lib/libedit/common.c

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Christos Zoulas of Cornell University.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  *      $NetBSD: common.c,v 1.18 2005/08/08 14:05:37 christos Exp $
  33  */
  34
  35 #if !defined(lint) && !defined(SCCSID)
  36 static char sccsid[] = "@(#)common.c    8.1 (Berkeley) 6/4/93";
  37 #endif /* not lint && not SCCSID */
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41 /*
  42  * common.c: Common Editor functions
  43  */
  44 #include "sys.h"
  45 #include "el.h"
  46
  47 /* ed_end_of_file():
  48  *      Indicate end of file
  49  *      [^D]
  50  */
  51 protected el_action_t
  52 /*ARGSUSED*/
  53 ed_end_of_file(EditLine *el, int c __unused)
  54 {
  55
  56         re_goto_bottom(el);
  57         *el->el_line.lastchar = '\0';
  58         return (CC_EOF);
  59 }
  60
  61
  62 /* ed_insert():
  63  *      Add character to the line
  64  *      Insert a character [bound to all insert keys]
  65  */
  66 protected el_action_t
  67 ed_insert(EditLine *el, int c)
  68 {
  69         int count = el->el_state.argument;
  70
  71         if (c == '\0')
  72                 return (CC_ERROR);
  73
  74         if (el->el_line.lastchar + el->el_state.argument >=
  75             el->el_line.limit) {
  76                 /* end of buffer space, try to allocate more */
  77                 if (!ch_enlargebufs(el, (size_t) count))
  78                         return CC_ERROR;        /* error allocating more */
  79         }
  80
  81         if (count == 1) {
  82                 if (el->el_state.inputmode == MODE_INSERT
  83                     || el->el_line.cursor >= el->el_line.lastchar)
  84                         c_insert(el, 1);
  85
  86                 *el->el_line.cursor++ = c;
  87                 re_fastaddc(el);                /* fast refresh for one char. */
  88         } else {
  89                 if (el->el_state.inputmode != MODE_REPLACE_1)
  90                         c_insert(el, el->el_state.argument);
  91
  92                 while (count-- && el->el_line.cursor < el->el_line.lastchar)
  93                         *el->el_line.cursor++ = c;
  94                 re_refresh(el);
  95         }
  96
  97         if (el->el_state.inputmode == MODE_REPLACE_1)
  98                 return vi_command_mode(el, 0);
  99
 100         return (CC_NORM);
 101 }
 102
 103
 104 /* ed_delete_prev_word():
 105  *      Delete from beginning of current word to cursor
 106  *      [M-^?] [^W]
 107  */
 108 protected el_action_t
 109 /*ARGSUSED*/
 110 ed_delete_prev_word(EditLine *el, int c __unused)
 111 {
 112         char *cp, *p, *kp;
 113
 114         if (el->el_line.cursor == el->el_line.buffer)
 115                 return (CC_ERROR);
 116
 117         cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
 118             el->el_state.argument, ce__isword);
 119
 120         for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
 121                 *kp++ = *p;
 122         el->el_chared.c_kill.last = kp;
 123
 124         c_delbefore(el, el->el_line.cursor - cp);       /* delete before dot */
 125         el->el_line.cursor = cp;
 126         if (el->el_line.cursor < el->el_line.buffer)
 127                 el->el_line.cursor = el->el_line.buffer; /* bounds check */
 128         return (CC_REFRESH);
 129 }
 130
 131
 132 /* ed_delete_next_char():
 133  *      Delete character under cursor
 134  *      [^D] [x]
 135  */
 136 protected el_action_t
 137 /*ARGSUSED*/
 138 ed_delete_next_char(EditLine *el, int c __unused)
 139 {
 140 #ifdef notdef                   /* XXX */
 141 #define EL      el->el_line
 142         (void) fprintf(el->el_errlfile,
 143             "\nD(b: %x(%s)  c: %x(%s) last: %x(%s) limit: %x(%s)\n",
 144             EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
 145             EL.lastchar, EL.limit, EL.limit);
 146 #endif
 147         if (el->el_line.cursor == el->el_line.lastchar) {
 148                         /* if I'm at the end */
 149                 if (el->el_map.type == MAP_VI) {
 150                         if (el->el_line.cursor == el->el_line.buffer) {
 151                                 /* if I'm also at the beginning */
 152 #ifdef KSHVI
 153                                 return (CC_ERROR);
 154 #else
 155                                 term_overwrite(el, STReof, 4);
 156                                         /* then do an EOF */
 157                                 term__flush();
 158                                 return (CC_EOF);
 159 #endif
 160                         } else {
 161 #ifdef KSHVI
 162                                 el->el_line.cursor--;
 163 #else
 164                                 return (CC_ERROR);
 165 #endif
 166                         }
 167                 } else {
 168                         if (el->el_line.cursor != el->el_line.buffer)
 169                                 el->el_line.cursor--;
 170                         else
 171                                 return (CC_ERROR);
 172                 }
 173         }
 174         c_delafter(el, el->el_state.argument);  /* delete after dot */
 175         if (el->el_line.cursor >= el->el_line.lastchar &&
 176             el->el_line.cursor > el->el_line.buffer)
 177                         /* bounds check */
 178                 el->el_line.cursor = el->el_line.lastchar - 1;
 179         return (CC_REFRESH);
 180 }
 181
 182
 183 /* ed_kill_line():
 184  *      Cut to the end of line
 185  *      [^K] [^K]
 186  */
 187 protected el_action_t
 188 /*ARGSUSED*/
 189 ed_kill_line(EditLine *el, int c __unused)
 190 {
 191         char *kp, *cp;
 192
 193         cp = el->el_line.cursor;
 194         kp = el->el_chared.c_kill.buf;
 195         while (cp < el->el_line.lastchar)
 196                 *kp++ = *cp++;  /* copy it */
 197         el->el_chared.c_kill.last = kp;
 198                         /* zap! -- delete to end */
 199         el->el_line.lastchar = el->el_line.cursor;
 200         return (CC_REFRESH);
 201 }
 202
 203
 204 /* ed_move_to_end():
 205  *      Move cursor to the end of line
 206  *      [^E] [^E]
 207  */
 208 protected el_action_t
 209 /*ARGSUSED*/
 210 ed_move_to_end(EditLine *el, int c __unused)
 211 {
 212
 213         el->el_line.cursor = el->el_line.lastchar;
 214         if (el->el_map.type == MAP_VI) {
 215 #ifdef VI_MOVE
 216                 el->el_line.cursor--;
 217 #endif
 218                 if (el->el_chared.c_vcmd.action != NOP) {
 219                         cv_delfini(el);
 220                         return (CC_REFRESH);
 221                 }
 222         }
 223         return (CC_CURSOR);
 224 }
 225
 226
 227 /* ed_move_to_beg():
 228  *      Move cursor to the beginning of line
 229  *      [^A] [^A]
 230  */
 231 protected el_action_t
 232 /*ARGSUSED*/
 233 ed_move_to_beg(EditLine *el, int c __unused)
 234 {
 235
 236         el->el_line.cursor = el->el_line.buffer;
 237
 238         if (el->el_map.type == MAP_VI) {
 239                         /* We want FIRST non space character */
 240                 while (isspace((unsigned char) *el->el_line.cursor))
 241                         el->el_line.cursor++;
 242                 if (el->el_chared.c_vcmd.action != NOP) {
 243                         cv_delfini(el);
 244                         return (CC_REFRESH);
 245                 }
 246         }
 247         return (CC_CURSOR);
 248 }
 249
 250
 251 /* ed_transpose_chars():
 252  *      Exchange the character to the left of the cursor with the one under it
 253  *      [^T] [^T]
 254  */
 255 protected el_action_t
 256 ed_transpose_chars(EditLine *el, int c)
 257 {
 258
 259         if (el->el_line.cursor < el->el_line.lastchar) {
 260                 if (el->el_line.lastchar <= &el->el_line.buffer[1])
 261                         return (CC_ERROR);
 262                 else
 263                         el->el_line.cursor++;
 264         }
 265         if (el->el_line.cursor > &el->el_line.buffer[1]) {
 266                 /* must have at least two chars entered */
 267                 c = el->el_line.cursor[-2];
 268                 el->el_line.cursor[-2] = el->el_line.cursor[-1];
 269                 el->el_line.cursor[-1] = c;
 270                 return (CC_REFRESH);
 271         } else
 272                 return (CC_ERROR);
 273 }
 274
 275
 276 /* ed_next_char():
 277  *      Move to the right one character
 278  *      [^F] [^F]
 279  */
 280 protected el_action_t
 281 /*ARGSUSED*/
 282 ed_next_char(EditLine *el, int c __unused)
 283 {
 284         char *lim = el->el_line.lastchar;
 285
 286         if (el->el_line.cursor >= lim ||
 287             (el->el_line.cursor == lim - 1 &&
 288             el->el_map.type == MAP_VI &&
 289             el->el_chared.c_vcmd.action == NOP))
 290                 return (CC_ERROR);
 291
 292         el->el_line.cursor += el->el_state.argument;
 293         if (el->el_line.cursor > lim)
 294                 el->el_line.cursor = lim;
 295
 296         if (el->el_map.type == MAP_VI)
 297                 if (el->el_chared.c_vcmd.action != NOP) {
 298                         cv_delfini(el);
 299                         return (CC_REFRESH);
 300                 }
 301         return (CC_CURSOR);
 302 }
 303
 304
 305 /* ed_prev_word():
 306  *      Move to the beginning of the current word
 307  *      [M-b] [b]
 308  */
 309 protected el_action_t
 310 /*ARGSUSED*/
 311 ed_prev_word(EditLine *el, int c __unused)
 312 {
 313
 314         if (el->el_line.cursor == el->el_line.buffer)
 315                 return (CC_ERROR);
 316
 317         el->el_line.cursor = c__prev_word(el->el_line.cursor,
 318             el->el_line.buffer,
 319             el->el_state.argument,
 320             ce__isword);
 321
 322         if (el->el_map.type == MAP_VI)
 323                 if (el->el_chared.c_vcmd.action != NOP) {
 324                         cv_delfini(el);
 325                         return (CC_REFRESH);
 326                 }
 327         return (CC_CURSOR);
 328 }
 329
 330
 331 /* ed_prev_char():
 332  *      Move to the left one character
 333  *      [^B] [^B]
 334  */
 335 protected el_action_t
 336 /*ARGSUSED*/
 337 ed_prev_char(EditLine *el, int c __unused)
 338 {
 339
 340         if (el->el_line.cursor > el->el_line.buffer) {
 341                 el->el_line.cursor -= el->el_state.argument;
 342                 if (el->el_line.cursor < el->el_line.buffer)
 343                         el->el_line.cursor = el->el_line.buffer;
 344
 345                 if (el->el_map.type == MAP_VI)
 346                         if (el->el_chared.c_vcmd.action != NOP) {
 347                                 cv_delfini(el);
 348                                 return (CC_REFRESH);
 349                         }
 350                 return (CC_CURSOR);
 351         } else
 352                 return (CC_ERROR);
 353 }
 354
 355
 356 /* ed_quoted_insert():
 357  *      Add the next character typed verbatim
 358  *      [^V] [^V]
 359  */
 360 protected el_action_t
 361 ed_quoted_insert(EditLine *el, int c)
 362 {
 363         int num;
 364         char tc;
 365
 366         tty_quotemode(el);
 367         num = el_getc(el, &tc);
 368         c = (unsigned char) tc;
 369         tty_noquotemode(el);
 370         if (num == 1)
 371                 return (ed_insert(el, c));
 372         else
 373                 return (ed_end_of_file(el, 0));
 374 }
 375
 376
 377 /* ed_digit():
 378  *      Adds to argument or enters a digit
 379  */
 380 protected el_action_t
 381 ed_digit(EditLine *el, int c)
 382 {
 383
 384         if (!isdigit((unsigned char) c))
 385                 return (CC_ERROR);
 386
 387         if (el->el_state.doingarg) {
 388                         /* if doing an arg, add this in... */
 389                 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
 390                         el->el_state.argument = c - '0';
 391                 else {
 392                         if (el->el_state.argument > 1000000)
 393                                 return (CC_ERROR);
 394                         el->el_state.argument =
 395                             (el->el_state.argument * 10) + (c - '0');
 396                 }
 397                 return (CC_ARGHACK);
 398         }
 399
 400         return ed_insert(el, c);
 401 }
 402
 403
 404 /* ed_argument_digit():
 405  *      Digit that starts argument
 406  *      For ESC-n
 407  */
 408 protected el_action_t
 409 ed_argument_digit(EditLine *el, int c)
 410 {
 411
 412         if (!isdigit((unsigned char) c))
 413                 return (CC_ERROR);
 414
 415         if (el->el_state.doingarg) {
 416                 if (el->el_state.argument > 1000000)
 417                         return (CC_ERROR);
 418                 el->el_state.argument = (el->el_state.argument * 10) +
 419                     (c - '0');
 420         } else {                /* else starting an argument */
 421                 el->el_state.argument = c - '0';
 422                 el->el_state.doingarg = 1;
 423         }
 424         return (CC_ARGHACK);
 425 }
 426
 427
 428 /* ed_unassigned():
 429  *      Indicates unbound character
 430  *      Bound to keys that are not assigned
 431  */
 432 protected el_action_t
 433 /*ARGSUSED*/
 434 ed_unassigned(EditLine *el, int c __unused)
 435 {
 436
 437         return (CC_ERROR);
 438 }
 439
 440
 441 /**
 442  ** TTY key handling.
 443  **/
 444
 445 /* ed_tty_sigint():
 446  *      Tty interrupt character
 447  *      [^C]
 448  */
 449 protected el_action_t
 450 /*ARGSUSED*/
 451 ed_tty_sigint(EditLine *el __unused,
 452               int c __unused)
 453 {
 454
 455         return (CC_NORM);
 456 }
 457
 458
 459 /* ed_tty_dsusp():
 460  *      Tty delayed suspend character
 461  *      [^Y]
 462  */
 463 protected el_action_t
 464 /*ARGSUSED*/
 465 ed_tty_dsusp(EditLine *el __unused,
 466              int c __unused)
 467 {
 468
 469         return (CC_NORM);
 470 }
 471
 472
 473 /* ed_tty_flush_output():
 474  *      Tty flush output characters
 475  *      [^O]
 476  */
 477 protected el_action_t
 478 /*ARGSUSED*/
 479 ed_tty_flush_output(EditLine *el __unused,
 480                     int c __unused)
 481 {
 482
 483         return (CC_NORM);
 484 }
 485
 486
 487 /* ed_tty_sigquit():
 488  *      Tty quit character
 489  *      [^\]
 490  */
 491 protected el_action_t
 492 /*ARGSUSED*/
 493 ed_tty_sigquit(EditLine *el __unused,
 494                int c __unused)
 495 {
 496
 497         return (CC_NORM);
 498 }
 499
 500
 501 /* ed_tty_sigtstp():
 502  *      Tty suspend character
 503  *      [^Z]
 504  */
 505 protected el_action_t
 506 /*ARGSUSED*/
 507 ed_tty_sigtstp(EditLine *el __unused,
 508                int c __unused)
 509 {
 510
 511         return (CC_NORM);
 512 }
 513
 514
 515 /* ed_tty_stop_output():
 516  *      Tty disallow output characters
 517  *      [^S]
 518  */
 519 protected el_action_t
 520 /*ARGSUSED*/
 521 ed_tty_stop_output(EditLine *el __unused,
 522                    int c __unused)
 523 {
 524
 525         return (CC_NORM);
 526 }
 527
 528
 529 /* ed_tty_start_output():
 530  *      Tty allow output characters
 531  *      [^Q]
 532  */
 533 protected el_action_t
 534 /*ARGSUSED*/
 535 ed_tty_start_output(EditLine *el __unused,
 536                     int c __unused)
 537 {
 538
 539         return (CC_NORM);
 540 }
 541
 542
 543 /* ed_newline():
 544  *      Execute command
 545  *      [^J]
 546  */
 547 protected el_action_t
 548 /*ARGSUSED*/
 549 ed_newline(EditLine *el, int c __unused)
 550 {
 551
 552         re_goto_bottom(el);
 553         *el->el_line.lastchar++ = '\n';
 554         *el->el_line.lastchar = '\0';
 555         return (CC_NEWLINE);
 556 }
 557
 558
 559 /* ed_delete_prev_char():
 560  *      Delete the character to the left of the cursor
 561  *      [^?]
 562  */
 563 protected el_action_t
 564 /*ARGSUSED*/
 565 ed_delete_prev_char(EditLine *el, int c __unused)
 566 {
 567
 568         if (el->el_line.cursor <= el->el_line.buffer)
 569                 return (CC_ERROR);
 570
 571         c_delbefore(el, el->el_state.argument);
 572         el->el_line.cursor -= el->el_state.argument;
 573         if (el->el_line.cursor < el->el_line.buffer)
 574                 el->el_line.cursor = el->el_line.buffer;
 575         return (CC_REFRESH);
 576 }
 577
 578
 579 /* ed_clear_screen():
 580  *      Clear screen leaving current line at the top
 581  *      [^L]
 582  */
 583 protected el_action_t
 584 /*ARGSUSED*/
 585 ed_clear_screen(EditLine *el, int c __unused)
 586 {
 587
 588         term_clear_screen(el);  /* clear the whole real screen */
 589         re_clear_display(el);   /* reset everything */
 590         return (CC_REFRESH);
 591 }
 592
 593
 594 /* ed_redisplay():
 595  *      Redisplay everything
 596  *      ^R
 597  */
 598 protected el_action_t
 599 /*ARGSUSED*/
 600 ed_redisplay(EditLine *el __unused,
 601              int c __unused)
 602 {
 603
 604         return (CC_REDISPLAY);
 605 }
 606
 607
 608 /* ed_start_over():
 609  *      Erase current line and start from scratch
 610  *      [^G]
 611  */
 612 protected el_action_t
 613 /*ARGSUSED*/
 614 ed_start_over(EditLine *el, int c __unused)
 615 {
 616
 617         ch_reset(el, 0);
 618         return (CC_REFRESH);
 619 }
 620
 621
 622 /* ed_sequence_lead_in():
 623  *      First character in a bound sequence
 624  *      Placeholder for external keys
 625  */
 626 protected el_action_t
 627 /*ARGSUSED*/
 628 ed_sequence_lead_in(EditLine *el __unused,
 629                     int c __unused)
 630 {
 631
 632         return (CC_NORM);
 633 }
 634
 635
 636 /* ed_prev_history():
 637  *      Move to the previous history line
 638  *      [^P] [k]
 639  */
 640 protected el_action_t
 641 /*ARGSUSED*/
 642 ed_prev_history(EditLine *el, int c __unused)
 643 {
 644         char beep = 0;
 645         int sv_event = el->el_history.eventno;
 646
 647         el->el_chared.c_undo.len = -1;
 648         *el->el_line.lastchar = '\0';           /* just in case */
 649
 650         if (el->el_history.eventno == 0) {      /* save the current buffer
 651                                                  * away */
 652                 (void) strncpy(el->el_history.buf, el->el_line.buffer,
 653                     EL_BUFSIZ);
 654                 el->el_history.last = el->el_history.buf +
 655                     (el->el_line.lastchar - el->el_line.buffer);
 656         }
 657         el->el_history.eventno += el->el_state.argument;
 658
 659         if (hist_get(el) == CC_ERROR) {
 660                 if (el->el_map.type == MAP_VI) {
 661                         el->el_history.eventno = sv_event;
 662                         return CC_ERROR;
 663                 }
 664                 beep = 1;
 665                 /* el->el_history.eventno was fixed by first call */
 666                 (void) hist_get(el);
 667         }
 668         if (beep)
 669                 return CC_REFRESH_BEEP;
 670         return CC_REFRESH;
 671 }
 672
 673
 674 /* ed_next_history():
 675  *      Move to the next history line
 676  *      [^N] [j]
 677  */
 678 protected el_action_t
 679 /*ARGSUSED*/
 680 ed_next_history(EditLine *el, int c __unused)
 681 {
 682         el_action_t beep = CC_REFRESH, rval;
 683
 684         el->el_chared.c_undo.len = -1;
 685         *el->el_line.lastchar = '\0';   /* just in case */
 686
 687         el->el_history.eventno -= el->el_state.argument;
 688
 689         if (el->el_history.eventno < 0) {
 690                 el->el_history.eventno = 0;
 691                 beep = CC_REFRESH_BEEP;
 692         }
 693         rval = hist_get(el);
 694         if (rval == CC_REFRESH)
 695                 return beep;
 696         return rval;
 697
 698 }
 699
 700
 701 /* ed_search_prev_history():
 702  *      Search previous in history for a line matching the current
 703  *      next search history [M-P] [K]
 704  */
 705 protected el_action_t
 706 /*ARGSUSED*/
 707 ed_search_prev_history(EditLine *el, int c __unused)
 708 {
 709         const char *hp;
 710         int h;
 711         bool_t found = 0;
 712
 713         el->el_chared.c_vcmd.action = NOP;
 714         el->el_chared.c_undo.len = -1;
 715         *el->el_line.lastchar = '\0';   /* just in case */
 716         if (el->el_history.eventno < 0) {
 717 #ifdef DEBUG_EDIT
 718                 (void) fprintf(el->el_errfile,
 719                     "e_prev_search_hist(): eventno < 0;\n");
 720 #endif
 721                 el->el_history.eventno = 0;
 722                 return (CC_ERROR);
 723         }
 724         if (el->el_history.eventno == 0) {
 725                 (void) strncpy(el->el_history.buf, el->el_line.buffer,
 726                     EL_BUFSIZ);
 727                 el->el_history.last = el->el_history.buf +
 728                     (el->el_line.lastchar - el->el_line.buffer);
 729         }
 730         if (el->el_history.ref == NULL)
 731                 return (CC_ERROR);
 732
 733         hp = HIST_FIRST(el);
 734         if (hp == NULL)
 735                 return (CC_ERROR);
 736
 737         c_setpat(el);           /* Set search pattern !! */
 738
 739         for (h = 1; h <= el->el_history.eventno; h++)
 740                 hp = HIST_NEXT(el);
 741
 742         while (hp != NULL) {
 743 #ifdef SDEBUG
 744                 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
 745 #endif
 746                 if ((strncmp(hp, el->el_line.buffer, (size_t)
 747                             (el->el_line.lastchar - el->el_line.buffer)) ||
 748                         hp[el->el_line.lastchar - el->el_line.buffer]) &&
 749                     c_hmatch(el, hp)) {
 750                         found++;
 751                         break;
 752                 }
 753                 h++;
 754                 hp = HIST_NEXT(el);
 755         }
 756
 757         if (!found) {
 758 #ifdef SDEBUG
 759                 (void) fprintf(el->el_errfile, "not found\n");
 760 #endif
 761                 return (CC_ERROR);
 762         }
 763         el->el_history.eventno = h;
 764
 765         return (hist_get(el));
 766 }
 767
 768
 769 /* ed_search_next_history():
 770  *      Search next in history for a line matching the current
 771  *      [M-N] [J]
 772  */
 773 protected el_action_t
 774 /*ARGSUSED*/
 775 ed_search_next_history(EditLine *el, int c __unused)
 776 {
 777         const char *hp;
 778         int h;
 779         bool_t found = 0;
 780
 781         el->el_chared.c_vcmd.action = NOP;
 782         el->el_chared.c_undo.len = -1;
 783         *el->el_line.lastchar = '\0';   /* just in case */
 784
 785         if (el->el_history.eventno == 0)
 786                 return (CC_ERROR);
 787
 788         if (el->el_history.ref == NULL)
 789                 return (CC_ERROR);
 790
 791         hp = HIST_FIRST(el);
 792         if (hp == NULL)
 793                 return (CC_ERROR);
 794
 795         c_setpat(el);           /* Set search pattern !! */
 796
 797         for (h = 1; h < el->el_history.eventno && hp; h++) {
 798 #ifdef SDEBUG
 799                 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
 800 #endif
 801                 if ((strncmp(hp, el->el_line.buffer, (size_t)
 802                             (el->el_line.lastchar - el->el_line.buffer)) ||
 803                         hp[el->el_line.lastchar - el->el_line.buffer]) &&
 804                     c_hmatch(el, hp))
 805                         found = h;
 806                 hp = HIST_NEXT(el);
 807         }
 808
 809         if (!found) {           /* is it the current history number? */
 810                 if (!c_hmatch(el, el->el_history.buf)) {
 811 #ifdef SDEBUG
 812                         (void) fprintf(el->el_errfile, "not found\n");
 813 #endif
 814                         return (CC_ERROR);
 815                 }
 816         }
 817         el->el_history.eventno = found;
 818
 819         return (hist_get(el));
 820 }
 821
 822
 823 /* ed_prev_line():
 824  *      Move up one line
 825  *      Could be [k] [^p]
 826  */
 827 protected el_action_t
 828 /*ARGSUSED*/
 829 ed_prev_line(EditLine *el, int c __unused)
 830 {
 831         char *ptr;
 832         int nchars = c_hpos(el);
 833
 834         /*
 835          * Move to the line requested
 836          */
 837         if (*(ptr = el->el_line.cursor) == '\n')
 838                 ptr--;
 839
 840         for (; ptr >= el->el_line.buffer; ptr--)
 841                 if (*ptr == '\n' && --el->el_state.argument <= 0)
 842                         break;
 843
 844         if (el->el_state.argument > 0)
 845                 return (CC_ERROR);
 846
 847         /*
 848          * Move to the beginning of the line
 849          */
 850         for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
 851                 continue;
 852
 853         /*
 854          * Move to the character requested
 855          */
 856         for (ptr++;
 857             nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
 858             ptr++)
 859                 continue;
 860
 861         el->el_line.cursor = ptr;
 862         return (CC_CURSOR);
 863 }
 864
 865
 866 /* ed_next_line():
 867  *      Move down one line
 868  *      Could be [j] [^n]
 869  */
 870 protected el_action_t
 871 /*ARGSUSED*/
 872 ed_next_line(EditLine *el, int c __unused)
 873 {
 874         char *ptr;
 875         int nchars = c_hpos(el);
 876
 877         /*
 878          * Move to the line requested
 879          */
 880         for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
 881                 if (*ptr == '\n' && --el->el_state.argument <= 0)
 882                         break;
 883
 884         if (el->el_state.argument > 0)
 885                 return (CC_ERROR);
 886
 887         /*
 888          * Move to the character requested
 889          */
 890         for (ptr++;
 891             nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
 892             ptr++)
 893                 continue;
 894
 895         el->el_line.cursor = ptr;
 896         return (CC_CURSOR);
 897 }
 898
 899
 900 /* ed_command():
 901  *      Editline extended command
 902  *      [M-X] [:]
 903  */
 904 protected el_action_t
 905 /*ARGSUSED*/
 906 ed_command(EditLine *el, int c __unused)
 907 {
 908         char tmpbuf[EL_BUFSIZ];
 909         int tmplen;
 910
 911         tmplen = c_gets(el, tmpbuf, "\n: ");
 912         term__putc('\n');
 913
 914         if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
 915                 term_beep(el);
 916
 917         el->el_map.current = el->el_map.key;
 918         re_clear_display(el);
 919         return CC_REFRESH;
 920 }