Avoid accessing non-tag refs in git-describe unless --all is requested
commit8a5a1884e93564cb1f46a73184d083a5181d573b
authorShawn O. Pearce <spearce@spearce.org>
Sun, 24 Feb 2008 08:07:28 +0000 (24 03:07 -0500)
committerJunio C Hamano <gitster@pobox.com>
Sun, 24 Feb 2008 18:01:24 +0000 (24 10:01 -0800)
tree7c702b2f8515acfc4e92e3753784ff0455036f19
parentfeededd05b551a02a95fe2a736e9d5f688b86119
Avoid accessing non-tag refs in git-describe unless --all is requested

If we aren't going to use a ref there is no reason for us to open
its object from the object database.  This avoids opening any of
the head commits reachable from refs/heads/ unless they are also
reachable through the commit we have been asked to describe and
we need to walk through it to find a tag.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin-describe.c