color: add the meta color GIT_COLOR_REVERSE

This "color" simply reverts background and foreground. It will be used
in the upcoming "dual color" mode of `git range-diff`, where we will
reverse colors for the -/+ markers and the fragment headers of the
"outer" diff.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/color.h b/color.h
index 5b744e1bc68617d196bdd864042e738cb4d75ebe..33e786342a7747cb006757ed4ffabd765fdc285c 100644 (file)
--- a/color.h
+++ b/color.h
@@ -44,6 +44,7 @@ struct strbuf;
 #define GIT_COLOR_BG_CYAN      "\033[46m"
 #define GIT_COLOR_FAINT                "\033[2m"
 #define GIT_COLOR_FAINT_ITALIC "\033[2;3m"
+#define GIT_COLOR_REVERSE      "\033[7m"
 
 /* A special value meaning "no color selected" */
 #define GIT_COLOR_NIL "NIL"