1GIT-LOG(1)                        Git Manual                        GIT-LOG(1)
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NAME

6       git-log - Show commit logs
7

SYNOPSIS

9       git log [<options>] [<revision range>] [[--] <path>...]
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11

DESCRIPTION

13       Shows the commit logs.
14
15       The command takes options applicable to the git rev-list command to
16       control what is shown and how, and options applicable to the git diff-*
17       commands to control how the changes each commit introduces are shown.
18

OPTIONS

20       --follow
21           Continue listing the history of a file beyond renames (works only
22           for a single file).
23
24       --no-decorate, --decorate[=short|full|auto|no]
25           Print out the ref names of any commits that are shown. If short is
26           specified, the ref name prefixes refs/heads/, refs/tags/ and
27           refs/remotes/ will not be printed. If full is specified, the full
28           ref name (including prefix) will be printed. If auto is specified,
29           then if the output is going to a terminal, the ref names are shown
30           as if short were given, otherwise no ref names are shown. The
31           default option is short.
32
33       --decorate-refs=<pattern>, --decorate-refs-exclude=<pattern>
34           If no --decorate-refs is given, pretend as if all refs were
35           included. For each candidate, do not use it for decoration if it
36           matches any patterns given to --decorate-refs-exclude or if it
37           doesn’t match any of the patterns given to --decorate-refs.
38
39       --source
40           Print out the ref name given on the command line by which each
41           commit was reached.
42
43       --[no-]use-mailmap
44           Use mailmap file to map author and committer names and email
45           addresses to canonical real names and email addresses. See git-
46           shortlog(1).
47
48       --full-diff
49           Without this flag, git log -p <path>...  shows commits that touch
50           the specified paths, and diffs about the same specified paths. With
51           this, the full diff is shown for commits that touch the specified
52           paths; this means that "<path>..." limits only commits, and doesn’t
53           limit diff for those commits.
54
55           Note that this affects all diff-based output types, e.g. those
56           produced by --stat, etc.
57
58       --log-size
59           Include a line “log size <number>” in the output for each commit,
60           where <number> is the length of that commit’s message in bytes.
61           Intended to speed up tools that read log messages from git log
62           output by allowing them to allocate space in advance.
63
64       -L <start>,<end>:<file>, -L :<funcname>:<file>
65           Trace the evolution of the line range given by "<start>,<end>" (or
66           the function name regex <funcname>) within the <file>. You may not
67           give any pathspec limiters. This is currently limited to a walk
68           starting from a single revision, i.e., you may only give zero or
69           one positive revision arguments. You can specify this option more
70           than once.
71
72           <start> and <end> can take one of these forms:
73
74           ·   number
75
76               If <start> or <end> is a number, it specifies an absolute line
77               number (lines count from 1).
78
79           ·   /regex/
80
81               This form will use the first line matching the given POSIX
82               regex. If <start> is a regex, it will search from the end of
83               the previous -L range, if any, otherwise from the start of
84               file. If <start> is “^/regex/”, it will search from the start
85               of file. If <end> is a regex, it will search starting at the
86               line given by <start>.
87
88           ·   +offset or -offset
89
90               This is only valid for <end> and will specify a number of lines
91               before or after the line given by <start>.
92
93           If “:<funcname>” is given in place of <start> and <end>, it is a
94           regular expression that denotes the range from the first funcname
95           line that matches <funcname>, up to the next funcname line.
96           “:<funcname>” searches from the end of the previous -L range, if
97           any, otherwise from the start of file. “^:<funcname>” searches from
98           the start of file.
99
100       <revision range>
101           Show only commits in the specified revision range. When no
102           <revision range> is specified, it defaults to HEAD (i.e. the whole
103           history leading to the current commit).  origin..HEAD specifies all
104           the commits reachable from the current commit (i.e.  HEAD), but not
105           from origin. For a complete list of ways to spell <revision range>,
106           see the Specifying Ranges section of gitrevisions(7).
107
108       [--] <path>...
109           Show only commits that are enough to explain how the files that
110           match the specified paths came to be. See History Simplification
111           below for details and other simplification modes.
112
113           Paths may need to be prefixed with -- to separate them from options
114           or the revision range, when confusion arises.
115
116   Commit Limiting
117       Besides specifying a range of commits that should be listed using the
118       special notations explained in the description, additional commit
119       limiting may be applied.
120
121       Using more options generally further limits the output (e.g.
122       --since=<date1> limits to commits newer than <date1>, and using it with
123       --grep=<pattern> further limits to commits whose log message has a line
124       that matches <pattern>), unless otherwise noted.
125
126       Note that these are applied before commit ordering and formatting
127       options, such as --reverse.
128
129       -<number>, -n <number>, --max-count=<number>
130           Limit the number of commits to output.
131
132       --skip=<number>
133           Skip number commits before starting to show the commit output.
134
135       --since=<date>, --after=<date>
136           Show commits more recent than a specific date.
137
138       --until=<date>, --before=<date>
139           Show commits older than a specific date.
140
141       --author=<pattern>, --committer=<pattern>
142           Limit the commits output to ones with author/committer header lines
143           that match the specified pattern (regular expression). With more
144           than one --author=<pattern>, commits whose author matches any of
145           the given patterns are chosen (similarly for multiple
146           --committer=<pattern>).
147
148       --grep-reflog=<pattern>
149           Limit the commits output to ones with reflog entries that match the
150           specified pattern (regular expression). With more than one
151           --grep-reflog, commits whose reflog message matches any of the
152           given patterns are chosen. It is an error to use this option unless
153           --walk-reflogs is in use.
154
155       --grep=<pattern>
156           Limit the commits output to ones with log message that matches the
157           specified pattern (regular expression). With more than one
158           --grep=<pattern>, commits whose message matches any of the given
159           patterns are chosen (but see --all-match).
160
161           When --show-notes is in effect, the message from the notes is
162           matched as if it were part of the log message.
163
164       --all-match
165           Limit the commits output to ones that match all given --grep,
166           instead of ones that match at least one.
167
168       --invert-grep
169           Limit the commits output to ones with log message that do not match
170           the pattern specified with --grep=<pattern>.
171
172       -i, --regexp-ignore-case
173           Match the regular expression limiting patterns without regard to
174           letter case.
175
176       --basic-regexp
177           Consider the limiting patterns to be basic regular expressions;
178           this is the default.
179
180       -E, --extended-regexp
181           Consider the limiting patterns to be extended regular expressions
182           instead of the default basic regular expressions.
183
184       -F, --fixed-strings
185           Consider the limiting patterns to be fixed strings (don’t interpret
186           pattern as a regular expression).
187
188       -P, --perl-regexp
189           Consider the limiting patterns to be Perl-compatible regular
190           expressions.
191
192           Support for these types of regular expressions is an optional
193           compile-time dependency. If Git wasn’t compiled with support for
194           them providing this option will cause it to die.
195
196       --remove-empty
197           Stop when a given path disappears from the tree.
198
199       --merges
200           Print only merge commits. This is exactly the same as
201           --min-parents=2.
202
203       --no-merges
204           Do not print commits with more than one parent. This is exactly the
205           same as --max-parents=1.
206
207       --min-parents=<number>, --max-parents=<number>, --no-min-parents,
208       --no-max-parents
209           Show only commits which have at least (or at most) that many parent
210           commits. In particular, --max-parents=1 is the same as --no-merges,
211           --min-parents=2 is the same as --merges.  --max-parents=0 gives all
212           root commits and --min-parents=3 all octopus merges.
213
214           --no-min-parents and --no-max-parents reset these limits (to no
215           limit) again. Equivalent forms are --min-parents=0 (any commit has
216           0 or more parents) and --max-parents=-1 (negative numbers denote no
217           upper limit).
218
219       --first-parent
220           Follow only the first parent commit upon seeing a merge commit.
221           This option can give a better overview when viewing the evolution
222           of a particular topic branch, because merges into a topic branch
223           tend to be only about adjusting to updated upstream from time to
224           time, and this option allows you to ignore the individual commits
225           brought in to your history by such a merge. Cannot be combined with
226           --bisect.
227
228       --not
229           Reverses the meaning of the ^ prefix (or lack thereof) for all
230           following revision specifiers, up to the next --not.
231
232       --all
233           Pretend as if all the refs in refs/, along with HEAD, are listed on
234           the command line as <commit>.
235
236       --branches[=<pattern>]
237           Pretend as if all the refs in refs/heads are listed on the command
238           line as <commit>. If <pattern> is given, limit branches to ones
239           matching given shell glob. If pattern lacks ?, *, or [, /* at the
240           end is implied.
241
242       --tags[=<pattern>]
243           Pretend as if all the refs in refs/tags are listed on the command
244           line as <commit>. If <pattern> is given, limit tags to ones
245           matching given shell glob. If pattern lacks ?, *, or [, /* at the
246           end is implied.
247
248       --remotes[=<pattern>]
249           Pretend as if all the refs in refs/remotes are listed on the
250           command line as <commit>. If <pattern> is given, limit
251           remote-tracking branches to ones matching given shell glob. If
252           pattern lacks ?, *, or [, /* at the end is implied.
253
254       --glob=<glob-pattern>
255           Pretend as if all the refs matching shell glob <glob-pattern> are
256           listed on the command line as <commit>. Leading refs/, is
257           automatically prepended if missing. If pattern lacks ?, *, or [, /*
258           at the end is implied.
259
260       --exclude=<glob-pattern>
261           Do not include refs matching <glob-pattern> that the next --all,
262           --branches, --tags, --remotes, or --glob would otherwise consider.
263           Repetitions of this option accumulate exclusion patterns up to the
264           next --all, --branches, --tags, --remotes, or --glob option (other
265           options or arguments do not clear accumulated patterns).
266
267           The patterns given should not begin with refs/heads, refs/tags, or
268           refs/remotes when applied to --branches, --tags, or --remotes,
269           respectively, and they must begin with refs/ when applied to --glob
270           or --all. If a trailing /* is intended, it must be given
271           explicitly.
272
273       --reflog
274           Pretend as if all objects mentioned by reflogs are listed on the
275           command line as <commit>.
276
277       --alternate-refs
278           Pretend as if all objects mentioned as ref tips of alternate
279           repositories were listed on the command line. An alternate
280           repository is any repository whose object directory is specified in
281           objects/info/alternates. The set of included objects may be
282           modified by core.alternateRefsCommand, etc. See git-config(1).
283
284       --single-worktree
285           By default, all working trees will be examined by the following
286           options when there are more than one (see git-worktree(1)): --all,
287           --reflog and --indexed-objects. This option forces them to examine
288           the current working tree only.
289
290       --ignore-missing
291           Upon seeing an invalid object name in the input, pretend as if the
292           bad input was not given.
293
294       --bisect
295           Pretend as if the bad bisection ref refs/bisect/bad was listed and
296           as if it was followed by --not and the good bisection refs
297           refs/bisect/good-* on the command line. Cannot be combined with
298           --first-parent.
299
300       --stdin
301           In addition to the <commit> listed on the command line, read them
302           from the standard input. If a -- separator is seen, stop reading
303           commits and start reading paths to limit the result.
304
305       --cherry-mark
306           Like --cherry-pick (see below) but mark equivalent commits with =
307           rather than omitting them, and inequivalent ones with +.
308
309       --cherry-pick
310           Omit any commit that introduces the same change as another commit
311           on the “other side” when the set of commits are limited with
312           symmetric difference.
313
314           For example, if you have two branches, A and B, a usual way to list
315           all commits on only one side of them is with --left-right (see the
316           example below in the description of the --left-right option).
317           However, it shows the commits that were cherry-picked from the
318           other branch (for example, “3rd on b” may be cherry-picked from
319           branch A). With this option, such pairs of commits are excluded
320           from the output.
321
322       --left-only, --right-only
323           List only commits on the respective side of a symmetric difference,
324           i.e. only those which would be marked < resp.  > by --left-right.
325
326           For example, --cherry-pick --right-only A...B omits those commits
327           from B which are in A or are patch-equivalent to a commit in A. In
328           other words, this lists the + commits from git cherry A B. More
329           precisely, --cherry-pick --right-only --no-merges gives the exact
330           list.
331
332       --cherry
333           A synonym for --right-only --cherry-mark --no-merges; useful to
334           limit the output to the commits on our side and mark those that
335           have been applied to the other side of a forked history with git
336           log --cherry upstream...mybranch, similar to git cherry upstream
337           mybranch.
338
339       -g, --walk-reflogs
340           Instead of walking the commit ancestry chain, walk reflog entries
341           from the most recent one to older ones. When this option is used
342           you cannot specify commits to exclude (that is, ^commit,
343           commit1..commit2, and commit1...commit2 notations cannot be used).
344
345           With --pretty format other than oneline (for obvious reasons), this
346           causes the output to have two extra lines of information taken from
347           the reflog. The reflog designator in the output may be shown as
348           ref@{Nth} (where Nth is the reverse-chronological index in the
349           reflog) or as ref@{timestamp} (with the timestamp for that entry),
350           depending on a few rules:
351
352            1. If the starting point is specified as ref@{Nth}, show the index
353               format.
354
355            2. If the starting point was specified as ref@{now}, show the
356               timestamp format.
357
358            3. If neither was used, but --date was given on the command line,
359               show the timestamp in the format requested by --date.
360
361            4. Otherwise, show the index format.
362
363           Under --pretty=oneline, the commit message is prefixed with this
364           information on the same line. This option cannot be combined with
365           --reverse. See also git-reflog(1).
366
367       --merge
368           After a failed merge, show refs that touch files having a conflict
369           and don’t exist on all heads to merge.
370
371       --boundary
372           Output excluded boundary commits. Boundary commits are prefixed
373           with -.
374
375   History Simplification
376       Sometimes you are only interested in parts of the history, for example
377       the commits modifying a particular <path>. But there are two parts of
378       History Simplification, one part is selecting the commits and the other
379       is how to do it, as there are various strategies to simplify the
380       history.
381
382       The following options select the commits to be shown:
383
384       <paths>
385           Commits modifying the given <paths> are selected.
386
387       --simplify-by-decoration
388           Commits that are referred by some branch or tag are selected.
389
390       Note that extra commits can be shown to give a meaningful history.
391
392       The following options affect the way the simplification is performed:
393
394       Default mode
395           Simplifies the history to the simplest history explaining the final
396           state of the tree. Simplest because it prunes some side branches if
397           the end result is the same (i.e. merging branches with the same
398           content)
399
400       --full-history
401           Same as the default mode, but does not prune some history.
402
403       --dense
404           Only the selected commits are shown, plus some to have a meaningful
405           history.
406
407       --sparse
408           All commits in the simplified history are shown.
409
410       --simplify-merges
411           Additional option to --full-history to remove some needless merges
412           from the resulting history, as there are no selected commits
413           contributing to this merge.
414
415       --ancestry-path
416           When given a range of commits to display (e.g.  commit1..commit2 or
417           commit2 ^commit1), only display commits that exist directly on the
418           ancestry chain between the commit1 and commit2, i.e. commits that
419           are both descendants of commit1, and ancestors of commit2.
420
421       A more detailed explanation follows.
422
423       Suppose you specified foo as the <paths>. We shall call commits that
424       modify foo !TREESAME, and the rest TREESAME. (In a diff filtered for
425       foo, they look different and equal, respectively.)
426
427       In the following, we will always refer to the same example history to
428       illustrate the differences between simplification settings. We assume
429       that you are filtering for a file foo in this commit graph:
430
431                     .-A---M---N---O---P---Q
432                    /     /   /   /   /   /
433                   I     B   C   D   E   Y
434                    \   /   /   /   /   /
435                     `-------------'   X
436
437
438       The horizontal line of history A---Q is taken to be the first parent of
439       each merge. The commits are:
440
441       ·   I is the initial commit, in which foo exists with contents “asdf”,
442           and a file quux exists with contents “quux”. Initial commits are
443           compared to an empty tree, so I is !TREESAME.
444
445       ·   In A, foo contains just “foo”.
446
447       ·   B contains the same change as A. Its merge M is trivial and hence
448           TREESAME to all parents.
449
450       ·   C does not change foo, but its merge N changes it to “foobar”, so
451           it is not TREESAME to any parent.
452
453       ·   D sets foo to “baz”. Its merge O combines the strings from N and D
454           to “foobarbaz”; i.e., it is not TREESAME to any parent.
455
456       ·   E changes quux to “xyzzy”, and its merge P combines the strings to
457           “quux xyzzy”.  P is TREESAME to O, but not to E.
458
459       ·   X is an independent root commit that added a new file side, and Y
460           modified it.  Y is TREESAME to X. Its merge Q added side to P, and
461           Q is TREESAME to P, but not to Y.
462
463       rev-list walks backwards through history, including or excluding
464       commits based on whether --full-history and/or parent rewriting (via
465       --parents or --children) are used. The following settings are
466       available.
467
468       Default mode
469           Commits are included if they are not TREESAME to any parent (though
470           this can be changed, see --sparse below). If the commit was a
471           merge, and it was TREESAME to one parent, follow only that parent.
472           (Even if there are several TREESAME parents, follow only one of
473           them.) Otherwise, follow all parents.
474
475           This results in:
476
477                         .-A---N---O
478                        /     /   /
479                       I---------D
480
481           Note how the rule to only follow the TREESAME parent, if one is
482           available, removed B from consideration entirely.  C was considered
483           via N, but is TREESAME. Root commits are compared to an empty tree,
484           so I is !TREESAME.
485
486           Parent/child relations are only visible with --parents, but that
487           does not affect the commits selected in default mode, so we have
488           shown the parent lines.
489
490       --full-history without parent rewriting
491           This mode differs from the default in one point: always follow all
492           parents of a merge, even if it is TREESAME to one of them. Even if
493           more than one side of the merge has commits that are included, this
494           does not imply that the merge itself is! In the example, we get
495
496                       I  A  B  N  D  O  P  Q
497
498           M was excluded because it is TREESAME to both parents.  E, C and B
499           were all walked, but only B was !TREESAME, so the others do not
500           appear.
501
502           Note that without parent rewriting, it is not really possible to
503           talk about the parent/child relationships between the commits, so
504           we show them disconnected.
505
506       --full-history with parent rewriting
507           Ordinary commits are only included if they are !TREESAME (though
508           this can be changed, see --sparse below).
509
510           Merges are always included. However, their parent list is
511           rewritten: Along each parent, prune away commits that are not
512           included themselves. This results in
513
514                         .-A---M---N---O---P---Q
515                        /     /   /   /   /
516                       I     B   /   D   /
517                        \   /   /   /   /
518                         `-------------'
519
520           Compare to --full-history without rewriting above. Note that E was
521           pruned away because it is TREESAME, but the parent list of P was
522           rewritten to contain E's parent I. The same happened for C and N,
523           and X, Y and Q.
524
525       In addition to the above settings, you can change whether TREESAME
526       affects inclusion:
527
528       --dense
529           Commits that are walked are included if they are not TREESAME to
530           any parent.
531
532       --sparse
533           All commits that are walked are included.
534
535           Note that without --full-history, this still simplifies merges: if
536           one of the parents is TREESAME, we follow only that one, so the
537           other sides of the merge are never walked.
538
539       --simplify-merges
540           First, build a history graph in the same way that --full-history
541           with parent rewriting does (see above).
542
543           Then simplify each commit C to its replacement C' in the final
544           history according to the following rules:
545
546           ·   Set C' to C.
547
548           ·   Replace each parent P of C' with its simplification P'. In the
549               process, drop parents that are ancestors of other parents or
550               that are root commits TREESAME to an empty tree, and remove
551               duplicates, but take care to never drop all parents that we are
552               TREESAME to.
553
554           ·   If after this parent rewriting, C' is a root or merge commit
555               (has zero or >1 parents), a boundary commit, or !TREESAME, it
556               remains. Otherwise, it is replaced with its only parent.
557
558           The effect of this is best shown by way of comparing to
559           --full-history with parent rewriting. The example turns into:
560
561                         .-A---M---N---O
562                        /     /       /
563                       I     B       D
564                        \   /       /
565                         `---------'
566
567           Note the major differences in N, P, and Q over --full-history:
568
569           ·   N's parent list had I removed, because it is an ancestor of the
570               other parent M. Still, N remained because it is !TREESAME.
571
572           ·   P's parent list similarly had I removed.  P was then removed
573               completely, because it had one parent and is TREESAME.
574
575           ·   Q's parent list had Y simplified to X.  X was then removed,
576               because it was a TREESAME root.  Q was then removed completely,
577               because it had one parent and is TREESAME.
578
579       Finally, there is a fifth simplification mode available:
580
581       --ancestry-path
582           Limit the displayed commits to those directly on the ancestry chain
583           between the “from” and “to” commits in the given commit range. I.e.
584           only display commits that are ancestor of the “to” commit and
585           descendants of the “from” commit.
586
587           As an example use case, consider the following commit history:
588
589                           D---E-------F
590                          /     \       \
591                         B---C---G---H---I---J
592                        /                     \
593                       A-------K---------------L--M
594
595           A regular D..M computes the set of commits that are ancestors of M,
596           but excludes the ones that are ancestors of D. This is useful to
597           see what happened to the history leading to M since D, in the sense
598           that “what does M have that did not exist in D”. The result in this
599           example would be all the commits, except A and B (and D itself, of
600           course).
601
602           When we want to find out what commits in M are contaminated with
603           the bug introduced by D and need fixing, however, we might want to
604           view only the subset of D..M that are actually descendants of D,
605           i.e. excluding C and K. This is exactly what the --ancestry-path
606           option does. Applied to the D..M range, it results in:
607
608                               E-------F
609                                \       \
610                                 G---H---I---J
611                                              \
612                                               L--M
613
614
615       The --simplify-by-decoration option allows you to view only the big
616       picture of the topology of the history, by omitting commits that are
617       not referenced by tags. Commits are marked as !TREESAME (in other
618       words, kept after history simplification rules described above) if (1)
619       they are referenced by tags, or (2) they change the contents of the
620       paths given on the command line. All other commits are marked as
621       TREESAME (subject to be simplified away).
622
623   Commit Ordering
624       By default, the commits are shown in reverse chronological order.
625
626       --date-order
627           Show no parents before all of its children are shown, but otherwise
628           show commits in the commit timestamp order.
629
630       --author-date-order
631           Show no parents before all of its children are shown, but otherwise
632           show commits in the author timestamp order.
633
634       --topo-order
635           Show no parents before all of its children are shown, and avoid
636           showing commits on multiple lines of history intermixed.
637
638           For example, in a commit history like this:
639
640                   ---1----2----4----7
641                       \              \
642                        3----5----6----8---
643
644           where the numbers denote the order of commit timestamps, git
645           rev-list and friends with --date-order show the commits in the
646           timestamp order: 8 7 6 5 4 3 2 1.
647
648           With --topo-order, they would show 8 6 5 3 7 4 2 1 (or 8 7 4 2 6 5
649           3 1); some older commits are shown before newer ones in order to
650           avoid showing the commits from two parallel development track mixed
651           together.
652
653       --reverse
654           Output the commits chosen to be shown (see Commit Limiting section
655           above) in reverse order. Cannot be combined with --walk-reflogs.
656
657   Object Traversal
658       These options are mostly targeted for packing of Git repositories.
659
660       --no-walk[=(sorted|unsorted)]
661           Only show the given commits, but do not traverse their ancestors.
662           This has no effect if a range is specified. If the argument
663           unsorted is given, the commits are shown in the order they were
664           given on the command line. Otherwise (if sorted or no argument was
665           given), the commits are shown in reverse chronological order by
666           commit time. Cannot be combined with --graph.
667
668       --do-walk
669           Overrides a previous --no-walk.
670
671   Commit Formatting
672       --pretty[=<format>], --format=<format>
673           Pretty-print the contents of the commit logs in a given format,
674           where <format> can be one of oneline, short, medium, full, fuller,
675           email, raw, format:<string> and tformat:<string>. When <format> is
676           none of the above, and has %placeholder in it, it acts as if
677           --pretty=tformat:<format> were given.
678
679           See the "PRETTY FORMATS" section for some additional details for
680           each format. When =<format> part is omitted, it defaults to medium.
681
682           Note: you can specify the default pretty format in the repository
683           configuration (see git-config(1)).
684
685       --abbrev-commit
686           Instead of showing the full 40-byte hexadecimal commit object name,
687           show only a partial prefix. Non default number of digits can be
688           specified with "--abbrev=<n>" (which also modifies diff output, if
689           it is displayed).
690
691           This should make "--pretty=oneline" a whole lot more readable for
692           people using 80-column terminals.
693
694       --no-abbrev-commit
695           Show the full 40-byte hexadecimal commit object name. This negates
696           --abbrev-commit and those options which imply it such as
697           "--oneline". It also overrides the log.abbrevCommit variable.
698
699       --oneline
700           This is a shorthand for "--pretty=oneline --abbrev-commit" used
701           together.
702
703       --encoding=<encoding>
704           The commit objects record the encoding used for the log message in
705           their encoding header; this option can be used to tell the command
706           to re-code the commit log message in the encoding preferred by the
707           user. For non plumbing commands this defaults to UTF-8. Note that
708           if an object claims to be encoded in X and we are outputting in X,
709           we will output the object verbatim; this means that invalid
710           sequences in the original commit may be copied to the output.
711
712       --expand-tabs=<n>, --expand-tabs, --no-expand-tabs
713           Perform a tab expansion (replace each tab with enough spaces to
714           fill to the next display column that is multiple of <n>) in the log
715           message before showing it in the output.  --expand-tabs is a
716           short-hand for --expand-tabs=8, and --no-expand-tabs is a
717           short-hand for --expand-tabs=0, which disables tab expansion.
718
719           By default, tabs are expanded in pretty formats that indent the log
720           message by 4 spaces (i.e.  medium, which is the default, full, and
721           fuller).
722
723       --notes[=<treeish>]
724           Show the notes (see git-notes(1)) that annotate the commit, when
725           showing the commit log message. This is the default for git log,
726           git show and git whatchanged commands when there is no --pretty,
727           --format, or --oneline option given on the command line.
728
729           By default, the notes shown are from the notes refs listed in the
730           core.notesRef and notes.displayRef variables (or corresponding
731           environment overrides). See git-config(1) for more details.
732
733           With an optional <treeish> argument, use the treeish to find the
734           notes to display. The treeish can specify the full refname when it
735           begins with refs/notes/; when it begins with notes/, refs/ and
736           otherwise refs/notes/ is prefixed to form a full name of the ref.
737
738           Multiple --notes options can be combined to control which notes are
739           being displayed. Examples: "--notes=foo" will show only notes from
740           "refs/notes/foo"; "--notes=foo --notes" will show both notes from
741           "refs/notes/foo" and from the default notes ref(s).
742
743       --no-notes
744           Do not show notes. This negates the above --notes option, by
745           resetting the list of notes refs from which notes are shown.
746           Options are parsed in the order given on the command line, so e.g.
747           "--notes --notes=foo --no-notes --notes=bar" will only show notes
748           from "refs/notes/bar".
749
750       --show-notes[=<treeish>], --[no-]standard-notes
751           These options are deprecated. Use the above --notes/--no-notes
752           options instead.
753
754       --show-signature
755           Check the validity of a signed commit object by passing the
756           signature to gpg --verify and show the output.
757
758       --relative-date
759           Synonym for --date=relative.
760
761       --date=<format>
762           Only takes effect for dates shown in human-readable format, such as
763           when using --pretty.  log.date config variable sets a default value
764           for the log command’s --date option. By default, dates are shown in
765           the original time zone (either committer’s or author’s). If -local
766           is appended to the format (e.g., iso-local), the user’s local time
767           zone is used instead.
768
769           --date=relative shows dates relative to the current time, e.g. “2
770           hours ago”. The -local option has no effect for --date=relative.
771
772           --date=local is an alias for --date=default-local.
773
774           --date=iso (or --date=iso8601) shows timestamps in a ISO 8601-like
775           format. The differences to the strict ISO 8601 format are:
776
777           ·   a space instead of the T date/time delimiter
778
779           ·   a space between time and time zone
780
781           ·   no colon between hours and minutes of the time zone
782
783           --date=iso-strict (or --date=iso8601-strict) shows timestamps in
784           strict ISO 8601 format.
785
786           --date=rfc (or --date=rfc2822) shows timestamps in RFC 2822 format,
787           often found in email messages.
788
789           --date=short shows only the date, but not the time, in YYYY-MM-DD
790           format.
791
792           --date=raw shows the date as seconds since the epoch (1970-01-01
793           00:00:00 UTC), followed by a space, and then the timezone as an
794           offset from UTC (a + or - with four digits; the first two are
795           hours, and the second two are minutes). I.e., as if the timestamp
796           were formatted with strftime("%s %z")). Note that the -local option
797           does not affect the seconds-since-epoch value (which is always
798           measured in UTC), but does switch the accompanying timezone value.
799
800           --date=human shows the timezone if the timezone does not match the
801           current time-zone, and doesn’t print the whole date if that matches
802           (ie skip printing year for dates that are "this year", but also
803           skip the whole date itself if it’s in the last few days and we can
804           just say what weekday it was). For older dates the hour and minute
805           is also omitted.
806
807           --date=unix shows the date as a Unix epoch timestamp (seconds since
808           1970). As with --raw, this is always in UTC and therefore -local
809           has no effect.
810
811           --date=format:...  feeds the format ...  to your system strftime,
812           except for %z and %Z, which are handled internally. Use
813           --date=format:%c to show the date in your system locale’s preferred
814           format. See the strftime manual for a complete list of format
815           placeholders. When using -local, the correct syntax is
816           --date=format-local:....
817
818           --date=default is the default format, and is similar to
819           --date=rfc2822, with a few exceptions:
820
821           ·   there is no comma after the day-of-week
822
823           ·   the time zone is omitted when the local time zone is used
824
825       --parents
826           Print also the parents of the commit (in the form "commit
827           parent..."). Also enables parent rewriting, see History
828           Simplification above.
829
830       --children
831           Print also the children of the commit (in the form "commit
832           child..."). Also enables parent rewriting, see History
833           Simplification above.
834
835       --left-right
836           Mark which side of a symmetric difference a commit is reachable
837           from. Commits from the left side are prefixed with < and those from
838           the right with >. If combined with --boundary, those commits are
839           prefixed with -.
840
841           For example, if you have this topology:
842
843                            y---b---b  branch B
844                           / \ /
845                          /   .
846                         /   / \
847                        o---x---a---a  branch A
848
849           you would get an output like this:
850
851                       $ git rev-list --left-right --boundary --pretty=oneline A...B
852
853                       >bbbbbbb... 3rd on b
854                       >bbbbbbb... 2nd on b
855                       <aaaaaaa... 3rd on a
856                       <aaaaaaa... 2nd on a
857                       -yyyyyyy... 1st on b
858                       -xxxxxxx... 1st on a
859
860
861       --graph
862           Draw a text-based graphical representation of the commit history on
863           the left hand side of the output. This may cause extra lines to be
864           printed in between commits, in order for the graph history to be
865           drawn properly. Cannot be combined with --no-walk.
866
867           This enables parent rewriting, see History Simplification above.
868
869           This implies the --topo-order option by default, but the
870           --date-order option may also be specified.
871
872       --show-linear-break[=<barrier>]
873           When --graph is not used, all history branches are flattened which
874           can make it hard to see that the two consecutive commits do not
875           belong to a linear branch. This option puts a barrier in between
876           them in that case. If <barrier> is specified, it is the string that
877           will be shown instead of the default one.
878
879   Diff Formatting
880       Listed below are options that control the formatting of diff output.
881       Some of them are specific to git-rev-list(1), however other diff
882       options may be given. See git-diff-files(1) for more options.
883
884       -c
885           With this option, diff output for a merge commit shows the
886           differences from each of the parents to the merge result
887           simultaneously instead of showing pairwise diff between a parent
888           and the result one at a time. Furthermore, it lists only files
889           which were modified from all parents.
890
891       --cc
892           This flag implies the -c option and further compresses the patch
893           output by omitting uninteresting hunks whose contents in the
894           parents have only two variants and the merge result picks one of
895           them without modification.
896
897       --combined-all-paths
898           This flag causes combined diffs (used for merge commits) to list
899           the name of the file from all parents. It thus only has effect when
900           -c or --cc are specified, and is likely only useful if filename
901           changes are detected (i.e. when either rename or copy detection
902           have been requested).
903
904       -m
905           This flag makes the merge commits show the full diff like regular
906           commits; for each merge parent, a separate log entry and diff is
907           generated. An exception is that only diff against the first parent
908           is shown when --first-parent option is given; in that case, the
909           output represents the changes the merge brought into the
910           then-current branch.
911
912       -r
913           Show recursive diffs.
914
915       -t
916           Show the tree objects in the diff output. This implies -r.
917

PRETTY FORMATS

919       If the commit is a merge, and if the pretty-format is not oneline,
920       email or raw, an additional line is inserted before the Author: line.
921       This line begins with "Merge: " and the sha1s of ancestral commits are
922       printed, separated by spaces. Note that the listed commits may not
923       necessarily be the list of the direct parent commits if you have
924       limited your view of history: for example, if you are only interested
925       in changes related to a certain directory or file.
926
927       There are several built-in formats, and you can define additional
928       formats by setting a pretty.<name> config option to either another
929       format name, or a format: string, as described below (see git-
930       config(1)). Here are the details of the built-in formats:
931
932       ·   oneline
933
934               <sha1> <title line>
935
936           This is designed to be as compact as possible.
937
938       ·   short
939
940               commit <sha1>
941               Author: <author>
942
943               <title line>
944
945       ·   medium
946
947               commit <sha1>
948               Author: <author>
949               Date:   <author date>
950
951               <title line>
952
953               <full commit message>
954
955       ·   full
956
957               commit <sha1>
958               Author: <author>
959               Commit: <committer>
960
961               <title line>
962
963               <full commit message>
964
965       ·   fuller
966
967               commit <sha1>
968               Author:     <author>
969               AuthorDate: <author date>
970               Commit:     <committer>
971               CommitDate: <committer date>
972
973               <title line>
974
975               <full commit message>
976
977       ·   email
978
979               From <sha1> <date>
980               From: <author>
981               Date: <author date>
982               Subject: [PATCH] <title line>
983
984               <full commit message>
985
986       ·   raw
987
988           The raw format shows the entire commit exactly as stored in the
989           commit object. Notably, the SHA-1s are displayed in full,
990           regardless of whether --abbrev or --no-abbrev are used, and parents
991           information show the true parent commits, without taking grafts or
992           history simplification into account. Note that this format affects
993           the way commits are displayed, but not the way the diff is shown
994           e.g. with git log --raw. To get full object names in a raw diff
995           format, use --no-abbrev.
996
997       ·   format:<string>
998
999           The format:<string> format allows you to specify which information
1000           you want to show. It works a little bit like printf format, with
1001           the notable exception that you get a newline with %n instead of \n.
1002
1003           E.g, format:"The author of %h was %an, %ar%nThe title was >>%s<<%n"
1004           would show something like this:
1005
1006               The author of fe6e0ee was Junio C Hamano, 23 hours ago
1007               The title was >>t4119: test autocomputing -p<n> for traditional diff input.<<
1008
1009           The placeholders are:
1010
1011           ·   Placeholders that expand to a single literal character:
1012
1013               %n
1014                   newline
1015
1016               %%
1017                   a raw %
1018
1019               %x00
1020                   print a byte from a hex code
1021
1022           ·   Placeholders that affect formatting of later placeholders:
1023
1024               %Cred
1025                   switch color to red
1026
1027               %Cgreen
1028                   switch color to green
1029
1030               %Cblue
1031                   switch color to blue
1032
1033               %Creset
1034                   reset color
1035
1036               %C(...)
1037                   color specification, as described under Values in the
1038                   "CONFIGURATION FILE" section of git-config(1). By default,
1039                   colors are shown only when enabled for log output (by
1040                   color.diff, color.ui, or --color, and respecting the auto
1041                   settings of the former if we are going to a terminal).
1042                   %C(auto,...)  is accepted as a historical synonym for the
1043                   default (e.g., %C(auto,red)). Specifying %C(always,...)
1044                   will show the colors even when color is not otherwise
1045                   enabled (though consider just using --color=always to
1046                   enable color for the whole output, including this format
1047                   and anything else git might color).  auto alone (i.e.
1048                   %C(auto)) will turn on auto coloring on the next
1049                   placeholders until the color is switched again.
1050
1051               %m
1052                   left (<), right (>) or boundary (-) mark
1053
1054               %w([<w>[,<i1>[,<i2>]]])
1055                   switch line wrapping, like the -w option of git-
1056                   shortlog(1).
1057
1058               %<(<N>[,trunc|ltrunc|mtrunc])
1059                   make the next placeholder take at least N columns, padding
1060                   spaces on the right if necessary. Optionally truncate at
1061                   the beginning (ltrunc), the middle (mtrunc) or the end
1062                   (trunc) if the output is longer than N columns. Note that
1063                   truncating only works correctly with N >= 2.
1064
1065               %<|(<N>)
1066                   make the next placeholder take at least until Nth columns,
1067                   padding spaces on the right if necessary
1068
1069               %>(<N>), %>|(<N>)
1070                   similar to %<(<N>), %<|(<N>) respectively, but padding
1071                   spaces on the left
1072
1073               %>>(<N>), %>>|(<N>)
1074                   similar to %>(<N>), %>|(<N>) respectively, except that if
1075                   the next placeholder takes more spaces than given and there
1076                   are spaces on its left, use those spaces
1077
1078               %><(<N>), %><|(<N>)
1079                   similar to %<(<N>), %<|(<N>) respectively, but padding both
1080                   sides (i.e. the text is centered)
1081
1082           ·   Placeholders that expand to information extracted from the
1083               commit:
1084
1085               %H
1086                   commit hash
1087
1088               %h
1089                   abbreviated commit hash
1090
1091               %T
1092                   tree hash
1093
1094               %t
1095                   abbreviated tree hash
1096
1097               %P
1098                   parent hashes
1099
1100               %p
1101                   abbreviated parent hashes
1102
1103               %an
1104                   author name
1105
1106               %aN
1107                   author name (respecting .mailmap, see git-shortlog(1) or
1108                   git-blame(1))
1109
1110               %ae
1111                   author email
1112
1113               %aE
1114                   author email (respecting .mailmap, see git-shortlog(1) or
1115                   git-blame(1))
1116
1117               %ad
1118                   author date (format respects --date= option)
1119
1120               %aD
1121                   author date, RFC2822 style
1122
1123               %ar
1124                   author date, relative
1125
1126               %at
1127                   author date, UNIX timestamp
1128
1129               %ai
1130                   author date, ISO 8601-like format
1131
1132               %aI
1133                   author date, strict ISO 8601 format
1134
1135               %cn
1136                   committer name
1137
1138               %cN
1139                   committer name (respecting .mailmap, see git-shortlog(1) or
1140                   git-blame(1))
1141
1142               %ce
1143                   committer email
1144
1145               %cE
1146                   committer email (respecting .mailmap, see git-shortlog(1)
1147                   or git-blame(1))
1148
1149               %cd
1150                   committer date (format respects --date= option)
1151
1152               %cD
1153                   committer date, RFC2822 style
1154
1155               %cr
1156                   committer date, relative
1157
1158               %ct
1159                   committer date, UNIX timestamp
1160
1161               %ci
1162                   committer date, ISO 8601-like format
1163
1164               %cI
1165                   committer date, strict ISO 8601 format
1166
1167               %d
1168                   ref names, like the --decorate option of git-log(1)
1169
1170               %D
1171                   ref names without the " (", ")" wrapping.
1172
1173               %S
1174                   ref name given on the command line by which the commit was
1175                   reached (like git log --source), only works with git log
1176
1177               %e
1178                   encoding
1179
1180               %s
1181                   subject
1182
1183               %f
1184                   sanitized subject line, suitable for a filename
1185
1186               %b
1187                   body
1188
1189               %B
1190                   raw body (unwrapped subject and body)
1191
1192               %N
1193                   commit notes
1194
1195               %GG
1196                   raw verification message from GPG for a signed commit
1197
1198               %G?
1199                   show "G" for a good (valid) signature, "B" for a bad
1200                   signature, "U" for a good signature with unknown validity,
1201                   "X" for a good signature that has expired, "Y" for a good
1202                   signature made by an expired key, "R" for a good signature
1203                   made by a revoked key, "E" if the signature cannot be
1204                   checked (e.g. missing key) and "N" for no signature
1205
1206               %GS
1207                   show the name of the signer for a signed commit
1208
1209               %GK
1210                   show the key used to sign a signed commit
1211
1212               %GF
1213                   show the fingerprint of the key used to sign a signed
1214                   commit
1215
1216               %GP
1217                   show the fingerprint of the primary key whose subkey was
1218                   used to sign a signed commit
1219
1220               %gD
1221                   reflog selector, e.g., refs/stash@{1} or refs/stash@{2
1222                   minutes ago}; the format follows the rules described for
1223                   the -g option. The portion before the @ is the refname as
1224                   given on the command line (so git log -g refs/heads/master
1225                   would yield refs/heads/master@{0}).
1226
1227               %gd
1228                   shortened reflog selector; same as %gD, but the refname
1229                   portion is shortened for human readability (so
1230                   refs/heads/master becomes just master).
1231
1232               %gn
1233                   reflog identity name
1234
1235               %gN
1236                   reflog identity name (respecting .mailmap, see git-
1237                   shortlog(1) or git-blame(1))
1238
1239               %ge
1240                   reflog identity email
1241
1242               %gE
1243                   reflog identity email (respecting .mailmap, see git-
1244                   shortlog(1) or git-blame(1))
1245
1246               %gs
1247                   reflog subject
1248
1249               %(trailers[:options])
1250                   display the trailers of the body as interpreted by git-
1251                   interpret-trailers(1). The trailers string may be followed
1252                   by a colon and zero or more comma-separated options:
1253
1254                   ·   key=<K>: only show trailers with specified key.
1255                       Matching is done case-insensitively and trailing colon
1256                       is optional. If option is given multiple times trailer
1257                       lines matching any of the keys are shown. This option
1258                       automatically enables the only option so that
1259                       non-trailer lines in the trailer block are hidden. If
1260                       that is not desired it can be disabled with only=false.
1261                       E.g., %(trailers:key=Reviewed-by) shows trailer lines
1262                       with key Reviewed-by.
1263
1264                   ·   only[=val]: select whether non-trailer lines from the
1265                       trailer block should be included. The only keyword may
1266                       optionally be followed by an equal sign and one of
1267                       true, on, yes to omit or false, off, no to show the
1268                       non-trailer lines. If option is given without value it
1269                       is enabled. If given multiple times the last value is
1270                       used.
1271
1272                   ·   separator=<SEP>: specify a separator inserted between
1273                       trailer lines. When this option is not given each
1274                       trailer line is terminated with a line feed character.
1275                       The string SEP may contain the literal formatting codes
1276                       described above. To use comma as separator one must use
1277                       %x2C as it would otherwise be parsed as next option. If
1278                       separator option is given multiple times only the last
1279                       one is used. E.g., %(trailers:key=Ticket,separator=%x2C
1280                       ) shows all trailer lines whose key is "Ticket"
1281                       separated by a comma and a space.
1282
1283                   ·   unfold[=val]: make it behave as if interpret-trailer’s
1284                       --unfold option was given. In same way as to for only
1285                       it can be followed by an equal sign and explicit value.
1286                       E.g., %(trailers:only,unfold=true) unfolds and shows
1287                       all trailer lines.
1288
1289                   ·   valueonly[=val]: skip over the key part of the trailer
1290                       line and only show the value part. Also this optionally
1291                       allows explicit value.
1292
1293           Note
1294           Some placeholders may depend on other options given to the revision
1295           traversal engine. For example, the %g* reflog options will insert
1296           an empty string unless we are traversing reflog entries (e.g., by
1297           git log -g). The %d and %D placeholders will use the "short"
1298           decoration format if --decorate was not already provided on the
1299           command line.
1300
1301       If you add a + (plus sign) after % of a placeholder, a line-feed is
1302       inserted immediately before the expansion if and only if the
1303       placeholder expands to a non-empty string.
1304
1305       If you add a - (minus sign) after % of a placeholder, all consecutive
1306       line-feeds immediately preceding the expansion are deleted if and only
1307       if the placeholder expands to an empty string.
1308
1309       If you add a ` ` (space) after % of a placeholder, a space is inserted
1310       immediately before the expansion if and only if the placeholder expands
1311       to a non-empty string.
1312
1313       ·   tformat:
1314
1315           The tformat: format works exactly like format:, except that it
1316           provides "terminator" semantics instead of "separator" semantics.
1317           In other words, each commit has the message terminator character
1318           (usually a newline) appended, rather than a separator placed
1319           between entries. This means that the final entry of a single-line
1320           format will be properly terminated with a new line, just as the
1321           "oneline" format does. For example:
1322
1323               $ git log -2 --pretty=format:%h 4da45bef \
1324                 | perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
1325               4da45be
1326               7134973 -- NO NEWLINE
1327
1328               $ git log -2 --pretty=tformat:%h 4da45bef \
1329                 | perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
1330               4da45be
1331               7134973
1332
1333           In addition, any unrecognized string that has a % in it is
1334           interpreted as if it has tformat: in front of it. For example,
1335           these two are equivalent:
1336
1337               $ git log -2 --pretty=tformat:%h 4da45bef
1338               $ git log -2 --pretty=%h 4da45bef
1339
1340

COMMON DIFF OPTIONS

1342       -p, -u, --patch
1343           Generate patch (see section on generating patches).
1344
1345       -s, --no-patch
1346           Suppress diff output. Useful for commands like git show that show
1347           the patch by default, or to cancel the effect of --patch.
1348
1349       -U<n>, --unified=<n>
1350           Generate diffs with <n> lines of context instead of the usual
1351           three. Implies --patch. Implies -p.
1352
1353       --output=<file>
1354           Output to a specific file instead of stdout.
1355
1356       --output-indicator-new=<char>, --output-indicator-old=<char>,
1357       --output-indicator-context=<char>
1358           Specify the character used to indicate new, old or context lines in
1359           the generated patch. Normally they are +, - and ' ' respectively.
1360
1361       --raw
1362           For each commit, show a summary of changes using the raw diff
1363           format. See the "RAW OUTPUT FORMAT" section of git-diff(1). This is
1364           different from showing the log itself in raw format, which you can
1365           achieve with --format=raw.
1366
1367       --patch-with-raw
1368           Synonym for -p --raw.
1369
1370       --indent-heuristic
1371           Enable the heuristic that shifts diff hunk boundaries to make
1372           patches easier to read. This is the default.
1373
1374       --no-indent-heuristic
1375           Disable the indent heuristic.
1376
1377       --minimal
1378           Spend extra time to make sure the smallest possible diff is
1379           produced.
1380
1381       --patience
1382           Generate a diff using the "patience diff" algorithm.
1383
1384       --histogram
1385           Generate a diff using the "histogram diff" algorithm.
1386
1387       --anchored=<text>
1388           Generate a diff using the "anchored diff" algorithm.
1389
1390           This option may be specified more than once.
1391
1392           If a line exists in both the source and destination, exists only
1393           once, and starts with this text, this algorithm attempts to prevent
1394           it from appearing as a deletion or addition in the output. It uses
1395           the "patience diff" algorithm internally.
1396
1397       --diff-algorithm={patience|minimal|histogram|myers}
1398           Choose a diff algorithm. The variants are as follows:
1399
1400           default, myers
1401               The basic greedy diff algorithm. Currently, this is the
1402               default.
1403
1404           minimal
1405               Spend extra time to make sure the smallest possible diff is
1406               produced.
1407
1408           patience
1409               Use "patience diff" algorithm when generating patches.
1410
1411           histogram
1412               This algorithm extends the patience algorithm to "support
1413               low-occurrence common elements".
1414
1415           For instance, if you configured the diff.algorithm variable to a
1416           non-default value and want to use the default one, then you have to
1417           use --diff-algorithm=default option.
1418
1419       --stat[=<width>[,<name-width>[,<count>]]]
1420           Generate a diffstat. By default, as much space as necessary will be
1421           used for the filename part, and the rest for the graph part.
1422           Maximum width defaults to terminal width, or 80 columns if not
1423           connected to a terminal, and can be overridden by <width>. The
1424           width of the filename part can be limited by giving another width
1425           <name-width> after a comma. The width of the graph part can be
1426           limited by using --stat-graph-width=<width> (affects all commands
1427           generating a stat graph) or by setting diff.statGraphWidth=<width>
1428           (does not affect git format-patch). By giving a third parameter
1429           <count>, you can limit the output to the first <count> lines,
1430           followed by ...  if there are more.
1431
1432           These parameters can also be set individually with
1433           --stat-width=<width>, --stat-name-width=<name-width> and
1434           --stat-count=<count>.
1435
1436       --compact-summary
1437           Output a condensed summary of extended header information such as
1438           file creations or deletions ("new" or "gone", optionally "+l" if
1439           it’s a symlink) and mode changes ("+x" or "-x" for adding or
1440           removing executable bit respectively) in diffstat. The information
1441           is put between the filename part and the graph part. Implies
1442           --stat.
1443
1444       --numstat
1445           Similar to --stat, but shows number of added and deleted lines in
1446           decimal notation and pathname without abbreviation, to make it more
1447           machine friendly. For binary files, outputs two - instead of saying
1448           0 0.
1449
1450       --shortstat
1451           Output only the last line of the --stat format containing total
1452           number of modified files, as well as number of added and deleted
1453           lines.
1454
1455       -X[<param1,param2,...>], --dirstat[=<param1,param2,...>]
1456           Output the distribution of relative amount of changes for each
1457           sub-directory. The behavior of --dirstat can be customized by
1458           passing it a comma separated list of parameters. The defaults are
1459           controlled by the diff.dirstat configuration variable (see git-
1460           config(1)). The following parameters are available:
1461
1462           changes
1463               Compute the dirstat numbers by counting the lines that have
1464               been removed from the source, or added to the destination. This
1465               ignores the amount of pure code movements within a file. In
1466               other words, rearranging lines in a file is not counted as much
1467               as other changes. This is the default behavior when no
1468               parameter is given.
1469
1470           lines
1471               Compute the dirstat numbers by doing the regular line-based
1472               diff analysis, and summing the removed/added line counts. (For
1473               binary files, count 64-byte chunks instead, since binary files
1474               have no natural concept of lines). This is a more expensive
1475               --dirstat behavior than the changes behavior, but it does count
1476               rearranged lines within a file as much as other changes. The
1477               resulting output is consistent with what you get from the other
1478               --*stat options.
1479
1480           files
1481               Compute the dirstat numbers by counting the number of files
1482               changed. Each changed file counts equally in the dirstat
1483               analysis. This is the computationally cheapest --dirstat
1484               behavior, since it does not have to look at the file contents
1485               at all.
1486
1487           cumulative
1488               Count changes in a child directory for the parent directory as
1489               well. Note that when using cumulative, the sum of the
1490               percentages reported may exceed 100%. The default
1491               (non-cumulative) behavior can be specified with the
1492               noncumulative parameter.
1493
1494           <limit>
1495               An integer parameter specifies a cut-off percent (3% by
1496               default). Directories contributing less than this percentage of
1497               the changes are not shown in the output.
1498
1499           Example: The following will count changed files, while ignoring
1500           directories with less than 10% of the total amount of changed
1501           files, and accumulating child directory counts in the parent
1502           directories: --dirstat=files,10,cumulative.
1503
1504       --cumulative
1505           Synonym for --dirstat=cumulative
1506
1507       --dirstat-by-file[=<param1,param2>...]
1508           Synonym for --dirstat=files,param1,param2...
1509
1510       --summary
1511           Output a condensed summary of extended header information such as
1512           creations, renames and mode changes.
1513
1514       --patch-with-stat
1515           Synonym for -p --stat.
1516
1517       -z
1518           Separate the commits with NULs instead of with new newlines.
1519
1520           Also, when --raw or --numstat has been given, do not munge
1521           pathnames and use NULs as output field terminators.
1522
1523           Without this option, pathnames with "unusual" characters are quoted
1524           as explained for the configuration variable core.quotePath (see
1525           git-config(1)).
1526
1527       --name-only
1528           Show only names of changed files.
1529
1530       --name-status
1531           Show only names and status of changed files. See the description of
1532           the --diff-filter option on what the status letters mean.
1533
1534       --submodule[=<format>]
1535           Specify how differences in submodules are shown. When specifying
1536           --submodule=short the short format is used. This format just shows
1537           the names of the commits at the beginning and end of the range.
1538           When --submodule or --submodule=log is specified, the log format is
1539           used. This format lists the commits in the range like git-
1540           submodule(1) summary does. When --submodule=diff is specified, the
1541           diff format is used. This format shows an inline diff of the
1542           changes in the submodule contents between the commit range.
1543           Defaults to diff.submodule or the short format if the config option
1544           is unset.
1545
1546       --color[=<when>]
1547           Show colored diff.  --color (i.e. without =<when>) is the same as
1548           --color=always.  <when> can be one of always, never, or auto.
1549
1550       --no-color
1551           Turn off colored diff. It is the same as --color=never.
1552
1553       --color-moved[=<mode>]
1554           Moved lines of code are colored differently. The <mode> defaults to
1555           no if the option is not given and to zebra if the option with no
1556           mode is given. The mode must be one of:
1557
1558           no
1559               Moved lines are not highlighted.
1560
1561           default
1562               Is a synonym for zebra. This may change to a more sensible mode
1563               in the future.
1564
1565           plain
1566               Any line that is added in one location and was removed in
1567               another location will be colored with color.diff.newMoved.
1568               Similarly color.diff.oldMoved will be used for removed lines
1569               that are added somewhere else in the diff. This mode picks up
1570               any moved line, but it is not very useful in a review to
1571               determine if a block of code was moved without permutation.
1572
1573           blocks
1574               Blocks of moved text of at least 20 alphanumeric characters are
1575               detected greedily. The detected blocks are painted using either
1576               the color.diff.{old,new}Moved color. Adjacent blocks cannot be
1577               told apart.
1578
1579           zebra
1580               Blocks of moved text are detected as in blocks mode. The blocks
1581               are painted using either the color.diff.{old,new}Moved color or
1582               color.diff.{old,new}MovedAlternative. The change between the
1583               two colors indicates that a new block was detected.
1584
1585           dimmed-zebra
1586               Similar to zebra, but additional dimming of uninteresting parts
1587               of moved code is performed. The bordering lines of two adjacent
1588               blocks are considered interesting, the rest is uninteresting.
1589               dimmed_zebra is a deprecated synonym.
1590
1591       --no-color-moved
1592           Turn off move detection. This can be used to override configuration
1593           settings. It is the same as --color-moved=no.
1594
1595       --color-moved-ws=<modes>
1596           This configures how whitespace is ignored when performing the move
1597           detection for --color-moved. These modes can be given as a comma
1598           separated list:
1599
1600           no
1601               Do not ignore whitespace when performing move detection.
1602
1603           ignore-space-at-eol
1604               Ignore changes in whitespace at EOL.
1605
1606           ignore-space-change
1607               Ignore changes in amount of whitespace. This ignores whitespace
1608               at line end, and considers all other sequences of one or more
1609               whitespace characters to be equivalent.
1610
1611           ignore-all-space
1612               Ignore whitespace when comparing lines. This ignores
1613               differences even if one line has whitespace where the other
1614               line has none.
1615
1616           allow-indentation-change
1617               Initially ignore any whitespace in the move detection, then
1618               group the moved code blocks only into a block if the change in
1619               whitespace is the same per line. This is incompatible with the
1620               other modes.
1621
1622       --no-color-moved-ws
1623           Do not ignore whitespace when performing move detection. This can
1624           be used to override configuration settings. It is the same as
1625           --color-moved-ws=no.
1626
1627       --word-diff[=<mode>]
1628           Show a word diff, using the <mode> to delimit changed words. By
1629           default, words are delimited by whitespace; see --word-diff-regex
1630           below. The <mode> defaults to plain, and must be one of:
1631
1632           color
1633               Highlight changed words using only colors. Implies --color.
1634
1635           plain
1636               Show words as [-removed-] and {+added+}. Makes no attempts to
1637               escape the delimiters if they appear in the input, so the
1638               output may be ambiguous.
1639
1640           porcelain
1641               Use a special line-based format intended for script
1642               consumption. Added/removed/unchanged runs are printed in the
1643               usual unified diff format, starting with a +/-/` ` character at
1644               the beginning of the line and extending to the end of the line.
1645               Newlines in the input are represented by a tilde ~ on a line of
1646               its own.
1647
1648           none
1649               Disable word diff again.
1650
1651           Note that despite the name of the first mode, color is used to
1652           highlight the changed parts in all modes if enabled.
1653
1654       --word-diff-regex=<regex>
1655           Use <regex> to decide what a word is, instead of considering runs
1656           of non-whitespace to be a word. Also implies --word-diff unless it
1657           was already enabled.
1658
1659           Every non-overlapping match of the <regex> is considered a word.
1660           Anything between these matches is considered whitespace and
1661           ignored(!) for the purposes of finding differences. You may want to
1662           append |[^[:space:]] to your regular expression to make sure that
1663           it matches all non-whitespace characters. A match that contains a
1664           newline is silently truncated(!) at the newline.
1665
1666           For example, --word-diff-regex=.  will treat each character as a
1667           word and, correspondingly, show differences character by character.
1668
1669           The regex can also be set via a diff driver or configuration
1670           option, see gitattributes(5) or git-config(1). Giving it explicitly
1671           overrides any diff driver or configuration setting. Diff drivers
1672           override configuration settings.
1673
1674       --color-words[=<regex>]
1675           Equivalent to --word-diff=color plus (if a regex was specified)
1676           --word-diff-regex=<regex>.
1677
1678       --no-renames
1679           Turn off rename detection, even when the configuration file gives
1680           the default to do so.
1681
1682       --[no-]rename-empty
1683           Whether to use empty blobs as rename source.
1684
1685       --check
1686           Warn if changes introduce conflict markers or whitespace errors.
1687           What are considered whitespace errors is controlled by
1688           core.whitespace configuration. By default, trailing whitespaces
1689           (including lines that consist solely of whitespaces) and a space
1690           character that is immediately followed by a tab character inside
1691           the initial indent of the line are considered whitespace errors.
1692           Exits with non-zero status if problems are found. Not compatible
1693           with --exit-code.
1694
1695       --ws-error-highlight=<kind>
1696           Highlight whitespace errors in the context, old or new lines of the
1697           diff. Multiple values are separated by comma, none resets previous
1698           values, default reset the list to new and all is a shorthand for
1699           old,new,context. When this option is not given, and the
1700           configuration variable diff.wsErrorHighlight is not set, only
1701           whitespace errors in new lines are highlighted. The whitespace
1702           errors are colored with color.diff.whitespace.
1703
1704       --full-index
1705           Instead of the first handful of characters, show the full pre- and
1706           post-image blob object names on the "index" line when generating
1707           patch format output.
1708
1709       --binary
1710           In addition to --full-index, output a binary diff that can be
1711           applied with git-apply. Implies --patch.
1712
1713       --abbrev[=<n>]
1714           Instead of showing the full 40-byte hexadecimal object name in
1715           diff-raw format output and diff-tree header lines, show only a
1716           partial prefix. This is independent of the --full-index option
1717           above, which controls the diff-patch output format. Non default
1718           number of digits can be specified with --abbrev=<n>.
1719
1720       -B[<n>][/<m>], --break-rewrites[=[<n>][/<m>]]
1721           Break complete rewrite changes into pairs of delete and create.
1722           This serves two purposes:
1723
1724           It affects the way a change that amounts to a total rewrite of a
1725           file not as a series of deletion and insertion mixed together with
1726           a very few lines that happen to match textually as the context, but
1727           as a single deletion of everything old followed by a single
1728           insertion of everything new, and the number m controls this aspect
1729           of the -B option (defaults to 60%).  -B/70% specifies that less
1730           than 30% of the original should remain in the result for Git to
1731           consider it a total rewrite (i.e. otherwise the resulting patch
1732           will be a series of deletion and insertion mixed together with
1733           context lines).
1734
1735           When used with -M, a totally-rewritten file is also considered as
1736           the source of a rename (usually -M only considers a file that
1737           disappeared as the source of a rename), and the number n controls
1738           this aspect of the -B option (defaults to 50%).  -B20% specifies
1739           that a change with addition and deletion compared to 20% or more of
1740           the file’s size are eligible for being picked up as a possible
1741           source of a rename to another file.
1742
1743       -M[<n>], --find-renames[=<n>]
1744           If generating diffs, detect and report renames for each commit. For
1745           following files across renames while traversing history, see
1746           --follow. If n is specified, it is a threshold on the similarity
1747           index (i.e. amount of addition/deletions compared to the file’s
1748           size). For example, -M90% means Git should consider a delete/add
1749           pair to be a rename if more than 90% of the file hasn’t changed.
1750           Without a % sign, the number is to be read as a fraction, with a
1751           decimal point before it. I.e., -M5 becomes 0.5, and is thus the
1752           same as -M50%. Similarly, -M05 is the same as -M5%. To limit
1753           detection to exact renames, use -M100%. The default similarity
1754           index is 50%.
1755
1756       -C[<n>], --find-copies[=<n>]
1757           Detect copies as well as renames. See also --find-copies-harder. If
1758           n is specified, it has the same meaning as for -M<n>.
1759
1760       --find-copies-harder
1761           For performance reasons, by default, -C option finds copies only if
1762           the original file of the copy was modified in the same changeset.
1763           This flag makes the command inspect unmodified files as candidates
1764           for the source of copy. This is a very expensive operation for
1765           large projects, so use it with caution. Giving more than one -C
1766           option has the same effect.
1767
1768       -D, --irreversible-delete
1769           Omit the preimage for deletes, i.e. print only the header but not
1770           the diff between the preimage and /dev/null. The resulting patch is
1771           not meant to be applied with patch or git apply; this is solely for
1772           people who want to just concentrate on reviewing the text after the
1773           change. In addition, the output obviously lacks enough information
1774           to apply such a patch in reverse, even manually, hence the name of
1775           the option.
1776
1777           When used together with -B, omit also the preimage in the deletion
1778           part of a delete/create pair.
1779
1780       -l<num>
1781           The -M and -C options require O(n^2) processing time where n is the
1782           number of potential rename/copy targets. This option prevents
1783           rename/copy detection from running if the number of rename/copy
1784           targets exceeds the specified number.
1785
1786       --diff-filter=[(A|C|D|M|R|T|U|X|B)...[*]]
1787           Select only files that are Added (A), Copied (C), Deleted (D),
1788           Modified (M), Renamed (R), have their type (i.e. regular file,
1789           symlink, submodule, ...) changed (T), are Unmerged (U), are Unknown
1790           (X), or have had their pairing Broken (B). Any combination of the
1791           filter characters (including none) can be used. When *
1792           (All-or-none) is added to the combination, all paths are selected
1793           if there is any file that matches other criteria in the comparison;
1794           if there is no file that matches other criteria, nothing is
1795           selected.
1796
1797           Also, these upper-case letters can be downcased to exclude. E.g.
1798           --diff-filter=ad excludes added and deleted paths.
1799
1800           Note that not all diffs can feature all types. For instance, diffs
1801           from the index to the working tree can never have Added entries
1802           (because the set of paths included in the diff is limited by what
1803           is in the index). Similarly, copied and renamed entries cannot
1804           appear if detection for those types is disabled.
1805
1806       -S<string>
1807           Look for differences that change the number of occurrences of the
1808           specified string (i.e. addition/deletion) in a file. Intended for
1809           the scripter’s use.
1810
1811           It is useful when you’re looking for an exact block of code (like a
1812           struct), and want to know the history of that block since it first
1813           came into being: use the feature iteratively to feed the
1814           interesting block in the preimage back into -S, and keep going
1815           until you get the very first version of the block.
1816
1817           Binary files are searched as well.
1818
1819       -G<regex>
1820           Look for differences whose patch text contains added/removed lines
1821           that match <regex>.
1822
1823           To illustrate the difference between -S<regex> --pickaxe-regex and
1824           -G<regex>, consider a commit with the following diff in the same
1825           file:
1826
1827               +    return !regexec(regexp, two->ptr, 1, &regmatch, 0);
1828               ...
1829               -    hit = !regexec(regexp, mf2.ptr, 1, &regmatch, 0);
1830
1831           While git log -G"regexec\(regexp" will show this commit, git log
1832           -S"regexec\(regexp" --pickaxe-regex will not (because the number of
1833           occurrences of that string did not change).
1834
1835           Unless --text is supplied patches of binary files without a
1836           textconv filter will be ignored.
1837
1838           See the pickaxe entry in gitdiffcore(7) for more information.
1839
1840       --find-object=<object-id>
1841           Look for differences that change the number of occurrences of the
1842           specified object. Similar to -S, just the argument is different in
1843           that it doesn’t search for a specific string but for a specific
1844           object id.
1845
1846           The object can be a blob or a submodule commit. It implies the -t
1847           option in git-log to also find trees.
1848
1849       --pickaxe-all
1850           When -S or -G finds a change, show all the changes in that
1851           changeset, not just the files that contain the change in <string>.
1852
1853       --pickaxe-regex
1854           Treat the <string> given to -S as an extended POSIX regular
1855           expression to match.
1856
1857       -O<orderfile>
1858           Control the order in which files appear in the output. This
1859           overrides the diff.orderFile configuration variable (see git-
1860           config(1)). To cancel diff.orderFile, use -O/dev/null.
1861
1862           The output order is determined by the order of glob patterns in
1863           <orderfile>. All files with pathnames that match the first pattern
1864           are output first, all files with pathnames that match the second
1865           pattern (but not the first) are output next, and so on. All files
1866           with pathnames that do not match any pattern are output last, as if
1867           there was an implicit match-all pattern at the end of the file. If
1868           multiple pathnames have the same rank (they match the same pattern
1869           but no earlier patterns), their output order relative to each other
1870           is the normal order.
1871
1872           <orderfile> is parsed as follows:
1873
1874           ·   Blank lines are ignored, so they can be used as separators for
1875               readability.
1876
1877           ·   Lines starting with a hash ("#") are ignored, so they can be
1878               used for comments. Add a backslash ("\") to the beginning of
1879               the pattern if it starts with a hash.
1880
1881           ·   Each other line contains a single pattern.
1882
1883           Patterns have the same syntax and semantics as patterns used for
1884           fnmatch(3) without the FNM_PATHNAME flag, except a pathname also
1885           matches a pattern if removing any number of the final pathname
1886           components matches the pattern. For example, the pattern "foo*bar"
1887           matches "fooasdfbar" and "foo/bar/baz/asdf" but not "foobarx".
1888
1889       -R
1890           Swap two inputs; that is, show differences from index or on-disk
1891           file to tree contents.
1892
1893       --relative[=<path>]
1894           When run from a subdirectory of the project, it can be told to
1895           exclude changes outside the directory and show pathnames relative
1896           to it with this option. When you are not in a subdirectory (e.g. in
1897           a bare repository), you can name which subdirectory to make the
1898           output relative to by giving a <path> as an argument.
1899
1900       -a, --text
1901           Treat all files as text.
1902
1903       --ignore-cr-at-eol
1904           Ignore carriage-return at the end of line when doing a comparison.
1905
1906       --ignore-space-at-eol
1907           Ignore changes in whitespace at EOL.
1908
1909       -b, --ignore-space-change
1910           Ignore changes in amount of whitespace. This ignores whitespace at
1911           line end, and considers all other sequences of one or more
1912           whitespace characters to be equivalent.
1913
1914       -w, --ignore-all-space
1915           Ignore whitespace when comparing lines. This ignores differences
1916           even if one line has whitespace where the other line has none.
1917
1918       --ignore-blank-lines
1919           Ignore changes whose lines are all blank.
1920
1921       --inter-hunk-context=<lines>
1922           Show the context between diff hunks, up to the specified number of
1923           lines, thereby fusing hunks that are close to each other. Defaults
1924           to diff.interHunkContext or 0 if the config option is unset.
1925
1926       -W, --function-context
1927           Show whole surrounding functions of changes.
1928
1929       --ext-diff
1930           Allow an external diff helper to be executed. If you set an
1931           external diff driver with gitattributes(5), you need to use this
1932           option with git-log(1) and friends.
1933
1934       --no-ext-diff
1935           Disallow external diff drivers.
1936
1937       --textconv, --no-textconv
1938           Allow (or disallow) external text conversion filters to be run when
1939           comparing binary files. See gitattributes(5) for details. Because
1940           textconv filters are typically a one-way conversion, the resulting
1941           diff is suitable for human consumption, but cannot be applied. For
1942           this reason, textconv filters are enabled by default only for git-
1943           diff(1) and git-log(1), but not for git-format-patch(1) or diff
1944           plumbing commands.
1945
1946       --ignore-submodules[=<when>]
1947           Ignore changes to submodules in the diff generation. <when> can be
1948           either "none", "untracked", "dirty" or "all", which is the default.
1949           Using "none" will consider the submodule modified when it either
1950           contains untracked or modified files or its HEAD differs from the
1951           commit recorded in the superproject and can be used to override any
1952           settings of the ignore option in git-config(1) or gitmodules(5).
1953           When "untracked" is used submodules are not considered dirty when
1954           they only contain untracked content (but they are still scanned for
1955           modified content). Using "dirty" ignores all changes to the work
1956           tree of submodules, only changes to the commits stored in the
1957           superproject are shown (this was the behavior until 1.7.0). Using
1958           "all" hides all changes to submodules.
1959
1960       --src-prefix=<prefix>
1961           Show the given source prefix instead of "a/".
1962
1963       --dst-prefix=<prefix>
1964           Show the given destination prefix instead of "b/".
1965
1966       --no-prefix
1967           Do not show any source or destination prefix.
1968
1969       --line-prefix=<prefix>
1970           Prepend an additional prefix to every line of output.
1971
1972       --ita-invisible-in-index
1973           By default entries added by "git add -N" appear as an existing
1974           empty file in "git diff" and a new file in "git diff --cached".
1975           This option makes the entry appear as a new file in "git diff" and
1976           non-existent in "git diff --cached". This option could be reverted
1977           with --ita-visible-in-index. Both options are experimental and
1978           could be removed in future.
1979
1980       For more detailed explanation on these common options, see also
1981       gitdiffcore(7).
1982

GENERATING PATCH TEXT WITH -P

1984       Running git-diff(1), git-log(1), git-show(1), git-diff-index(1), git-
1985       diff-tree(1), or git-diff-files(1) with the -p option produces patch
1986       text. You can customize the creation of patch text via the
1987       GIT_EXTERNAL_DIFF and the GIT_DIFF_OPTS environment variables.
1988
1989       What the -p option produces is slightly different from the traditional
1990       diff format:
1991
1992        1. It is preceded with a "git diff" header that looks like this:
1993
1994               diff --git a/file1 b/file2
1995
1996           The a/ and b/ filenames are the same unless rename/copy is
1997           involved. Especially, even for a creation or a deletion, /dev/null
1998           is not used in place of the a/ or b/ filenames.
1999
2000           When rename/copy is involved, file1 and file2 show the name of the
2001           source file of the rename/copy and the name of the file that
2002           rename/copy produces, respectively.
2003
2004        2. It is followed by one or more extended header lines:
2005
2006               old mode <mode>
2007               new mode <mode>
2008               deleted file mode <mode>
2009               new file mode <mode>
2010               copy from <path>
2011               copy to <path>
2012               rename from <path>
2013               rename to <path>
2014               similarity index <number>
2015               dissimilarity index <number>
2016               index <hash>..<hash> <mode>
2017
2018           File modes are printed as 6-digit octal numbers including the file
2019           type and file permission bits.
2020
2021           Path names in extended headers do not include the a/ and b/
2022           prefixes.
2023
2024           The similarity index is the percentage of unchanged lines, and the
2025           dissimilarity index is the percentage of changed lines. It is a
2026           rounded down integer, followed by a percent sign. The similarity
2027           index value of 100% is thus reserved for two equal files, while
2028           100% dissimilarity means that no line from the old file made it
2029           into the new one.
2030
2031           The index line includes the blob object names before and after the
2032           change. The <mode> is included if the file mode does not change;
2033           otherwise, separate lines indicate the old and the new mode.
2034
2035        3. Pathnames with "unusual" characters are quoted as explained for the
2036           configuration variable core.quotePath (see git-config(1)).
2037
2038        4. All the file1 files in the output refer to files before the commit,
2039           and all the file2 files refer to files after the commit. It is
2040           incorrect to apply each change to each file sequentially. For
2041           example, this patch will swap a and b:
2042
2043               diff --git a/a b/b
2044               rename from a
2045               rename to b
2046               diff --git a/b b/a
2047               rename from b
2048               rename to a
2049

COMBINED DIFF FORMAT

2051       Any diff-generating command can take the -c or --cc option to produce a
2052       combined diff when showing a merge. This is the default format when
2053       showing merges with git-diff(1) or git-show(1). Note also that you can
2054       give the -m option to any of these commands to force generation of
2055       diffs with individual parents of a merge.
2056
2057       A "combined diff" format looks like this:
2058
2059           diff --combined describe.c
2060           index fabadb8,cc95eb0..4866510
2061           --- a/describe.c
2062           +++ b/describe.c
2063           @@@ -98,20 -98,12 +98,20 @@@
2064                   return (a_date > b_date) ? -1 : (a_date == b_date) ? 0 : 1;
2065             }
2066
2067           - static void describe(char *arg)
2068            -static void describe(struct commit *cmit, int last_one)
2069           ++static void describe(char *arg, int last_one)
2070             {
2071            +      unsigned char sha1[20];
2072            +      struct commit *cmit;
2073                   struct commit_list *list;
2074                   static int initialized = 0;
2075                   struct commit_name *n;
2076
2077            +      if (get_sha1(arg, sha1) < 0)
2078            +              usage(describe_usage);
2079            +      cmit = lookup_commit_reference(sha1);
2080            +      if (!cmit)
2081            +              usage(describe_usage);
2082            +
2083                   if (!initialized) {
2084                           initialized = 1;
2085                           for_each_ref(get_name);
2086
2087
2088
2089        1. It is preceded with a "git diff" header, that looks like this (when
2090           the -c option is used):
2091
2092               diff --combined file
2093
2094           or like this (when the --cc option is used):
2095
2096               diff --cc file
2097
2098        2. It is followed by one or more extended header lines (this example
2099           shows a merge with two parents):
2100
2101               index <hash>,<hash>..<hash>
2102               mode <mode>,<mode>..<mode>
2103               new file mode <mode>
2104               deleted file mode <mode>,<mode>
2105
2106           The mode <mode>,<mode>..<mode> line appears only if at least one of
2107           the <mode> is different from the rest. Extended headers with
2108           information about detected contents movement (renames and copying
2109           detection) are designed to work with diff of two <tree-ish> and are
2110           not used by combined diff format.
2111
2112        3. It is followed by two-line from-file/to-file header
2113
2114               --- a/file
2115               +++ b/file
2116
2117           Similar to two-line header for traditional unified diff format,
2118           /dev/null is used to signal created or deleted files.
2119
2120           However, if the --combined-all-paths option is provided, instead of
2121           a two-line from-file/to-file you get a N+1 line from-file/to-file
2122           header, where N is the number of parents in the merge commit
2123
2124               --- a/file
2125               --- a/file
2126               --- a/file
2127               +++ b/file
2128
2129           This extended format can be useful if rename or copy detection is
2130           active, to allow you to see the original name of the file in
2131           different parents.
2132
2133        4. Chunk header format is modified to prevent people from accidentally
2134           feeding it to patch -p1. Combined diff format was created for
2135           review of merge commit changes, and was not meant to be applied.
2136           The change is similar to the change in the extended index header:
2137
2138               @@@ <from-file-range> <from-file-range> <to-file-range> @@@
2139
2140           There are (number of parents + 1) @ characters in the chunk header
2141           for combined diff format.
2142
2143       Unlike the traditional unified diff format, which shows two files A and
2144       B with a single column that has - (minus — appears in A but removed in
2145       B), + (plus — missing in A but added to B), or " " (space — unchanged)
2146       prefix, this format compares two or more files file1, file2,... with
2147       one file X, and shows how X differs from each of fileN. One column for
2148       each of fileN is prepended to the output line to note how X’s line is
2149       different from it.
2150
2151       A - character in the column N means that the line appears in fileN but
2152       it does not appear in the result. A + character in the column N means
2153       that the line appears in the result, and fileN does not have that line
2154       (in other words, the line was added, from the point of view of that
2155       parent).
2156
2157       In the above example output, the function signature was changed from
2158       both files (hence two - removals from both file1 and file2, plus ++ to
2159       mean one line that was added does not appear in either file1 or file2).
2160       Also eight other lines are the same from file1 but do not appear in
2161       file2 (hence prefixed with +).
2162
2163       When shown by git diff-tree -c, it compares the parents of a merge
2164       commit with the merge result (i.e. file1..fileN are the parents). When
2165       shown by git diff-files -c, it compares the two unresolved merge
2166       parents with the working tree file (i.e. file1 is stage 2 aka "our
2167       version", file2 is stage 3 aka "their version").
2168

EXAMPLES

2170       git log --no-merges
2171           Show the whole commit history, but skip any merges
2172
2173       git log v2.6.12.. include/scsi drivers/scsi
2174           Show all commits since version v2.6.12 that changed any file in the
2175           include/scsi or drivers/scsi subdirectories
2176
2177       git log --since="2 weeks ago" -- gitk
2178           Show the changes during the last two weeks to the file gitk. The --
2179           is necessary to avoid confusion with the branch named gitk
2180
2181       git log --name-status release..test
2182           Show the commits that are in the "test" branch but not yet in the
2183           "release" branch, along with the list of paths each commit
2184           modifies.
2185
2186       git log --follow builtin/rev-list.c
2187           Shows the commits that changed builtin/rev-list.c, including those
2188           commits that occurred before the file was given its present name.
2189
2190       git log --branches --not --remotes=origin
2191           Shows all commits that are in any of local branches but not in any
2192           of remote-tracking branches for origin (what you have that origin
2193           doesn’t).
2194
2195       git log master --not --remotes=*/master
2196           Shows all commits that are in local master but not in any remote
2197           repository master branches.
2198
2199       git log -p -m --first-parent
2200           Shows the history including change diffs, but only from the “main
2201           branch” perspective, skipping commits that come from merged
2202           branches, and showing full diffs of changes introduced by the
2203           merges. This makes sense only when following a strict policy of
2204           merging all topic branches when staying on a single integration
2205           branch.
2206
2207       git log -L '/int main/',/^}/:main.c
2208           Shows how the function main() in the file main.c evolved over time.
2209
2210       git log -3
2211           Limits the number of commits to show to 3.
2212

DISCUSSION

2214       Git is to some extent character encoding agnostic.
2215
2216       ·   The contents of the blob objects are uninterpreted sequences of
2217           bytes. There is no encoding translation at the core level.
2218
2219       ·   Path names are encoded in UTF-8 normalization form C. This applies
2220           to tree objects, the index file, ref names, as well as path names
2221           in command line arguments, environment variables and config files
2222           (.git/config (see git-config(1)), gitignore(5), gitattributes(5)
2223           and gitmodules(5)).
2224
2225           Note that Git at the core level treats path names simply as
2226           sequences of non-NUL bytes, there are no path name encoding
2227           conversions (except on Mac and Windows). Therefore, using non-ASCII
2228           path names will mostly work even on platforms and file systems that
2229           use legacy extended ASCII encodings. However, repositories created
2230           on such systems will not work properly on UTF-8-based systems (e.g.
2231           Linux, Mac, Windows) and vice versa. Additionally, many Git-based
2232           tools simply assume path names to be UTF-8 and will fail to display
2233           other encodings correctly.
2234
2235       ·   Commit log messages are typically encoded in UTF-8, but other
2236           extended ASCII encodings are also supported. This includes
2237           ISO-8859-x, CP125x and many others, but not UTF-16/32, EBCDIC and
2238           CJK multi-byte encodings (GBK, Shift-JIS, Big5, EUC-x, CP9xx etc.).
2239
2240       Although we encourage that the commit log messages are encoded in
2241       UTF-8, both the core and Git Porcelain are designed not to force UTF-8
2242       on projects. If all participants of a particular project find it more
2243       convenient to use legacy encodings, Git does not forbid it. However,
2244       there are a few things to keep in mind.
2245
2246        1. git commit and git commit-tree issues a warning if the commit log
2247           message given to it does not look like a valid UTF-8 string, unless
2248           you explicitly say your project uses a legacy encoding. The way to
2249           say this is to have i18n.commitencoding in .git/config file, like
2250           this:
2251
2252               [i18n]
2253                       commitEncoding = ISO-8859-1
2254
2255           Commit objects created with the above setting record the value of
2256           i18n.commitEncoding in its encoding header. This is to help other
2257           people who look at them later. Lack of this header implies that the
2258           commit log message is encoded in UTF-8.
2259
2260        2. git log, git show, git blame and friends look at the encoding
2261           header of a commit object, and try to re-code the log message into
2262           UTF-8 unless otherwise specified. You can specify the desired
2263           output encoding with i18n.logOutputEncoding in .git/config file,
2264           like this:
2265
2266               [i18n]
2267                       logOutputEncoding = ISO-8859-1
2268
2269           If you do not have this configuration variable, the value of
2270           i18n.commitEncoding is used instead.
2271
2272       Note that we deliberately chose not to re-code the commit log message
2273       when a commit is made to force UTF-8 at the commit object level,
2274       because re-coding to UTF-8 is not necessarily a reversible operation.
2275

CONFIGURATION

2277       See git-config(1) for core variables and git-diff(1) for settings
2278       related to diff generation.
2279
2280       format.pretty
2281           Default for the --format option. (See Pretty Formats above.)
2282           Defaults to medium.
2283
2284       i18n.logOutputEncoding
2285           Encoding to use when displaying logs. (See Discussion above.)
2286           Defaults to the value of i18n.commitEncoding if set, and UTF-8
2287           otherwise.
2288
2289       log.date
2290           Default format for human-readable dates. (Compare the --date
2291           option.) Defaults to "default", which means to write dates like Sat
2292           May 8 19:35:34 2010 -0500.
2293
2294           If the format is set to "auto:foo" and the pager is in use, format
2295           "foo" will be the used for the date format. Otherwise "default"
2296           will be used.
2297
2298       log.follow
2299           If true, git log will act as if the --follow option was used when a
2300           single <path> is given. This has the same limitations as --follow,
2301           i.e. it cannot be used to follow multiple files and does not work
2302           well on non-linear history.
2303
2304       log.showRoot
2305           If false, git log and related commands will not treat the initial
2306           commit as a big creation event. Any root commits in git log -p
2307           output would be shown without a diff attached. The default is true.
2308
2309       log.showSignature
2310           If true, git log and related commands will act as if the
2311           --show-signature option was passed to them.
2312
2313       mailmap.*
2314           See git-shortlog(1).
2315
2316       notes.displayRef
2317           Which refs, in addition to the default set by core.notesRef or
2318           GIT_NOTES_REF, to read notes from when showing commit messages with
2319           the log family of commands. See git-notes(1).
2320
2321           May be an unabbreviated ref name or a glob and may be specified
2322           multiple times. A warning will be issued for refs that do not
2323           exist, but a glob that does not match any refs is silently ignored.
2324
2325           This setting can be disabled by the --no-notes option, overridden
2326           by the GIT_NOTES_DISPLAY_REF environment variable, and overridden
2327           by the --notes=<ref> option.
2328

GIT

2330       Part of the git(1) suite
2331
2332
2333
2334Git 2.24.1                        12/10/2019                        GIT-LOG(1)
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