contrib/tcsh-6/sh.file.c

   1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.file.c,v 3.35 2006/08/23 15:03:14 christos Exp $ */
   2 /*
   3  * sh.file.c: File completion for csh. This file is not used in tcsh.
   4  */
   5 /*-
   6  * Copyright (c) 1980, 1991 The Regents of the University of California.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33 #include "sh.h"
  34 #include "ed.h"
  35
  36 RCSID("$tcsh: sh.file.c,v 3.35 2006/08/23 15:03:14 christos Exp $")
  37
  38 #if defined(FILEC) && defined(TIOCSTI)
  39
  40 /*
  41  * Tenex style file name recognition, .. and more.
  42  * History:
  43  *      Author: Ken Greer, Sept. 1975, CMU.
  44  *      Finally got around to adding to the Cshell., Ken Greer, Dec. 1981.
  45  */
  46
  47 #define ON      1
  48 #define OFF     0
  49 #ifndef TRUE
  50 #define TRUE 1
  51 #endif
  52 #ifndef FALSE
  53 #define FALSE 0
  54 #endif
  55
  56 #define ESC     CTL_ESC('\033')
  57
  58 typedef enum {
  59     LIST, RECOGNIZE
  60 }       COMMAND;
  61
  62 static  void     setup_tty              (int);
  63 static  void     back_to_col_1          (void);
  64 static  void     pushback               (const Char *);
  65 static  int      filetype               (const Char *, const Char *);
  66 static  void     print_by_column        (const Char *, Char *[], size_t);
  67 static  Char    *tilde                  (const Char *);
  68 static  void     retype                 (void);
  69 static  void     beep                   (void);
  70 static  void     print_recognized_stuff (const Char *);
  71 static  void     extract_dir_and_name   (const Char *, Char **, const Char **);
  72 static  Char    *getitem                (DIR *, int);
  73 static  size_t   tsearch                (Char *, COMMAND, size_t);
  74 static  int      compare                (const void *, const void *);
  75 static  int      recognize              (Char **, Char *, size_t, size_t);
  76 static  int      is_prefix              (const Char *, const Char *);
  77 static  int      is_suffix              (const Char *, const Char *);
  78 static  int      ignored                (const Char *);
  79
  80
  81 /*
  82  * Put this here so the binary can be patched with adb to enable file
  83  * completion by default.  Filec controls completion, nobeep controls
  84  * ringing the terminal bell on incomplete expansions.
  85  */
  86 int    filec = 0;
  87
  88 static void
  89 setup_tty(int on)
  90 {
  91 #ifdef TERMIO
  92 # ifdef POSIX
  93     struct termios tchars;
  94 # else
  95     struct termio tchars;
  96 # endif /* POSIX */
  97
  98 # ifdef POSIX
  99     (void) tcgetattr(SHIN, &tchars);
 100 # else
 101     (void) ioctl(SHIN, TCGETA, (ioctl_t) &tchars);
 102 # endif /* POSIX */
 103     if (on) {
 104         tchars.c_cc[VEOL] = ESC;
 105         if (tchars.c_lflag & ICANON)
 106 # ifdef POSIX
 107             on = TCSADRAIN;
 108 # else
 109             on = TCSETA;
 110 # endif /* POSIX */
 111         else {
 112 # ifdef POSIX
 113             on = TCSAFLUSH;
 114 # else
 115             on = TCSETAF;
 116 # endif /* POSIX */
 117             tchars.c_lflag |= ICANON;
 118
 119         }
 120     }
 121     else {
 122         tchars.c_cc[VEOL] = _POSIX_VDISABLE;
 123 # ifdef POSIX
 124         on = TCSADRAIN;
 125 # else
 126         on = TCSETA;
 127 # endif /* POSIX */
 128     }
 129 # ifdef POSIX
 130     (void) xtcsetattr(SHIN, on, &tchars);
 131 # else
 132     (void) ioctl(SHIN, on, (ioctl_t) &tchars);
 133 # endif /* POSIX */
 134 #else
 135     struct sgttyb sgtty;
 136     static struct tchars tchars;/* INT, QUIT, XON, XOFF, EOF, BRK */
 137
 138     if (on) {
 139         (void) ioctl(SHIN, TIOCGETC, (ioctl_t) & tchars);
 140         tchars.t_brkc = ESC;
 141         (void) ioctl(SHIN, TIOCSETC, (ioctl_t) & tchars);
 142         /*
 143          * This must be done after every command: if the tty gets into raw or
 144          * cbreak mode the user can't even type 'reset'.
 145          */
 146         (void) ioctl(SHIN, TIOCGETP, (ioctl_t) & sgtty);
 147         if (sgtty.sg_flags & (RAW | CBREAK)) {
 148             sgtty.sg_flags &= ~(RAW | CBREAK);
 149             (void) ioctl(SHIN, TIOCSETP, (ioctl_t) & sgtty);
 150         }
 151     }
 152     else {
 153         tchars.t_brkc = -1;
 154         (void) ioctl(SHIN, TIOCSETC, (ioctl_t) & tchars);
 155     }
 156 #endif /* TERMIO */
 157 }
 158
 159 /*
 160  * Move back to beginning of current line
 161  */
 162 static void
 163 back_to_col_1(void)
 164 {
 165 #ifdef TERMIO
 166 # ifdef POSIX
 167     struct termios tty, tty_normal;
 168 # else
 169     struct termio tty, tty_normal;
 170 # endif /* POSIX */
 171 #else
 172     struct sgttyb tty, tty_normal;
 173 #endif /* TERMIO */
 174
 175     pintr_disabled++;
 176     cleanup_push(&pintr_disabled, disabled_cleanup);
 177
 178 #ifdef TERMIO
 179 # ifdef POSIX
 180     (void) tcgetattr(SHOUT, &tty);
 181 # else
 182     (void) ioctl(SHOUT, TCGETA, (ioctl_t) &tty_normal);
 183 # endif /* POSIX */
 184     tty_normal = tty;
 185     tty.c_iflag &= ~INLCR;
 186     tty.c_oflag &= ~ONLCR;
 187 # ifdef POSIX
 188     (void) xtcsetattr(SHOUT, TCSANOW, &tty);
 189 # else
 190     (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
 191 # endif /* POSIX */
 192     (void) xwrite(SHOUT, "\r", 1);
 193 # ifdef POSIX
 194     (void) xtcsetattr(SHOUT, TCSANOW, &tty_normal);
 195 # else
 196     (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty_normal);
 197 # endif /* POSIX */
 198 #else
 199     (void) ioctl(SHIN, TIOCGETP, (ioctl_t) & tty);
 200     tty_normal = tty;
 201     tty.sg_flags &= ~CRMOD;
 202     (void) ioctl(SHIN, TIOCSETN, (ioctl_t) & tty);
 203     (void) xwrite(SHOUT, "\r", 1);
 204     (void) ioctl(SHIN, TIOCSETN, (ioctl_t) & tty_normal);
 205 #endif /* TERMIO */
 206
 207     cleanup_until(&pintr_disabled);
 208 }
 209
 210 /*
 211  * Push string contents back into tty queue
 212  */
 213 static void
 214 pushback(const Char *string)
 215 {
 216     const Char *p;
 217 #ifdef TERMIO
 218 # ifdef POSIX
 219     struct termios tty, tty_normal;
 220 # else
 221     struct termio tty, tty_normal;
 222 # endif /* POSIX */
 223 #else
 224     struct sgttyb tty, tty_normal;
 225 #endif /* TERMIO */
 226
 227     pintr_disabled++;
 228     cleanup_push(&pintr_disabled, disabled_cleanup);
 229
 230 #ifdef TERMIO
 231 # ifdef POSIX
 232     (void) tcgetattr(SHOUT, &tty);
 233 # else
 234     (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
 235 # endif /* POSIX */
 236     tty_normal = tty;
 237     tty.c_lflag &= ~(ECHOKE | ECHO | ECHOE | ECHOK | ECHONL | ECHOPRT | ECHOCTL);
 238 # ifdef POSIX
 239     (void) xtcsetattr(SHOUT, TCSANOW, &tty);
 240 # else
 241     (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
 242 # endif /* POSIX */
 243
 244     for (p = string; *p != '\0'; p++) {
 245         char buf[MB_LEN_MAX];
 246         size_t i, len;
 247
 248         len = one_wctomb(buf, *p & CHAR);
 249         for (i = 0; i < len; i++)
 250             (void) ioctl(SHOUT, TIOCSTI, (ioctl_t) &buf[i]);
 251     }
 252 # ifdef POSIX
 253     (void) xtcsetattr(SHOUT, TCSANOW, &tty_normal);
 254 # else
 255     (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty_normal);
 256 # endif /* POSIX */
 257 #else
 258     (void) ioctl(SHOUT, TIOCGETP, (ioctl_t) & tty);
 259     tty_normal = tty;
 260     tty.sg_flags &= ~ECHO;
 261     (void) ioctl(SHOUT, TIOCSETN, (ioctl_t) & tty);
 262
 263     for (p = string; c = *p; p++)
 264         (void) ioctl(SHOUT, TIOCSTI, (ioctl_t) & c);
 265     (void) ioctl(SHOUT, TIOCSETN, (ioctl_t) & tty_normal);
 266 #endif /* TERMIO */
 267
 268     cleanup_until(&pintr_disabled);
 269 }
 270
 271 static int
 272 filetype(const Char *dir, const Char *file)
 273 {
 274     Char    *path;
 275     char *spath;
 276     struct stat statb;
 277
 278     path = Strspl(dir, file);
 279     spath = short2str(path);
 280     xfree(path);
 281     if (lstat(spath, &statb) == 0) {
 282         switch (statb.st_mode & S_IFMT) {
 283         case S_IFDIR:
 284             return ('/');
 285
 286         case S_IFLNK:
 287             if (stat(spath, &statb) == 0 &&     /* follow it out */
 288                 S_ISDIR(statb.st_mode))
 289                 return ('>');
 290             else
 291                 return ('@');
 292
 293         case S_IFSOCK:
 294             return ('=');
 295
 296         default:
 297             if (statb.st_mode & 0111)
 298                 return ('*');
 299         }
 300     }
 301     return (' ');
 302 }
 303
 304 /*
 305  * Print sorted down columns
 306  */
 307 static void
 308 print_by_column(const Char *dir, Char *items[], size_t count)
 309 {
 310     struct winsize win;
 311     size_t i;
 312     int rows, r, c, maxwidth = 0, columns;
 313
 314     if (ioctl(SHOUT, TIOCGWINSZ, (ioctl_t) & win) < 0 || win.ws_col == 0)
 315         win.ws_col = 80;
 316     for (i = 0; i < count; i++)
 317         maxwidth = maxwidth > (r = Strlen(items[i])) ? maxwidth : r;
 318     maxwidth += 2;              /* for the file tag and space */
 319     columns = win.ws_col / maxwidth;
 320     if (columns == 0)
 321         columns = 1;
 322     rows = (count + (columns - 1)) / columns;
 323     for (r = 0; r < rows; r++) {
 324         for (c = 0; c < columns; c++) {
 325             i = c * rows + r;
 326             if (i < count) {
 327                 int w;
 328
 329                 xprintf("%S", items[i]);
 330                 xputchar(dir ? filetype(dir, items[i]) : ' ');
 331                 if (c < columns - 1) {  /* last column? */
 332                     w = Strlen(items[i]) + 1;
 333                     for (; w < maxwidth; w++)
 334                         xputchar(' ');
 335                 }
 336             }
 337         }
 338         xputchar('\r');
 339         xputchar('\n');
 340     }
 341 }
 342
 343 /*
 344  * Expand file name with possible tilde usage
 345  *      ~person/mumble
 346  * expands to
 347  *      home_directory_of_person/mumble
 348  */
 349 static Char *
 350 tilde(const Char *old)
 351 {
 352     const Char *o, *home;
 353     struct passwd *pw;
 354
 355     if (old[0] != '~')
 356         return (Strsave(old));
 357     old++;
 358
 359     for (o = old; *o != '\0' && *o != '/'; o++)
 360         ;
 361     if (o == old)
 362         home = varval(STRhome);
 363     else {
 364         Char *person;
 365
 366         person = Strnsave(old, o - old);
 367         pw = xgetpwnam(short2str(person));
 368         xfree(person);
 369         if (pw == NULL)
 370             return (NULL);
 371         home = str2short(pw->pw_dir);
 372     }
 373     return Strspl(home, o);
 374 }
 375
 376 /*
 377  * Cause pending line to be printed
 378  */
 379 static void
 380 retype(void)
 381 {
 382 #ifdef TERMIO
 383 # ifdef POSIX
 384     struct termios tty;
 385
 386     (void) tcgetattr(SHOUT, &tty);
 387 # else
 388     struct termio tty;
 389
 390     (void) ioctl(SHOUT, TCGETA, (ioctl_t) &tty);
 391 # endif /* POSIX */
 392
 393     tty.c_lflag |= PENDIN;
 394
 395 # ifdef POSIX
 396     (void) xtcsetattr(SHOUT, TCSANOW, &tty);
 397 # else
 398     (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
 399 # endif /* POSIX */
 400 #else
 401     int     pending_input = LPENDIN;
 402
 403     (void) ioctl(SHOUT, TIOCLBIS, (ioctl_t) & pending_input);
 404 #endif /* TERMIO */
 405 }
 406
 407 static void
 408 beep(void)
 409 {
 410     if (adrof(STRnobeep) == 0)
 411 #ifdef IS_ASCII
 412         (void) xwrite(SHOUT, "\007", 1);
 413 #else
 414     {
 415         unsigned char beep_ch = CTL_ESC('\007');
 416         (void) xwrite(SHOUT, &beep_ch, 1);
 417     }
 418 #endif
 419 }
 420
 421 /*
 422  * Erase that silly ^[ and
 423  * print the recognized part of the string
 424  */
 425 static void
 426 print_recognized_stuff(const Char *recognized_part)
 427 {
 428     /* An optimized erasing of that silly ^[ */
 429     (void) putraw('\b');
 430     (void) putraw('\b');
 431     switch (Strlen(recognized_part)) {
 432
 433     case 0:                     /* erase two Characters: ^[ */
 434         (void) putraw(' ');
 435         (void) putraw(' ');
 436         (void) putraw('\b');
 437         (void) putraw('\b');
 438         break;
 439
 440     case 1:                     /* overstrike the ^, erase the [ */
 441         xprintf("%S", recognized_part);
 442         (void) putraw(' ');
 443         (void) putraw('\b');
 444         break;
 445
 446     default:                    /* overstrike both Characters ^[ */
 447         xprintf("%S", recognized_part);
 448         break;
 449     }
 450     flush();
 451 }
 452
 453 /*
 454  * Parse full path in file into 2 parts: directory and file names
 455  * Should leave final slash (/) at end of dir.
 456  */
 457 static void
 458 extract_dir_and_name(const Char *path, Char **dir, const Char **name)
 459 {
 460     const Char *p;
 461
 462     p = Strrchr(path, '/');
 463     if (p == NULL)
 464         p = path;
 465     else
 466         p++;
 467     *name = p;
 468     *dir = Strnsave(path, p - path);
 469 }
 470
 471 static Char *
 472 getitem(DIR *dir_fd, int looking_for_lognames)
 473 {
 474     struct passwd *pw;
 475     struct dirent *dirp;
 476
 477     if (looking_for_lognames) {
 478 #ifndef HAVE_GETPWENT
 479             return (NULL);
 480 #else
 481         if ((pw = getpwent()) == NULL)
 482             return (NULL);
 483         return (str2short(pw->pw_name));
 484 #endif /* atp vmsposix */
 485     }
 486     if ((dirp = readdir(dir_fd)) != NULL)
 487         return (str2short(dirp->d_name));
 488     return (NULL);
 489 }
 490
 491 /*
 492  * Perform a RECOGNIZE or LIST command on string "word".
 493  */
 494 static size_t
 495 tsearch(Char *word, COMMAND command, size_t max_word_length)
 496 {
 497     DIR *dir_fd;
 498     int ignoring = TRUE, nignored = 0;
 499     int looking_for_lognames;
 500     Char *tilded_dir = NULL, *dir = NULL;
 501     Char *extended_name = NULL;
 502     const Char *name;
 503     Char *item;
 504     struct blk_buf items = BLK_BUF_INIT;
 505     size_t name_length;
 506
 507     looking_for_lognames = (*word == '~') && (Strchr(word, '/') == NULL);
 508     if (looking_for_lognames) {
 509 #ifdef HAVE_GETPWENT
 510         (void) setpwent();
 511 #endif
 512         name = word + 1;        /* name sans ~ */
 513         dir_fd = NULL;
 514         cleanup_push(dir, xfree);
 515     }
 516     else {
 517         extract_dir_and_name(word, &dir, &name);
 518         cleanup_push(dir, xfree);
 519         tilded_dir = tilde(dir);
 520         if (tilded_dir == NULL)
 521             goto end;
 522         cleanup_push(tilded_dir, xfree);
 523         dir_fd = opendir(*tilded_dir ? short2str(tilded_dir) : ".");
 524         if (dir_fd == NULL)
 525             goto end;
 526     }
 527
 528     name_length = Strlen(name);
 529     cleanup_push(&extended_name, xfree_indirect);
 530     cleanup_push(&items, bb_cleanup);
 531 again:                          /* search for matches */
 532     while ((item = getitem(dir_fd, looking_for_lognames)) != NULL) {
 533         if (!is_prefix(name, item))
 534             continue;
 535         /* Don't match . files on null prefix match */
 536         if (name_length == 0 && item[0] == '.' &&
 537             !looking_for_lognames)
 538             continue;
 539         if (command == LIST)
 540             bb_append(&items, Strsave(item));
 541         else {                  /* RECOGNIZE command */
 542             if (ignoring && ignored(item))
 543                 nignored++;
 544             else if (recognize(&extended_name, item, name_length, ++items.len))
 545                 break;
 546         }
 547     }
 548     if (ignoring && items.len == 0 && nignored > 0) {
 549         ignoring = FALSE;
 550         nignored = 0;
 551         if (looking_for_lognames) {
 552 #ifdef HAVE_GETPWENT
 553             (void) setpwent();
 554 #endif /* atp vmsposix */
 555         } else
 556             rewinddir(dir_fd);
 557         goto again;
 558     }
 559
 560     if (looking_for_lognames) {
 561 #ifndef HAVE_GETPWENT
 562         (void) endpwent();
 563 #endif
 564     } else
 565         xclosedir(dir_fd);
 566     if (items.len != 0) {
 567         if (command == RECOGNIZE) {
 568             if (looking_for_lognames)
 569                 copyn(word, STRtilde, 2);/*FIXBUF, sort of */
 570             else
 571                 /* put back dir part */
 572                 copyn(word, dir, max_word_length);/*FIXBUF*/
 573             /* add extended name */
 574             catn(word, extended_name, max_word_length);/*FIXBUF*/
 575         }
 576         else {                  /* LIST */
 577             qsort(items.vec, items.len, sizeof(items.vec[0]), compare);
 578             print_by_column(looking_for_lognames ? NULL : tilded_dir,
 579                             items.vec, items.len);
 580         }
 581     }
 582  end:
 583     cleanup_until(dir);
 584     return items.len;
 585 }
 586
 587
 588 static int
 589 compare(const void *p, const void *q)
 590 {
 591 #ifdef WIDE_STRINGS
 592     errno = 0;
 593
 594     return (wcscoll(*(Char *const *) p, *(Char *const *) q));
 595 #else
 596     char *p1, *q1;
 597     int res;
 598
 599     p1 = strsave(short2str(*(Char *const *) p));
 600     q1 = strsave(short2str(*(Char *const *) q));
 601 # if defined(NLS) && defined(HAVE_STRCOLL)
 602     res = strcoll(p1, q1);
 603 # else
 604     res = strcmp(p1, q1);
 605 # endif /* NLS && HAVE_STRCOLL */
 606     xfree (p1);
 607     xfree (q1);
 608     return res;
 609 #endif /* not WIDE_STRINGS */
 610 }
 611
 612 /*
 613  * Object: extend what user typed up to an ambiguity.
 614  * Algorithm:
 615  * On first match, copy full item (assume it'll be the only match)
 616  * On subsequent matches, shorten extended_name to the first
 617  * Character mismatch between extended_name and item.
 618  * If we shorten it back to the prefix length, stop searching.
 619  */
 620 static int
 621 recognize(Char **extended_name, Char *item, size_t name_length,
 622           size_t numitems)
 623 {
 624     if (numitems == 1)          /* 1st match */
 625         *extended_name = Strsave(item);
 626     else {                      /* 2nd & subsequent matches */
 627         Char *x, *ent;
 628         size_t len = 0;
 629
 630         x = *extended_name;
 631         for (ent = item; *x && *x == *ent++; x++, len++);
 632         *x = '\0';              /* Shorten at 1st Char diff */
 633         if (len == name_length) /* Ambiguous to prefix? */
 634             return (-1);        /* So stop now and save time */
 635     }
 636     return (0);
 637 }
 638
 639 /*
 640  * Return true if check matches initial Chars in template.
 641  * This differs from PWB imatch in that if check is null
 642  * it matches anything.
 643  */
 644 static int
 645 is_prefix(const Char *check, const Char *template)
 646 {
 647     do
 648         if (*check == 0)
 649             return (TRUE);
 650     while (*check++ == *template++);
 651     return (FALSE);
 652 }
 653
 654 /*
 655  *  Return true if the Chars in template appear at the
 656  *  end of check, I.e., are it's suffix.
 657  */
 658 static int
 659 is_suffix(const Char *check, const Char *template)
 660 {
 661     const Char *c, *t;
 662
 663     for (c = check; *c++;);
 664     for (t = template; *t++;);
 665     for (;;) {
 666         if (t == template)
 667             return 1;
 668         if (c == check || *--t != *--c)
 669             return 0;
 670     }
 671 }
 672
 673 static void
 674 setup_tty_cleanup(void *dummy)
 675 {
 676     USE(dummy);
 677     setup_tty(OFF);
 678 }
 679
 680 size_t
 681 tenex(Char *inputline, size_t inputline_size)
 682 {
 683     size_t numitems;
 684     ssize_t num_read;
 685     char    tinputline[BUFSIZE + 1];/*FIXBUF*/
 686
 687     setup_tty(ON);
 688     cleanup_push(&num_read, setup_tty_cleanup); /* num_read is only a marker */
 689
 690     while ((num_read = xread(SHIN, tinputline, BUFSIZE)) > 0) {/*FIXBUF*/
 691         static const Char delims[] = {' ', '\'', '"', '\t', ';', '&', '<',
 692         '>', '(', ')', '|', '^', '%', '\0'};
 693         Char *str_end, *word_start, last_Char, should_retype;
 694         size_t space_left;
 695         COMMAND command;
 696
 697         tinputline[num_read] = 0;
 698         Strcpy(inputline, str2short(tinputline));/*FIXBUF*/
 699         num_read = Strlen(inputline);
 700         last_Char = CTL_ESC(ASC(inputline[num_read - 1]) & ASCII);
 701
 702         if (last_Char == '\n' || (size_t)num_read == inputline_size)
 703             break;
 704         command = (last_Char == ESC) ? RECOGNIZE : LIST;
 705         if (command == LIST)
 706             xputchar('\n');
 707         str_end = &inputline[num_read];
 708         if (last_Char == ESC)
 709             --str_end;          /* wipeout trailing cmd Char */
 710         *str_end = '\0';
 711         /*
 712          * Find LAST occurence of a delimiter in the inputline. The word start
 713          * is one Character past it.
 714          */
 715         for (word_start = str_end; word_start > inputline; --word_start)
 716             if (Strchr(delims, word_start[-1]))
 717                 break;
 718         space_left = inputline_size - (word_start - inputline) - 1;
 719         numitems = tsearch(word_start, command, space_left);
 720
 721         if (command == RECOGNIZE) {
 722             /* print from str_end on */
 723             print_recognized_stuff(str_end);
 724             if (numitems != 1)  /* Beep = No match/ambiguous */
 725                 beep();
 726         }
 727
 728         /*
 729          * Tabs in the input line cause trouble after a pushback. tty driver
 730          * won't backspace over them because column positions are now
 731          * incorrect. This is solved by retyping over current line.
 732          */
 733         should_retype = FALSE;
 734         if (Strchr(inputline, '\t')) {  /* tab Char in input line? */
 735             back_to_col_1();
 736             should_retype = TRUE;
 737         }
 738         if (command == LIST)    /* Always retype after a LIST */
 739             should_retype = TRUE;
 740         if (should_retype)
 741             printprompt(0, NULL);
 742         pushback(inputline);
 743         if (should_retype)
 744             retype();
 745     }
 746     cleanup_until(&num_read);
 747     return (num_read);
 748 }
 749
 750 static int
 751 ignored(const Char *item)
 752 {
 753     struct varent *vp;
 754     Char **cp;
 755
 756     if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL)
 757         return (FALSE);
 758     for (; *cp != NULL; cp++)
 759         if (is_suffix(item, *cp))
 760             return (TRUE);
 761     return (FALSE);
 762 }
 763 #endif  /* FILEC && TIOCSTI */