log --pretty: do not accept bogus "--prettyshort"

... nor bogus "format.pretty = '=short'".  Both are syntax errors.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/revision.c b/revision.c
index ac057e1..fc66755 100644
--- a/revision.c
+++ b/revision.c
@@ -1197,11 +1197,16 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 				revs->verbose_header = 1;
 				continue;
 			}
-			if (!prefixcmp(arg, "--pretty")) {
+			if (!strcmp(arg, "--pretty")) {
 				revs->verbose_header = 1;
 				get_commit_format(arg+8, revs);
 				continue;
 			}
+			if (!prefixcmp(arg, "--pretty=")) {
+				revs->verbose_header = 1;
+				get_commit_format(arg+9, revs);
+				continue;
+			}
 			if (!strcmp(arg, "--graph")) {
 				revs->topo_order = 1;
 				revs->rewrite_parents = 1;