bsd/kern/tty.c

76  *	  case for EXTPROC?
78  *	o Move EXTPROC and/or PENDIN to t_state?
576 	if (!ISSET(lflag, EXTPROC)) {
688 	if (!ISSET(tp->t_lflag, EXTPROC) && ISSET(lflag, ICANON)) {
906 	    ISSET(oflag, OXTABS) && !ISSET(tp->t_lflag, EXTPROC)) {
1318 		 * Make the EXTPROC bit read only.
1320 		if (ISSET(tp->t_lflag, EXTPROC))
1321 			SET(t->c_lflag, EXTPROC);
1323 			CLR(t->c_lflag, EXTPROC);
2492 	if (!ISSET(tp->t_lflag, ECHO) || ISSET(tp->t_lflag, EXTPROC))
2633 	    ISSET(tp->t_lflag, EXTPROC))