Merge branch 'mg/diff-uiconfig-doc'

* mg/diff-uiconfig-doc:
config.txt,diff-options.txt: porcelain vs. plumbing for color.diff

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 480dd0a8617ced1f7bf24cda0bf23b7fc2c6c4f3..0c0f54c30e4db1db326aa468bbef90a379f478ad 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -706,9 +706,16 @@ second is the background.  The position of the attribute, if any,
 doesn't matter.
 
 color.diff::
-       When set to `always`, always use colors in patch.
-       When false (or `never`), never.  When set to `true` or `auto`, use
-       colors only when the output is to the terminal. Defaults to false.
+       Whether to use ANSI escape sequences to add color to patches.
+       If this is set to `always`, linkgit:git-diff[1],
+       linkgit:git-log[1], and linkgit:git-show[1] will use color
+       for all patches.  If it is set to `true` or `auto`, those
+       commands will only use color when output is to the terminal.
+       Defaults to false.
++
+This does not affect linkgit:git-format-patch[1] nor the
+'git-diff-{asterisk}' plumbing commands.  Can be overridden on the
+command line with the `--color[=<when>]` option.
 
 color.diff.<slot>::
        Use customized color for diff colorization.  `<slot>` specifies
@@ -794,11 +801,15 @@ color.status.<slot>::
        color.branch.<slot>.
 
 color.ui::
-       When set to `always`, always use colors in all git commands which
-       are capable of colored output. When false (or `never`), never. When
-       set to `true` or `auto`, use colors only when the output is to the
-       terminal. When more specific variables of color.* are set, they always
-       take precedence over this setting. Defaults to false.
+       This variable determines the default value for variables such
+       as `color.diff` and `color.grep` that control the use of color
+       per command family. Its scope will expand as more commands learn
+       configuration to set a default for the `--color` option.  Set it
+       to `always` if you want all output not intended for machine
+       consumption to use color, to `true` or `auto` if you want such
+       output to use color when written to the terminal, or to `false` or
+       `never` if you prefer git commands not to use color unless enabled
+       explicitly with some other configuration or the `--color` option.
 
 commit.status::
        A boolean to enable/disable inclusion of status information in the

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 23b605f9dba22c8c05f8b70abf952e981b57cd58..9ca565d7087109e1bba4c93b30d831f0b0883f22 100644 (file)
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -124,12 +124,19 @@ any of those replacements occurred.
 
 --color[=<when>]::
        Show colored diff.
-       The value must be always (the default), never, or auto.
+       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.
-       Same as `--color=never`.
+       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`.
 
 --word-diff[=<mode>]::
        Show a word diff, using the <mode> to delimit changed words.