color: support "italic" attribute

We already support bold, underline, and similar attributes.
Let's add italic to the mix.  According to the Wikipedia
page on ANSI colors, this attribute is "not widely
supported", but it does seem to work on my xterm.

We don't have to bump the maximum color size because we were
already over-allocating it (but we do adjust the comment
appropriately).

Requested-by: Simon Courtois <scourtois@cubyx.fr>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/color.h b/color.h
index 2d0507ff7e..e6f82cc3eb 100644
--- a/color.h
+++ b/color.h
@@ -16,7 +16,8 @@ struct strbuf;
  *
  * The space for attributes is also slightly overallocated, as
  * the negation for some attributes is the same (e.g., nobold and nodim).
- * We also allocate space for 6 attributes (even though we have only 5).
+ *
+ * We allocate space for 6 attributes.
  */
 #define COLOR_MAXLEN 70