Fix "--abbrev=xyz" for revision listing

The revision argument parsing was happily parsing "--abbrev", but it
didn't parse "--abbrev=<n>".

Which was hidden by the fact that the diff options _would_ parse
--abbrev=<n>, so it would actually silently parse it, it just
wouldn't use it for the same things that a plain "--abbrev" was
used for.

Which seems a bit insane.

With this patch, if you do "git log --abbrev=10" it will abbreviate the
merge parent commit ID's to ten hex characters, which was probably what
you expected.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/revision.c b/revision.c
index 2294b16..42c077a 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -733,6 +733,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                revs->abbrev = DEFAULT_ABBREV;
                                continue;
                        }
+                       if (!strncmp(arg, "--abbrev=", 9)) {
+                               revs->abbrev = strtoul(arg + 9, NULL, 10);
+                               if (revs->abbrev < MINIMUM_ABBREV)
+                                       revs->abbrev = MINIMUM_ABBREV;
+                               else if (revs->abbrev > 40)
+                                       revs->abbrev = 40;
+                               continue;
+                       }
                        if (!strcmp(arg, "--abbrev-commit")) {
                                revs->abbrev_commit = 1;
                                continue;