git-mergetool: properly handle "git mergetool -- filename"

Like many git commands, git-mergetool allows "--" to signal
the end of option processing.  This adds a missing "shift"
statement so that this is correctly handled.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-mergetool.sh b/git-mergetool.sh
index 94187c306ccb05d977f2bb35e81828130ab49a61..d4078a6affd9b4c1fa52e6dba0fe6c151fa452dc 100755 (executable)
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -296,6 +296,7 @@ do
            esac
            ;;
        --)
+           shift
            break
            ;;
        -*)