docs: describe ANSI 256-color mode

peff · gitster · commit 0edad17d6728 · 2014-11-20T10:13:25.000-08:00
Our color specifications have supported the 256-color ANSI
extension for years, but we never documented it.

Signed-off-by: Jeff King &lt;peff@peff.net&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/Documentation/config.txt b/Documentation/config.txt
@@ -825,6 +825,10 @@ accepted are `normal`, `black`, `red`, `green`, `yellow`, `blue`,
 `blink` and `reverse`.  The first color given is the foreground; the
 second is the background.  The position of the attribute, if any,
 doesn't matter.
++
+Colors (foreground and background) may also be given as numbers between
+0 and 255; these use ANSI 256-color mode (but note that not all
+terminals may support this).
 
 color.diff::
 	Whether to use ANSI escape sequences to add color to patches.
