of the `--diff-filter` option on what the status letters mean.
--submodule[=<format>]::
- Chose the output format for submodule differences. <format> can be one of
- 'short' and 'log'. 'short' just shows pairs of commit names, this format
- is used when this option is not given. 'log' is the default value for this
- option and lists the commits in that commit range like the 'summary'
- option of linkgit:git-submodule[1] does.
+ 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.
---color::
+--color[=<when>]::
Show colored diff.
+ The value must be `always` (the default for `<when>`), `never`, or `auto`.
+ The default value is `never`.
+ifdef::git-diff[]
+ It can be changed by the `color.ui` and `color.diff`
+ configuration settings.
+endif::git-diff[]
--no-color::
- Turn off colored diff, even when the configuration file
- gives the default to color output.
+ Turn off colored diff.
+ifdef::git-diff[]
+ This can be used to override configuration settings.
+endif::git-diff[]
+ It is the same as `--color=never`.
---color-words[=<regex>]::
- Show colored word diff, i.e., color words which have changed.
- By default, words are separated by whitespace.
+--word-diff[=<mode>]::
+ Show a word diff, using the <mode> to delimit changed words.
+ By default, words are delimited by whitespace; see
+ `--word-diff-regex` below. The <mode> defaults to 'plain', and
+ must be one of:
+
-When a <regex> is specified, every non-overlapping match of the
+--
+color::
+ Highlight changed words using only colors. Implies `--color`.
+plain::
+ Show words as `[-removed-]` and `{+added+}`. Makes no
+ attempts to escape the delimiters if they appear in the input,
+ so the output may be ambiguous.
+porcelain::
+ Use a special line-based format intended for script
+ consumption. Added/removed/unchanged runs are printed in the
+ usual unified diff format, starting with a `+`/`-`/` `
+ character at the beginning of the line and extending to the
+ end of the line. Newlines in the input are represented by a
+ tilde `~` on a line of its own.
+none::
+ Disable word diff again.
+--
++
+Note that despite the name of the first mode, color is used to
+highlight the changed parts in all modes if enabled.
+
+--word-diff-regex=<regex>::
+ Use <regex> to decide what a word is, instead of considering
+ runs of non-whitespace to be a word. Also implies
+ `--word-diff` unless it was already enabled.
++
+Every non-overlapping match of the
<regex> is considered a word. Anything between these matches is
considered whitespace and ignored(!) for the purposes of finding
differences. You may want to append `|[^[:space:]]` to your regular