commit: prepare get_commit_buffer to handle any repo

diff --git a/builtin/rev-list.c b/builtin/rev-list.c
index c60504891a56088454574297602bc4fcb1343743..cc1b70522f7bcdb77fd33ccd9d9948926b8333ad 100644 (file)
--- a/builtin/rev-list.c
+++ b/builtin/rev-list.c
@@ -493,7 +493,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
        if ((!revs.commits && reflog_walk_empty(revs.reflog_info) &&
             (!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
              !revs.pending.nr) &&
-            !revs.rev_input_given) ||
+            !revs.rev_input_given && !revs.read_from_stdin) ||
            revs.diff)
                usage(rev_list_usage);