KBD_CMD_NOBELL
case KBD_CMD_NOBELL: /* FALLTHROUGH */
case KBD_CMD_NOBELL:
k->k_ops->docmd(k, KBD_CMD_NOBELL, 0);
(void)(*k->k_ops->docmd)(k, on ? KBD_CMD_BELL : KBD_CMD_NOBELL, 0);
case KBD_CMD_NOBELL: