parseopt: make usage optional
commit49b6180252000e37ec47ccb4156240ed625949ed
authorRené Scharfe <rene.scharfe@lsrfire.ath.cx>
Sun, 8 Mar 2009 18:16:58 +0000 (8 19:16 +0100)
committerJunio C Hamano <gitster@pobox.com>
Sun, 8 Mar 2009 20:36:41 +0000 (8 13:36 -0700)
treea4aa47b6c28e7589344e8fa4d52676a7bc3a1694
parentb92891f9783ae197bb84b90d8404ad08c3875fa1
parseopt: make usage optional

Allow usagestr to be NULL and don't display any help screen in
this case.  This is useful to implement incremental parsers.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
parse-options.c