X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=tg.sh;h=ccb40cdea444c7d77d58c86fbeb275335e0da372;hb=991921b9e0009b6127e0c3d996c682bee555b99b;hp=8c23d26b9a62ddcc1869bb70299862c32edd4403;hpb=2ea19b66e94fa7ad28278277bda096394181a9d1;p=topgit.git

diff --git a/tg.sh b/tg.sh
index 8c23d26..ccb40cd 100644
--- a/tg.sh
+++ b/tg.sh
@@ -77,7 +77,7 @@ measure_branch()
 # Whether B1 is a superset of B2.
 branch_contains()
 {
-	[ -z "$(git rev-list ^"$1" "$2" --)" ]
+	[ -z "$(git rev-list --max-count=1 ^"$1" "$2" --)" ]
 }
 
 # ref_exists REF