-u::
--patch::
Generate patch (see section on generating patches).
- {git-diff? This is the default.}
-endif::git-format-patch[]
+ifdef::git-diff[]
+ This is the default.
+endif::git-diff[]
-s::
--no-patch::
Suppress diff output. Useful for commands like `git show` that
show the patch by default, or to cancel the effect of `--patch`.
+endif::git-format-patch[]
-U<n>::
--unified=<n>::
ifndef::git-format-patch[]
--raw::
- Generate the raw format.
- {git-diff-core? This is the default.}
+ifndef::git-log[]
+ Generate the diff in raw format.
+ifdef::git-diff-core[]
+ This is the default.
+endif::git-diff-core[]
+endif::git-log[]
+ifdef::git-log[]
+ For each commit, show a summary of changes using the raw diff
+ format. See the "RAW OUTPUT FORMAT" section of
+ linkgit:git-diff[1]. This is different from showing the log
+ itself in raw format, which you can achieve with
+ `--format=raw`.
+endif::git-log[]
endif::git-format-patch[]
ifndef::git-format-patch[]
Synonym for `-p --raw`.
endif::git-format-patch[]
+--indent-heuristic::
+ Enable the heuristic that shift diff hunk boundaries to make patches
+ easier to read. This is the default.
+
+--no-indent-heuristic::
+ Disable the indent heuristic.
+
--minimal::
Spend extra time to make sure the smallest possible
diff is produced.
given, do not munge pathnames and use NULs as output field terminators.
endif::git-log[]
+
-Without this option, each pathname output will have TAB, LF, double quotes,
-and backslash characters replaced with `\t`, `\n`, `\"`, and `\\`,
-respectively, and the pathname will be enclosed in double quotes if
-any of those replacements occurred.
+Without this option, pathnames with "unusual" characters are quoted as
+explained for the configuration variable `core.quotePath` (see
+linkgit:git-config[1]).
--name-only::
Show only names of changed files.
of the `--diff-filter` option on what the status letters mean.
--submodule[=<format>]::
- Specify how differences in submodules are shown. When `--submodule`
- or `--submodule=log` is given, the 'log' format is used. This format lists
- the commits in the range like linkgit:git-submodule[1] `summary` does.
- Omitting the `--submodule` option or specifying `--submodule=short`,
- uses the 'short' format. This format just shows the names of the commits
- at the beginning and end of the range. Can be tweaked via the
- `diff.submodule` configuration variable.
+ Specify how differences in submodules are shown. When specifying
+ `--submodule=short` the 'short' format is used. This format just
+ shows the names of the commits at the beginning and end of the range.
+ When `--submodule` or `--submodule=log` is specified, the 'log'
+ format is used. This format lists the commits in the range like
+ linkgit:git-submodule[1] `summary` does. When `--submodule=diff`
+ is specified, the 'diff' format is used. This format shows an
+ inline diff of the changes in the submodule contents between the
+ commit range. Defaults to `diff.submodule` or the 'short' format
+ if the config option is unset.
--color[=<when>]::
Show colored diff.
endif::git-diff[]
It is the same as `--color=never`.
+--color-moved[=<mode>]::
+ Moved lines of code are colored differently.
+ifdef::git-diff[]
+ It can be changed by the `diff.colorMoved` configuration setting.
+endif::git-diff[]
+ The <mode> defaults to 'no' if the option is not given
+ and to 'zebra' if the option with no mode is given.
+ The mode must be one of:
++
+--
+no::
+ Moved lines are not highlighted.
+default::
+ Is a synonym for `zebra`. This may change to a more sensible mode
+ in the future.
+plain::
+ Any line that is added in one location and was removed
+ in another location will be colored with 'color.diff.newMoved'.
+ Similarly 'color.diff.oldMoved' will be used for removed lines
+ that are added somewhere else in the diff. This mode picks up any
+ moved line, but it is not very useful in a review to determine
+ if a block of code was moved without permutation.
+zebra::
+ Blocks of moved text of at least 20 alphanumeric characters
+ are detected greedily. The detected blocks are
+ painted using either the 'color.diff.{old,new}Moved' color or
+ 'color.diff.{old,new}MovedAlternative'. The change between
+ the two colors indicates that a new block was detected.
+dimmed_zebra::
+ Similar to 'zebra', but additional dimming of uninteresting parts
+ of moved code is performed. The bordering lines of two adjacent
+ blocks are considered interesting, the rest is uninteresting.
+--
+
--word-diff[=<mode>]::
Show a word diff, using the <mode> to delimit changed words.
By default, words are delimited by whitespace; see
A match that contains a newline is silently truncated(!) at the
newline.
+
+For example, `--word-diff-regex=.` will treat each character as a word
+and, correspondingly, show differences character by character.
++
The regex can also be set via a diff driver or configuration option, see
-linkgit:gitattributes[1] or linkgit:git-config[1]. Giving it explicitly
+linkgit:gitattributes[5] or linkgit:git-config[1]. Giving it explicitly
overrides any diff driver or configuration setting. Diff drivers
override configuration settings.
ifndef::git-format-patch[]
--check::
- Warn if changes introduce whitespace errors. What are
- considered whitespace errors is controlled by `core.whitespace`
+ Warn if changes introduce conflict markers or whitespace errors.
+ What are considered whitespace errors is controlled by `core.whitespace`
configuration. By default, trailing whitespaces (including
lines that solely consist of whitespaces) and a space character
that is immediately followed by a tab character inside the
initial indent of the line are considered whitespace errors.
Exits with non-zero status if problems are found. Not compatible
with --exit-code.
+
+--ws-error-highlight=<kind>::
+ Highlight whitespace errors in the `context`, `old` or `new`
+ lines of the diff. Multiple values are separated by comma,
+ `none` resets previous values, `default` reset the list to
+ `new` and `all` is a shorthand for `old,new,context`. When
+ this option is not given, and the configuration variable
+ `diff.wsErrorHighlight` is not set, only whitespace errors in
+ `new` lines are highlighted. The whitespace errors are colored
+ whith `color.diff.whitespace`.
+
endif::git-format-patch[]
--full-index::
a fraction, with a decimal point before it. I.e., `-M5` becomes
0.5, and is thus the same as `-M50%`. Similarly, `-M05` is
the same as `-M5%`. To limit detection to exact renames, use
- `-M100%`.
+ `-M100%`. The default similarity index is 50%.
-C[<n>]::
--find-copies[=<n>]::
--irreversible-delete::
Omit the preimage for deletes, i.e. print only the header but not
the diff between the preimage and `/dev/null`. The resulting patch
- is not meant to be applied with `patch` nor `git apply`; this is
+ is not meant to be applied with `patch` or `git apply`; this is
solely for people who want to just concentrate on reviewing the
- text after the change. In addition, the output obviously lack
+ text after the change. In addition, the output obviously lacks
enough information to apply such a patch in reverse, even manually,
hence the name of the option.
+
paths are selected if there is any file that matches
other criteria in the comparison; if there is no file
that matches other criteria, nothing is selected.
++
+Also, these upper-case letters can be downcased to exclude. E.g.
+`--diff-filter=ad` excludes added and deleted paths.
-S<string>::
- Look for differences that introduce or remove an instance of
- <string>. Note that this is different than the string simply
- appearing in diff output; see the 'pickaxe' entry in
- linkgit:gitdiffcore[7] for more details.
+ Look for differences that change the number of occurrences of
+ the specified string (i.e. addition/deletion) in a file.
+ Intended for the scripter's use.
++
+It is useful when you're looking for an exact block of code (like a
+struct), and want to know the history of that block since it first
+came into being: use the feature iteratively to feed the interesting
+block in the preimage back into `-S`, and keep going until you get the
+very first version of the block.
-G<regex>::
- Look for differences whose added or removed line matches
- the given <regex>.
+ Look for differences whose patch text contains added/removed
+ lines that match <regex>.
++
+To illustrate the difference between `-S<regex> --pickaxe-regex` and
+`-G<regex>`, consider a commit with the following diff in the same
+file:
++
+----
++ return !regexec(regexp, two->ptr, 1, ®match, 0);
+...
+- hit = !regexec(regexp, mf2.ptr, 1, ®match, 0);
+----
++
+While `git log -G"regexec\(regexp"` will show this commit, `git log
+-S"regexec\(regexp" --pickaxe-regex` will not (because the number of
+occurrences of that string did not change).
++
+See the 'pickaxe' entry in linkgit:gitdiffcore[7] for more
+information.
--pickaxe-all::
When `-S` or `-G` finds a change, show all the changes in that
in <string>.
--pickaxe-regex::
- Make the <string> not a plain string but an extended POSIX
- regex to match.
+ Treat the <string> given to `-S` as an extended POSIX regular
+ expression to match.
endif::git-format-patch[]
-O<orderfile>::
- Output the patch in the order specified in the
- <orderfile>, which has one shell glob pattern per line.
+ Control the order in which files appear in the output.
+ This overrides the `diff.orderFile` configuration variable
+ (see linkgit:git-config[1]). To cancel `diff.orderFile`,
+ use `-O/dev/null`.
++
+The output order is determined by the order of glob patterns in
+<orderfile>.
+All files with pathnames that match the first pattern are output
+first, all files with pathnames that match the second pattern (but not
+the first) are output next, and so on.
+All files with pathnames that do not match any pattern are output
+last, as if there was an implicit match-all pattern at the end of the
+file.
+If multiple pathnames have the same rank (they match the same pattern
+but no earlier patterns), their output order relative to each other is
+the normal order.
++
+<orderfile> is parsed as follows:
++
+--
+ - Blank lines are ignored, so they can be used as separators for
+ readability.
+
+ - Lines starting with a hash ("`#`") are ignored, so they can be used
+ for comments. Add a backslash ("`\`") to the beginning of the
+ pattern if it starts with a hash.
+
+ - Each other line contains a single pattern.
+--
++
+Patterns have the same syntax and semantics as patterns used for
+fnmantch(3) without the FNM_PATHNAME flag, except a pathname also
+matches a pattern if removing any number of the final pathname
+components matches the pattern. For example, the pattern "`foo*bar`"
+matches "`fooasdfbar`" and "`foo/bar/baz/asdf`" but not "`foobarx`".
ifndef::git-format-patch[]
-R::
differences even if one line has whitespace where the other
line has none.
+--ignore-blank-lines::
+ Ignore changes whose lines are all blank.
+
--inter-hunk-context=<lines>::
Show the context between diff hunks, up to the specified number
of lines, thereby fusing hunks that are close to each other.
+ Defaults to `diff.interHunkContext` or 0 if the config option
+ is unset.
-W::
--function-context::
--ignore-submodules[=<when>]::
Ignore changes to submodules in the diff generation. <when> can be
- either "none", "untracked", "dirty" or "all", which is the default
+ either "none", "untracked", "dirty" or "all", which is the default.
Using "none" will consider the submodule modified when it either contains
untracked or modified files or its HEAD differs from the commit recorded
in the superproject and can be used to override any settings of the
--no-prefix::
Do not show any source or destination prefix.
+--line-prefix=<prefix>::
+ Prepend an additional prefix to every line of output.
+
+--ita-invisible-in-index::
+ By default entries added by "git add -N" appear as an existing
+ empty file in "git diff" and a new file in "git diff --cached".
+ This option makes the entry appear as a new file in "git diff"
+ and non-existent in "git diff --cached". This option could be
+ reverted with `--ita-visible-in-index`. Both options are
+ experimental and could be removed in future.
+
For more detailed explanation on these common options, see also
linkgit:gitdiffcore[7].