tty_setctrlchar
tty_setctrlchar(tp, VINTR, tc->t_intrc);
tty_setctrlchar(tp, VQUIT, tc->t_quitc);
tty_setctrlchar(tp, VSTART, tc->t_startc);
tty_setctrlchar(tp, VSTOP, tc->t_stopc);
tty_setctrlchar(tp, VEOF, tc->t_eofc);
tty_setctrlchar(tp, VEOL, tc->t_brkc);
tty_setctrlchar(tp, VEOL2, _POSIX_VDISABLE);
tty_setctrlchar(tp, VSUSP, ltc->t_suspc);
tty_setctrlchar(tp, VDSUSP, ltc->t_dsuspc);
tty_setctrlchar(tp, VREPRINT, ltc->t_rprntc);
tty_setctrlchar(tp, VDISCARD, ltc->t_flushc);
tty_setctrlchar(tp, VWERASE, ltc->t_werasc);
tty_setctrlchar(tp, VLNEXT, ltc->t_lnextc);
void tty_setctrlchar(struct tty *, unsigned /*which*/, unsigned char /*val*/);