whitespace errors). The values of these variables may be specified as
in color.branch.<slot>.
+color.grep::
+ When set to `always`, always highlight matches. When `false` (or
+ `never`), never. When set to `true` or `auto`, use color only
+ when the output is written to the terminal. Defaults to `false`.
+
+color.grep.external::
+ The string value of this variable is passed to an external 'grep'
+ command as a command line option if match highlighting is turned
+ on. If set to an empty string, no option is passed at all,
+ turning off coloring for external 'grep' calls; this is the default.
+ For GNU grep, set it to `--color=always` to highlight matches even
+ when a pager is used.
+
+color.grep.match::
+ Use customized color for matches. The value of this variable
+ may be specified as in color.branch.<slot>. It is passed using
+ the environment variables 'GREP_COLOR' and 'GREP_COLORS' when
+ calling an external 'grep'.
+
color.interactive::
When set to `always`, always use colors for interactive prompts
and displays (such as those used by "git-add --interactive").