lib/libedit/tty.c

   1 /*      $NetBSD: tty.c,v 1.47 2015/05/14 10:44:15 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 1.47 2015/05/14 10:44:15 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 <stdlib.h>     /* for abort */
  52 #include "el.h"
  53 #include "tty.h"
  54
  55 typedef struct ttymodes_t {
  56         const char *m_name;
  57         unsigned int m_value;
  58         int m_type;
  59 }          ttymodes_t;
  60
  61 typedef struct ttymap_t {
  62         Int nch, och;           /* Internal and termio rep of chars */
  63         el_action_t bind[3];    /* emacs, vi, and vi-cmd */
  64 } ttymap_t;
  65
  66
  67 private const ttyperm_t ttyperm = {
  68         {
  69                 {"iflag:", ICRNL, (INLCR | IGNCR)},
  70                 {"oflag:", (OPOST | ONLCR), ONLRET},
  71                 {"cflag:", 0, 0},
  72                 {"lflag:", (ISIG | ICANON | ECHO | ECHOE | ECHOCTL | IEXTEN),
  73                 (NOFLSH | ECHONL | EXTPROC | FLUSHO)},
  74                 {"chars:", 0, 0},
  75         },
  76         {
  77                 {"iflag:", (INLCR | ICRNL), IGNCR},
  78                 {"oflag:", (OPOST | ONLCR), ONLRET},
  79                 {"cflag:", 0, 0},
  80                 {"lflag:", ISIG,
  81                 (NOFLSH | ICANON | ECHO | ECHOK | ECHONL | EXTPROC | IEXTEN | FLUSHO)},
  82                 {"chars:", (C_SH(C_MIN) | C_SH(C_TIME) | C_SH(C_SWTCH) | C_SH(C_DSWTCH) |
  83                             C_SH(C_SUSP) | C_SH(C_DSUSP) | C_SH(C_EOL) | C_SH(C_DISCARD) |
  84                     C_SH(C_PGOFF) | C_SH(C_PAGE) | C_SH(C_STATUS)), 0}
  85         },
  86         {
  87                 {"iflag:", 0, IXON | IXOFF | INLCR | ICRNL},
  88                 {"oflag:", 0, 0},
  89                 {"cflag:", 0, 0},
  90                 {"lflag:", 0, ISIG | IEXTEN},
  91                 {"chars:", 0, 0},
  92         }
  93 };
  94
  95 private const ttychar_t ttychar = {
  96         {
  97                 CINTR, CQUIT, CERASE, CKILL,
  98                 CEOF, CEOL, CEOL2, CSWTCH,
  99                 CDSWTCH, CERASE2, CSTART, CSTOP,
 100                 CWERASE, CSUSP, CDSUSP, CREPRINT,
 101                 CDISCARD, CLNEXT, CSTATUS, CPAGE,
 102                 CPGOFF, CKILL2, CBRK, CMIN,
 103                 CTIME
 104         },
 105         {
 106                 CINTR, CQUIT, CERASE, CKILL,
 107                 _POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE,
 108                 _POSIX_VDISABLE, CERASE2, CSTART, CSTOP,
 109                 _POSIX_VDISABLE, CSUSP, _POSIX_VDISABLE, _POSIX_VDISABLE,
 110                 CDISCARD, _POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE,
 111                 _POSIX_VDISABLE, _POSIX_VDISABLE, _POSIX_VDISABLE, 1,
 112                 0
 113         },
 114         {
 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, 0, 0, 0,
 121                 0
 122         }
 123 };
 124
 125 private const ttymap_t tty_map[] = {
 126 #ifdef VERASE
 127         {C_ERASE, VERASE,
 128         {EM_DELETE_PREV_CHAR, VI_DELETE_PREV_CHAR, ED_PREV_CHAR}},
 129 #endif /* VERASE */
 130 #ifdef VERASE2
 131         {C_ERASE2, VERASE2,
 132         {EM_DELETE_PREV_CHAR, VI_DELETE_PREV_CHAR, ED_PREV_CHAR}},
 133 #endif /* VERASE2 */
 134 #ifdef VKILL
 135         {C_KILL, VKILL,
 136         {EM_KILL_LINE, VI_KILL_LINE_PREV, ED_UNASSIGNED}},
 137 #endif /* VKILL */
 138 #ifdef VKILL2
 139         {C_KILL2, VKILL2,
 140         {EM_KILL_LINE, VI_KILL_LINE_PREV, ED_UNASSIGNED}},
 141 #endif /* VKILL2 */
 142 #ifdef VEOF
 143         {C_EOF, VEOF,
 144         {EM_DELETE_OR_LIST, VI_LIST_OR_EOF, ED_UNASSIGNED}},
 145 #endif /* VEOF */
 146 #ifdef VWERASE
 147         {C_WERASE, VWERASE,
 148         {ED_DELETE_PREV_WORD, ED_DELETE_PREV_WORD, ED_PREV_WORD}},
 149 #endif /* VWERASE */
 150 #ifdef VREPRINT
 151         {C_REPRINT, VREPRINT,
 152         {ED_REDISPLAY, ED_INSERT, ED_REDISPLAY}},
 153 #endif /* VREPRINT */
 154 #ifdef VLNEXT
 155         {C_LNEXT, VLNEXT,
 156         {ED_QUOTED_INSERT, ED_QUOTED_INSERT, ED_UNASSIGNED}},
 157 #endif /* VLNEXT */
 158         {(Int)-1, (Int)-1,
 159         {ED_UNASSIGNED, ED_UNASSIGNED, ED_UNASSIGNED}}
 160 };
 161
 162 private const ttymodes_t ttymodes[] = {
 163 #ifdef  IGNBRK
 164         {"ignbrk", IGNBRK, MD_INP},
 165 #endif /* IGNBRK */
 166 #ifdef  BRKINT
 167         {"brkint", BRKINT, MD_INP},
 168 #endif /* BRKINT */
 169 #ifdef  IGNPAR
 170         {"ignpar", IGNPAR, MD_INP},
 171 #endif /* IGNPAR */
 172 #ifdef  PARMRK
 173         {"parmrk", PARMRK, MD_INP},
 174 #endif /* PARMRK */
 175 #ifdef  INPCK
 176         {"inpck", INPCK, MD_INP},
 177 #endif /* INPCK */
 178 #ifdef  ISTRIP
 179         {"istrip", ISTRIP, MD_INP},
 180 #endif /* ISTRIP */
 181 #ifdef  INLCR
 182         {"inlcr", INLCR, MD_INP},
 183 #endif /* INLCR */
 184 #ifdef  IGNCR
 185         {"igncr", IGNCR, MD_INP},
 186 #endif /* IGNCR */
 187 #ifdef  ICRNL
 188         {"icrnl", ICRNL, MD_INP},
 189 #endif /* ICRNL */
 190 #ifdef  IUCLC
 191         {"iuclc", IUCLC, MD_INP},
 192 #endif /* IUCLC */
 193 #ifdef  IXON
 194         {"ixon", IXON, MD_INP},
 195 #endif /* IXON */
 196 #ifdef  IXANY
 197         {"ixany", IXANY, MD_INP},
 198 #endif /* IXANY */
 199 #ifdef  IXOFF
 200         {"ixoff", IXOFF, MD_INP},
 201 #endif /* IXOFF */
 202 #ifdef  IMAXBEL
 203         {"imaxbel", IMAXBEL, MD_INP},
 204 #endif /* IMAXBEL */
 205
 206 #ifdef  OPOST
 207         {"opost", OPOST, MD_OUT},
 208 #endif /* OPOST */
 209 #ifdef  OLCUC
 210         {"olcuc", OLCUC, MD_OUT},
 211 #endif /* OLCUC */
 212 #ifdef  ONLCR
 213         {"onlcr", ONLCR, MD_OUT},
 214 #endif /* ONLCR */
 215 #ifdef  OCRNL
 216         {"ocrnl", OCRNL, MD_OUT},
 217 #endif /* OCRNL */
 218 #ifdef  ONOCR
 219         {"onocr", ONOCR, MD_OUT},
 220 #endif /* ONOCR */
 221 #ifdef ONOEOT
 222         {"onoeot", ONOEOT, MD_OUT},
 223 #endif /* ONOEOT */
 224 #ifdef  ONLRET
 225         {"onlret", ONLRET, MD_OUT},
 226 #endif /* ONLRET */
 227 #ifdef  OFILL
 228         {"ofill", OFILL, MD_OUT},
 229 #endif /* OFILL */
 230 #ifdef  OFDEL
 231         {"ofdel", OFDEL, MD_OUT},
 232 #endif /* OFDEL */
 233 #ifdef  NLDLY
 234         {"nldly", NLDLY, MD_OUT},
 235 #endif /* NLDLY */
 236 #ifdef  CRDLY
 237         {"crdly", CRDLY, MD_OUT},
 238 #endif /* CRDLY */
 239 #ifdef  TABDLY
 240         {"tabdly", TABDLY, MD_OUT},
 241 #endif /* TABDLY */
 242 #ifdef  XTABS
 243         {"xtabs", XTABS, MD_OUT},
 244 #endif /* XTABS */
 245 #ifdef  BSDLY
 246         {"bsdly", BSDLY, MD_OUT},
 247 #endif /* BSDLY */
 248 #ifdef  VTDLY
 249         {"vtdly", VTDLY, MD_OUT},
 250 #endif /* VTDLY */
 251 #ifdef  FFDLY
 252         {"ffdly", FFDLY, MD_OUT},
 253 #endif /* FFDLY */
 254 #ifdef  PAGEOUT
 255         {"pageout", PAGEOUT, MD_OUT},
 256 #endif /* PAGEOUT */
 257 #ifdef  WRAP
 258         {"wrap", WRAP, MD_OUT},
 259 #endif /* WRAP */
 260
 261 #ifdef  CIGNORE
 262         {"cignore", CIGNORE, MD_CTL},
 263 #endif /* CBAUD */
 264 #ifdef  CBAUD
 265         {"cbaud", CBAUD, MD_CTL},
 266 #endif /* CBAUD */
 267 #ifdef  CSTOPB
 268         {"cstopb", CSTOPB, MD_CTL},
 269 #endif /* CSTOPB */
 270 #ifdef  CREAD
 271         {"cread", CREAD, MD_CTL},
 272 #endif /* CREAD */
 273 #ifdef  PARENB
 274         {"parenb", PARENB, MD_CTL},
 275 #endif /* PARENB */
 276 #ifdef  PARODD
 277         {"parodd", PARODD, MD_CTL},
 278 #endif /* PARODD */
 279 #ifdef  HUPCL
 280         {"hupcl", HUPCL, MD_CTL},
 281 #endif /* HUPCL */
 282 #ifdef  CLOCAL
 283         {"clocal", CLOCAL, MD_CTL},
 284 #endif /* CLOCAL */
 285 #ifdef  LOBLK
 286         {"loblk", LOBLK, MD_CTL},
 287 #endif /* LOBLK */
 288 #ifdef  CIBAUD
 289         {"cibaud", CIBAUD, MD_CTL},
 290 #endif /* CIBAUD */
 291 #ifdef CRTSCTS
 292 #ifdef CCTS_OFLOW
 293         {"ccts_oflow", CCTS_OFLOW, MD_CTL},
 294 #else
 295         {"crtscts", CRTSCTS, MD_CTL},
 296 #endif /* CCTS_OFLOW */
 297 #endif /* CRTSCTS */
 298 #ifdef CRTS_IFLOW
 299         {"crts_iflow", CRTS_IFLOW, MD_CTL},
 300 #endif /* CRTS_IFLOW */
 301 #ifdef CDTRCTS
 302         {"cdtrcts", CDTRCTS, MD_CTL},
 303 #endif /* CDTRCTS */
 304 #ifdef MDMBUF
 305         {"mdmbuf", MDMBUF, MD_CTL},
 306 #endif /* MDMBUF */
 307 #ifdef RCV1EN
 308         {"rcv1en", RCV1EN, MD_CTL},
 309 #endif /* RCV1EN */
 310 #ifdef XMT1EN
 311         {"xmt1en", XMT1EN, MD_CTL},
 312 #endif /* XMT1EN */
 313
 314 #ifdef  ISIG
 315         {"isig", ISIG, MD_LIN},
 316 #endif /* ISIG */
 317 #ifdef  ICANON
 318         {"icanon", ICANON, MD_LIN},
 319 #endif /* ICANON */
 320 #ifdef  XCASE
 321         {"xcase", XCASE, MD_LIN},
 322 #endif /* XCASE */
 323 #ifdef  ECHO
 324         {"echo", ECHO, MD_LIN},
 325 #endif /* ECHO */
 326 #ifdef  ECHOE
 327         {"echoe", ECHOE, MD_LIN},
 328 #endif /* ECHOE */
 329 #ifdef  ECHOK
 330         {"echok", ECHOK, MD_LIN},
 331 #endif /* ECHOK */
 332 #ifdef  ECHONL
 333         {"echonl", ECHONL, MD_LIN},
 334 #endif /* ECHONL */
 335 #ifdef  NOFLSH
 336         {"noflsh", NOFLSH, MD_LIN},
 337 #endif /* NOFLSH */
 338 #ifdef  TOSTOP
 339         {"tostop", TOSTOP, MD_LIN},
 340 #endif /* TOSTOP */
 341 #ifdef  ECHOCTL
 342         {"echoctl", ECHOCTL, MD_LIN},
 343 #endif /* ECHOCTL */
 344 #ifdef  ECHOPRT
 345         {"echoprt", ECHOPRT, MD_LIN},
 346 #endif /* ECHOPRT */
 347 #ifdef  ECHOKE
 348         {"echoke", ECHOKE, MD_LIN},
 349 #endif /* ECHOKE */
 350 #ifdef  DEFECHO
 351         {"defecho", DEFECHO, MD_LIN},
 352 #endif /* DEFECHO */
 353 #ifdef  FLUSHO
 354         {"flusho", FLUSHO, MD_LIN},
 355 #endif /* FLUSHO */
 356 #ifdef  PENDIN
 357         {"pendin", PENDIN, MD_LIN},
 358 #endif /* PENDIN */
 359 #ifdef  IEXTEN
 360         {"iexten", IEXTEN, MD_LIN},
 361 #endif /* IEXTEN */
 362 #ifdef  NOKERNINFO
 363         {"nokerninfo", NOKERNINFO, MD_LIN},
 364 #endif /* NOKERNINFO */
 365 #ifdef  ALTWERASE
 366         {"altwerase", ALTWERASE, MD_LIN},
 367 #endif /* ALTWERASE */
 368 #ifdef  EXTPROC
 369         {"extproc", EXTPROC, MD_LIN},
 370 #endif /* EXTPROC */
 371
 372 #if defined(VINTR)
 373         {"intr", C_SH(C_INTR), MD_CHAR},
 374 #endif /* VINTR */
 375 #if defined(VQUIT)
 376         {"quit", C_SH(C_QUIT), MD_CHAR},
 377 #endif /* VQUIT */
 378 #if defined(VERASE)
 379         {"erase", C_SH(C_ERASE), MD_CHAR},
 380 #endif /* VERASE */
 381 #if defined(VKILL)
 382         {"kill", C_SH(C_KILL), MD_CHAR},
 383 #endif /* VKILL */
 384 #if defined(VEOF)
 385         {"eof", C_SH(C_EOF), MD_CHAR},
 386 #endif /* VEOF */
 387 #if defined(VEOL)
 388         {"eol", C_SH(C_EOL), MD_CHAR},
 389 #endif /* VEOL */
 390 #if defined(VEOL2)
 391         {"eol2", C_SH(C_EOL2), MD_CHAR},
 392 #endif /* VEOL2 */
 393 #if defined(VSWTCH)
 394         {"swtch", C_SH(C_SWTCH), MD_CHAR},
 395 #endif /* VSWTCH */
 396 #if defined(VDSWTCH)
 397         {"dswtch", C_SH(C_DSWTCH), MD_CHAR},
 398 #endif /* VDSWTCH */
 399 #if defined(VERASE2)
 400         {"erase2", C_SH(C_ERASE2), MD_CHAR},
 401 #endif /* VERASE2 */
 402 #if defined(VSTART)
 403         {"start", C_SH(C_START), MD_CHAR},
 404 #endif /* VSTART */
 405 #if defined(VSTOP)
 406         {"stop", C_SH(C_STOP), MD_CHAR},
 407 #endif /* VSTOP */
 408 #if defined(VWERASE)
 409         {"werase", C_SH(C_WERASE), MD_CHAR},
 410 #endif /* VWERASE */
 411 #if defined(VSUSP)
 412         {"susp", C_SH(C_SUSP), MD_CHAR},
 413 #endif /* VSUSP */
 414 #if defined(VDSUSP)
 415         {"dsusp", C_SH(C_DSUSP), MD_CHAR},
 416 #endif /* VDSUSP */
 417 #if defined(VREPRINT)
 418         {"reprint", C_SH(C_REPRINT), MD_CHAR},
 419 #endif /* VREPRINT */
 420 #if defined(VDISCARD)
 421         {"discard", C_SH(C_DISCARD), MD_CHAR},
 422 #endif /* VDISCARD */
 423 #if defined(VLNEXT)
 424         {"lnext", C_SH(C_LNEXT), MD_CHAR},
 425 #endif /* VLNEXT */
 426 #if defined(VSTATUS)
 427         {"status", C_SH(C_STATUS), MD_CHAR},
 428 #endif /* VSTATUS */
 429 #if defined(VPAGE)
 430         {"page", C_SH(C_PAGE), MD_CHAR},
 431 #endif /* VPAGE */
 432 #if defined(VPGOFF)
 433         {"pgoff", C_SH(C_PGOFF), MD_CHAR},
 434 #endif /* VPGOFF */
 435 #if defined(VKILL2)
 436         {"kill2", C_SH(C_KILL2), MD_CHAR},
 437 #endif /* VKILL2 */
 438 #if defined(VBRK)
 439         {"brk", C_SH(C_BRK), MD_CHAR},
 440 #endif /* VBRK */
 441 #if defined(VMIN)
 442         {"min", C_SH(C_MIN), MD_CHAR},
 443 #endif /* VMIN */
 444 #if defined(VTIME)
 445         {"time", C_SH(C_TIME), MD_CHAR},
 446 #endif /* VTIME */
 447         {NULL, 0, -1},
 448 };
 449
 450
 451
 452 #define tty__gettabs(td)        ((((td)->c_oflag & TAB3) == TAB3) ? 0 : 1)
 453 #define tty__geteightbit(td)    (((td)->c_cflag & CSIZE) == CS8)
 454 #define tty__cooked_mode(td)    ((td)->c_lflag & ICANON)
 455
 456 private int     tty_getty(EditLine *, struct termios *);
 457 private int     tty_setty(EditLine *, int, const struct termios *);
 458 private int     tty__getcharindex(int);
 459 private void    tty__getchar(struct termios *, unsigned char *);
 460 private void    tty__setchar(struct termios *, unsigned char *);
 461 private speed_t tty__getspeed(struct termios *);
 462 private int     tty_setup(EditLine *);
 463 private void    tty_setup_flags(EditLine *, struct termios *, int);
 464
 465 #define t_qu    t_ts
 466
 467 /* tty_getty():
 468  *      Wrapper for tcgetattr to handle EINTR
 469  */
 470 private int
 471 tty_getty(EditLine *el, struct termios *t)
 472 {
 473         int rv;
 474         while ((rv = tcgetattr(el->el_infd, t)) == -1 && errno == EINTR)
 475                 continue;
 476         return rv;
 477 }
 478
 479 /* tty_setty():
 480  *      Wrapper for tcsetattr to handle EINTR
 481  */
 482 private int
 483 tty_setty(EditLine *el, int action, const struct termios *t)
 484 {
 485         int rv;
 486         while ((rv = tcsetattr(el->el_infd, action, t)) == -1 && errno == EINTR)
 487                 continue;
 488         return rv;
 489 }
 490
 491 /* tty_setup():
 492  *      Get the tty parameters and initialize the editing state
 493  */
 494 private int
 495 tty_setup(EditLine *el)
 496 {
 497         int rst = 1;
 498
 499         if (el->el_flags & EDIT_DISABLED)
 500                 return 0;
 501
 502         if (!isatty(el->el_outfd)) {
 503 #ifdef DEBUG_TTY
 504                 (void) fprintf(el->el_errfile, "%s: isatty: %s\n", __func__,
 505                     strerror(errno));
 506 #endif /* DEBUG_TTY */
 507                 return -1;
 508         }
 509         if (tty_getty(el, &el->el_tty.t_or) == -1) {
 510 #ifdef DEBUG_TTY
 511                 (void) fprintf(el->el_errfile, "%s: tty_getty: %s\n", __func__,
 512                     strerror(errno));
 513 #endif /* DEBUG_TTY */
 514                 return -1;
 515         }
 516         el->el_tty.t_ts = el->el_tty.t_ex = el->el_tty.t_ed = el->el_tty.t_or;
 517
 518         el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ex);
 519         el->el_tty.t_tabs = tty__gettabs(&el->el_tty.t_ex);
 520         el->el_tty.t_eight = tty__geteightbit(&el->el_tty.t_ex);
 521
 522         tty_setup_flags(el, &el->el_tty.t_ex, EX_IO);
 523
 524         /*
 525          * Reset the tty chars to reasonable defaults
 526          * If they are disabled, then enable them.
 527          */
 528         if (rst) {
 529                 if (tty__cooked_mode(&el->el_tty.t_ts)) {
 530                         tty__getchar(&el->el_tty.t_ts, el->el_tty.t_c[TS_IO]);
 531                         /*
 532                          * Don't affect CMIN and CTIME for the editor mode
 533                          */
 534                         for (rst = 0; rst < C_NCC - 2; rst++)
 535                                 if (el->el_tty.t_c[TS_IO][rst] !=
 536                                       el->el_tty.t_vdisable
 537                                     && el->el_tty.t_c[ED_IO][rst] !=
 538                                       el->el_tty.t_vdisable)
 539                                         el->el_tty.t_c[ED_IO][rst] =
 540                                             el->el_tty.t_c[TS_IO][rst];
 541                         for (rst = 0; rst < C_NCC; rst++)
 542                                 if (el->el_tty.t_c[TS_IO][rst] !=
 543                                     el->el_tty.t_vdisable)
 544                                         el->el_tty.t_c[EX_IO][rst] =
 545                                             el->el_tty.t_c[TS_IO][rst];
 546                 }
 547                 tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
 548                 if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ex) == -1) {
 549 #ifdef DEBUG_TTY
 550                         (void) fprintf(el->el_errfile, "%s: tty_setty: %s\n",
 551                             __func__, strerror(errno));
 552 #endif /* DEBUG_TTY */
 553                         return -1;
 554                 }
 555         }
 556
 557         tty_setup_flags(el, &el->el_tty.t_ed, ED_IO);
 558
 559         tty__setchar(&el->el_tty.t_ed, el->el_tty.t_c[ED_IO]);
 560         tty_bind_char(el, 1);
 561         return 0;
 562 }
 563
 564 protected int
 565 tty_init(EditLine *el)
 566 {
 567
 568         el->el_tty.t_mode = EX_IO;
 569         el->el_tty.t_vdisable = _POSIX_VDISABLE;
 570         (void) memcpy(el->el_tty.t_t, ttyperm, sizeof(ttyperm_t));
 571         (void) memcpy(el->el_tty.t_c, ttychar, sizeof(ttychar_t));
 572         return tty_setup(el);
 573 }
 574
 575
 576 /* tty_end():
 577  *      Restore the tty to its original settings
 578  */
 579 protected void
 580 /*ARGSUSED*/
 581 tty_end(EditLine *el)
 582 {
 583         if (tty_setty(el, TCSAFLUSH, &el->el_tty.t_or) == -1) {
 584 #ifdef DEBUG_TTY
 585                 (void) fprintf(el->el_errfile,
 586                     "%s: tty_setty: %s\n", __func__, strerror(errno));
 587 #endif /* DEBUG_TTY */
 588         }
 589 }
 590
 591
 592 /* tty__getspeed():
 593  *      Get the tty speed
 594  */
 595 private speed_t
 596 tty__getspeed(struct termios *td)
 597 {
 598         speed_t spd;
 599
 600         if ((spd = cfgetispeed(td)) == 0)
 601                 spd = cfgetospeed(td);
 602         return spd;
 603 }
 604
 605 /* tty__getspeed():
 606  *      Return the index of the asked char in the c_cc array
 607  */
 608 private int
 609 tty__getcharindex(int i)
 610 {
 611         switch (i) {
 612 #ifdef VINTR
 613         case C_INTR:
 614                 return VINTR;
 615 #endif /* VINTR */
 616 #ifdef VQUIT
 617         case C_QUIT:
 618                 return VQUIT;
 619 #endif /* VQUIT */
 620 #ifdef VERASE
 621         case C_ERASE:
 622                 return VERASE;
 623 #endif /* VERASE */
 624 #ifdef VKILL
 625         case C_KILL:
 626                 return VKILL;
 627 #endif /* VKILL */
 628 #ifdef VEOF
 629         case C_EOF:
 630                 return VEOF;
 631 #endif /* VEOF */
 632 #ifdef VEOL
 633         case C_EOL:
 634                 return VEOL;
 635 #endif /* VEOL */
 636 #ifdef VEOL2
 637         case C_EOL2:
 638                 return VEOL2;
 639 #endif /* VEOL2 */
 640 #ifdef VSWTCH
 641         case C_SWTCH:
 642                 return VSWTCH;
 643 #endif /* VSWTCH */
 644 #ifdef VDSWTCH
 645         case C_DSWTCH:
 646                 return VDSWTCH;
 647 #endif /* VDSWTCH */
 648 #ifdef VERASE2
 649         case C_ERASE2:
 650                 return VERASE2;
 651 #endif /* VERASE2 */
 652 #ifdef VSTART
 653         case C_START:
 654                 return VSTART;
 655 #endif /* VSTART */
 656 #ifdef VSTOP
 657         case C_STOP:
 658                 return VSTOP;
 659 #endif /* VSTOP */
 660 #ifdef VWERASE
 661         case C_WERASE:
 662                 return VWERASE;
 663 #endif /* VWERASE */
 664 #ifdef VSUSP
 665         case C_SUSP:
 666                 return VSUSP;
 667 #endif /* VSUSP */
 668 #ifdef VDSUSP
 669         case C_DSUSP:
 670                 return VDSUSP;
 671 #endif /* VDSUSP */
 672 #ifdef VREPRINT
 673         case C_REPRINT:
 674                 return VREPRINT;
 675 #endif /* VREPRINT */
 676 #ifdef VDISCARD
 677         case C_DISCARD:
 678                 return VDISCARD;
 679 #endif /* VDISCARD */
 680 #ifdef VLNEXT
 681         case C_LNEXT:
 682                 return VLNEXT;
 683 #endif /* VLNEXT */
 684 #ifdef VSTATUS
 685         case C_STATUS:
 686                 return VSTATUS;
 687 #endif /* VSTATUS */
 688 #ifdef VPAGE
 689         case C_PAGE:
 690                 return VPAGE;
 691 #endif /* VPAGE */
 692 #ifdef VPGOFF
 693         case C_PGOFF:
 694                 return VPGOFF;
 695 #endif /* VPGOFF */
 696 #ifdef VKILL2
 697         case C_KILL2:
 698                 return VKILL2;
 699 #endif /* KILL2 */
 700 #ifdef VMIN
 701         case C_MIN:
 702                 return VMIN;
 703 #endif /* VMIN */
 704 #ifdef VTIME
 705         case C_TIME:
 706                 return VTIME;
 707 #endif /* VTIME */
 708         default:
 709                 return -1;
 710         }
 711 }
 712
 713 /* tty__getchar():
 714  *      Get the tty characters
 715  */
 716 private void
 717 tty__getchar(struct termios *td, unsigned char *s)
 718 {
 719
 720 #ifdef VINTR
 721         s[C_INTR] = td->c_cc[VINTR];
 722 #endif /* VINTR */
 723 #ifdef VQUIT
 724         s[C_QUIT] = td->c_cc[VQUIT];
 725 #endif /* VQUIT */
 726 #ifdef VERASE
 727         s[C_ERASE] = td->c_cc[VERASE];
 728 #endif /* VERASE */
 729 #ifdef VKILL
 730         s[C_KILL] = td->c_cc[VKILL];
 731 #endif /* VKILL */
 732 #ifdef VEOF
 733         s[C_EOF] = td->c_cc[VEOF];
 734 #endif /* VEOF */
 735 #ifdef VEOL
 736         s[C_EOL] = td->c_cc[VEOL];
 737 #endif /* VEOL */
 738 #ifdef VEOL2
 739         s[C_EOL2] = td->c_cc[VEOL2];
 740 #endif /* VEOL2 */
 741 #ifdef VSWTCH
 742         s[C_SWTCH] = td->c_cc[VSWTCH];
 743 #endif /* VSWTCH */
 744 #ifdef VDSWTCH
 745         s[C_DSWTCH] = td->c_cc[VDSWTCH];
 746 #endif /* VDSWTCH */
 747 #ifdef VERASE2
 748         s[C_ERASE2] = td->c_cc[VERASE2];
 749 #endif /* VERASE2 */
 750 #ifdef VSTART
 751         s[C_START] = td->c_cc[VSTART];
 752 #endif /* VSTART */
 753 #ifdef VSTOP
 754         s[C_STOP] = td->c_cc[VSTOP];
 755 #endif /* VSTOP */
 756 #ifdef VWERASE
 757         s[C_WERASE] = td->c_cc[VWERASE];
 758 #endif /* VWERASE */
 759 #ifdef VSUSP
 760         s[C_SUSP] = td->c_cc[VSUSP];
 761 #endif /* VSUSP */
 762 #ifdef VDSUSP
 763         s[C_DSUSP] = td->c_cc[VDSUSP];
 764 #endif /* VDSUSP */
 765 #ifdef VREPRINT
 766         s[C_REPRINT] = td->c_cc[VREPRINT];
 767 #endif /* VREPRINT */
 768 #ifdef VDISCARD
 769         s[C_DISCARD] = td->c_cc[VDISCARD];
 770 #endif /* VDISCARD */
 771 #ifdef VLNEXT
 772         s[C_LNEXT] = td->c_cc[VLNEXT];
 773 #endif /* VLNEXT */
 774 #ifdef VSTATUS
 775         s[C_STATUS] = td->c_cc[VSTATUS];
 776 #endif /* VSTATUS */
 777 #ifdef VPAGE
 778         s[C_PAGE] = td->c_cc[VPAGE];
 779 #endif /* VPAGE */
 780 #ifdef VPGOFF
 781         s[C_PGOFF] = td->c_cc[VPGOFF];
 782 #endif /* VPGOFF */
 783 #ifdef VKILL2
 784         s[C_KILL2] = td->c_cc[VKILL2];
 785 #endif /* KILL2 */
 786 #ifdef VMIN
 787         s[C_MIN] = td->c_cc[VMIN];
 788 #endif /* VMIN */
 789 #ifdef VTIME
 790         s[C_TIME] = td->c_cc[VTIME];
 791 #endif /* VTIME */
 792 }                               /* tty__getchar */
 793
 794
 795 /* tty__setchar():
 796  *      Set the tty characters
 797  */
 798 private void
 799 tty__setchar(struct termios *td, unsigned char *s)
 800 {
 801
 802 #ifdef VINTR
 803         td->c_cc[VINTR] = s[C_INTR];
 804 #endif /* VINTR */
 805 #ifdef VQUIT
 806         td->c_cc[VQUIT] = s[C_QUIT];
 807 #endif /* VQUIT */
 808 #ifdef VERASE
 809         td->c_cc[VERASE] = s[C_ERASE];
 810 #endif /* VERASE */
 811 #ifdef VKILL
 812         td->c_cc[VKILL] = s[C_KILL];
 813 #endif /* VKILL */
 814 #ifdef VEOF
 815         td->c_cc[VEOF] = s[C_EOF];
 816 #endif /* VEOF */
 817 #ifdef VEOL
 818         td->c_cc[VEOL] = s[C_EOL];
 819 #endif /* VEOL */
 820 #ifdef VEOL2
 821         td->c_cc[VEOL2] = s[C_EOL2];
 822 #endif /* VEOL2 */
 823 #ifdef VSWTCH
 824         td->c_cc[VSWTCH] = s[C_SWTCH];
 825 #endif /* VSWTCH */
 826 #ifdef VDSWTCH
 827         td->c_cc[VDSWTCH] = s[C_DSWTCH];
 828 #endif /* VDSWTCH */
 829 #ifdef VERASE2
 830         td->c_cc[VERASE2] = s[C_ERASE2];
 831 #endif /* VERASE2 */
 832 #ifdef VSTART
 833         td->c_cc[VSTART] = s[C_START];
 834 #endif /* VSTART */
 835 #ifdef VSTOP
 836         td->c_cc[VSTOP] = s[C_STOP];
 837 #endif /* VSTOP */
 838 #ifdef VWERASE
 839         td->c_cc[VWERASE] = s[C_WERASE];
 840 #endif /* VWERASE */
 841 #ifdef VSUSP
 842         td->c_cc[VSUSP] = s[C_SUSP];
 843 #endif /* VSUSP */
 844 #ifdef VDSUSP
 845         td->c_cc[VDSUSP] = s[C_DSUSP];
 846 #endif /* VDSUSP */
 847 #ifdef VREPRINT
 848         td->c_cc[VREPRINT] = s[C_REPRINT];
 849 #endif /* VREPRINT */
 850 #ifdef VDISCARD
 851         td->c_cc[VDISCARD] = s[C_DISCARD];
 852 #endif /* VDISCARD */
 853 #ifdef VLNEXT
 854         td->c_cc[VLNEXT] = s[C_LNEXT];
 855 #endif /* VLNEXT */
 856 #ifdef VSTATUS
 857         td->c_cc[VSTATUS] = s[C_STATUS];
 858 #endif /* VSTATUS */
 859 #ifdef VPAGE
 860         td->c_cc[VPAGE] = s[C_PAGE];
 861 #endif /* VPAGE */
 862 #ifdef VPGOFF
 863         td->c_cc[VPGOFF] = s[C_PGOFF];
 864 #endif /* VPGOFF */
 865 #ifdef VKILL2
 866         td->c_cc[VKILL2] = s[C_KILL2];
 867 #endif /* VKILL2 */
 868 #ifdef VMIN
 869         td->c_cc[VMIN] = s[C_MIN];
 870 #endif /* VMIN */
 871 #ifdef VTIME
 872         td->c_cc[VTIME] = s[C_TIME];
 873 #endif /* VTIME */
 874 }                               /* tty__setchar */
 875
 876
 877 /* tty_bind_char():
 878  *      Rebind the editline functions
 879  */
 880 protected void
 881 tty_bind_char(EditLine *el, int force)
 882 {
 883
 884         unsigned char *t_n = el->el_tty.t_c[ED_IO];
 885         unsigned char *t_o = el->el_tty.t_ed.c_cc;
 886         Char new[2], old[2];
 887         const ttymap_t *tp;
 888         el_action_t *map, *alt;
 889         const el_action_t *dmap, *dalt;
 890         new[1] = old[1] = '\0';
 891
 892         map = el->el_map.key;
 893         alt = el->el_map.alt;
 894         if (el->el_map.type == MAP_VI) {
 895                 dmap = el->el_map.vii;
 896                 dalt = el->el_map.vic;
 897         } else {
 898                 dmap = el->el_map.emacs;
 899                 dalt = NULL;
 900         }
 901
 902         for (tp = tty_map; tp->nch != (Int)-1; tp++) {
 903                 new[0] = t_n[tp->nch];
 904                 old[0] = t_o[tp->och];
 905                 if (new[0] == old[0] && !force)
 906                         continue;
 907                 /* Put the old default binding back, and set the new binding */
 908                 keymacro_clear(el, map, old);
 909                 map[UC(old[0])] = dmap[UC(old[0])];
 910                 keymacro_clear(el, map, new);
 911                 /* MAP_VI == 1, MAP_EMACS == 0... */
 912                 map[UC(new[0])] = tp->bind[el->el_map.type];
 913                 if (dalt) {
 914                         keymacro_clear(el, alt, old);
 915                         alt[UC(old[0])] = dalt[UC(old[0])];
 916                         keymacro_clear(el, alt, new);
 917                         alt[UC(new[0])] = tp->bind[el->el_map.type + 1];
 918                 }
 919         }
 920 }
 921
 922
 923 private tcflag_t *
 924 tty__get_flag(struct termios *t, int kind) {
 925         switch (kind) {
 926         case MD_INP:
 927                 return &t->c_iflag;
 928         case MD_OUT:
 929                 return &t->c_oflag;
 930         case MD_CTL:
 931                 return &t->c_cflag;
 932         case MD_LIN:
 933                 return &t->c_lflag;
 934         default:
 935                 abort();
 936                 /*NOTREACHED*/
 937         }
 938 }
 939
 940
 941 private tcflag_t
 942 tty_update_flag(EditLine *el, tcflag_t f, int mode, int kind)
 943 {
 944         f &= ~el->el_tty.t_t[mode][kind].t_clrmask;
 945         f |= el->el_tty.t_t[mode][kind].t_setmask;
 946         return f;
 947 }
 948
 949
 950 private void
 951 tty_update_flags(EditLine *el, int kind)
 952 {
 953         tcflag_t *tt, *ed, *ex;
 954         tt = tty__get_flag(&el->el_tty.t_ts, kind);
 955         ed = tty__get_flag(&el->el_tty.t_ed, kind);
 956         ex = tty__get_flag(&el->el_tty.t_ex, kind);
 957
 958         if (*tt != *ex && (kind != MD_CTL || *tt != *ed)) {
 959                 *ed = tty_update_flag(el, *tt, ED_IO, kind);
 960                 *ex = tty_update_flag(el, *tt, EX_IO, kind);
 961         }
 962 }
 963
 964
 965 private void
 966 tty_update_char(EditLine *el, int mode, int c) {
 967         if (!((el->el_tty.t_t[mode][MD_CHAR].t_setmask & C_SH(c)))
 968             && (el->el_tty.t_c[TS_IO][c] != el->el_tty.t_c[EX_IO][c]))
 969                 el->el_tty.t_c[mode][c] = el->el_tty.t_c[TS_IO][c];
 970         if (el->el_tty.t_t[mode][MD_CHAR].t_clrmask & C_SH(c))
 971                 el->el_tty.t_c[mode][c] = el->el_tty.t_vdisable;
 972 }
 973
 974
 975 /* tty_rawmode():
 976  *      Set terminal into 1 character at a time mode.
 977  */
 978 protected int
 979 tty_rawmode(EditLine *el)
 980 {
 981
 982         if (el->el_tty.t_mode == ED_IO || el->el_tty.t_mode == QU_IO)
 983                 return 0;
 984
 985         if (el->el_flags & EDIT_DISABLED)
 986                 return 0;
 987
 988         if (tty_getty(el, &el->el_tty.t_ts) == -1) {
 989 #ifdef DEBUG_TTY
 990                 (void) fprintf(el->el_errfile, "%s: tty_getty: %s\n", __func__,
 991                     strerror(errno));
 992 #endif /* DEBUG_TTY */
 993                 return -1;
 994         }
 995         /*
 996          * We always keep up with the eight bit setting and the speed of the
 997          * tty. But we only believe changes that are made to cooked mode!
 998          */
 999         el->el_tty.t_eight = tty__geteightbit(&el->el_tty.t_ts);
1000         el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ts);
1001
1002         if (tty__getspeed(&el->el_tty.t_ex) != el->el_tty.t_speed ||
1003             tty__getspeed(&el->el_tty.t_ed) != el->el_tty.t_speed) {
1004                 (void) cfsetispeed(&el->el_tty.t_ex, el->el_tty.t_speed);
1005                 (void) cfsetospeed(&el->el_tty.t_ex, el->el_tty.t_speed);
1006                 (void) cfsetispeed(&el->el_tty.t_ed, el->el_tty.t_speed);
1007                 (void) cfsetospeed(&el->el_tty.t_ed, el->el_tty.t_speed);
1008         }
1009         if (tty__cooked_mode(&el->el_tty.t_ts)) {
1010                 int i;
1011
1012                 for (i = MD_INP; i <= MD_LIN; i++)
1013                         tty_update_flags(el, i);
1014
1015                 if (tty__gettabs(&el->el_tty.t_ex) == 0)
1016                         el->el_tty.t_tabs = 0;
1017                 else
1018                         el->el_tty.t_tabs = EL_CAN_TAB ? 1 : 0;
1019
1020                 tty__getchar(&el->el_tty.t_ts, el->el_tty.t_c[TS_IO]);
1021                 /*
1022                  * Check if the user made any changes.
1023                  * If he did, then propagate the changes to the
1024                  * edit and execute data structures.
1025                  */
1026                 for (i = 0; i < C_NCC; i++)
1027                         if (el->el_tty.t_c[TS_IO][i] !=
1028                             el->el_tty.t_c[EX_IO][i])
1029                                 break;
1030
1031                 if (i != C_NCC) {
1032                         /*
1033                          * Propagate changes only to the unprotected
1034                          * chars that have been modified just now.
1035                          */
1036                         for (i = 0; i < C_NCC; i++)
1037                                 tty_update_char(el, ED_IO, i);
1038
1039                         tty_bind_char(el, 0);
1040                         tty__setchar(&el->el_tty.t_ed, el->el_tty.t_c[ED_IO]);
1041
1042                         for (i = 0; i < C_NCC; i++)
1043                                 tty_update_char(el, EX_IO, i);
1044
1045                         tty__setchar(&el->el_tty.t_ex, el->el_tty.t_c[EX_IO]);
1046                 }
1047         }
1048         if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ed) == -1) {
1049 #ifdef DEBUG_TTY
1050                 (void) fprintf(el->el_errfile, "%s: tty_setty: %s\n", __func__,
1051                     strerror(errno));
1052 #endif /* DEBUG_TTY */
1053                 return -1;
1054         }
1055         el->el_tty.t_mode = ED_IO;
1056         return 0;
1057 }
1058
1059
1060 /* tty_cookedmode():
1061  *      Set the tty back to normal mode
1062  */
1063 protected int
1064 tty_cookedmode(EditLine *el)
1065 {                               /* set tty in normal setup */
1066
1067         if (el->el_tty.t_mode == EX_IO)
1068                 return 0;
1069
1070         if (el->el_flags & EDIT_DISABLED)
1071                 return 0;
1072
1073         if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ex) == -1) {
1074 #ifdef DEBUG_TTY
1075                 (void) fprintf(el->el_errfile, "%s: tty_setty: %s\n", __func__,
1076                     strerror(errno));
1077 #endif /* DEBUG_TTY */
1078                 return -1;
1079         }
1080         el->el_tty.t_mode = EX_IO;
1081         return 0;
1082 }
1083
1084
1085 /* tty_quotemode():
1086  *      Turn on quote mode
1087  */
1088 protected int
1089 tty_quotemode(EditLine *el)
1090 {
1091         if (el->el_tty.t_mode == QU_IO)
1092                 return 0;
1093
1094         el->el_tty.t_qu = el->el_tty.t_ed;
1095
1096         tty_setup_flags(el, &el->el_tty.t_qu, QU_IO);
1097
1098         if (tty_setty(el, TCSADRAIN, &el->el_tty.t_qu) == -1) {
1099 #ifdef DEBUG_TTY
1100                 (void) fprintf(el->el_errfile, "%s: tty_setty: %s\n", __func__,
1101                     strerror(errno));
1102 #endif /* DEBUG_TTY */
1103                 return -1;
1104         }
1105         el->el_tty.t_mode = QU_IO;
1106         return 0;
1107 }
1108
1109
1110 /* tty_noquotemode():
1111  *      Turn off quote mode
1112  */
1113 protected int
1114 tty_noquotemode(EditLine *el)
1115 {
1116
1117         if (el->el_tty.t_mode != QU_IO)
1118                 return 0;
1119         if (tty_setty(el, TCSADRAIN, &el->el_tty.t_ed) == -1) {
1120 #ifdef DEBUG_TTY
1121                 (void) fprintf(el->el_errfile, "%s: tty_setty: %s\n", __func__,
1122                     strerror(errno));
1123 #endif /* DEBUG_TTY */
1124                 return -1;
1125         }
1126         el->el_tty.t_mode = ED_IO;
1127         return 0;
1128 }
1129
1130
1131 /* tty_stty():
1132  *      Stty builtin
1133  */
1134 protected int
1135 /*ARGSUSED*/
1136 tty_stty(EditLine *el, int argc __attribute__((__unused__)), const Char **argv)
1137 {
1138         const ttymodes_t *m;
1139         char x;
1140         int aflag = 0;
1141         const Char *s, *d;
1142         char name[EL_BUFSIZ];
1143         struct termios *tios = &el->el_tty.t_ex;
1144         int z = EX_IO;
1145
1146         if (argv == NULL)
1147                 return -1;
1148         strncpy(name, ct_encode_string(*argv++, &el->el_scratch), sizeof(name));
1149         name[sizeof(name) - 1] = '\0';
1150
1151         while (argv && *argv && argv[0][0] == '-' && argv[0][2] == '\0')
1152                 switch (argv[0][1]) {
1153                 case 'a':
1154                         aflag++;
1155                         argv++;
1156                         break;
1157                 case 'd':
1158                         argv++;
1159                         tios = &el->el_tty.t_ed;
1160                         z = ED_IO;
1161                         break;
1162                 case 'x':
1163                         argv++;
1164                         tios = &el->el_tty.t_ex;
1165                         z = EX_IO;
1166                         break;
1167                 case 'q':
1168                         argv++;
1169                         tios = &el->el_tty.t_ts;
1170                         z = QU_IO;
1171                         break;
1172                 default:
1173                         (void) fprintf(el->el_errfile,
1174                             "%s: Unknown switch `" FCHAR "'.\n",
1175                             name, (Int)argv[0][1]);
1176                         return -1;
1177                 }
1178
1179         if (!argv || !*argv) {
1180                 int i = -1;
1181                 size_t len = 0, st = 0, cu;
1182                 for (m = ttymodes; m->m_name; m++) {
1183                         if (m->m_type != i) {
1184                                 (void) fprintf(el->el_outfile, "%s%s",
1185                                     i != -1 ? "\n" : "",
1186                                     el->el_tty.t_t[z][m->m_type].t_name);
1187                                 i = m->m_type;
1188                                 st = len =
1189                                     strlen(el->el_tty.t_t[z][m->m_type].t_name);
1190                         }
1191                         if (i != -1) {
1192                             x = (el->el_tty.t_t[z][i].t_setmask & m->m_value)
1193                                 ?  '+' : '\0';
1194
1195                             if (el->el_tty.t_t[z][i].t_clrmask & m->m_value)
1196                                 x = '-';
1197                         } else {
1198                             x = '\0';
1199                         }
1200
1201                         if (x != '\0' || aflag) {
1202
1203                                 cu = strlen(m->m_name) + (x != '\0') + 1;
1204
1205                                 if (len + cu >=
1206                                     (size_t)el->el_terminal.t_size.h) {
1207                                         (void) fprintf(el->el_outfile, "\n%*s",
1208                                             (int)st, "");
1209                                         len = st + cu;
1210                                 } else
1211                                         len += cu;
1212
1213                                 if (x != '\0')
1214                                         (void) fprintf(el->el_outfile, "%c%s ",
1215                                             x, m->m_name);
1216                                 else
1217                                         (void) fprintf(el->el_outfile, "%s ",
1218                                             m->m_name);
1219                         }
1220                 }
1221                 (void) fprintf(el->el_outfile, "\n");
1222                 return 0;
1223         }
1224         while (argv && (s = *argv++)) {
1225                 const Char *p;
1226                 switch (*s) {
1227                 case '+':
1228                 case '-':
1229                         x = (char)*s++;
1230                         break;
1231                 default:
1232                         x = '\0';
1233                         break;
1234                 }
1235                 d = s;
1236                 p = Strchr(s, '=');
1237                 for (m = ttymodes; m->m_name; m++)
1238                         if ((p ? strncmp(m->m_name, ct_encode_string(d,
1239                             &el->el_scratch), (size_t)(p - d)) :
1240                             strcmp(m->m_name, ct_encode_string(d,
1241                             &el->el_scratch))) == 0 &&
1242                             (p == NULL || m->m_type == MD_CHAR))
1243                                 break;
1244
1245                 if (!m->m_name) {
1246                         (void) fprintf(el->el_errfile,
1247                             "%s: Invalid argument `" FSTR "'.\n", name, d);
1248                         return -1;
1249                 }
1250                 if (p) {
1251                         int c = ffs((int)m->m_value);
1252                         int v = *++p ? parse__escape(&p) :
1253                             el->el_tty.t_vdisable;
1254                         assert(c != 0);
1255                         c--;
1256                         c = tty__getcharindex(c);
1257                         assert(c != -1);
1258                         tios->c_cc[c] = (cc_t)v;
1259                         continue;
1260                 }
1261                 switch (x) {
1262                 case '+':
1263                         el->el_tty.t_t[z][m->m_type].t_setmask |= m->m_value;
1264                         el->el_tty.t_t[z][m->m_type].t_clrmask &= ~m->m_value;
1265                         break;
1266                 case '-':
1267                         el->el_tty.t_t[z][m->m_type].t_setmask &= ~m->m_value;
1268                         el->el_tty.t_t[z][m->m_type].t_clrmask |= m->m_value;
1269                         break;
1270                 default:
1271                         el->el_tty.t_t[z][m->m_type].t_setmask &= ~m->m_value;
1272                         el->el_tty.t_t[z][m->m_type].t_clrmask &= ~m->m_value;
1273                         break;
1274                 }
1275         }
1276
1277         tty_setup_flags(el, tios, z);
1278         if (el->el_tty.t_mode == z) {
1279                 if (tty_setty(el, TCSADRAIN, tios) == -1) {
1280 #ifdef DEBUG_TTY
1281                         (void) fprintf(el->el_errfile, "%s: tty_setty: %s\n",
1282                             __func__, strerror(errno));
1283 #endif /* DEBUG_TTY */
1284                         return -1;
1285                 }
1286         }
1287
1288         return 0;
1289 }
1290
1291
1292 #ifdef notyet
1293 /* tty_printchar():
1294  *      DEbugging routine to print the tty characters
1295  */
1296 private void
1297 tty_printchar(EditLine *el, unsigned char *s)
1298 {
1299         ttyperm_t *m;
1300         int i;
1301
1302         for (i = 0; i < C_NCC; i++) {
1303                 for (m = el->el_tty.t_t; m->m_name; m++)
1304                         if (m->m_type == MD_CHAR && C_SH(i) == m->m_value)
1305                                 break;
1306                 if (m->m_name)
1307                         (void) fprintf(el->el_errfile, "%s ^%c ",
1308                             m->m_name, s[i] + 'A' - 1);
1309                 if (i % 5 == 0)
1310                         (void) fprintf(el->el_errfile, "\n");
1311         }
1312         (void) fprintf(el->el_errfile, "\n");
1313 }
1314 #endif /* notyet */
1315
1316
1317 private void
1318 tty_setup_flags(EditLine *el, struct termios *tios, int mode)
1319 {
1320         int kind;
1321         for (kind = MD_INP; kind <= MD_LIN; kind++) {
1322                 tcflag_t *f = tty__get_flag(tios, kind);
1323                 *f = tty_update_flag(el, *f, mode, kind);
1324         }
1325 }