/contrib/tcsh/sh.file.c

  1/* $Header: /p/tcsh/cvsroot/tcsh/sh.file.c,v 3.37 2010/02/09 20:21:49 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
 36RCSID("$tcsh: sh.file.c,v 3.37 2010/02/09 20:21:49 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
 58typedef enum {
 59    LIST, RECOGNIZE
 60}       COMMAND;
 61
 62static	void	 setup_tty		(int);
 63static	void	 back_to_col_1		(void);
 64static	void	 pushback		(const Char *);
 65static	int	 filetype		(const Char *, const Char *);
 66static	void	 print_by_column	(const Char *, Char *[], size_t);
 67static	Char 	*tilde			(const Char *);
 68static	void	 retype			(void);
 69static	void	 beep			(void);
 70static	void 	 print_recognized_stuff	(const Char *);
 71static	void	 extract_dir_and_name	(const Char *, Char **, const Char **);
 72static	Char	*getitem		(DIR *, int);
 73static	size_t	 tsearch		(Char *, COMMAND, size_t);
 74static	int	 compare		(const void *, const void *);
 75static	int	 recognize		(Char **, Char *, size_t, size_t);
 76static	int	 is_prefix		(const Char *, const Char *);
 77static	int	 is_suffix		(const Char *, const Char *);
 78static	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 */
 86int    filec = 0;
 87
 88static void
 89setup_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 */
162static void
163back_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 */
213static void
214pushback(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 |
238#ifndef __QNXNTO__
239	ECHOPRT |
240#endif
241	ECHOCTL);
242# ifdef POSIX
243    (void) xtcsetattr(SHOUT, TCSANOW, &tty);
244# else
245    (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
246# endif /* POSIX */
247
248    for (p = string; *p != '\0'; p++) {
249	char buf[MB_LEN_MAX];
250	size_t i, len;
251
252	len = one_wctomb(buf, *p & CHAR);
253	for (i = 0; i < len; i++)
254	    (void) ioctl(SHOUT, TIOCSTI, (ioctl_t) &buf[i]);
255    }
256# ifdef POSIX
257    (void) xtcsetattr(SHOUT, TCSANOW, &tty_normal);
258# else
259    (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty_normal);
260# endif /* POSIX */
261#else
262    (void) ioctl(SHOUT, TIOCGETP, (ioctl_t) & tty);
263    tty_normal = tty;
264    tty.sg_flags &= ~ECHO;
265    (void) ioctl(SHOUT, TIOCSETN, (ioctl_t) & tty);
266
267    for (p = string; c = *p; p++)
268	(void) ioctl(SHOUT, TIOCSTI, (ioctl_t) & c);
269    (void) ioctl(SHOUT, TIOCSETN, (ioctl_t) & tty_normal);
270#endif /* TERMIO */
271
272    cleanup_until(&pintr_disabled);
273}
274
275static int
276filetype(const Char *dir, const Char *file)
277{
278    Char    *path;
279    char *spath;
280    struct stat statb;
281
282    path = Strspl(dir, file);
283    spath = short2str(path);
284    xfree(path);
285    if (lstat(spath, &statb) == 0) {
286	switch (statb.st_mode & S_IFMT) {
287	case S_IFDIR:
288	    return ('/');
289
290	case S_IFLNK:
291	    if (stat(spath, &statb) == 0 &&	/* follow it out */
292		S_ISDIR(statb.st_mode))
293		return ('>');
294	    else
295		return ('@');
296
297	case S_IFSOCK:
298	    return ('=');
299
300	default:
301	    if (statb.st_mode & 0111)
302		return ('*');
303	}
304    }
305    return (' ');
306}
307
308/*
309 * Print sorted down columns
310 */
311static void
312print_by_column(const Char *dir, Char *items[], size_t count)
313{
314    struct winsize win;
315    size_t i;
316    int rows, r, c, maxwidth = 0, columns;
317
318    if (ioctl(SHOUT, TIOCGWINSZ, (ioctl_t) & win) < 0 || win.ws_col == 0)
319	win.ws_col = 80;
320    for (i = 0; i < count; i++)
321	maxwidth = maxwidth > (r = Strlen(items[i])) ? maxwidth : r;
322    maxwidth += 2;		/* for the file tag and space */
323    columns = win.ws_col / maxwidth;
324    if (columns == 0)
325	columns = 1;
326    rows = (count + (columns - 1)) / columns;
327    for (r = 0; r < rows; r++) {
328	for (c = 0; c < columns; c++) {
329	    i = c * rows + r;
330	    if (i < count) {
331		int w;
332
333		xprintf("%S", items[i]);
334		xputchar(dir ? filetype(dir, items[i]) : ' ');
335		if (c < columns - 1) {	/* last column? */
336		    w = Strlen(items[i]) + 1;
337		    for (; w < maxwidth; w++)
338			xputchar(' ');
339		}
340	    }
341	}
342	xputchar('\r');
343	xputchar('\n');
344    }
345}
346
347/*
348 * Expand file name with possible tilde usage
349 *	~person/mumble
350 * expands to
351 *	home_directory_of_person/mumble
352 */
353static Char *
354tilde(const Char *old)
355{
356    const Char *o, *home;
357    struct passwd *pw;
358
359    if (old[0] != '~')
360	return (Strsave(old));
361    old++;
362
363    for (o = old; *o != '\0' && *o != '/'; o++)
364	;
365    if (o == old)
366	home = varval(STRhome);
367    else {
368	Char *person;
369
370	person = Strnsave(old, o - old);
371	pw = xgetpwnam(short2str(person));
372	xfree(person);
373	if (pw == NULL)
374	    return (NULL);
375	home = str2short(pw->pw_dir);
376    }
377    return Strspl(home, o);
378}
379
380/*
381 * Cause pending line to be printed
382 */
383static void
384retype(void)
385{
386#ifdef TERMIO
387# ifdef POSIX
388    struct termios tty;
389
390    (void) tcgetattr(SHOUT, &tty);
391# else
392    struct termio tty;
393
394    (void) ioctl(SHOUT, TCGETA, (ioctl_t) &tty);
395# endif /* POSIX */
396
397#ifndef __QNXNTO__
398    tty.c_lflag |= PENDIN;
399#endif
400
401# ifdef POSIX
402    (void) xtcsetattr(SHOUT, TCSANOW, &tty);
403# else
404    (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
405# endif /* POSIX */
406#else
407    int     pending_input = LPENDIN;
408
409    (void) ioctl(SHOUT, TIOCLBIS, (ioctl_t) & pending_input);
410#endif /* TERMIO */
411}
412
413static void
414beep(void)
415{
416    if (adrof(STRnobeep) == 0)
417#ifdef IS_ASCII
418	(void) xwrite(SHOUT, "\007", 1);
419#else
420    {
421	unsigned char beep_ch = CTL_ESC('\007');
422	(void) xwrite(SHOUT, &beep_ch, 1);
423    }
424#endif
425}
426
427/*
428 * Erase that silly ^[ and
429 * print the recognized part of the string
430 */
431static void
432print_recognized_stuff(const Char *recognized_part)
433{
434    /* An optimized erasing of that silly ^[ */
435    (void) putraw('\b');
436    (void) putraw('\b');
437    switch (Strlen(recognized_part)) {
438
439    case 0:			/* erase two Characters: ^[ */
440	(void) putraw(' ');
441	(void) putraw(' ');
442	(void) putraw('\b');
443	(void) putraw('\b');
444	break;
445
446    case 1:			/* overstrike the ^, erase the [ */
447	xprintf("%S", recognized_part);
448	(void) putraw(' ');
449	(void) putraw('\b');
450	break;
451
452    default:			/* overstrike both Characters ^[ */
453	xprintf("%S", recognized_part);
454	break;
455    }
456    flush();
457}
458
459/*
460 * Parse full path in file into 2 parts: directory and file names
461 * Should leave final slash (/) at end of dir.
462 */
463static void
464extract_dir_and_name(const Char *path, Char **dir, const Char **name)
465{
466    const Char *p;
467
468    p = Strrchr(path, '/');
469    if (p == NULL)
470	p = path;
471    else
472	p++;
473    *name = p;
474    *dir = Strnsave(path, p - path);
475}
476
477static Char *
478getitem(DIR *dir_fd, int looking_for_lognames)
479{
480    struct passwd *pw;
481    struct dirent *dirp;
482
483    if (looking_for_lognames) {
484#ifndef HAVE_GETPWENT
485	    return (NULL);
486#else
487	if ((pw = getpwent()) == NULL)
488	    return (NULL);
489	return (str2short(pw->pw_name));
490#endif /* atp vmsposix */
491    }
492    if ((dirp = readdir(dir_fd)) != NULL)
493	return (str2short(dirp->d_name));
494    return (NULL);
495}
496
497/*
498 * Perform a RECOGNIZE or LIST command on string "word".
499 */
500static size_t
501tsearch(Char *word, COMMAND command, size_t max_word_length)
502{
503    DIR *dir_fd;
504    int ignoring = TRUE, nignored = 0;
505    int looking_for_lognames;
506    Char *tilded_dir = NULL, *dir = NULL;
507    Char *extended_name = NULL;
508    const Char *name;
509    Char *item;
510    struct blk_buf items = BLK_BUF_INIT;
511    size_t name_length;
512
513    looking_for_lognames = (*word == '~') && (Strchr(word, '/') == NULL);
514    if (looking_for_lognames) {
515#ifdef HAVE_GETPWENT
516	(void) setpwent();
517#endif
518	name = word + 1;	/* name sans ~ */
519	dir_fd = NULL;
520	cleanup_push(dir, xfree);
521    }
522    else {
523	extract_dir_and_name(word, &dir, &name);
524	cleanup_push(dir, xfree);
525	tilded_dir = tilde(dir);
526	if (tilded_dir == NULL)
527	    goto end;
528	cleanup_push(tilded_dir, xfree);
529	dir_fd = opendir(*tilded_dir ? short2str(tilded_dir) : ".");
530	if (dir_fd == NULL)
531	    goto end;
532    }
533
534    name_length = Strlen(name);
535    cleanup_push(&extended_name, xfree_indirect);
536    cleanup_push(&items, bb_cleanup);
537again:				/* search for matches */
538    while ((item = getitem(dir_fd, looking_for_lognames)) != NULL) {
539	if (!is_prefix(name, item))
540	    continue;
541	/* Don't match . files on null prefix match */
542	if (name_length == 0 && item[0] == '.' &&
543	    !looking_for_lognames)
544	    continue;
545	if (command == LIST)
546	    bb_append(&items, Strsave(item));
547	else {			/* RECOGNIZE command */
548	    if (ignoring && ignored(item))
549		nignored++;
550	    else if (recognize(&extended_name, item, name_length, ++items.len))
551		break;
552	}
553    }
554    if (ignoring && items.len == 0 && nignored > 0) {
555	ignoring = FALSE;
556	nignored = 0;
557	if (looking_for_lognames) {
558#ifdef HAVE_GETPWENT
559	    (void) setpwent();
560#endif /* atp vmsposix */
561	} else
562	    rewinddir(dir_fd);
563	goto again;
564    }
565
566    if (looking_for_lognames) {
567#ifndef HAVE_GETPWENT
568	(void) endpwent();
569#endif
570    } else
571	xclosedir(dir_fd);
572    if (items.len != 0) {
573	if (command == RECOGNIZE) {
574	    if (looking_for_lognames)
575		copyn(word, STRtilde, 2);/*FIXBUF, sort of */
576	    else
577		/* put back dir part */
578		copyn(word, dir, max_word_length);/*FIXBUF*/
579	    /* add extended name */
580	    catn(word, extended_name, max_word_length);/*FIXBUF*/
581	}
582	else {			/* LIST */
583	    qsort(items.vec, items.len, sizeof(items.vec[0]), compare);
584	    print_by_column(looking_for_lognames ? NULL : tilded_dir,
585			    items.vec, items.len);
586	}
587    }
588 end:
589    cleanup_until(dir);
590    return items.len;
591}
592
593
594static int
595compare(const void *p, const void *q)
596{
597#if defined (WIDE_STRINGS) && !defined (UTF16_STRING)
598    errno = 0;
599
600    return (wcscoll(*(Char *const *) p, *(Char *const *) q));
601#else
602    char *p1, *q1;
603    int res;
604
605    p1 = strsave(short2str(*(Char *const *) p));
606    q1 = strsave(short2str(*(Char *const *) q));
607# if defined(NLS) && defined(HAVE_STRCOLL)
608    res = strcoll(p1, q1);
609# else
610    res = strcmp(p1, q1);
611# endif /* NLS && HAVE_STRCOLL */
612    xfree (p1);
613    xfree (q1);
614    return res;
615#endif /* not WIDE_STRINGS */
616}
617
618/*
619 * Object: extend what user typed up to an ambiguity.
620 * Algorithm:
621 * On first match, copy full item (assume it'll be the only match)
622 * On subsequent matches, shorten extended_name to the first
623 * Character mismatch between extended_name and item.
624 * If we shorten it back to the prefix length, stop searching.
625 */
626static int
627recognize(Char **extended_name, Char *item, size_t name_length,
628	  size_t numitems)
629{
630    if (numitems == 1)		/* 1st match */
631	*extended_name = Strsave(item);
632    else {			/* 2nd & subsequent matches */
633	Char *x, *ent;
634	size_t len = 0;
635
636	x = *extended_name;
637	for (ent = item; *x && *x == *ent++; x++, len++);
638	*x = '\0';		/* Shorten at 1st Char diff */
639	if (len == name_length)	/* Ambiguous to prefix? */
640	    return (-1);	/* So stop now and save time */
641    }
642    return (0);
643}
644
645/*
646 * Return true if check matches initial Chars in template.
647 * This differs from PWB imatch in that if check is null
648 * it matches anything.
649 */
650static int
651is_prefix(const Char *check, const Char *template)
652{
653    do
654	if (*check == 0)
655	    return (TRUE);
656    while (*check++ == *template++);
657    return (FALSE);
658}
659
660/*
661 *  Return true if the Chars in template appear at the
662 *  end of check, I.e., are it's suffix.
663 */
664static int
665is_suffix(const Char *check, const Char *template)
666{
667    const Char *c, *t;
668
669    for (c = check; *c++;);
670    for (t = template; *t++;);
671    for (;;) {
672	if (t == template)
673	    return 1;
674	if (c == check || *--t != *--c)
675	    return 0;
676    }
677}
678
679static void
680setup_tty_cleanup(void *dummy)
681{
682    USE(dummy);
683    setup_tty(OFF);
684}
685
686size_t
687tenex(Char *inputline, size_t inputline_size)
688{
689    size_t numitems;
690    ssize_t num_read;
691    char    tinputline[BUFSIZE + 1];/*FIXBUF*/
692
693    setup_tty(ON);
694    cleanup_push(&num_read, setup_tty_cleanup); /* num_read is only a marker */
695
696    while ((num_read = xread(SHIN, tinputline, BUFSIZE)) > 0) {/*FIXBUF*/
697	static const Char delims[] = {' ', '\'', '"', '\t', ';', '&', '<',
698	'>', '(', ')', '|', '^', '%', '\0'};
699	Char *str_end, *word_start, last_Char, should_retype;
700	size_t space_left;
701	COMMAND command;
702
703	tinputline[num_read] = 0;
704	Strcpy(inputline, str2short(tinputline));/*FIXBUF*/
705	num_read = Strlen(inputline);
706	last_Char = CTL_ESC(ASC(inputline[num_read - 1]) & ASCII);
707
708	if (last_Char == '\n' || (size_t)num_read == inputline_size)
709	    break;
710	command = (last_Char == ESC) ? RECOGNIZE : LIST;
711	if (command == LIST)
712	    xputchar('\n');
713	str_end = &inputline[num_read];
714	if (last_Char == ESC)
715	    --str_end;		/* wipeout trailing cmd Char */
716	*str_end = '\0';
717	/*
718	 * Find LAST occurence of a delimiter in the inputline. The word start
719	 * is one Character past it.
720	 */
721	for (word_start = str_end; word_start > inputline; --word_start)
722	    if (Strchr(delims, word_start[-1]))
723		break;
724	space_left = inputline_size - (word_start - inputline) - 1;
725	numitems = tsearch(word_start, command, space_left);
726
727	if (command == RECOGNIZE) {
728	    /* print from str_end on */
729	    print_recognized_stuff(str_end);
730	    if (numitems != 1)	/* Beep = No match/ambiguous */
731		beep();
732	}
733
734	/*
735	 * Tabs in the input line cause trouble after a pushback. tty driver
736	 * won't backspace over them because column positions are now
737	 * incorrect. This is solved by retyping over current line.
738	 */
739	should_retype = FALSE;
740	if (Strchr(inputline, '\t')) {	/* tab Char in input line? */
741	    back_to_col_1();
742	    should_retype = TRUE;
743	}
744	if (command == LIST)	/* Always retype after a LIST */
745	    should_retype = TRUE;
746	if (should_retype)
747	    printprompt(0, NULL);
748	pushback(inputline);
749	if (should_retype)
750	    retype();
751    }
752    cleanup_until(&num_read);
753    return (num_read);
754}
755
756static int
757ignored(const Char *item)
758{
759    struct varent *vp;
760    Char **cp;
761
762    if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL)
763	return (FALSE);
764    for (; *cp != NULL; cp++)
765	if (is_suffix(item, *cp))
766	    return (TRUE);
767    return (FALSE);
768}
769#endif	/* FILEC && TIOCSTI */