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1 // Please don't remove this comment as asciidoc behaves badly when
2 // the first non-empty line is ifdef/ifndef. The symptom is that
3 // without this comment the <git-diff-core> attribute conditionally
4 // defined below ends up being defined unconditionally.
5 // Last checked with asciidoc 7.0.2.
6
7 ifndef::git-format-patch[]
8 ifndef::git-diff[]
9 ifndef::git-log[]
10 :git-diff-core: 1
11 endif::git-log[]
12 endif::git-diff[]
13 endif::git-format-patch[]
14
15 ifdef::git-format-patch[]
16 -p::
17 --no-stat::
18 Generate plain patches without any diffstats.
19 endif::git-format-patch[]
20
21 ifndef::git-format-patch[]
22 -p::
23 -u::
24 --patch::
25 Generate patch (see section on generating patches).
26 ifdef::git-diff[]
27 This is the default.
28 endif::git-diff[]
29
30 -s::
31 --no-patch::
32 Suppress diff output. Useful for commands like `git show` that
33 show the patch by default, or to cancel the effect of `--patch`.
34 endif::git-format-patch[]
35
36 ifdef::git-log[]
37 --diff-merges=(off|none|on|first-parent|1|separate|m|combined|c|dense-combined|cc)::
38 --no-diff-merges::
39 Specify diff format to be used for merge commits. Default is
40 {diff-merges-default} unless `--first-parent` is in use, in which case
41 `first-parent` is the default.
42 +
43 --diff-merges=(off|none):::
44 --no-diff-merges:::
45 Disable output of diffs for merge commits. Useful to override
46 implied value.
47 +
48 --diff-merges=on:::
49 --diff-merges=m:::
50 -m:::
51 This option makes diff output for merge commits to be shown in
52 the default format. `-m` will produce the output only if `-p`
53 is given as well. The default format could be changed using
54 `log.diffMerges` configuration parameter, which default value
55 is `separate`.
56 +
57 --diff-merges=first-parent:::
58 --diff-merges=1:::
59 This option makes merge commits show the full diff with
60 respect to the first parent only.
61 +
62 --diff-merges=separate:::
63 This makes merge commits show the full diff with respect to
64 each of the parents. Separate log entry and diff is generated
65 for each parent.
66 +
67 --diff-merges=combined:::
68 --diff-merges=c:::
69 -c:::
70 With this option, diff output for a merge commit shows the
71 differences from each of the parents to the merge result
72 simultaneously instead of showing pairwise diff between a
73 parent and the result one at a time. Furthermore, it lists
74 only files which were modified from all parents. `-c` implies
75 `-p`.
76 +
77 --diff-merges=dense-combined:::
78 --diff-merges=cc:::
79 --cc:::
80 With this option the output produced by
81 `--diff-merges=combined` is further compressed by omitting
82 uninteresting hunks whose contents in the parents have only
83 two variants and the merge result picks one of them without
84 modification. `--cc` implies `-p`.
85
86 --combined-all-paths::
87 This flag causes combined diffs (used for merge commits) to
88 list the name of the file from all parents. It thus only has
89 effect when `--diff-merges=[dense-]combined` is in use, and
90 is likely only useful if filename changes are detected (i.e.
91 when either rename or copy detection have been requested).
92 endif::git-log[]
93
94 -U<n>::
95 --unified=<n>::
96 Generate diffs with <n> lines of context instead of
97 the usual three.
98 ifndef::git-format-patch[]
99 Implies `--patch`.
100 endif::git-format-patch[]
101
102 --output=<file>::
103 Output to a specific file instead of stdout.
104
105 --output-indicator-new=<char>::
106 --output-indicator-old=<char>::
107 --output-indicator-context=<char>::
108 Specify the character used to indicate new, old or context
109 lines in the generated patch. Normally they are '+', '-' and
110 ' ' respectively.
111
112 ifndef::git-format-patch[]
113 --raw::
114 ifndef::git-log[]
115 Generate the diff in raw format.
116 ifdef::git-diff-core[]
117 This is the default.
118 endif::git-diff-core[]
119 endif::git-log[]
120 ifdef::git-log[]
121 For each commit, show a summary of changes using the raw diff
122 format. See the "RAW OUTPUT FORMAT" section of
123 linkgit:git-diff[1]. This is different from showing the log
124 itself in raw format, which you can achieve with
125 `--format=raw`.
126 endif::git-log[]
127 endif::git-format-patch[]
128
129 ifndef::git-format-patch[]
130 --patch-with-raw::
131 Synonym for `-p --raw`.
132 endif::git-format-patch[]
133
134 ifdef::git-log[]
135 -t::
136 Show the tree objects in the diff output.
137 endif::git-log[]
138
139 --indent-heuristic::
140 Enable the heuristic that shifts diff hunk boundaries to make patches
141 easier to read. This is the default.
142
143 --no-indent-heuristic::
144 Disable the indent heuristic.
145
146 --minimal::
147 Spend extra time to make sure the smallest possible
148 diff is produced.
149
150 --patience::
151 Generate a diff using the "patience diff" algorithm.
152
153 --histogram::
154 Generate a diff using the "histogram diff" algorithm.
155
156 --anchored=<text>::
157 Generate a diff using the "anchored diff" algorithm.
158 +
159 This option may be specified more than once.
160 +
161 If a line exists in both the source and destination, exists only once,
162 and starts with this text, this algorithm attempts to prevent it from
163 appearing as a deletion or addition in the output. It uses the "patience
164 diff" algorithm internally.
165
166 --diff-algorithm={patience|minimal|histogram|myers}::
167 Choose a diff algorithm. The variants are as follows:
168 +
169 --
170 `default`, `myers`;;
171 The basic greedy diff algorithm. Currently, this is the default.
172 `minimal`;;
173 Spend extra time to make sure the smallest possible diff is
174 produced.
175 `patience`;;
176 Use "patience diff" algorithm when generating patches.
177 `histogram`;;
178 This algorithm extends the patience algorithm to "support
179 low-occurrence common elements".
180 --
181 +
182 For instance, if you configured the `diff.algorithm` variable to a
183 non-default value and want to use the default one, then you
184 have to use `--diff-algorithm=default` option.
185
186 --stat[=<width>[,<name-width>[,<count>]]]::
187 Generate a diffstat. By default, as much space as necessary
188 will be used for the filename part, and the rest for the graph
189 part. Maximum width defaults to terminal width, or 80 columns
190 if not connected to a terminal, and can be overridden by
191 `<width>`. The width of the filename part can be limited by
192 giving another width `<name-width>` after a comma. The width
193 of the graph part can be limited by using
194 `--stat-graph-width=<width>` (affects all commands generating
195 a stat graph) or by setting `diff.statGraphWidth=<width>`
196 (does not affect `git format-patch`).
197 By giving a third parameter `<count>`, you can limit the
198 output to the first `<count>` lines, followed by `...` if
199 there are more.
200 +
201 These parameters can also be set individually with `--stat-width=<width>`,
202 `--stat-name-width=<name-width>` and `--stat-count=<count>`.
203
204 --compact-summary::
205 Output a condensed summary of extended header information such
206 as file creations or deletions ("new" or "gone", optionally "+l"
207 if it's a symlink) and mode changes ("+x" or "-x" for adding
208 or removing executable bit respectively) in diffstat. The
209 information is put between the filename part and the graph
210 part. Implies `--stat`.
211
212 --numstat::
213 Similar to `--stat`, but shows number of added and
214 deleted lines in decimal notation and pathname without
215 abbreviation, to make it more machine friendly. For
216 binary files, outputs two `-` instead of saying
217 `0 0`.
218
219 --shortstat::
220 Output only the last line of the `--stat` format containing total
221 number of modified files, as well as number of added and deleted
222 lines.
223
224 -X[<param1,param2,...>]::
225 --dirstat[=<param1,param2,...>]::
226 Output the distribution of relative amount of changes for each
227 sub-directory. The behavior of `--dirstat` can be customized by
228 passing it a comma separated list of parameters.
229 The defaults are controlled by the `diff.dirstat` configuration
230 variable (see linkgit:git-config[1]).
231 The following parameters are available:
232 +
233 --
234 `changes`;;
235 Compute the dirstat numbers by counting the lines that have been
236 removed from the source, or added to the destination. This ignores
237 the amount of pure code movements within a file. In other words,
238 rearranging lines in a file is not counted as much as other changes.
239 This is the default behavior when no parameter is given.
240 `lines`;;
241 Compute the dirstat numbers by doing the regular line-based diff
242 analysis, and summing the removed/added line counts. (For binary
243 files, count 64-byte chunks instead, since binary files have no
244 natural concept of lines). This is a more expensive `--dirstat`
245 behavior than the `changes` behavior, but it does count rearranged
246 lines within a file as much as other changes. The resulting output
247 is consistent with what you get from the other `--*stat` options.
248 `files`;;
249 Compute the dirstat numbers by counting the number of files changed.
250 Each changed file counts equally in the dirstat analysis. This is
251 the computationally cheapest `--dirstat` behavior, since it does
252 not have to look at the file contents at all.
253 `cumulative`;;
254 Count changes in a child directory for the parent directory as well.
255 Note that when using `cumulative`, the sum of the percentages
256 reported may exceed 100%. The default (non-cumulative) behavior can
257 be specified with the `noncumulative` parameter.
258 <limit>;;
259 An integer parameter specifies a cut-off percent (3% by default).
260 Directories contributing less than this percentage of the changes
261 are not shown in the output.
262 --
263 +
264 Example: The following will count changed files, while ignoring
265 directories with less than 10% of the total amount of changed files,
266 and accumulating child directory counts in the parent directories:
267 `--dirstat=files,10,cumulative`.
268
269 --cumulative::
270 Synonym for --dirstat=cumulative
271
272 --dirstat-by-file[=<param1,param2>...]::
273 Synonym for --dirstat=files,param1,param2...
274
275 --summary::
276 Output a condensed summary of extended header information
277 such as creations, renames and mode changes.
278
279 ifndef::git-format-patch[]
280 --patch-with-stat::
281 Synonym for `-p --stat`.
282 endif::git-format-patch[]
283
284 ifndef::git-format-patch[]
285
286 -z::
287 ifdef::git-log[]
288 Separate the commits with NULs instead of with new newlines.
289 +
290 Also, when `--raw` or `--numstat` has been given, do not munge
291 pathnames and use NULs as output field terminators.
292 endif::git-log[]
293 ifndef::git-log[]
294 When `--raw`, `--numstat`, `--name-only` or `--name-status` has been
295 given, do not munge pathnames and use NULs as output field terminators.
296 endif::git-log[]
297 +
298 Without this option, pathnames with "unusual" characters are quoted as
299 explained for the configuration variable `core.quotePath` (see
300 linkgit:git-config[1]).
301
302 --name-only::
303 Show only names of changed files.
304
305 --name-status::
306 Show only names and status of changed files. See the description
307 of the `--diff-filter` option on what the status letters mean.
308
309 --submodule[=<format>]::
310 Specify how differences in submodules are shown. When specifying
311 `--submodule=short` the 'short' format is used. This format just
312 shows the names of the commits at the beginning and end of the range.
313 When `--submodule` or `--submodule=log` is specified, the 'log'
314 format is used. This format lists the commits in the range like
315 linkgit:git-submodule[1] `summary` does. When `--submodule=diff`
316 is specified, the 'diff' format is used. This format shows an
317 inline diff of the changes in the submodule contents between the
318 commit range. Defaults to `diff.submodule` or the 'short' format
319 if the config option is unset.
320
321 --color[=<when>]::
322 Show colored diff.
323 `--color` (i.e. without '=<when>') is the same as `--color=always`.
324 '<when>' can be one of `always`, `never`, or `auto`.
325 ifdef::git-diff[]
326 It can be changed by the `color.ui` and `color.diff`
327 configuration settings.
328 endif::git-diff[]
329
330 --no-color::
331 Turn off colored diff.
332 ifdef::git-diff[]
333 This can be used to override configuration settings.
334 endif::git-diff[]
335 It is the same as `--color=never`.
336
337 --color-moved[=<mode>]::
338 Moved lines of code are colored differently.
339 ifdef::git-diff[]
340 It can be changed by the `diff.colorMoved` configuration setting.
341 endif::git-diff[]
342 The <mode> defaults to 'no' if the option is not given
343 and to 'zebra' if the option with no mode is given.
344 The mode must be one of:
345 +
346 --
347 no::
348 Moved lines are not highlighted.
349 default::
350 Is a synonym for `zebra`. This may change to a more sensible mode
351 in the future.
352 plain::
353 Any line that is added in one location and was removed
354 in another location will be colored with 'color.diff.newMoved'.
355 Similarly 'color.diff.oldMoved' will be used for removed lines
356 that are added somewhere else in the diff. This mode picks up any
357 moved line, but it is not very useful in a review to determine
358 if a block of code was moved without permutation.
359 blocks::
360 Blocks of moved text of at least 20 alphanumeric characters
361 are detected greedily. The detected blocks are
362 painted using either the 'color.diff.{old,new}Moved' color.
363 Adjacent blocks cannot be told apart.
364 zebra::
365 Blocks of moved text are detected as in 'blocks' mode. The blocks
366 are painted using either the 'color.diff.{old,new}Moved' color or
367 'color.diff.{old,new}MovedAlternative'. The change between
368 the two colors indicates that a new block was detected.
369 dimmed-zebra::
370 Similar to 'zebra', but additional dimming of uninteresting parts
371 of moved code is performed. The bordering lines of two adjacent
372 blocks are considered interesting, the rest is uninteresting.
373 `dimmed_zebra` is a deprecated synonym.
374 --
375
376 --no-color-moved::
377 Turn off move detection. This can be used to override configuration
378 settings. It is the same as `--color-moved=no`.
379
380 --color-moved-ws=<modes>::
381 This configures how whitespace is ignored when performing the
382 move detection for `--color-moved`.
383 ifdef::git-diff[]
384 It can be set by the `diff.colorMovedWS` configuration setting.
385 endif::git-diff[]
386 These modes can be given as a comma separated list:
387 +
388 --
389 no::
390 Do not ignore whitespace when performing move detection.
391 ignore-space-at-eol::
392 Ignore changes in whitespace at EOL.
393 ignore-space-change::
394 Ignore changes in amount of whitespace. This ignores whitespace
395 at line end, and considers all other sequences of one or
396 more whitespace characters to be equivalent.
397 ignore-all-space::
398 Ignore whitespace when comparing lines. This ignores differences
399 even if one line has whitespace where the other line has none.
400 allow-indentation-change::
401 Initially ignore any whitespace in the move detection, then
402 group the moved code blocks only into a block if the change in
403 whitespace is the same per line. This is incompatible with the
404 other modes.
405 --
406
407 --no-color-moved-ws::
408 Do not ignore whitespace when performing move detection. This can be
409 used to override configuration settings. It is the same as
410 `--color-moved-ws=no`.
411
412 --word-diff[=<mode>]::
413 Show a word diff, using the <mode> to delimit changed words.
414 By default, words are delimited by whitespace; see
415 `--word-diff-regex` below. The <mode> defaults to 'plain', and
416 must be one of:
417 +
418 --
419 color::
420 Highlight changed words using only colors. Implies `--color`.
421 plain::
422 Show words as `[-removed-]` and `{+added+}`. Makes no
423 attempts to escape the delimiters if they appear in the input,
424 so the output may be ambiguous.
425 porcelain::
426 Use a special line-based format intended for script
427 consumption. Added/removed/unchanged runs are printed in the
428 usual unified diff format, starting with a `+`/`-`/` `
429 character at the beginning of the line and extending to the
430 end of the line. Newlines in the input are represented by a
431 tilde `~` on a line of its own.
432 none::
433 Disable word diff again.
434 --
435 +
436 Note that despite the name of the first mode, color is used to
437 highlight the changed parts in all modes if enabled.
438
439 --word-diff-regex=<regex>::
440 Use <regex> to decide what a word is, instead of considering
441 runs of non-whitespace to be a word. Also implies
442 `--word-diff` unless it was already enabled.
443 +
444 Every non-overlapping match of the
445 <regex> is considered a word. Anything between these matches is
446 considered whitespace and ignored(!) for the purposes of finding
447 differences. You may want to append `|[^[:space:]]` to your regular
448 expression to make sure that it matches all non-whitespace characters.
449 A match that contains a newline is silently truncated(!) at the
450 newline.
451 +
452 For example, `--word-diff-regex=.` will treat each character as a word
453 and, correspondingly, show differences character by character.
454 +
455 The regex can also be set via a diff driver or configuration option, see
456 linkgit:gitattributes[5] or linkgit:git-config[1]. Giving it explicitly
457 overrides any diff driver or configuration setting. Diff drivers
458 override configuration settings.
459
460 --color-words[=<regex>]::
461 Equivalent to `--word-diff=color` plus (if a regex was
462 specified) `--word-diff-regex=<regex>`.
463 endif::git-format-patch[]
464
465 --no-renames::
466 Turn off rename detection, even when the configuration
467 file gives the default to do so.
468
469 --[no-]rename-empty::
470 Whether to use empty blobs as rename source.
471
472 ifndef::git-format-patch[]
473 --check::
474 Warn if changes introduce conflict markers or whitespace errors.
475 What are considered whitespace errors is controlled by `core.whitespace`
476 configuration. By default, trailing whitespaces (including
477 lines that consist solely of whitespaces) and a space character
478 that is immediately followed by a tab character inside the
479 initial indent of the line are considered whitespace errors.
480 Exits with non-zero status if problems are found. Not compatible
481 with --exit-code.
482
483 --ws-error-highlight=<kind>::
484 Highlight whitespace errors in the `context`, `old` or `new`
485 lines of the diff. Multiple values are separated by comma,
486 `none` resets previous values, `default` reset the list to
487 `new` and `all` is a shorthand for `old,new,context`. When
488 this option is not given, and the configuration variable
489 `diff.wsErrorHighlight` is not set, only whitespace errors in
490 `new` lines are highlighted. The whitespace errors are colored
491 with `color.diff.whitespace`.
492
493 endif::git-format-patch[]
494
495 --full-index::
496 Instead of the first handful of characters, show the full
497 pre- and post-image blob object names on the "index"
498 line when generating patch format output.
499
500 --binary::
501 In addition to `--full-index`, output a binary diff that
502 can be applied with `git-apply`.
503 ifndef::git-format-patch[]
504 Implies `--patch`.
505 endif::git-format-patch[]
506
507 --abbrev[=<n>]::
508 Instead of showing the full 40-byte hexadecimal object
509 name in diff-raw format output and diff-tree header
510 lines, show the shortest prefix that is at least '<n>'
511 hexdigits long that uniquely refers the object.
512 In diff-patch output format, `--full-index` takes higher
513 precedence, i.e. if `--full-index` is specified, full blob
514 names will be shown regardless of `--abbrev`.
515 Non default number of digits can be specified with `--abbrev=<n>`.
516
517 -B[<n>][/<m>]::
518 --break-rewrites[=[<n>][/<m>]]::
519 Break complete rewrite changes into pairs of delete and
520 create. This serves two purposes:
521 +
522 It affects the way a change that amounts to a total rewrite of a file
523 not as a series of deletion and insertion mixed together with a very
524 few lines that happen to match textually as the context, but as a
525 single deletion of everything old followed by a single insertion of
526 everything new, and the number `m` controls this aspect of the -B
527 option (defaults to 60%). `-B/70%` specifies that less than 30% of the
528 original should remain in the result for Git to consider it a total
529 rewrite (i.e. otherwise the resulting patch will be a series of
530 deletion and insertion mixed together with context lines).
531 +
532 When used with -M, a totally-rewritten file is also considered as the
533 source of a rename (usually -M only considers a file that disappeared
534 as the source of a rename), and the number `n` controls this aspect of
535 the -B option (defaults to 50%). `-B20%` specifies that a change with
536 addition and deletion compared to 20% or more of the file's size are
537 eligible for being picked up as a possible source of a rename to
538 another file.
539
540 -M[<n>]::
541 --find-renames[=<n>]::
542 ifndef::git-log[]
543 Detect renames.
544 endif::git-log[]
545 ifdef::git-log[]
546 If generating diffs, detect and report renames for each commit.
547 For following files across renames while traversing history, see
548 `--follow`.
549 endif::git-log[]
550 If `n` is specified, it is a threshold on the similarity
551 index (i.e. amount of addition/deletions compared to the
552 file's size). For example, `-M90%` means Git should consider a
553 delete/add pair to be a rename if more than 90% of the file
554 hasn't changed. Without a `%` sign, the number is to be read as
555 a fraction, with a decimal point before it. I.e., `-M5` becomes
556 0.5, and is thus the same as `-M50%`. Similarly, `-M05` is
557 the same as `-M5%`. To limit detection to exact renames, use
558 `-M100%`. The default similarity index is 50%.
559
560 -C[<n>]::
561 --find-copies[=<n>]::
562 Detect copies as well as renames. See also `--find-copies-harder`.
563 If `n` is specified, it has the same meaning as for `-M<n>`.
564
565 --find-copies-harder::
566 For performance reasons, by default, `-C` option finds copies only
567 if the original file of the copy was modified in the same
568 changeset. This flag makes the command
569 inspect unmodified files as candidates for the source of
570 copy. This is a very expensive operation for large
571 projects, so use it with caution. Giving more than one
572 `-C` option has the same effect.
573
574 -D::
575 --irreversible-delete::
576 Omit the preimage for deletes, i.e. print only the header but not
577 the diff between the preimage and `/dev/null`. The resulting patch
578 is not meant to be applied with `patch` or `git apply`; this is
579 solely for people who want to just concentrate on reviewing the
580 text after the change. In addition, the output obviously lacks
581 enough information to apply such a patch in reverse, even manually,
582 hence the name of the option.
583 +
584 When used together with `-B`, omit also the preimage in the deletion part
585 of a delete/create pair.
586
587 -l<num>::
588 The `-M` and `-C` options require O(n^2) processing time where n
589 is the number of potential rename/copy targets. This
590 option prevents rename/copy detection from running if
591 the number of rename/copy targets exceeds the specified
592 number.
593
594 ifndef::git-format-patch[]
595 --diff-filter=[(A|C|D|M|R|T|U|X|B)...[*]]::
596 Select only files that are Added (`A`), Copied (`C`),
597 Deleted (`D`), Modified (`M`), Renamed (`R`), have their
598 type (i.e. regular file, symlink, submodule, ...) changed (`T`),
599 are Unmerged (`U`), are
600 Unknown (`X`), or have had their pairing Broken (`B`).
601 Any combination of the filter characters (including none) can be used.
602 When `*` (All-or-none) is added to the combination, all
603 paths are selected if there is any file that matches
604 other criteria in the comparison; if there is no file
605 that matches other criteria, nothing is selected.
606 +
607 Also, these upper-case letters can be downcased to exclude. E.g.
608 `--diff-filter=ad` excludes added and deleted paths.
609 +
610 Note that not all diffs can feature all types. For instance, diffs
611 from the index to the working tree can never have Added entries
612 (because the set of paths included in the diff is limited by what is in
613 the index). Similarly, copied and renamed entries cannot appear if
614 detection for those types is disabled.
615
616 -S<string>::
617 Look for differences that change the number of occurrences of
618 the specified string (i.e. addition/deletion) in a file.
619 Intended for the scripter's use.
620 +
621 It is useful when you're looking for an exact block of code (like a
622 struct), and want to know the history of that block since it first
623 came into being: use the feature iteratively to feed the interesting
624 block in the preimage back into `-S`, and keep going until you get the
625 very first version of the block.
626 +
627 Binary files are searched as well.
628
629 -G<regex>::
630 Look for differences whose patch text contains added/removed
631 lines that match <regex>.
632 +
633 To illustrate the difference between `-S<regex> --pickaxe-regex` and
634 `-G<regex>`, consider a commit with the following diff in the same
635 file:
636 +
637 ----
638 + return frotz(nitfol, two->ptr, 1, 0);
639 ...
640 - hit = frotz(nitfol, mf2.ptr, 1, 0);
641 ----
642 +
643 While `git log -G"frotz\(nitfol"` will show this commit, `git log
644 -S"frotz\(nitfol" --pickaxe-regex` will not (because the number of
645 occurrences of that string did not change).
646 +
647 Unless `--text` is supplied patches of binary files without a textconv
648 filter will be ignored.
649 +
650 See the 'pickaxe' entry in linkgit:gitdiffcore[7] for more
651 information.
652
653 --find-object=<object-id>::
654 Look for differences that change the number of occurrences of
655 the specified object. Similar to `-S`, just the argument is different
656 in that it doesn't search for a specific string but for a specific
657 object id.
658 +
659 The object can be a blob or a submodule commit. It implies the `-t` option in
660 `git-log` to also find trees.
661
662 --pickaxe-all::
663 When `-S` or `-G` finds a change, show all the changes in that
664 changeset, not just the files that contain the change
665 in <string>.
666
667 --pickaxe-regex::
668 Treat the <string> given to `-S` as an extended POSIX regular
669 expression to match.
670
671 endif::git-format-patch[]
672
673 -O<orderfile>::
674 Control the order in which files appear in the output.
675 This overrides the `diff.orderFile` configuration variable
676 (see linkgit:git-config[1]). To cancel `diff.orderFile`,
677 use `-O/dev/null`.
678 +
679 The output order is determined by the order of glob patterns in
680 <orderfile>.
681 All files with pathnames that match the first pattern are output
682 first, all files with pathnames that match the second pattern (but not
683 the first) are output next, and so on.
684 All files with pathnames that do not match any pattern are output
685 last, as if there was an implicit match-all pattern at the end of the
686 file.
687 If multiple pathnames have the same rank (they match the same pattern
688 but no earlier patterns), their output order relative to each other is
689 the normal order.
690 +
691 <orderfile> is parsed as follows:
692 +
693 --
694 - Blank lines are ignored, so they can be used as separators for
695 readability.
696
697 - Lines starting with a hash ("`#`") are ignored, so they can be used
698 for comments. Add a backslash ("`\`") to the beginning of the
699 pattern if it starts with a hash.
700
701 - Each other line contains a single pattern.
702 --
703 +
704 Patterns have the same syntax and semantics as patterns used for
705 fnmatch(3) without the FNM_PATHNAME flag, except a pathname also
706 matches a pattern if removing any number of the final pathname
707 components matches the pattern. For example, the pattern "`foo*bar`"
708 matches "`fooasdfbar`" and "`foo/bar/baz/asdf`" but not "`foobarx`".
709
710 --skip-to=<file>::
711 --rotate-to=<file>::
712 Discard the files before the named <file> from the output
713 (i.e. 'skip to'), or move them to the end of the output
714 (i.e. 'rotate to'). These were invented primarily for use
715 of the `git difftool` command, and may not be very useful
716 otherwise.
717
718 ifndef::git-format-patch[]
719 -R::
720 Swap two inputs; that is, show differences from index or
721 on-disk file to tree contents.
722 endif::git-format-patch[]
723
724 --relative[=<path>]::
725 --no-relative::
726 When run from a subdirectory of the project, it can be
727 told to exclude changes outside the directory and show
728 pathnames relative to it with this option. When you are
729 not in a subdirectory (e.g. in a bare repository), you
730 can name which subdirectory to make the output relative
731 to by giving a <path> as an argument.
732 `--no-relative` can be used to countermand both `diff.relative` config
733 option and previous `--relative`.
734
735 -a::
736 --text::
737 Treat all files as text.
738
739 --ignore-cr-at-eol::
740 Ignore carriage-return at the end of line when doing a comparison.
741
742 --ignore-space-at-eol::
743 Ignore changes in whitespace at EOL.
744
745 -b::
746 --ignore-space-change::
747 Ignore changes in amount of whitespace. This ignores whitespace
748 at line end, and considers all other sequences of one or
749 more whitespace characters to be equivalent.
750
751 -w::
752 --ignore-all-space::
753 Ignore whitespace when comparing lines. This ignores
754 differences even if one line has whitespace where the other
755 line has none.
756
757 --ignore-blank-lines::
758 Ignore changes whose lines are all blank.
759
760 -I<regex>::
761 --ignore-matching-lines=<regex>::
762 Ignore changes whose all lines match <regex>. This option may
763 be specified more than once.
764
765 --inter-hunk-context=<lines>::
766 Show the context between diff hunks, up to the specified number
767 of lines, thereby fusing hunks that are close to each other.
768 Defaults to `diff.interHunkContext` or 0 if the config option
769 is unset.
770
771 -W::
772 --function-context::
773 Show whole function as context lines for each change.
774 The function names are determined in the same way as
775 `git diff` works out patch hunk headers (see 'Defining a
776 custom hunk-header' in linkgit:gitattributes[5]).
777
778 ifndef::git-format-patch[]
779 ifndef::git-log[]
780 --exit-code::
781 Make the program exit with codes similar to diff(1).
782 That is, it exits with 1 if there were differences and
783 0 means no differences.
784
785 --quiet::
786 Disable all output of the program. Implies `--exit-code`.
787 endif::git-log[]
788 endif::git-format-patch[]
789
790 --ext-diff::
791 Allow an external diff helper to be executed. If you set an
792 external diff driver with linkgit:gitattributes[5], you need
793 to use this option with linkgit:git-log[1] and friends.
794
795 --no-ext-diff::
796 Disallow external diff drivers.
797
798 --textconv::
799 --no-textconv::
800 Allow (or disallow) external text conversion filters to be run
801 when comparing binary files. See linkgit:gitattributes[5] for
802 details. Because textconv filters are typically a one-way
803 conversion, the resulting diff is suitable for human
804 consumption, but cannot be applied. For this reason, textconv
805 filters are enabled by default only for linkgit:git-diff[1] and
806 linkgit:git-log[1], but not for linkgit:git-format-patch[1] or
807 diff plumbing commands.
808
809 --ignore-submodules[=<when>]::
810 Ignore changes to submodules in the diff generation. <when> can be
811 either "none", "untracked", "dirty" or "all", which is the default.
812 Using "none" will consider the submodule modified when it either contains
813 untracked or modified files or its HEAD differs from the commit recorded
814 in the superproject and can be used to override any settings of the
815 'ignore' option in linkgit:git-config[1] or linkgit:gitmodules[5]. When
816 "untracked" is used submodules are not considered dirty when they only
817 contain untracked content (but they are still scanned for modified
818 content). Using "dirty" ignores all changes to the work tree of submodules,
819 only changes to the commits stored in the superproject are shown (this was
820 the behavior until 1.7.0). Using "all" hides all changes to submodules.
821
822 --src-prefix=<prefix>::
823 Show the given source prefix instead of "a/".
824
825 --dst-prefix=<prefix>::
826 Show the given destination prefix instead of "b/".
827
828 --no-prefix::
829 Do not show any source or destination prefix.
830
831 --line-prefix=<prefix>::
832 Prepend an additional prefix to every line of output.
833
834 --ita-invisible-in-index::
835 By default entries added by "git add -N" appear as an existing
836 empty file in "git diff" and a new file in "git diff --cached".
837 This option makes the entry appear as a new file in "git diff"
838 and non-existent in "git diff --cached". This option could be
839 reverted with `--ita-visible-in-index`. Both options are
840 experimental and could be removed in future.
841
842 For more detailed explanation on these common options, see also
843 linkgit:gitdiffcore[7].