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-rw-r--r--builtin/grep.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/builtin/grep.c b/builtin/grep.c
index 0e1b6c860e..8025964987 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -823,6 +823,8 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
struct object *object = parse_object(sha1);
if (!object)
die(_("bad object %s"), arg);
+ if (!seen_dashdash)
+ verify_non_filename(prefix, arg);
add_object_array(object, arg, &list);
continue;
}