log-tree: allow to customize 'grafted' color

Commit 76f5df3 (log: decorate grafted commits with "grafted" -
2011-08-18) lets us decorate grafted commits but I forgot about the
color.decorate.* config.

Signed-off-by: Nguyễn Thái Ngọc Duy <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pclouds

Documentation/config.txt

@@ -1162,7 +1162,8 @@ color.diff.<slot>::
 color.decorate.<slot>::
 	Use customized color for 'git log --decorate' output.  `<slot>` is one
 	of `branch`, `remoteBranch`, `tag`, `stash` or `HEAD` for local
-	branches, remote-tracking branches, tags, stash and HEAD, respectively.
+	branches, remote-tracking branches, tags, stash and HEAD, respectively
+	and `grafted` for grafted commits.
 
 color.grep::
 	When set to `always`, always highlight matches.  When `false` (or

log-tree.c

@@ -34,6 +34,7 @@ static const char *color_decorate_slots[] = {
 	[DECORATION_REF_TAG]	= "tag",
 	[DECORATION_REF_STASH]	= "stash",
 	[DECORATION_REF_HEAD]	= "HEAD",
+	[DECORATION_GRAFTED]	= "grafted",
 };
 
 static const char *decorate_get_color(int decorate_use_color, enum decoration_type ix)