xref: /netbsd-src/lib/libedit/tty.c (revision daf6c4152fcddc27c445489775ed1f66ab4ea9a9)
1 /*	$NetBSD: tty.c,v 1.35 2011/01/28 03:41:52 christos Exp $	*/
2 
3 /*-
4  * Copyright (c) 1992, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Christos Zoulas of Cornell University.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #include "config.h"
36 #if !defined(lint) && !defined(SCCSID)
37 #if 0
38 static char sccsid[] = "@(#)tty.c	8.1 (Berkeley) 6/4/93";
39 #else
40 __RCSID("$NetBSD: tty.c,v 1.35 2011/01/28 03:41:52 christos Exp $");
41 #endif
42 #endif /* not lint && not SCCSID */
43 
44 /*
45  * tty.c: tty interface stuff
46  */
47 #include <assert.h>
48 #include <errno.h>
49 #include <unistd.h>	/* for isatty */
50 #include <strings.h>	/* for ffs */
51 #include "el.h"
52 #include "tty.h"
53 
54 typedef struct ttymodes_t {
55 	const char *m_name;
56 	unsigned int m_value;
57 	int m_type;
58 }          ttymodes_t;
59 
60 typedef struct ttymap_t {
61 	Int nch, och;		/* Internal and termio rep of chars */
62 	el_action_t bind[3];	/* emacs, vi, and vi-cmd */
63 } ttymap_t;
64 
65 
66 private const ttyperm_t ttyperm = {
67 	{
68 		{"iflag:", ICRNL, (INLCR | IGNCR)},
69 		{"oflag:", (OPOST | ONLCR), ONLRET},
70 		{"cflag:", 0, 0},
71 		{"lflag:", (ISIG | ICANON | ECHO | ECHOE | ECHOCTL | IEXTEN),
72 		(NOFLSH | ECHONL | EXTPROC | FLUSHO)},
73 		{"chars:", 0, 0},
74 	},
75 	{
76 		{"iflag:", (INLCR | ICRNL), IGNCR},
77 		{"oflag:", (OPOST | ONLCR), ONLRET},
78 		{"cflag:", 0, 0},
79 		{"lflag:", ISIG,
80 		(NOFLSH | ICANON | ECHO | ECHOK | ECHONL | EXTPROC | IEXTEN | FLUSHO)},
81 		{"chars:", (C_SH(C_MIN) | C_SH(C_TIME) | C_SH(C_SWTCH) | C_SH(C_DSWTCH) |
82 			    C_SH(C_SUSP) | C_SH(C_DSUSP) | C_SH(C_EOL) | C_SH(C_DISCARD) |
83 		    C_SH(C_PGOFF) | C_SH(C_PAGE) | C_SH(C_STATUS)), 0}
84 	},
85 	{
86 		{"iflag:", 0, IXON | IXOFF | INLCR | ICRNL},
87 		{"oflag:", 0, 0},
88 		{"cflag:", 0, 0},
89 		{"lflag:", 0, ISIG | IEXTEN},
90 		{"chars:", 0, 0},
91 	}
92 };
93 
94 private const ttychar_t ttychar = {
95 	{
96 		CINTR, CQUIT, CERASE, CKILL,
97 		CEOF, CEOL, CEOL2, CSWTCH,
98 		CDSWTCH, CERASE2, CSTART, CSTOP,
99 		CWERASE, CSUSP, CDSUSP, CREPRINT,
100 		CDISCARD, CLNEXT, CSTATUS, CPAGE,
101 		CPGOFF, CKILL2, CBRK, CMIN,
102 		CTIME
103 	},
104 	{
105 		CINTR, CQUIT, CERASE, CKILL,
106 		_POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE,
107 		_POSIX_VDISABLE, CERASE2, CSTART, CSTOP,
108 		_POSIX_VDISABLE, CSUSP, _POSIX_VDISABLE, _POSIX_VDISABLE,
109 		CDISCARD, _POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE,
110 		_POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE, 1,
111 		0
112 	},
113 	{
114 		0, 0, 0, 0,
115 		0, 0, 0, 0,
116 		0, 0, 0, 0,
117 		0, 0, 0, 0,
118 		0, 0, 0, 0,
119 		0, 0, 0, 0,
120 		0
121 	}
122 };
123 
124 private const ttymap_t tty_map[] = {
125 #ifdef VERASE
126 	{C_ERASE, VERASE,
127 	{EM_DELETE_PREV_CHAR, VI_DELETE_PREV_CHAR, ED_PREV_CHAR}},
128 #endif /* VERASE */
129 #ifdef VERASE2
130 	{C_ERASE2, VERASE2,
131 	{EM_DELETE_PREV_CHAR, VI_DELETE_PREV_CHAR, ED_PREV_CHAR}},
132 #endif /* VERASE2 */
133 #ifdef VKILL
134 	{C_KILL, VKILL,
135 	{EM_KILL_LINE, VI_KILL_LINE_PREV, ED_UNASSIGNED}},
136 #endif /* VKILL */
137 #ifdef VKILL2
138 	{C_KILL2, VKILL2,
139 	{EM_KILL_LINE, VI_KILL_LINE_PREV, ED_UNASSIGNED}},
140 #endif /* VKILL2 */
141 #ifdef VEOF
142 	{C_EOF, VEOF,
143 	{EM_DELETE_OR_LIST, VI_LIST_OR_EOF, ED_UNASSIGNED}},
144 #endif /* VEOF */
145 #ifdef VWERASE
146 	{C_WERASE, VWERASE,
147 	{ED_DELETE_PREV_WORD, ED_DELETE_PREV_WORD, ED_PREV_WORD}},
148 #endif /* VWERASE */
149 #ifdef VREPRINT
150 	{C_REPRINT, VREPRINT,
151 	{ED_REDISPLAY, ED_INSERT, ED_REDISPLAY}},
152 #endif /* VREPRINT */
153 #ifdef VLNEXT
154 	{C_LNEXT, VLNEXT,
155 	{ED_QUOTED_INSERT, ED_QUOTED_INSERT, ED_UNASSIGNED}},
156 #endif /* VLNEXT */
157 	{-1, -1,
158 	{ED_UNASSIGNED, ED_UNASSIGNED, ED_UNASSIGNED}}
159 };
160 
161 private const ttymodes_t ttymodes[] = {
162 #ifdef	IGNBRK
163 	{"ignbrk", IGNBRK, MD_INP},
164 #endif /* IGNBRK */
165 #ifdef	BRKINT
166 	{"brkint", BRKINT, MD_INP},
167 #endif /* BRKINT */
168 #ifdef	IGNPAR
169 	{"ignpar", IGNPAR, MD_INP},
170 #endif /* IGNPAR */
171 #ifdef	PARMRK
172 	{"parmrk", PARMRK, MD_INP},
173 #endif /* PARMRK */
174 #ifdef	INPCK
175 	{"inpck", INPCK, MD_INP},
176 #endif /* INPCK */
177 #ifdef	ISTRIP
178 	{"istrip", ISTRIP, MD_INP},
179 #endif /* ISTRIP */
180 #ifdef	INLCR
181 	{"inlcr", INLCR, MD_INP},
182 #endif /* INLCR */
183 #ifdef	IGNCR
184 	{"igncr", IGNCR, MD_INP},
185 #endif /* IGNCR */
186 #ifdef	ICRNL
187 	{"icrnl", ICRNL, MD_INP},
188 #endif /* ICRNL */
189 #ifdef	IUCLC
190 	{"iuclc", IUCLC, MD_INP},
191 #endif /* IUCLC */
192 #ifdef	IXON
193 	{"ixon", IXON, MD_INP},
194 #endif /* IXON */
195 #ifdef	IXANY
196 	{"ixany", IXANY, MD_INP},
197 #endif /* IXANY */
198 #ifdef	IXOFF
199 	{"ixoff", IXOFF, MD_INP},
200 #endif /* IXOFF */
201 #ifdef  IMAXBEL
202 	{"imaxbel", IMAXBEL, MD_INP},
203 #endif /* IMAXBEL */
204 
205 #ifdef	OPOST
206 	{"opost", OPOST, MD_OUT},
207 #endif /* OPOST */
208 #ifdef	OLCUC
209 	{"olcuc", OLCUC, MD_OUT},
210 #endif /* OLCUC */
211 #ifdef	ONLCR
212 	{"onlcr", ONLCR, MD_OUT},
213 #endif /* ONLCR */
214 #ifdef	OCRNL
215 	{"ocrnl", OCRNL, MD_OUT},
216 #endif /* OCRNL */
217 #ifdef	ONOCR
218 	{"onocr", ONOCR, MD_OUT},
219 #endif /* ONOCR */
220 #ifdef ONOEOT
221 	{"onoeot", ONOEOT, MD_OUT},
222 #endif /* ONOEOT */
223 #ifdef	ONLRET
224 	{"onlret", ONLRET, MD_OUT},
225 #endif /* ONLRET */
226 #ifdef	OFILL
227 	{"ofill", OFILL, MD_OUT},
228 #endif /* OFILL */
229 #ifdef	OFDEL
230 	{"ofdel", OFDEL, MD_OUT},
231 #endif /* OFDEL */
232 #ifdef	NLDLY
233 	{"nldly", NLDLY, MD_OUT},
234 #endif /* NLDLY */
235 #ifdef	CRDLY
236 	{"crdly", CRDLY, MD_OUT},
237 #endif /* CRDLY */
238 #ifdef	TABDLY
239 	{"tabdly", TABDLY, MD_OUT},
240 #endif /* TABDLY */
241 #ifdef	XTABS
242 	{"xtabs", XTABS, MD_OUT},
243 #endif /* XTABS */
244 #ifdef	BSDLY
245 	{"bsdly", BSDLY, MD_OUT},
246 #endif /* BSDLY */
247 #ifdef	VTDLY
248 	{"vtdly", VTDLY, MD_OUT},
249 #endif /* VTDLY */
250 #ifdef	FFDLY
251 	{"ffdly", FFDLY, MD_OUT},
252 #endif /* FFDLY */
253 #ifdef	PAGEOUT
254 	{"pageout", PAGEOUT, MD_OUT},
255 #endif /* PAGEOUT */
256 #ifdef	WRAP
257 	{"wrap", WRAP, MD_OUT},
258 #endif /* WRAP */
259 
260 #ifdef	CIGNORE
261 	{"cignore", CIGNORE, MD_CTL},
262 #endif /* CBAUD */
263 #ifdef	CBAUD
264 	{"cbaud", CBAUD, MD_CTL},
265 #endif /* CBAUD */
266 #ifdef	CSTOPB
267 	{"cstopb", CSTOPB, MD_CTL},
268 #endif /* CSTOPB */
269 #ifdef	CREAD
270 	{"cread", CREAD, MD_CTL},
271 #endif /* CREAD */
272 #ifdef	PARENB
273 	{"parenb", PARENB, MD_CTL},
274 #endif /* PARENB */
275 #ifdef	PARODD
276 	{"parodd", PARODD, MD_CTL},
277 #endif /* PARODD */
278 #ifdef	HUPCL
279 	{"hupcl", HUPCL, MD_CTL},
280 #endif /* HUPCL */
281 #ifdef	CLOCAL
282 	{"clocal", CLOCAL, MD_CTL},
283 #endif /* CLOCAL */
284 #ifdef	LOBLK
285 	{"loblk", LOBLK, MD_CTL},
286 #endif /* LOBLK */
287 #ifdef	CIBAUD
288 	{"cibaud", CIBAUD, MD_CTL},
289 #endif /* CIBAUD */
290 #ifdef CRTSCTS
291 #ifdef CCTS_OFLOW
292 	{"ccts_oflow", CCTS_OFLOW, MD_CTL},
293 #else
294 	{"crtscts", CRTSCTS, MD_CTL},
295 #endif /* CCTS_OFLOW */
296 #endif /* CRTSCTS */
297 #ifdef CRTS_IFLOW
298 	{"crts_iflow", CRTS_IFLOW, MD_CTL},
299 #endif /* CRTS_IFLOW */
300 #ifdef CDTRCTS
301 	{"cdtrcts", CDTRCTS, MD_CTL},
302 #endif /* CDTRCTS */
303 #ifdef MDMBUF
304 	{"mdmbuf", MDMBUF, MD_CTL},
305 #endif /* MDMBUF */
306 #ifdef RCV1EN
307 	{"rcv1en", RCV1EN, MD_CTL},
308 #endif /* RCV1EN */
309 #ifdef XMT1EN
310 	{"xmt1en", XMT1EN, MD_CTL},
311 #endif /* XMT1EN */
312 
313 #ifdef	ISIG
314 	{"isig", ISIG, MD_LIN},
315 #endif /* ISIG */
316 #ifdef	ICANON
317 	{"icanon", ICANON, MD_LIN},
318 #endif /* ICANON */
319 #ifdef	XCASE
320 	{"xcase", XCASE, MD_LIN},
321 #endif /* XCASE */
322 #ifdef	ECHO
323 	{"echo", ECHO, MD_LIN},
324 #endif /* ECHO */
325 #ifdef	ECHOE
326 	{"echoe", ECHOE, MD_LIN},
327 #endif /* ECHOE */
328 #ifdef	ECHOK
329 	{"echok", ECHOK, MD_LIN},
330 #endif /* ECHOK */
331 #ifdef	ECHONL
332 	{"echonl", ECHONL, MD_LIN},
333 #endif /* ECHONL */
334 #ifdef	NOFLSH
335 	{"noflsh", NOFLSH, MD_LIN},
336 #endif /* NOFLSH */
337 #ifdef	TOSTOP
338 	{"tostop", TOSTOP, MD_LIN},
339 #endif /* TOSTOP */
340 #ifdef	ECHOCTL
341 	{"echoctl", ECHOCTL, MD_LIN},
342 #endif /* ECHOCTL */
343 #ifdef	ECHOPRT
344 	{"echoprt", ECHOPRT, MD_LIN},
345 #endif /* ECHOPRT */
346 #ifdef	ECHOKE
347 	{"echoke", ECHOKE, MD_LIN},
348 #endif /* ECHOKE */
349 #ifdef	DEFECHO
350 	{"defecho", DEFECHO, MD_LIN},
351 #endif /* DEFECHO */
352 #ifdef	FLUSHO
353 	{"flusho", FLUSHO, MD_LIN},
354 #endif /* FLUSHO */
355 #ifdef	PENDIN
356 	{"pendin", PENDIN, MD_LIN},
357 #endif /* PENDIN */
358 #ifdef	IEXTEN
359 	{"iexten", IEXTEN, MD_LIN},
360 #endif /* IEXTEN */
361 #ifdef	NOKERNINFO
362 	{"nokerninfo", NOKERNINFO, MD_LIN},
363 #endif /* NOKERNINFO */
364 #ifdef	ALTWERASE
365 	{"altwerase", ALTWERASE, MD_LIN},
366 #endif /* ALTWERASE */
367 #ifdef	EXTPROC
368 	{"extproc", EXTPROC, MD_LIN},
369 #endif /* EXTPROC */
370 
371 #if defined(VINTR)
372 	{"intr", C_SH(C_INTR), MD_CHAR},
373 #endif /* VINTR */
374 #if defined(VQUIT)
375 	{"quit", C_SH(C_QUIT), MD_CHAR},
376 #endif /* VQUIT */
377 #if defined(VERASE)
378 	{"erase", C_SH(C_ERASE), MD_CHAR},
379 #endif /* VERASE */
380 #if defined(VKILL)
381 	{"kill", C_SH(C_KILL), MD_CHAR},
382 #endif /* VKILL */
383 #if defined(VEOF)
384 	{"eof", C_SH(C_EOF), MD_CHAR},
385 #endif /* VEOF */
386 #if defined(VEOL)
387 	{"eol", C_SH(C_EOL), MD_CHAR},
388 #endif /* VEOL */
389 #if defined(VEOL2)
390 	{"eol2", C_SH(C_EOL2), MD_CHAR},
391 #endif /* VEOL2 */
392 #if defined(VSWTCH)
393 	{"swtch", C_SH(C_SWTCH), MD_CHAR},
394 #endif /* VSWTCH */
395 #if defined(VDSWTCH)
396 	{"dswtch", C_SH(C_DSWTCH), MD_CHAR},
397 #endif /* VDSWTCH */
398 #if defined(VERASE2)
399 	{"erase2", C_SH(C_ERASE2), MD_CHAR},
400 #endif /* VERASE2 */
401 #if defined(VSTART)
402 	{"start", C_SH(C_START), MD_CHAR},
403 #endif /* VSTART */
404 #if defined(VSTOP)
405 	{"stop", C_SH(C_STOP), MD_CHAR},
406 #endif /* VSTOP */
407 #if defined(VWERASE)
408 	{"werase", C_SH(C_WERASE), MD_CHAR},
409 #endif /* VWERASE */
410 #if defined(VSUSP)
411 	{"susp", C_SH(C_SUSP), MD_CHAR},
412 #endif /* VSUSP */
413 #if defined(VDSUSP)
414 	{"dsusp", C_SH(C_DSUSP), MD_CHAR},
415 #endif /* VDSUSP */
416 #if defined(VREPRINT)
417 	{"reprint", C_SH(C_REPRINT), MD_CHAR},
418 #endif /* VREPRINT */
419 #if defined(VDISCARD)
420 	{"discard", C_SH(C_DISCARD), MD_CHAR},
421 #endif /* VDISCARD */
422 #if defined(VLNEXT)
423 	{"lnext", C_SH(C_LNEXT), MD_CHAR},
424 #endif /* VLNEXT */
425 #if defined(VSTATUS)
426 	{"status", C_SH(C_STATUS), MD_CHAR},
427 #endif /* VSTATUS */
428 #if defined(VPAGE)
429 	{"page", C_SH(C_PAGE), MD_CHAR},
430 #endif /* VPAGE */
431 #if defined(VPGOFF)
432 	{"pgoff", C_SH(C_PGOFF), MD_CHAR},
433 #endif /* VPGOFF */
434 #if defined(VKILL2)
435 	{"kill2", C_SH(C_KILL2), MD_CHAR},
436 #endif /* VKILL2 */
437 #if defined(VBRK)
438 	{"brk", C_SH(C_BRK), MD_CHAR},
439 #endif /* VBRK */
440 #if defined(VMIN)
441 	{"min", C_SH(C_MIN), MD_CHAR},
442 #endif /* VMIN */
443 #if defined(VTIME)
444 	{"time", C_SH(C_TIME), MD_CHAR},
445 #endif /* VTIME */
446 	{NULL, 0, -1},
447 };
448 
449 
450 
451 #define	tty__gettabs(td)	((((td)->c_oflag & TAB3) == TAB3) ? 0 : 1)
452 #define	tty__geteightbit(td)	(((td)->c_cflag & CSIZE) == CS8)
453 #define	tty__cooked_mode(td)	((td)->c_lflag & ICANON)
454 
455 private int	tty_getty(EditLine *, struct termios *);
456 private int	tty_setty(EditLine *, int, const struct termios *);
457 private int	tty__getcharindex(int);
458 private void	tty__getchar(struct termios *, unsigned char *);
459 private void	tty__setchar(struct termios *, unsigned char *);
460 private speed_t	tty__getspeed(struct termios *);
461 private int	tty_setup(EditLine *);
462 
463 #define	t_qu	t_ts
464 
465 /* tty_getty():
466  *	Wrapper for tcgetattr to handle EINTR
467  */
468 private int
469 tty_getty(EditLine *el, struct termios *t)
470 {
471 	int rv;
472 	while ((rv = tcgetattr(el->el_infd, t)) == -1 && errno == EINTR)
473 		continue;
474 	return rv;
475 }
476 
477 /* tty_setty():
478  *	Wrapper for tcsetattr to handle EINTR
479  */
480 private int
481 tty_setty(EditLine *el, int action, const struct termios *t)
482 {
483 	int rv;
484 	while ((rv = tcsetattr(el->el_infd, action, t)) == -1 && errno == EINTR)
485 		continue;
486 	return rv;
487 }
488 
489 /* tty_setup():
490  *	Get the tty parameters and initialize the editing state
491  */
492 private int
493 tty_setup(EditLine *el)
494 {
495 	int rst = 1;
496 
497 	if (el->el_flags & EDIT_DISABLED)
498 		return (0);
499 
500 	if (!isatty(el->el_outfd)) {
501 #ifdef DEBUG_TTY
502 		(void) fprintf(el->el_errfile,
503 		    "tty_setup: isatty: %s\n", strerror(errno));
504 #endif /* DEBUG_TTY */
505 		return (-1);
506 	}
507 	if (tty_getty(el, &el->el_tty.t_ed) == -1) {
508 #ifdef DEBUG_TTY
509 		(void) fprintf(el->el_errfile,
510 		    "tty_setup: tty_getty: %s\n", strerror(errno));
511 #endif /* DEBUG_TTY */
512 		return (-1);
513 	}
514 	el->el_tty.t_ts = el->el_tty.t_ex = el->el_tty.t_ed;
515 
516 	el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ex);
517 	el->el_tty.t_tabs = tty__gettabs(&el->el_tty.t_ex);
518 	el->el_tty.t_eight = tty__geteightbit(&el->el_tty.t_ex);
519 
520 	el->el_tty.t_ex.c_iflag &= ~el->el_tty.t_t[EX_IO][MD_INP].t_clrmask;
521 	el->el_tty.t_ex.c_iflag |= el->el_tty.t_t[EX_IO][MD_INP].t_setmask;
522 
523 	el->el_tty.t_ex.c_oflag &= ~el->el_tty.t_t[EX_IO][MD_OUT].t_clrmask;
524 	el->el_tty.t_ex.c_oflag |= el->el_tty.t_t[EX_IO][MD_OUT].t_setmask;
525 
526 	el->el_tty.t_ex.c_cflag &= ~el->el_tty.t_t[EX_IO][MD_CTL].t_clrmask;
527 	el->el_tty.t_ex.c_cflag |= el->el_tty.t_t[EX_IO][MD_CTL].t_setmask;
528 
529 	el->el_tty.t_ex.c_lflag &= ~el->el_tty.t_t[EX_IO][MD_LIN].t_clrmask;
530 	el->el_tty.t_ex.c_lflag |= el->el_tty.t_t[EX_IO][MD_LIN].t_setmask;
531 
532 	/*
533          * Reset the tty chars to reasonable defaults
534          * If they are disabled, then enable them.
535          */
536 	if (rst) {
537 		if (tty__cooked_mode(&el->el_tty.t_ts)) {
538 			tty__getchar(&el->el_tty.t_ts, el->el_tty.t_c[TS_IO]);
539 			/*
540 	                 * Don't affect CMIN and CTIME for the editor mode
541 	                 */
542 			for (rst = 0; rst < C_NCC - 2; rst++)
543 				if (el->el_tty.t_c[TS_IO][rst] !=
544 				      el->el_tty.t_vdisable
545 				    && el->el_tty.t_c[ED_IO][rst] !=
546 				      el->el_tty.t_vdisable)
547 					el->el_tty.t_c[ED_IO][rst] =
548 					    el->el_tty.t_c[TS_IO][rst];
549 			for (rst = 0; rst < C_NCC; rst++)
550 				if (el->el_tty.t_c[TS_IO][rst] !=
551 				    el->el_tty.t_vdisable)
552 					el->el_tty.t_c[EX_IO][rst] =
553 					    el->el_tty.t_c[TS_IO][rst];
554 		}
555 		tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
556 		if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ex) == -1) {
557 #ifdef DEBUG_TTY
558 			(void) fprintf(el->el_errfile,
559 			    "tty_setup: tty_setty: %s\n",
560 			    strerror(errno));
561 #endif /* DEBUG_TTY */
562 			return (-1);
563 		}
564 	}
565 #ifdef notdef
566 	else
567 		tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
568 #endif
569 
570 	el->el_tty.t_ed.c_iflag &= ~el->el_tty.t_t[ED_IO][MD_INP].t_clrmask;
571 	el->el_tty.t_ed.c_iflag |= el->el_tty.t_t[ED_IO][MD_INP].t_setmask;
572 
573 	el->el_tty.t_ed.c_oflag &= ~el->el_tty.t_t[ED_IO][MD_OUT].t_clrmask;
574 	el->el_tty.t_ed.c_oflag |= el->el_tty.t_t[ED_IO][MD_OUT].t_setmask;
575 
576 	el->el_tty.t_ed.c_cflag &= ~el->el_tty.t_t[ED_IO][MD_CTL].t_clrmask;
577 	el->el_tty.t_ed.c_cflag |= el->el_tty.t_t[ED_IO][MD_CTL].t_setmask;
578 
579 	el->el_tty.t_ed.c_lflag &= ~el->el_tty.t_t[ED_IO][MD_LIN].t_clrmask;
580 	el->el_tty.t_ed.c_lflag |= el->el_tty.t_t[ED_IO][MD_LIN].t_setmask;
581 
582 	tty__setchar(&el->el_tty.t_ed, el->el_tty.t_c[ED_IO]);
583 	tty_bind_char(el, 1);
584 	return (0);
585 }
586 
587 protected int
588 tty_init(EditLine *el)
589 {
590 
591 	el->el_tty.t_mode = EX_IO;
592 	el->el_tty.t_vdisable = _POSIX_VDISABLE;
593 	(void) memcpy(el->el_tty.t_t, ttyperm, sizeof(ttyperm_t));
594 	(void) memcpy(el->el_tty.t_c, ttychar, sizeof(ttychar_t));
595 	return (tty_setup(el));
596 }
597 
598 
599 /* tty_end():
600  *	Restore the tty to its original settings
601  */
602 protected void
603 /*ARGSUSED*/
604 tty_end(EditLine *el __attribute__((__unused__)))
605 {
606 
607 	/* XXX: Maybe reset to an initial state? */
608 }
609 
610 
611 /* tty__getspeed():
612  *	Get the tty speed
613  */
614 private speed_t
615 tty__getspeed(struct termios *td)
616 {
617 	speed_t spd;
618 
619 	if ((spd = cfgetispeed(td)) == 0)
620 		spd = cfgetospeed(td);
621 	return (spd);
622 }
623 
624 /* tty__getspeed():
625  *	Return the index of the asked char in the c_cc array
626  */
627 private int
628 tty__getcharindex(int i)
629 {
630 	switch (i) {
631 #ifdef VINTR
632 	case C_INTR:
633 		return VINTR;
634 #endif /* VINTR */
635 #ifdef VQUIT
636 	case C_QUIT:
637 		return VQUIT;
638 #endif /* VQUIT */
639 #ifdef VERASE
640 	case C_ERASE:
641 		return VERASE;
642 #endif /* VERASE */
643 #ifdef VKILL
644 	case C_KILL:
645 		return VKILL;
646 #endif /* VKILL */
647 #ifdef VEOF
648 	case C_EOF:
649 		return VEOF;
650 #endif /* VEOF */
651 #ifdef VEOL
652 	case C_EOL:
653 		return VEOL;
654 #endif /* VEOL */
655 #ifdef VEOL2
656 	case C_EOL2:
657 		return VEOL2;
658 #endif /* VEOL2 */
659 #ifdef VSWTCH
660 	case C_SWTCH:
661 		return VSWTCH;
662 #endif /* VSWTCH */
663 #ifdef VDSWTCH
664 	case C_DSWTCH:
665 		return VDSWTCH;
666 #endif /* VDSWTCH */
667 #ifdef VERASE2
668 	case C_ERASE2:
669 		return VERASE2;
670 #endif /* VERASE2 */
671 #ifdef VSTART
672 	case C_START:
673 		return VSTART;
674 #endif /* VSTART */
675 #ifdef VSTOP
676 	case C_STOP:
677 		return VSTOP;
678 #endif /* VSTOP */
679 #ifdef VWERASE
680 	case C_WERASE:
681 		return VWERASE;
682 #endif /* VWERASE */
683 #ifdef VSUSP
684 	case C_SUSP:
685 		return VSUSP;
686 #endif /* VSUSP */
687 #ifdef VDSUSP
688 	case C_DSUSP:
689 		return VDSUSP;
690 #endif /* VDSUSP */
691 #ifdef VREPRINT
692 	case C_REPRINT:
693 		return VREPRINT;
694 #endif /* VREPRINT */
695 #ifdef VDISCARD
696 	case C_DISCARD:
697 		return VDISCARD;
698 #endif /* VDISCARD */
699 #ifdef VLNEXT
700 	case C_LNEXT:
701 		return VLNEXT;
702 #endif /* VLNEXT */
703 #ifdef VSTATUS
704 	case C_STATUS:
705 		return VSTATUS;
706 #endif /* VSTATUS */
707 #ifdef VPAGE
708 	case C_PAGE:
709 		return VPAGE;
710 #endif /* VPAGE */
711 #ifdef VPGOFF
712 	case C_PGOFF:
713 		return VPGOFF;
714 #endif /* VPGOFF */
715 #ifdef VKILL2
716 	case C_KILL2:
717 		return VKILL2;
718 #endif /* KILL2 */
719 #ifdef VMIN
720 	case C_MIN:
721 		return VMIN;
722 #endif /* VMIN */
723 #ifdef VTIME
724 	case C_TIME:
725 		return VTIME;
726 #endif /* VTIME */
727 	default:
728 		return -1;
729 	}
730 }
731 
732 /* tty__getchar():
733  *	Get the tty characters
734  */
735 private void
736 tty__getchar(struct termios *td, unsigned char *s)
737 {
738 
739 #ifdef VINTR
740 	s[C_INTR] = td->c_cc[VINTR];
741 #endif /* VINTR */
742 #ifdef VQUIT
743 	s[C_QUIT] = td->c_cc[VQUIT];
744 #endif /* VQUIT */
745 #ifdef VERASE
746 	s[C_ERASE] = td->c_cc[VERASE];
747 #endif /* VERASE */
748 #ifdef VKILL
749 	s[C_KILL] = td->c_cc[VKILL];
750 #endif /* VKILL */
751 #ifdef VEOF
752 	s[C_EOF] = td->c_cc[VEOF];
753 #endif /* VEOF */
754 #ifdef VEOL
755 	s[C_EOL] = td->c_cc[VEOL];
756 #endif /* VEOL */
757 #ifdef VEOL2
758 	s[C_EOL2] = td->c_cc[VEOL2];
759 #endif /* VEOL2 */
760 #ifdef VSWTCH
761 	s[C_SWTCH] = td->c_cc[VSWTCH];
762 #endif /* VSWTCH */
763 #ifdef VDSWTCH
764 	s[C_DSWTCH] = td->c_cc[VDSWTCH];
765 #endif /* VDSWTCH */
766 #ifdef VERASE2
767 	s[C_ERASE2] = td->c_cc[VERASE2];
768 #endif /* VERASE2 */
769 #ifdef VSTART
770 	s[C_START] = td->c_cc[VSTART];
771 #endif /* VSTART */
772 #ifdef VSTOP
773 	s[C_STOP] = td->c_cc[VSTOP];
774 #endif /* VSTOP */
775 #ifdef VWERASE
776 	s[C_WERASE] = td->c_cc[VWERASE];
777 #endif /* VWERASE */
778 #ifdef VSUSP
779 	s[C_SUSP] = td->c_cc[VSUSP];
780 #endif /* VSUSP */
781 #ifdef VDSUSP
782 	s[C_DSUSP] = td->c_cc[VDSUSP];
783 #endif /* VDSUSP */
784 #ifdef VREPRINT
785 	s[C_REPRINT] = td->c_cc[VREPRINT];
786 #endif /* VREPRINT */
787 #ifdef VDISCARD
788 	s[C_DISCARD] = td->c_cc[VDISCARD];
789 #endif /* VDISCARD */
790 #ifdef VLNEXT
791 	s[C_LNEXT] = td->c_cc[VLNEXT];
792 #endif /* VLNEXT */
793 #ifdef VSTATUS
794 	s[C_STATUS] = td->c_cc[VSTATUS];
795 #endif /* VSTATUS */
796 #ifdef VPAGE
797 	s[C_PAGE] = td->c_cc[VPAGE];
798 #endif /* VPAGE */
799 #ifdef VPGOFF
800 	s[C_PGOFF] = td->c_cc[VPGOFF];
801 #endif /* VPGOFF */
802 #ifdef VKILL2
803 	s[C_KILL2] = td->c_cc[VKILL2];
804 #endif /* KILL2 */
805 #ifdef VMIN
806 	s[C_MIN] = td->c_cc[VMIN];
807 #endif /* VMIN */
808 #ifdef VTIME
809 	s[C_TIME] = td->c_cc[VTIME];
810 #endif /* VTIME */
811 }				/* tty__getchar */
812 
813 
814 /* tty__setchar():
815  *	Set the tty characters
816  */
817 private void
818 tty__setchar(struct termios *td, unsigned char *s)
819 {
820 
821 #ifdef VINTR
822 	td->c_cc[VINTR] = s[C_INTR];
823 #endif /* VINTR */
824 #ifdef VQUIT
825 	td->c_cc[VQUIT] = s[C_QUIT];
826 #endif /* VQUIT */
827 #ifdef VERASE
828 	td->c_cc[VERASE] = s[C_ERASE];
829 #endif /* VERASE */
830 #ifdef VKILL
831 	td->c_cc[VKILL] = s[C_KILL];
832 #endif /* VKILL */
833 #ifdef VEOF
834 	td->c_cc[VEOF] = s[C_EOF];
835 #endif /* VEOF */
836 #ifdef VEOL
837 	td->c_cc[VEOL] = s[C_EOL];
838 #endif /* VEOL */
839 #ifdef VEOL2
840 	td->c_cc[VEOL2] = s[C_EOL2];
841 #endif /* VEOL2 */
842 #ifdef VSWTCH
843 	td->c_cc[VSWTCH] = s[C_SWTCH];
844 #endif /* VSWTCH */
845 #ifdef VDSWTCH
846 	td->c_cc[VDSWTCH] = s[C_DSWTCH];
847 #endif /* VDSWTCH */
848 #ifdef VERASE2
849 	td->c_cc[VERASE2] = s[C_ERASE2];
850 #endif /* VERASE2 */
851 #ifdef VSTART
852 	td->c_cc[VSTART] = s[C_START];
853 #endif /* VSTART */
854 #ifdef VSTOP
855 	td->c_cc[VSTOP] = s[C_STOP];
856 #endif /* VSTOP */
857 #ifdef VWERASE
858 	td->c_cc[VWERASE] = s[C_WERASE];
859 #endif /* VWERASE */
860 #ifdef VSUSP
861 	td->c_cc[VSUSP] = s[C_SUSP];
862 #endif /* VSUSP */
863 #ifdef VDSUSP
864 	td->c_cc[VDSUSP] = s[C_DSUSP];
865 #endif /* VDSUSP */
866 #ifdef VREPRINT
867 	td->c_cc[VREPRINT] = s[C_REPRINT];
868 #endif /* VREPRINT */
869 #ifdef VDISCARD
870 	td->c_cc[VDISCARD] = s[C_DISCARD];
871 #endif /* VDISCARD */
872 #ifdef VLNEXT
873 	td->c_cc[VLNEXT] = s[C_LNEXT];
874 #endif /* VLNEXT */
875 #ifdef VSTATUS
876 	td->c_cc[VSTATUS] = s[C_STATUS];
877 #endif /* VSTATUS */
878 #ifdef VPAGE
879 	td->c_cc[VPAGE] = s[C_PAGE];
880 #endif /* VPAGE */
881 #ifdef VPGOFF
882 	td->c_cc[VPGOFF] = s[C_PGOFF];
883 #endif /* VPGOFF */
884 #ifdef VKILL2
885 	td->c_cc[VKILL2] = s[C_KILL2];
886 #endif /* VKILL2 */
887 #ifdef VMIN
888 	td->c_cc[VMIN] = s[C_MIN];
889 #endif /* VMIN */
890 #ifdef VTIME
891 	td->c_cc[VTIME] = s[C_TIME];
892 #endif /* VTIME */
893 }				/* tty__setchar */
894 
895 
896 /* tty_bind_char():
897  *	Rebind the editline functions
898  */
899 protected void
900 tty_bind_char(EditLine *el, int force)
901 {
902 
903 	unsigned char *t_n = el->el_tty.t_c[ED_IO];
904 	unsigned char *t_o = el->el_tty.t_ed.c_cc;
905 	Char new[2], old[2];
906 	const ttymap_t *tp;
907 	el_action_t *map, *alt;
908 	const el_action_t *dmap, *dalt;
909 	new[1] = old[1] = '\0';
910 
911 	map = el->el_map.key;
912 	alt = el->el_map.alt;
913 	if (el->el_map.type == MAP_VI) {
914 		dmap = el->el_map.vii;
915 		dalt = el->el_map.vic;
916 	} else {
917 		dmap = el->el_map.emacs;
918 		dalt = NULL;
919 	}
920 
921 	for (tp = tty_map; tp->nch != -1; tp++) {
922 		new[0] = t_n[tp->nch];
923 		old[0] = t_o[tp->och];
924 		if (new[0] == old[0] && !force)
925 			continue;
926 		/* Put the old default binding back, and set the new binding */
927 		key_clear(el, map, old);
928 		map[UC(old[0])] = dmap[UC(old[0])];
929 		key_clear(el, map, new);
930 		/* MAP_VI == 1, MAP_EMACS == 0... */
931 		map[UC(new[0])] = tp->bind[el->el_map.type];
932 		if (dalt) {
933 			key_clear(el, alt, old);
934 			alt[UC(old[0])] = dalt[UC(old[0])];
935 			key_clear(el, alt, new);
936 			alt[UC(new[0])] = tp->bind[el->el_map.type + 1];
937 		}
938 	}
939 }
940 
941 
942 /* tty_rawmode():
943  * 	Set terminal into 1 character at a time mode.
944  */
945 protected int
946 tty_rawmode(EditLine *el)
947 {
948 
949 	if (el->el_tty.t_mode == ED_IO || el->el_tty.t_mode == QU_IO)
950 		return (0);
951 
952 	if (el->el_flags & EDIT_DISABLED)
953 		return (0);
954 
955 	if (tty_getty(el, &el->el_tty.t_ts) == -1) {
956 #ifdef DEBUG_TTY
957 		(void) fprintf(el->el_errfile, "tty_rawmode: tty_getty: %s\n",
958 		    strerror(errno));
959 #endif /* DEBUG_TTY */
960 		return (-1);
961 	}
962 	/*
963          * We always keep up with the eight bit setting and the speed of the
964          * tty. But we only believe changes that are made to cooked mode!
965          */
966 	el->el_tty.t_eight = tty__geteightbit(&el->el_tty.t_ts);
967 	el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ts);
968 
969 	if (tty__getspeed(&el->el_tty.t_ex) != el->el_tty.t_speed ||
970 	    tty__getspeed(&el->el_tty.t_ed) != el->el_tty.t_speed) {
971 		(void) cfsetispeed(&el->el_tty.t_ex, el->el_tty.t_speed);
972 		(void) cfsetospeed(&el->el_tty.t_ex, el->el_tty.t_speed);
973 		(void) cfsetispeed(&el->el_tty.t_ed, el->el_tty.t_speed);
974 		(void) cfsetospeed(&el->el_tty.t_ed, el->el_tty.t_speed);
975 	}
976 	if (tty__cooked_mode(&el->el_tty.t_ts)) {
977 		if (el->el_tty.t_ts.c_cflag != el->el_tty.t_ex.c_cflag) {
978 			el->el_tty.t_ex.c_cflag =
979 			    el->el_tty.t_ts.c_cflag;
980 			el->el_tty.t_ex.c_cflag &=
981 			    ~el->el_tty.t_t[EX_IO][MD_CTL].t_clrmask;
982 			el->el_tty.t_ex.c_cflag |=
983 			    el->el_tty.t_t[EX_IO][MD_CTL].t_setmask;
984 
985 			el->el_tty.t_ed.c_cflag =
986 			    el->el_tty.t_ts.c_cflag;
987 			el->el_tty.t_ed.c_cflag &=
988 			    ~el->el_tty.t_t[ED_IO][MD_CTL].t_clrmask;
989 			el->el_tty.t_ed.c_cflag |=
990 			    el->el_tty.t_t[ED_IO][MD_CTL].t_setmask;
991 		}
992 		if ((el->el_tty.t_ts.c_lflag != el->el_tty.t_ex.c_lflag) &&
993 		    (el->el_tty.t_ts.c_lflag != el->el_tty.t_ed.c_lflag)) {
994 			el->el_tty.t_ex.c_lflag =
995 			    el->el_tty.t_ts.c_lflag;
996 			el->el_tty.t_ex.c_lflag &=
997 			    ~el->el_tty.t_t[EX_IO][MD_LIN].t_clrmask;
998 			el->el_tty.t_ex.c_lflag |=
999 			    el->el_tty.t_t[EX_IO][MD_LIN].t_setmask;
1000 
1001 			el->el_tty.t_ed.c_lflag =
1002 			    el->el_tty.t_ts.c_lflag;
1003 			el->el_tty.t_ed.c_lflag &=
1004 			    ~el->el_tty.t_t[ED_IO][MD_LIN].t_clrmask;
1005 			el->el_tty.t_ed.c_lflag |=
1006 			    el->el_tty.t_t[ED_IO][MD_LIN].t_setmask;
1007 		}
1008 		if ((el->el_tty.t_ts.c_iflag != el->el_tty.t_ex.c_iflag) &&
1009 		    (el->el_tty.t_ts.c_iflag != el->el_tty.t_ed.c_iflag)) {
1010 			el->el_tty.t_ex.c_iflag =
1011 			    el->el_tty.t_ts.c_iflag;
1012 			el->el_tty.t_ex.c_iflag &=
1013 			    ~el->el_tty.t_t[EX_IO][MD_INP].t_clrmask;
1014 			el->el_tty.t_ex.c_iflag |=
1015 			    el->el_tty.t_t[EX_IO][MD_INP].t_setmask;
1016 
1017 			el->el_tty.t_ed.c_iflag =
1018 			    el->el_tty.t_ts.c_iflag;
1019 			el->el_tty.t_ed.c_iflag &=
1020 			    ~el->el_tty.t_t[ED_IO][MD_INP].t_clrmask;
1021 			el->el_tty.t_ed.c_iflag |=
1022 			    el->el_tty.t_t[ED_IO][MD_INP].t_setmask;
1023 		}
1024 		if ((el->el_tty.t_ts.c_oflag != el->el_tty.t_ex.c_oflag) &&
1025 		    (el->el_tty.t_ts.c_oflag != el->el_tty.t_ed.c_oflag)) {
1026 			el->el_tty.t_ex.c_oflag =
1027 			    el->el_tty.t_ts.c_oflag;
1028 			el->el_tty.t_ex.c_oflag &=
1029 			    ~el->el_tty.t_t[EX_IO][MD_OUT].t_clrmask;
1030 			el->el_tty.t_ex.c_oflag |=
1031 			    el->el_tty.t_t[EX_IO][MD_OUT].t_setmask;
1032 
1033 			el->el_tty.t_ed.c_oflag =
1034 			    el->el_tty.t_ts.c_oflag;
1035 			el->el_tty.t_ed.c_oflag &=
1036 			    ~el->el_tty.t_t[ED_IO][MD_OUT].t_clrmask;
1037 			el->el_tty.t_ed.c_oflag |=
1038 			    el->el_tty.t_t[ED_IO][MD_OUT].t_setmask;
1039 		}
1040 		if (tty__gettabs(&el->el_tty.t_ex) == 0)
1041 			el->el_tty.t_tabs = 0;
1042 		else
1043 			el->el_tty.t_tabs = EL_CAN_TAB ? 1 : 0;
1044 
1045 		{
1046 			int i;
1047 
1048 			tty__getchar(&el->el_tty.t_ts, el->el_tty.t_c[TS_IO]);
1049 			/*
1050 		         * Check if the user made any changes.
1051 		         * If he did, then propagate the changes to the
1052 		         * edit and execute data structures.
1053 		         */
1054 			for (i = 0; i < C_NCC; i++)
1055 				if (el->el_tty.t_c[TS_IO][i] !=
1056 				    el->el_tty.t_c[EX_IO][i])
1057 					break;
1058 
1059 			if (i != C_NCC) {
1060 				/*
1061 				 * Propagate changes only to the unprotected
1062 				 * chars that have been modified just now.
1063 				 */
1064 				for (i = 0; i < C_NCC; i++) {
1065 					if (!((el->el_tty.t_t[ED_IO][MD_CHAR].t_setmask & C_SH(i)))
1066 					    && (el->el_tty.t_c[TS_IO][i] != el->el_tty.t_c[EX_IO][i]))
1067 						el->el_tty.t_c[ED_IO][i] = el->el_tty.t_c[TS_IO][i];
1068 					if (el->el_tty.t_t[ED_IO][MD_CHAR].t_clrmask & C_SH(i))
1069 						el->el_tty.t_c[ED_IO][i] = el->el_tty.t_vdisable;
1070 				}
1071 				tty_bind_char(el, 0);
1072 				tty__setchar(&el->el_tty.t_ed, el->el_tty.t_c[ED_IO]);
1073 
1074 				for (i = 0; i < C_NCC; i++) {
1075 					if (!((el->el_tty.t_t[EX_IO][MD_CHAR].t_setmask & C_SH(i)))
1076 					    && (el->el_tty.t_c[TS_IO][i] != el->el_tty.t_c[EX_IO][i]))
1077 						el->el_tty.t_c[EX_IO][i] = el->el_tty.t_c[TS_IO][i];
1078 					if (el->el_tty.t_t[EX_IO][MD_CHAR].t_clrmask & C_SH(i))
1079 						el->el_tty.t_c[EX_IO][i] = el->el_tty.t_vdisable;
1080 				}
1081 				tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
1082 			}
1083 		}
1084 	}
1085 	if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ed) == -1) {
1086 #ifdef DEBUG_TTY
1087 		(void) fprintf(el->el_errfile, "tty_rawmode: tty_setty: %s\n",
1088 		    strerror(errno));
1089 #endif /* DEBUG_TTY */
1090 		return (-1);
1091 	}
1092 	el->el_tty.t_mode = ED_IO;
1093 	return (0);
1094 }
1095 
1096 
1097 /* tty_cookedmode():
1098  *	Set the tty back to normal mode
1099  */
1100 protected int
1101 tty_cookedmode(EditLine *el)
1102 {				/* set tty in normal setup */
1103 
1104 	if (el->el_tty.t_mode == EX_IO)
1105 		return (0);
1106 
1107 	if (el->el_flags & EDIT_DISABLED)
1108 		return (0);
1109 
1110 	if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ex) == -1) {
1111 #ifdef DEBUG_TTY
1112 		(void) fprintf(el->el_errfile,
1113 		    "tty_cookedmode: tty_setty: %s\n",
1114 		    strerror(errno));
1115 #endif /* DEBUG_TTY */
1116 		return (-1);
1117 	}
1118 	el->el_tty.t_mode = EX_IO;
1119 	return (0);
1120 }
1121 
1122 
1123 /* tty_quotemode():
1124  *	Turn on quote mode
1125  */
1126 protected int
1127 tty_quotemode(EditLine *el)
1128 {
1129 	if (el->el_tty.t_mode == QU_IO)
1130 		return (0);
1131 
1132 	el->el_tty.t_qu = el->el_tty.t_ed;
1133 
1134 	el->el_tty.t_qu.c_iflag &= ~el->el_tty.t_t[QU_IO][MD_INP].t_clrmask;
1135 	el->el_tty.t_qu.c_iflag |= el->el_tty.t_t[QU_IO][MD_INP].t_setmask;
1136 
1137 	el->el_tty.t_qu.c_oflag &= ~el->el_tty.t_t[QU_IO][MD_OUT].t_clrmask;
1138 	el->el_tty.t_qu.c_oflag |= el->el_tty.t_t[QU_IO][MD_OUT].t_setmask;
1139 
1140 	el->el_tty.t_qu.c_cflag &= ~el->el_tty.t_t[QU_IO][MD_CTL].t_clrmask;
1141 	el->el_tty.t_qu.c_cflag |= el->el_tty.t_t[QU_IO][MD_CTL].t_setmask;
1142 
1143 	el->el_tty.t_qu.c_lflag &= ~el->el_tty.t_t[QU_IO][MD_LIN].t_clrmask;
1144 	el->el_tty.t_qu.c_lflag |= el->el_tty.t_t[QU_IO][MD_LIN].t_setmask;
1145 
1146 	if (tty_setty(el, TCSADRAIN, &el->el_tty.t_qu) == -1) {
1147 #ifdef DEBUG_TTY
1148 		(void) fprintf(el->el_errfile, "QuoteModeOn: tty_setty: %s\n",
1149 		    strerror(errno));
1150 #endif /* DEBUG_TTY */
1151 		return (-1);
1152 	}
1153 	el->el_tty.t_mode = QU_IO;
1154 	return (0);
1155 }
1156 
1157 
1158 /* tty_noquotemode():
1159  *	Turn off quote mode
1160  */
1161 protected int
1162 tty_noquotemode(EditLine *el)
1163 {
1164 
1165 	if (el->el_tty.t_mode != QU_IO)
1166 		return (0);
1167 	if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ed) == -1) {
1168 #ifdef DEBUG_TTY
1169 		(void) fprintf(el->el_errfile, "QuoteModeOff: tty_setty: %s\n",
1170 		    strerror(errno));
1171 #endif /* DEBUG_TTY */
1172 		return (-1);
1173 	}
1174 	el->el_tty.t_mode = ED_IO;
1175 	return (0);
1176 }
1177 
1178 
1179 /* tty_stty():
1180  *	Stty builtin
1181  */
1182 protected int
1183 /*ARGSUSED*/
1184 tty_stty(EditLine *el, int argc __attribute__((__unused__)), const Char **argv)
1185 {
1186 	const ttymodes_t *m;
1187 	char x;
1188 	int aflag = 0;
1189 	const Char *s, *d;
1190         char name[EL_BUFSIZ];
1191 	struct termios *tios = &el->el_tty.t_ex;
1192 	int z = EX_IO;
1193 
1194 	if (argv == NULL)
1195 		return (-1);
1196 	strncpy(name, ct_encode_string(*argv++, &el->el_scratch), sizeof(name));
1197         name[sizeof(name) - 1] = '\0';
1198 
1199 	while (argv && *argv && argv[0][0] == '-' && argv[0][2] == '\0')
1200 		switch (argv[0][1]) {
1201 		case 'a':
1202 			aflag++;
1203 			argv++;
1204 			break;
1205 		case 'd':
1206 			argv++;
1207 			tios = &el->el_tty.t_ed;
1208 			z = ED_IO;
1209 			break;
1210 		case 'x':
1211 			argv++;
1212 			tios = &el->el_tty.t_ex;
1213 			z = EX_IO;
1214 			break;
1215 		case 'q':
1216 			argv++;
1217 			tios = &el->el_tty.t_ts;
1218 			z = QU_IO;
1219 			break;
1220 		default:
1221 			(void) fprintf(el->el_errfile,
1222 			    "%s: Unknown switch `%c'.\n",
1223 			    name, argv[0][1]);
1224 			return (-1);
1225 		}
1226 
1227 	if (!argv || !*argv) {
1228 		int i = -1;
1229 		size_t len = 0, st = 0, cu;
1230 		for (m = ttymodes; m->m_name; m++) {
1231 			if (m->m_type != i) {
1232 				(void) fprintf(el->el_outfile, "%s%s",
1233 				    i != -1 ? "\n" : "",
1234 				    el->el_tty.t_t[z][m->m_type].t_name);
1235 				i = m->m_type;
1236 				st = len =
1237 				    strlen(el->el_tty.t_t[z][m->m_type].t_name);
1238 			}
1239 			if (i != -1) {
1240 			    x = (el->el_tty.t_t[z][i].t_setmask & m->m_value)
1241 				?  '+' : '\0';
1242 			    x = (el->el_tty.t_t[z][i].t_clrmask & m->m_value)
1243 				? '-' : x;
1244 			} else {
1245 			    x = '\0';
1246 			}
1247 
1248 			if (x != '\0' || aflag) {
1249 
1250 				cu = strlen(m->m_name) + (x != '\0') + 1;
1251 
1252 				if (len + cu >= (size_t)el->el_term.t_size.h) {
1253 					(void) fprintf(el->el_outfile, "\n%*s",
1254 					    (int)st, "");
1255 					len = st + cu;
1256 				} else
1257 					len += cu;
1258 
1259 				if (x != '\0')
1260 					(void) fprintf(el->el_outfile, "%c%s ",
1261 					    x, m->m_name);
1262 				else
1263 					(void) fprintf(el->el_outfile, "%s ",
1264 					    m->m_name);
1265 			}
1266 		}
1267 		(void) fprintf(el->el_outfile, "\n");
1268 		return (0);
1269 	}
1270 	while (argv && (s = *argv++)) {
1271 		const Char *p;
1272 		switch (*s) {
1273 		case '+':
1274 		case '-':
1275 			x = *s++;
1276 			break;
1277 		default:
1278 			x = '\0';
1279 			break;
1280 		}
1281 		d = s;
1282 		p = Strchr(s, '=');
1283 		for (m = ttymodes; m->m_name; m++)
1284 			if ((p ? strncmp(m->m_name, ct_encode_string(d, &el->el_scratch), (size_t)(p - d)) :
1285 			    strcmp(m->m_name, ct_encode_string(d, &el->el_scratch))) == 0 &&
1286 			    (p == NULL || m->m_type == MD_CHAR))
1287 				break;
1288 
1289 		if (!m->m_name) {
1290 			(void) fprintf(el->el_errfile,
1291 			    "%s: Invalid argument `" FSTR "'.\n", name, d);
1292 			return (-1);
1293 		}
1294 		if (p) {
1295 			int c = ffs((int)m->m_value);
1296 			int v = *++p ? parse__escape(&p) :
1297 			    el->el_tty.t_vdisable;
1298 			assert(c != 0);
1299 			c--;
1300 			c = tty__getcharindex(c);
1301 			assert(c != -1);
1302 			tios->c_cc[c] = v;
1303 			continue;
1304 		}
1305 		switch (x) {
1306 		case '+':
1307 			el->el_tty.t_t[z][m->m_type].t_setmask |= m->m_value;
1308 			el->el_tty.t_t[z][m->m_type].t_clrmask &= ~m->m_value;
1309 			break;
1310 		case '-':
1311 			el->el_tty.t_t[z][m->m_type].t_setmask &= ~m->m_value;
1312 			el->el_tty.t_t[z][m->m_type].t_clrmask |= m->m_value;
1313 			break;
1314 		default:
1315 			el->el_tty.t_t[z][m->m_type].t_setmask &= ~m->m_value;
1316 			el->el_tty.t_t[z][m->m_type].t_clrmask &= ~m->m_value;
1317 			break;
1318 		}
1319 	}
1320 
1321 	if (el->el_tty.t_mode == z) {
1322 		if (tty_setty(el, TCSADRAIN, tios) == -1) {
1323 #ifdef DEBUG_TTY
1324 			(void) fprintf(el->el_errfile,
1325 			    "tty_stty: tty_setty: %s\n", strerror(errno));
1326 #endif /* DEBUG_TTY */
1327 			return (-1);
1328 		}
1329 	}
1330 
1331 	return (0);
1332 }
1333 
1334 
1335 #ifdef notyet
1336 /* tty_printchar():
1337  *	DEbugging routine to print the tty characters
1338  */
1339 private void
1340 tty_printchar(EditLine *el, unsigned char *s)
1341 {
1342 	ttyperm_t *m;
1343 	int i;
1344 
1345 	for (i = 0; i < C_NCC; i++) {
1346 		for (m = el->el_tty.t_t; m->m_name; m++)
1347 			if (m->m_type == MD_CHAR && C_SH(i) == m->m_value)
1348 				break;
1349 		if (m->m_name)
1350 			(void) fprintf(el->el_errfile, "%s ^%c ",
1351 			    m->m_name, s[i] + 'A' - 1);
1352 		if (i % 5 == 0)
1353 			(void) fprintf(el->el_errfile, "\n");
1354 	}
1355 	(void) fprintf(el->el_errfile, "\n");
1356 }
1357 #endif /* notyet */
1358