diff: accept color.diff.context as a synonym for "plain"

The term "plain" is a bit ambiguous; let's allow the more specific "context", but keep "plain" around for compatibility. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed May 27, 2015 at 03:22 UTC 74b15bfbf6f7efffa40fda170b3a3cb0218d8651
2 files changed +3 -2
Documentation/config.txt
+2 -1
@@ -870,7 +870,8 @@ command line with the `--color[=<when>]` option.
870 color.diff.<slot>::
871 Use customized color for diff colorization. `<slot>` specifies
872 which part of the patch to use the specified color, and is one
873 - of `plain` (context text), `meta` (metainformation), `frag`
873 + of `context` (context text - `plain` is a historical synonym),
874 + `meta` (metainformation), `frag`
875 (hunk header), 'func' (function in hunk header), `old` (removed lines),
876 `new` (added lines), `commit` (commit headers), or `whitespace`
877 (highlighting whitespace errors). The values of these variables may be
diff.c
+1 -1
@@ -54,7 +54,7 @@ static char diff_colors[][COLOR_MAXLEN] = {
54
55 static int parse_diff_color_slot(const char *var)
56 {
57 - if (!strcasecmp(var, "plain"))
57 + if (!strcasecmp(var, "context") || !strcasecmp(var, "plain"))
58 return DIFF_PLAIN;
59 if (!strcasecmp(var, "meta"))
60 return DIFF_METAINFO;