if (!(f & f_noinput) && optind == argc) {
selbuf_init(&bu, &sel, STDIN_FILENO, uline, &bu);
selbuf_init(&bs, &sel, fd, sline, &bs);
if (!(f & f_noinput) && optind == argc) {
selbuf_init(&bu, &sel, STDIN_FILENO, uline, &bu);
selbuf_init(&bs, &sel, fd, sline, &bs);