mirror of
https://github.com/git/git
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c40f0b7877
While both git-rev-list(1) and git-log(1) support `--stdin`, it only accepts commits and files. Most notably, it is impossible to pass any of the pseudo-opts like `--all`, `--glob=` or others via stdin. This makes it hard to use this function in certain scripted scenarios, like when one wants to support queries against specific revisions, but also against reference patterns. While this is theoretically possible by using arguments, this may run into issues once we hit platform limits with sufficiently large queries. And because `--stdin` cannot handle pseudo-opts, the only alternative would be to use a mixture of arguments and standard input, which is cumbersome. Implement support for handling pseudo-opts in both commands to support this usecase better. One notable restriction here is that `--stdin` only supports "stuck" arguments in the form of `--glob=foo`. This is because "unstuck" arguments would also require us to read the next line, which would add quite some complexity to the code. This restriction should be fine for scripted usage though. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1202 lines
45 KiB
Text
1202 lines
45 KiB
Text
Commit Limiting
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~~~~~~~~~~~~~~~
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Besides specifying a range of commits that should be listed using the
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special notations explained in the description, additional commit
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limiting may be applied.
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Using more options generally further limits the output (e.g.
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`--since=<date1>` limits to commits newer than `<date1>`, and using it
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with `--grep=<pattern>` further limits to commits whose log message
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has a line that matches `<pattern>`), unless otherwise noted.
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Note that these are applied before commit
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ordering and formatting options, such as `--reverse`.
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-<number>::
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-n <number>::
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--max-count=<number>::
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Limit the number of commits to output.
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--skip=<number>::
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Skip 'number' commits before starting to show the commit output.
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--since=<date>::
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--after=<date>::
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Show commits more recent than a specific date.
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--since-as-filter=<date>::
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Show all commits more recent than a specific date. This visits
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all commits in the range, rather than stopping at the first commit which
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is older than a specific date.
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--until=<date>::
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--before=<date>::
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Show commits older than a specific date.
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ifdef::git-rev-list[]
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--max-age=<timestamp>::
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--min-age=<timestamp>::
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Limit the commits output to specified time range.
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endif::git-rev-list[]
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--author=<pattern>::
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--committer=<pattern>::
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Limit the commits output to ones with author/committer
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header lines that match the specified pattern (regular
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expression). With more than one `--author=<pattern>`,
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commits whose author matches any of the given patterns are
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chosen (similarly for multiple `--committer=<pattern>`).
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--grep-reflog=<pattern>::
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Limit the commits output to ones with reflog entries that
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match the specified pattern (regular expression). With
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more than one `--grep-reflog`, commits whose reflog message
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matches any of the given patterns are chosen. It is an
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error to use this option unless `--walk-reflogs` is in use.
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--grep=<pattern>::
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Limit the commits output to ones with log message that
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matches the specified pattern (regular expression). With
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more than one `--grep=<pattern>`, commits whose message
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matches any of the given patterns are chosen (but see
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`--all-match`).
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ifndef::git-rev-list[]
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+
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When `--notes` is in effect, the message from the notes is
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matched as if it were part of the log message.
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endif::git-rev-list[]
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--all-match::
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Limit the commits output to ones that match all given `--grep`,
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instead of ones that match at least one.
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--invert-grep::
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Limit the commits output to ones with log message that do not
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match the pattern specified with `--grep=<pattern>`.
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-i::
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--regexp-ignore-case::
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Match the regular expression limiting patterns without regard to letter
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case.
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--basic-regexp::
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Consider the limiting patterns to be basic regular expressions;
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this is the default.
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-E::
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--extended-regexp::
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Consider the limiting patterns to be extended regular expressions
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instead of the default basic regular expressions.
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-F::
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--fixed-strings::
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Consider the limiting patterns to be fixed strings (don't interpret
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pattern as a regular expression).
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-P::
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--perl-regexp::
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Consider the limiting patterns to be Perl-compatible regular
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expressions.
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+
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Support for these types of regular expressions is an optional
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compile-time dependency. If Git wasn't compiled with support for them
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providing this option will cause it to die.
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--remove-empty::
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Stop when a given path disappears from the tree.
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--merges::
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Print only merge commits. This is exactly the same as `--min-parents=2`.
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--no-merges::
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Do not print commits with more than one parent. This is
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exactly the same as `--max-parents=1`.
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--min-parents=<number>::
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--max-parents=<number>::
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--no-min-parents::
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--no-max-parents::
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Show only commits which have at least (or at most) that many parent
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commits. In particular, `--max-parents=1` is the same as `--no-merges`,
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`--min-parents=2` is the same as `--merges`. `--max-parents=0`
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gives all root commits and `--min-parents=3` all octopus merges.
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+
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`--no-min-parents` and `--no-max-parents` reset these limits (to no limit)
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again. Equivalent forms are `--min-parents=0` (any commit has 0 or more
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parents) and `--max-parents=-1` (negative numbers denote no upper limit).
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--first-parent::
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When finding commits to include, follow only the first
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parent commit upon seeing a merge commit. This option
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can give a better overview when viewing the evolution of
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a particular topic branch, because merges into a topic
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branch tend to be only about adjusting to updated upstream
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from time to time, and this option allows you to ignore
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the individual commits brought in to your history by such
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a merge.
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ifdef::git-log[]
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+
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This option also changes default diff format for merge commits
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to `first-parent`, see `--diff-merges=first-parent` for details.
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endif::git-log[]
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--exclude-first-parent-only::
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When finding commits to exclude (with a '{caret}'), follow only
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the first parent commit upon seeing a merge commit.
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This can be used to find the set of changes in a topic branch
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from the point where it diverged from the remote branch, given
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that arbitrary merges can be valid topic branch changes.
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--not::
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Reverses the meaning of the '{caret}' prefix (or lack thereof)
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for all following revision specifiers, up to the next `--not`.
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--all::
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Pretend as if all the refs in `refs/`, along with `HEAD`, are
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listed on the command line as '<commit>'.
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--branches[=<pattern>]::
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Pretend as if all the refs in `refs/heads` are listed
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on the command line as '<commit>'. If '<pattern>' is given, limit
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branches to ones matching given shell glob. If pattern lacks '?',
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'{asterisk}', or '[', '/{asterisk}' at the end is implied.
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--tags[=<pattern>]::
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Pretend as if all the refs in `refs/tags` are listed
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on the command line as '<commit>'. If '<pattern>' is given, limit
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tags to ones matching given shell glob. If pattern lacks '?', '{asterisk}',
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or '[', '/{asterisk}' at the end is implied.
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--remotes[=<pattern>]::
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Pretend as if all the refs in `refs/remotes` are listed
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on the command line as '<commit>'. If '<pattern>' is given, limit
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remote-tracking branches to ones matching given shell glob.
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If pattern lacks '?', '{asterisk}', or '[', '/{asterisk}' at the end is implied.
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--glob=<glob-pattern>::
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Pretend as if all the refs matching shell glob '<glob-pattern>'
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are listed on the command line as '<commit>'. Leading 'refs/',
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is automatically prepended if missing. If pattern lacks '?', '{asterisk}',
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or '[', '/{asterisk}' at the end is implied.
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--exclude=<glob-pattern>::
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Do not include refs matching '<glob-pattern>' that the next `--all`,
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`--branches`, `--tags`, `--remotes`, or `--glob` would otherwise
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consider. Repetitions of this option accumulate exclusion patterns
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up to the next `--all`, `--branches`, `--tags`, `--remotes`, or
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`--glob` option (other options or arguments do not clear
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accumulated patterns).
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+
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The patterns given should not begin with `refs/heads`, `refs/tags`, or
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`refs/remotes` when applied to `--branches`, `--tags`, or `--remotes`,
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respectively, and they must begin with `refs/` when applied to `--glob`
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or `--all`. If a trailing '/{asterisk}' is intended, it must be given
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explicitly.
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--exclude-hidden=[fetch|receive|uploadpack]::
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Do not include refs that would be hidden by `git-fetch`,
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`git-receive-pack` or `git-upload-pack` by consulting the appropriate
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`fetch.hideRefs`, `receive.hideRefs` or `uploadpack.hideRefs`
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configuration along with `transfer.hideRefs` (see
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linkgit:git-config[1]). This option affects the next pseudo-ref option
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`--all` or `--glob` and is cleared after processing them.
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--reflog::
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Pretend as if all objects mentioned by reflogs are listed on the
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command line as `<commit>`.
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--alternate-refs::
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Pretend as if all objects mentioned as ref tips of alternate
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repositories were listed on the command line. An alternate
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repository is any repository whose object directory is specified
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in `objects/info/alternates`. The set of included objects may
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be modified by `core.alternateRefsCommand`, etc. See
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linkgit:git-config[1].
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--single-worktree::
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By default, all working trees will be examined by the
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following options when there are more than one (see
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linkgit:git-worktree[1]): `--all`, `--reflog` and
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`--indexed-objects`.
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This option forces them to examine the current working tree
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only.
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--ignore-missing::
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Upon seeing an invalid object name in the input, pretend as if
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the bad input was not given.
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ifndef::git-rev-list[]
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--bisect::
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Pretend as if the bad bisection ref `refs/bisect/bad`
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was listed and as if it was followed by `--not` and the good
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bisection refs `refs/bisect/good-*` on the command
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line.
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endif::git-rev-list[]
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--stdin::
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In addition to getting arguments from the command line, read
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them for standard input as well. This accepts commits and
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pseudo-options like `--all` and `--glob=`. When a `--` separator
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is seen, the following input is treated as paths and used to
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limit the result.
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ifdef::git-rev-list[]
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--quiet::
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Don't print anything to standard output. This form
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is primarily meant to allow the caller to
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test the exit status to see if a range of objects is fully
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connected (or not). It is faster than redirecting stdout
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to `/dev/null` as the output does not have to be formatted.
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--disk-usage::
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--disk-usage=human::
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Suppress normal output; instead, print the sum of the bytes used
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for on-disk storage by the selected commits or objects. This is
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equivalent to piping the output into `git cat-file
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--batch-check='%(objectsize:disk)'`, except that it runs much
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faster (especially with `--use-bitmap-index`). See the `CAVEATS`
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section in linkgit:git-cat-file[1] for the limitations of what
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"on-disk storage" means.
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With the optional value `human`, on-disk storage size is shown
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in human-readable string(e.g. 12.24 Kib, 3.50 Mib).
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endif::git-rev-list[]
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--cherry-mark::
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Like `--cherry-pick` (see below) but mark equivalent commits
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with `=` rather than omitting them, and inequivalent ones with `+`.
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--cherry-pick::
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Omit any commit that introduces the same change as
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another commit on the ``other side'' when the set of
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commits are limited with symmetric difference.
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+
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For example, if you have two branches, `A` and `B`, a usual way
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to list all commits on only one side of them is with
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`--left-right` (see the example below in the description of
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the `--left-right` option). However, it shows the commits that were
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cherry-picked from the other branch (for example, ``3rd on b'' may be
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cherry-picked from branch A). With this option, such pairs of commits are
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excluded from the output.
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--left-only::
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--right-only::
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List only commits on the respective side of a symmetric difference,
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i.e. only those which would be marked `<` resp. `>` by
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`--left-right`.
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+
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For example, `--cherry-pick --right-only A...B` omits those
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commits from `B` which are in `A` or are patch-equivalent to a commit in
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`A`. In other words, this lists the `+` commits from `git cherry A B`.
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More precisely, `--cherry-pick --right-only --no-merges` gives the exact
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list.
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--cherry::
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A synonym for `--right-only --cherry-mark --no-merges`; useful to
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limit the output to the commits on our side and mark those that
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have been applied to the other side of a forked history with
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`git log --cherry upstream...mybranch`, similar to
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`git cherry upstream mybranch`.
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-g::
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--walk-reflogs::
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Instead of walking the commit ancestry chain, walk
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reflog entries from the most recent one to older ones.
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When this option is used you cannot specify commits to
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exclude (that is, '{caret}commit', 'commit1..commit2',
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and 'commit1\...commit2' notations cannot be used).
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+
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With `--pretty` format other than `oneline` and `reference` (for obvious reasons),
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this causes the output to have two extra lines of information
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taken from the reflog. The reflog designator in the output may be shown
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as `ref@{Nth}` (where `Nth` is the reverse-chronological index in the
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reflog) or as `ref@{timestamp}` (with the timestamp for that entry),
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depending on a few rules:
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+
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--
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1. If the starting point is specified as `ref@{Nth}`, show the index
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format.
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+
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2. If the starting point was specified as `ref@{now}`, show the
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timestamp format.
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+
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3. If neither was used, but `--date` was given on the command line, show
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the timestamp in the format requested by `--date`.
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+
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4. Otherwise, show the index format.
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--
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+
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Under `--pretty=oneline`, the commit message is
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prefixed with this information on the same line.
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This option cannot be combined with `--reverse`.
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See also linkgit:git-reflog[1].
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+
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Under `--pretty=reference`, this information will not be shown at all.
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--merge::
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After a failed merge, show refs that touch files having a
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conflict and don't exist on all heads to merge.
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--boundary::
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Output excluded boundary commits. Boundary commits are
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prefixed with `-`.
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ifdef::git-rev-list[]
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--use-bitmap-index::
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Try to speed up the traversal using the pack bitmap index (if
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one is available). Note that when traversing with `--objects`,
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trees and blobs will not have their associated path printed.
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--progress=<header>::
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Show progress reports on stderr as objects are considered. The
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`<header>` text will be printed with each progress update.
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endif::git-rev-list[]
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History Simplification
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~~~~~~~~~~~~~~~~~~~~~~
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Sometimes you are only interested in parts of the history, for example the
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commits modifying a particular <path>. But there are two parts of
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'History Simplification', one part is selecting the commits and the other
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is how to do it, as there are various strategies to simplify the history.
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The following options select the commits to be shown:
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<paths>::
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Commits modifying the given <paths> are selected.
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--simplify-by-decoration::
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Commits that are referred by some branch or tag are selected.
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Note that extra commits can be shown to give a meaningful history.
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The following options affect the way the simplification is performed:
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Default mode::
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Simplifies the history to the simplest history explaining the
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final state of the tree. Simplest because it prunes some side
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branches if the end result is the same (i.e. merging branches
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with the same content)
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--show-pulls::
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Include all commits from the default mode, but also any merge
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commits that are not TREESAME to the first parent but are
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TREESAME to a later parent. This mode is helpful for showing
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the merge commits that "first introduced" a change to a branch.
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--full-history::
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Same as the default mode, but does not prune some history.
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--dense::
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Only the selected commits are shown, plus some to have a
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meaningful history.
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--sparse::
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All commits in the simplified history are shown.
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--simplify-merges::
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Additional option to `--full-history` to remove some needless
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merges from the resulting history, as there are no selected
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commits contributing to this merge.
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--ancestry-path[=<commit>]::
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When given a range of commits to display (e.g. 'commit1..commit2'
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or 'commit2 {caret}commit1'), only display commits in that range
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that are ancestors of <commit>, descendants of <commit>, or
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<commit> itself. If no commit is specified, use 'commit1' (the
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excluded part of the range) as <commit>. Can be passed multiple
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times; if so, a commit is included if it is any of the commits
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given or if it is an ancestor or descendant of one of them.
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A more detailed explanation follows.
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Suppose you specified `foo` as the <paths>. We shall call commits
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that modify `foo` !TREESAME, and the rest TREESAME. (In a diff
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filtered for `foo`, they look different and equal, respectively.)
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In the following, we will always refer to the same example history to
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illustrate the differences between simplification settings. We assume
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that you are filtering for a file `foo` in this commit graph:
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-----------------------------------------------------------------------
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.-A---M---N---O---P---Q
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/ / / / / /
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I B C D E Y
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\ / / / / /
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`-------------' X
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-----------------------------------------------------------------------
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The horizontal line of history A---Q is taken to be the first parent of
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each merge. The commits are:
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* `I` is the initial commit, in which `foo` exists with contents
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``asdf'', and a file `quux` exists with contents ``quux''. Initial
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commits are compared to an empty tree, so `I` is !TREESAME.
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* In `A`, `foo` contains just ``foo''.
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* `B` contains the same change as `A`. Its merge `M` is trivial and
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hence TREESAME to all parents.
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* `C` does not change `foo`, but its merge `N` changes it to ``foobar'',
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so it is not TREESAME to any parent.
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* `D` sets `foo` to ``baz''. Its merge `O` combines the strings from
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`N` and `D` to ``foobarbaz''; i.e., it is not TREESAME to any parent.
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* `E` changes `quux` to ``xyzzy'', and its merge `P` combines the
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strings to ``quux xyzzy''. `P` is TREESAME to `O`, but not to `E`.
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* `X` is an independent root commit that added a new file `side`, and `Y`
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modified it. `Y` is TREESAME to `X`. Its merge `Q` added `side` to `P`, and
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`Q` is TREESAME to `P`, but not to `Y`.
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|
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`rev-list` walks backwards through history, including or excluding
|
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commits based on whether `--full-history` and/or parent rewriting
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(via `--parents` or `--children`) are used. The following settings
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are available.
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Default mode::
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Commits are included if they are not TREESAME to any parent
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(though this can be changed, see `--sparse` below). If the
|
|
commit was a merge, and it was TREESAME to one parent, follow
|
|
only that parent. (Even if there are several TREESAME
|
|
parents, follow only one of them.) Otherwise, follow all
|
|
parents.
|
|
+
|
|
This results in:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
.-A---N---O
|
|
/ / /
|
|
I---------D
|
|
-----------------------------------------------------------------------
|
|
+
|
|
Note how the rule to only follow the TREESAME parent, if one is
|
|
available, removed `B` from consideration entirely. `C` was
|
|
considered via `N`, but is TREESAME. Root commits are compared to an
|
|
empty tree, so `I` is !TREESAME.
|
|
+
|
|
Parent/child relations are only visible with `--parents`, but that does
|
|
not affect the commits selected in default mode, so we have shown the
|
|
parent lines.
|
|
|
|
--full-history without parent rewriting::
|
|
This mode differs from the default in one point: always follow
|
|
all parents of a merge, even if it is TREESAME to one of them.
|
|
Even if more than one side of the merge has commits that are
|
|
included, this does not imply that the merge itself is! In
|
|
the example, we get
|
|
+
|
|
-----------------------------------------------------------------------
|
|
I A B N D O P Q
|
|
-----------------------------------------------------------------------
|
|
+
|
|
`M` was excluded because it is TREESAME to both parents. `E`,
|
|
`C` and `B` were all walked, but only `B` was !TREESAME, so the others
|
|
do not appear.
|
|
+
|
|
Note that without parent rewriting, it is not really possible to talk
|
|
about the parent/child relationships between the commits, so we show
|
|
them disconnected.
|
|
|
|
--full-history with parent rewriting::
|
|
Ordinary commits are only included if they are !TREESAME
|
|
(though this can be changed, see `--sparse` below).
|
|
+
|
|
Merges are always included. However, their parent list is rewritten:
|
|
Along each parent, prune away commits that are not included
|
|
themselves. This results in
|
|
+
|
|
-----------------------------------------------------------------------
|
|
.-A---M---N---O---P---Q
|
|
/ / / / /
|
|
I B / D /
|
|
\ / / / /
|
|
`-------------'
|
|
-----------------------------------------------------------------------
|
|
+
|
|
Compare to `--full-history` without rewriting above. Note that `E`
|
|
was pruned away because it is TREESAME, but the parent list of P was
|
|
rewritten to contain `E`'s parent `I`. The same happened for `C` and
|
|
`N`, and `X`, `Y` and `Q`.
|
|
|
|
In addition to the above settings, you can change whether TREESAME
|
|
affects inclusion:
|
|
|
|
--dense::
|
|
Commits that are walked are included if they are not TREESAME
|
|
to any parent.
|
|
|
|
--sparse::
|
|
All commits that are walked are included.
|
|
+
|
|
Note that without `--full-history`, this still simplifies merges: if
|
|
one of the parents is TREESAME, we follow only that one, so the other
|
|
sides of the merge are never walked.
|
|
|
|
--simplify-merges::
|
|
First, build a history graph in the same way that
|
|
`--full-history` with parent rewriting does (see above).
|
|
+
|
|
Then simplify each commit `C` to its replacement `C'` in the final
|
|
history according to the following rules:
|
|
+
|
|
--
|
|
* Set `C'` to `C`.
|
|
+
|
|
* Replace each parent `P` of `C'` with its simplification `P'`. In
|
|
the process, drop parents that are ancestors of other parents or that are
|
|
root commits TREESAME to an empty tree, and remove duplicates, but take care
|
|
to never drop all parents that we are TREESAME to.
|
|
+
|
|
* If after this parent rewriting, `C'` is a root or merge commit (has
|
|
zero or >1 parents), a boundary commit, or !TREESAME, it remains.
|
|
Otherwise, it is replaced with its only parent.
|
|
--
|
|
+
|
|
The effect of this is best shown by way of comparing to
|
|
`--full-history` with parent rewriting. The example turns into:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
.-A---M---N---O
|
|
/ / /
|
|
I B D
|
|
\ / /
|
|
`---------'
|
|
-----------------------------------------------------------------------
|
|
+
|
|
Note the major differences in `N`, `P`, and `Q` over `--full-history`:
|
|
+
|
|
--
|
|
* `N`'s parent list had `I` removed, because it is an ancestor of the
|
|
other parent `M`. Still, `N` remained because it is !TREESAME.
|
|
+
|
|
* `P`'s parent list similarly had `I` removed. `P` was then
|
|
removed completely, because it had one parent and is TREESAME.
|
|
+
|
|
* `Q`'s parent list had `Y` simplified to `X`. `X` was then removed, because it
|
|
was a TREESAME root. `Q` was then removed completely, because it had one
|
|
parent and is TREESAME.
|
|
--
|
|
|
|
There is another simplification mode available:
|
|
|
|
--ancestry-path[=<commit>]::
|
|
Limit the displayed commits to those which are an ancestor of
|
|
<commit>, or which are a descendant of <commit>, or are <commit>
|
|
itself.
|
|
+
|
|
As an example use case, consider the following commit history:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
D---E-------F
|
|
/ \ \
|
|
B---C---G---H---I---J
|
|
/ \
|
|
A-------K---------------L--M
|
|
-----------------------------------------------------------------------
|
|
+
|
|
A regular 'D..M' computes the set of commits that are ancestors of `M`,
|
|
but excludes the ones that are ancestors of `D`. This is useful to see
|
|
what happened to the history leading to `M` since `D`, in the sense
|
|
that ``what does `M` have that did not exist in `D`''. The result in this
|
|
example would be all the commits, except `A` and `B` (and `D` itself,
|
|
of course).
|
|
+
|
|
When we want to find out what commits in `M` are contaminated with the
|
|
bug introduced by `D` and need fixing, however, we might want to view
|
|
only the subset of 'D..M' that are actually descendants of `D`, i.e.
|
|
excluding `C` and `K`. This is exactly what the `--ancestry-path`
|
|
option does. Applied to the 'D..M' range, it results in:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
E-------F
|
|
\ \
|
|
G---H---I---J
|
|
\
|
|
L--M
|
|
-----------------------------------------------------------------------
|
|
+
|
|
We can also use `--ancestry-path=D` instead of `--ancestry-path` which
|
|
means the same thing when applied to the 'D..M' range but is just more
|
|
explicit.
|
|
+
|
|
If we instead are interested in a given topic within this range, and all
|
|
commits affected by that topic, we may only want to view the subset of
|
|
`D..M` which contain that topic in their ancestry path. So, using
|
|
`--ancestry-path=H D..M` for example would result in:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
E
|
|
\
|
|
G---H---I---J
|
|
\
|
|
L--M
|
|
-----------------------------------------------------------------------
|
|
+
|
|
Whereas `--ancestry-path=K D..M` would result in
|
|
+
|
|
-----------------------------------------------------------------------
|
|
K---------------L--M
|
|
-----------------------------------------------------------------------
|
|
|
|
Before discussing another option, `--show-pulls`, we need to
|
|
create a new example history.
|
|
|
|
A common problem users face when looking at simplified history is that a
|
|
commit they know changed a file somehow does not appear in the file's
|
|
simplified history. Let's demonstrate a new example and show how options
|
|
such as `--full-history` and `--simplify-merges` works in that case:
|
|
|
|
-----------------------------------------------------------------------
|
|
.-A---M-----C--N---O---P
|
|
/ / \ \ \/ / /
|
|
I B \ R-'`-Z' /
|
|
\ / \/ /
|
|
\ / /\ /
|
|
`---X--' `---Y--'
|
|
-----------------------------------------------------------------------
|
|
|
|
For this example, suppose `I` created `file.txt` which was modified by
|
|
`A`, `B`, and `X` in different ways. The single-parent commits `C`, `Z`,
|
|
and `Y` do not change `file.txt`. The merge commit `M` was created by
|
|
resolving the merge conflict to include both changes from `A` and `B`
|
|
and hence is not TREESAME to either. The merge commit `R`, however, was
|
|
created by ignoring the contents of `file.txt` at `M` and taking only
|
|
the contents of `file.txt` at `X`. Hence, `R` is TREESAME to `X` but not
|
|
`M`. Finally, the natural merge resolution to create `N` is to take the
|
|
contents of `file.txt` at `R`, so `N` is TREESAME to `R` but not `C`.
|
|
The merge commits `O` and `P` are TREESAME to their first parents, but
|
|
not to their second parents, `Z` and `Y` respectively.
|
|
|
|
When using the default mode, `N` and `R` both have a TREESAME parent, so
|
|
those edges are walked and the others are ignored. The resulting history
|
|
graph is:
|
|
|
|
-----------------------------------------------------------------------
|
|
I---X
|
|
-----------------------------------------------------------------------
|
|
|
|
When using `--full-history`, Git walks every edge. This will discover
|
|
the commits `A` and `B` and the merge `M`, but also will reveal the
|
|
merge commits `O` and `P`. With parent rewriting, the resulting graph is:
|
|
|
|
-----------------------------------------------------------------------
|
|
.-A---M--------N---O---P
|
|
/ / \ \ \/ / /
|
|
I B \ R-'`--' /
|
|
\ / \/ /
|
|
\ / /\ /
|
|
`---X--' `------'
|
|
-----------------------------------------------------------------------
|
|
|
|
Here, the merge commits `O` and `P` contribute extra noise, as they did
|
|
not actually contribute a change to `file.txt`. They only merged a topic
|
|
that was based on an older version of `file.txt`. This is a common
|
|
issue in repositories using a workflow where many contributors work in
|
|
parallel and merge their topic branches along a single trunk: many
|
|
unrelated merges appear in the `--full-history` results.
|
|
|
|
When using the `--simplify-merges` option, the commits `O` and `P`
|
|
disappear from the results. This is because the rewritten second parents
|
|
of `O` and `P` are reachable from their first parents. Those edges are
|
|
removed and then the commits look like single-parent commits that are
|
|
TREESAME to their parent. This also happens to the commit `N`, resulting
|
|
in a history view as follows:
|
|
|
|
-----------------------------------------------------------------------
|
|
.-A---M--.
|
|
/ / \
|
|
I B R
|
|
\ / /
|
|
\ / /
|
|
`---X--'
|
|
-----------------------------------------------------------------------
|
|
|
|
In this view, we see all of the important single-parent changes from
|
|
`A`, `B`, and `X`. We also see the carefully-resolved merge `M` and the
|
|
not-so-carefully-resolved merge `R`. This is usually enough information
|
|
to determine why the commits `A` and `B` "disappeared" from history in
|
|
the default view. However, there are a few issues with this approach.
|
|
|
|
The first issue is performance. Unlike any previous option, the
|
|
`--simplify-merges` option requires walking the entire commit history
|
|
before returning a single result. This can make the option difficult to
|
|
use for very large repositories.
|
|
|
|
The second issue is one of auditing. When many contributors are working
|
|
on the same repository, it is important which merge commits introduced
|
|
a change into an important branch. The problematic merge `R` above is
|
|
not likely to be the merge commit that was used to merge into an
|
|
important branch. Instead, the merge `N` was used to merge `R` and `X`
|
|
into the important branch. This commit may have information about why
|
|
the change `X` came to override the changes from `A` and `B` in its
|
|
commit message.
|
|
|
|
--show-pulls::
|
|
In addition to the commits shown in the default history, show
|
|
each merge commit that is not TREESAME to its first parent but
|
|
is TREESAME to a later parent.
|
|
+
|
|
When a merge commit is included by `--show-pulls`, the merge is
|
|
treated as if it "pulled" the change from another branch. When using
|
|
`--show-pulls` on this example (and no other options) the resulting
|
|
graph is:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
I---X---R---N
|
|
-----------------------------------------------------------------------
|
|
+
|
|
Here, the merge commits `R` and `N` are included because they pulled
|
|
the commits `X` and `R` into the base branch, respectively. These
|
|
merges are the reason the commits `A` and `B` do not appear in the
|
|
default history.
|
|
+
|
|
When `--show-pulls` is paired with `--simplify-merges`, the
|
|
graph includes all of the necessary information:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
.-A---M--. N
|
|
/ / \ /
|
|
I B R
|
|
\ / /
|
|
\ / /
|
|
`---X--'
|
|
-----------------------------------------------------------------------
|
|
+
|
|
Notice that since `M` is reachable from `R`, the edge from `N` to `M`
|
|
was simplified away. However, `N` still appears in the history as an
|
|
important commit because it "pulled" the change `R` into the main
|
|
branch.
|
|
|
|
The `--simplify-by-decoration` option allows you to view only the
|
|
big picture of the topology of the history, by omitting commits
|
|
that are not referenced by tags. Commits are marked as !TREESAME
|
|
(in other words, kept after history simplification rules described
|
|
above) if (1) they are referenced by tags, or (2) they change the
|
|
contents of the paths given on the command line. All other
|
|
commits are marked as TREESAME (subject to be simplified away).
|
|
|
|
ifndef::git-shortlog[]
|
|
ifdef::git-rev-list[]
|
|
Bisection Helpers
|
|
~~~~~~~~~~~~~~~~~
|
|
|
|
--bisect::
|
|
Limit output to the one commit object which is roughly halfway between
|
|
included and excluded commits. Note that the bad bisection ref
|
|
`refs/bisect/bad` is added to the included commits (if it
|
|
exists) and the good bisection refs `refs/bisect/good-*` are
|
|
added to the excluded commits (if they exist). Thus, supposing there
|
|
are no refs in `refs/bisect/`, if
|
|
+
|
|
-----------------------------------------------------------------------
|
|
$ git rev-list --bisect foo ^bar ^baz
|
|
-----------------------------------------------------------------------
|
|
+
|
|
outputs 'midpoint', the output of the two commands
|
|
+
|
|
-----------------------------------------------------------------------
|
|
$ git rev-list foo ^midpoint
|
|
$ git rev-list midpoint ^bar ^baz
|
|
-----------------------------------------------------------------------
|
|
+
|
|
would be of roughly the same length. Finding the change which
|
|
introduces a regression is thus reduced to a binary search: repeatedly
|
|
generate and test new 'midpoint's until the commit chain is of length
|
|
one.
|
|
|
|
--bisect-vars::
|
|
This calculates the same as `--bisect`, except that refs in
|
|
`refs/bisect/` are not used, and except that this outputs
|
|
text ready to be eval'ed by the shell. These lines will assign the
|
|
name of the midpoint revision to the variable `bisect_rev`, and the
|
|
expected number of commits to be tested after `bisect_rev` is tested
|
|
to `bisect_nr`, the expected number of commits to be tested if
|
|
`bisect_rev` turns out to be good to `bisect_good`, the expected
|
|
number of commits to be tested if `bisect_rev` turns out to be bad to
|
|
`bisect_bad`, and the number of commits we are bisecting right now to
|
|
`bisect_all`.
|
|
|
|
--bisect-all::
|
|
This outputs all the commit objects between the included and excluded
|
|
commits, ordered by their distance to the included and excluded
|
|
commits. Refs in `refs/bisect/` are not used. The farthest
|
|
from them is displayed first. (This is the only one displayed by
|
|
`--bisect`.)
|
|
+
|
|
This is useful because it makes it easy to choose a good commit to
|
|
test when you want to avoid to test some of them for some reason (they
|
|
may not compile for example).
|
|
+
|
|
This option can be used along with `--bisect-vars`, in this case,
|
|
after all the sorted commit objects, there will be the same text as if
|
|
`--bisect-vars` had been used alone.
|
|
endif::git-rev-list[]
|
|
endif::git-shortlog[]
|
|
|
|
ifndef::git-shortlog[]
|
|
Commit Ordering
|
|
~~~~~~~~~~~~~~~
|
|
|
|
By default, the commits are shown in reverse chronological order.
|
|
|
|
--date-order::
|
|
Show no parents before all of its children are shown, but
|
|
otherwise show commits in the commit timestamp order.
|
|
|
|
--author-date-order::
|
|
Show no parents before all of its children are shown, but
|
|
otherwise show commits in the author timestamp order.
|
|
|
|
--topo-order::
|
|
Show no parents before all of its children are shown, and
|
|
avoid showing commits on multiple lines of history
|
|
intermixed.
|
|
+
|
|
For example, in a commit history like this:
|
|
+
|
|
----------------------------------------------------------------
|
|
|
|
---1----2----4----7
|
|
\ \
|
|
3----5----6----8---
|
|
|
|
----------------------------------------------------------------
|
|
+
|
|
where the numbers denote the order of commit timestamps, `git
|
|
rev-list` and friends with `--date-order` show the commits in the
|
|
timestamp order: 8 7 6 5 4 3 2 1.
|
|
+
|
|
With `--topo-order`, they would show 8 6 5 3 7 4 2 1 (or 8 7 4 2 6 5
|
|
3 1); some older commits are shown before newer ones in order to
|
|
avoid showing the commits from two parallel development track mixed
|
|
together.
|
|
|
|
--reverse::
|
|
Output the commits chosen to be shown (see Commit Limiting
|
|
section above) in reverse order. Cannot be combined with
|
|
`--walk-reflogs`.
|
|
endif::git-shortlog[]
|
|
|
|
ifndef::git-shortlog[]
|
|
Object Traversal
|
|
~~~~~~~~~~~~~~~~
|
|
|
|
These options are mostly targeted for packing of Git repositories.
|
|
|
|
ifdef::git-rev-list[]
|
|
--objects::
|
|
Print the object IDs of any object referenced by the listed
|
|
commits. `--objects foo ^bar` thus means ``send me
|
|
all object IDs which I need to download if I have the commit
|
|
object _bar_ but not _foo_''. See also `--object-names` below.
|
|
|
|
--in-commit-order::
|
|
Print tree and blob ids in order of the commits. The tree
|
|
and blob ids are printed after they are first referenced
|
|
by a commit.
|
|
|
|
--objects-edge::
|
|
Similar to `--objects`, but also print the IDs of excluded
|
|
commits prefixed with a ``-'' character. This is used by
|
|
linkgit:git-pack-objects[1] to build a ``thin'' pack, which records
|
|
objects in deltified form based on objects contained in these
|
|
excluded commits to reduce network traffic.
|
|
|
|
--objects-edge-aggressive::
|
|
Similar to `--objects-edge`, but it tries harder to find excluded
|
|
commits at the cost of increased time. This is used instead of
|
|
`--objects-edge` to build ``thin'' packs for shallow repositories.
|
|
|
|
--indexed-objects::
|
|
Pretend as if all trees and blobs used by the index are listed
|
|
on the command line. Note that you probably want to use
|
|
`--objects`, too.
|
|
|
|
--unpacked::
|
|
Only useful with `--objects`; print the object IDs that are not
|
|
in packs.
|
|
|
|
--object-names::
|
|
Only useful with `--objects`; print the names of the object IDs
|
|
that are found. This is the default behavior. Note that the
|
|
"name" of each object is ambiguous, and mostly intended as a
|
|
hint for packing objects. In particular: no distinction is made between
|
|
the names of tags, trees, and blobs; path names may be modified
|
|
to remove newlines; and if an object would appear multiple times
|
|
with different names, only one name is shown.
|
|
|
|
--no-object-names::
|
|
Only useful with `--objects`; does not print the names of the object
|
|
IDs that are found. This inverts `--object-names`. This flag allows
|
|
the output to be more easily parsed by commands such as
|
|
linkgit:git-cat-file[1].
|
|
|
|
--filter=<filter-spec>::
|
|
Only useful with one of the `--objects*`; omits objects (usually
|
|
blobs) from the list of printed objects. The '<filter-spec>'
|
|
may be one of the following:
|
|
+
|
|
The form '--filter=blob:none' omits all blobs.
|
|
+
|
|
The form '--filter=blob:limit=<n>[kmg]' omits blobs larger than n bytes
|
|
or units. n may be zero. The suffixes k, m, and g can be used to name
|
|
units in KiB, MiB, or GiB. For example, 'blob:limit=1k' is the same
|
|
as 'blob:limit=1024'.
|
|
+
|
|
The form '--filter=object:type=(tag|commit|tree|blob)' omits all objects
|
|
which are not of the requested type.
|
|
+
|
|
The form '--filter=sparse:oid=<blob-ish>' uses a sparse-checkout
|
|
specification contained in the blob (or blob-expression) '<blob-ish>'
|
|
to omit blobs that would not be required for a sparse checkout on
|
|
the requested refs.
|
|
+
|
|
The form '--filter=tree:<depth>' omits all blobs and trees whose depth
|
|
from the root tree is >= <depth> (minimum depth if an object is located
|
|
at multiple depths in the commits traversed). <depth>=0 will not include
|
|
any trees or blobs unless included explicitly in the command-line (or
|
|
standard input when --stdin is used). <depth>=1 will include only the
|
|
tree and blobs which are referenced directly by a commit reachable from
|
|
<commit> or an explicitly-given object. <depth>=2 is like <depth>=1
|
|
while also including trees and blobs one more level removed from an
|
|
explicitly-given commit or tree.
|
|
+
|
|
Note that the form '--filter=sparse:path=<path>' that wants to read
|
|
from an arbitrary path on the filesystem has been dropped for security
|
|
reasons.
|
|
+
|
|
Multiple '--filter=' flags can be specified to combine filters. Only
|
|
objects which are accepted by every filter are included.
|
|
+
|
|
The form '--filter=combine:<filter1>+<filter2>+...<filterN>' can also be
|
|
used to combined several filters, but this is harder than just repeating
|
|
the '--filter' flag and is usually not necessary. Filters are joined by
|
|
'{plus}' and individual filters are %-encoded (i.e. URL-encoded).
|
|
Besides the '{plus}' and '%' characters, the following characters are
|
|
reserved and also must be encoded: `~!@#$^&*()[]{}\;",<>?`+'`+
|
|
as well as all characters with ASCII code <= `0x20`, which includes
|
|
space and newline.
|
|
+
|
|
Other arbitrary characters can also be encoded. For instance,
|
|
'combine:tree:3+blob:none' and 'combine:tree%3A3+blob%3Anone' are
|
|
equivalent.
|
|
|
|
--no-filter::
|
|
Turn off any previous `--filter=` argument.
|
|
|
|
--filter-provided-objects::
|
|
Filter the list of explicitly provided objects, which would otherwise
|
|
always be printed even if they did not match any of the filters. Only
|
|
useful with `--filter=`.
|
|
|
|
--filter-print-omitted::
|
|
Only useful with `--filter=`; prints a list of the objects omitted
|
|
by the filter. Object IDs are prefixed with a ``~'' character.
|
|
|
|
--missing=<missing-action>::
|
|
A debug option to help with future "partial clone" development.
|
|
This option specifies how missing objects are handled.
|
|
+
|
|
The form '--missing=error' requests that rev-list stop with an error if
|
|
a missing object is encountered. This is the default action.
|
|
+
|
|
The form '--missing=allow-any' will allow object traversal to continue
|
|
if a missing object is encountered. Missing objects will silently be
|
|
omitted from the results.
|
|
+
|
|
The form '--missing=allow-promisor' is like 'allow-any', but will only
|
|
allow object traversal to continue for EXPECTED promisor missing objects.
|
|
Unexpected missing objects will raise an error.
|
|
+
|
|
The form '--missing=print' is like 'allow-any', but will also print a
|
|
list of the missing objects. Object IDs are prefixed with a ``?'' character.
|
|
|
|
--exclude-promisor-objects::
|
|
(For internal use only.) Prefilter object traversal at
|
|
promisor boundary. This is used with partial clone. This is
|
|
stronger than `--missing=allow-promisor` because it limits the
|
|
traversal, rather than just silencing errors about missing
|
|
objects.
|
|
endif::git-rev-list[]
|
|
|
|
--no-walk[=(sorted|unsorted)]::
|
|
Only show the given commits, but do not traverse their ancestors.
|
|
This has no effect if a range is specified. If the argument
|
|
`unsorted` is given, the commits are shown in the order they were
|
|
given on the command line. Otherwise (if `sorted` or no argument
|
|
was given), the commits are shown in reverse chronological order
|
|
by commit time.
|
|
Cannot be combined with `--graph`.
|
|
|
|
--do-walk::
|
|
Overrides a previous `--no-walk`.
|
|
endif::git-shortlog[]
|
|
|
|
ifndef::git-shortlog[]
|
|
Commit Formatting
|
|
~~~~~~~~~~~~~~~~~
|
|
|
|
ifdef::git-rev-list[]
|
|
Using these options, linkgit:git-rev-list[1] will act similar to the
|
|
more specialized family of commit log tools: linkgit:git-log[1],
|
|
linkgit:git-show[1], and linkgit:git-whatchanged[1]
|
|
endif::git-rev-list[]
|
|
|
|
include::pretty-options.txt[]
|
|
|
|
--relative-date::
|
|
Synonym for `--date=relative`.
|
|
|
|
--date=<format>::
|
|
Only takes effect for dates shown in human-readable format, such
|
|
as when using `--pretty`. `log.date` config variable sets a default
|
|
value for the log command's `--date` option. By default, dates
|
|
are shown in the original time zone (either committer's or
|
|
author's). If `-local` is appended to the format (e.g.,
|
|
`iso-local`), the user's local time zone is used instead.
|
|
+
|
|
--
|
|
`--date=relative` shows dates relative to the current time,
|
|
e.g. ``2 hours ago''. The `-local` option has no effect for
|
|
`--date=relative`.
|
|
|
|
`--date=local` is an alias for `--date=default-local`.
|
|
|
|
`--date=iso` (or `--date=iso8601`) shows timestamps in a ISO 8601-like format.
|
|
The differences to the strict ISO 8601 format are:
|
|
|
|
- a space instead of the `T` date/time delimiter
|
|
- a space between time and time zone
|
|
- no colon between hours and minutes of the time zone
|
|
|
|
`--date=iso-strict` (or `--date=iso8601-strict`) shows timestamps in strict
|
|
ISO 8601 format.
|
|
|
|
`--date=rfc` (or `--date=rfc2822`) shows timestamps in RFC 2822
|
|
format, often found in email messages.
|
|
|
|
`--date=short` shows only the date, but not the time, in `YYYY-MM-DD` format.
|
|
|
|
`--date=raw` shows the date as seconds since the epoch (1970-01-01
|
|
00:00:00 UTC), followed by a space, and then the timezone as an offset
|
|
from UTC (a `+` or `-` with four digits; the first two are hours, and
|
|
the second two are minutes). I.e., as if the timestamp were formatted
|
|
with `strftime("%s %z")`).
|
|
Note that the `-local` option does not affect the seconds-since-epoch
|
|
value (which is always measured in UTC), but does switch the accompanying
|
|
timezone value.
|
|
|
|
`--date=human` shows the timezone if the timezone does not match the
|
|
current time-zone, and doesn't print the whole date if that matches
|
|
(ie skip printing year for dates that are "this year", but also skip
|
|
the whole date itself if it's in the last few days and we can just say
|
|
what weekday it was). For older dates the hour and minute is also
|
|
omitted.
|
|
|
|
`--date=unix` shows the date as a Unix epoch timestamp (seconds since
|
|
1970). As with `--raw`, this is always in UTC and therefore `-local`
|
|
has no effect.
|
|
|
|
`--date=format:...` feeds the format `...` to your system `strftime`,
|
|
except for %s, %z, and %Z, which are handled internally.
|
|
Use `--date=format:%c` to show the date in your system locale's
|
|
preferred format. See the `strftime` manual for a complete list of
|
|
format placeholders. When using `-local`, the correct syntax is
|
|
`--date=format-local:...`.
|
|
|
|
`--date=default` is the default format, and is based on ctime(3)
|
|
output. It shows a single line with three-letter day of the week,
|
|
three-letter month, day-of-month, hour-minute-seconds in "HH:MM:SS"
|
|
format, followed by 4-digit year, plus timezone information, unless
|
|
the local time zone is used, e.g. `Thu Jan 1 00:00:00 1970 +0000`.
|
|
--
|
|
|
|
ifdef::git-rev-list[]
|
|
--header::
|
|
Print the contents of the commit in raw-format; each record is
|
|
separated with a NUL character.
|
|
|
|
--no-commit-header::
|
|
Suppress the header line containing "commit" and the object ID printed before
|
|
the specified format. This has no effect on the built-in formats; only custom
|
|
formats are affected.
|
|
|
|
--commit-header::
|
|
Overrides a previous `--no-commit-header`.
|
|
endif::git-rev-list[]
|
|
|
|
--parents::
|
|
Print also the parents of the commit (in the form "commit parent...").
|
|
Also enables parent rewriting, see 'History Simplification' above.
|
|
|
|
--children::
|
|
Print also the children of the commit (in the form "commit child...").
|
|
Also enables parent rewriting, see 'History Simplification' above.
|
|
|
|
ifdef::git-rev-list[]
|
|
--timestamp::
|
|
Print the raw commit timestamp.
|
|
endif::git-rev-list[]
|
|
|
|
--left-right::
|
|
Mark which side of a symmetric difference a commit is reachable from.
|
|
Commits from the left side are prefixed with `<` and those from
|
|
the right with `>`. If combined with `--boundary`, those
|
|
commits are prefixed with `-`.
|
|
+
|
|
For example, if you have this topology:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
y---b---b branch B
|
|
/ \ /
|
|
/ .
|
|
/ / \
|
|
o---x---a---a branch A
|
|
-----------------------------------------------------------------------
|
|
+
|
|
you would get an output like this:
|
|
+
|
|
-----------------------------------------------------------------------
|
|
$ git rev-list --left-right --boundary --pretty=oneline A...B
|
|
|
|
>bbbbbbb... 3rd on b
|
|
>bbbbbbb... 2nd on b
|
|
<aaaaaaa... 3rd on a
|
|
<aaaaaaa... 2nd on a
|
|
-yyyyyyy... 1st on b
|
|
-xxxxxxx... 1st on a
|
|
-----------------------------------------------------------------------
|
|
|
|
--graph::
|
|
Draw a text-based graphical representation of the commit history
|
|
on the left hand side of the output. This may cause extra lines
|
|
to be printed in between commits, in order for the graph history
|
|
to be drawn properly.
|
|
Cannot be combined with `--no-walk`.
|
|
+
|
|
This enables parent rewriting, see 'History Simplification' above.
|
|
+
|
|
This implies the `--topo-order` option by default, but the
|
|
`--date-order` option may also be specified.
|
|
|
|
--show-linear-break[=<barrier>]::
|
|
When --graph is not used, all history branches are flattened
|
|
which can make it hard to see that the two consecutive commits
|
|
do not belong to a linear branch. This option puts a barrier
|
|
in between them in that case. If `<barrier>` is specified, it
|
|
is the string that will be shown instead of the default one.
|
|
|
|
ifdef::git-rev-list[]
|
|
--count::
|
|
Print a number stating how many commits would have been
|
|
listed, and suppress all other output. When used together
|
|
with `--left-right`, instead print the counts for left and
|
|
right commits, separated by a tab. When used together with
|
|
`--cherry-mark`, omit patch equivalent commits from these
|
|
counts and print the count for equivalent commits separated
|
|
by a tab.
|
|
endif::git-rev-list[]
|
|
endif::git-shortlog[]
|