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This is a rewrite of much of Bo's work, mainly in an effort to split it into smaller, easier to understand routines. The algorithm is built around the struct range_set, which encodes a series of line ranges as intervals [a,b). This is used in two contexts: * A set of lines we are tracking (which will change as we dig through history). * To encode diffs, as pairs of ranges. The main routine is range_set_map_across_diff(). It processes the diff between a commit C and some parent P. It determines which diff hunks are relevant to the ranges tracked in C, and computes the new ranges for P. The algorithm is then simply to process history in topological order from newest to oldest, computing ranges and (partial) diffs. At branch points, we need to merge the ranges we are watching. We will find that many commits do not affect the chosen ranges, and mark them TREESAME (in addition to those already filtered by pathspec limiting). Another pass of history simplification then gets rid of such commits. This is wired as an extra filtering pass in the log machinery. This currently only reduces code duplication, but should allow for other simplifications and options to be used. Finally, we hook a diff printer into the output chain. Ideally we would wire directly into the diff logic, to optionally use features like word diff. However, that will require some major reworking of the diff chain, so we completely replace the output with our own diff for now. As this was a GSoC project, and has quite some history by now, many people have helped. In no particular order, thanks go to Jakub Narebski <jnareb@gmail.com> Jens Lehmann <Jens.Lehmann@web.de> Jonathan Nieder <jrnieder@gmail.com> Junio C Hamano <gitster@pobox.com> Ramsay Jones <ramsay@ramsay1.demon.co.uk> Will Palmer <wmpalmer@gmail.com> Apologies to everyone I forgot. Signed-off-by: Bo Yang <struggleyb.nku@gmail.com> Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
217 lines
6.2 KiB
Plaintext
217 lines
6.2 KiB
Plaintext
git-log(1)
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==========
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NAME
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----
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git-log - Show commit logs
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SYNOPSIS
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--------
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[verse]
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'git log' [<options>] [<since>..<until>] [[\--] <path>...]
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DESCRIPTION
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-----------
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Shows the commit logs.
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The command takes options applicable to the 'git rev-list'
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command to control what is shown and how, and options applicable to
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the 'git diff-*' commands to control how the changes
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each commit introduces are shown.
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OPTIONS
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-------
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<since>..<until>::
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Show only commits between the named two commits. When
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either <since> or <until> is omitted, it defaults to
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`HEAD`, i.e. the tip of the current branch.
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For a more complete list of ways to spell <since>
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and <until>, see linkgit:gitrevisions[7].
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--follow::
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Continue listing the history of a file beyond renames
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(works only for a single file).
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--no-decorate::
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--decorate[=short|full|no]::
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Print out the ref names of any commits that are shown. If 'short' is
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specified, the ref name prefixes 'refs/heads/', 'refs/tags/' and
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'refs/remotes/' will not be printed. If 'full' is specified, the
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full ref name (including prefix) will be printed. The default option
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is 'short'.
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--source::
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Print out the ref name given on the command line by which each
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commit was reached.
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--use-mailmap::
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Use mailmap file to map author and committer names and email
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to canonical real names and email addresses. See
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linkgit:git-shortlog[1].
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--full-diff::
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Without this flag, "git log -p <path>..." shows commits that
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touch the specified paths, and diffs about the same specified
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paths. With this, the full diff is shown for commits that touch
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the specified paths; this means that "<path>..." limits only
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commits, and doesn't limit diff for those commits.
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+
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Note that this affects all diff-based output types, e.g. those
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produced by --stat etc.
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--log-size::
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Before the log message print out its size in bytes. Intended
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mainly for porcelain tools consumption. If Git is unable to
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produce a valid value size is set to zero.
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Note that only message is considered, if also a diff is shown
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its size is not included.
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-L <start>,<end>:<file>::
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Trace the evolution of the line range given by "<start>,<end>"
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within the <file>. You may not give any pathspec limiters.
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This is currently limited to a walk starting from a single
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revision, i.e., you may only give zero or one positive
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revision arguments.
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<start> and <end> can take one of these forms:
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include::line-range-format.txt[]
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You can specify this option more than once.
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--full-line-diff::
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Always print the interesting range even if the current commit
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does not change any line of the range.
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[\--] <path>...::
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Show only commits that are enough to explain how the files
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that match the specified paths came to be. See "History
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Simplification" below for details and other simplification
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modes.
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+
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To prevent confusion with options and branch names, paths may need to
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be prefixed with "\-- " to separate them from options or refnames.
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include::rev-list-options.txt[]
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include::pretty-formats.txt[]
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Common diff options
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-------------------
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:git-log: 1
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include::diff-options.txt[]
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include::diff-generate-patch.txt[]
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Examples
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--------
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`git log --no-merges`::
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Show the whole commit history, but skip any merges
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`git log v2.6.12.. include/scsi drivers/scsi`::
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Show all commits since version 'v2.6.12' that changed any file
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in the include/scsi or drivers/scsi subdirectories
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`git log --since="2 weeks ago" -- gitk`::
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Show the changes during the last two weeks to the file 'gitk'.
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The "--" is necessary to avoid confusion with the *branch* named
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'gitk'
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`git log --name-status release..test`::
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Show the commits that are in the "test" branch but not yet
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in the "release" branch, along with the list of paths
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each commit modifies.
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`git log --follow builtin-rev-list.c`::
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Shows the commits that changed builtin-rev-list.c, including
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those commits that occurred before the file was given its
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present name.
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`git log --branches --not --remotes=origin`::
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Shows all commits that are in any of local branches but not in
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any of remote-tracking branches for 'origin' (what you have that
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origin doesn't).
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`git log master --not --remotes=*/master`::
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Shows all commits that are in local master but not in any remote
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repository master branches.
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`git log -p -m --first-parent`::
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Shows the history including change diffs, but only from the
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"main branch" perspective, skipping commits that come from merged
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branches, and showing full diffs of changes introduced by the merges.
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This makes sense only when following a strict policy of merging all
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topic branches when staying on a single integration branch.
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git log -L '/int main/',/^}/:main.c::
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Shows how the function `main()` in the file 'main.c' evolved
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over time.
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`git log -3`::
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Limits the number of commits to show to 3.
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Discussion
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----------
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include::i18n.txt[]
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Configuration
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-------------
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See linkgit:git-config[1] for core variables and linkgit:git-diff[1]
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for settings related to diff generation.
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format.pretty::
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Default for the `--format` option. (See "PRETTY FORMATS" above.)
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Defaults to "medium".
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i18n.logOutputEncoding::
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Encoding to use when displaying logs. (See "Discussion", above.)
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Defaults to the value of `i18n.commitEncoding` if set, UTF-8
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otherwise.
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log.date::
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Default format for human-readable dates. (Compare the
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`--date` option.) Defaults to "default", which means to write
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dates like `Sat May 8 19:35:34 2010 -0500`.
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log.showroot::
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If `false`, 'git log' and related commands will not treat the
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initial commit as a big creation event. Any root commits in
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`git log -p` output would be shown without a diff attached.
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The default is `true`.
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mailmap.*::
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See linkgit:git-shortlog[1].
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notes.displayRef::
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Which refs, in addition to the default set by `core.notesRef`
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or 'GIT_NOTES_REF', to read notes from when showing commit
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messages with the 'log' family of commands. See
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linkgit:git-notes[1].
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+
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May be an unabbreviated ref name or a glob and may be specified
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multiple times. A warning will be issued for refs that do not exist,
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but a glob that does not match any refs is silently ignored.
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This setting can be disabled by the `--no-notes` option,
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overridden by the 'GIT_NOTES_DISPLAY_REF' environment variable,
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and overridden by the `--notes=<ref>` option.
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GIT
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---
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Part of the linkgit:git[1] suite
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