filter-branch: add [--] to usage

Signed-off-by: Andreas Heiduk <asheiduk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index 2758ae5..3a74602 100755 (executable)
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -87,7 +87,7 @@ USAGE="[--setup <command>] [--env-filter <command>]
        [--commit-filter <command>] [--tag-name-filter <command>]
        [--subdirectory-filter <directory>] [--original <namespace>]
        [-d <directory>] [-f | --force]
-       [<rev-list options>...]"
+       [--] [<rev-list options>...]"
 
 OPTIONS_SPEC=
 . git-sh-setup