query_string = query_string_from_args (notmuch, argc - opt_index, argv + opt_index);
if (query_string == NULL) {
fprintf (stderr, "Out of memory\n");
query_string = query_string_from_args (notmuch, argc - opt_index, argv + opt_index);
if (query_string == NULL) {
fprintf (stderr, "Out of memory\n");