TS_CONS25KEYS
t->t_stateflags |= TS_CONS25KEYS;
if ((t->t_stateflags & (TS_CONS25 | TS_CONS25KEYS)) ==
(TS_CONS25 | TS_CONS25KEYS))
t->t_stateflags &= TS_8BIT | TS_CONS25 | TS_CONS25KEYS;