xref: /vim-8.2.3635/src/quickfix.c (revision 17fb0e89)
1 /* vi:set ts=8 sts=4 sw=4:
2  *
3  * VIM - Vi IMproved	by Bram Moolenaar
4  *
5  * Do ":help uganda"  in Vim to read copying and usage conditions.
6  * Do ":help credits" in Vim to see a list of people who contributed.
7  * See README.txt for an overview of the Vim source code.
8  */
9 
10 /*
11  * quickfix.c: functions for quickfix mode, using a file with error messages
12  */
13 
14 #include "vim.h"
15 
16 #if defined(FEAT_QUICKFIX) || defined(PROTO)
17 
18 struct dir_stack_T
19 {
20     struct dir_stack_T	*next;
21     char_u		*dirname;
22 };
23 
24 static struct dir_stack_T   *dir_stack = NULL;
25 
26 /*
27  * For each error the next struct is allocated and linked in a list.
28  */
29 typedef struct qfline_S qfline_T;
30 struct qfline_S
31 {
32     qfline_T	*qf_next;	/* pointer to next error in the list */
33     qfline_T	*qf_prev;	/* pointer to previous error in the list */
34     linenr_T	qf_lnum;	/* line number where the error occurred */
35     int		qf_fnum;	/* file number for the line */
36     int		qf_col;		/* column where the error occurred */
37     int		qf_nr;		/* error number */
38     char_u	*qf_pattern;	/* search pattern for the error */
39     char_u	*qf_text;	/* description of the error */
40     char_u	qf_viscol;	/* set to TRUE if qf_col is screen column */
41     char_u	qf_cleared;	/* set to TRUE if line has been deleted */
42     char_u	qf_type;	/* type of the error (mostly 'E'); 1 for
43 				   :helpgrep */
44     char_u	qf_valid;	/* valid error message detected */
45 };
46 
47 /*
48  * There is a stack of error lists.
49  */
50 #define LISTCOUNT   10
51 
52 typedef struct qf_list_S
53 {
54     qfline_T	*qf_start;	/* pointer to the first error */
55     qfline_T	*qf_ptr;	/* pointer to the current error */
56     int		qf_count;	/* number of errors (0 means no error list) */
57     int		qf_index;	/* current index in the error list */
58     int		qf_nonevalid;	/* TRUE if not a single valid entry found */
59     char_u	*qf_title;	/* title derived from the command that created
60 				 * the error list */
61 } qf_list_T;
62 
63 struct qf_info_S
64 {
65     /*
66      * Count of references to this list. Used only for location lists.
67      * When a location list window reference this list, qf_refcount
68      * will be 2. Otherwise, qf_refcount will be 1. When qf_refcount
69      * reaches 0, the list is freed.
70      */
71     int		qf_refcount;
72     int		qf_listcount;	    /* current number of lists */
73     int		qf_curlist;	    /* current error list */
74     qf_list_T	qf_lists[LISTCOUNT];
75 };
76 
77 static qf_info_T ql_info;	/* global quickfix list */
78 
79 #define FMT_PATTERNS 10		/* maximum number of % recognized */
80 
81 /*
82  * Structure used to hold the info of one part of 'errorformat'
83  */
84 typedef struct efm_S efm_T;
85 struct efm_S
86 {
87     regprog_T	    *prog;	/* pre-formatted part of 'errorformat' */
88     efm_T	    *next;	/* pointer to next (NULL if last) */
89     char_u	    addr[FMT_PATTERNS]; /* indices of used % patterns */
90     char_u	    prefix;	/* prefix of this format line: */
91 				/*   'D' enter directory */
92 				/*   'X' leave directory */
93 				/*   'A' start of multi-line message */
94 				/*   'E' error message */
95 				/*   'W' warning message */
96 				/*   'I' informational message */
97 				/*   'C' continuation line */
98 				/*   'Z' end of multi-line message */
99 				/*   'G' general, unspecific message */
100 				/*   'P' push file (partial) message */
101 				/*   'Q' pop/quit file (partial) message */
102 				/*   'O' overread (partial) message */
103     char_u	    flags;	/* additional flags given in prefix */
104 				/*   '-' do not include this line */
105 				/*   '+' include whole line in message */
106     int		    conthere;	/* %> used */
107 };
108 
109 static int	qf_init_ext __ARGS((qf_info_T *qi, char_u *efile, buf_T *buf, typval_T *tv, char_u *errorformat, int newlist, linenr_T lnumfirst, linenr_T lnumlast, char_u *qf_title));
110 static void	qf_new_list __ARGS((qf_info_T *qi, char_u *qf_title));
111 static void	ll_free_all __ARGS((qf_info_T **pqi));
112 static int	qf_add_entry __ARGS((qf_info_T *qi, qfline_T **prevp, char_u *dir, char_u *fname, int bufnum, char_u *mesg, long lnum, int col, int vis_col, char_u *pattern, int nr, int type, int valid));
113 static qf_info_T *ll_new_list __ARGS((void));
114 static void	qf_msg __ARGS((qf_info_T *qi));
115 static void	qf_free __ARGS((qf_info_T *qi, int idx));
116 static char_u	*qf_types __ARGS((int, int));
117 static int	qf_get_fnum __ARGS((char_u *, char_u *));
118 static char_u	*qf_push_dir __ARGS((char_u *, struct dir_stack_T **));
119 static char_u	*qf_pop_dir __ARGS((struct dir_stack_T **));
120 static char_u	*qf_guess_filepath __ARGS((char_u *));
121 static void	qf_fmt_text __ARGS((char_u *text, char_u *buf, int bufsize));
122 static void	qf_clean_dir_stack __ARGS((struct dir_stack_T **));
123 #ifdef FEAT_WINDOWS
124 static int	qf_win_pos_update __ARGS((qf_info_T *qi, int old_qf_index));
125 static int	is_qf_win __ARGS((win_T *win, qf_info_T *qi));
126 static win_T	*qf_find_win __ARGS((qf_info_T *qi));
127 static buf_T	*qf_find_buf __ARGS((qf_info_T *qi));
128 static void	qf_update_buffer __ARGS((qf_info_T *qi));
129 static void	qf_fill_buffer __ARGS((qf_info_T *qi));
130 #endif
131 static char_u	*get_mef_name __ARGS((void));
132 static buf_T	*load_dummy_buffer __ARGS((char_u *fname));
133 static void	wipe_dummy_buffer __ARGS((buf_T *buf));
134 static void	unload_dummy_buffer __ARGS((buf_T *buf));
135 static qf_info_T *ll_get_or_alloc_list __ARGS((win_T *));
136 
137 /* Quickfix window check helper macro */
138 #define IS_QF_WINDOW(wp) (bt_quickfix(wp->w_buffer) && wp->w_llist_ref == NULL)
139 /* Location list window check helper macro */
140 #define IS_LL_WINDOW(wp) (bt_quickfix(wp->w_buffer) && wp->w_llist_ref != NULL)
141 /*
142  * Return location list for window 'wp'
143  * For location list window, return the referenced location list
144  */
145 #define GET_LOC_LIST(wp) (IS_LL_WINDOW(wp) ? wp->w_llist_ref : wp->w_llist)
146 
147 /*
148  * Read the errorfile "efile" into memory, line by line, building the error
149  * list. Set the error list's title to qf_title.
150  * Return -1 for error, number of errors for success.
151  */
152     int
153 qf_init(wp, efile, errorformat, newlist, qf_title)
154     win_T	    *wp;
155     char_u	    *efile;
156     char_u	    *errorformat;
157     int		    newlist;		/* TRUE: start a new error list */
158     char_u	    *qf_title;
159 {
160     qf_info_T	    *qi = &ql_info;
161 
162     if (efile == NULL)
163 	return FAIL;
164 
165     if (wp != NULL)
166     {
167 	qi = ll_get_or_alloc_list(wp);
168 	if (qi == NULL)
169 	    return FAIL;
170     }
171 
172     return qf_init_ext(qi, efile, curbuf, NULL, errorformat, newlist,
173 						    (linenr_T)0, (linenr_T)0,
174 						    qf_title);
175 }
176 
177 /*
178  * Read the errorfile "efile" into memory, line by line, building the error
179  * list.
180  * Alternative: when "efile" is null read errors from buffer "buf".
181  * Always use 'errorformat' from "buf" if there is a local value.
182  * Then "lnumfirst" and "lnumlast" specify the range of lines to use.
183  * Set the title of the list to "qf_title".
184  * Return -1 for error, number of errors for success.
185  */
186     static int
187 qf_init_ext(qi, efile, buf, tv, errorformat, newlist, lnumfirst, lnumlast,
188 								     qf_title)
189     qf_info_T	    *qi;
190     char_u	    *efile;
191     buf_T	    *buf;
192     typval_T	    *tv;
193     char_u	    *errorformat;
194     int		    newlist;		/* TRUE: start a new error list */
195     linenr_T	    lnumfirst;		/* first line number to use */
196     linenr_T	    lnumlast;		/* last line number to use */
197     char_u	    *qf_title;
198 {
199     char_u	    *namebuf;
200     char_u	    *errmsg;
201     char_u	    *pattern;
202     char_u	    *fmtstr = NULL;
203     int		    col = 0;
204     char_u	    use_viscol = FALSE;
205     int		    type = 0;
206     int		    valid;
207     linenr_T	    buflnum = lnumfirst;
208     long	    lnum = 0L;
209     int		    enr = 0;
210     FILE	    *fd = NULL;
211     qfline_T	    *qfprev = NULL;	/* init to make SASC shut up */
212     char_u	    *efmp;
213     efm_T	    *fmt_first = NULL;
214     efm_T	    *fmt_last = NULL;
215     efm_T	    *fmt_ptr;
216     efm_T	    *fmt_start = NULL;
217     char_u	    *efm;
218     char_u	    *ptr;
219     char_u	    *srcptr;
220     int		    len;
221     int		    i;
222     int		    round;
223     int		    idx = 0;
224     int		    multiline = FALSE;
225     int		    multiignore = FALSE;
226     int		    multiscan = FALSE;
227     int		    retval = -1;	/* default: return error flag */
228     char_u	    *directory = NULL;
229     char_u	    *currfile = NULL;
230     char_u	    *tail = NULL;
231     char_u	    *p_str = NULL;
232     listitem_T	    *p_li = NULL;
233     struct dir_stack_T  *file_stack = NULL;
234     regmatch_T	    regmatch;
235     static struct fmtpattern
236     {
237 	char_u	convchar;
238 	char	*pattern;
239     }		    fmt_pat[FMT_PATTERNS] =
240 		    {
241 			{'f', ".\\+"},	    /* only used when at end */
242 			{'n', "\\d\\+"},
243 			{'l', "\\d\\+"},
244 			{'c', "\\d\\+"},
245 			{'t', "."},
246 			{'m', ".\\+"},
247 			{'r', ".*"},
248 			{'p', "[- .]*"},
249 			{'v', "\\d\\+"},
250 			{'s', ".\\+"}
251 		    };
252 
253     namebuf = alloc(CMDBUFFSIZE + 1);
254     errmsg = alloc(CMDBUFFSIZE + 1);
255     pattern = alloc(CMDBUFFSIZE + 1);
256     if (namebuf == NULL || errmsg == NULL || pattern == NULL)
257 	goto qf_init_end;
258 
259     if (efile != NULL && (fd = mch_fopen((char *)efile, "r")) == NULL)
260     {
261 	EMSG2(_(e_openerrf), efile);
262 	goto qf_init_end;
263     }
264 
265     if (newlist || qi->qf_curlist == qi->qf_listcount)
266 	/* make place for a new list */
267 	qf_new_list(qi, qf_title);
268     else if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
269 	/* Adding to existing list, find last entry. */
270 	for (qfprev = qi->qf_lists[qi->qf_curlist].qf_start;
271 			  qfprev->qf_next != qfprev; qfprev = qfprev->qf_next)
272 	    ;
273 
274 /*
275  * Each part of the format string is copied and modified from errorformat to
276  * regex prog.  Only a few % characters are allowed.
277  */
278     /* Use the local value of 'errorformat' if it's set. */
279     if (errorformat == p_efm && tv == NULL && *buf->b_p_efm != NUL)
280 	efm = buf->b_p_efm;
281     else
282 	efm = errorformat;
283     /*
284      * Get some space to modify the format string into.
285      */
286     i = (FMT_PATTERNS * 3) + ((int)STRLEN(efm) << 2);
287     for (round = FMT_PATTERNS; round > 0; )
288 	i += (int)STRLEN(fmt_pat[--round].pattern);
289 #ifdef COLON_IN_FILENAME
290     i += 12; /* "%f" can become twelve chars longer */
291 #else
292     i += 2; /* "%f" can become two chars longer */
293 #endif
294     if ((fmtstr = alloc(i)) == NULL)
295 	goto error2;
296 
297     while (efm[0] != NUL)
298     {
299 	/*
300 	 * Allocate a new eformat structure and put it at the end of the list
301 	 */
302 	fmt_ptr = (efm_T *)alloc_clear((unsigned)sizeof(efm_T));
303 	if (fmt_ptr == NULL)
304 	    goto error2;
305 	if (fmt_first == NULL)	    /* first one */
306 	    fmt_first = fmt_ptr;
307 	else
308 	    fmt_last->next = fmt_ptr;
309 	fmt_last = fmt_ptr;
310 
311 	/*
312 	 * Isolate one part in the 'errorformat' option
313 	 */
314 	for (len = 0; efm[len] != NUL && efm[len] != ','; ++len)
315 	    if (efm[len] == '\\' && efm[len + 1] != NUL)
316 		++len;
317 
318 	/*
319 	 * Build regexp pattern from current 'errorformat' option
320 	 */
321 	ptr = fmtstr;
322 	*ptr++ = '^';
323 	round = 0;
324 	for (efmp = efm; efmp < efm + len; ++efmp)
325 	{
326 	    if (*efmp == '%')
327 	    {
328 		++efmp;
329 		for (idx = 0; idx < FMT_PATTERNS; ++idx)
330 		    if (fmt_pat[idx].convchar == *efmp)
331 			break;
332 		if (idx < FMT_PATTERNS)
333 		{
334 		    if (fmt_ptr->addr[idx])
335 		    {
336 			sprintf((char *)errmsg,
337 				_("E372: Too many %%%c in format string"), *efmp);
338 			EMSG(errmsg);
339 			goto error2;
340 		    }
341 		    if ((idx
342 				&& idx < 6
343 				&& vim_strchr((char_u *)"DXOPQ",
344 						     fmt_ptr->prefix) != NULL)
345 			    || (idx == 6
346 				&& vim_strchr((char_u *)"OPQ",
347 						    fmt_ptr->prefix) == NULL))
348 		    {
349 			sprintf((char *)errmsg,
350 				_("E373: Unexpected %%%c in format string"), *efmp);
351 			EMSG(errmsg);
352 			goto error2;
353 		    }
354 		    fmt_ptr->addr[idx] = (char_u)++round;
355 		    *ptr++ = '\\';
356 		    *ptr++ = '(';
357 #ifdef BACKSLASH_IN_FILENAME
358 		    if (*efmp == 'f')
359 		    {
360 			/* Also match "c:" in the file name, even when
361 			 * checking for a colon next: "%f:".
362 			 * "\%(\a:\)\=" */
363 			STRCPY(ptr, "\\%(\\a:\\)\\=");
364 			ptr += 10;
365 		    }
366 #endif
367 		    if (*efmp == 'f' && efmp[1] != NUL)
368 		    {
369 			if (efmp[1] != '\\' && efmp[1] != '%')
370 			{
371 			    /* A file name may contain spaces, but this isn't
372 			     * in "\f".  For "%f:%l:%m" there may be a ":" in
373 			     * the file name.  Use ".\{-1,}x" instead (x is
374 			     * the next character), the requirement that :999:
375 			     * follows should work. */
376 			    STRCPY(ptr, ".\\{-1,}");
377 			    ptr += 7;
378 			}
379 			else
380 			{
381 			    /* File name followed by '\\' or '%': include as
382 			     * many file name chars as possible. */
383 			    STRCPY(ptr, "\\f\\+");
384 			    ptr += 4;
385 			}
386 		    }
387 		    else
388 		    {
389 			srcptr = (char_u *)fmt_pat[idx].pattern;
390 			while ((*ptr = *srcptr++) != NUL)
391 			    ++ptr;
392 		    }
393 		    *ptr++ = '\\';
394 		    *ptr++ = ')';
395 		}
396 		else if (*efmp == '*')
397 		{
398 		    if (*++efmp == '[' || *efmp == '\\')
399 		    {
400 			if ((*ptr++ = *efmp) == '[')	/* %*[^a-z0-9] etc. */
401 			{
402 			    if (efmp[1] == '^')
403 				*ptr++ = *++efmp;
404 			    if (efmp < efm + len)
405 			    {
406 				*ptr++ = *++efmp;	    /* could be ']' */
407 				while (efmp < efm + len
408 					&& (*ptr++ = *++efmp) != ']')
409 				    /* skip */;
410 				if (efmp == efm + len)
411 				{
412 				    EMSG(_("E374: Missing ] in format string"));
413 				    goto error2;
414 				}
415 			    }
416 			}
417 			else if (efmp < efm + len)	/* %*\D, %*\s etc. */
418 			    *ptr++ = *++efmp;
419 			*ptr++ = '\\';
420 			*ptr++ = '+';
421 		    }
422 		    else
423 		    {
424 			/* TODO: scanf()-like: %*ud, %*3c, %*f, ... ? */
425 			sprintf((char *)errmsg,
426 				_("E375: Unsupported %%%c in format string"), *efmp);
427 			EMSG(errmsg);
428 			goto error2;
429 		    }
430 		}
431 		else if (vim_strchr((char_u *)"%\\.^$~[", *efmp) != NULL)
432 		    *ptr++ = *efmp;		/* regexp magic characters */
433 		else if (*efmp == '#')
434 		    *ptr++ = '*';
435 		else if (*efmp == '>')
436 		    fmt_ptr->conthere = TRUE;
437 		else if (efmp == efm + 1)		/* analyse prefix */
438 		{
439 		    if (vim_strchr((char_u *)"+-", *efmp) != NULL)
440 			fmt_ptr->flags = *efmp++;
441 		    if (vim_strchr((char_u *)"DXAEWICZGOPQ", *efmp) != NULL)
442 			fmt_ptr->prefix = *efmp;
443 		    else
444 		    {
445 			sprintf((char *)errmsg,
446 				_("E376: Invalid %%%c in format string prefix"), *efmp);
447 			EMSG(errmsg);
448 			goto error2;
449 		    }
450 		}
451 		else
452 		{
453 		    sprintf((char *)errmsg,
454 			    _("E377: Invalid %%%c in format string"), *efmp);
455 		    EMSG(errmsg);
456 		    goto error2;
457 		}
458 	    }
459 	    else			/* copy normal character */
460 	    {
461 		if (*efmp == '\\' && efmp + 1 < efm + len)
462 		    ++efmp;
463 		else if (vim_strchr((char_u *)".*^$~[", *efmp) != NULL)
464 		    *ptr++ = '\\';	/* escape regexp atoms */
465 		if (*efmp)
466 		    *ptr++ = *efmp;
467 	    }
468 	}
469 	*ptr++ = '$';
470 	*ptr = NUL;
471 	if ((fmt_ptr->prog = vim_regcomp(fmtstr, RE_MAGIC + RE_STRING)) == NULL)
472 	    goto error2;
473 	/*
474 	 * Advance to next part
475 	 */
476 	efm = skip_to_option_part(efm + len);	/* skip comma and spaces */
477     }
478     if (fmt_first == NULL)	/* nothing found */
479     {
480 	EMSG(_("E378: 'errorformat' contains no pattern"));
481 	goto error2;
482     }
483 
484     /*
485      * got_int is reset here, because it was probably set when killing the
486      * ":make" command, but we still want to read the errorfile then.
487      */
488     got_int = FALSE;
489 
490     /* Always ignore case when looking for a matching error. */
491     regmatch.rm_ic = TRUE;
492 
493     if (tv != NULL)
494     {
495 	if (tv->v_type == VAR_STRING)
496 	    p_str = tv->vval.v_string;
497 	else if (tv->v_type == VAR_LIST)
498 	    p_li = tv->vval.v_list->lv_first;
499     }
500 
501     /*
502      * Read the lines in the error file one by one.
503      * Try to recognize one of the error formats in each line.
504      */
505     while (!got_int)
506     {
507 	/* Get the next line. */
508 	if (fd == NULL)
509 	{
510 	    if (tv != NULL)
511 	    {
512 		if (tv->v_type == VAR_STRING)
513 		{
514 		    /* Get the next line from the supplied string */
515 		    char_u *p;
516 
517 		    if (!*p_str) /* Reached the end of the string */
518 			break;
519 
520 		    p = vim_strchr(p_str, '\n');
521 		    if (p)
522 			len = (int)(p - p_str + 1);
523 		    else
524 			len = (int)STRLEN(p_str);
525 
526 		    if (len > CMDBUFFSIZE - 2)
527 			vim_strncpy(IObuff, p_str, CMDBUFFSIZE - 2);
528 		    else
529 			vim_strncpy(IObuff, p_str, len);
530 
531 		    p_str += len;
532 		}
533 		else if (tv->v_type == VAR_LIST)
534 		{
535 		    /* Get the next line from the supplied list */
536 		    while (p_li && p_li->li_tv.v_type != VAR_STRING)
537 			p_li = p_li->li_next;	/* Skip non-string items */
538 
539 		    if (!p_li)			/* End of the list */
540 			break;
541 
542 		    len = (int)STRLEN(p_li->li_tv.vval.v_string);
543 		    if (len > CMDBUFFSIZE - 2)
544 			len = CMDBUFFSIZE - 2;
545 
546 		    vim_strncpy(IObuff, p_li->li_tv.vval.v_string, len);
547 
548 		    p_li = p_li->li_next;	/* next item */
549 		}
550 	    }
551 	    else
552 	    {
553 		/* Get the next line from the supplied buffer */
554 		if (buflnum > lnumlast)
555 		    break;
556 		vim_strncpy(IObuff, ml_get_buf(buf, buflnum++, FALSE),
557 			    CMDBUFFSIZE - 2);
558 	    }
559 	}
560 	else if (fgets((char *)IObuff, CMDBUFFSIZE - 2, fd) == NULL)
561 	    break;
562 
563 	IObuff[CMDBUFFSIZE - 2] = NUL;  /* for very long lines */
564 #ifdef FEAT_MBYTE
565 	remove_bom(IObuff);
566 #endif
567 
568 	if ((efmp = vim_strrchr(IObuff, '\n')) != NULL)
569 	    *efmp = NUL;
570 #ifdef USE_CRNL
571 	if ((efmp = vim_strrchr(IObuff, '\r')) != NULL)
572 	    *efmp = NUL;
573 #endif
574 
575 	/* If there was no %> item start at the first pattern */
576 	if (fmt_start == NULL)
577 	    fmt_ptr = fmt_first;
578 	else
579 	{
580 	    fmt_ptr = fmt_start;
581 	    fmt_start = NULL;
582 	}
583 
584 	/*
585 	 * Try to match each part of 'errorformat' until we find a complete
586 	 * match or no match.
587 	 */
588 	valid = TRUE;
589 restofline:
590 	for ( ; fmt_ptr != NULL; fmt_ptr = fmt_ptr->next)
591 	{
592 	    idx = fmt_ptr->prefix;
593 	    if (multiscan && vim_strchr((char_u *)"OPQ", idx) == NULL)
594 		continue;
595 	    namebuf[0] = NUL;
596 	    pattern[0] = NUL;
597 	    if (!multiscan)
598 		errmsg[0] = NUL;
599 	    lnum = 0;
600 	    col = 0;
601 	    use_viscol = FALSE;
602 	    enr = -1;
603 	    type = 0;
604 	    tail = NULL;
605 
606 	    regmatch.regprog = fmt_ptr->prog;
607 	    if (vim_regexec(&regmatch, IObuff, (colnr_T)0))
608 	    {
609 		if ((idx == 'C' || idx == 'Z') && !multiline)
610 		    continue;
611 		if (vim_strchr((char_u *)"EWI", idx) != NULL)
612 		    type = idx;
613 		else
614 		    type = 0;
615 		/*
616 		 * Extract error message data from matched line.
617 		 * We check for an actual submatch, because "\[" and "\]" in
618 		 * the 'errorformat' may cause the wrong submatch to be used.
619 		 */
620 		if ((i = (int)fmt_ptr->addr[0]) > 0)		/* %f */
621 		{
622 		    int c;
623 
624 		    if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
625 			continue;
626 
627 		    /* Expand ~/file and $HOME/file to full path. */
628 		    c = *regmatch.endp[i];
629 		    *regmatch.endp[i] = NUL;
630 		    expand_env(regmatch.startp[i], namebuf, CMDBUFFSIZE);
631 		    *regmatch.endp[i] = c;
632 
633 		    if (vim_strchr((char_u *)"OPQ", idx) != NULL
634 						&& mch_getperm(namebuf) == -1)
635 			continue;
636 		}
637 		if ((i = (int)fmt_ptr->addr[1]) > 0)		/* %n */
638 		{
639 		    if (regmatch.startp[i] == NULL)
640 			continue;
641 		    enr = (int)atol((char *)regmatch.startp[i]);
642 		}
643 		if ((i = (int)fmt_ptr->addr[2]) > 0)		/* %l */
644 		{
645 		    if (regmatch.startp[i] == NULL)
646 			continue;
647 		    lnum = atol((char *)regmatch.startp[i]);
648 		}
649 		if ((i = (int)fmt_ptr->addr[3]) > 0)		/* %c */
650 		{
651 		    if (regmatch.startp[i] == NULL)
652 			continue;
653 		    col = (int)atol((char *)regmatch.startp[i]);
654 		}
655 		if ((i = (int)fmt_ptr->addr[4]) > 0)		/* %t */
656 		{
657 		    if (regmatch.startp[i] == NULL)
658 			continue;
659 		    type = *regmatch.startp[i];
660 		}
661 		if (fmt_ptr->flags == '+' && !multiscan)	/* %+ */
662 		    STRCPY(errmsg, IObuff);
663 		else if ((i = (int)fmt_ptr->addr[5]) > 0)	/* %m */
664 		{
665 		    if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
666 			continue;
667 		    len = (int)(regmatch.endp[i] - regmatch.startp[i]);
668 		    vim_strncpy(errmsg, regmatch.startp[i], len);
669 		}
670 		if ((i = (int)fmt_ptr->addr[6]) > 0)		/* %r */
671 		{
672 		    if (regmatch.startp[i] == NULL)
673 			continue;
674 		    tail = regmatch.startp[i];
675 		}
676 		if ((i = (int)fmt_ptr->addr[7]) > 0)		/* %p */
677 		{
678 		    if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
679 			continue;
680 		    col = (int)(regmatch.endp[i] - regmatch.startp[i] + 1);
681 		    if (*((char_u *)regmatch.startp[i]) != TAB)
682 			use_viscol = TRUE;
683 		}
684 		if ((i = (int)fmt_ptr->addr[8]) > 0)		/* %v */
685 		{
686 		    if (regmatch.startp[i] == NULL)
687 			continue;
688 		    col = (int)atol((char *)regmatch.startp[i]);
689 		    use_viscol = TRUE;
690 		}
691 		if ((i = (int)fmt_ptr->addr[9]) > 0)		/* %s */
692 		{
693 		    if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
694 			continue;
695 		    len = (int)(regmatch.endp[i] - regmatch.startp[i]);
696 		    if (len > CMDBUFFSIZE - 5)
697 			len = CMDBUFFSIZE - 5;
698 		    STRCPY(pattern, "^\\V");
699 		    STRNCAT(pattern, regmatch.startp[i], len);
700 		    pattern[len + 3] = '\\';
701 		    pattern[len + 4] = '$';
702 		    pattern[len + 5] = NUL;
703 		}
704 		break;
705 	    }
706 	}
707 	multiscan = FALSE;
708 
709 	if (fmt_ptr == NULL || idx == 'D' || idx == 'X')
710 	{
711 	    if (fmt_ptr != NULL)
712 	    {
713 		if (idx == 'D')				/* enter directory */
714 		{
715 		    if (*namebuf == NUL)
716 		    {
717 			EMSG(_("E379: Missing or empty directory name"));
718 			goto error2;
719 		    }
720 		    if ((directory = qf_push_dir(namebuf, &dir_stack)) == NULL)
721 			goto error2;
722 		}
723 		else if (idx == 'X')			/* leave directory */
724 		    directory = qf_pop_dir(&dir_stack);
725 	    }
726 	    namebuf[0] = NUL;		/* no match found, remove file name */
727 	    lnum = 0;			/* don't jump to this line */
728 	    valid = FALSE;
729 	    STRCPY(errmsg, IObuff);	/* copy whole line to error message */
730 	    if (fmt_ptr == NULL)
731 		multiline = multiignore = FALSE;
732 	}
733 	else if (fmt_ptr != NULL)
734 	{
735 	    /* honor %> item */
736 	    if (fmt_ptr->conthere)
737 		fmt_start = fmt_ptr;
738 
739 	    if (vim_strchr((char_u *)"AEWI", idx) != NULL)
740 		multiline = TRUE;	/* start of a multi-line message */
741 	    else if (vim_strchr((char_u *)"CZ", idx) != NULL)
742 	    {				/* continuation of multi-line msg */
743 		if (qfprev == NULL)
744 		    goto error2;
745 		if (*errmsg && !multiignore)
746 		{
747 		    len = (int)STRLEN(qfprev->qf_text);
748 		    if ((ptr = alloc((unsigned)(len + STRLEN(errmsg) + 2)))
749 								    == NULL)
750 			goto error2;
751 		    STRCPY(ptr, qfprev->qf_text);
752 		    vim_free(qfprev->qf_text);
753 		    qfprev->qf_text = ptr;
754 		    *(ptr += len) = '\n';
755 		    STRCPY(++ptr, errmsg);
756 		}
757 		if (qfprev->qf_nr == -1)
758 		    qfprev->qf_nr = enr;
759 		if (vim_isprintc(type) && !qfprev->qf_type)
760 		    qfprev->qf_type = type;  /* only printable chars allowed */
761 		if (!qfprev->qf_lnum)
762 		    qfprev->qf_lnum = lnum;
763 		if (!qfprev->qf_col)
764 		    qfprev->qf_col = col;
765 		qfprev->qf_viscol = use_viscol;
766 		if (!qfprev->qf_fnum)
767 		    qfprev->qf_fnum = qf_get_fnum(directory,
768 					*namebuf || directory ? namebuf
769 					  : currfile && valid ? currfile : 0);
770 		if (idx == 'Z')
771 		    multiline = multiignore = FALSE;
772 		line_breakcheck();
773 		continue;
774 	    }
775 	    else if (vim_strchr((char_u *)"OPQ", idx) != NULL)
776 	    {
777 		/* global file names */
778 		valid = FALSE;
779 		if (*namebuf == NUL || mch_getperm(namebuf) >= 0)
780 		{
781 		    if (*namebuf && idx == 'P')
782 			currfile = qf_push_dir(namebuf, &file_stack);
783 		    else if (idx == 'Q')
784 			currfile = qf_pop_dir(&file_stack);
785 		    *namebuf = NUL;
786 		    if (tail && *tail)
787 		    {
788 			STRMOVE(IObuff, skipwhite(tail));
789 			multiscan = TRUE;
790 			goto restofline;
791 		    }
792 		}
793 	    }
794 	    if (fmt_ptr->flags == '-')	/* generally exclude this line */
795 	    {
796 		if (multiline)
797 		    multiignore = TRUE;	/* also exclude continuation lines */
798 		continue;
799 	    }
800 	}
801 
802 	if (qf_add_entry(qi, &qfprev,
803 			directory,
804 			(*namebuf || directory)
805 			    ? namebuf
806 			    : ((currfile && valid) ? currfile : (char_u *)NULL),
807 			0,
808 			errmsg,
809 			lnum,
810 			col,
811 			use_viscol,
812 			pattern,
813 			enr,
814 			type,
815 			valid) == FAIL)
816 	    goto error2;
817 	line_breakcheck();
818     }
819     if (fd == NULL || !ferror(fd))
820     {
821 	if (qi->qf_lists[qi->qf_curlist].qf_index == 0)
822 	{
823 	    /* no valid entry found */
824 	    qi->qf_lists[qi->qf_curlist].qf_ptr =
825 		qi->qf_lists[qi->qf_curlist].qf_start;
826 	    qi->qf_lists[qi->qf_curlist].qf_index = 1;
827 	    qi->qf_lists[qi->qf_curlist].qf_nonevalid = TRUE;
828 	}
829 	else
830 	{
831 	    qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
832 	    if (qi->qf_lists[qi->qf_curlist].qf_ptr == NULL)
833 		qi->qf_lists[qi->qf_curlist].qf_ptr =
834 		    qi->qf_lists[qi->qf_curlist].qf_start;
835 	}
836 	/* return number of matches */
837 	retval = qi->qf_lists[qi->qf_curlist].qf_count;
838 	goto qf_init_ok;
839     }
840     EMSG(_(e_readerrf));
841 error2:
842     qf_free(qi, qi->qf_curlist);
843     qi->qf_listcount--;
844     if (qi->qf_curlist > 0)
845 	--qi->qf_curlist;
846 qf_init_ok:
847     if (fd != NULL)
848 	fclose(fd);
849     for (fmt_ptr = fmt_first; fmt_ptr != NULL; fmt_ptr = fmt_first)
850     {
851 	fmt_first = fmt_ptr->next;
852 	vim_free(fmt_ptr->prog);
853 	vim_free(fmt_ptr);
854     }
855     qf_clean_dir_stack(&dir_stack);
856     qf_clean_dir_stack(&file_stack);
857 qf_init_end:
858     vim_free(namebuf);
859     vim_free(errmsg);
860     vim_free(pattern);
861     vim_free(fmtstr);
862 
863 #ifdef FEAT_WINDOWS
864     qf_update_buffer(qi);
865 #endif
866 
867     return retval;
868 }
869 
870 /*
871  * Prepare for adding a new quickfix list.
872  */
873     static void
874 qf_new_list(qi, qf_title)
875     qf_info_T	*qi;
876     char_u	*qf_title;
877 {
878     int		i;
879 
880     /*
881      * If the current entry is not the last entry, delete entries below
882      * the current entry.  This makes it possible to browse in a tree-like
883      * way with ":grep'.
884      */
885     while (qi->qf_listcount > qi->qf_curlist + 1)
886 	qf_free(qi, --qi->qf_listcount);
887 
888     /*
889      * When the stack is full, remove to oldest entry
890      * Otherwise, add a new entry.
891      */
892     if (qi->qf_listcount == LISTCOUNT)
893     {
894 	qf_free(qi, 0);
895 	for (i = 1; i < LISTCOUNT; ++i)
896 	    qi->qf_lists[i - 1] = qi->qf_lists[i];
897 	qi->qf_curlist = LISTCOUNT - 1;
898     }
899     else
900 	qi->qf_curlist = qi->qf_listcount++;
901     qi->qf_lists[qi->qf_curlist].qf_index = 0;
902     qi->qf_lists[qi->qf_curlist].qf_count = 0;
903     if (qf_title != NULL)
904     {
905 	char_u *p = alloc((int)STRLEN(qf_title) + 2);
906 
907 	qi->qf_lists[qi->qf_curlist].qf_title = p;
908 	if (p != NULL)
909 	    sprintf((char *)p, ":%s", (char *)qf_title);
910     }
911     else
912 	qi->qf_lists[qi->qf_curlist].qf_title = NULL;
913 }
914 
915 /*
916  * Free a location list
917  */
918     static void
919 ll_free_all(pqi)
920     qf_info_T	**pqi;
921 {
922     int		i;
923     qf_info_T	*qi;
924 
925     qi = *pqi;
926     if (qi == NULL)
927 	return;
928     *pqi = NULL;	/* Remove reference to this list */
929 
930     qi->qf_refcount--;
931     if (qi->qf_refcount < 1)
932     {
933 	/* No references to this location list */
934 	for (i = 0; i < qi->qf_listcount; ++i)
935 	    qf_free(qi, i);
936 	vim_free(qi);
937     }
938 }
939 
940     void
941 qf_free_all(wp)
942     win_T	*wp;
943 {
944     int		i;
945     qf_info_T	*qi = &ql_info;
946 
947     if (wp != NULL)
948     {
949 	/* location list */
950 	ll_free_all(&wp->w_llist);
951 	ll_free_all(&wp->w_llist_ref);
952     }
953     else
954 	/* quickfix list */
955 	for (i = 0; i < qi->qf_listcount; ++i)
956 	    qf_free(qi, i);
957 }
958 
959 /*
960  * Add an entry to the end of the list of errors.
961  * Returns OK or FAIL.
962  */
963     static int
964 qf_add_entry(qi, prevp, dir, fname, bufnum, mesg, lnum, col, vis_col, pattern,
965 	     nr, type, valid)
966     qf_info_T	*qi;		/* quickfix list */
967     qfline_T	**prevp;	/* pointer to previously added entry or NULL */
968     char_u	*dir;		/* optional directory name */
969     char_u	*fname;		/* file name or NULL */
970     int		bufnum;		/* buffer number or zero */
971     char_u	*mesg;		/* message */
972     long	lnum;		/* line number */
973     int		col;		/* column */
974     int		vis_col;	/* using visual column */
975     char_u	*pattern;	/* search pattern */
976     int		nr;		/* error number */
977     int		type;		/* type character */
978     int		valid;		/* valid entry */
979 {
980     qfline_T	*qfp;
981 
982     if ((qfp = (qfline_T *)alloc((unsigned)sizeof(qfline_T))) == NULL)
983 	return FAIL;
984     if (bufnum != 0)
985 	qfp->qf_fnum = bufnum;
986     else
987 	qfp->qf_fnum = qf_get_fnum(dir, fname);
988     if ((qfp->qf_text = vim_strsave(mesg)) == NULL)
989     {
990 	vim_free(qfp);
991 	return FAIL;
992     }
993     qfp->qf_lnum = lnum;
994     qfp->qf_col = col;
995     qfp->qf_viscol = vis_col;
996     if (pattern == NULL || *pattern == NUL)
997 	qfp->qf_pattern = NULL;
998     else if ((qfp->qf_pattern = vim_strsave(pattern)) == NULL)
999     {
1000 	vim_free(qfp->qf_text);
1001 	vim_free(qfp);
1002 	return FAIL;
1003     }
1004     qfp->qf_nr = nr;
1005     if (type != 1 && !vim_isprintc(type)) /* only printable chars allowed */
1006 	type = 0;
1007     qfp->qf_type = type;
1008     qfp->qf_valid = valid;
1009 
1010     if (qi->qf_lists[qi->qf_curlist].qf_count == 0)
1011 				/* first element in the list */
1012     {
1013 	qi->qf_lists[qi->qf_curlist].qf_start = qfp;
1014 	qfp->qf_prev = qfp;	/* first element points to itself */
1015     }
1016     else
1017     {
1018 	qfp->qf_prev = *prevp;
1019 	(*prevp)->qf_next = qfp;
1020     }
1021     qfp->qf_next = qfp;	/* last element points to itself */
1022     qfp->qf_cleared = FALSE;
1023     *prevp = qfp;
1024     ++qi->qf_lists[qi->qf_curlist].qf_count;
1025     if (qi->qf_lists[qi->qf_curlist].qf_index == 0 && qfp->qf_valid)
1026 				/* first valid entry */
1027     {
1028 	qi->qf_lists[qi->qf_curlist].qf_index =
1029 	    qi->qf_lists[qi->qf_curlist].qf_count;
1030 	qi->qf_lists[qi->qf_curlist].qf_ptr = qfp;
1031     }
1032 
1033     return OK;
1034 }
1035 
1036 /*
1037  * Allocate a new location list
1038  */
1039     static qf_info_T *
1040 ll_new_list()
1041 {
1042     qf_info_T *qi;
1043 
1044     qi = (qf_info_T *)alloc((unsigned)sizeof(qf_info_T));
1045     if (qi != NULL)
1046     {
1047 	vim_memset(qi, 0, (size_t)(sizeof(qf_info_T)));
1048 	qi->qf_refcount++;
1049     }
1050 
1051     return qi;
1052 }
1053 
1054 /*
1055  * Return the location list for window 'wp'.
1056  * If not present, allocate a location list
1057  */
1058     static qf_info_T *
1059 ll_get_or_alloc_list(wp)
1060     win_T   *wp;
1061 {
1062     if (IS_LL_WINDOW(wp))
1063 	/* For a location list window, use the referenced location list */
1064 	return wp->w_llist_ref;
1065 
1066     /*
1067      * For a non-location list window, w_llist_ref should not point to a
1068      * location list.
1069      */
1070     ll_free_all(&wp->w_llist_ref);
1071 
1072     if (wp->w_llist == NULL)
1073 	wp->w_llist = ll_new_list();	    /* new location list */
1074     return wp->w_llist;
1075 }
1076 
1077 /*
1078  * Copy the location list from window "from" to window "to".
1079  */
1080     void
1081 copy_loclist(from, to)
1082     win_T	*from;
1083     win_T	*to;
1084 {
1085     qf_info_T	*qi;
1086     int		idx;
1087     int		i;
1088 
1089     /*
1090      * When copying from a location list window, copy the referenced
1091      * location list. For other windows, copy the location list for
1092      * that window.
1093      */
1094     if (IS_LL_WINDOW(from))
1095 	qi = from->w_llist_ref;
1096     else
1097 	qi = from->w_llist;
1098 
1099     if (qi == NULL)		    /* no location list to copy */
1100 	return;
1101 
1102     /* allocate a new location list */
1103     if ((to->w_llist = ll_new_list()) == NULL)
1104 	return;
1105 
1106     to->w_llist->qf_listcount = qi->qf_listcount;
1107 
1108     /* Copy the location lists one at a time */
1109     for (idx = 0; idx < qi->qf_listcount; idx++)
1110     {
1111 	qf_list_T   *from_qfl;
1112 	qf_list_T   *to_qfl;
1113 
1114 	to->w_llist->qf_curlist = idx;
1115 
1116 	from_qfl = &qi->qf_lists[idx];
1117 	to_qfl = &to->w_llist->qf_lists[idx];
1118 
1119 	/* Some of the fields are populated by qf_add_entry() */
1120 	to_qfl->qf_nonevalid = from_qfl->qf_nonevalid;
1121 	to_qfl->qf_count = 0;
1122 	to_qfl->qf_index = 0;
1123 	to_qfl->qf_start = NULL;
1124 	to_qfl->qf_ptr = NULL;
1125 	if (from_qfl->qf_title != NULL)
1126 	    to_qfl->qf_title = vim_strsave(from_qfl->qf_title);
1127 	else
1128 	    to_qfl->qf_title = NULL;
1129 
1130 	if (from_qfl->qf_count)
1131 	{
1132 	    qfline_T    *from_qfp;
1133 	    qfline_T    *prevp = NULL;
1134 
1135 	    /* copy all the location entries in this list */
1136 	    for (i = 0, from_qfp = from_qfl->qf_start; i < from_qfl->qf_count;
1137 		 ++i, from_qfp = from_qfp->qf_next)
1138 	    {
1139 		if (qf_add_entry(to->w_llist, &prevp,
1140 				 NULL,
1141 				 NULL,
1142 				 0,
1143 				 from_qfp->qf_text,
1144 				 from_qfp->qf_lnum,
1145 				 from_qfp->qf_col,
1146 				 from_qfp->qf_viscol,
1147 				 from_qfp->qf_pattern,
1148 				 from_qfp->qf_nr,
1149 				 0,
1150 				 from_qfp->qf_valid) == FAIL)
1151 		{
1152 		    qf_free_all(to);
1153 		    return;
1154 		}
1155 		/*
1156 		 * qf_add_entry() will not set the qf_num field, as the
1157 		 * directory and file names are not supplied. So the qf_fnum
1158 		 * field is copied here.
1159 		 */
1160 		prevp->qf_fnum = from_qfp->qf_fnum; /* file number */
1161 		prevp->qf_type = from_qfp->qf_type; /* error type */
1162 		if (from_qfl->qf_ptr == from_qfp)
1163 		    to_qfl->qf_ptr = prevp;	    /* current location */
1164 	    }
1165 	}
1166 
1167 	to_qfl->qf_index = from_qfl->qf_index;	/* current index in the list */
1168 
1169 	/* When no valid entries are present in the list, qf_ptr points to
1170 	 * the first item in the list */
1171 	if (to_qfl->qf_nonevalid)
1172 	    to_qfl->qf_ptr = to_qfl->qf_start;
1173     }
1174 
1175     to->w_llist->qf_curlist = qi->qf_curlist;	/* current list */
1176 }
1177 
1178 /*
1179  * get buffer number for file "dir.name"
1180  */
1181     static int
1182 qf_get_fnum(directory, fname)
1183     char_u   *directory;
1184     char_u   *fname;
1185 {
1186     if (fname == NULL || *fname == NUL)		/* no file name */
1187 	return 0;
1188     {
1189 	char_u	    *ptr;
1190 	int	    fnum;
1191 
1192 #ifdef VMS
1193 	vms_remove_version(fname);
1194 #endif
1195 #ifdef BACKSLASH_IN_FILENAME
1196 	if (directory != NULL)
1197 	    slash_adjust(directory);
1198 	slash_adjust(fname);
1199 #endif
1200 	if (directory != NULL && !vim_isAbsName(fname)
1201 		&& (ptr = concat_fnames(directory, fname, TRUE)) != NULL)
1202 	{
1203 	    /*
1204 	     * Here we check if the file really exists.
1205 	     * This should normally be true, but if make works without
1206 	     * "leaving directory"-messages we might have missed a
1207 	     * directory change.
1208 	     */
1209 	    if (mch_getperm(ptr) < 0)
1210 	    {
1211 		vim_free(ptr);
1212 		directory = qf_guess_filepath(fname);
1213 		if (directory)
1214 		    ptr = concat_fnames(directory, fname, TRUE);
1215 		else
1216 		    ptr = vim_strsave(fname);
1217 	    }
1218 	    /* Use concatenated directory name and file name */
1219 	    fnum = buflist_add(ptr, 0);
1220 	    vim_free(ptr);
1221 	    return fnum;
1222 	}
1223 	return buflist_add(fname, 0);
1224     }
1225 }
1226 
1227 /*
1228  * push dirbuf onto the directory stack and return pointer to actual dir or
1229  * NULL on error
1230  */
1231     static char_u *
1232 qf_push_dir(dirbuf, stackptr)
1233     char_u		*dirbuf;
1234     struct dir_stack_T	**stackptr;
1235 {
1236     struct dir_stack_T  *ds_new;
1237     struct dir_stack_T  *ds_ptr;
1238 
1239     /* allocate new stack element and hook it in */
1240     ds_new = (struct dir_stack_T *)alloc((unsigned)sizeof(struct dir_stack_T));
1241     if (ds_new == NULL)
1242 	return NULL;
1243 
1244     ds_new->next = *stackptr;
1245     *stackptr = ds_new;
1246 
1247     /* store directory on the stack */
1248     if (vim_isAbsName(dirbuf)
1249 	    || (*stackptr)->next == NULL
1250 	    || (*stackptr && dir_stack != *stackptr))
1251 	(*stackptr)->dirname = vim_strsave(dirbuf);
1252     else
1253     {
1254 	/* Okay we don't have an absolute path.
1255 	 * dirbuf must be a subdir of one of the directories on the stack.
1256 	 * Let's search...
1257 	 */
1258 	ds_new = (*stackptr)->next;
1259 	(*stackptr)->dirname = NULL;
1260 	while (ds_new)
1261 	{
1262 	    vim_free((*stackptr)->dirname);
1263 	    (*stackptr)->dirname = concat_fnames(ds_new->dirname, dirbuf,
1264 		    TRUE);
1265 	    if (mch_isdir((*stackptr)->dirname) == TRUE)
1266 		break;
1267 
1268 	    ds_new = ds_new->next;
1269 	}
1270 
1271 	/* clean up all dirs we already left */
1272 	while ((*stackptr)->next != ds_new)
1273 	{
1274 	    ds_ptr = (*stackptr)->next;
1275 	    (*stackptr)->next = (*stackptr)->next->next;
1276 	    vim_free(ds_ptr->dirname);
1277 	    vim_free(ds_ptr);
1278 	}
1279 
1280 	/* Nothing found -> it must be on top level */
1281 	if (ds_new == NULL)
1282 	{
1283 	    vim_free((*stackptr)->dirname);
1284 	    (*stackptr)->dirname = vim_strsave(dirbuf);
1285 	}
1286     }
1287 
1288     if ((*stackptr)->dirname != NULL)
1289 	return (*stackptr)->dirname;
1290     else
1291     {
1292 	ds_ptr = *stackptr;
1293 	*stackptr = (*stackptr)->next;
1294 	vim_free(ds_ptr);
1295 	return NULL;
1296     }
1297 }
1298 
1299 
1300 /*
1301  * pop dirbuf from the directory stack and return previous directory or NULL if
1302  * stack is empty
1303  */
1304     static char_u *
1305 qf_pop_dir(stackptr)
1306     struct dir_stack_T	**stackptr;
1307 {
1308     struct dir_stack_T  *ds_ptr;
1309 
1310     /* TODO: Should we check if dirbuf is the directory on top of the stack?
1311      * What to do if it isn't? */
1312 
1313     /* pop top element and free it */
1314     if (*stackptr != NULL)
1315     {
1316 	ds_ptr = *stackptr;
1317 	*stackptr = (*stackptr)->next;
1318 	vim_free(ds_ptr->dirname);
1319 	vim_free(ds_ptr);
1320     }
1321 
1322     /* return NEW top element as current dir or NULL if stack is empty*/
1323     return *stackptr ? (*stackptr)->dirname : NULL;
1324 }
1325 
1326 /*
1327  * clean up directory stack
1328  */
1329     static void
1330 qf_clean_dir_stack(stackptr)
1331     struct dir_stack_T	**stackptr;
1332 {
1333     struct dir_stack_T  *ds_ptr;
1334 
1335     while ((ds_ptr = *stackptr) != NULL)
1336     {
1337 	*stackptr = (*stackptr)->next;
1338 	vim_free(ds_ptr->dirname);
1339 	vim_free(ds_ptr);
1340     }
1341 }
1342 
1343 /*
1344  * Check in which directory of the directory stack the given file can be
1345  * found.
1346  * Returns a pointer to the directory name or NULL if not found
1347  * Cleans up intermediate directory entries.
1348  *
1349  * TODO: How to solve the following problem?
1350  * If we have the this directory tree:
1351  *     ./
1352  *     ./aa
1353  *     ./aa/bb
1354  *     ./bb
1355  *     ./bb/x.c
1356  * and make says:
1357  *     making all in aa
1358  *     making all in bb
1359  *     x.c:9: Error
1360  * Then qf_push_dir thinks we are in ./aa/bb, but we are in ./bb.
1361  * qf_guess_filepath will return NULL.
1362  */
1363     static char_u *
1364 qf_guess_filepath(filename)
1365     char_u *filename;
1366 {
1367     struct dir_stack_T     *ds_ptr;
1368     struct dir_stack_T     *ds_tmp;
1369     char_u		   *fullname;
1370 
1371     /* no dirs on the stack - there's nothing we can do */
1372     if (dir_stack == NULL)
1373 	return NULL;
1374 
1375     ds_ptr = dir_stack->next;
1376     fullname = NULL;
1377     while (ds_ptr)
1378     {
1379 	vim_free(fullname);
1380 	fullname = concat_fnames(ds_ptr->dirname, filename, TRUE);
1381 
1382 	/* If concat_fnames failed, just go on. The worst thing that can happen
1383 	 * is that we delete the entire stack.
1384 	 */
1385 	if ((fullname != NULL) && (mch_getperm(fullname) >= 0))
1386 	    break;
1387 
1388 	ds_ptr = ds_ptr->next;
1389     }
1390 
1391     vim_free(fullname);
1392 
1393     /* clean up all dirs we already left */
1394     while (dir_stack->next != ds_ptr)
1395     {
1396 	ds_tmp = dir_stack->next;
1397 	dir_stack->next = dir_stack->next->next;
1398 	vim_free(ds_tmp->dirname);
1399 	vim_free(ds_tmp);
1400     }
1401 
1402     return ds_ptr==NULL? NULL: ds_ptr->dirname;
1403 
1404 }
1405 
1406 /*
1407  * jump to a quickfix line
1408  * if dir == FORWARD go "errornr" valid entries forward
1409  * if dir == BACKWARD go "errornr" valid entries backward
1410  * if dir == FORWARD_FILE go "errornr" valid entries files backward
1411  * if dir == BACKWARD_FILE go "errornr" valid entries files backward
1412  * else if "errornr" is zero, redisplay the same line
1413  * else go to entry "errornr"
1414  */
1415     void
1416 qf_jump(qi, dir, errornr, forceit)
1417     qf_info_T	*qi;
1418     int		dir;
1419     int		errornr;
1420     int		forceit;
1421 {
1422     qf_info_T		*ll_ref;
1423     qfline_T		*qf_ptr;
1424     qfline_T		*old_qf_ptr;
1425     int			qf_index;
1426     int			old_qf_fnum;
1427     int			old_qf_index;
1428     int			prev_index;
1429     static char_u	*e_no_more_items = (char_u *)N_("E553: No more items");
1430     char_u		*err = e_no_more_items;
1431     linenr_T		i;
1432     buf_T		*old_curbuf;
1433     linenr_T		old_lnum;
1434     colnr_T		screen_col;
1435     colnr_T		char_col;
1436     char_u		*line;
1437 #ifdef FEAT_WINDOWS
1438     char_u		*old_swb = p_swb;
1439     unsigned		old_swb_flags = swb_flags;
1440     int			opened_window = FALSE;
1441     win_T		*win;
1442     win_T		*altwin;
1443     int			flags;
1444 #endif
1445     win_T		*oldwin = curwin;
1446     int			print_message = TRUE;
1447     int			len;
1448 #ifdef FEAT_FOLDING
1449     int			old_KeyTyped = KeyTyped; /* getting file may reset it */
1450 #endif
1451     int			ok = OK;
1452     int			usable_win;
1453 
1454     if (qi == NULL)
1455 	qi = &ql_info;
1456 
1457     if (qi->qf_curlist >= qi->qf_listcount
1458 	|| qi->qf_lists[qi->qf_curlist].qf_count == 0)
1459     {
1460 	EMSG(_(e_quickfix));
1461 	return;
1462     }
1463 
1464     qf_ptr = qi->qf_lists[qi->qf_curlist].qf_ptr;
1465     old_qf_ptr = qf_ptr;
1466     qf_index = qi->qf_lists[qi->qf_curlist].qf_index;
1467     old_qf_index = qf_index;
1468     if (dir == FORWARD || dir == FORWARD_FILE)	    /* next valid entry */
1469     {
1470 	while (errornr--)
1471 	{
1472 	    old_qf_ptr = qf_ptr;
1473 	    prev_index = qf_index;
1474 	    old_qf_fnum = qf_ptr->qf_fnum;
1475 	    do
1476 	    {
1477 		if (qf_index == qi->qf_lists[qi->qf_curlist].qf_count
1478 						   || qf_ptr->qf_next == NULL)
1479 		{
1480 		    qf_ptr = old_qf_ptr;
1481 		    qf_index = prev_index;
1482 		    if (err != NULL)
1483 		    {
1484 			EMSG(_(err));
1485 			goto theend;
1486 		    }
1487 		    errornr = 0;
1488 		    break;
1489 		}
1490 		++qf_index;
1491 		qf_ptr = qf_ptr->qf_next;
1492 	    } while ((!qi->qf_lists[qi->qf_curlist].qf_nonevalid
1493 		      && !qf_ptr->qf_valid)
1494 		  || (dir == FORWARD_FILE && qf_ptr->qf_fnum == old_qf_fnum));
1495 	    err = NULL;
1496 	}
1497     }
1498     else if (dir == BACKWARD || dir == BACKWARD_FILE)  /* prev. valid entry */
1499     {
1500 	while (errornr--)
1501 	{
1502 	    old_qf_ptr = qf_ptr;
1503 	    prev_index = qf_index;
1504 	    old_qf_fnum = qf_ptr->qf_fnum;
1505 	    do
1506 	    {
1507 		if (qf_index == 1 || qf_ptr->qf_prev == NULL)
1508 		{
1509 		    qf_ptr = old_qf_ptr;
1510 		    qf_index = prev_index;
1511 		    if (err != NULL)
1512 		    {
1513 			EMSG(_(err));
1514 			goto theend;
1515 		    }
1516 		    errornr = 0;
1517 		    break;
1518 		}
1519 		--qf_index;
1520 		qf_ptr = qf_ptr->qf_prev;
1521 	    } while ((!qi->qf_lists[qi->qf_curlist].qf_nonevalid
1522 		      && !qf_ptr->qf_valid)
1523 		  || (dir == BACKWARD_FILE && qf_ptr->qf_fnum == old_qf_fnum));
1524 	    err = NULL;
1525 	}
1526     }
1527     else if (errornr != 0)	/* go to specified number */
1528     {
1529 	while (errornr < qf_index && qf_index > 1 && qf_ptr->qf_prev != NULL)
1530 	{
1531 	    --qf_index;
1532 	    qf_ptr = qf_ptr->qf_prev;
1533 	}
1534 	while (errornr > qf_index && qf_index <
1535 				    qi->qf_lists[qi->qf_curlist].qf_count
1536 						   && qf_ptr->qf_next != NULL)
1537 	{
1538 	    ++qf_index;
1539 	    qf_ptr = qf_ptr->qf_next;
1540 	}
1541     }
1542 
1543 #ifdef FEAT_WINDOWS
1544     qi->qf_lists[qi->qf_curlist].qf_index = qf_index;
1545     if (qf_win_pos_update(qi, old_qf_index))
1546 	/* No need to print the error message if it's visible in the error
1547 	 * window */
1548 	print_message = FALSE;
1549 
1550     /*
1551      * For ":helpgrep" find a help window or open one.
1552      */
1553     if (qf_ptr->qf_type == 1 && (!curwin->w_buffer->b_help || cmdmod.tab != 0))
1554     {
1555 	win_T	*wp;
1556 
1557 	if (cmdmod.tab != 0)
1558 	    wp = NULL;
1559 	else
1560 	    for (wp = firstwin; wp != NULL; wp = wp->w_next)
1561 		if (wp->w_buffer != NULL && wp->w_buffer->b_help)
1562 		    break;
1563 	if (wp != NULL && wp->w_buffer->b_nwindows > 0)
1564 	    win_enter(wp, TRUE);
1565 	else
1566 	{
1567 	    /*
1568 	     * Split off help window; put it at far top if no position
1569 	     * specified, the current window is vertically split and narrow.
1570 	     */
1571 	    flags = WSP_HELP;
1572 # ifdef FEAT_VERTSPLIT
1573 	    if (cmdmod.split == 0 && curwin->w_width != Columns
1574 						      && curwin->w_width < 80)
1575 		flags |= WSP_TOP;
1576 # endif
1577 	    if (qi != &ql_info)
1578 		flags |= WSP_NEWLOC;  /* don't copy the location list */
1579 
1580 	    if (win_split(0, flags) == FAIL)
1581 		goto theend;
1582 	    opened_window = TRUE;	/* close it when fail */
1583 
1584 	    if (curwin->w_height < p_hh)
1585 		win_setheight((int)p_hh);
1586 
1587 	    if (qi != &ql_info)	    /* not a quickfix list */
1588 	    {
1589 		/* The new window should use the supplied location list */
1590 		curwin->w_llist = qi;
1591 		qi->qf_refcount++;
1592 	    }
1593 	}
1594 
1595 	if (!p_im)
1596 	    restart_edit = 0;	    /* don't want insert mode in help file */
1597     }
1598 
1599     /*
1600      * If currently in the quickfix window, find another window to show the
1601      * file in.
1602      */
1603     if (bt_quickfix(curbuf) && !opened_window)
1604     {
1605 	/*
1606 	 * If there is no file specified, we don't know where to go.
1607 	 * But do advance, otherwise ":cn" gets stuck.
1608 	 */
1609 	if (qf_ptr->qf_fnum == 0)
1610 	    goto theend;
1611 
1612 	/* Locate a window showing a normal buffer */
1613 	usable_win = 0;
1614 	FOR_ALL_WINDOWS(win)
1615 	    if (win->w_buffer->b_p_bt[0] == NUL)
1616 	    {
1617 		usable_win = 1;
1618 		break;
1619 	    }
1620 
1621 	/*
1622 	 * If no usable window is found and 'switchbuf' contains "usetab"
1623 	 * then search in other tabs.
1624 	 */
1625 	if (!usable_win && (swb_flags & SWB_USETAB))
1626 	{
1627 	    tabpage_T	*tp;
1628 	    win_T	*wp;
1629 
1630 	    FOR_ALL_TAB_WINDOWS(tp, wp)
1631 	    {
1632 		if (wp->w_buffer->b_fnum == qf_ptr->qf_fnum)
1633 		{
1634 		    goto_tabpage_win(tp, wp);
1635 		    usable_win = 1;
1636 		    goto win_found;
1637 		}
1638 	    }
1639 	}
1640 win_found:
1641 
1642 	/*
1643 	 * If there is only one window and it is the quickfix window, create a
1644 	 * new one above the quickfix window.
1645 	 */
1646 	if (((firstwin == lastwin) && bt_quickfix(curbuf)) || !usable_win)
1647 	{
1648 	    ll_ref = curwin->w_llist_ref;
1649 
1650 	    flags = WSP_ABOVE;
1651 	    if (ll_ref != NULL)
1652 		flags |= WSP_NEWLOC;
1653 	    if (win_split(0, flags) == FAIL)
1654 		goto failed;		/* not enough room for window */
1655 	    opened_window = TRUE;	/* close it when fail */
1656 	    p_swb = empty_option;	/* don't split again */
1657 	    swb_flags = 0;
1658 	    RESET_BINDING(curwin);
1659 	    if (ll_ref != NULL)
1660 	    {
1661 		/* The new window should use the location list from the
1662 		 * location list window */
1663 		curwin->w_llist = ll_ref;
1664 		ll_ref->qf_refcount++;
1665 	    }
1666 	}
1667 	else
1668 	{
1669 	    if (curwin->w_llist_ref != NULL)
1670 	    {
1671 		/* In a location window */
1672 		ll_ref = curwin->w_llist_ref;
1673 
1674 		/* Find the window with the same location list */
1675 		FOR_ALL_WINDOWS(win)
1676 		    if (win->w_llist == ll_ref)
1677 			break;
1678 		if (win == NULL)
1679 		{
1680 		    /* Find the window showing the selected file */
1681 		    FOR_ALL_WINDOWS(win)
1682 			if (win->w_buffer->b_fnum == qf_ptr->qf_fnum)
1683 			    break;
1684 		    if (win == NULL)
1685 		    {
1686 			/* Find a previous usable window */
1687 			win = curwin;
1688 			do
1689 			{
1690 			    if (win->w_buffer->b_p_bt[0] == NUL)
1691 				break;
1692 			    if (win->w_prev == NULL)
1693 				win = lastwin;	/* wrap around the top */
1694 			    else
1695 				win = win->w_prev; /* go to previous window */
1696 			} while (win != curwin);
1697 		    }
1698 		}
1699 		win_goto(win);
1700 
1701 		/* If the location list for the window is not set, then set it
1702 		 * to the location list from the location window */
1703 		if (win->w_llist == NULL)
1704 		{
1705 		    win->w_llist = ll_ref;
1706 		    ll_ref->qf_refcount++;
1707 		}
1708 	    }
1709 	    else
1710 	    {
1711 
1712 	    /*
1713 	     * Try to find a window that shows the right buffer.
1714 	     * Default to the window just above the quickfix buffer.
1715 	     */
1716 	    win = curwin;
1717 	    altwin = NULL;
1718 	    for (;;)
1719 	    {
1720 		if (win->w_buffer->b_fnum == qf_ptr->qf_fnum)
1721 		    break;
1722 		if (win->w_prev == NULL)
1723 		    win = lastwin;	/* wrap around the top */
1724 		else
1725 		    win = win->w_prev;	/* go to previous window */
1726 
1727 		if (IS_QF_WINDOW(win))
1728 		{
1729 		    /* Didn't find it, go to the window before the quickfix
1730 		     * window. */
1731 		    if (altwin != NULL)
1732 			win = altwin;
1733 		    else if (curwin->w_prev != NULL)
1734 			win = curwin->w_prev;
1735 		    else
1736 			win = curwin->w_next;
1737 		    break;
1738 		}
1739 
1740 		/* Remember a usable window. */
1741 		if (altwin == NULL && !win->w_p_pvw
1742 					   && win->w_buffer->b_p_bt[0] == NUL)
1743 		    altwin = win;
1744 	    }
1745 
1746 	    win_goto(win);
1747 	    }
1748 	}
1749     }
1750 #endif
1751 
1752     /*
1753      * If there is a file name,
1754      * read the wanted file if needed, and check autowrite etc.
1755      */
1756     old_curbuf = curbuf;
1757     old_lnum = curwin->w_cursor.lnum;
1758 
1759     if (qf_ptr->qf_fnum != 0)
1760     {
1761 	if (qf_ptr->qf_type == 1)
1762 	{
1763 	    /* Open help file (do_ecmd() will set b_help flag, readfile() will
1764 	     * set b_p_ro flag). */
1765 	    if (!can_abandon(curbuf, forceit))
1766 	    {
1767 		EMSG(_(e_nowrtmsg));
1768 		ok = FALSE;
1769 	    }
1770 	    else
1771 		ok = do_ecmd(qf_ptr->qf_fnum, NULL, NULL, NULL, (linenr_T)1,
1772 					   ECMD_HIDE + ECMD_SET_HELP,
1773 					   oldwin == curwin ? curwin : NULL);
1774 	}
1775 	else
1776 	    ok = buflist_getfile(qf_ptr->qf_fnum,
1777 			    (linenr_T)1, GETF_SETMARK | GETF_SWITCH, forceit);
1778     }
1779 
1780     if (ok == OK)
1781     {
1782 	/* When not switched to another buffer, still need to set pc mark */
1783 	if (curbuf == old_curbuf)
1784 	    setpcmark();
1785 
1786 	if (qf_ptr->qf_pattern == NULL)
1787 	{
1788 	    /*
1789 	     * Go to line with error, unless qf_lnum is 0.
1790 	     */
1791 	    i = qf_ptr->qf_lnum;
1792 	    if (i > 0)
1793 	    {
1794 		if (i > curbuf->b_ml.ml_line_count)
1795 		    i = curbuf->b_ml.ml_line_count;
1796 		curwin->w_cursor.lnum = i;
1797 	    }
1798 	    if (qf_ptr->qf_col > 0)
1799 	    {
1800 		curwin->w_cursor.col = qf_ptr->qf_col - 1;
1801 		if (qf_ptr->qf_viscol == TRUE)
1802 		{
1803 		    /*
1804 		     * Check each character from the beginning of the error
1805 		     * line up to the error column.  For each tab character
1806 		     * found, reduce the error column value by the length of
1807 		     * a tab character.
1808 		     */
1809 		    line = ml_get_curline();
1810 		    screen_col = 0;
1811 		    for (char_col = 0; char_col < curwin->w_cursor.col; ++char_col)
1812 		    {
1813 			if (*line == NUL)
1814 			    break;
1815 			if (*line++ == '\t')
1816 			{
1817 			    curwin->w_cursor.col -= 7 - (screen_col % 8);
1818 			    screen_col += 8 - (screen_col % 8);
1819 			}
1820 			else
1821 			    ++screen_col;
1822 		    }
1823 		}
1824 		check_cursor();
1825 	    }
1826 	    else
1827 		beginline(BL_WHITE | BL_FIX);
1828 	}
1829 	else
1830 	{
1831 	    pos_T save_cursor;
1832 
1833 	    /* Move the cursor to the first line in the buffer */
1834 	    save_cursor = curwin->w_cursor;
1835 	    curwin->w_cursor.lnum = 0;
1836 	    if (!do_search(NULL, '/', qf_ptr->qf_pattern, (long)1,
1837 							   SEARCH_KEEP, NULL))
1838 		curwin->w_cursor = save_cursor;
1839 	}
1840 
1841 #ifdef FEAT_FOLDING
1842 	if ((fdo_flags & FDO_QUICKFIX) && old_KeyTyped)
1843 	    foldOpenCursor();
1844 #endif
1845 	if (print_message)
1846 	{
1847 	    /* Update the screen before showing the message */
1848 	    update_topline_redraw();
1849 	    sprintf((char *)IObuff, _("(%d of %d)%s%s: "), qf_index,
1850 		    qi->qf_lists[qi->qf_curlist].qf_count,
1851 		    qf_ptr->qf_cleared ? _(" (line deleted)") : "",
1852 		    (char *)qf_types(qf_ptr->qf_type, qf_ptr->qf_nr));
1853 	    /* Add the message, skipping leading whitespace and newlines. */
1854 	    len = (int)STRLEN(IObuff);
1855 	    qf_fmt_text(skipwhite(qf_ptr->qf_text), IObuff + len, IOSIZE - len);
1856 
1857 	    /* Output the message.  Overwrite to avoid scrolling when the 'O'
1858 	     * flag is present in 'shortmess'; But when not jumping, print the
1859 	     * whole message. */
1860 	    i = msg_scroll;
1861 	    if (curbuf == old_curbuf && curwin->w_cursor.lnum == old_lnum)
1862 		msg_scroll = TRUE;
1863 	    else if (!msg_scrolled && shortmess(SHM_OVERALL))
1864 		msg_scroll = FALSE;
1865 	    msg_attr_keep(IObuff, 0, TRUE);
1866 	    msg_scroll = i;
1867 	}
1868     }
1869     else
1870     {
1871 #ifdef FEAT_WINDOWS
1872 	if (opened_window)
1873 	    win_close(curwin, TRUE);    /* Close opened window */
1874 #endif
1875 	if (qf_ptr->qf_fnum != 0)
1876 	{
1877 	    /*
1878 	     * Couldn't open file, so put index back where it was.  This could
1879 	     * happen if the file was readonly and we changed something.
1880 	     */
1881 #ifdef FEAT_WINDOWS
1882 failed:
1883 #endif
1884 	    qf_ptr = old_qf_ptr;
1885 	    qf_index = old_qf_index;
1886 	}
1887     }
1888 theend:
1889     qi->qf_lists[qi->qf_curlist].qf_ptr = qf_ptr;
1890     qi->qf_lists[qi->qf_curlist].qf_index = qf_index;
1891 #ifdef FEAT_WINDOWS
1892     if (p_swb != old_swb && opened_window)
1893     {
1894 	/* Restore old 'switchbuf' value, but not when an autocommand or
1895 	 * modeline has changed the value. */
1896 	if (p_swb == empty_option)
1897 	{
1898 	    p_swb = old_swb;
1899 	    swb_flags = old_swb_flags;
1900 	}
1901 	else
1902 	    free_string_option(old_swb);
1903     }
1904 #endif
1905 }
1906 
1907 /*
1908  * ":clist": list all errors
1909  * ":llist": list all locations
1910  */
1911     void
1912 qf_list(eap)
1913     exarg_T	*eap;
1914 {
1915     buf_T	*buf;
1916     char_u	*fname;
1917     qfline_T	*qfp;
1918     int		i;
1919     int		idx1 = 1;
1920     int		idx2 = -1;
1921     char_u	*arg = eap->arg;
1922     int		all = eap->forceit;	/* if not :cl!, only show
1923 						   recognised errors */
1924     qf_info_T	*qi = &ql_info;
1925 
1926     if (eap->cmdidx == CMD_llist)
1927     {
1928 	qi = GET_LOC_LIST(curwin);
1929 	if (qi == NULL)
1930 	{
1931 	    EMSG(_(e_loclist));
1932 	    return;
1933 	}
1934     }
1935 
1936     if (qi->qf_curlist >= qi->qf_listcount
1937 	|| qi->qf_lists[qi->qf_curlist].qf_count == 0)
1938     {
1939 	EMSG(_(e_quickfix));
1940 	return;
1941     }
1942     if (!get_list_range(&arg, &idx1, &idx2) || *arg != NUL)
1943     {
1944 	EMSG(_(e_trailing));
1945 	return;
1946     }
1947     i = qi->qf_lists[qi->qf_curlist].qf_count;
1948     if (idx1 < 0)
1949 	idx1 = (-idx1 > i) ? 0 : idx1 + i + 1;
1950     if (idx2 < 0)
1951 	idx2 = (-idx2 > i) ? 0 : idx2 + i + 1;
1952 
1953     if (qi->qf_lists[qi->qf_curlist].qf_nonevalid)
1954 	all = TRUE;
1955     qfp = qi->qf_lists[qi->qf_curlist].qf_start;
1956     for (i = 1; !got_int && i <= qi->qf_lists[qi->qf_curlist].qf_count; )
1957     {
1958 	if ((qfp->qf_valid || all) && idx1 <= i && i <= idx2)
1959 	{
1960 	    msg_putchar('\n');
1961 	    if (got_int)
1962 		break;
1963 
1964 	    fname = NULL;
1965 	    if (qfp->qf_fnum != 0
1966 			      && (buf = buflist_findnr(qfp->qf_fnum)) != NULL)
1967 	    {
1968 		fname = buf->b_fname;
1969 		if (qfp->qf_type == 1)	/* :helpgrep */
1970 		    fname = gettail(fname);
1971 	    }
1972 	    if (fname == NULL)
1973 		sprintf((char *)IObuff, "%2d", i);
1974 	    else
1975 		vim_snprintf((char *)IObuff, IOSIZE, "%2d %s",
1976 							    i, (char *)fname);
1977 	    msg_outtrans_attr(IObuff, i == qi->qf_lists[qi->qf_curlist].qf_index
1978 					   ? hl_attr(HLF_L) : hl_attr(HLF_D));
1979 	    if (qfp->qf_lnum == 0)
1980 		IObuff[0] = NUL;
1981 	    else if (qfp->qf_col == 0)
1982 		sprintf((char *)IObuff, ":%ld", qfp->qf_lnum);
1983 	    else
1984 		sprintf((char *)IObuff, ":%ld col %d",
1985 						   qfp->qf_lnum, qfp->qf_col);
1986 	    sprintf((char *)IObuff + STRLEN(IObuff), "%s:",
1987 				  (char *)qf_types(qfp->qf_type, qfp->qf_nr));
1988 	    msg_puts_attr(IObuff, hl_attr(HLF_N));
1989 	    if (qfp->qf_pattern != NULL)
1990 	    {
1991 		qf_fmt_text(qfp->qf_pattern, IObuff, IOSIZE);
1992 		STRCAT(IObuff, ":");
1993 		msg_puts(IObuff);
1994 	    }
1995 	    msg_puts((char_u *)" ");
1996 
1997 	    /* Remove newlines and leading whitespace from the text.  For an
1998 	     * unrecognized line keep the indent, the compiler may mark a word
1999 	     * with ^^^^. */
2000 	    qf_fmt_text((fname != NULL || qfp->qf_lnum != 0)
2001 				     ? skipwhite(qfp->qf_text) : qfp->qf_text,
2002 							      IObuff, IOSIZE);
2003 	    msg_prt_line(IObuff, FALSE);
2004 	    out_flush();		/* show one line at a time */
2005 	}
2006 
2007 	qfp = qfp->qf_next;
2008 	++i;
2009 	ui_breakcheck();
2010     }
2011 }
2012 
2013 /*
2014  * Remove newlines and leading whitespace from an error message.
2015  * Put the result in "buf[bufsize]".
2016  */
2017     static void
2018 qf_fmt_text(text, buf, bufsize)
2019     char_u	*text;
2020     char_u	*buf;
2021     int		bufsize;
2022 {
2023     int		i;
2024     char_u	*p = text;
2025 
2026     for (i = 0; *p != NUL && i < bufsize - 1; ++i)
2027     {
2028 	if (*p == '\n')
2029 	{
2030 	    buf[i] = ' ';
2031 	    while (*++p != NUL)
2032 		if (!vim_iswhite(*p) && *p != '\n')
2033 		    break;
2034 	}
2035 	else
2036 	    buf[i] = *p++;
2037     }
2038     buf[i] = NUL;
2039 }
2040 
2041 /*
2042  * ":colder [count]": Up in the quickfix stack.
2043  * ":cnewer [count]": Down in the quickfix stack.
2044  * ":lolder [count]": Up in the location list stack.
2045  * ":lnewer [count]": Down in the location list stack.
2046  */
2047     void
2048 qf_age(eap)
2049     exarg_T	*eap;
2050 {
2051     qf_info_T	*qi = &ql_info;
2052     int		count;
2053 
2054     if (eap->cmdidx == CMD_lolder || eap->cmdidx == CMD_lnewer)
2055     {
2056 	qi = GET_LOC_LIST(curwin);
2057 	if (qi == NULL)
2058 	{
2059 	    EMSG(_(e_loclist));
2060 	    return;
2061 	}
2062     }
2063 
2064     if (eap->addr_count != 0)
2065 	count = eap->line2;
2066     else
2067 	count = 1;
2068     while (count--)
2069     {
2070 	if (eap->cmdidx == CMD_colder || eap->cmdidx == CMD_lolder)
2071 	{
2072 	    if (qi->qf_curlist == 0)
2073 	    {
2074 		EMSG(_("E380: At bottom of quickfix stack"));
2075 		return;
2076 	    }
2077 	    --qi->qf_curlist;
2078 	}
2079 	else
2080 	{
2081 	    if (qi->qf_curlist >= qi->qf_listcount - 1)
2082 	    {
2083 		EMSG(_("E381: At top of quickfix stack"));
2084 		return;
2085 	    }
2086 	    ++qi->qf_curlist;
2087 	}
2088     }
2089     qf_msg(qi);
2090 
2091 }
2092 
2093     static void
2094 qf_msg(qi)
2095     qf_info_T	*qi;
2096 {
2097     smsg((char_u *)_("error list %d of %d; %d errors"),
2098 	    qi->qf_curlist + 1, qi->qf_listcount,
2099 	    qi->qf_lists[qi->qf_curlist].qf_count);
2100 #ifdef FEAT_WINDOWS
2101     qf_update_buffer(qi);
2102 #endif
2103 }
2104 
2105 /*
2106  * Free error list "idx".
2107  */
2108     static void
2109 qf_free(qi, idx)
2110     qf_info_T	*qi;
2111     int		idx;
2112 {
2113     qfline_T	*qfp;
2114 
2115     while (qi->qf_lists[idx].qf_count)
2116     {
2117 	qfp = qi->qf_lists[idx].qf_start->qf_next;
2118 	vim_free(qi->qf_lists[idx].qf_start->qf_text);
2119 	vim_free(qi->qf_lists[idx].qf_start->qf_pattern);
2120 	vim_free(qi->qf_lists[idx].qf_start);
2121 	qi->qf_lists[idx].qf_start = qfp;
2122 	--qi->qf_lists[idx].qf_count;
2123     }
2124     vim_free(qi->qf_lists[idx].qf_title);
2125     qi->qf_lists[idx].qf_title = NULL;
2126 }
2127 
2128 /*
2129  * qf_mark_adjust: adjust marks
2130  */
2131    void
2132 qf_mark_adjust(wp, line1, line2, amount, amount_after)
2133     win_T	*wp;
2134     linenr_T	line1;
2135     linenr_T	line2;
2136     long	amount;
2137     long	amount_after;
2138 {
2139     int		i;
2140     qfline_T	*qfp;
2141     int		idx;
2142     qf_info_T	*qi = &ql_info;
2143 
2144     if (wp != NULL)
2145     {
2146 	if (wp->w_llist == NULL)
2147 	    return;
2148 	qi = wp->w_llist;
2149     }
2150 
2151     for (idx = 0; idx < qi->qf_listcount; ++idx)
2152 	if (qi->qf_lists[idx].qf_count)
2153 	    for (i = 0, qfp = qi->qf_lists[idx].qf_start;
2154 		       i < qi->qf_lists[idx].qf_count; ++i, qfp = qfp->qf_next)
2155 		if (qfp->qf_fnum == curbuf->b_fnum)
2156 		{
2157 		    if (qfp->qf_lnum >= line1 && qfp->qf_lnum <= line2)
2158 		    {
2159 			if (amount == MAXLNUM)
2160 			    qfp->qf_cleared = TRUE;
2161 			else
2162 			    qfp->qf_lnum += amount;
2163 		    }
2164 		    else if (amount_after && qfp->qf_lnum > line2)
2165 			qfp->qf_lnum += amount_after;
2166 		}
2167 }
2168 
2169 /*
2170  * Make a nice message out of the error character and the error number:
2171  *  char    number	message
2172  *  e or E    0		" error"
2173  *  w or W    0		" warning"
2174  *  i or I    0		" info"
2175  *  0	      0		""
2176  *  other     0		" c"
2177  *  e or E    n		" error n"
2178  *  w or W    n		" warning n"
2179  *  i or I    n		" info n"
2180  *  0	      n		" error n"
2181  *  other     n		" c n"
2182  *  1	      x		""	:helpgrep
2183  */
2184     static char_u *
2185 qf_types(c, nr)
2186     int c, nr;
2187 {
2188     static char_u	buf[20];
2189     static char_u	cc[3];
2190     char_u		*p;
2191 
2192     if (c == 'W' || c == 'w')
2193 	p = (char_u *)" warning";
2194     else if (c == 'I' || c == 'i')
2195 	p = (char_u *)" info";
2196     else if (c == 'E' || c == 'e' || (c == 0 && nr > 0))
2197 	p = (char_u *)" error";
2198     else if (c == 0 || c == 1)
2199 	p = (char_u *)"";
2200     else
2201     {
2202 	cc[0] = ' ';
2203 	cc[1] = c;
2204 	cc[2] = NUL;
2205 	p = cc;
2206     }
2207 
2208     if (nr <= 0)
2209 	return p;
2210 
2211     sprintf((char *)buf, "%s %3d", (char *)p, nr);
2212     return buf;
2213 }
2214 
2215 #if defined(FEAT_WINDOWS) || defined(PROTO)
2216 /*
2217  * ":cwindow": open the quickfix window if we have errors to display,
2218  *	       close it if not.
2219  * ":lwindow": open the location list window if we have locations to display,
2220  *	       close it if not.
2221  */
2222     void
2223 ex_cwindow(eap)
2224     exarg_T	*eap;
2225 {
2226     qf_info_T	*qi = &ql_info;
2227     win_T	*win;
2228 
2229     if (eap->cmdidx == CMD_lwindow)
2230     {
2231 	qi = GET_LOC_LIST(curwin);
2232 	if (qi == NULL)
2233 	    return;
2234     }
2235 
2236     /* Look for an existing quickfix window.  */
2237     win = qf_find_win(qi);
2238 
2239     /*
2240      * If a quickfix window is open but we have no errors to display,
2241      * close the window.  If a quickfix window is not open, then open
2242      * it if we have errors; otherwise, leave it closed.
2243      */
2244     if (qi->qf_lists[qi->qf_curlist].qf_nonevalid
2245 	    || qi->qf_lists[qi->qf_curlist].qf_count == 0
2246 	    || qi->qf_curlist >= qi->qf_listcount)
2247     {
2248 	if (win != NULL)
2249 	    ex_cclose(eap);
2250     }
2251     else if (win == NULL)
2252 	ex_copen(eap);
2253 }
2254 
2255 /*
2256  * ":cclose": close the window showing the list of errors.
2257  * ":lclose": close the window showing the location list
2258  */
2259     void
2260 ex_cclose(eap)
2261     exarg_T	*eap;
2262 {
2263     win_T	*win = NULL;
2264     qf_info_T	*qi = &ql_info;
2265 
2266     if (eap->cmdidx == CMD_lclose || eap->cmdidx == CMD_lwindow)
2267     {
2268 	qi = GET_LOC_LIST(curwin);
2269 	if (qi == NULL)
2270 	    return;
2271     }
2272 
2273     /* Find existing quickfix window and close it. */
2274     win = qf_find_win(qi);
2275     if (win != NULL)
2276 	win_close(win, FALSE);
2277 }
2278 
2279 /*
2280  * ":copen": open a window that shows the list of errors.
2281  * ":lopen": open a window that shows the location list.
2282  */
2283     void
2284 ex_copen(eap)
2285     exarg_T	*eap;
2286 {
2287     qf_info_T	*qi = &ql_info;
2288     int		height;
2289     win_T	*win;
2290     tabpage_T	*prevtab = curtab;
2291     buf_T	*qf_buf;
2292     win_T	*oldwin = curwin;
2293 
2294     if (eap->cmdidx == CMD_lopen || eap->cmdidx == CMD_lwindow)
2295     {
2296 	qi = GET_LOC_LIST(curwin);
2297 	if (qi == NULL)
2298 	{
2299 	    EMSG(_(e_loclist));
2300 	    return;
2301 	}
2302     }
2303 
2304     if (eap->addr_count != 0)
2305 	height = eap->line2;
2306     else
2307 	height = QF_WINHEIGHT;
2308 
2309 #ifdef FEAT_VISUAL
2310     reset_VIsual_and_resel();			/* stop Visual mode */
2311 #endif
2312 #ifdef FEAT_GUI
2313     need_mouse_correct = TRUE;
2314 #endif
2315 
2316     /*
2317      * Find existing quickfix window, or open a new one.
2318      */
2319     win = qf_find_win(qi);
2320 
2321     if (win != NULL && cmdmod.tab == 0)
2322 	win_goto(win);
2323     else
2324     {
2325 	qf_buf = qf_find_buf(qi);
2326 
2327 	/* The current window becomes the previous window afterwards. */
2328 	win = curwin;
2329 
2330 	if (eap->cmdidx == CMD_copen || eap->cmdidx == CMD_cwindow)
2331 	    /* Create the new window at the very bottom. */
2332 	    win_goto(lastwin);
2333 	if (win_split(height, WSP_BELOW | WSP_NEWLOC) == FAIL)
2334 	    return;		/* not enough room for window */
2335 	RESET_BINDING(curwin);
2336 
2337 	if (eap->cmdidx == CMD_lopen || eap->cmdidx == CMD_lwindow)
2338 	{
2339 	    /*
2340 	     * For the location list window, create a reference to the
2341 	     * location list from the window 'win'.
2342 	     */
2343 	    curwin->w_llist_ref = win->w_llist;
2344 	    win->w_llist->qf_refcount++;
2345 	}
2346 
2347 	if (oldwin != curwin)
2348 	    oldwin = NULL;  /* don't store info when in another window */
2349 	if (qf_buf != NULL)
2350 	    /* Use the existing quickfix buffer */
2351 	    (void)do_ecmd(qf_buf->b_fnum, NULL, NULL, NULL, ECMD_ONE,
2352 					     ECMD_HIDE + ECMD_OLDBUF, oldwin);
2353 	else
2354 	{
2355 	    /* Create a new quickfix buffer */
2356 	    (void)do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, ECMD_HIDE, oldwin);
2357 	    /* switch off 'swapfile' */
2358 	    set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
2359 	    set_option_value((char_u *)"bt", 0L, (char_u *)"quickfix",
2360 								   OPT_LOCAL);
2361 	    set_option_value((char_u *)"bh", 0L, (char_u *)"wipe", OPT_LOCAL);
2362 	    RESET_BINDING(curwin);
2363 #ifdef FEAT_DIFF
2364 	    curwin->w_p_diff = FALSE;
2365 #endif
2366 #ifdef FEAT_FOLDING
2367 	    set_option_value((char_u *)"fdm", 0L, (char_u *)"manual",
2368 								   OPT_LOCAL);
2369 #endif
2370 	}
2371 
2372 	/* Only set the height when still in the same tab page and there is no
2373 	 * window to the side. */
2374 	if (curtab == prevtab
2375 #ifdef FEAT_VERTSPLIT
2376 		&& curwin->w_width == Columns
2377 #endif
2378 	   )
2379 	    win_setheight(height);
2380 	curwin->w_p_wfh = TRUE;	    /* set 'winfixheight' */
2381 	if (win_valid(win))
2382 	    prevwin = win;
2383     }
2384 
2385     /*
2386      * Fill the buffer with the quickfix list.
2387      */
2388     qf_fill_buffer(qi);
2389 
2390     if (qi->qf_lists[qi->qf_curlist].qf_title != NULL)
2391 	set_internal_string_var((char_u *)"w:quickfix_title",
2392 				       qi->qf_lists[qi->qf_curlist].qf_title);
2393 
2394     curwin->w_cursor.lnum = qi->qf_lists[qi->qf_curlist].qf_index;
2395     curwin->w_cursor.col = 0;
2396     check_cursor();
2397     update_topline();		/* scroll to show the line */
2398 }
2399 
2400 /*
2401  * Return the number of the current entry (line number in the quickfix
2402  * window).
2403  */
2404      linenr_T
2405 qf_current_entry(wp)
2406     win_T	*wp;
2407 {
2408     qf_info_T	*qi = &ql_info;
2409 
2410     if (IS_LL_WINDOW(wp))
2411 	/* In the location list window, use the referenced location list */
2412 	qi = wp->w_llist_ref;
2413 
2414     return qi->qf_lists[qi->qf_curlist].qf_index;
2415 }
2416 
2417 /*
2418  * Update the cursor position in the quickfix window to the current error.
2419  * Return TRUE if there is a quickfix window.
2420  */
2421     static int
2422 qf_win_pos_update(qi, old_qf_index)
2423     qf_info_T	*qi;
2424     int		old_qf_index;	/* previous qf_index or zero */
2425 {
2426     win_T	*win;
2427     int		qf_index = qi->qf_lists[qi->qf_curlist].qf_index;
2428 
2429     /*
2430      * Put the cursor on the current error in the quickfix window, so that
2431      * it's viewable.
2432      */
2433     win = qf_find_win(qi);
2434     if (win != NULL
2435 	    && qf_index <= win->w_buffer->b_ml.ml_line_count
2436 	    && old_qf_index != qf_index)
2437     {
2438 	win_T	*old_curwin = curwin;
2439 
2440 	curwin = win;
2441 	curbuf = win->w_buffer;
2442 	if (qf_index > old_qf_index)
2443 	{
2444 	    curwin->w_redraw_top = old_qf_index;
2445 	    curwin->w_redraw_bot = qf_index;
2446 	}
2447 	else
2448 	{
2449 	    curwin->w_redraw_top = qf_index;
2450 	    curwin->w_redraw_bot = old_qf_index;
2451 	}
2452 	curwin->w_cursor.lnum = qf_index;
2453 	curwin->w_cursor.col = 0;
2454 	update_topline();		/* scroll to show the line */
2455 	redraw_later(VALID);
2456 	curwin->w_redr_status = TRUE;	/* update ruler */
2457 	curwin = old_curwin;
2458 	curbuf = curwin->w_buffer;
2459     }
2460     return win != NULL;
2461 }
2462 
2463 /*
2464  * Check whether the given window is displaying the specified quickfix/location
2465  * list buffer
2466  */
2467     static int
2468 is_qf_win(win, qi)
2469     win_T	*win;
2470     qf_info_T	*qi;
2471 {
2472     /*
2473      * A window displaying the quickfix buffer will have the w_llist_ref field
2474      * set to NULL.
2475      * A window displaying a location list buffer will have the w_llist_ref
2476      * pointing to the location list.
2477      */
2478     if (bt_quickfix(win->w_buffer))
2479 	if ((qi == &ql_info && win->w_llist_ref == NULL)
2480 		|| (qi != &ql_info && win->w_llist_ref == qi))
2481 	    return TRUE;
2482 
2483     return FALSE;
2484 }
2485 
2486 /*
2487  * Find a window displaying the quickfix/location list 'qi'
2488  * Searches in only the windows opened in the current tab.
2489  */
2490     static win_T *
2491 qf_find_win(qi)
2492     qf_info_T	*qi;
2493 {
2494     win_T	*win;
2495 
2496     FOR_ALL_WINDOWS(win)
2497 	if (is_qf_win(win, qi))
2498 	    break;
2499 
2500     return win;
2501 }
2502 
2503 /*
2504  * Find a quickfix buffer.
2505  * Searches in windows opened in all the tabs.
2506  */
2507     static buf_T *
2508 qf_find_buf(qi)
2509     qf_info_T	*qi;
2510 {
2511     tabpage_T	*tp;
2512     win_T	*win;
2513 
2514     FOR_ALL_TAB_WINDOWS(tp, win)
2515 	if (is_qf_win(win, qi))
2516 	    return win->w_buffer;
2517 
2518     return NULL;
2519 }
2520 
2521 /*
2522  * Find the quickfix buffer.  If it exists, update the contents.
2523  */
2524     static void
2525 qf_update_buffer(qi)
2526     qf_info_T	*qi;
2527 {
2528     buf_T	*buf;
2529     aco_save_T	aco;
2530 
2531     /* Check if a buffer for the quickfix list exists.  Update it. */
2532     buf = qf_find_buf(qi);
2533     if (buf != NULL)
2534     {
2535 	/* set curwin/curbuf to buf and save a few things */
2536 	aucmd_prepbuf(&aco, buf);
2537 
2538 	qf_fill_buffer(qi);
2539 
2540 	/* restore curwin/curbuf and a few other things */
2541 	aucmd_restbuf(&aco);
2542 
2543 	(void)qf_win_pos_update(qi, 0);
2544     }
2545 }
2546 
2547 /*
2548  * Fill current buffer with quickfix errors, replacing any previous contents.
2549  * curbuf must be the quickfix buffer!
2550  */
2551     static void
2552 qf_fill_buffer(qi)
2553     qf_info_T	*qi;
2554 {
2555     linenr_T	lnum;
2556     qfline_T	*qfp;
2557     buf_T	*errbuf;
2558     int		len;
2559     int		old_KeyTyped = KeyTyped;
2560 
2561     /* delete all existing lines */
2562     while ((curbuf->b_ml.ml_flags & ML_EMPTY) == 0)
2563 	(void)ml_delete((linenr_T)1, FALSE);
2564 
2565     /* Check if there is anything to display */
2566     if (qi->qf_curlist < qi->qf_listcount)
2567     {
2568 	/* Add one line for each error */
2569 	qfp = qi->qf_lists[qi->qf_curlist].qf_start;
2570 	for (lnum = 0; lnum < qi->qf_lists[qi->qf_curlist].qf_count; ++lnum)
2571 	{
2572 	    if (qfp->qf_fnum != 0
2573 		    && (errbuf = buflist_findnr(qfp->qf_fnum)) != NULL
2574 		    && errbuf->b_fname != NULL)
2575 	    {
2576 		if (qfp->qf_type == 1)	/* :helpgrep */
2577 		    STRCPY(IObuff, gettail(errbuf->b_fname));
2578 		else
2579 		    STRCPY(IObuff, errbuf->b_fname);
2580 		len = (int)STRLEN(IObuff);
2581 	    }
2582 	    else
2583 		len = 0;
2584 	    IObuff[len++] = '|';
2585 
2586 	    if (qfp->qf_lnum > 0)
2587 	    {
2588 		sprintf((char *)IObuff + len, "%ld", qfp->qf_lnum);
2589 		len += (int)STRLEN(IObuff + len);
2590 
2591 		if (qfp->qf_col > 0)
2592 		{
2593 		    sprintf((char *)IObuff + len, " col %d", qfp->qf_col);
2594 		    len += (int)STRLEN(IObuff + len);
2595 		}
2596 
2597 		sprintf((char *)IObuff + len, "%s",
2598 				  (char *)qf_types(qfp->qf_type, qfp->qf_nr));
2599 		len += (int)STRLEN(IObuff + len);
2600 	    }
2601 	    else if (qfp->qf_pattern != NULL)
2602 	    {
2603 		qf_fmt_text(qfp->qf_pattern, IObuff + len, IOSIZE - len);
2604 		len += (int)STRLEN(IObuff + len);
2605 	    }
2606 	    IObuff[len++] = '|';
2607 	    IObuff[len++] = ' ';
2608 
2609 	    /* Remove newlines and leading whitespace from the text.
2610 	     * For an unrecognized line keep the indent, the compiler may
2611 	     * mark a word with ^^^^. */
2612 	    qf_fmt_text(len > 3 ? skipwhite(qfp->qf_text) : qfp->qf_text,
2613 						  IObuff + len, IOSIZE - len);
2614 
2615 	    if (ml_append(lnum, IObuff, (colnr_T)STRLEN(IObuff) + 1, FALSE)
2616 								      == FAIL)
2617 		break;
2618 	    qfp = qfp->qf_next;
2619 	}
2620 	/* Delete the empty line which is now at the end */
2621 	(void)ml_delete(lnum + 1, FALSE);
2622     }
2623 
2624     /* correct cursor position */
2625     check_lnums(TRUE);
2626 
2627     /* Set the 'filetype' to "qf" each time after filling the buffer.  This
2628      * resembles reading a file into a buffer, it's more logical when using
2629      * autocommands. */
2630     set_option_value((char_u *)"ft", 0L, (char_u *)"qf", OPT_LOCAL);
2631     curbuf->b_p_ma = FALSE;
2632 
2633 #ifdef FEAT_AUTOCMD
2634     keep_filetype = TRUE;		/* don't detect 'filetype' */
2635     apply_autocmds(EVENT_BUFREADPOST, (char_u *)"quickfix", NULL,
2636 							       FALSE, curbuf);
2637     apply_autocmds(EVENT_BUFWINENTER, (char_u *)"quickfix", NULL,
2638 							       FALSE, curbuf);
2639     keep_filetype = FALSE;
2640 #endif
2641 
2642     /* make sure it will be redrawn */
2643     redraw_curbuf_later(NOT_VALID);
2644 
2645     /* Restore KeyTyped, setting 'filetype' may reset it. */
2646     KeyTyped = old_KeyTyped;
2647 }
2648 
2649 #endif /* FEAT_WINDOWS */
2650 
2651 /*
2652  * Return TRUE if "buf" is the quickfix buffer.
2653  */
2654     int
2655 bt_quickfix(buf)
2656     buf_T	*buf;
2657 {
2658     return (buf->b_p_bt[0] == 'q');
2659 }
2660 
2661 /*
2662  * Return TRUE if "buf" is a "nofile" or "acwrite" buffer.
2663  * This means the buffer name is not a file name.
2664  */
2665     int
2666 bt_nofile(buf)
2667     buf_T	*buf;
2668 {
2669     return (buf->b_p_bt[0] == 'n' && buf->b_p_bt[2] == 'f')
2670 	    || buf->b_p_bt[0] == 'a';
2671 }
2672 
2673 /*
2674  * Return TRUE if "buf" is a "nowrite" or "nofile" buffer.
2675  */
2676     int
2677 bt_dontwrite(buf)
2678     buf_T	*buf;
2679 {
2680     return (buf->b_p_bt[0] == 'n');
2681 }
2682 
2683     int
2684 bt_dontwrite_msg(buf)
2685     buf_T	*buf;
2686 {
2687     if (bt_dontwrite(buf))
2688     {
2689 	EMSG(_("E382: Cannot write, 'buftype' option is set"));
2690 	return TRUE;
2691     }
2692     return FALSE;
2693 }
2694 
2695 /*
2696  * Return TRUE if the buffer should be hidden, according to 'hidden', ":hide"
2697  * and 'bufhidden'.
2698  */
2699     int
2700 buf_hide(buf)
2701     buf_T	*buf;
2702 {
2703     /* 'bufhidden' overrules 'hidden' and ":hide", check it first */
2704     switch (buf->b_p_bh[0])
2705     {
2706 	case 'u':		    /* "unload" */
2707 	case 'w':		    /* "wipe" */
2708 	case 'd': return FALSE;	    /* "delete" */
2709 	case 'h': return TRUE;	    /* "hide" */
2710     }
2711     return (p_hid || cmdmod.hide);
2712 }
2713 
2714 /*
2715  * Return TRUE when using ":vimgrep" for ":grep".
2716  */
2717     int
2718 grep_internal(cmdidx)
2719     cmdidx_T	cmdidx;
2720 {
2721     return ((cmdidx == CMD_grep
2722 		|| cmdidx == CMD_lgrep
2723 		|| cmdidx == CMD_grepadd
2724 		|| cmdidx == CMD_lgrepadd)
2725 	    && STRCMP("internal",
2726 			*curbuf->b_p_gp == NUL ? p_gp : curbuf->b_p_gp) == 0);
2727 }
2728 
2729 /*
2730  * Used for ":make", ":lmake", ":grep", ":lgrep", ":grepadd", and ":lgrepadd"
2731  */
2732     void
2733 ex_make(eap)
2734     exarg_T	*eap;
2735 {
2736     char_u	*fname;
2737     char_u	*cmd;
2738     unsigned	len;
2739     win_T	*wp = NULL;
2740     qf_info_T	*qi = &ql_info;
2741     int		res;
2742 #ifdef FEAT_AUTOCMD
2743     char_u	*au_name = NULL;
2744 
2745     /* Redirect ":grep" to ":vimgrep" if 'grepprg' is "internal". */
2746     if (grep_internal(eap->cmdidx))
2747     {
2748 	ex_vimgrep(eap);
2749 	return;
2750     }
2751 
2752     switch (eap->cmdidx)
2753     {
2754 	case CMD_make:	    au_name = (char_u *)"make"; break;
2755 	case CMD_lmake:	    au_name = (char_u *)"lmake"; break;
2756 	case CMD_grep:	    au_name = (char_u *)"grep"; break;
2757 	case CMD_lgrep:	    au_name = (char_u *)"lgrep"; break;
2758 	case CMD_grepadd:   au_name = (char_u *)"grepadd"; break;
2759 	case CMD_lgrepadd:  au_name = (char_u *)"lgrepadd"; break;
2760 	default: break;
2761     }
2762     if (au_name != NULL)
2763     {
2764 	apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
2765 					       curbuf->b_fname, TRUE, curbuf);
2766 # ifdef FEAT_EVAL
2767 	if (did_throw || force_abort)
2768 	    return;
2769 # endif
2770     }
2771 #endif
2772 
2773     if (eap->cmdidx == CMD_lmake || eap->cmdidx == CMD_lgrep
2774 	|| eap->cmdidx == CMD_lgrepadd)
2775 	wp = curwin;
2776 
2777     autowrite_all();
2778     fname = get_mef_name();
2779     if (fname == NULL)
2780 	return;
2781     mch_remove(fname);	    /* in case it's not unique */
2782 
2783     /*
2784      * If 'shellpipe' empty: don't redirect to 'errorfile'.
2785      */
2786     len = (unsigned)STRLEN(p_shq) * 2 + (unsigned)STRLEN(eap->arg) + 1;
2787     if (*p_sp != NUL)
2788 	len += (unsigned)STRLEN(p_sp) + (unsigned)STRLEN(fname) + 3;
2789     cmd = alloc(len);
2790     if (cmd == NULL)
2791 	return;
2792     sprintf((char *)cmd, "%s%s%s", (char *)p_shq, (char *)eap->arg,
2793 							       (char *)p_shq);
2794     if (*p_sp != NUL)
2795 	append_redir(cmd, len, p_sp, fname);
2796     /*
2797      * Output a newline if there's something else than the :make command that
2798      * was typed (in which case the cursor is in column 0).
2799      */
2800     if (msg_col == 0)
2801 	msg_didout = FALSE;
2802     msg_start();
2803     MSG_PUTS(":!");
2804     msg_outtrans(cmd);		/* show what we are doing */
2805 
2806     /* let the shell know if we are redirecting output or not */
2807     do_shell(cmd, *p_sp != NUL ? SHELL_DOOUT : 0);
2808 
2809 #ifdef AMIGA
2810     out_flush();
2811 		/* read window status report and redraw before message */
2812     (void)char_avail();
2813 #endif
2814 
2815     res = qf_init(wp, fname, (eap->cmdidx != CMD_make
2816 			    && eap->cmdidx != CMD_lmake) ? p_gefm : p_efm,
2817 					   (eap->cmdidx != CMD_grepadd
2818 					    && eap->cmdidx != CMD_lgrepadd),
2819 					   *eap->cmdlinep);
2820     if (wp != NULL)
2821 	qi = GET_LOC_LIST(wp);
2822 #ifdef FEAT_AUTOCMD
2823     if (au_name != NULL)
2824     {
2825 	apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
2826 					       curbuf->b_fname, TRUE, curbuf);
2827 	if (qi->qf_curlist < qi->qf_listcount)
2828 	    res = qi->qf_lists[qi->qf_curlist].qf_count;
2829 	else
2830 	    res = 0;
2831     }
2832 #endif
2833     if (res > 0 && !eap->forceit)
2834 	qf_jump(qi, 0, 0, FALSE);		/* display first error */
2835 
2836     mch_remove(fname);
2837     vim_free(fname);
2838     vim_free(cmd);
2839 }
2840 
2841 /*
2842  * Return the name for the errorfile, in allocated memory.
2843  * Find a new unique name when 'makeef' contains "##".
2844  * Returns NULL for error.
2845  */
2846     static char_u *
2847 get_mef_name()
2848 {
2849     char_u	*p;
2850     char_u	*name;
2851     static int	start = -1;
2852     static int	off = 0;
2853 #ifdef HAVE_LSTAT
2854     struct stat	sb;
2855 #endif
2856 
2857     if (*p_mef == NUL)
2858     {
2859 	name = vim_tempname('e');
2860 	if (name == NULL)
2861 	    EMSG(_(e_notmp));
2862 	return name;
2863     }
2864 
2865     for (p = p_mef; *p; ++p)
2866 	if (p[0] == '#' && p[1] == '#')
2867 	    break;
2868 
2869     if (*p == NUL)
2870 	return vim_strsave(p_mef);
2871 
2872     /* Keep trying until the name doesn't exist yet. */
2873     for (;;)
2874     {
2875 	if (start == -1)
2876 	    start = mch_get_pid();
2877 	else
2878 	    off += 19;
2879 
2880 	name = alloc((unsigned)STRLEN(p_mef) + 30);
2881 	if (name == NULL)
2882 	    break;
2883 	STRCPY(name, p_mef);
2884 	sprintf((char *)name + (p - p_mef), "%d%d", start, off);
2885 	STRCAT(name, p + 2);
2886 	if (mch_getperm(name) < 0
2887 #ifdef HAVE_LSTAT
2888 		    /* Don't accept a symbolic link, its a security risk. */
2889 		    && mch_lstat((char *)name, &sb) < 0
2890 #endif
2891 		)
2892 	    break;
2893 	vim_free(name);
2894     }
2895     return name;
2896 }
2897 
2898 /*
2899  * ":cc", ":crewind", ":cfirst" and ":clast".
2900  * ":ll", ":lrewind", ":lfirst" and ":llast".
2901  */
2902     void
2903 ex_cc(eap)
2904     exarg_T	*eap;
2905 {
2906     qf_info_T	*qi = &ql_info;
2907 
2908     if (eap->cmdidx == CMD_ll
2909 	    || eap->cmdidx == CMD_lrewind
2910 	    || eap->cmdidx == CMD_lfirst
2911 	    || eap->cmdidx == CMD_llast)
2912     {
2913 	qi = GET_LOC_LIST(curwin);
2914 	if (qi == NULL)
2915 	{
2916 	    EMSG(_(e_loclist));
2917 	    return;
2918 	}
2919     }
2920 
2921     qf_jump(qi, 0,
2922 	    eap->addr_count > 0
2923 	    ? (int)eap->line2
2924 	    : (eap->cmdidx == CMD_cc || eap->cmdidx == CMD_ll)
2925 		? 0
2926 		: (eap->cmdidx == CMD_crewind || eap->cmdidx == CMD_lrewind
2927 		   || eap->cmdidx == CMD_cfirst || eap->cmdidx == CMD_lfirst)
2928 		    ? 1
2929 		    : 32767,
2930 	    eap->forceit);
2931 }
2932 
2933 /*
2934  * ":cnext", ":cnfile", ":cNext" and ":cprevious".
2935  * ":lnext", ":lNext", ":lprevious", ":lnfile", ":lNfile" and ":lpfile".
2936  */
2937     void
2938 ex_cnext(eap)
2939     exarg_T	*eap;
2940 {
2941     qf_info_T	*qi = &ql_info;
2942 
2943     if (eap->cmdidx == CMD_lnext
2944 	    || eap->cmdidx == CMD_lNext
2945 	    || eap->cmdidx == CMD_lprevious
2946 	    || eap->cmdidx == CMD_lnfile
2947 	    || eap->cmdidx == CMD_lNfile
2948 	    || eap->cmdidx == CMD_lpfile)
2949     {
2950 	qi = GET_LOC_LIST(curwin);
2951 	if (qi == NULL)
2952 	{
2953 	    EMSG(_(e_loclist));
2954 	    return;
2955 	}
2956     }
2957 
2958     qf_jump(qi, (eap->cmdidx == CMD_cnext || eap->cmdidx == CMD_lnext)
2959 	    ? FORWARD
2960 	    : (eap->cmdidx == CMD_cnfile || eap->cmdidx == CMD_lnfile)
2961 		? FORWARD_FILE
2962 		: (eap->cmdidx == CMD_cpfile || eap->cmdidx == CMD_lpfile
2963 		   || eap->cmdidx == CMD_cNfile || eap->cmdidx == CMD_lNfile)
2964 		    ? BACKWARD_FILE
2965 		    : BACKWARD,
2966 	    eap->addr_count > 0 ? (int)eap->line2 : 1, eap->forceit);
2967 }
2968 
2969 /*
2970  * ":cfile"/":cgetfile"/":caddfile" commands.
2971  * ":lfile"/":lgetfile"/":laddfile" commands.
2972  */
2973     void
2974 ex_cfile(eap)
2975     exarg_T	*eap;
2976 {
2977     win_T	*wp = NULL;
2978     qf_info_T	*qi = &ql_info;
2979 
2980     if (eap->cmdidx == CMD_lfile || eap->cmdidx == CMD_lgetfile
2981 	|| eap->cmdidx == CMD_laddfile)
2982 	wp = curwin;
2983 
2984 #ifdef FEAT_BROWSE
2985     if (cmdmod.browse)
2986     {
2987 	char_u *browse_file = do_browse(0, (char_u *)_("Error file"), eap->arg,
2988 				   NULL, NULL, BROWSE_FILTER_ALL_FILES, NULL);
2989 	if (browse_file == NULL)
2990 	    return;
2991 	set_string_option_direct((char_u *)"ef", -1, browse_file, OPT_FREE, 0);
2992 	vim_free(browse_file);
2993     }
2994     else
2995 #endif
2996     if (*eap->arg != NUL)
2997 	set_string_option_direct((char_u *)"ef", -1, eap->arg, OPT_FREE, 0);
2998 
2999     /*
3000      * This function is used by the :cfile, :cgetfile and :caddfile
3001      * commands.
3002      * :cfile always creates a new quickfix list and jumps to the
3003      * first error.
3004      * :cgetfile creates a new quickfix list but doesn't jump to the
3005      * first error.
3006      * :caddfile adds to an existing quickfix list. If there is no
3007      * quickfix list then a new list is created.
3008      */
3009     if (qf_init(wp, p_ef, p_efm, (eap->cmdidx != CMD_caddfile
3010 				  && eap->cmdidx != CMD_laddfile),
3011 							   *eap->cmdlinep) > 0
3012 				  && (eap->cmdidx == CMD_cfile
3013 					     || eap->cmdidx == CMD_lfile))
3014     {
3015 	if (wp != NULL)
3016 	    qi = GET_LOC_LIST(wp);
3017 	qf_jump(qi, 0, 0, eap->forceit);	/* display first error */
3018     }
3019 }
3020 
3021 /*
3022  * ":vimgrep {pattern} file(s)"
3023  * ":vimgrepadd {pattern} file(s)"
3024  * ":lvimgrep {pattern} file(s)"
3025  * ":lvimgrepadd {pattern} file(s)"
3026  */
3027     void
3028 ex_vimgrep(eap)
3029     exarg_T	*eap;
3030 {
3031     regmmatch_T	regmatch;
3032     int		fcount;
3033     char_u	**fnames;
3034     char_u	*fname;
3035     char_u	*s;
3036     char_u	*p;
3037     int		fi;
3038     qf_info_T	*qi = &ql_info;
3039     qfline_T	*prevp = NULL;
3040     long	lnum;
3041     buf_T	*buf;
3042     int		duplicate_name = FALSE;
3043     int		using_dummy;
3044     int		redraw_for_dummy = FALSE;
3045     int		found_match;
3046     buf_T	*first_match_buf = NULL;
3047     time_t	seconds = 0;
3048     int		save_mls;
3049 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
3050     char_u	*save_ei = NULL;
3051 #endif
3052     aco_save_T	aco;
3053     int		flags = 0;
3054     colnr_T	col;
3055     long	tomatch;
3056     char_u	*dirname_start = NULL;
3057     char_u	*dirname_now = NULL;
3058     char_u	*target_dir = NULL;
3059 #ifdef FEAT_AUTOCMD
3060     char_u	*au_name =  NULL;
3061 
3062     switch (eap->cmdidx)
3063     {
3064 	case CMD_vimgrep:     au_name = (char_u *)"vimgrep"; break;
3065 	case CMD_lvimgrep:    au_name = (char_u *)"lvimgrep"; break;
3066 	case CMD_vimgrepadd:  au_name = (char_u *)"vimgrepadd"; break;
3067 	case CMD_lvimgrepadd: au_name = (char_u *)"lvimgrepadd"; break;
3068 	case CMD_grep:	      au_name = (char_u *)"grep"; break;
3069 	case CMD_lgrep:	      au_name = (char_u *)"lgrep"; break;
3070 	case CMD_grepadd:     au_name = (char_u *)"grepadd"; break;
3071 	case CMD_lgrepadd:    au_name = (char_u *)"lgrepadd"; break;
3072 	default: break;
3073     }
3074     if (au_name != NULL)
3075     {
3076 	apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
3077 					       curbuf->b_fname, TRUE, curbuf);
3078 	if (did_throw || force_abort)
3079 	    return;
3080     }
3081 #endif
3082 
3083     if (eap->cmdidx == CMD_lgrep
3084 	    || eap->cmdidx == CMD_lvimgrep
3085 	    || eap->cmdidx == CMD_lgrepadd
3086 	    || eap->cmdidx == CMD_lvimgrepadd)
3087     {
3088 	qi = ll_get_or_alloc_list(curwin);
3089 	if (qi == NULL)
3090 	    return;
3091     }
3092 
3093     if (eap->addr_count > 0)
3094 	tomatch = eap->line2;
3095     else
3096 	tomatch = MAXLNUM;
3097 
3098     /* Get the search pattern: either white-separated or enclosed in // */
3099     regmatch.regprog = NULL;
3100     p = skip_vimgrep_pat(eap->arg, &s, &flags);
3101     if (p == NULL)
3102     {
3103 	EMSG(_(e_invalpat));
3104 	goto theend;
3105     }
3106     regmatch.regprog = vim_regcomp(s, RE_MAGIC);
3107     if (regmatch.regprog == NULL)
3108 	goto theend;
3109     regmatch.rmm_ic = p_ic;
3110     regmatch.rmm_maxcol = 0;
3111 
3112     p = skipwhite(p);
3113     if (*p == NUL)
3114     {
3115 	EMSG(_("E683: File name missing or invalid pattern"));
3116 	goto theend;
3117     }
3118 
3119     if ((eap->cmdidx != CMD_grepadd && eap->cmdidx != CMD_lgrepadd &&
3120 	 eap->cmdidx != CMD_vimgrepadd && eap->cmdidx != CMD_lvimgrepadd)
3121 					|| qi->qf_curlist == qi->qf_listcount)
3122 	/* make place for a new list */
3123 	qf_new_list(qi, *eap->cmdlinep);
3124     else if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
3125 	/* Adding to existing list, find last entry. */
3126 	for (prevp = qi->qf_lists[qi->qf_curlist].qf_start;
3127 			    prevp->qf_next != prevp; prevp = prevp->qf_next)
3128 	    ;
3129 
3130     /* parse the list of arguments */
3131     if (get_arglist_exp(p, &fcount, &fnames) == FAIL)
3132 	goto theend;
3133     if (fcount == 0)
3134     {
3135 	EMSG(_(e_nomatch));
3136 	goto theend;
3137     }
3138 
3139     dirname_start = alloc(MAXPATHL);
3140     dirname_now = alloc(MAXPATHL);
3141     if (dirname_start == NULL || dirname_now == NULL)
3142 	goto theend;
3143 
3144     /* Remember the current directory, because a BufRead autocommand that does
3145      * ":lcd %:p:h" changes the meaning of short path names. */
3146     mch_dirname(dirname_start, MAXPATHL);
3147 
3148     seconds = (time_t)0;
3149     for (fi = 0; fi < fcount && !got_int && tomatch > 0; ++fi)
3150     {
3151 	fname = shorten_fname1(fnames[fi]);
3152 	if (time(NULL) > seconds)
3153 	{
3154 	    /* Display the file name every second or so, show the user we are
3155 	     * working on it. */
3156 	    seconds = time(NULL);
3157 	    msg_start();
3158 	    p = msg_strtrunc(fname, TRUE);
3159 	    if (p == NULL)
3160 		msg_outtrans(fname);
3161 	    else
3162 	    {
3163 		msg_outtrans(p);
3164 		vim_free(p);
3165 	    }
3166 	    msg_clr_eos();
3167 	    msg_didout = FALSE;	    /* overwrite this message */
3168 	    msg_nowait = TRUE;	    /* don't wait for this message */
3169 	    msg_col = 0;
3170 	    out_flush();
3171 	}
3172 
3173 	buf = buflist_findname_exp(fnames[fi]);
3174 	if (buf == NULL || buf->b_ml.ml_mfp == NULL)
3175 	{
3176 	    /* Remember that a buffer with this name already exists. */
3177 	    duplicate_name = (buf != NULL);
3178 	    using_dummy = TRUE;
3179 	    redraw_for_dummy = TRUE;
3180 
3181 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
3182 	    /* Don't do Filetype autocommands to avoid loading syntax and
3183 	     * indent scripts, a great speed improvement. */
3184 	    save_ei = au_event_disable(",Filetype");
3185 #endif
3186 	    /* Don't use modelines here, it's useless. */
3187 	    save_mls = p_mls;
3188 	    p_mls = 0;
3189 
3190 	    /* Load file into a buffer, so that 'fileencoding' is detected,
3191 	     * autocommands applied, etc. */
3192 	    buf = load_dummy_buffer(fname);
3193 
3194 	    /* When autocommands changed directory: go back.  We assume it was
3195 	     * ":lcd %:p:h". */
3196 	    mch_dirname(dirname_now, MAXPATHL);
3197 	    if (STRCMP(dirname_start, dirname_now) != 0)
3198 	    {
3199 		exarg_T ea;
3200 
3201 		ea.arg = dirname_start;
3202 		ea.cmdidx = CMD_lcd;
3203 		ex_cd(&ea);
3204 	    }
3205 
3206 	    p_mls = save_mls;
3207 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
3208 	    au_event_restore(save_ei);
3209 #endif
3210 	}
3211 	else
3212 	    /* Use existing, loaded buffer. */
3213 	    using_dummy = FALSE;
3214 
3215 	if (buf == NULL)
3216 	{
3217 	    if (!got_int)
3218 		smsg((char_u *)_("Cannot open file \"%s\""), fname);
3219 	}
3220 	else
3221 	{
3222 	    /* Try for a match in all lines of the buffer.
3223 	     * For ":1vimgrep" look for first match only. */
3224 	    found_match = FALSE;
3225 	    for (lnum = 1; lnum <= buf->b_ml.ml_line_count && tomatch > 0;
3226 								       ++lnum)
3227 	    {
3228 		col = 0;
3229 		while (vim_regexec_multi(&regmatch, curwin, buf, lnum,
3230 							       col, NULL) > 0)
3231 		{
3232 		    ;
3233 		    if (qf_add_entry(qi, &prevp,
3234 				NULL,       /* dir */
3235 				fname,
3236 				0,
3237 				ml_get_buf(buf,
3238 				     regmatch.startpos[0].lnum + lnum, FALSE),
3239 				regmatch.startpos[0].lnum + lnum,
3240 				regmatch.startpos[0].col + 1,
3241 				FALSE,      /* vis_col */
3242 				NULL,	    /* search pattern */
3243 				0,	    /* nr */
3244 				0,	    /* type */
3245 				TRUE	    /* valid */
3246 				) == FAIL)
3247 		    {
3248 			got_int = TRUE;
3249 			break;
3250 		    }
3251 		    found_match = TRUE;
3252 		    if (--tomatch == 0)
3253 			break;
3254 		    if ((flags & VGR_GLOBAL) == 0
3255 					       || regmatch.endpos[0].lnum > 0)
3256 			break;
3257 		    col = regmatch.endpos[0].col
3258 					    + (col == regmatch.endpos[0].col);
3259 		    if (col > (colnr_T)STRLEN(ml_get_buf(buf, lnum, FALSE)))
3260 			break;
3261 		}
3262 		line_breakcheck();
3263 		if (got_int)
3264 		    break;
3265 	    }
3266 
3267 	    if (using_dummy)
3268 	    {
3269 		if (found_match && first_match_buf == NULL)
3270 		    first_match_buf = buf;
3271 		if (duplicate_name)
3272 		{
3273 		    /* Never keep a dummy buffer if there is another buffer
3274 		     * with the same name. */
3275 		    wipe_dummy_buffer(buf);
3276 		    buf = NULL;
3277 		}
3278 		else if (!cmdmod.hide
3279 			    || buf->b_p_bh[0] == 'u'	/* "unload" */
3280 			    || buf->b_p_bh[0] == 'w'	/* "wipe" */
3281 			    || buf->b_p_bh[0] == 'd')	/* "delete" */
3282 		{
3283 		    /* When no match was found we don't need to remember the
3284 		     * buffer, wipe it out.  If there was a match and it
3285 		     * wasn't the first one or we won't jump there: only
3286 		     * unload the buffer.
3287 		     * Ignore 'hidden' here, because it may lead to having too
3288 		     * many swap files. */
3289 		    if (!found_match)
3290 		    {
3291 			wipe_dummy_buffer(buf);
3292 			buf = NULL;
3293 		    }
3294 		    else if (buf != first_match_buf || (flags & VGR_NOJUMP))
3295 		    {
3296 			unload_dummy_buffer(buf);
3297 			buf = NULL;
3298 		    }
3299 		}
3300 
3301 		if (buf != NULL)
3302 		{
3303 		    /* If the buffer is still loaded we need to use the
3304 		     * directory we jumped to below. */
3305 		    if (buf == first_match_buf
3306 			    && target_dir == NULL
3307 			    && STRCMP(dirname_start, dirname_now) != 0)
3308 			target_dir = vim_strsave(dirname_now);
3309 
3310 		    /* The buffer is still loaded, the Filetype autocommands
3311 		     * need to be done now, in that buffer.  And the modelines
3312 		     * need to be done (again).  But not the window-local
3313 		     * options! */
3314 		    aucmd_prepbuf(&aco, buf);
3315 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
3316 		    apply_autocmds(EVENT_FILETYPE, buf->b_p_ft,
3317 						     buf->b_fname, TRUE, buf);
3318 #endif
3319 		    do_modelines(OPT_NOWIN);
3320 		    aucmd_restbuf(&aco);
3321 		}
3322 	    }
3323 	}
3324     }
3325 
3326     FreeWild(fcount, fnames);
3327 
3328     qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
3329     qi->qf_lists[qi->qf_curlist].qf_ptr = qi->qf_lists[qi->qf_curlist].qf_start;
3330     qi->qf_lists[qi->qf_curlist].qf_index = 1;
3331 
3332 #ifdef FEAT_WINDOWS
3333     qf_update_buffer(qi);
3334 #endif
3335 
3336 #ifdef FEAT_AUTOCMD
3337     if (au_name != NULL)
3338 	apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
3339 					       curbuf->b_fname, TRUE, curbuf);
3340 #endif
3341 
3342     /* Jump to first match. */
3343     if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
3344     {
3345 	if ((flags & VGR_NOJUMP) == 0)
3346 	{
3347 	    buf = curbuf;
3348 	    qf_jump(qi, 0, 0, eap->forceit);
3349 	    if (buf != curbuf)
3350 		/* If we jumped to another buffer redrawing will already be
3351 		 * taken care of. */
3352 		redraw_for_dummy = FALSE;
3353 
3354 	    /* Jump to the directory used after loading the buffer. */
3355 	    if (curbuf == first_match_buf && target_dir != NULL)
3356 	    {
3357 		exarg_T ea;
3358 
3359 		ea.arg = target_dir;
3360 		ea.cmdidx = CMD_lcd;
3361 		ex_cd(&ea);
3362 	    }
3363 	}
3364     }
3365     else
3366 	EMSG2(_(e_nomatch2), s);
3367 
3368     /* If we loaded a dummy buffer into the current window, the autocommands
3369      * may have messed up things, need to redraw and recompute folds. */
3370     if (redraw_for_dummy)
3371     {
3372 #ifdef FEAT_FOLDING
3373 	foldUpdateAll(curwin);
3374 #else
3375 	redraw_later(NOT_VALID);
3376 #endif
3377     }
3378 
3379 theend:
3380     vim_free(dirname_now);
3381     vim_free(dirname_start);
3382     vim_free(target_dir);
3383     vim_free(regmatch.regprog);
3384 }
3385 
3386 /*
3387  * Skip over the pattern argument of ":vimgrep /pat/[g][j]".
3388  * Put the start of the pattern in "*s", unless "s" is NULL.
3389  * If "flags" is not NULL put the flags in it: VGR_GLOBAL, VGR_NOJUMP.
3390  * If "s" is not NULL terminate the pattern with a NUL.
3391  * Return a pointer to the char just past the pattern plus flags.
3392  */
3393     char_u *
3394 skip_vimgrep_pat(p, s, flags)
3395     char_u  *p;
3396     char_u  **s;
3397     int	    *flags;
3398 {
3399     int		c;
3400 
3401     if (vim_isIDc(*p))
3402     {
3403 	/* ":vimgrep pattern fname" */
3404 	if (s != NULL)
3405 	    *s = p;
3406 	p = skiptowhite(p);
3407 	if (s != NULL && *p != NUL)
3408 	    *p++ = NUL;
3409     }
3410     else
3411     {
3412 	/* ":vimgrep /pattern/[g][j] fname" */
3413 	if (s != NULL)
3414 	    *s = p + 1;
3415 	c = *p;
3416 	p = skip_regexp(p + 1, c, TRUE, NULL);
3417 	if (*p != c)
3418 	    return NULL;
3419 
3420 	/* Truncate the pattern. */
3421 	if (s != NULL)
3422 	    *p = NUL;
3423 	++p;
3424 
3425 	/* Find the flags */
3426 	while (*p == 'g' || *p == 'j')
3427 	{
3428 	    if (flags != NULL)
3429 	    {
3430 		if (*p == 'g')
3431 		    *flags |= VGR_GLOBAL;
3432 		else
3433 		    *flags |= VGR_NOJUMP;
3434 	    }
3435 	    ++p;
3436 	}
3437     }
3438     return p;
3439 }
3440 
3441 /*
3442  * Load file "fname" into a dummy buffer and return the buffer pointer.
3443  * Returns NULL if it fails.
3444  * Must call unload_dummy_buffer() or wipe_dummy_buffer() later!
3445  */
3446     static buf_T *
3447 load_dummy_buffer(fname)
3448     char_u	*fname;
3449 {
3450     buf_T	*newbuf;
3451     buf_T	*newbuf_to_wipe = NULL;
3452     int		failed = TRUE;
3453     aco_save_T	aco;
3454 
3455     /* Allocate a buffer without putting it in the buffer list. */
3456     newbuf = buflist_new(NULL, NULL, (linenr_T)1, BLN_DUMMY);
3457     if (newbuf == NULL)
3458 	return NULL;
3459 
3460     /* Init the options. */
3461     buf_copy_options(newbuf, BCO_ENTER | BCO_NOHELP);
3462 
3463     /* need to open the memfile before putting the buffer in a window */
3464     if (ml_open(newbuf) == OK)
3465     {
3466 	/* set curwin/curbuf to buf and save a few things */
3467 	aucmd_prepbuf(&aco, newbuf);
3468 
3469 	/* Need to set the filename for autocommands. */
3470 	(void)setfname(curbuf, fname, NULL, FALSE);
3471 
3472 	/* Create swap file now to avoid the ATTENTION message. */
3473 	check_need_swap(TRUE);
3474 
3475 	/* Remove the "dummy" flag, otherwise autocommands may not
3476 	 * work. */
3477 	curbuf->b_flags &= ~BF_DUMMY;
3478 
3479 	if (readfile(fname, NULL,
3480 		    (linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM,
3481 		    NULL, READ_NEW | READ_DUMMY) == OK
3482 		&& !got_int
3483 		&& !(curbuf->b_flags & BF_NEW))
3484 	{
3485 	    failed = FALSE;
3486 	    if (curbuf != newbuf)
3487 	    {
3488 		/* Bloody autocommands changed the buffer!  Can happen when
3489 		 * using netrw and editing a remote file.  Use the current
3490 		 * buffer instead, delete the dummy one after restoring the
3491 		 * window stuff. */
3492 		newbuf_to_wipe = newbuf;
3493 		newbuf = curbuf;
3494 	    }
3495 	}
3496 
3497 	/* restore curwin/curbuf and a few other things */
3498 	aucmd_restbuf(&aco);
3499 	if (newbuf_to_wipe != NULL && buf_valid(newbuf_to_wipe))
3500 	    wipe_buffer(newbuf_to_wipe, FALSE);
3501     }
3502 
3503     if (!buf_valid(newbuf))
3504 	return NULL;
3505     if (failed)
3506     {
3507 	wipe_dummy_buffer(newbuf);
3508 	return NULL;
3509     }
3510     return newbuf;
3511 }
3512 
3513 /*
3514  * Wipe out the dummy buffer that load_dummy_buffer() created.
3515  */
3516     static void
3517 wipe_dummy_buffer(buf)
3518     buf_T	*buf;
3519 {
3520     if (curbuf != buf)		/* safety check */
3521     {
3522 #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
3523 	cleanup_T   cs;
3524 
3525 	/* Reset the error/interrupt/exception state here so that aborting()
3526 	 * returns FALSE when wiping out the buffer.  Otherwise it doesn't
3527 	 * work when got_int is set. */
3528 	enter_cleanup(&cs);
3529 #endif
3530 
3531 	wipe_buffer(buf, FALSE);
3532 
3533 #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
3534 	/* Restore the error/interrupt/exception state if not discarded by a
3535 	 * new aborting error, interrupt, or uncaught exception. */
3536 	leave_cleanup(&cs);
3537 #endif
3538     }
3539 }
3540 
3541 /*
3542  * Unload the dummy buffer that load_dummy_buffer() created.
3543  */
3544     static void
3545 unload_dummy_buffer(buf)
3546     buf_T	*buf;
3547 {
3548     if (curbuf != buf)		/* safety check */
3549 	close_buffer(NULL, buf, DOBUF_UNLOAD);
3550 }
3551 
3552 #if defined(FEAT_EVAL) || defined(PROTO)
3553 /*
3554  * Add each quickfix error to list "list" as a dictionary.
3555  */
3556     int
3557 get_errorlist(wp, list)
3558     win_T	*wp;
3559     list_T	*list;
3560 {
3561     qf_info_T	*qi = &ql_info;
3562     dict_T	*dict;
3563     char_u	buf[2];
3564     qfline_T	*qfp;
3565     int		i;
3566     int		bufnum;
3567 
3568     if (wp != NULL)
3569     {
3570 	qi = GET_LOC_LIST(wp);
3571 	if (qi == NULL)
3572 	    return FAIL;
3573     }
3574 
3575     if (qi->qf_curlist >= qi->qf_listcount
3576 	    || qi->qf_lists[qi->qf_curlist].qf_count == 0)
3577 	return FAIL;
3578 
3579     qfp = qi->qf_lists[qi->qf_curlist].qf_start;
3580     for (i = 1; !got_int && i <= qi->qf_lists[qi->qf_curlist].qf_count; ++i)
3581     {
3582 	/* Handle entries with a non-existing buffer number. */
3583 	bufnum = qfp->qf_fnum;
3584 	if (bufnum != 0 && (buflist_findnr(bufnum) == NULL))
3585 	    bufnum = 0;
3586 
3587 	if ((dict = dict_alloc()) == NULL)
3588 	    return FAIL;
3589 	if (list_append_dict(list, dict) == FAIL)
3590 	    return FAIL;
3591 
3592 	buf[0] = qfp->qf_type;
3593 	buf[1] = NUL;
3594 	if ( dict_add_nr_str(dict, "bufnr", (long)bufnum, NULL) == FAIL
3595 	  || dict_add_nr_str(dict, "lnum",  (long)qfp->qf_lnum, NULL) == FAIL
3596 	  || dict_add_nr_str(dict, "col",   (long)qfp->qf_col, NULL) == FAIL
3597 	  || dict_add_nr_str(dict, "vcol",  (long)qfp->qf_viscol, NULL) == FAIL
3598 	  || dict_add_nr_str(dict, "nr",    (long)qfp->qf_nr, NULL) == FAIL
3599 	  || dict_add_nr_str(dict, "pattern",  0L,
3600 	     qfp->qf_pattern == NULL ? (char_u *)"" : qfp->qf_pattern) == FAIL
3601 	  || dict_add_nr_str(dict, "text",  0L,
3602 		   qfp->qf_text == NULL ? (char_u *)"" : qfp->qf_text) == FAIL
3603 	  || dict_add_nr_str(dict, "type",  0L, buf) == FAIL
3604 	  || dict_add_nr_str(dict, "valid", (long)qfp->qf_valid, NULL) == FAIL)
3605 	    return FAIL;
3606 
3607 	qfp = qfp->qf_next;
3608     }
3609     return OK;
3610 }
3611 
3612 /*
3613  * Populate the quickfix list with the items supplied in the list
3614  * of dictionaries. "title" will be copied to w:quickfix_title
3615  */
3616     int
3617 set_errorlist(wp, list, action, title)
3618     win_T	*wp;
3619     list_T	*list;
3620     int		action;
3621     char_u	*title;
3622 {
3623     listitem_T	*li;
3624     dict_T	*d;
3625     char_u	*filename, *pattern, *text, *type;
3626     int		bufnum;
3627     long	lnum;
3628     int		col, nr;
3629     int		vcol;
3630     qfline_T	*prevp = NULL;
3631     int		valid, status;
3632     int		retval = OK;
3633     qf_info_T	*qi = &ql_info;
3634     int		did_bufnr_emsg = FALSE;
3635 
3636     if (wp != NULL)
3637     {
3638 	qi = ll_get_or_alloc_list(wp);
3639 	if (qi == NULL)
3640 	    return FAIL;
3641     }
3642 
3643     if (action == ' ' || qi->qf_curlist == qi->qf_listcount)
3644 	/* make place for a new list */
3645 	qf_new_list(qi, title);
3646     else if (action == 'a' && qi->qf_lists[qi->qf_curlist].qf_count > 0)
3647 	/* Adding to existing list, find last entry. */
3648 	for (prevp = qi->qf_lists[qi->qf_curlist].qf_start;
3649 	     prevp->qf_next != prevp; prevp = prevp->qf_next)
3650 	    ;
3651     else if (action == 'r')
3652 	qf_free(qi, qi->qf_curlist);
3653 
3654     for (li = list->lv_first; li != NULL; li = li->li_next)
3655     {
3656 	if (li->li_tv.v_type != VAR_DICT)
3657 	    continue; /* Skip non-dict items */
3658 
3659 	d = li->li_tv.vval.v_dict;
3660 	if (d == NULL)
3661 	    continue;
3662 
3663 	filename = get_dict_string(d, (char_u *)"filename", TRUE);
3664 	bufnum = get_dict_number(d, (char_u *)"bufnr");
3665 	lnum = get_dict_number(d, (char_u *)"lnum");
3666 	col = get_dict_number(d, (char_u *)"col");
3667 	vcol = get_dict_number(d, (char_u *)"vcol");
3668 	nr = get_dict_number(d, (char_u *)"nr");
3669 	type = get_dict_string(d, (char_u *)"type", TRUE);
3670 	pattern = get_dict_string(d, (char_u *)"pattern", TRUE);
3671 	text = get_dict_string(d, (char_u *)"text", TRUE);
3672 	if (text == NULL)
3673 	    text = vim_strsave((char_u *)"");
3674 
3675 	valid = TRUE;
3676 	if ((filename == NULL && bufnum == 0) || (lnum == 0 && pattern == NULL))
3677 	    valid = FALSE;
3678 
3679 	/* Mark entries with non-existing buffer number as not valid. Give the
3680 	 * error message only once. */
3681 	if (bufnum != 0 && (buflist_findnr(bufnum) == NULL))
3682 	{
3683 	    if (!did_bufnr_emsg)
3684 	    {
3685 		did_bufnr_emsg = TRUE;
3686 		EMSGN(_("E92: Buffer %ld not found"), bufnum);
3687 	    }
3688 	    valid = FALSE;
3689 	    bufnum = 0;
3690 	}
3691 
3692 	status =  qf_add_entry(qi, &prevp,
3693 			       NULL,	    /* dir */
3694 			       filename,
3695 			       bufnum,
3696 			       text,
3697 			       lnum,
3698 			       col,
3699 			       vcol,	    /* vis_col */
3700 			       pattern,	    /* search pattern */
3701 			       nr,
3702 			       type == NULL ? NUL : *type,
3703 			       valid);
3704 
3705 	vim_free(filename);
3706 	vim_free(pattern);
3707 	vim_free(text);
3708 	vim_free(type);
3709 
3710 	if (status == FAIL)
3711 	{
3712 	    retval = FAIL;
3713 	    break;
3714 	}
3715     }
3716 
3717     if (qi->qf_lists[qi->qf_curlist].qf_index == 0)
3718 	/* no valid entry */
3719 	qi->qf_lists[qi->qf_curlist].qf_nonevalid = TRUE;
3720     else
3721 	qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
3722     qi->qf_lists[qi->qf_curlist].qf_ptr = qi->qf_lists[qi->qf_curlist].qf_start;
3723     qi->qf_lists[qi->qf_curlist].qf_index = 1;
3724 
3725 #ifdef FEAT_WINDOWS
3726     qf_update_buffer(qi);
3727 #endif
3728 
3729     return retval;
3730 }
3731 #endif
3732 
3733 /*
3734  * ":[range]cbuffer [bufnr]" command.
3735  * ":[range]caddbuffer [bufnr]" command.
3736  * ":[range]cgetbuffer [bufnr]" command.
3737  * ":[range]lbuffer [bufnr]" command.
3738  * ":[range]laddbuffer [bufnr]" command.
3739  * ":[range]lgetbuffer [bufnr]" command.
3740  */
3741     void
3742 ex_cbuffer(eap)
3743     exarg_T   *eap;
3744 {
3745     buf_T	*buf = NULL;
3746     qf_info_T	*qi = &ql_info;
3747 
3748     if (eap->cmdidx == CMD_lbuffer || eap->cmdidx == CMD_lgetbuffer
3749 	    || eap->cmdidx == CMD_laddbuffer)
3750     {
3751 	qi = ll_get_or_alloc_list(curwin);
3752 	if (qi == NULL)
3753 	    return;
3754     }
3755 
3756     if (*eap->arg == NUL)
3757 	buf = curbuf;
3758     else if (*skipwhite(skipdigits(eap->arg)) == NUL)
3759 	buf = buflist_findnr(atoi((char *)eap->arg));
3760     if (buf == NULL)
3761 	EMSG(_(e_invarg));
3762     else if (buf->b_ml.ml_mfp == NULL)
3763 	EMSG(_("E681: Buffer is not loaded"));
3764     else
3765     {
3766 	if (eap->addr_count == 0)
3767 	{
3768 	    eap->line1 = 1;
3769 	    eap->line2 = buf->b_ml.ml_line_count;
3770 	}
3771 	if (eap->line1 < 1 || eap->line1 > buf->b_ml.ml_line_count
3772 		|| eap->line2 < 1 || eap->line2 > buf->b_ml.ml_line_count)
3773 	    EMSG(_(e_invrange));
3774 	else
3775 	{
3776 	    char_u *qf_title = *eap->cmdlinep;
3777 
3778 	    if (buf->b_sfname)
3779 	    {
3780 		vim_snprintf((char *)IObuff, IOSIZE, "%s (%s)",
3781 				     (char *)qf_title, (char *)buf->b_sfname);
3782 		qf_title = IObuff;
3783 	    }
3784 
3785 	    if (qf_init_ext(qi, NULL, buf, NULL, p_efm,
3786 			    (eap->cmdidx != CMD_caddbuffer
3787 			     && eap->cmdidx != CMD_laddbuffer),
3788 						   eap->line1, eap->line2,
3789 						   qf_title) > 0
3790 		    && (eap->cmdidx == CMD_cbuffer
3791 			|| eap->cmdidx == CMD_lbuffer))
3792 		qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
3793 	}
3794     }
3795 }
3796 
3797 #if defined(FEAT_EVAL) || defined(PROTO)
3798 /*
3799  * ":cexpr {expr}", ":cgetexpr {expr}", ":caddexpr {expr}" command.
3800  * ":lexpr {expr}", ":lgetexpr {expr}", ":laddexpr {expr}" command.
3801  */
3802     void
3803 ex_cexpr(eap)
3804     exarg_T	*eap;
3805 {
3806     typval_T	*tv;
3807     qf_info_T	*qi = &ql_info;
3808 
3809     if (eap->cmdidx == CMD_lexpr || eap->cmdidx == CMD_lgetexpr
3810 	    || eap->cmdidx == CMD_laddexpr)
3811     {
3812 	qi = ll_get_or_alloc_list(curwin);
3813 	if (qi == NULL)
3814 	    return;
3815     }
3816 
3817     /* Evaluate the expression.  When the result is a string or a list we can
3818      * use it to fill the errorlist. */
3819     tv = eval_expr(eap->arg, NULL);
3820     if (tv != NULL)
3821     {
3822 	if ((tv->v_type == VAR_STRING && tv->vval.v_string != NULL)
3823 		|| (tv->v_type == VAR_LIST && tv->vval.v_list != NULL))
3824 	{
3825 	    if (qf_init_ext(qi, NULL, NULL, tv, p_efm,
3826 			    (eap->cmdidx != CMD_caddexpr
3827 			     && eap->cmdidx != CMD_laddexpr),
3828 				 (linenr_T)0, (linenr_T)0, *eap->cmdlinep) > 0
3829 		    && (eap->cmdidx == CMD_cexpr
3830 			|| eap->cmdidx == CMD_lexpr))
3831 		qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
3832 	}
3833 	else
3834 	    EMSG(_("E777: String or List expected"));
3835 	free_tv(tv);
3836     }
3837 }
3838 #endif
3839 
3840 /*
3841  * ":helpgrep {pattern}"
3842  */
3843     void
3844 ex_helpgrep(eap)
3845     exarg_T	*eap;
3846 {
3847     regmatch_T	regmatch;
3848     char_u	*save_cpo;
3849     char_u	*p;
3850     int		fcount;
3851     char_u	**fnames;
3852     FILE	*fd;
3853     int		fi;
3854     qfline_T	*prevp = NULL;
3855     long	lnum;
3856 #ifdef FEAT_MULTI_LANG
3857     char_u	*lang;
3858 #endif
3859     qf_info_T	*qi = &ql_info;
3860     int		new_qi = FALSE;
3861     win_T	*wp;
3862 
3863     /* Make 'cpoptions' empty, the 'l' flag should not be used here. */
3864     save_cpo = p_cpo;
3865     p_cpo = empty_option;
3866 
3867 #ifdef FEAT_MULTI_LANG
3868     /* Check for a specified language */
3869     lang = check_help_lang(eap->arg);
3870 #endif
3871 
3872     if (eap->cmdidx == CMD_lhelpgrep)
3873     {
3874 	/* Find an existing help window */
3875 	FOR_ALL_WINDOWS(wp)
3876 	    if (wp->w_buffer != NULL && wp->w_buffer->b_help)
3877 		break;
3878 
3879 	if (wp == NULL)	    /* Help window not found */
3880 	    qi = NULL;
3881 	else
3882 	    qi = wp->w_llist;
3883 
3884 	if (qi == NULL)
3885 	{
3886 	    /* Allocate a new location list for help text matches */
3887 	    if ((qi = ll_new_list()) == NULL)
3888 		return;
3889 	    new_qi = TRUE;
3890 	}
3891     }
3892 
3893     regmatch.regprog = vim_regcomp(eap->arg, RE_MAGIC + RE_STRING);
3894     regmatch.rm_ic = FALSE;
3895     if (regmatch.regprog != NULL)
3896     {
3897 	/* create a new quickfix list */
3898 	qf_new_list(qi, *eap->cmdlinep);
3899 
3900 	/* Go through all directories in 'runtimepath' */
3901 	p = p_rtp;
3902 	while (*p != NUL && !got_int)
3903 	{
3904 	    copy_option_part(&p, NameBuff, MAXPATHL, ",");
3905 
3906 	    /* Find all "*.txt" and "*.??x" files in the "doc" directory. */
3907 	    add_pathsep(NameBuff);
3908 	    STRCAT(NameBuff, "doc/*.\\(txt\\|??x\\)");
3909 	    if (gen_expand_wildcards(1, &NameBuff, &fcount,
3910 					     &fnames, EW_FILE|EW_SILENT) == OK
3911 		    && fcount > 0)
3912 	    {
3913 		for (fi = 0; fi < fcount && !got_int; ++fi)
3914 		{
3915 #ifdef FEAT_MULTI_LANG
3916 		    /* Skip files for a different language. */
3917 		    if (lang != NULL
3918 			    && STRNICMP(lang, fnames[fi]
3919 					    + STRLEN(fnames[fi]) - 3, 2) != 0
3920 			    && !(STRNICMP(lang, "en", 2) == 0
3921 				&& STRNICMP("txt", fnames[fi]
3922 					   + STRLEN(fnames[fi]) - 3, 3) == 0))
3923 			    continue;
3924 #endif
3925 		    fd = mch_fopen((char *)fnames[fi], "r");
3926 		    if (fd != NULL)
3927 		    {
3928 			lnum = 1;
3929 			while (!vim_fgets(IObuff, IOSIZE, fd) && !got_int)
3930 			{
3931 			    if (vim_regexec(&regmatch, IObuff, (colnr_T)0))
3932 			    {
3933 				int	l = (int)STRLEN(IObuff);
3934 
3935 				/* remove trailing CR, LF, spaces, etc. */
3936 				while (l > 0 && IObuff[l - 1] <= ' ')
3937 				     IObuff[--l] = NUL;
3938 
3939 				if (qf_add_entry(qi, &prevp,
3940 					    NULL,	/* dir */
3941 					    fnames[fi],
3942 					    0,
3943 					    IObuff,
3944 					    lnum,
3945 					    (int)(regmatch.startp[0] - IObuff)
3946 								+ 1, /* col */
3947 					    FALSE,	/* vis_col */
3948 					    NULL,	/* search pattern */
3949 					    0,		/* nr */
3950 					    1,		/* type */
3951 					    TRUE	/* valid */
3952 					    ) == FAIL)
3953 				{
3954 				    got_int = TRUE;
3955 				    break;
3956 				}
3957 			    }
3958 			    ++lnum;
3959 			    line_breakcheck();
3960 			}
3961 			fclose(fd);
3962 		    }
3963 		}
3964 		FreeWild(fcount, fnames);
3965 	    }
3966 	}
3967 	vim_free(regmatch.regprog);
3968 
3969 	qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
3970 	qi->qf_lists[qi->qf_curlist].qf_ptr =
3971 	    qi->qf_lists[qi->qf_curlist].qf_start;
3972 	qi->qf_lists[qi->qf_curlist].qf_index = 1;
3973     }
3974 
3975     if (p_cpo == empty_option)
3976 	p_cpo = save_cpo;
3977     else
3978 	/* Darn, some plugin changed the value. */
3979 	free_string_option(save_cpo);
3980 
3981 #ifdef FEAT_WINDOWS
3982     qf_update_buffer(qi);
3983 #endif
3984 
3985     /* Jump to first match. */
3986     if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
3987 	qf_jump(qi, 0, 0, FALSE);
3988     else
3989 	EMSG2(_(e_nomatch2), eap->arg);
3990 
3991     if (eap->cmdidx == CMD_lhelpgrep)
3992     {
3993 	/* If the help window is not opened or if it already points to the
3994 	 * correct location list, then free the new location list. */
3995 	if (!curwin->w_buffer->b_help || curwin->w_llist == qi)
3996 	{
3997 	    if (new_qi)
3998 		ll_free_all(&qi);
3999 	}
4000 	else if (curwin->w_llist == NULL)
4001 	    curwin->w_llist = qi;
4002     }
4003 }
4004 
4005 #endif /* FEAT_QUICKFIX */
4006