ref, the
transaction isn't atomic, because we haven't passed the appropriate
capability over and the remote side has no way of knowing that we wanted
atomic behavior.

Fix this by passing the option from the transport code through to remote
helpers, and from the HTTP remote helper down to send-pack.  With this
change, we can detect if the server side rejects the push and report
back appropriately.  Note the difference in the messages: the remote
side reports "atomic transaction failed", while our own checking rejects
pushes with the message "atomic push failed".

Document the atomic option in the remote helper documentation, so other
implementers can implement it if they like.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-17 16:08:22 +09:00
Denton Liu
bf8e65b30b format-patch: teach --cover-from-description option
Before, when format-patch generated a cover letter, only the body would
be populated with a branch's description while the subject would be
populated with placeholder text. However, users may want to have the
subject of their cover letter automatically populated in the same way.

Teach format-patch to accept the `--cover-from-description` option and
corresponding `format.coverFromDescription` config, allowing users to
populate different parts of the cover letter (including the subject
now).

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-16 10:26:45 +09:00
Junio C Hamano
108b97dc37 Ninth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-15 13:48:04 +09:00
Junio C Hamano
d0ce4d9024 Merge branch 'js/trace2-cap-max-output-files'
The trace2 output, when sending them to files in a designated
directory, can populate the directory with too many files; a
mechanism is introduced to set the maximum number of files and
discard further logs when the maximum is reached.

* js/trace2-cap-max-output-files:
  trace2: write discard message to sentinel files
  trace2: discard new traces if target directory has too many files
  docs: clarify trace2 version invariants
  docs: mention trace2 target-dir mode in git-config
2019-10-15 13:48:01 +09:00
Junio C Hamano
16d9d7184b Merge branch 'en/fast-imexport-nested-tags'
Updates to fast-import/export.

* en/fast-imexport-nested-tags:
  fast-export: handle nested tags
  t9350: add tests for tags of things other than a commit
  fast-export: allow user to request tags be marked with --mark-tags
  fast-export: add support for --import-marks-if-exists
  fast-import: add support for new 'alias' command
  fast-import: allow tags to be identified by mark labels
  fast-import: fix handling of deleted tags
  fast-export: fix exporting a tag and nothing else
2019-10-15 13:48:00 +09:00
Junio C Hamano
d96e31e390 Merge branch 'js/fetch-jobs'
"git fetch --jobs=<n>" allowed <n> parallel jobs when fetching
submodules, but this did not apply to "git fetch --multiple" that
fetches from multiple remote repositories.  It now does.

* js/fetch-jobs:
  fetch: let --jobs=<n> parallelize --multiple, too
2019-10-15 13:48:00 +09:00
Bert Wesarg
edefc31873 format-patch: create leading components of output directory
'git format-patch -o <outdir>' did an equivalent of 'mkdir <outdir>'
not 'mkdir -p <outdir>', which is being corrected.

Avoid the usage of 'adjust_shared_perm' on the leading directories which
may have security implications. Achieved by temporarily disabling of
'config.sharedRepository' like 'git init' does.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-12 11:51:20 +09:00
Emily Shaffer
e0479fa073 documentation: add tutorial for object walking
Existing documentation on object walks seems to be primarily intended
as a reference for those already familiar with the procedure. This
tutorial attempts to give an entry-level guide to a couple of bare-bones
object walks so that new Git contributors can learn the concepts
without having to wade through options parsing or special casing.

The target audience is a Git contributor who is just getting started
with the concept of object walking. The goal is to prepare this
contributor to be able to understand and modify existing commands which
perform revision walks more easily, although it will also prepare
contributors to create new commands which perform walks.

The tutorial covers a basic overview of the structs involved during
object walk, setting up a basic commit walk, setting up a basic
all-object walk, and adding some configuration changes to both walk
types. It intentionally does not cover how to create new commands or
search for options from the command line or gitconfigs.

There is an associated patchset at
https://github.com/nasamuffin/git/tree/revwalk that contains a reference
implementation of the code generated by this tutorial.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-12 10:29:15 +09:00
Johannes Schindelin
57d8f4b4c7 doc(stash): clarify the description of save
The original phrasing of this paragraph made at least one person stumble
over the word "from" (thinking that it was a typo and "from" was
intended), and other readers chimed in, agreeing that it was confusing:
https://public-inbox.org/git/0102016b8d597569-c1f6cfdc-cb45-4428-8737-cb1bc30655d8-000000@eu-west-1.amazonses.com/#t

Let's rewrite that paragraph for clarity.

Inspired-by-a-patch-by: Catalin Criste <cris_linu_w@yahoo.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-11 14:28:04 +09:00
Junio C Hamano
08da6496b6 Eighth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-11 14:24:49 +09:00
Junio C Hamano
07f25ad8b2 Merge branch 'dl/rev-list-doc-cleanup'
Doc update.

* dl/rev-list-doc-cleanup:
  git-rev-list.txt: prune options in synopsis
2019-10-11 14:24:49 +09:00
Junio C Hamano
a73f91774c Merge branch 'ab/pcre-jit-fixes'
A few simplification and bugfixes to PCRE interface.

* ab/pcre-jit-fixes:
  grep: under --debug, show whether PCRE JIT is enabled
  grep: do not enter PCRE2_UTF mode on fixed matching
  grep: stess test PCRE v2 on invalid UTF-8 data
  grep: create a "is_fixed" member in "grep_pat"
  grep: consistently use "p->fixed" in compile_regexp()
  grep: stop using a custom JIT stack with PCRE v1
  grep: stop "using" a custom JIT stack with PCRE v2
  grep: remove overly paranoid BUG(...) code
  grep: use PCRE v2 for optimized fixed-string search
  grep: remove the kwset optimization
  grep: drop support for \0 in --fixed-strings <pattern>
  grep: make the behavior for NUL-byte in patterns sane
  grep tests: move binary pattern tests into their own file
  grep tests: move "grep binary" alongside the rest
  grep: inline the return value of a function call used only once
  t4210: skip more command-line encoding tests on MinGW
  grep: don't use PCRE2?_UTF8 with "log --encoding=<non-utf8>"
  log tests: test regex backends in "--encode=<enc>" tests
2019-10-11 14:24:47 +09:00
Junio C Hamano
aafb75452b Merge branch 'en/clean-nested-with-ignored'
"git clean" fixes.

* en/clean-nested-with-ignored:
  dir: special case check for the possibility that pathspec is NULL
  clean: fix theoretical path corruption
  clean: rewrap overly long line
  clean: avoid removing untracked files in a nested git repository
  clean: disambiguate the definition of -d
  git-clean.txt: do not claim we will delete files with -n/--dry-run
  dir: add commentary explaining match_pathspec_item's return value
  dir: if our pathspec might match files under a dir, recurse into it
  dir: make the DO_MATCH_SUBMODULE code reusable for a non-submodule case
  dir: also check directories for matching pathspecs
  dir: fix off-by-one error in match_pathspec_item
  dir: fix typo in comment
  t7300: add testcases showing failure to clean specified pathspecs
2019-10-11 14:24:46 +09:00
Junio C Hamano
70bf0b755a Seventh batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-09 14:02:58 +09:00
Junio C Hamano
82c80f98e6 Merge branch 'py/git-gui-has-maintainer'
Doc update.

* py/git-gui-has-maintainer:
  Documentation: update the location of the git-gui repo
2019-10-09 14:01:00 +09:00
Junio C Hamano
b744c3af07 Sixth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-07 11:33:44 +09:00
Junio C Hamano
5ecdbfafd6 Merge branch 'ps/my-first-contribution-alphasort'
Docfix.

* ps/my-first-contribution-alphasort:
  doc: MyFirstContribution: fix cmd placement instructions
2019-10-07 11:33:01 +09:00
Junio C Hamano
583cf6232a Merge branch 'ah/doc-submodule-ignore-submodules'
Docfix.

* ah/doc-submodule-ignore-submodules:
  doc: fix reference to --ignore-submodules
2019-10-07 11:33:00 +09:00
Junio C Hamano
980351d1ac Merge branch 'js/doc-patch-text'
Docfix.

* js/doc-patch-text:
  diff, log doc: small grammer, format, and language fixes
  diff, log doc: say "patch text" instead of "patches"
2019-10-07 11:32:59 +09:00
Junio C Hamano
caf150ce7d Merge branch 'gs/commit-graph-progress'
* gs/commit-graph-progress:
  commit-graph: add --[no-]progress to write and verify
2019-10-07 11:32:57 +09:00
Junio C Hamano
7f17913161 Merge branch 'dl/submodule-set-branch'
Docfix.

* dl/submodule-set-branch:
  git-submodule.txt: fix AsciiDoc formatting error
2019-10-07 11:32:56 +09:00
Junio C Hamano
cb3ec6f4ef Merge branch 'cs/pretty-formats-doc-typofix'
Doc fix.

* cs/pretty-formats-doc-typofix:
  doc: minor formatting fix
2019-10-07 11:32:56 +09:00
Junio C Hamano
c90b652afd Fifth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-06 12:25:51 +09:00
Junio C Hamano
b0f8aed48f Merge branch 'ma/user-manual-markup-update'
The markup used in user-manual has been updated to work better with
asciidoctor.

* ma/user-manual-markup-update:
  user-manual.txt: render ASCII art correctly under Asciidoctor
  asciidoctor-extensions.rb: handle "book" doctype in linkgit
  user-manual.txt: change header notation
  user-manual.txt: add missing section label
2019-10-06 12:25:16 +09:00
Junio C Hamano
faf5576a8d Merge branch 'bc/doc-use-docbook-5'
Start using DocBook 5 (instead of DocBook 4.5) as Asciidoctor 2.0
no longer works with the older one.

* bc/doc-use-docbook-5:
  Documentation: fix build with Asciidoctor 2
2019-10-06 12:25:16 +09:00
Junio C Hamano
314fcd32d7 Merge branch 'ma/asciidoctor-more-fixes'
Doc formatting updates.

* ma/asciidoctor-more-fixes:
  gitweb.conf.txt: switch pluses to backticks to help Asciidoctor
  git-merge-index.txt: wrap shell listing in "----"
  git-receive-pack.txt: wrap shell [script] listing in "----"
  git-ls-remote.txt: wrap shell listing in "----"
  Documentation: wrap config listings in "----"
  git-merge-base.txt: render indentations correctly under Asciidoctor
  Documentation: wrap blocks with "--"
2019-10-06 12:25:16 +09:00
Junio C Hamano
70c1cbf515 Merge branch 'ma/asciidoctor-refmiscinfo'
Update support for Asciidoctor documentation toolchain.

* ma/asciidoctor-refmiscinfo:
  doc-diff: replace --cut-header-footer with --cut-footer
  asciidoctor-extensions: provide `<refmiscinfo/>`
  Doc/Makefile: give mansource/-version/-manual attributes
2019-10-06 12:25:15 +09:00
Junio C Hamano
1a155f2e66 Merge branch 'jc/git-gui-has-maintainer'
* jc/git-gui-has-maintainer:
  SubmittingPatches: git-gui has a new maintainer
2019-10-06 12:25:15 +09:00
Denton Liu
11a3d3aadd git-rev-list.txt: prune options in synopsis
The synopsis section in git-rev-list.txt has grown to be a huge list
that probably needs its own synopsis. Since the list is huge, users may
be given the false impression that the list is complete, however it is
not. It is missing many of the available options.

Since the list of options in the synopsis is not only annoying but
actively harmful, replace it with `[<options>]` so users know to
explicitly look through the documentation for further information.

While we're at it, update the optional path notation so that it is more
modern.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-06 09:45:19 +09:00
Pratyush Yadav
7d2f003ee4 Documentation: update the location of the git-gui repo
Signed-off-by: Pratyush Yadav <me@yadavpratyush.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-06 09:45:02 +09:00
Johannes Schindelin
d54dea77db fetch: let --jobs=<n> parallelize --multiple, too
So far, `--jobs=<n>` only parallelizes submodule fetches/clones, not
`--multiple` fetches, which is unintuitive, given that the option's name
does not say anything about submodules in particular.

Let's change that. With this patch, also fetches from multiple remotes
are parallelized.

For backwards-compatibility (and to prepare for a use case where
submodule and multiple-remote fetches may need different parallelization
limits), the config setting `submodule.fetchJobs` still only controls
the submodule part of `git fetch`, while the newly-introduced setting
`fetch.parallel` controls both (but can be overridden for submodules
with `submodule.fetchJobs`).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-06 07:35:58 +09:00
Josh Steadmon
87db61a436 trace2: write discard message to sentinel files
Add a new "discard" event type for trace2 event destinations. When the
trace2 file count check creates a sentinel file, it will include the
normal trace2 output in the sentinel, along with this new discard
event.

Writing this message into the sentinel file is useful for tracking how
often the file count check triggers in practice.

Bump up the event format version since we've added a new event type.

Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-05 17:53:51 +09:00
Josh Steadmon
83e57b04e6 trace2: discard new traces if target directory has too many files
trace2 can write files into a target directory. With heavy usage, this
directory can fill up with files, causing difficulty for
trace-processing systems.

This patch adds a config option (trace2.maxFiles) to set a maximum
number of files that trace2 will write to a target directory. The
following behavior is enabled when the maxFiles is set to a positive
integer:
  When trace2 would write a file to a target directory, first check
  whether or not the traces should be discarded. Traces should be
  discarded if:
    * there is a sentinel file declaring that there are too many files
    * OR, the number of files exceeds trace2.maxFiles.
  In the latter case, we create a sentinel file named git-trace2-discard
  to speed up future checks.

The assumption is that a separate trace-processing system is dealing
with the generated traces; once it processes and removes the sentinel
file, it should be safe to generate new trace files again.

The default value for trace2.maxFiles is zero, which disables the file
count check.

The config can also be overridden with a new environment variable:
GIT_TRACE2_MAX_FILES.

Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-05 17:53:51 +09:00
Josh Steadmon
22541013d0 docs: clarify trace2 version invariants
Make it explicit that we always want trace2 "version" events to be the
first event of any trace session. Also list the changes that would or
would not cause the EVENT format version field to be incremented.

Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-04 09:26:42 +09:00
Josh Steadmon
3d4548e7e2 docs: mention trace2 target-dir mode in git-config
Move the description of trace2's target-directory behavior into the
shared trace2-target-values file so that it is included in both the
git-config and api-trace2 docs. Leave the SID discussion only in
api-trace2 since it's a technical detail.

Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-04 09:26:42 +09:00
Elijah Newren
a1638cfe12 fast-export: allow user to request tags be marked with --mark-tags
Add a new option, --mark-tags, which will output mark identifiers with
each tag object.  This improves the incremental export story with
--export-marks since it will allow us to record that annotated tags have
been exported, and it is also needed as a step towards supporting nested
tags.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-04 07:33:21 +09:00