xref: /netbsd/lib/libedit/tty.c (revision bf9ec67e)
1 /*	$NetBSD: tty.c,v 1.16 2002/03/18 16:01:01 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. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by the University of
21  *	California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #include "config.h"
40 #if !defined(lint) && !defined(SCCSID)
41 #if 0
42 static char sccsid[] = "@(#)tty.c	8.1 (Berkeley) 6/4/93";
43 #else
44 __RCSID("$NetBSD: tty.c,v 1.16 2002/03/18 16:01:01 christos Exp $");
45 #endif
46 #endif /* not lint && not SCCSID */
47 
48 /*
49  * tty.c: tty interface stuff
50  */
51 #include "tty.h"
52 #include "el.h"
53 
54 typedef struct ttymodes_t {
55 	const char *m_name;
56 	u_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 	{ED_DELETE_PREV_CHAR, VI_DELETE_PREV_CHAR, ED_PREV_CHAR}},
128 #endif /* VERASE */
129 #ifdef VERASE2
130 	{C_ERASE2, VERASE2,
131 	{ED_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_getty(el, td)	tcgetattr((el)->el_infd, (td))
452 #define	tty_setty(el, td)	tcsetattr((el)->el_infd, TCSADRAIN, (td))
453 
454 #define	tty__gettabs(td)	((((td)->c_oflag & TAB3) == TAB3) ? 0 : 1)
455 #define	tty__geteightbit(td)	(((td)->c_cflag & CSIZE) == CS8)
456 #define	tty__cooked_mode(td)	((td)->c_lflag & ICANON)
457 
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 
466 /* tty_setup():
467  *	Get the tty parameters and initialize the editing state
468  */
469 private int
470 tty_setup(EditLine *el)
471 {
472 	int rst = 1;
473 
474 	if (el->el_flags & EDIT_DISABLED)
475 		return (0);
476 
477 	if (tty_getty(el, &el->el_tty.t_ed) == -1) {
478 #ifdef DEBUG_TTY
479 		(void) fprintf(el->el_errfile,
480 		    "tty_setup: tty_getty: %s\n", strerror(errno));
481 #endif /* DEBUG_TTY */
482 		return (-1);
483 	}
484 	el->el_tty.t_ts = el->el_tty.t_ex = el->el_tty.t_ed;
485 
486 	el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ex);
487 	el->el_tty.t_tabs = tty__gettabs(&el->el_tty.t_ex);
488 	el->el_tty.t_eight = tty__geteightbit(&el->el_tty.t_ex);
489 
490 	el->el_tty.t_ex.c_iflag &= ~el->el_tty.t_t[EX_IO][MD_INP].t_clrmask;
491 	el->el_tty.t_ex.c_iflag |= el->el_tty.t_t[EX_IO][MD_INP].t_setmask;
492 
493 	el->el_tty.t_ex.c_oflag &= ~el->el_tty.t_t[EX_IO][MD_OUT].t_clrmask;
494 	el->el_tty.t_ex.c_oflag |= el->el_tty.t_t[EX_IO][MD_OUT].t_setmask;
495 
496 	el->el_tty.t_ex.c_cflag &= ~el->el_tty.t_t[EX_IO][MD_CTL].t_clrmask;
497 	el->el_tty.t_ex.c_cflag |= el->el_tty.t_t[EX_IO][MD_CTL].t_setmask;
498 
499 	el->el_tty.t_ex.c_lflag &= ~el->el_tty.t_t[EX_IO][MD_LIN].t_clrmask;
500 	el->el_tty.t_ex.c_lflag |= el->el_tty.t_t[EX_IO][MD_LIN].t_setmask;
501 
502 	/*
503          * Reset the tty chars to reasonable defaults
504          * If they are disabled, then enable them.
505          */
506 	if (rst) {
507 		if (tty__cooked_mode(&el->el_tty.t_ts)) {
508 			tty__getchar(&el->el_tty.t_ts, el->el_tty.t_c[TS_IO]);
509 			/*
510 	                 * Don't affect CMIN and CTIME for the editor mode
511 	                 */
512 			for (rst = 0; rst < C_NCC - 2; rst++)
513 				if (el->el_tty.t_c[TS_IO][rst] !=
514 				      el->el_tty.t_vdisable
515 				    && el->el_tty.t_c[ED_IO][rst] !=
516 				      el->el_tty.t_vdisable)
517 					el->el_tty.t_c[ED_IO][rst] =
518 					    el->el_tty.t_c[TS_IO][rst];
519 			for (rst = 0; rst < C_NCC; rst++)
520 				if (el->el_tty.t_c[TS_IO][rst] !=
521 				    el->el_tty.t_vdisable)
522 					el->el_tty.t_c[EX_IO][rst] =
523 					    el->el_tty.t_c[TS_IO][rst];
524 		}
525 		tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
526 		if (tty_setty(el, &el->el_tty.t_ex) == -1) {
527 #ifdef DEBUG_TTY
528 			(void) fprintf(el->el_errfile,
529 			    "tty_setup: tty_setty: %s\n",
530 			    strerror(errno));
531 #endif /* DEBUG_TTY */
532 			return (-1);
533 		}
534 	} else
535 		tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
536 
537 	el->el_tty.t_ed.c_iflag &= ~el->el_tty.t_t[ED_IO][MD_INP].t_clrmask;
538 	el->el_tty.t_ed.c_iflag |= el->el_tty.t_t[ED_IO][MD_INP].t_setmask;
539 
540 	el->el_tty.t_ed.c_oflag &= ~el->el_tty.t_t[ED_IO][MD_OUT].t_clrmask;
541 	el->el_tty.t_ed.c_oflag |= el->el_tty.t_t[ED_IO][MD_OUT].t_setmask;
542 
543 	el->el_tty.t_ed.c_cflag &= ~el->el_tty.t_t[ED_IO][MD_CTL].t_clrmask;
544 	el->el_tty.t_ed.c_cflag |= el->el_tty.t_t[ED_IO][MD_CTL].t_setmask;
545 
546 	el->el_tty.t_ed.c_lflag &= ~el->el_tty.t_t[ED_IO][MD_LIN].t_clrmask;
547 	el->el_tty.t_ed.c_lflag |= el->el_tty.t_t[ED_IO][MD_LIN].t_setmask;
548 
549 	tty__setchar(&el->el_tty.t_ed, el->el_tty.t_c[ED_IO]);
550 	tty_bind_char(el, 1);
551 	return (0);
552 }
553 
554 protected int
555 tty_init(EditLine *el)
556 {
557 
558 	el->el_tty.t_mode = EX_IO;
559 	el->el_tty.t_vdisable = _POSIX_VDISABLE;
560 	(void) memcpy(el->el_tty.t_t, ttyperm, sizeof(ttyperm_t));
561 	(void) memcpy(el->el_tty.t_c, ttychar, sizeof(ttychar_t));
562 	return (tty_setup(el));
563 }
564 
565 
566 /* tty_end():
567  *	Restore the tty to its original settings
568  */
569 protected void
570 /*ARGSUSED*/
571 tty_end(EditLine *el)
572 {
573 
574 	/* XXX: Maybe reset to an initial state? */
575 }
576 
577 
578 /* tty__getspeed():
579  *	Get the tty speed
580  */
581 private speed_t
582 tty__getspeed(struct termios *td)
583 {
584 	speed_t spd;
585 
586 	if ((spd = cfgetispeed(td)) == 0)
587 		spd = cfgetospeed(td);
588 	return (spd);
589 }
590 
591 
592 /* tty__getchar():
593  *	Get the tty characters
594  */
595 private void
596 tty__getchar(struct termios *td, unsigned char *s)
597 {
598 
599 #ifdef VINTR
600 	s[C_INTR] = td->c_cc[VINTR];
601 #endif /* VINTR */
602 #ifdef VQUIT
603 	s[C_QUIT] = td->c_cc[VQUIT];
604 #endif /* VQUIT */
605 #ifdef VERASE
606 	s[C_ERASE] = td->c_cc[VERASE];
607 #endif /* VERASE */
608 #ifdef VKILL
609 	s[C_KILL] = td->c_cc[VKILL];
610 #endif /* VKILL */
611 #ifdef VEOF
612 	s[C_EOF] = td->c_cc[VEOF];
613 #endif /* VEOF */
614 #ifdef VEOL
615 	s[C_EOL] = td->c_cc[VEOL];
616 #endif /* VEOL */
617 #ifdef VEOL2
618 	s[C_EOL2] = td->c_cc[VEOL2];
619 #endif /* VEOL2 */
620 #ifdef VSWTCH
621 	s[C_SWTCH] = td->c_cc[VSWTCH];
622 #endif /* VSWTCH */
623 #ifdef VDSWTCH
624 	s[C_DSWTCH] = td->c_cc[VDSWTCH];
625 #endif /* VDSWTCH */
626 #ifdef VERASE2
627 	s[C_ERASE2] = td->c_cc[VERASE2];
628 #endif /* VERASE2 */
629 #ifdef VSTART
630 	s[C_START] = td->c_cc[VSTART];
631 #endif /* VSTART */
632 #ifdef VSTOP
633 	s[C_STOP] = td->c_cc[VSTOP];
634 #endif /* VSTOP */
635 #ifdef VWERASE
636 	s[C_WERASE] = td->c_cc[VWERASE];
637 #endif /* VWERASE */
638 #ifdef VSUSP
639 	s[C_SUSP] = td->c_cc[VSUSP];
640 #endif /* VSUSP */
641 #ifdef VDSUSP
642 	s[C_DSUSP] = td->c_cc[VDSUSP];
643 #endif /* VDSUSP */
644 #ifdef VREPRINT
645 	s[C_REPRINT] = td->c_cc[VREPRINT];
646 #endif /* VREPRINT */
647 #ifdef VDISCARD
648 	s[C_DISCARD] = td->c_cc[VDISCARD];
649 #endif /* VDISCARD */
650 #ifdef VLNEXT
651 	s[C_LNEXT] = td->c_cc[VLNEXT];
652 #endif /* VLNEXT */
653 #ifdef VSTATUS
654 	s[C_STATUS] = td->c_cc[VSTATUS];
655 #endif /* VSTATUS */
656 #ifdef VPAGE
657 	s[C_PAGE] = td->c_cc[VPAGE];
658 #endif /* VPAGE */
659 #ifdef VPGOFF
660 	s[C_PGOFF] = td->c_cc[VPGOFF];
661 #endif /* VPGOFF */
662 #ifdef VKILL2
663 	s[C_KILL2] = td->c_cc[VKILL2];
664 #endif /* KILL2 */
665 #ifdef VMIN
666 	s[C_MIN] = td->c_cc[VMIN];
667 #endif /* VMIN */
668 #ifdef VTIME
669 	s[C_TIME] = td->c_cc[VTIME];
670 #endif /* VTIME */
671 }				/* tty__getchar */
672 
673 
674 /* tty__setchar():
675  *	Set the tty characters
676  */
677 private void
678 tty__setchar(struct termios *td, unsigned char *s)
679 {
680 
681 #ifdef VINTR
682 	td->c_cc[VINTR] = s[C_INTR];
683 #endif /* VINTR */
684 #ifdef VQUIT
685 	td->c_cc[VQUIT] = s[C_QUIT];
686 #endif /* VQUIT */
687 #ifdef VERASE
688 	td->c_cc[VERASE] = s[C_ERASE];
689 #endif /* VERASE */
690 #ifdef VKILL
691 	td->c_cc[VKILL] = s[C_KILL];
692 #endif /* VKILL */
693 #ifdef VEOF
694 	td->c_cc[VEOF] = s[C_EOF];
695 #endif /* VEOF */
696 #ifdef VEOL
697 	td->c_cc[VEOL] = s[C_EOL];
698 #endif /* VEOL */
699 #ifdef VEOL2
700 	td->c_cc[VEOL2] = s[C_EOL2];
701 #endif /* VEOL2 */
702 #ifdef VSWTCH
703 	td->c_cc[VSWTCH] = s[C_SWTCH];
704 #endif /* VSWTCH */
705 #ifdef VDSWTCH
706 	td->c_cc[VDSWTCH] = s[C_DSWTCH];
707 #endif /* VDSWTCH */
708 #ifdef VERASE2
709 	td->c_cc[VERASE2] = s[C_ERASE2];
710 #endif /* VERASE2 */
711 #ifdef VSTART
712 	td->c_cc[VSTART] = s[C_START];
713 #endif /* VSTART */
714 #ifdef VSTOP
715 	td->c_cc[VSTOP] = s[C_STOP];
716 #endif /* VSTOP */
717 #ifdef VWERASE
718 	td->c_cc[VWERASE] = s[C_WERASE];
719 #endif /* VWERASE */
720 #ifdef VSUSP
721 	td->c_cc[VSUSP] = s[C_SUSP];
722 #endif /* VSUSP */
723 #ifdef VDSUSP
724 	td->c_cc[VDSUSP] = s[C_DSUSP];
725 #endif /* VDSUSP */
726 #ifdef VREPRINT
727 	td->c_cc[VREPRINT] = s[C_REPRINT];
728 #endif /* VREPRINT */
729 #ifdef VDISCARD
730 	td->c_cc[VDISCARD] = s[C_DISCARD];
731 #endif /* VDISCARD */
732 #ifdef VLNEXT
733 	td->c_cc[VLNEXT] = s[C_LNEXT];
734 #endif /* VLNEXT */
735 #ifdef VSTATUS
736 	td->c_cc[VSTATUS] = s[C_STATUS];
737 #endif /* VSTATUS */
738 #ifdef VPAGE
739 	td->c_cc[VPAGE] = s[C_PAGE];
740 #endif /* VPAGE */
741 #ifdef VPGOFF
742 	td->c_cc[VPGOFF] = s[C_PGOFF];
743 #endif /* VPGOFF */
744 #ifdef VKILL2
745 	td->c_cc[VKILL2] = s[C_KILL2];
746 #endif /* VKILL2 */
747 #ifdef VMIN
748 	td->c_cc[VMIN] = s[C_MIN];
749 #endif /* VMIN */
750 #ifdef VTIME
751 	td->c_cc[VTIME] = s[C_TIME];
752 #endif /* VTIME */
753 }				/* tty__setchar */
754 
755 
756 /* tty_bind_char():
757  *	Rebind the editline functions
758  */
759 protected void
760 tty_bind_char(EditLine *el, int force)
761 {
762 
763 	unsigned char *t_n = el->el_tty.t_c[ED_IO];
764 	unsigned char *t_o = el->el_tty.t_ed.c_cc;
765 	unsigned char new[2], old[2];
766 	const ttymap_t *tp;
767 	el_action_t *map, *alt;
768 	const el_action_t *dmap, *dalt;
769 	new[1] = old[1] = '\0';
770 
771 	map = el->el_map.key;
772 	alt = el->el_map.alt;
773 	if (el->el_map.type == MAP_VI) {
774 		dmap = el->el_map.vii;
775 		dalt = el->el_map.vic;
776 	} else {
777 		dmap = el->el_map.emacs;
778 		dalt = NULL;
779 	}
780 
781 	for (tp = tty_map; tp->nch != -1; tp++) {
782 		new[0] = t_n[tp->nch];
783 		old[0] = t_o[tp->och];
784 		if (new[0] == old[0] && !force)
785 			continue;
786 		/* Put the old default binding back, and set the new binding */
787 		key_clear(el, map, (char *)old);
788 		map[old[0]] = dmap[old[0]];
789 		key_clear(el, map, (char *)new);
790 		/* MAP_VI == 1, MAP_EMACS == 0... */
791 		map[new[0]] = tp->bind[el->el_map.type];
792 		if (dalt) {
793 			key_clear(el, alt, (char *)old);
794 			alt[old[0]] = dalt[old[0]];
795 			key_clear(el, alt, (char *)new);
796 			alt[new[0]] = tp->bind[el->el_map.type + 1];
797 		}
798 	}
799 }
800 
801 
802 /* tty_rawmode():
803  * 	Set terminal into 1 character at a time mode.
804  */
805 protected int
806 tty_rawmode(EditLine *el)
807 {
808 
809 	if (el->el_tty.t_mode == ED_IO || el->el_tty.t_mode == QU_IO)
810 		return (0);
811 
812 	if (el->el_flags & EDIT_DISABLED)
813 		return (0);
814 
815 	if (tty_getty(el, &el->el_tty.t_ts) == -1) {
816 #ifdef DEBUG_TTY
817 		(void) fprintf(el->el_errfile, "tty_rawmode: tty_getty: %s\n",
818 		    strerror(errno));
819 #endif /* DEBUG_TTY */
820 		return (-1);
821 	}
822 	/*
823          * We always keep up with the eight bit setting and the speed of the
824          * tty. But only we only believe changes that are made to cooked mode!
825          */
826 	el->el_tty.t_eight = tty__geteightbit(&el->el_tty.t_ts);
827 	el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ts);
828 
829 	if (tty__getspeed(&el->el_tty.t_ex) != el->el_tty.t_speed ||
830 	    tty__getspeed(&el->el_tty.t_ed) != el->el_tty.t_speed) {
831 		(void) cfsetispeed(&el->el_tty.t_ex, el->el_tty.t_speed);
832 		(void) cfsetospeed(&el->el_tty.t_ex, el->el_tty.t_speed);
833 		(void) cfsetispeed(&el->el_tty.t_ed, el->el_tty.t_speed);
834 		(void) cfsetospeed(&el->el_tty.t_ed, el->el_tty.t_speed);
835 	}
836 	if (tty__cooked_mode(&el->el_tty.t_ts)) {
837 		if (el->el_tty.t_ts.c_cflag != el->el_tty.t_ex.c_cflag) {
838 			el->el_tty.t_ex.c_cflag =
839 			    el->el_tty.t_ts.c_cflag;
840 			el->el_tty.t_ex.c_cflag &=
841 			    ~el->el_tty.t_t[EX_IO][MD_CTL].t_clrmask;
842 			el->el_tty.t_ex.c_cflag |=
843 			    el->el_tty.t_t[EX_IO][MD_CTL].t_setmask;
844 
845 			el->el_tty.t_ed.c_cflag =
846 			    el->el_tty.t_ts.c_cflag;
847 			el->el_tty.t_ed.c_cflag &=
848 			    ~el->el_tty.t_t[ED_IO][MD_CTL].t_clrmask;
849 			el->el_tty.t_ed.c_cflag |=
850 			    el->el_tty.t_t[ED_IO][MD_CTL].t_setmask;
851 		}
852 		if ((el->el_tty.t_ts.c_lflag != el->el_tty.t_ex.c_lflag) &&
853 		    (el->el_tty.t_ts.c_lflag != el->el_tty.t_ed.c_lflag)) {
854 			el->el_tty.t_ex.c_lflag =
855 			    el->el_tty.t_ts.c_lflag;
856 			el->el_tty.t_ex.c_lflag &=
857 			    ~el->el_tty.t_t[EX_IO][MD_LIN].t_clrmask;
858 			el->el_tty.t_ex.c_lflag |=
859 			    el->el_tty.t_t[EX_IO][MD_LIN].t_setmask;
860 
861 			el->el_tty.t_ed.c_lflag =
862 			    el->el_tty.t_ts.c_lflag;
863 			el->el_tty.t_ed.c_lflag &=
864 			    ~el->el_tty.t_t[ED_IO][MD_LIN].t_clrmask;
865 			el->el_tty.t_ed.c_lflag |=
866 			    el->el_tty.t_t[ED_IO][MD_LIN].t_setmask;
867 		}
868 		if ((el->el_tty.t_ts.c_iflag != el->el_tty.t_ex.c_iflag) &&
869 		    (el->el_tty.t_ts.c_iflag != el->el_tty.t_ed.c_iflag)) {
870 			el->el_tty.t_ex.c_iflag =
871 			    el->el_tty.t_ts.c_iflag;
872 			el->el_tty.t_ex.c_iflag &=
873 			    ~el->el_tty.t_t[EX_IO][MD_INP].t_clrmask;
874 			el->el_tty.t_ex.c_iflag |=
875 			    el->el_tty.t_t[EX_IO][MD_INP].t_setmask;
876 
877 			el->el_tty.t_ed.c_iflag =
878 			    el->el_tty.t_ts.c_iflag;
879 			el->el_tty.t_ed.c_iflag &=
880 			    ~el->el_tty.t_t[ED_IO][MD_INP].t_clrmask;
881 			el->el_tty.t_ed.c_iflag |=
882 			    el->el_tty.t_t[ED_IO][MD_INP].t_setmask;
883 		}
884 		if ((el->el_tty.t_ts.c_oflag != el->el_tty.t_ex.c_oflag) &&
885 		    (el->el_tty.t_ts.c_oflag != el->el_tty.t_ed.c_oflag)) {
886 			el->el_tty.t_ex.c_oflag =
887 			    el->el_tty.t_ts.c_oflag;
888 			el->el_tty.t_ex.c_oflag &=
889 			    ~el->el_tty.t_t[EX_IO][MD_OUT].t_clrmask;
890 			el->el_tty.t_ex.c_oflag |=
891 			    el->el_tty.t_t[EX_IO][MD_OUT].t_setmask;
892 
893 			el->el_tty.t_ed.c_oflag =
894 			    el->el_tty.t_ts.c_oflag;
895 			el->el_tty.t_ed.c_oflag &=
896 			    ~el->el_tty.t_t[ED_IO][MD_OUT].t_clrmask;
897 			el->el_tty.t_ed.c_oflag |=
898 			    el->el_tty.t_t[ED_IO][MD_OUT].t_setmask;
899 		}
900 		if (tty__gettabs(&el->el_tty.t_ex) == 0)
901 			el->el_tty.t_tabs = 0;
902 		else
903 			el->el_tty.t_tabs = EL_CAN_TAB ? 1 : 0;
904 
905 		{
906 			int i;
907 
908 			tty__getchar(&el->el_tty.t_ts, el->el_tty.t_c[TS_IO]);
909 			/*
910 		         * Check if the user made any changes.
911 		         * If he did, then propagate the changes to the
912 		         * edit and execute data structures.
913 		         */
914 			for (i = 0; i < C_NCC; i++)
915 				if (el->el_tty.t_c[TS_IO][i] !=
916 				    el->el_tty.t_c[EX_IO][i])
917 					break;
918 
919 			if (i != C_NCC) {
920 				/*
921 				 * Propagate changes only to the unprotected
922 				 * chars that have been modified just now.
923 				 */
924 				for (i = 0; i < C_NCC; i++) {
925 					if (!((el->el_tty.t_t[ED_IO][MD_CHAR].t_setmask & C_SH(i)))
926 					    && (el->el_tty.t_c[TS_IO][i] != el->el_tty.t_c[EX_IO][i]))
927 						el->el_tty.t_c[ED_IO][i] = el->el_tty.t_c[TS_IO][i];
928 					if (el->el_tty.t_t[ED_IO][MD_CHAR].t_clrmask & C_SH(i))
929 						el->el_tty.t_c[ED_IO][i] = el->el_tty.t_vdisable;
930 				}
931 				tty_bind_char(el, 0);
932 				tty__setchar(&el->el_tty.t_ed, el->el_tty.t_c[ED_IO]);
933 
934 				for (i = 0; i < C_NCC; i++) {
935 					if (!((el->el_tty.t_t[EX_IO][MD_CHAR].t_setmask & C_SH(i)))
936 					    && (el->el_tty.t_c[TS_IO][i] != el->el_tty.t_c[EX_IO][i]))
937 						el->el_tty.t_c[EX_IO][i] = el->el_tty.t_c[TS_IO][i];
938 					if (el->el_tty.t_t[EX_IO][MD_CHAR].t_clrmask & C_SH(i))
939 						el->el_tty.t_c[EX_IO][i] = el->el_tty.t_vdisable;
940 				}
941 				tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
942 			}
943 		}
944 	}
945 	if (tty_setty(el, &el->el_tty.t_ed) == -1) {
946 #ifdef DEBUG_TTY
947 		(void) fprintf(el->el_errfile, "tty_rawmode: tty_setty: %s\n",
948 		    strerror(errno));
949 #endif /* DEBUG_TTY */
950 		return (-1);
951 	}
952 	el->el_tty.t_mode = ED_IO;
953 	return (0);
954 }
955 
956 
957 /* tty_cookedmode():
958  *	Set the tty back to normal mode
959  */
960 protected int
961 tty_cookedmode(EditLine *el)
962 {				/* set tty in normal setup */
963 
964 	if (el->el_tty.t_mode == EX_IO)
965 		return (0);
966 
967 	if (el->el_flags & EDIT_DISABLED)
968 		return (0);
969 
970 	if (tty_setty(el, &el->el_tty.t_ex) == -1) {
971 #ifdef DEBUG_TTY
972 		(void) fprintf(el->el_errfile,
973 		    "tty_cookedmode: tty_setty: %s\n",
974 		    strerror(errno));
975 #endif /* DEBUG_TTY */
976 		return (-1);
977 	}
978 	el->el_tty.t_mode = EX_IO;
979 	return (0);
980 }
981 
982 
983 /* tty_quotemode():
984  *	Turn on quote mode
985  */
986 protected int
987 tty_quotemode(EditLine *el)
988 {
989 	if (el->el_tty.t_mode == QU_IO)
990 		return (0);
991 
992 	el->el_tty.t_qu = el->el_tty.t_ed;
993 
994 	el->el_tty.t_qu.c_iflag &= ~el->el_tty.t_t[QU_IO][MD_INP].t_clrmask;
995 	el->el_tty.t_qu.c_iflag |= el->el_tty.t_t[QU_IO][MD_INP].t_setmask;
996 
997 	el->el_tty.t_qu.c_oflag &= ~el->el_tty.t_t[QU_IO][MD_OUT].t_clrmask;
998 	el->el_tty.t_qu.c_oflag |= el->el_tty.t_t[QU_IO][MD_OUT].t_setmask;
999 
1000 	el->el_tty.t_qu.c_cflag &= ~el->el_tty.t_t[QU_IO][MD_CTL].t_clrmask;
1001 	el->el_tty.t_qu.c_cflag |= el->el_tty.t_t[QU_IO][MD_CTL].t_setmask;
1002 
1003 	el->el_tty.t_qu.c_lflag &= ~el->el_tty.t_t[QU_IO][MD_LIN].t_clrmask;
1004 	el->el_tty.t_qu.c_lflag |= el->el_tty.t_t[QU_IO][MD_LIN].t_setmask;
1005 
1006 	if (tty_setty(el, &el->el_tty.t_qu) == -1) {
1007 #ifdef DEBUG_TTY
1008 		(void) fprintf(el->el_errfile, "QuoteModeOn: tty_setty: %s\n",
1009 		    strerror(errno));
1010 #endif /* DEBUG_TTY */
1011 		return (-1);
1012 	}
1013 	el->el_tty.t_mode = QU_IO;
1014 	return (0);
1015 }
1016 
1017 
1018 /* tty_noquotemode():
1019  *	Turn off quote mode
1020  */
1021 protected int
1022 tty_noquotemode(EditLine *el)
1023 {
1024 
1025 	if (el->el_tty.t_mode != QU_IO)
1026 		return (0);
1027 	if (tty_setty(el, &el->el_tty.t_ed) == -1) {
1028 #ifdef DEBUG_TTY
1029 		(void) fprintf(el->el_errfile, "QuoteModeOff: tty_setty: %s\n",
1030 		    strerror(errno));
1031 #endif /* DEBUG_TTY */
1032 		return (-1);
1033 	}
1034 	el->el_tty.t_mode = ED_IO;
1035 	return (0);
1036 }
1037 
1038 
1039 /* tty_stty():
1040  *	Stty builtin
1041  */
1042 protected int
1043 /*ARGSUSED*/
1044 tty_stty(EditLine *el, int argc, const char **argv)
1045 {
1046 	const ttymodes_t *m;
1047 	char x;
1048 	int aflag = 0;
1049 	const char *s, *d;
1050 	const char *name;
1051 	int z = EX_IO;
1052 
1053 	if (argv == NULL)
1054 		return (-1);
1055 	name = *argv++;
1056 
1057 	while (argv && *argv && argv[0][0] == '-' && argv[0][2] == '\0')
1058 		switch (argv[0][1]) {
1059 		case 'a':
1060 			aflag++;
1061 			argv++;
1062 			break;
1063 		case 'd':
1064 			argv++;
1065 			z = ED_IO;
1066 			break;
1067 		case 'x':
1068 			argv++;
1069 			z = EX_IO;
1070 			break;
1071 		case 'q':
1072 			argv++;
1073 			z = QU_IO;
1074 			break;
1075 		default:
1076 			(void) fprintf(el->el_errfile,
1077 			    "%s: Unknown switch `%c'.\n",
1078 			    name, argv[0][1]);
1079 			return (-1);
1080 		}
1081 
1082 	if (!argv || !*argv) {
1083 		int i = -1;
1084 		int len = 0, st = 0, cu;
1085 		for (m = ttymodes; m->m_name; m++) {
1086 			if (m->m_type != i) {
1087 				(void) fprintf(el->el_outfile, "%s%s",
1088 				    i != -1 ? "\n" : "",
1089 				    el->el_tty.t_t[z][m->m_type].t_name);
1090 				i = m->m_type;
1091 				st = len =
1092 				    strlen(el->el_tty.t_t[z][m->m_type].t_name);
1093 			}
1094 			x = (el->el_tty.t_t[z][i].t_setmask & m->m_value)
1095 			    ?  '+' : '\0';
1096 			x = (el->el_tty.t_t[z][i].t_clrmask & m->m_value)
1097 			    ? '-' : x;
1098 
1099 			if (x != '\0' || aflag) {
1100 
1101 				cu = strlen(m->m_name) + (x != '\0') + 1;
1102 
1103 				if (len + cu >= el->el_term.t_size.h) {
1104 					(void) fprintf(el->el_outfile, "\n%*s",
1105 					    st, "");
1106 					len = st + cu;
1107 				} else
1108 					len += cu;
1109 
1110 				if (x != '\0')
1111 					(void) fprintf(el->el_outfile, "%c%s ",
1112 					    x, m->m_name);
1113 				else
1114 					(void) fprintf(el->el_outfile, "%s ",
1115 					    m->m_name);
1116 			}
1117 		}
1118 		(void) fprintf(el->el_outfile, "\n");
1119 		return (0);
1120 	}
1121 	while (argv && (s = *argv++)) {
1122 		switch (*s) {
1123 		case '+':
1124 		case '-':
1125 			x = *s++;
1126 			break;
1127 		default:
1128 			x = '\0';
1129 			break;
1130 		}
1131 		d = s;
1132 		for (m = ttymodes; m->m_name; m++)
1133 			if (strcmp(m->m_name, d) == 0)
1134 				break;
1135 
1136 		if (!m->m_name) {
1137 			(void) fprintf(el->el_errfile,
1138 			    "%s: Invalid argument `%s'.\n", name, d);
1139 			return (-1);
1140 		}
1141 		switch (x) {
1142 		case '+':
1143 			el->el_tty.t_t[z][m->m_type].t_setmask |= m->m_value;
1144 			el->el_tty.t_t[z][m->m_type].t_clrmask &= ~m->m_value;
1145 			break;
1146 		case '-':
1147 			el->el_tty.t_t[z][m->m_type].t_setmask &= ~m->m_value;
1148 			el->el_tty.t_t[z][m->m_type].t_clrmask |= m->m_value;
1149 			break;
1150 		default:
1151 			el->el_tty.t_t[z][m->m_type].t_setmask &= ~m->m_value;
1152 			el->el_tty.t_t[z][m->m_type].t_clrmask &= ~m->m_value;
1153 			break;
1154 		}
1155 	}
1156 	return (0);
1157 }
1158 
1159 
1160 #ifdef notyet
1161 /* tty_printchar():
1162  *	DEbugging routine to print the tty characters
1163  */
1164 private void
1165 tty_printchar(EditLine *el, unsigned char *s)
1166 {
1167 	ttyperm_t *m;
1168 	int i;
1169 
1170 	for (i = 0; i < C_NCC; i++) {
1171 		for (m = el->el_tty.t_t; m->m_name; m++)
1172 			if (m->m_type == MD_CHAR && C_SH(i) == m->m_value)
1173 				break;
1174 		if (m->m_name)
1175 			(void) fprintf(el->el_errfile, "%s ^%c ",
1176 			    m->m_name, s[i] + 'A' - 1);
1177 		if (i % 5 == 0)
1178 			(void) fprintf(el->el_errfile, "\n");
1179 	}
1180 	(void) fprintf(el->el_errfile, "\n");
1181 }
1182 #endif /* notyet */
1183