xref: /vim-8.2.3635/src/quickfix.c (revision cd5c8f82)
1 /* vi:set ts=8 sts=4 sw=4 noet:
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 /*
25  * For each error the next struct is allocated and linked in a list.
26  */
27 typedef struct qfline_S qfline_T;
28 struct qfline_S
29 {
30     qfline_T	*qf_next;	/* pointer to next error in the list */
31     qfline_T	*qf_prev;	/* pointer to previous error in the list */
32     linenr_T	qf_lnum;	/* line number where the error occurred */
33     int		qf_fnum;	/* file number for the line */
34     int		qf_col;		/* column where the error occurred */
35     int		qf_nr;		/* error number */
36     char_u	*qf_pattern;	/* search pattern for the error */
37     char_u	*qf_text;	/* description of the error */
38     char_u	qf_viscol;	/* set to TRUE if qf_col is screen column */
39     char_u	qf_cleared;	/* set to TRUE if line has been deleted */
40     char_u	qf_type;	/* type of the error (mostly 'E'); 1 for
41 				   :helpgrep */
42     char_u	qf_valid;	/* valid error message detected */
43 };
44 
45 /*
46  * There is a stack of error lists.
47  */
48 #define LISTCOUNT   10
49 
50 typedef struct qf_list_S
51 {
52     qfline_T	*qf_start;	/* pointer to the first error */
53     qfline_T	*qf_last;	/* pointer to the last error */
54     qfline_T	*qf_ptr;	/* pointer to the current error */
55     int		qf_count;	/* number of errors (0 means no error list) */
56     int		qf_index;	/* current index in the error list */
57     int		qf_nonevalid;	/* TRUE if not a single valid entry found */
58     char_u	*qf_title;	/* title derived from the command that created
59 				 * the error list */
60 } qf_list_T;
61 
62 struct qf_info_S
63 {
64     /*
65      * Count of references to this list. Used only for location lists.
66      * When a location list window reference this list, qf_refcount
67      * will be 2. Otherwise, qf_refcount will be 1. When qf_refcount
68      * reaches 0, the list is freed.
69      */
70     int		qf_refcount;
71     int		qf_listcount;	    /* current number of lists */
72     int		qf_curlist;	    /* current error list */
73     qf_list_T	qf_lists[LISTCOUNT];
74 
75     int			  qf_dir_curlist;    /* error list for qf_dir_stack */
76     struct dir_stack_T   *qf_dir_stack;
77     char_u		 *qf_directory;
78     struct dir_stack_T   *qf_file_stack;
79     char_u		 *qf_currfile;
80     int			  qf_multiline;
81     int			  qf_multiignore;
82     int			  qf_multiscan;
83 };
84 
85 static qf_info_T ql_info;	/* global quickfix list */
86 
87 #define FMT_PATTERNS 10		/* maximum number of % recognized */
88 
89 /*
90  * Structure used to hold the info of one part of 'errorformat'
91  */
92 typedef struct efm_S efm_T;
93 struct efm_S
94 {
95     regprog_T	    *prog;	/* pre-formatted part of 'errorformat' */
96     efm_T	    *next;	/* pointer to next (NULL if last) */
97     char_u	    addr[FMT_PATTERNS]; /* indices of used % patterns */
98     char_u	    prefix;	/* prefix of this format line: */
99 				/*   'D' enter directory */
100 				/*   'X' leave directory */
101 				/*   'A' start of multi-line message */
102 				/*   'E' error message */
103 				/*   'W' warning message */
104 				/*   'I' informational message */
105 				/*   'C' continuation line */
106 				/*   'Z' end of multi-line message */
107 				/*   'G' general, unspecific message */
108 				/*   'P' push file (partial) message */
109 				/*   'Q' pop/quit file (partial) message */
110 				/*   'O' overread (partial) message */
111     char_u	    flags;	/* additional flags given in prefix */
112 				/*   '-' do not include this line */
113 				/*   '+' include whole line in message */
114     int		    conthere;	/* %> used */
115 };
116 
117 static efm_T	*fmt_start = NULL; /* cached across qf_parse_line() calls */
118 
119 static int	qf_init_ext(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, char_u *enc);
120 static void	qf_store_title(qf_info_T *qi, char_u *title);
121 static void	qf_new_list(qf_info_T *qi, char_u *qf_title);
122 static void	ll_free_all(qf_info_T **pqi);
123 static int	qf_add_entry(qf_info_T *qi, 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);
124 static qf_info_T *ll_new_list(void);
125 static void	qf_free(qf_info_T *qi, int idx);
126 static char_u	*qf_types(int, int);
127 static int	qf_get_fnum(qf_info_T *qi, char_u *, char_u *);
128 static char_u	*qf_push_dir(char_u *, struct dir_stack_T **, int is_file_stack);
129 static char_u	*qf_pop_dir(struct dir_stack_T **);
130 static char_u	*qf_guess_filepath(qf_info_T *qi, char_u *);
131 static void	qf_fmt_text(char_u *text, char_u *buf, int bufsize);
132 static void	qf_clean_dir_stack(struct dir_stack_T **);
133 #ifdef FEAT_WINDOWS
134 static int	qf_win_pos_update(qf_info_T *qi, int old_qf_index);
135 static int	is_qf_win(win_T *win, qf_info_T *qi);
136 static win_T	*qf_find_win(qf_info_T *qi);
137 static buf_T	*qf_find_buf(qf_info_T *qi);
138 static void	qf_update_buffer(qf_info_T *qi, qfline_T *old_last);
139 static void	qf_set_title_var(qf_info_T *qi);
140 static void	qf_fill_buffer(qf_info_T *qi, buf_T *buf, qfline_T *old_last);
141 #endif
142 static char_u	*get_mef_name(void);
143 static void	restore_start_dir(char_u *dirname_start);
144 static buf_T	*load_dummy_buffer(char_u *fname, char_u *dirname_start, char_u *resulting_dir);
145 static void	wipe_dummy_buffer(buf_T *buf, char_u *dirname_start);
146 static void	unload_dummy_buffer(buf_T *buf, char_u *dirname_start);
147 static qf_info_T *ll_get_or_alloc_list(win_T *);
148 
149 /* Quickfix window check helper macro */
150 #define IS_QF_WINDOW(wp) (bt_quickfix(wp->w_buffer) && wp->w_llist_ref == NULL)
151 /* Location list window check helper macro */
152 #define IS_LL_WINDOW(wp) (bt_quickfix(wp->w_buffer) && wp->w_llist_ref != NULL)
153 /*
154  * Return location list for window 'wp'
155  * For location list window, return the referenced location list
156  */
157 #define GET_LOC_LIST(wp) (IS_LL_WINDOW(wp) ? wp->w_llist_ref : wp->w_llist)
158 
159 /*
160  * Read the errorfile "efile" into memory, line by line, building the error
161  * list. Set the error list's title to qf_title.
162  * Return -1 for error, number of errors for success.
163  */
164     int
165 qf_init(
166     win_T	    *wp,
167     char_u	    *efile,
168     char_u	    *errorformat,
169     int		    newlist,		/* TRUE: start a new error list */
170     char_u	    *qf_title,
171     char_u	    *enc)
172 {
173     qf_info_T	    *qi = &ql_info;
174 
175     if (wp != NULL)
176     {
177 	qi = ll_get_or_alloc_list(wp);
178 	if (qi == NULL)
179 	    return FAIL;
180     }
181 
182     return qf_init_ext(qi, efile, curbuf, NULL, errorformat, newlist,
183 						    (linenr_T)0, (linenr_T)0,
184 						    qf_title, enc);
185 }
186 
187 /*
188  * Maximum number of bytes allowed per line while reading a errorfile.
189  */
190 #define LINE_MAXLEN 4096
191 
192 static struct fmtpattern
193 {
194     char_u	convchar;
195     char	*pattern;
196 } fmt_pat[FMT_PATTERNS] =
197 		{
198 		    {'f', ".\\+"},	    /* only used when at end */
199 		    {'n', "\\d\\+"},
200 		    {'l', "\\d\\+"},
201 		    {'c', "\\d\\+"},
202 		    {'t', "."},
203 		    {'m', ".\\+"},
204 		    {'r', ".*"},
205 		    {'p', "[- 	.]*"},
206 		    {'v', "\\d\\+"},
207 		    {'s', ".\\+"}
208 		};
209 
210 /*
211  * Converts a 'errorformat' string to regular expression pattern
212  */
213     static int
214 efm_to_regpat(
215     char_u	*efm,
216     int		len,
217     efm_T	*fmt_ptr,
218     char_u	*regpat,
219     char_u	*errmsg)
220 {
221     char_u	*ptr;
222     char_u	*efmp;
223     char_u	*srcptr;
224     int		round;
225     int		idx = 0;
226 
227     /*
228      * Build regexp pattern from current 'errorformat' option
229      */
230     ptr = regpat;
231     *ptr++ = '^';
232     round = 0;
233     for (efmp = efm; efmp < efm + len; ++efmp)
234     {
235 	if (*efmp == '%')
236 	{
237 	    ++efmp;
238 	    for (idx = 0; idx < FMT_PATTERNS; ++idx)
239 		if (fmt_pat[idx].convchar == *efmp)
240 		    break;
241 	    if (idx < FMT_PATTERNS)
242 	    {
243 		if (fmt_ptr->addr[idx])
244 		{
245 		    sprintf((char *)errmsg,
246 			    _("E372: Too many %%%c in format string"), *efmp);
247 		    EMSG(errmsg);
248 		    return -1;
249 		}
250 		if ((idx
251 			    && idx < 6
252 			    && vim_strchr((char_u *)"DXOPQ",
253 				fmt_ptr->prefix) != NULL)
254 			|| (idx == 6
255 			    && vim_strchr((char_u *)"OPQ",
256 				fmt_ptr->prefix) == NULL))
257 		{
258 		    sprintf((char *)errmsg,
259 			    _("E373: Unexpected %%%c in format string"), *efmp);
260 		    EMSG(errmsg);
261 		    return -1;
262 		}
263 		fmt_ptr->addr[idx] = (char_u)++round;
264 		*ptr++ = '\\';
265 		*ptr++ = '(';
266 #ifdef BACKSLASH_IN_FILENAME
267 		if (*efmp == 'f')
268 		{
269 		    /* Also match "c:" in the file name, even when
270 		     * checking for a colon next: "%f:".
271 		     * "\%(\a:\)\=" */
272 		    STRCPY(ptr, "\\%(\\a:\\)\\=");
273 		    ptr += 10;
274 		}
275 #endif
276 		if (*efmp == 'f' && efmp[1] != NUL)
277 		{
278 		    if (efmp[1] != '\\' && efmp[1] != '%')
279 		    {
280 			/* A file name may contain spaces, but this isn't
281 			 * in "\f".  For "%f:%l:%m" there may be a ":" in
282 			 * the file name.  Use ".\{-1,}x" instead (x is
283 			 * the next character), the requirement that :999:
284 			 * follows should work. */
285 			STRCPY(ptr, ".\\{-1,}");
286 			ptr += 7;
287 		    }
288 		    else
289 		    {
290 			/* File name followed by '\\' or '%': include as
291 			 * many file name chars as possible. */
292 			STRCPY(ptr, "\\f\\+");
293 			ptr += 4;
294 		    }
295 		}
296 		else
297 		{
298 		    srcptr = (char_u *)fmt_pat[idx].pattern;
299 		    while ((*ptr = *srcptr++) != NUL)
300 			++ptr;
301 		}
302 		*ptr++ = '\\';
303 		*ptr++ = ')';
304 	    }
305 	    else if (*efmp == '*')
306 	    {
307 		if (*++efmp == '[' || *efmp == '\\')
308 		{
309 		    if ((*ptr++ = *efmp) == '[')	/* %*[^a-z0-9] etc. */
310 		    {
311 			if (efmp[1] == '^')
312 			    *ptr++ = *++efmp;
313 			if (efmp < efm + len)
314 			{
315 			    *ptr++ = *++efmp;	    /* could be ']' */
316 			    while (efmp < efm + len
317 				    && (*ptr++ = *++efmp) != ']')
318 				/* skip */;
319 			    if (efmp == efm + len)
320 			    {
321 				EMSG(_("E374: Missing ] in format string"));
322 				return -1;
323 			    }
324 			}
325 		    }
326 		    else if (efmp < efm + len)	/* %*\D, %*\s etc. */
327 			*ptr++ = *++efmp;
328 		    *ptr++ = '\\';
329 		    *ptr++ = '+';
330 		}
331 		else
332 		{
333 		    /* TODO: scanf()-like: %*ud, %*3c, %*f, ... ? */
334 		    sprintf((char *)errmsg,
335 			    _("E375: Unsupported %%%c in format string"), *efmp);
336 		    EMSG(errmsg);
337 		    return -1;
338 		}
339 	    }
340 	    else if (vim_strchr((char_u *)"%\\.^$~[", *efmp) != NULL)
341 		*ptr++ = *efmp;		/* regexp magic characters */
342 	    else if (*efmp == '#')
343 		*ptr++ = '*';
344 	    else if (*efmp == '>')
345 		fmt_ptr->conthere = TRUE;
346 	    else if (efmp == efm + 1)		/* analyse prefix */
347 	    {
348 		if (vim_strchr((char_u *)"+-", *efmp) != NULL)
349 		    fmt_ptr->flags = *efmp++;
350 		if (vim_strchr((char_u *)"DXAEWICZGOPQ", *efmp) != NULL)
351 		    fmt_ptr->prefix = *efmp;
352 		else
353 		{
354 		    sprintf((char *)errmsg,
355 			    _("E376: Invalid %%%c in format string prefix"), *efmp);
356 		    EMSG(errmsg);
357 		    return -1;
358 		}
359 	    }
360 	    else
361 	    {
362 		sprintf((char *)errmsg,
363 			_("E377: Invalid %%%c in format string"), *efmp);
364 		EMSG(errmsg);
365 		return -1;
366 	    }
367 	}
368 	else			/* copy normal character */
369 	{
370 	    if (*efmp == '\\' && efmp + 1 < efm + len)
371 		++efmp;
372 	    else if (vim_strchr((char_u *)".*^$~[", *efmp) != NULL)
373 		*ptr++ = '\\';	/* escape regexp atoms */
374 	    if (*efmp)
375 		*ptr++ = *efmp;
376 	}
377     }
378     *ptr++ = '$';
379     *ptr = NUL;
380 
381     return 0;
382 }
383 
384     static void
385 free_efm_list(efm_T **efm_first)
386 {
387     efm_T *efm_ptr;
388 
389     for (efm_ptr = *efm_first; efm_ptr != NULL; efm_ptr = *efm_first)
390     {
391 	*efm_first = efm_ptr->next;
392 	vim_regfree(efm_ptr->prog);
393 	vim_free(efm_ptr);
394     }
395     fmt_start = NULL;
396 }
397 
398 /* Parse 'errorformat' option */
399     static efm_T *
400 parse_efm_option(char_u *efm)
401 {
402     char_u	*errmsg = NULL;
403     int		errmsglen;
404     efm_T	*fmt_ptr = NULL;
405     efm_T	*fmt_first = NULL;
406     efm_T	*fmt_last = NULL;
407     char_u	*fmtstr = NULL;
408     int		len;
409     int		i;
410     int		round;
411 
412     errmsglen = CMDBUFFSIZE + 1;
413     errmsg = alloc_id(errmsglen, aid_qf_errmsg);
414     if (errmsg == NULL)
415 	goto parse_efm_end;
416 
417     /*
418      * Each part of the format string is copied and modified from errorformat
419      * to regex prog.  Only a few % characters are allowed.
420      */
421 
422     /*
423      * Get some space to modify the format string into.
424      */
425     i = (FMT_PATTERNS * 3) + ((int)STRLEN(efm) << 2);
426     for (round = FMT_PATTERNS; round > 0; )
427 	i += (int)STRLEN(fmt_pat[--round].pattern);
428 #ifdef COLON_IN_FILENAME
429     i += 12; /* "%f" can become twelve chars longer */
430 #else
431     i += 2; /* "%f" can become two chars longer */
432 #endif
433     if ((fmtstr = alloc(i)) == NULL)
434 	goto parse_efm_error;
435 
436     while (efm[0] != NUL)
437     {
438 	/*
439 	 * Allocate a new eformat structure and put it at the end of the list
440 	 */
441 	fmt_ptr = (efm_T *)alloc_clear((unsigned)sizeof(efm_T));
442 	if (fmt_ptr == NULL)
443 	    goto parse_efm_error;
444 	if (fmt_first == NULL)	    /* first one */
445 	    fmt_first = fmt_ptr;
446 	else
447 	    fmt_last->next = fmt_ptr;
448 	fmt_last = fmt_ptr;
449 
450 	/*
451 	 * Isolate one part in the 'errorformat' option
452 	 */
453 	for (len = 0; efm[len] != NUL && efm[len] != ','; ++len)
454 	    if (efm[len] == '\\' && efm[len + 1] != NUL)
455 		++len;
456 
457 	if (efm_to_regpat(efm, len, fmt_ptr, fmtstr, errmsg) == -1)
458 	    goto parse_efm_error;
459 	if ((fmt_ptr->prog = vim_regcomp(fmtstr, RE_MAGIC + RE_STRING)) == NULL)
460 	    goto parse_efm_error;
461 	/*
462 	 * Advance to next part
463 	 */
464 	efm = skip_to_option_part(efm + len);	/* skip comma and spaces */
465     }
466 
467     if (fmt_first == NULL)	/* nothing found */
468 	EMSG(_("E378: 'errorformat' contains no pattern"));
469 
470     goto parse_efm_end;
471 
472 parse_efm_error:
473     free_efm_list(&fmt_first);
474 
475 parse_efm_end:
476     vim_free(fmtstr);
477     vim_free(errmsg);
478 
479     return fmt_first;
480 }
481 
482 enum {
483     QF_FAIL = 0,
484     QF_OK = 1,
485     QF_END_OF_INPUT = 2,
486     QF_NOMEM = 3,
487     QF_IGNORE_LINE = 4
488 };
489 
490 typedef struct {
491     char_u	*linebuf;
492     int		linelen;
493     char_u	*growbuf;
494     int		growbufsiz;
495     FILE	*fd;
496     typval_T	*tv;
497     char_u	*p_str;
498     listitem_T	*p_li;
499     buf_T	*buf;
500     linenr_T	buflnum;
501     linenr_T	lnumlast;
502     vimconv_T	vc;
503 } qfstate_T;
504 
505     static char_u *
506 qf_grow_linebuf(qfstate_T *state, int newsz)
507 {
508     /*
509      * If the line exceeds LINE_MAXLEN exclude the last
510      * byte since it's not a NL character.
511      */
512     state->linelen = newsz > LINE_MAXLEN ? LINE_MAXLEN - 1 : newsz;
513     if (state->growbuf == NULL)
514     {
515 	state->growbuf = alloc(state->linelen + 1);
516 	if (state->growbuf == NULL)
517 	    return NULL;
518 	state->growbufsiz = state->linelen;
519     }
520     else if (state->linelen > state->growbufsiz)
521     {
522 	state->growbuf = vim_realloc(state->growbuf, state->linelen + 1);
523 	if (state->growbuf == NULL)
524 	    return NULL;
525 	state->growbufsiz = state->linelen;
526     }
527     return state->growbuf;
528 }
529 
530 /*
531  * Get the next string (separated by newline) from state->p_str.
532  */
533     static int
534 qf_get_next_str_line(qfstate_T *state)
535 {
536     /* Get the next line from the supplied string */
537     char_u	*p_str = state->p_str;
538     char_u	*p;
539     int		len;
540 
541     if (*p_str == NUL) /* Reached the end of the string */
542 	return QF_END_OF_INPUT;
543 
544     p = vim_strchr(p_str, '\n');
545     if (p != NULL)
546 	len = (int)(p - p_str) + 1;
547     else
548 	len = (int)STRLEN(p_str);
549 
550     if (len > IOSIZE - 2)
551     {
552 	state->linebuf = qf_grow_linebuf(state, len);
553 	if (state->linebuf == NULL)
554 	    return QF_NOMEM;
555     }
556     else
557     {
558 	state->linebuf = IObuff;
559 	state->linelen = len;
560     }
561     vim_strncpy(state->linebuf, p_str, state->linelen);
562 
563     /*
564      * Increment using len in order to discard the rest of the
565      * line if it exceeds LINE_MAXLEN.
566      */
567     p_str += len;
568     state->p_str = p_str;
569 
570     return QF_OK;
571 }
572 
573 /*
574  * Get the next string from state->p_Li.
575  */
576     static int
577 qf_get_next_list_line(qfstate_T *state)
578 {
579     listitem_T	*p_li = state->p_li;
580     int		len;
581 
582     while (p_li != NULL
583 	    && (p_li->li_tv.v_type != VAR_STRING
584 		|| p_li->li_tv.vval.v_string == NULL))
585 	p_li = p_li->li_next;	/* Skip non-string items */
586 
587     if (p_li == NULL)		/* End of the list */
588     {
589 	state->p_li = NULL;
590 	return QF_END_OF_INPUT;
591     }
592 
593     len = (int)STRLEN(p_li->li_tv.vval.v_string);
594     if (len > IOSIZE - 2)
595     {
596 	state->linebuf = qf_grow_linebuf(state, len);
597 	if (state->linebuf == NULL)
598 	    return QF_NOMEM;
599     }
600     else
601     {
602 	state->linebuf = IObuff;
603 	state->linelen = len;
604     }
605 
606     vim_strncpy(state->linebuf, p_li->li_tv.vval.v_string, state->linelen);
607 
608     state->p_li = p_li->li_next;	/* next item */
609     return QF_OK;
610 }
611 
612 /*
613  * Get the next string from state->buf.
614  */
615     static int
616 qf_get_next_buf_line(qfstate_T *state)
617 {
618     char_u	*p_buf = NULL;
619     int		len;
620 
621     /* Get the next line from the supplied buffer */
622     if (state->buflnum > state->lnumlast)
623 	return QF_END_OF_INPUT;
624 
625     p_buf = ml_get_buf(state->buf, state->buflnum, FALSE);
626     state->buflnum += 1;
627 
628     len = (int)STRLEN(p_buf);
629     if (len > IOSIZE - 2)
630     {
631 	state->linebuf = qf_grow_linebuf(state, len);
632 	if (state->linebuf == NULL)
633 	    return QF_NOMEM;
634     }
635     else
636     {
637 	state->linebuf = IObuff;
638 	state->linelen = len;
639     }
640     vim_strncpy(state->linebuf, p_buf, state->linelen);
641 
642     return QF_OK;
643 }
644 
645 /*
646  * Get the next string from file state->fd.
647  */
648     static int
649 qf_get_next_file_line(qfstate_T *state)
650 {
651     int	    discard;
652     int	    growbuflen;
653 
654     if (fgets((char *)IObuff, IOSIZE, state->fd) == NULL)
655 	return QF_END_OF_INPUT;
656 
657     discard = FALSE;
658     state->linelen = (int)STRLEN(IObuff);
659     if (state->linelen == IOSIZE - 1 && !(IObuff[state->linelen - 1] == '\n'))
660     {
661 	/*
662 	 * The current line exceeds IObuff, continue reading using
663 	 * growbuf until EOL or LINE_MAXLEN bytes is read.
664 	 */
665 	if (state->growbuf == NULL)
666 	{
667 	    state->growbufsiz = 2 * (IOSIZE - 1);
668 	    state->growbuf = alloc(state->growbufsiz);
669 	    if (state->growbuf == NULL)
670 		return QF_NOMEM;
671 	}
672 
673 	/* Copy the read part of the line, excluding null-terminator */
674 	memcpy(state->growbuf, IObuff, IOSIZE - 1);
675 	growbuflen = state->linelen;
676 
677 	for (;;)
678 	{
679 	    if (fgets((char *)state->growbuf + growbuflen,
680 			state->growbufsiz - growbuflen, state->fd) == NULL)
681 		break;
682 	    state->linelen = (int)STRLEN(state->growbuf + growbuflen);
683 	    growbuflen += state->linelen;
684 	    if ((state->growbuf)[growbuflen - 1] == '\n')
685 		break;
686 	    if (state->growbufsiz == LINE_MAXLEN)
687 	    {
688 		discard = TRUE;
689 		break;
690 	    }
691 
692 	    state->growbufsiz = 2 * state->growbufsiz < LINE_MAXLEN
693 		? 2 * state->growbufsiz : LINE_MAXLEN;
694 	    state->growbuf = vim_realloc(state->growbuf, state->growbufsiz);
695 	    if (state->growbuf == NULL)
696 		return QF_NOMEM;
697 	}
698 
699 	while (discard)
700 	{
701 	    /*
702 	     * The current line is longer than LINE_MAXLEN, continue
703 	     * reading but discard everything until EOL or EOF is
704 	     * reached.
705 	     */
706 	    if (fgets((char *)IObuff, IOSIZE, state->fd) == NULL
707 		    || (int)STRLEN(IObuff) < IOSIZE - 1
708 		    || IObuff[IOSIZE - 1] == '\n')
709 		break;
710 	}
711 
712 	state->linebuf = state->growbuf;
713 	state->linelen = growbuflen;
714     }
715     else
716 	state->linebuf = IObuff;
717 
718 #ifdef FEAT_MBYTE
719     /* Convert a line if it contains a non-ASCII character. */
720     if (state->vc.vc_type != CONV_NONE && has_non_ascii(state->linebuf))
721     {
722 	char_u	*line;
723 
724 	line = string_convert(&state->vc, state->linebuf, &state->linelen);
725 	if (line != NULL)
726 	{
727 	    if (state->linelen < IOSIZE)
728 	    {
729 		STRCPY(state->linebuf, line);
730 		vim_free(line);
731 	    }
732 	    else
733 	    {
734 		vim_free(state->growbuf);
735 		state->linebuf = state->growbuf = line;
736 		state->growbufsiz = state->linelen < LINE_MAXLEN
737 						? state->linelen : LINE_MAXLEN;
738 	    }
739 	}
740     }
741 #endif
742 
743     return QF_OK;
744 }
745 
746 /*
747  * Get the next string from a file/buffer/list/string.
748  */
749     static int
750 qf_get_nextline(qfstate_T *state)
751 {
752     int status = QF_FAIL;
753 
754     if (state->fd == NULL)
755     {
756 	if (state->tv != NULL)
757 	{
758 	    if (state->tv->v_type == VAR_STRING)
759 		/* Get the next line from the supplied string */
760 		status = qf_get_next_str_line(state);
761 	    else if (state->tv->v_type == VAR_LIST)
762 		/* Get the next line from the supplied list */
763 		status = qf_get_next_list_line(state);
764 	}
765 	else
766 	    /* Get the next line from the supplied buffer */
767 	    status = qf_get_next_buf_line(state);
768     }
769     else
770 	/* Get the next line from the supplied file */
771 	status = qf_get_next_file_line(state);
772 
773     if (status != QF_OK)
774 	return status;
775 
776     /* remove newline/CR from the line */
777     if (state->linelen > 0 && state->linebuf[state->linelen - 1] == '\n')
778     {
779 	state->linebuf[state->linelen - 1] = NUL;
780 #ifdef USE_CRNL
781 	if (state->linelen > 1 && state->linebuf[state->linelen - 2] == '\r')
782 	    state->linebuf[state->linelen - 2] = NUL;
783 #endif
784     }
785 
786 #ifdef FEAT_MBYTE
787     remove_bom(state->linebuf);
788 #endif
789 
790     return QF_OK;
791 }
792 
793 typedef struct {
794     char_u	*namebuf;
795     char_u	*errmsg;
796     int		errmsglen;
797     long	lnum;
798     int		col;
799     char_u	use_viscol;
800     char_u	*pattern;
801     int		enr;
802     int		type;
803     int		valid;
804 } qffields_T;
805 
806 /*
807  * Parse a line and get the quickfix fields.
808  * Return the QF_ status.
809  */
810     static int
811 qf_parse_line(
812 	qf_info_T	*qi,
813 	char_u		*linebuf,
814 	int		linelen,
815 	efm_T		*fmt_first,
816 	qffields_T	*fields)
817 {
818     efm_T		*fmt_ptr;
819     char_u		*ptr;
820     int			len;
821     int			i;
822     int			idx = 0;
823     char_u		*tail = NULL;
824     regmatch_T		regmatch;
825 
826     /* Always ignore case when looking for a matching error. */
827     regmatch.rm_ic = TRUE;
828 
829     /* If there was no %> item start at the first pattern */
830     if (fmt_start == NULL)
831 	fmt_ptr = fmt_first;
832     else
833     {
834 	fmt_ptr = fmt_start;
835 	fmt_start = NULL;
836     }
837 
838     /*
839      * Try to match each part of 'errorformat' until we find a complete
840      * match or no match.
841      */
842     fields->valid = TRUE;
843 restofline:
844     for ( ; fmt_ptr != NULL; fmt_ptr = fmt_ptr->next)
845     {
846 	int r;
847 
848 	idx = fmt_ptr->prefix;
849 	if (qi->qf_multiscan && vim_strchr((char_u *)"OPQ", idx) == NULL)
850 	    continue;
851 	fields->namebuf[0] = NUL;
852 	fields->pattern[0] = NUL;
853 	if (!qi->qf_multiscan)
854 	    fields->errmsg[0] = NUL;
855 	fields->lnum = 0;
856 	fields->col = 0;
857 	fields->use_viscol = FALSE;
858 	fields->enr = -1;
859 	fields->type = 0;
860 	tail = NULL;
861 
862 	regmatch.regprog = fmt_ptr->prog;
863 	r = vim_regexec(&regmatch, linebuf, (colnr_T)0);
864 	fmt_ptr->prog = regmatch.regprog;
865 	if (r)
866 	{
867 	    if ((idx == 'C' || idx == 'Z') && !qi->qf_multiline)
868 		continue;
869 	    if (vim_strchr((char_u *)"EWI", idx) != NULL)
870 		fields->type = idx;
871 	    else
872 		fields->type = 0;
873 	    /*
874 	     * Extract error message data from matched line.
875 	     * We check for an actual submatch, because "\[" and "\]" in
876 	     * the 'errorformat' may cause the wrong submatch to be used.
877 	     */
878 	    if ((i = (int)fmt_ptr->addr[0]) > 0)		/* %f */
879 	    {
880 		int c;
881 
882 		if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
883 		    continue;
884 
885 		/* Expand ~/file and $HOME/file to full path. */
886 		c = *regmatch.endp[i];
887 		*regmatch.endp[i] = NUL;
888 		expand_env(regmatch.startp[i], fields->namebuf, CMDBUFFSIZE);
889 		*regmatch.endp[i] = c;
890 
891 		if (vim_strchr((char_u *)"OPQ", idx) != NULL
892 			&& mch_getperm(fields->namebuf) == -1)
893 		    continue;
894 	    }
895 	    if ((i = (int)fmt_ptr->addr[1]) > 0)		/* %n */
896 	    {
897 		if (regmatch.startp[i] == NULL)
898 		    continue;
899 		fields->enr = (int)atol((char *)regmatch.startp[i]);
900 	    }
901 	    if ((i = (int)fmt_ptr->addr[2]) > 0)		/* %l */
902 	    {
903 		if (regmatch.startp[i] == NULL)
904 		    continue;
905 		fields->lnum = atol((char *)regmatch.startp[i]);
906 	    }
907 	    if ((i = (int)fmt_ptr->addr[3]) > 0)		/* %c */
908 	    {
909 		if (regmatch.startp[i] == NULL)
910 		    continue;
911 		fields->col = (int)atol((char *)regmatch.startp[i]);
912 	    }
913 	    if ((i = (int)fmt_ptr->addr[4]) > 0)		/* %t */
914 	    {
915 		if (regmatch.startp[i] == NULL)
916 		    continue;
917 		fields->type = *regmatch.startp[i];
918 	    }
919 	    if (fmt_ptr->flags == '+' && !qi->qf_multiscan)	/* %+ */
920 	    {
921 		if (linelen > fields->errmsglen)
922 		{
923 		    /* linelen + null terminator */
924 		    if ((fields->errmsg = vim_realloc(fields->errmsg,
925 				    linelen + 1)) == NULL)
926 			return QF_NOMEM;
927 		    fields->errmsglen = linelen + 1;
928 		}
929 		vim_strncpy(fields->errmsg, linebuf, linelen);
930 	    }
931 	    else if ((i = (int)fmt_ptr->addr[5]) > 0)	/* %m */
932 	    {
933 		if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
934 		    continue;
935 		len = (int)(regmatch.endp[i] - regmatch.startp[i]);
936 		if (len > fields->errmsglen)
937 		{
938 		    /* len + null terminator */
939 		    if ((fields->errmsg = vim_realloc(fields->errmsg, len + 1))
940 			    == NULL)
941 			return QF_NOMEM;
942 		    fields->errmsglen = len + 1;
943 		}
944 		vim_strncpy(fields->errmsg, regmatch.startp[i], len);
945 	    }
946 	    if ((i = (int)fmt_ptr->addr[6]) > 0)		/* %r */
947 	    {
948 		if (regmatch.startp[i] == NULL)
949 		    continue;
950 		tail = regmatch.startp[i];
951 	    }
952 	    if ((i = (int)fmt_ptr->addr[7]) > 0)		/* %p */
953 	    {
954 		char_u	*match_ptr;
955 
956 		if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
957 		    continue;
958 		fields->col = 0;
959 		for (match_ptr = regmatch.startp[i];
960 			match_ptr != regmatch.endp[i]; ++match_ptr)
961 		{
962 		    ++fields->col;
963 		    if (*match_ptr == TAB)
964 		    {
965 			fields->col += 7;
966 			fields->col -= fields->col % 8;
967 		    }
968 		}
969 		++fields->col;
970 		fields->use_viscol = TRUE;
971 	    }
972 	    if ((i = (int)fmt_ptr->addr[8]) > 0)		/* %v */
973 	    {
974 		if (regmatch.startp[i] == NULL)
975 		    continue;
976 		fields->col = (int)atol((char *)regmatch.startp[i]);
977 		fields->use_viscol = TRUE;
978 	    }
979 	    if ((i = (int)fmt_ptr->addr[9]) > 0)		/* %s */
980 	    {
981 		if (regmatch.startp[i] == NULL || regmatch.endp[i] == NULL)
982 		    continue;
983 		len = (int)(regmatch.endp[i] - regmatch.startp[i]);
984 		if (len > CMDBUFFSIZE - 5)
985 		    len = CMDBUFFSIZE - 5;
986 		STRCPY(fields->pattern, "^\\V");
987 		STRNCAT(fields->pattern, regmatch.startp[i], len);
988 		fields->pattern[len + 3] = '\\';
989 		fields->pattern[len + 4] = '$';
990 		fields->pattern[len + 5] = NUL;
991 	    }
992 	    break;
993 	}
994     }
995     qi->qf_multiscan = FALSE;
996 
997     if (fmt_ptr == NULL || idx == 'D' || idx == 'X')
998     {
999 	if (fmt_ptr != NULL)
1000 	{
1001 	    if (idx == 'D')				/* enter directory */
1002 	    {
1003 		if (*fields->namebuf == NUL)
1004 		{
1005 		    EMSG(_("E379: Missing or empty directory name"));
1006 		    return QF_FAIL;
1007 		}
1008 		qi->qf_directory =
1009 		    qf_push_dir(fields->namebuf, &qi->qf_dir_stack, FALSE);
1010 		if (qi->qf_directory == NULL)
1011 		    return QF_FAIL;
1012 	    }
1013 	    else if (idx == 'X')			/* leave directory */
1014 		qi->qf_directory = qf_pop_dir(&qi->qf_dir_stack);
1015 	}
1016 	fields->namebuf[0] = NUL;	/* no match found, remove file name */
1017 	fields->lnum = 0;			/* don't jump to this line */
1018 	fields->valid = FALSE;
1019 	if (linelen > fields->errmsglen)
1020 	{
1021 	    /* linelen + null terminator */
1022 	    if ((fields->errmsg = vim_realloc(fields->errmsg,
1023 			    linelen + 1)) == NULL)
1024 		return QF_NOMEM;
1025 	    fields->errmsglen = linelen + 1;
1026 	}
1027 	/* copy whole line to error message */
1028 	vim_strncpy(fields->errmsg, linebuf, linelen);
1029 	if (fmt_ptr == NULL)
1030 	    qi->qf_multiline = qi->qf_multiignore = FALSE;
1031     }
1032     else if (fmt_ptr != NULL)
1033     {
1034 	/* honor %> item */
1035 	if (fmt_ptr->conthere)
1036 	    fmt_start = fmt_ptr;
1037 
1038 	if (vim_strchr((char_u *)"AEWI", idx) != NULL)
1039 	{
1040 	    qi->qf_multiline = TRUE;	/* start of a multi-line message */
1041 	    qi->qf_multiignore = FALSE;	/* reset continuation */
1042 	}
1043 	else if (vim_strchr((char_u *)"CZ", idx) != NULL)
1044 	{				/* continuation of multi-line msg */
1045 	    if (!qi->qf_multiignore)
1046 	    {
1047 		qfline_T *qfprev = qi->qf_lists[qi->qf_curlist].qf_last;
1048 
1049 		if (qfprev == NULL)
1050 		    return QF_FAIL;
1051 		if (*fields->errmsg && !qi->qf_multiignore)
1052 		{
1053 		    len = (int)STRLEN(qfprev->qf_text);
1054 		    if ((ptr = alloc((unsigned)(len + STRLEN(fields->errmsg) + 2)))
1055 			    == NULL)
1056 			return QF_FAIL;
1057 		    STRCPY(ptr, qfprev->qf_text);
1058 		    vim_free(qfprev->qf_text);
1059 		    qfprev->qf_text = ptr;
1060 		    *(ptr += len) = '\n';
1061 		    STRCPY(++ptr, fields->errmsg);
1062 		}
1063 		if (qfprev->qf_nr == -1)
1064 		    qfprev->qf_nr = fields->enr;
1065 		if (vim_isprintc(fields->type) && !qfprev->qf_type)
1066 		    /* only printable chars allowed */
1067 		    qfprev->qf_type = fields->type;
1068 
1069 		if (!qfprev->qf_lnum)
1070 		    qfprev->qf_lnum = fields->lnum;
1071 		if (!qfprev->qf_col)
1072 		    qfprev->qf_col = fields->col;
1073 		qfprev->qf_viscol = fields->use_viscol;
1074 		if (!qfprev->qf_fnum)
1075 		    qfprev->qf_fnum = qf_get_fnum(qi, qi->qf_directory,
1076 			    *fields->namebuf || qi->qf_directory != NULL
1077 			    ? fields->namebuf
1078 			    : qi->qf_currfile != NULL && fields->valid
1079 			    ? qi->qf_currfile : 0);
1080 	    }
1081 	    if (idx == 'Z')
1082 		qi->qf_multiline = qi->qf_multiignore = FALSE;
1083 	    line_breakcheck();
1084 	    return QF_IGNORE_LINE;
1085 	}
1086 	else if (vim_strchr((char_u *)"OPQ", idx) != NULL)
1087 	{
1088 	    /* global file names */
1089 	    fields->valid = FALSE;
1090 	    if (*fields->namebuf == NUL || mch_getperm(fields->namebuf) >= 0)
1091 	    {
1092 		if (*fields->namebuf && idx == 'P')
1093 		    qi->qf_currfile =
1094 			qf_push_dir(fields->namebuf, &qi->qf_file_stack, TRUE);
1095 		else if (idx == 'Q')
1096 		    qi->qf_currfile = qf_pop_dir(&qi->qf_file_stack);
1097 		*fields->namebuf = NUL;
1098 		if (tail && *tail)
1099 		{
1100 		    STRMOVE(IObuff, skipwhite(tail));
1101 		    qi->qf_multiscan = TRUE;
1102 		    goto restofline;
1103 		}
1104 	    }
1105 	}
1106 	if (fmt_ptr->flags == '-')	/* generally exclude this line */
1107 	{
1108 	    if (qi->qf_multiline)
1109 		/* also exclude continuation lines */
1110 		qi->qf_multiignore = TRUE;
1111 	    return QF_IGNORE_LINE;
1112 	}
1113     }
1114 
1115     return QF_OK;
1116 }
1117 
1118 /*
1119  * Read the errorfile "efile" into memory, line by line, building the error
1120  * list.
1121  * Alternative: when "efile" is NULL read errors from buffer "buf".
1122  * Alternative: when "tv" is not NULL get errors from the string or list.
1123  * Always use 'errorformat' from "buf" if there is a local value.
1124  * Then "lnumfirst" and "lnumlast" specify the range of lines to use.
1125  * Set the title of the list to "qf_title".
1126  * Return -1 for error, number of errors for success.
1127  */
1128     static int
1129 qf_init_ext(
1130     qf_info_T	    *qi,
1131     char_u	    *efile,
1132     buf_T	    *buf,
1133     typval_T	    *tv,
1134     char_u	    *errorformat,
1135     int		    newlist,		/* TRUE: start a new error list */
1136     linenr_T	    lnumfirst,		/* first line number to use */
1137     linenr_T	    lnumlast,		/* last line number to use */
1138     char_u	    *qf_title,
1139     char_u	    *enc)
1140 {
1141     qfstate_T	    state;
1142     qffields_T	    fields;
1143 #ifdef FEAT_WINDOWS
1144     qfline_T	    *old_last = NULL;
1145     int		    adding = FALSE;
1146 #endif
1147     static efm_T    *fmt_first = NULL;
1148     char_u	    *efm;
1149     static char_u   *last_efm = NULL;
1150     int		    retval = -1;	/* default: return error flag */
1151     int		    status;
1152 
1153     vim_memset(&state, 0, sizeof(state));
1154     vim_memset(&fields, 0, sizeof(fields));
1155 #ifdef FEAT_MBYTE
1156     state.vc.vc_type = CONV_NONE;
1157     if (enc != NULL && *enc != NUL)
1158 	convert_setup(&state.vc, enc, p_enc);
1159 #endif
1160     fields.namebuf = alloc_id(CMDBUFFSIZE + 1, aid_qf_namebuf);
1161     fields.errmsglen = CMDBUFFSIZE + 1;
1162     fields.errmsg = alloc_id(fields.errmsglen, aid_qf_errmsg);
1163     fields.pattern = alloc_id(CMDBUFFSIZE + 1, aid_qf_pattern);
1164     if (fields.namebuf == NULL || fields.errmsg == NULL ||
1165 	    fields.pattern == NULL)
1166 	goto qf_init_end;
1167 
1168     if (efile != NULL && (state.fd = mch_fopen((char *)efile, "r")) == NULL)
1169     {
1170 	EMSG2(_(e_openerrf), efile);
1171 	goto qf_init_end;
1172     }
1173 
1174     if (newlist || qi->qf_curlist == qi->qf_listcount)
1175 	/* make place for a new list */
1176 	qf_new_list(qi, qf_title);
1177 #ifdef FEAT_WINDOWS
1178     else if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
1179     {
1180 	/* Adding to existing list, use last entry. */
1181 	adding = TRUE;
1182 	old_last = qi->qf_lists[qi->qf_curlist].qf_last;
1183     }
1184 #endif
1185 
1186     /* Use the local value of 'errorformat' if it's set. */
1187     if (errorformat == p_efm && tv == NULL && *buf->b_p_efm != NUL)
1188 	efm = buf->b_p_efm;
1189     else
1190 	efm = errorformat;
1191 
1192     /*
1193      * If we are not adding or adding to another list: clear the state.
1194      */
1195     if (newlist || qi->qf_curlist != qi->qf_dir_curlist)
1196     {
1197 	qi->qf_dir_curlist = qi->qf_curlist;
1198 	qf_clean_dir_stack(&qi->qf_dir_stack);
1199 	qi->qf_directory = NULL;
1200 	qf_clean_dir_stack(&qi->qf_file_stack);
1201 	qi->qf_currfile = NULL;
1202 	qi->qf_multiline = FALSE;
1203 	qi->qf_multiignore = FALSE;
1204 	qi->qf_multiscan = FALSE;
1205     }
1206 
1207     /*
1208      * If the errorformat didn't change between calls, then reuse the
1209      * previously parsed values.
1210      */
1211     if (last_efm == NULL || (STRCMP(last_efm, efm) != 0))
1212     {
1213 	/* free the previously parsed data */
1214 	vim_free(last_efm);
1215 	last_efm = NULL;
1216 	free_efm_list(&fmt_first);
1217 
1218 	/* parse the current 'efm' */
1219 	fmt_first = parse_efm_option(efm);
1220 	if (fmt_first != NULL)
1221 	    last_efm = vim_strsave(efm);
1222     }
1223 
1224     if (fmt_first == NULL)	/* nothing found */
1225 	goto error2;
1226 
1227     /*
1228      * got_int is reset here, because it was probably set when killing the
1229      * ":make" command, but we still want to read the errorfile then.
1230      */
1231     got_int = FALSE;
1232 
1233     if (tv != NULL)
1234     {
1235 	if (tv->v_type == VAR_STRING)
1236 	    state.p_str = tv->vval.v_string;
1237 	else if (tv->v_type == VAR_LIST)
1238 	    state.p_li = tv->vval.v_list->lv_first;
1239 	state.tv = tv;
1240     }
1241     state.buf = buf;
1242     state.buflnum = lnumfirst;
1243     state.lnumlast = lnumlast;
1244 
1245     /*
1246      * Read the lines in the error file one by one.
1247      * Try to recognize one of the error formats in each line.
1248      */
1249     while (!got_int)
1250     {
1251 	/* Get the next line from a file/buffer/list/string */
1252 	status = qf_get_nextline(&state);
1253 	if (status == QF_NOMEM)		/* memory alloc failure */
1254 	    goto qf_init_end;
1255 	if (status == QF_END_OF_INPUT)	/* end of input */
1256 	    break;
1257 
1258 	status = qf_parse_line(qi, state.linebuf, state.linelen, fmt_first,
1259 								      &fields);
1260 	if (status == QF_FAIL)
1261 	    goto error2;
1262 	if (status == QF_NOMEM)
1263 	    goto qf_init_end;
1264 	if (status == QF_IGNORE_LINE)
1265 	    continue;
1266 
1267 	if (qf_add_entry(qi,
1268 			qi->qf_directory,
1269 			(*fields.namebuf || qi->qf_directory != NULL)
1270 			    ? fields.namebuf
1271 			    : ((qi->qf_currfile != NULL && fields.valid)
1272 				? qi->qf_currfile : (char_u *)NULL),
1273 			0,
1274 			fields.errmsg,
1275 			fields.lnum,
1276 			fields.col,
1277 			fields.use_viscol,
1278 			fields.pattern,
1279 			fields.enr,
1280 			fields.type,
1281 			fields.valid) == FAIL)
1282 	    goto error2;
1283 	line_breakcheck();
1284     }
1285     if (state.fd == NULL || !ferror(state.fd))
1286     {
1287 	if (qi->qf_lists[qi->qf_curlist].qf_index == 0)
1288 	{
1289 	    /* no valid entry found */
1290 	    qi->qf_lists[qi->qf_curlist].qf_ptr =
1291 		qi->qf_lists[qi->qf_curlist].qf_start;
1292 	    qi->qf_lists[qi->qf_curlist].qf_index = 1;
1293 	    qi->qf_lists[qi->qf_curlist].qf_nonevalid = TRUE;
1294 	}
1295 	else
1296 	{
1297 	    qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
1298 	    if (qi->qf_lists[qi->qf_curlist].qf_ptr == NULL)
1299 		qi->qf_lists[qi->qf_curlist].qf_ptr =
1300 		    qi->qf_lists[qi->qf_curlist].qf_start;
1301 	}
1302 	/* return number of matches */
1303 	retval = qi->qf_lists[qi->qf_curlist].qf_count;
1304 	goto qf_init_end;
1305     }
1306     EMSG(_(e_readerrf));
1307 error2:
1308     if (!adding)
1309     {
1310 	qf_free(qi, qi->qf_curlist);
1311 	qi->qf_listcount--;
1312 	if (qi->qf_curlist > 0)
1313 	    --qi->qf_curlist;
1314     }
1315 qf_init_end:
1316     if (state.fd != NULL)
1317 	fclose(state.fd);
1318     vim_free(fields.namebuf);
1319     vim_free(fields.errmsg);
1320     vim_free(fields.pattern);
1321     vim_free(state.growbuf);
1322 
1323 #ifdef FEAT_WINDOWS
1324     qf_update_buffer(qi, old_last);
1325 #endif
1326 #ifdef FEAT_MBYTE
1327     if (state.vc.vc_type != CONV_NONE)
1328 	convert_setup(&state.vc, NULL, NULL);
1329 #endif
1330 
1331     return retval;
1332 }
1333 
1334     static void
1335 qf_store_title(qf_info_T *qi, char_u *title)
1336 {
1337     if (title != NULL)
1338     {
1339 	char_u *p = alloc((int)STRLEN(title) + 2);
1340 
1341 	qi->qf_lists[qi->qf_curlist].qf_title = p;
1342 	if (p != NULL)
1343 	    sprintf((char *)p, ":%s", (char *)title);
1344     }
1345 }
1346 
1347 /*
1348  * Prepare for adding a new quickfix list.
1349  */
1350     static void
1351 qf_new_list(qf_info_T *qi, char_u *qf_title)
1352 {
1353     int		i;
1354 
1355     /*
1356      * If the current entry is not the last entry, delete entries beyond
1357      * the current entry.  This makes it possible to browse in a tree-like
1358      * way with ":grep'.
1359      */
1360     while (qi->qf_listcount > qi->qf_curlist + 1)
1361 	qf_free(qi, --qi->qf_listcount);
1362 
1363     /*
1364      * When the stack is full, remove to oldest entry
1365      * Otherwise, add a new entry.
1366      */
1367     if (qi->qf_listcount == LISTCOUNT)
1368     {
1369 	qf_free(qi, 0);
1370 	for (i = 1; i < LISTCOUNT; ++i)
1371 	    qi->qf_lists[i - 1] = qi->qf_lists[i];
1372 	qi->qf_curlist = LISTCOUNT - 1;
1373     }
1374     else
1375 	qi->qf_curlist = qi->qf_listcount++;
1376     vim_memset(&qi->qf_lists[qi->qf_curlist], 0, (size_t)(sizeof(qf_list_T)));
1377     qf_store_title(qi, qf_title);
1378 }
1379 
1380 /*
1381  * Free a location list
1382  */
1383     static void
1384 ll_free_all(qf_info_T **pqi)
1385 {
1386     int		i;
1387     qf_info_T	*qi;
1388 
1389     qi = *pqi;
1390     if (qi == NULL)
1391 	return;
1392     *pqi = NULL;	/* Remove reference to this list */
1393 
1394     qi->qf_refcount--;
1395     if (qi->qf_refcount < 1)
1396     {
1397 	/* No references to this location list */
1398 	for (i = 0; i < qi->qf_listcount; ++i)
1399 	    qf_free(qi, i);
1400 	vim_free(qi);
1401     }
1402 }
1403 
1404     void
1405 qf_free_all(win_T *wp)
1406 {
1407     int		i;
1408     qf_info_T	*qi = &ql_info;
1409 
1410     if (wp != NULL)
1411     {
1412 	/* location list */
1413 	ll_free_all(&wp->w_llist);
1414 	ll_free_all(&wp->w_llist_ref);
1415     }
1416     else
1417 	/* quickfix list */
1418 	for (i = 0; i < qi->qf_listcount; ++i)
1419 	    qf_free(qi, i);
1420 }
1421 
1422 /*
1423  * Add an entry to the end of the list of errors.
1424  * Returns OK or FAIL.
1425  */
1426     static int
1427 qf_add_entry(
1428     qf_info_T	*qi,		/* quickfix list */
1429     char_u	*dir,		/* optional directory name */
1430     char_u	*fname,		/* file name or NULL */
1431     int		bufnum,		/* buffer number or zero */
1432     char_u	*mesg,		/* message */
1433     long	lnum,		/* line number */
1434     int		col,		/* column */
1435     int		vis_col,	/* using visual column */
1436     char_u	*pattern,	/* search pattern */
1437     int		nr,		/* error number */
1438     int		type,		/* type character */
1439     int		valid)		/* valid entry */
1440 {
1441     qfline_T	*qfp;
1442     qfline_T	**lastp;	/* pointer to qf_last or NULL */
1443 
1444     if ((qfp = (qfline_T *)alloc((unsigned)sizeof(qfline_T))) == NULL)
1445 	return FAIL;
1446     if (bufnum != 0)
1447     {
1448 	buf_T *buf = buflist_findnr(bufnum);
1449 
1450 	qfp->qf_fnum = bufnum;
1451 	if (buf != NULL)
1452 	    buf->b_has_qf_entry |=
1453 		(qi == &ql_info) ? BUF_HAS_QF_ENTRY : BUF_HAS_LL_ENTRY;
1454     }
1455     else
1456 	qfp->qf_fnum = qf_get_fnum(qi, dir, fname);
1457     if ((qfp->qf_text = vim_strsave(mesg)) == NULL)
1458     {
1459 	vim_free(qfp);
1460 	return FAIL;
1461     }
1462     qfp->qf_lnum = lnum;
1463     qfp->qf_col = col;
1464     qfp->qf_viscol = vis_col;
1465     if (pattern == NULL || *pattern == NUL)
1466 	qfp->qf_pattern = NULL;
1467     else if ((qfp->qf_pattern = vim_strsave(pattern)) == NULL)
1468     {
1469 	vim_free(qfp->qf_text);
1470 	vim_free(qfp);
1471 	return FAIL;
1472     }
1473     qfp->qf_nr = nr;
1474     if (type != 1 && !vim_isprintc(type)) /* only printable chars allowed */
1475 	type = 0;
1476     qfp->qf_type = type;
1477     qfp->qf_valid = valid;
1478 
1479     lastp = &qi->qf_lists[qi->qf_curlist].qf_last;
1480     if (qi->qf_lists[qi->qf_curlist].qf_count == 0)
1481 				/* first element in the list */
1482     {
1483 	qi->qf_lists[qi->qf_curlist].qf_start = qfp;
1484 	qi->qf_lists[qi->qf_curlist].qf_ptr = qfp;
1485 	qi->qf_lists[qi->qf_curlist].qf_index = 0;
1486 	qfp->qf_prev = NULL;
1487     }
1488     else
1489     {
1490 	qfp->qf_prev = *lastp;
1491 	(*lastp)->qf_next = qfp;
1492     }
1493     qfp->qf_next = NULL;
1494     qfp->qf_cleared = FALSE;
1495     *lastp = qfp;
1496     ++qi->qf_lists[qi->qf_curlist].qf_count;
1497     if (qi->qf_lists[qi->qf_curlist].qf_index == 0 && qfp->qf_valid)
1498 				/* first valid entry */
1499     {
1500 	qi->qf_lists[qi->qf_curlist].qf_index =
1501 	    qi->qf_lists[qi->qf_curlist].qf_count;
1502 	qi->qf_lists[qi->qf_curlist].qf_ptr = qfp;
1503     }
1504 
1505     return OK;
1506 }
1507 
1508 /*
1509  * Allocate a new location list
1510  */
1511     static qf_info_T *
1512 ll_new_list(void)
1513 {
1514     qf_info_T *qi;
1515 
1516     qi = (qf_info_T *)alloc((unsigned)sizeof(qf_info_T));
1517     if (qi != NULL)
1518     {
1519 	vim_memset(qi, 0, (size_t)(sizeof(qf_info_T)));
1520 	qi->qf_refcount++;
1521     }
1522 
1523     return qi;
1524 }
1525 
1526 /*
1527  * Return the location list for window 'wp'.
1528  * If not present, allocate a location list
1529  */
1530     static qf_info_T *
1531 ll_get_or_alloc_list(win_T *wp)
1532 {
1533     if (IS_LL_WINDOW(wp))
1534 	/* For a location list window, use the referenced location list */
1535 	return wp->w_llist_ref;
1536 
1537     /*
1538      * For a non-location list window, w_llist_ref should not point to a
1539      * location list.
1540      */
1541     ll_free_all(&wp->w_llist_ref);
1542 
1543     if (wp->w_llist == NULL)
1544 	wp->w_llist = ll_new_list();	    /* new location list */
1545     return wp->w_llist;
1546 }
1547 
1548 /*
1549  * Copy the location list from window "from" to window "to".
1550  */
1551     void
1552 copy_loclist(win_T *from, win_T *to)
1553 {
1554     qf_info_T	*qi;
1555     int		idx;
1556     int		i;
1557 
1558     /*
1559      * When copying from a location list window, copy the referenced
1560      * location list. For other windows, copy the location list for
1561      * that window.
1562      */
1563     if (IS_LL_WINDOW(from))
1564 	qi = from->w_llist_ref;
1565     else
1566 	qi = from->w_llist;
1567 
1568     if (qi == NULL)		    /* no location list to copy */
1569 	return;
1570 
1571     /* allocate a new location list */
1572     if ((to->w_llist = ll_new_list()) == NULL)
1573 	return;
1574 
1575     to->w_llist->qf_listcount = qi->qf_listcount;
1576 
1577     /* Copy the location lists one at a time */
1578     for (idx = 0; idx < qi->qf_listcount; idx++)
1579     {
1580 	qf_list_T   *from_qfl;
1581 	qf_list_T   *to_qfl;
1582 
1583 	to->w_llist->qf_curlist = idx;
1584 
1585 	from_qfl = &qi->qf_lists[idx];
1586 	to_qfl = &to->w_llist->qf_lists[idx];
1587 
1588 	/* Some of the fields are populated by qf_add_entry() */
1589 	to_qfl->qf_nonevalid = from_qfl->qf_nonevalid;
1590 	to_qfl->qf_count = 0;
1591 	to_qfl->qf_index = 0;
1592 	to_qfl->qf_start = NULL;
1593 	to_qfl->qf_last = NULL;
1594 	to_qfl->qf_ptr = NULL;
1595 	if (from_qfl->qf_title != NULL)
1596 	    to_qfl->qf_title = vim_strsave(from_qfl->qf_title);
1597 	else
1598 	    to_qfl->qf_title = NULL;
1599 
1600 	if (from_qfl->qf_count)
1601 	{
1602 	    qfline_T    *from_qfp;
1603 	    qfline_T    *prevp;
1604 
1605 	    /* copy all the location entries in this list */
1606 	    for (i = 0, from_qfp = from_qfl->qf_start;
1607 		    i < from_qfl->qf_count && from_qfp != NULL;
1608 		    ++i, from_qfp = from_qfp->qf_next)
1609 	    {
1610 		if (qf_add_entry(to->w_llist,
1611 				 NULL,
1612 				 NULL,
1613 				 0,
1614 				 from_qfp->qf_text,
1615 				 from_qfp->qf_lnum,
1616 				 from_qfp->qf_col,
1617 				 from_qfp->qf_viscol,
1618 				 from_qfp->qf_pattern,
1619 				 from_qfp->qf_nr,
1620 				 0,
1621 				 from_qfp->qf_valid) == FAIL)
1622 		{
1623 		    qf_free_all(to);
1624 		    return;
1625 		}
1626 		/*
1627 		 * qf_add_entry() will not set the qf_num field, as the
1628 		 * directory and file names are not supplied. So the qf_fnum
1629 		 * field is copied here.
1630 		 */
1631 		prevp = to->w_llist->qf_lists[to->w_llist->qf_curlist].qf_last;
1632 		prevp->qf_fnum = from_qfp->qf_fnum; /* file number */
1633 		prevp->qf_type = from_qfp->qf_type; /* error type */
1634 		if (from_qfl->qf_ptr == from_qfp)
1635 		    to_qfl->qf_ptr = prevp;	    /* current location */
1636 	    }
1637 	}
1638 
1639 	to_qfl->qf_index = from_qfl->qf_index;	/* current index in the list */
1640 
1641 	/* When no valid entries are present in the list, qf_ptr points to
1642 	 * the first item in the list */
1643 	if (to_qfl->qf_nonevalid)
1644 	{
1645 	    to_qfl->qf_ptr = to_qfl->qf_start;
1646 	    to_qfl->qf_index = 1;
1647 	}
1648     }
1649 
1650     to->w_llist->qf_curlist = qi->qf_curlist;	/* current list */
1651 }
1652 
1653 /*
1654  * Looking up a buffer can be slow if there are many.  Remember the last one
1655  * to make this a lot faster if there are multiple matches in the same file.
1656  */
1657 static char_u *qf_last_bufname = NULL;
1658 static bufref_T  qf_last_bufref = {NULL, 0};
1659 
1660 /*
1661  * Get buffer number for file "directory/fname".
1662  * Also sets the b_has_qf_entry flag.
1663  */
1664     static int
1665 qf_get_fnum(qf_info_T *qi, char_u *directory, char_u *fname)
1666 {
1667     char_u	*ptr = NULL;
1668     buf_T	*buf;
1669     char_u	*bufname;
1670 
1671     if (fname == NULL || *fname == NUL)		/* no file name */
1672 	return 0;
1673 
1674 #ifdef VMS
1675     vms_remove_version(fname);
1676 #endif
1677 #ifdef BACKSLASH_IN_FILENAME
1678     if (directory != NULL)
1679 	slash_adjust(directory);
1680     slash_adjust(fname);
1681 #endif
1682     if (directory != NULL && !vim_isAbsName(fname)
1683 	    && (ptr = concat_fnames(directory, fname, TRUE)) != NULL)
1684     {
1685 	/*
1686 	 * Here we check if the file really exists.
1687 	 * This should normally be true, but if make works without
1688 	 * "leaving directory"-messages we might have missed a
1689 	 * directory change.
1690 	 */
1691 	if (mch_getperm(ptr) < 0)
1692 	{
1693 	    vim_free(ptr);
1694 	    directory = qf_guess_filepath(qi, fname);
1695 	    if (directory)
1696 		ptr = concat_fnames(directory, fname, TRUE);
1697 	    else
1698 		ptr = vim_strsave(fname);
1699 	}
1700 	/* Use concatenated directory name and file name */
1701 	bufname = ptr;
1702     }
1703     else
1704 	bufname = fname;
1705 
1706     if (qf_last_bufname != NULL && STRCMP(bufname, qf_last_bufname) == 0
1707 	    && bufref_valid(&qf_last_bufref))
1708     {
1709 	buf = qf_last_bufref.br_buf;
1710 	vim_free(ptr);
1711     }
1712     else
1713     {
1714 	vim_free(qf_last_bufname);
1715 	buf = buflist_new(bufname, NULL, (linenr_T)0, BLN_NOOPT);
1716 	if (bufname == ptr)
1717 	    qf_last_bufname = bufname;
1718 	else
1719 	    qf_last_bufname = vim_strsave(bufname);
1720 	set_bufref(&qf_last_bufref, buf);
1721     }
1722     if (buf == NULL)
1723 	return 0;
1724 
1725     buf->b_has_qf_entry =
1726 			(qi == &ql_info) ? BUF_HAS_QF_ENTRY : BUF_HAS_LL_ENTRY;
1727     return buf->b_fnum;
1728 }
1729 
1730 /*
1731  * Push dirbuf onto the directory stack and return pointer to actual dir or
1732  * NULL on error.
1733  */
1734     static char_u *
1735 qf_push_dir(char_u *dirbuf, struct dir_stack_T **stackptr, int is_file_stack)
1736 {
1737     struct dir_stack_T  *ds_new;
1738     struct dir_stack_T  *ds_ptr;
1739 
1740     /* allocate new stack element and hook it in */
1741     ds_new = (struct dir_stack_T *)alloc((unsigned)sizeof(struct dir_stack_T));
1742     if (ds_new == NULL)
1743 	return NULL;
1744 
1745     ds_new->next = *stackptr;
1746     *stackptr = ds_new;
1747 
1748     /* store directory on the stack */
1749     if (vim_isAbsName(dirbuf)
1750 	    || (*stackptr)->next == NULL
1751 	    || (*stackptr && is_file_stack))
1752 	(*stackptr)->dirname = vim_strsave(dirbuf);
1753     else
1754     {
1755 	/* Okay we don't have an absolute path.
1756 	 * dirbuf must be a subdir of one of the directories on the stack.
1757 	 * Let's search...
1758 	 */
1759 	ds_new = (*stackptr)->next;
1760 	(*stackptr)->dirname = NULL;
1761 	while (ds_new)
1762 	{
1763 	    vim_free((*stackptr)->dirname);
1764 	    (*stackptr)->dirname = concat_fnames(ds_new->dirname, dirbuf,
1765 		    TRUE);
1766 	    if (mch_isdir((*stackptr)->dirname) == TRUE)
1767 		break;
1768 
1769 	    ds_new = ds_new->next;
1770 	}
1771 
1772 	/* clean up all dirs we already left */
1773 	while ((*stackptr)->next != ds_new)
1774 	{
1775 	    ds_ptr = (*stackptr)->next;
1776 	    (*stackptr)->next = (*stackptr)->next->next;
1777 	    vim_free(ds_ptr->dirname);
1778 	    vim_free(ds_ptr);
1779 	}
1780 
1781 	/* Nothing found -> it must be on top level */
1782 	if (ds_new == NULL)
1783 	{
1784 	    vim_free((*stackptr)->dirname);
1785 	    (*stackptr)->dirname = vim_strsave(dirbuf);
1786 	}
1787     }
1788 
1789     if ((*stackptr)->dirname != NULL)
1790 	return (*stackptr)->dirname;
1791     else
1792     {
1793 	ds_ptr = *stackptr;
1794 	*stackptr = (*stackptr)->next;
1795 	vim_free(ds_ptr);
1796 	return NULL;
1797     }
1798 }
1799 
1800 
1801 /*
1802  * pop dirbuf from the directory stack and return previous directory or NULL if
1803  * stack is empty
1804  */
1805     static char_u *
1806 qf_pop_dir(struct dir_stack_T **stackptr)
1807 {
1808     struct dir_stack_T  *ds_ptr;
1809 
1810     /* TODO: Should we check if dirbuf is the directory on top of the stack?
1811      * What to do if it isn't? */
1812 
1813     /* pop top element and free it */
1814     if (*stackptr != NULL)
1815     {
1816 	ds_ptr = *stackptr;
1817 	*stackptr = (*stackptr)->next;
1818 	vim_free(ds_ptr->dirname);
1819 	vim_free(ds_ptr);
1820     }
1821 
1822     /* return NEW top element as current dir or NULL if stack is empty*/
1823     return *stackptr ? (*stackptr)->dirname : NULL;
1824 }
1825 
1826 /*
1827  * clean up directory stack
1828  */
1829     static void
1830 qf_clean_dir_stack(struct dir_stack_T **stackptr)
1831 {
1832     struct dir_stack_T  *ds_ptr;
1833 
1834     while ((ds_ptr = *stackptr) != NULL)
1835     {
1836 	*stackptr = (*stackptr)->next;
1837 	vim_free(ds_ptr->dirname);
1838 	vim_free(ds_ptr);
1839     }
1840 }
1841 
1842 /*
1843  * Check in which directory of the directory stack the given file can be
1844  * found.
1845  * Returns a pointer to the directory name or NULL if not found.
1846  * Cleans up intermediate directory entries.
1847  *
1848  * TODO: How to solve the following problem?
1849  * If we have the this directory tree:
1850  *     ./
1851  *     ./aa
1852  *     ./aa/bb
1853  *     ./bb
1854  *     ./bb/x.c
1855  * and make says:
1856  *     making all in aa
1857  *     making all in bb
1858  *     x.c:9: Error
1859  * Then qf_push_dir thinks we are in ./aa/bb, but we are in ./bb.
1860  * qf_guess_filepath will return NULL.
1861  */
1862     static char_u *
1863 qf_guess_filepath(qf_info_T *qi, char_u *filename)
1864 {
1865     struct dir_stack_T     *ds_ptr;
1866     struct dir_stack_T     *ds_tmp;
1867     char_u		   *fullname;
1868 
1869     /* no dirs on the stack - there's nothing we can do */
1870     if (qi->qf_dir_stack == NULL)
1871 	return NULL;
1872 
1873     ds_ptr = qi->qf_dir_stack->next;
1874     fullname = NULL;
1875     while (ds_ptr)
1876     {
1877 	vim_free(fullname);
1878 	fullname = concat_fnames(ds_ptr->dirname, filename, TRUE);
1879 
1880 	/* If concat_fnames failed, just go on. The worst thing that can happen
1881 	 * is that we delete the entire stack.
1882 	 */
1883 	if ((fullname != NULL) && (mch_getperm(fullname) >= 0))
1884 	    break;
1885 
1886 	ds_ptr = ds_ptr->next;
1887     }
1888 
1889     vim_free(fullname);
1890 
1891     /* clean up all dirs we already left */
1892     while (qi->qf_dir_stack->next != ds_ptr)
1893     {
1894 	ds_tmp = qi->qf_dir_stack->next;
1895 	qi->qf_dir_stack->next = qi->qf_dir_stack->next->next;
1896 	vim_free(ds_tmp->dirname);
1897 	vim_free(ds_tmp);
1898     }
1899 
1900     return ds_ptr==NULL? NULL: ds_ptr->dirname;
1901 }
1902 
1903 /*
1904  * When loading a file from the quickfix, the auto commands may modify it.
1905  * This may invalidate the current quickfix entry.  This function checks
1906  * whether a entry is still present in the quickfix.
1907  * Similar to location list.
1908  */
1909     static int
1910 is_qf_entry_present(qf_info_T *qi, qfline_T *qf_ptr)
1911 {
1912     qf_list_T	*qfl;
1913     qfline_T	*qfp;
1914     int		i;
1915 
1916     qfl = &qi->qf_lists[qi->qf_curlist];
1917 
1918     /* Search for the entry in the current list */
1919     for (i = 0, qfp = qfl->qf_start; i < qfl->qf_count;
1920 	    ++i, qfp = qfp->qf_next)
1921 	if (qfp == NULL || qfp == qf_ptr)
1922 	    break;
1923 
1924     if (i == qfl->qf_count) /* Entry is not found */
1925 	return FALSE;
1926 
1927     return TRUE;
1928 }
1929 
1930 /*
1931  * jump to a quickfix line
1932  * if dir == FORWARD go "errornr" valid entries forward
1933  * if dir == BACKWARD go "errornr" valid entries backward
1934  * if dir == FORWARD_FILE go "errornr" valid entries files backward
1935  * if dir == BACKWARD_FILE go "errornr" valid entries files backward
1936  * else if "errornr" is zero, redisplay the same line
1937  * else go to entry "errornr"
1938  */
1939     void
1940 qf_jump(
1941     qf_info_T	*qi,
1942     int		dir,
1943     int		errornr,
1944     int		forceit)
1945 {
1946     qf_info_T		*ll_ref;
1947     qfline_T		*qf_ptr;
1948     qfline_T		*old_qf_ptr;
1949     int			qf_index;
1950     int			old_qf_fnum;
1951     int			old_qf_index;
1952     int			prev_index;
1953     static char_u	*e_no_more_items = (char_u *)N_("E553: No more items");
1954     char_u		*err = e_no_more_items;
1955     linenr_T		i;
1956     buf_T		*old_curbuf;
1957     linenr_T		old_lnum;
1958     colnr_T		screen_col;
1959     colnr_T		char_col;
1960     char_u		*line;
1961 #ifdef FEAT_WINDOWS
1962     char_u		*old_swb = p_swb;
1963     unsigned		old_swb_flags = swb_flags;
1964     int			opened_window = FALSE;
1965     win_T		*win;
1966     win_T		*altwin;
1967     int			flags;
1968 #endif
1969     win_T		*oldwin = curwin;
1970     int			print_message = TRUE;
1971     int			len;
1972 #ifdef FEAT_FOLDING
1973     int			old_KeyTyped = KeyTyped; /* getting file may reset it */
1974 #endif
1975     int			ok = OK;
1976     int			usable_win;
1977 
1978     if (qi == NULL)
1979 	qi = &ql_info;
1980 
1981     if (qi->qf_curlist >= qi->qf_listcount
1982 	|| qi->qf_lists[qi->qf_curlist].qf_count == 0)
1983     {
1984 	EMSG(_(e_quickfix));
1985 	return;
1986     }
1987 
1988     qf_ptr = qi->qf_lists[qi->qf_curlist].qf_ptr;
1989     old_qf_ptr = qf_ptr;
1990     qf_index = qi->qf_lists[qi->qf_curlist].qf_index;
1991     old_qf_index = qf_index;
1992     if (dir == FORWARD || dir == FORWARD_FILE)	    /* next valid entry */
1993     {
1994 	while (errornr--)
1995 	{
1996 	    old_qf_ptr = qf_ptr;
1997 	    prev_index = qf_index;
1998 	    old_qf_fnum = qf_ptr->qf_fnum;
1999 	    do
2000 	    {
2001 		if (qf_index == qi->qf_lists[qi->qf_curlist].qf_count
2002 						   || qf_ptr->qf_next == NULL)
2003 		{
2004 		    qf_ptr = old_qf_ptr;
2005 		    qf_index = prev_index;
2006 		    if (err != NULL)
2007 		    {
2008 			EMSG(_(err));
2009 			goto theend;
2010 		    }
2011 		    errornr = 0;
2012 		    break;
2013 		}
2014 		++qf_index;
2015 		qf_ptr = qf_ptr->qf_next;
2016 	    } while ((!qi->qf_lists[qi->qf_curlist].qf_nonevalid
2017 		      && !qf_ptr->qf_valid)
2018 		  || (dir == FORWARD_FILE && qf_ptr->qf_fnum == old_qf_fnum));
2019 	    err = NULL;
2020 	}
2021     }
2022     else if (dir == BACKWARD || dir == BACKWARD_FILE)  /* prev. valid entry */
2023     {
2024 	while (errornr--)
2025 	{
2026 	    old_qf_ptr = qf_ptr;
2027 	    prev_index = qf_index;
2028 	    old_qf_fnum = qf_ptr->qf_fnum;
2029 	    do
2030 	    {
2031 		if (qf_index == 1 || qf_ptr->qf_prev == NULL)
2032 		{
2033 		    qf_ptr = old_qf_ptr;
2034 		    qf_index = prev_index;
2035 		    if (err != NULL)
2036 		    {
2037 			EMSG(_(err));
2038 			goto theend;
2039 		    }
2040 		    errornr = 0;
2041 		    break;
2042 		}
2043 		--qf_index;
2044 		qf_ptr = qf_ptr->qf_prev;
2045 	    } while ((!qi->qf_lists[qi->qf_curlist].qf_nonevalid
2046 		      && !qf_ptr->qf_valid)
2047 		  || (dir == BACKWARD_FILE && qf_ptr->qf_fnum == old_qf_fnum));
2048 	    err = NULL;
2049 	}
2050     }
2051     else if (errornr != 0)	/* go to specified number */
2052     {
2053 	while (errornr < qf_index && qf_index > 1 && qf_ptr->qf_prev != NULL)
2054 	{
2055 	    --qf_index;
2056 	    qf_ptr = qf_ptr->qf_prev;
2057 	}
2058 	while (errornr > qf_index && qf_index <
2059 				    qi->qf_lists[qi->qf_curlist].qf_count
2060 						   && qf_ptr->qf_next != NULL)
2061 	{
2062 	    ++qf_index;
2063 	    qf_ptr = qf_ptr->qf_next;
2064 	}
2065     }
2066 
2067 #ifdef FEAT_WINDOWS
2068     qi->qf_lists[qi->qf_curlist].qf_index = qf_index;
2069     if (qf_win_pos_update(qi, old_qf_index))
2070 	/* No need to print the error message if it's visible in the error
2071 	 * window */
2072 	print_message = FALSE;
2073 
2074     /*
2075      * For ":helpgrep" find a help window or open one.
2076      */
2077     if (qf_ptr->qf_type == 1 && (!curwin->w_buffer->b_help || cmdmod.tab != 0))
2078     {
2079 	win_T	*wp;
2080 
2081 	if (cmdmod.tab != 0)
2082 	    wp = NULL;
2083 	else
2084 	    FOR_ALL_WINDOWS(wp)
2085 		if (wp->w_buffer != NULL && wp->w_buffer->b_help)
2086 		    break;
2087 	if (wp != NULL && wp->w_buffer->b_nwindows > 0)
2088 	    win_enter(wp, TRUE);
2089 	else
2090 	{
2091 	    /*
2092 	     * Split off help window; put it at far top if no position
2093 	     * specified, the current window is vertically split and narrow.
2094 	     */
2095 	    flags = WSP_HELP;
2096 	    if (cmdmod.split == 0 && curwin->w_width != Columns
2097 						      && curwin->w_width < 80)
2098 		flags |= WSP_TOP;
2099 	    if (qi != &ql_info)
2100 		flags |= WSP_NEWLOC;  /* don't copy the location list */
2101 
2102 	    if (win_split(0, flags) == FAIL)
2103 		goto theend;
2104 	    opened_window = TRUE;	/* close it when fail */
2105 
2106 	    if (curwin->w_height < p_hh)
2107 		win_setheight((int)p_hh);
2108 
2109 	    if (qi != &ql_info)	    /* not a quickfix list */
2110 	    {
2111 		/* The new window should use the supplied location list */
2112 		curwin->w_llist = qi;
2113 		qi->qf_refcount++;
2114 	    }
2115 	}
2116 
2117 	if (!p_im)
2118 	    restart_edit = 0;	    /* don't want insert mode in help file */
2119     }
2120 
2121     /*
2122      * If currently in the quickfix window, find another window to show the
2123      * file in.
2124      */
2125     if (bt_quickfix(curbuf) && !opened_window)
2126     {
2127 	win_T *usable_win_ptr = NULL;
2128 
2129 	/*
2130 	 * If there is no file specified, we don't know where to go.
2131 	 * But do advance, otherwise ":cn" gets stuck.
2132 	 */
2133 	if (qf_ptr->qf_fnum == 0)
2134 	    goto theend;
2135 
2136 	usable_win = 0;
2137 
2138 	ll_ref = curwin->w_llist_ref;
2139 	if (ll_ref != NULL)
2140 	{
2141 	    /* Find a window using the same location list that is not a
2142 	     * quickfix window. */
2143 	    FOR_ALL_WINDOWS(usable_win_ptr)
2144 		if (usable_win_ptr->w_llist == ll_ref
2145 			&& usable_win_ptr->w_buffer->b_p_bt[0] != 'q')
2146 		{
2147 		    usable_win = 1;
2148 		    break;
2149 		}
2150 	}
2151 
2152 	if (!usable_win)
2153 	{
2154 	    /* Locate a window showing a normal buffer */
2155 	    FOR_ALL_WINDOWS(win)
2156 		if (win->w_buffer->b_p_bt[0] == NUL)
2157 		{
2158 		    usable_win = 1;
2159 		    break;
2160 		}
2161 	}
2162 
2163 	/*
2164 	 * If no usable window is found and 'switchbuf' contains "usetab"
2165 	 * then search in other tabs.
2166 	 */
2167 	if (!usable_win && (swb_flags & SWB_USETAB))
2168 	{
2169 	    tabpage_T	*tp;
2170 	    win_T	*wp;
2171 
2172 	    FOR_ALL_TAB_WINDOWS(tp, wp)
2173 	    {
2174 		if (wp->w_buffer->b_fnum == qf_ptr->qf_fnum)
2175 		{
2176 		    goto_tabpage_win(tp, wp);
2177 		    usable_win = 1;
2178 		    goto win_found;
2179 		}
2180 	    }
2181 	}
2182 win_found:
2183 
2184 	/*
2185 	 * If there is only one window and it is the quickfix window, create a
2186 	 * new one above the quickfix window.
2187 	 */
2188 	if ((ONE_WINDOW && bt_quickfix(curbuf)) || !usable_win)
2189 	{
2190 	    flags = WSP_ABOVE;
2191 	    if (ll_ref != NULL)
2192 		flags |= WSP_NEWLOC;
2193 	    if (win_split(0, flags) == FAIL)
2194 		goto failed;		/* not enough room for window */
2195 	    opened_window = TRUE;	/* close it when fail */
2196 	    p_swb = empty_option;	/* don't split again */
2197 	    swb_flags = 0;
2198 	    RESET_BINDING(curwin);
2199 	    if (ll_ref != NULL)
2200 	    {
2201 		/* The new window should use the location list from the
2202 		 * location list window */
2203 		curwin->w_llist = ll_ref;
2204 		ll_ref->qf_refcount++;
2205 	    }
2206 	}
2207 	else
2208 	{
2209 	    if (curwin->w_llist_ref != NULL)
2210 	    {
2211 		/* In a location window */
2212 		win = usable_win_ptr;
2213 		if (win == NULL)
2214 		{
2215 		    /* Find the window showing the selected file */
2216 		    FOR_ALL_WINDOWS(win)
2217 			if (win->w_buffer->b_fnum == qf_ptr->qf_fnum)
2218 			    break;
2219 		    if (win == NULL)
2220 		    {
2221 			/* Find a previous usable window */
2222 			win = curwin;
2223 			do
2224 			{
2225 			    if (win->w_buffer->b_p_bt[0] == NUL)
2226 				break;
2227 			    if (win->w_prev == NULL)
2228 				win = lastwin;	/* wrap around the top */
2229 			    else
2230 				win = win->w_prev; /* go to previous window */
2231 			} while (win != curwin);
2232 		    }
2233 		}
2234 		win_goto(win);
2235 
2236 		/* If the location list for the window is not set, then set it
2237 		 * to the location list from the location window */
2238 		if (win->w_llist == NULL)
2239 		{
2240 		    win->w_llist = ll_ref;
2241 		    ll_ref->qf_refcount++;
2242 		}
2243 	    }
2244 	    else
2245 	    {
2246 
2247 	    /*
2248 	     * Try to find a window that shows the right buffer.
2249 	     * Default to the window just above the quickfix buffer.
2250 	     */
2251 	    win = curwin;
2252 	    altwin = NULL;
2253 	    for (;;)
2254 	    {
2255 		if (win->w_buffer->b_fnum == qf_ptr->qf_fnum)
2256 		    break;
2257 		if (win->w_prev == NULL)
2258 		    win = lastwin;	/* wrap around the top */
2259 		else
2260 		    win = win->w_prev;	/* go to previous window */
2261 
2262 		if (IS_QF_WINDOW(win))
2263 		{
2264 		    /* Didn't find it, go to the window before the quickfix
2265 		     * window. */
2266 		    if (altwin != NULL)
2267 			win = altwin;
2268 		    else if (curwin->w_prev != NULL)
2269 			win = curwin->w_prev;
2270 		    else
2271 			win = curwin->w_next;
2272 		    break;
2273 		}
2274 
2275 		/* Remember a usable window. */
2276 		if (altwin == NULL && !win->w_p_pvw
2277 					   && win->w_buffer->b_p_bt[0] == NUL)
2278 		    altwin = win;
2279 	    }
2280 
2281 	    win_goto(win);
2282 	    }
2283 	}
2284     }
2285 #endif
2286 
2287     /*
2288      * If there is a file name,
2289      * read the wanted file if needed, and check autowrite etc.
2290      */
2291     old_curbuf = curbuf;
2292     old_lnum = curwin->w_cursor.lnum;
2293 
2294     if (qf_ptr->qf_fnum != 0)
2295     {
2296 	if (qf_ptr->qf_type == 1)
2297 	{
2298 	    /* Open help file (do_ecmd() will set b_help flag, readfile() will
2299 	     * set b_p_ro flag). */
2300 	    if (!can_abandon(curbuf, forceit))
2301 	    {
2302 		EMSG(_(e_nowrtmsg));
2303 		ok = FALSE;
2304 	    }
2305 	    else
2306 		ok = do_ecmd(qf_ptr->qf_fnum, NULL, NULL, NULL, (linenr_T)1,
2307 					   ECMD_HIDE + ECMD_SET_HELP,
2308 					   oldwin == curwin ? curwin : NULL);
2309 	}
2310 	else
2311 	{
2312 	    int old_qf_curlist = qi->qf_curlist;
2313 	    int is_abort = FALSE;
2314 
2315 	    ok = buflist_getfile(qf_ptr->qf_fnum,
2316 			    (linenr_T)1, GETF_SETMARK | GETF_SWITCH, forceit);
2317 	    if (qi != &ql_info && !win_valid_any_tab(oldwin))
2318 	    {
2319 		EMSG(_("E924: Current window was closed"));
2320 		is_abort = TRUE;
2321 		opened_window = FALSE;
2322 	    }
2323 	    else if (old_qf_curlist != qi->qf_curlist
2324 		    || !is_qf_entry_present(qi, qf_ptr))
2325 	    {
2326 		if (qi == &ql_info)
2327 		    EMSG(_("E925: Current quickfix was changed"));
2328 		else
2329 		    EMSG(_("E926: Current location list was changed"));
2330 		is_abort = TRUE;
2331 	    }
2332 
2333 	    if (is_abort)
2334 	    {
2335 		ok = FALSE;
2336 		qi = NULL;
2337 		qf_ptr = NULL;
2338 	    }
2339 	}
2340     }
2341 
2342     if (ok == OK)
2343     {
2344 	/* When not switched to another buffer, still need to set pc mark */
2345 	if (curbuf == old_curbuf)
2346 	    setpcmark();
2347 
2348 	if (qf_ptr->qf_pattern == NULL)
2349 	{
2350 	    /*
2351 	     * Go to line with error, unless qf_lnum is 0.
2352 	     */
2353 	    i = qf_ptr->qf_lnum;
2354 	    if (i > 0)
2355 	    {
2356 		if (i > curbuf->b_ml.ml_line_count)
2357 		    i = curbuf->b_ml.ml_line_count;
2358 		curwin->w_cursor.lnum = i;
2359 	    }
2360 	    if (qf_ptr->qf_col > 0)
2361 	    {
2362 		curwin->w_cursor.col = qf_ptr->qf_col - 1;
2363 #ifdef FEAT_VIRTUALEDIT
2364 		curwin->w_cursor.coladd = 0;
2365 #endif
2366 		if (qf_ptr->qf_viscol == TRUE)
2367 		{
2368 		    /*
2369 		     * Check each character from the beginning of the error
2370 		     * line up to the error column.  For each tab character
2371 		     * found, reduce the error column value by the length of
2372 		     * a tab character.
2373 		     */
2374 		    line = ml_get_curline();
2375 		    screen_col = 0;
2376 		    for (char_col = 0; char_col < curwin->w_cursor.col; ++char_col)
2377 		    {
2378 			if (*line == NUL)
2379 			    break;
2380 			if (*line++ == '\t')
2381 			{
2382 			    curwin->w_cursor.col -= 7 - (screen_col % 8);
2383 			    screen_col += 8 - (screen_col % 8);
2384 			}
2385 			else
2386 			    ++screen_col;
2387 		    }
2388 		}
2389 		check_cursor();
2390 	    }
2391 	    else
2392 		beginline(BL_WHITE | BL_FIX);
2393 	}
2394 	else
2395 	{
2396 	    pos_T save_cursor;
2397 
2398 	    /* Move the cursor to the first line in the buffer */
2399 	    save_cursor = curwin->w_cursor;
2400 	    curwin->w_cursor.lnum = 0;
2401 	    if (!do_search(NULL, '/', qf_ptr->qf_pattern, (long)1,
2402 							   SEARCH_KEEP, NULL))
2403 		curwin->w_cursor = save_cursor;
2404 	}
2405 
2406 #ifdef FEAT_FOLDING
2407 	if ((fdo_flags & FDO_QUICKFIX) && old_KeyTyped)
2408 	    foldOpenCursor();
2409 #endif
2410 	if (print_message)
2411 	{
2412 	    /* Update the screen before showing the message, unless the screen
2413 	     * scrolled up. */
2414 	    if (!msg_scrolled)
2415 		update_topline_redraw();
2416 	    sprintf((char *)IObuff, _("(%d of %d)%s%s: "), qf_index,
2417 		    qi->qf_lists[qi->qf_curlist].qf_count,
2418 		    qf_ptr->qf_cleared ? _(" (line deleted)") : "",
2419 		    (char *)qf_types(qf_ptr->qf_type, qf_ptr->qf_nr));
2420 	    /* Add the message, skipping leading whitespace and newlines. */
2421 	    len = (int)STRLEN(IObuff);
2422 	    qf_fmt_text(skipwhite(qf_ptr->qf_text), IObuff + len, IOSIZE - len);
2423 
2424 	    /* Output the message.  Overwrite to avoid scrolling when the 'O'
2425 	     * flag is present in 'shortmess'; But when not jumping, print the
2426 	     * whole message. */
2427 	    i = msg_scroll;
2428 	    if (curbuf == old_curbuf && curwin->w_cursor.lnum == old_lnum)
2429 		msg_scroll = TRUE;
2430 	    else if (!msg_scrolled && shortmess(SHM_OVERALL))
2431 		msg_scroll = FALSE;
2432 	    msg_attr_keep(IObuff, 0, TRUE);
2433 	    msg_scroll = i;
2434 	}
2435     }
2436     else
2437     {
2438 #ifdef FEAT_WINDOWS
2439 	if (opened_window)
2440 	    win_close(curwin, TRUE);    /* Close opened window */
2441 #endif
2442 	if (qf_ptr != NULL && qf_ptr->qf_fnum != 0)
2443 	{
2444 	    /*
2445 	     * Couldn't open file, so put index back where it was.  This could
2446 	     * happen if the file was readonly and we changed something.
2447 	     */
2448 #ifdef FEAT_WINDOWS
2449 failed:
2450 #endif
2451 	    qf_ptr = old_qf_ptr;
2452 	    qf_index = old_qf_index;
2453 	}
2454     }
2455 theend:
2456     if (qi != NULL)
2457     {
2458 	qi->qf_lists[qi->qf_curlist].qf_ptr = qf_ptr;
2459 	qi->qf_lists[qi->qf_curlist].qf_index = qf_index;
2460     }
2461 #ifdef FEAT_WINDOWS
2462     if (p_swb != old_swb && opened_window)
2463     {
2464 	/* Restore old 'switchbuf' value, but not when an autocommand or
2465 	 * modeline has changed the value. */
2466 	if (p_swb == empty_option)
2467 	{
2468 	    p_swb = old_swb;
2469 	    swb_flags = old_swb_flags;
2470 	}
2471 	else
2472 	    free_string_option(old_swb);
2473     }
2474 #endif
2475 }
2476 
2477 /*
2478  * ":clist": list all errors
2479  * ":llist": list all locations
2480  */
2481     void
2482 qf_list(exarg_T *eap)
2483 {
2484     buf_T	*buf;
2485     char_u	*fname;
2486     qfline_T	*qfp;
2487     int		i;
2488     int		idx1 = 1;
2489     int		idx2 = -1;
2490     char_u	*arg = eap->arg;
2491     int		plus = FALSE;
2492     int		all = eap->forceit;	/* if not :cl!, only show
2493 						   recognised errors */
2494     qf_info_T	*qi = &ql_info;
2495 
2496     if (eap->cmdidx == CMD_llist)
2497     {
2498 	qi = GET_LOC_LIST(curwin);
2499 	if (qi == NULL)
2500 	{
2501 	    EMSG(_(e_loclist));
2502 	    return;
2503 	}
2504     }
2505 
2506     if (qi->qf_curlist >= qi->qf_listcount
2507 	|| qi->qf_lists[qi->qf_curlist].qf_count == 0)
2508     {
2509 	EMSG(_(e_quickfix));
2510 	return;
2511     }
2512     if (*arg == '+')
2513     {
2514 	++arg;
2515 	plus = TRUE;
2516     }
2517     if (!get_list_range(&arg, &idx1, &idx2) || *arg != NUL)
2518     {
2519 	EMSG(_(e_trailing));
2520 	return;
2521     }
2522     if (plus)
2523     {
2524 	i = qi->qf_lists[qi->qf_curlist].qf_index;
2525 	idx2 = i + idx1;
2526 	idx1 = i;
2527     }
2528     else
2529     {
2530 	i = qi->qf_lists[qi->qf_curlist].qf_count;
2531 	if (idx1 < 0)
2532 	    idx1 = (-idx1 > i) ? 0 : idx1 + i + 1;
2533 	if (idx2 < 0)
2534 	    idx2 = (-idx2 > i) ? 0 : idx2 + i + 1;
2535     }
2536 
2537     if (qi->qf_lists[qi->qf_curlist].qf_nonevalid)
2538 	all = TRUE;
2539     qfp = qi->qf_lists[qi->qf_curlist].qf_start;
2540     for (i = 1; !got_int && i <= qi->qf_lists[qi->qf_curlist].qf_count; )
2541     {
2542 	if ((qfp->qf_valid || all) && idx1 <= i && i <= idx2)
2543 	{
2544 	    msg_putchar('\n');
2545 	    if (got_int)
2546 		break;
2547 
2548 	    fname = NULL;
2549 	    if (qfp->qf_fnum != 0
2550 			      && (buf = buflist_findnr(qfp->qf_fnum)) != NULL)
2551 	    {
2552 		fname = buf->b_fname;
2553 		if (qfp->qf_type == 1)	/* :helpgrep */
2554 		    fname = gettail(fname);
2555 	    }
2556 	    if (fname == NULL)
2557 		sprintf((char *)IObuff, "%2d", i);
2558 	    else
2559 		vim_snprintf((char *)IObuff, IOSIZE, "%2d %s",
2560 							    i, (char *)fname);
2561 	    msg_outtrans_attr(IObuff, i == qi->qf_lists[qi->qf_curlist].qf_index
2562 					   ? HL_ATTR(HLF_L) : HL_ATTR(HLF_D));
2563 	    if (qfp->qf_lnum == 0)
2564 		IObuff[0] = NUL;
2565 	    else if (qfp->qf_col == 0)
2566 		sprintf((char *)IObuff, ":%ld", qfp->qf_lnum);
2567 	    else
2568 		sprintf((char *)IObuff, ":%ld col %d",
2569 						   qfp->qf_lnum, qfp->qf_col);
2570 	    sprintf((char *)IObuff + STRLEN(IObuff), "%s:",
2571 				  (char *)qf_types(qfp->qf_type, qfp->qf_nr));
2572 	    msg_puts_attr(IObuff, HL_ATTR(HLF_N));
2573 	    if (qfp->qf_pattern != NULL)
2574 	    {
2575 		qf_fmt_text(qfp->qf_pattern, IObuff, IOSIZE);
2576 		STRCAT(IObuff, ":");
2577 		msg_puts(IObuff);
2578 	    }
2579 	    msg_puts((char_u *)" ");
2580 
2581 	    /* Remove newlines and leading whitespace from the text.  For an
2582 	     * unrecognized line keep the indent, the compiler may mark a word
2583 	     * with ^^^^. */
2584 	    qf_fmt_text((fname != NULL || qfp->qf_lnum != 0)
2585 				     ? skipwhite(qfp->qf_text) : qfp->qf_text,
2586 							      IObuff, IOSIZE);
2587 	    msg_prt_line(IObuff, FALSE);
2588 	    out_flush();		/* show one line at a time */
2589 	}
2590 
2591 	qfp = qfp->qf_next;
2592 	if (qfp == NULL)
2593 	    break;
2594 	++i;
2595 	ui_breakcheck();
2596     }
2597 }
2598 
2599 /*
2600  * Remove newlines and leading whitespace from an error message.
2601  * Put the result in "buf[bufsize]".
2602  */
2603     static void
2604 qf_fmt_text(char_u *text, char_u *buf, int bufsize)
2605 {
2606     int		i;
2607     char_u	*p = text;
2608 
2609     for (i = 0; *p != NUL && i < bufsize - 1; ++i)
2610     {
2611 	if (*p == '\n')
2612 	{
2613 	    buf[i] = ' ';
2614 	    while (*++p != NUL)
2615 		if (!VIM_ISWHITE(*p) && *p != '\n')
2616 		    break;
2617 	}
2618 	else
2619 	    buf[i] = *p++;
2620     }
2621     buf[i] = NUL;
2622 }
2623 
2624     static void
2625 qf_msg(qf_info_T *qi, int which, char *lead)
2626 {
2627     char   *title = (char *)qi->qf_lists[which].qf_title;
2628     int    count = qi->qf_lists[which].qf_count;
2629     char_u buf[IOSIZE];
2630 
2631     vim_snprintf((char *)buf, IOSIZE, _("%serror list %d of %d; %d errors "),
2632 	    lead,
2633 	    which + 1,
2634 	    qi->qf_listcount,
2635 	    count);
2636 
2637     if (title != NULL)
2638     {
2639 	size_t	len = STRLEN(buf);
2640 
2641 	if (len < 34)
2642 	{
2643 	    vim_memset(buf + len, ' ', 34 - len);
2644 	    buf[34] = NUL;
2645 	}
2646 	vim_strcat(buf, (char_u *)title, IOSIZE);
2647     }
2648     trunc_string(buf, buf, Columns - 1, IOSIZE);
2649     msg(buf);
2650 }
2651 
2652 /*
2653  * ":colder [count]": Up in the quickfix stack.
2654  * ":cnewer [count]": Down in the quickfix stack.
2655  * ":lolder [count]": Up in the location list stack.
2656  * ":lnewer [count]": Down in the location list stack.
2657  */
2658     void
2659 qf_age(exarg_T *eap)
2660 {
2661     qf_info_T	*qi = &ql_info;
2662     int		count;
2663 
2664     if (eap->cmdidx == CMD_lolder || eap->cmdidx == CMD_lnewer)
2665     {
2666 	qi = GET_LOC_LIST(curwin);
2667 	if (qi == NULL)
2668 	{
2669 	    EMSG(_(e_loclist));
2670 	    return;
2671 	}
2672     }
2673 
2674     if (eap->addr_count != 0)
2675 	count = eap->line2;
2676     else
2677 	count = 1;
2678     while (count--)
2679     {
2680 	if (eap->cmdidx == CMD_colder || eap->cmdidx == CMD_lolder)
2681 	{
2682 	    if (qi->qf_curlist == 0)
2683 	    {
2684 		EMSG(_("E380: At bottom of quickfix stack"));
2685 		break;
2686 	    }
2687 	    --qi->qf_curlist;
2688 	}
2689 	else
2690 	{
2691 	    if (qi->qf_curlist >= qi->qf_listcount - 1)
2692 	    {
2693 		EMSG(_("E381: At top of quickfix stack"));
2694 		break;
2695 	    }
2696 	    ++qi->qf_curlist;
2697 	}
2698     }
2699     qf_msg(qi, qi->qf_curlist, "");
2700 #ifdef FEAT_WINDOWS
2701     qf_update_buffer(qi, NULL);
2702 #endif
2703 }
2704 
2705     void
2706 qf_history(exarg_T *eap)
2707 {
2708     qf_info_T	*qi = &ql_info;
2709     int		i;
2710 
2711     if (eap->cmdidx == CMD_lhistory)
2712 	qi = GET_LOC_LIST(curwin);
2713     if (qi == NULL || (qi->qf_listcount == 0
2714 				&& qi->qf_lists[qi->qf_curlist].qf_count == 0))
2715 	MSG(_("No entries"));
2716     else
2717 	for (i = 0; i < qi->qf_listcount; ++i)
2718 	    qf_msg(qi, i, i == qi->qf_curlist ? "> " : "  ");
2719 }
2720 
2721 /*
2722  * Free error list "idx".
2723  */
2724     static void
2725 qf_free(qf_info_T *qi, int idx)
2726 {
2727     qfline_T	*qfp;
2728     qfline_T	*qfpnext;
2729     int		stop = FALSE;
2730 
2731     while (qi->qf_lists[idx].qf_count && qi->qf_lists[idx].qf_start != NULL)
2732     {
2733 	qfp = qi->qf_lists[idx].qf_start;
2734 	qfpnext = qfp->qf_next;
2735 	if (qi->qf_lists[idx].qf_title != NULL && !stop)
2736 	{
2737 	    vim_free(qfp->qf_text);
2738 	    stop = (qfp == qfpnext);
2739 	    vim_free(qfp->qf_pattern);
2740 	    vim_free(qfp);
2741 	    if (stop)
2742 		/* Somehow qf_count may have an incorrect value, set it to 1
2743 		 * to avoid crashing when it's wrong.
2744 		 * TODO: Avoid qf_count being incorrect. */
2745 		qi->qf_lists[idx].qf_count = 1;
2746 	}
2747 	qi->qf_lists[idx].qf_start = qfpnext;
2748 	--qi->qf_lists[idx].qf_count;
2749     }
2750     vim_free(qi->qf_lists[idx].qf_title);
2751     qi->qf_lists[idx].qf_title = NULL;
2752     qi->qf_lists[idx].qf_index = 0;
2753 
2754     qf_clean_dir_stack(&qi->qf_dir_stack);
2755     qi->qf_directory = NULL;
2756     qf_clean_dir_stack(&qi->qf_file_stack);
2757     qi->qf_currfile = NULL;
2758 }
2759 
2760 /*
2761  * qf_mark_adjust: adjust marks
2762  */
2763    void
2764 qf_mark_adjust(
2765     win_T	*wp,
2766     linenr_T	line1,
2767     linenr_T	line2,
2768     long	amount,
2769     long	amount_after)
2770 {
2771     int		i;
2772     qfline_T	*qfp;
2773     int		idx;
2774     qf_info_T	*qi = &ql_info;
2775     int		found_one = FALSE;
2776     int		buf_has_flag = wp == NULL ? BUF_HAS_QF_ENTRY : BUF_HAS_LL_ENTRY;
2777 
2778     if (!(curbuf->b_has_qf_entry & buf_has_flag))
2779 	return;
2780     if (wp != NULL)
2781     {
2782 	if (wp->w_llist == NULL)
2783 	    return;
2784 	qi = wp->w_llist;
2785     }
2786 
2787     for (idx = 0; idx < qi->qf_listcount; ++idx)
2788 	if (qi->qf_lists[idx].qf_count)
2789 	    for (i = 0, qfp = qi->qf_lists[idx].qf_start;
2790 		       i < qi->qf_lists[idx].qf_count && qfp != NULL;
2791 		       ++i, qfp = qfp->qf_next)
2792 		if (qfp->qf_fnum == curbuf->b_fnum)
2793 		{
2794 		    found_one = TRUE;
2795 		    if (qfp->qf_lnum >= line1 && qfp->qf_lnum <= line2)
2796 		    {
2797 			if (amount == MAXLNUM)
2798 			    qfp->qf_cleared = TRUE;
2799 			else
2800 			    qfp->qf_lnum += amount;
2801 		    }
2802 		    else if (amount_after && qfp->qf_lnum > line2)
2803 			qfp->qf_lnum += amount_after;
2804 		}
2805 
2806     if (!found_one)
2807 	curbuf->b_has_qf_entry &= ~buf_has_flag;
2808 }
2809 
2810 /*
2811  * Make a nice message out of the error character and the error number:
2812  *  char    number	message
2813  *  e or E    0		" error"
2814  *  w or W    0		" warning"
2815  *  i or I    0		" info"
2816  *  0	      0		""
2817  *  other     0		" c"
2818  *  e or E    n		" error n"
2819  *  w or W    n		" warning n"
2820  *  i or I    n		" info n"
2821  *  0	      n		" error n"
2822  *  other     n		" c n"
2823  *  1	      x		""	:helpgrep
2824  */
2825     static char_u *
2826 qf_types(int c, int nr)
2827 {
2828     static char_u	buf[20];
2829     static char_u	cc[3];
2830     char_u		*p;
2831 
2832     if (c == 'W' || c == 'w')
2833 	p = (char_u *)" warning";
2834     else if (c == 'I' || c == 'i')
2835 	p = (char_u *)" info";
2836     else if (c == 'E' || c == 'e' || (c == 0 && nr > 0))
2837 	p = (char_u *)" error";
2838     else if (c == 0 || c == 1)
2839 	p = (char_u *)"";
2840     else
2841     {
2842 	cc[0] = ' ';
2843 	cc[1] = c;
2844 	cc[2] = NUL;
2845 	p = cc;
2846     }
2847 
2848     if (nr <= 0)
2849 	return p;
2850 
2851     sprintf((char *)buf, "%s %3d", (char *)p, nr);
2852     return buf;
2853 }
2854 
2855 #if defined(FEAT_WINDOWS) || defined(PROTO)
2856 /*
2857  * ":cwindow": open the quickfix window if we have errors to display,
2858  *	       close it if not.
2859  * ":lwindow": open the location list window if we have locations to display,
2860  *	       close it if not.
2861  */
2862     void
2863 ex_cwindow(exarg_T *eap)
2864 {
2865     qf_info_T	*qi = &ql_info;
2866     win_T	*win;
2867 
2868     if (eap->cmdidx == CMD_lwindow)
2869     {
2870 	qi = GET_LOC_LIST(curwin);
2871 	if (qi == NULL)
2872 	    return;
2873     }
2874 
2875     /* Look for an existing quickfix window.  */
2876     win = qf_find_win(qi);
2877 
2878     /*
2879      * If a quickfix window is open but we have no errors to display,
2880      * close the window.  If a quickfix window is not open, then open
2881      * it if we have errors; otherwise, leave it closed.
2882      */
2883     if (qi->qf_lists[qi->qf_curlist].qf_nonevalid
2884 	    || qi->qf_lists[qi->qf_curlist].qf_count == 0
2885 	    || qi->qf_curlist >= qi->qf_listcount)
2886     {
2887 	if (win != NULL)
2888 	    ex_cclose(eap);
2889     }
2890     else if (win == NULL)
2891 	ex_copen(eap);
2892 }
2893 
2894 /*
2895  * ":cclose": close the window showing the list of errors.
2896  * ":lclose": close the window showing the location list
2897  */
2898     void
2899 ex_cclose(exarg_T *eap)
2900 {
2901     win_T	*win = NULL;
2902     qf_info_T	*qi = &ql_info;
2903 
2904     if (eap->cmdidx == CMD_lclose || eap->cmdidx == CMD_lwindow)
2905     {
2906 	qi = GET_LOC_LIST(curwin);
2907 	if (qi == NULL)
2908 	    return;
2909     }
2910 
2911     /* Find existing quickfix window and close it. */
2912     win = qf_find_win(qi);
2913     if (win != NULL)
2914 	win_close(win, FALSE);
2915 }
2916 
2917 /*
2918  * ":copen": open a window that shows the list of errors.
2919  * ":lopen": open a window that shows the location list.
2920  */
2921     void
2922 ex_copen(exarg_T *eap)
2923 {
2924     qf_info_T	*qi = &ql_info;
2925     int		height;
2926     win_T	*win;
2927     tabpage_T	*prevtab = curtab;
2928     buf_T	*qf_buf;
2929     win_T	*oldwin = curwin;
2930 
2931     if (eap->cmdidx == CMD_lopen || eap->cmdidx == CMD_lwindow)
2932     {
2933 	qi = GET_LOC_LIST(curwin);
2934 	if (qi == NULL)
2935 	{
2936 	    EMSG(_(e_loclist));
2937 	    return;
2938 	}
2939     }
2940 
2941     if (eap->addr_count != 0)
2942 	height = eap->line2;
2943     else
2944 	height = QF_WINHEIGHT;
2945 
2946     reset_VIsual_and_resel();			/* stop Visual mode */
2947 #ifdef FEAT_GUI
2948     need_mouse_correct = TRUE;
2949 #endif
2950 
2951     /*
2952      * Find existing quickfix window, or open a new one.
2953      */
2954     win = qf_find_win(qi);
2955 
2956     if (win != NULL && cmdmod.tab == 0)
2957     {
2958 	win_goto(win);
2959 	if (eap->addr_count != 0)
2960 	{
2961 	    if (cmdmod.split & WSP_VERT)
2962 	    {
2963 		if (height != W_WIDTH(win))
2964 		    win_setwidth(height);
2965 	    }
2966 	    else if (height != win->w_height)
2967 		win_setheight(height);
2968 	}
2969     }
2970     else
2971     {
2972 	qf_buf = qf_find_buf(qi);
2973 
2974 	/* The current window becomes the previous window afterwards. */
2975 	win = curwin;
2976 
2977 	if ((eap->cmdidx == CMD_copen || eap->cmdidx == CMD_cwindow)
2978 		&& cmdmod.split == 0)
2979 	    /* Create the new window at the very bottom, except when
2980 	     * :belowright or :aboveleft is used. */
2981 	    win_goto(lastwin);
2982 	if (win_split(height, WSP_BELOW | WSP_NEWLOC) == FAIL)
2983 	    return;		/* not enough room for window */
2984 	RESET_BINDING(curwin);
2985 
2986 	if (eap->cmdidx == CMD_lopen || eap->cmdidx == CMD_lwindow)
2987 	{
2988 	    /*
2989 	     * For the location list window, create a reference to the
2990 	     * location list from the window 'win'.
2991 	     */
2992 	    curwin->w_llist_ref = win->w_llist;
2993 	    win->w_llist->qf_refcount++;
2994 	}
2995 
2996 	if (oldwin != curwin)
2997 	    oldwin = NULL;  /* don't store info when in another window */
2998 	if (qf_buf != NULL)
2999 	    /* Use the existing quickfix buffer */
3000 	    (void)do_ecmd(qf_buf->b_fnum, NULL, NULL, NULL, ECMD_ONE,
3001 					     ECMD_HIDE + ECMD_OLDBUF, oldwin);
3002 	else
3003 	{
3004 	    /* Create a new quickfix buffer */
3005 	    (void)do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, ECMD_HIDE, oldwin);
3006 	    /* switch off 'swapfile' */
3007 	    set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
3008 	    set_option_value((char_u *)"bt", 0L, (char_u *)"quickfix",
3009 								   OPT_LOCAL);
3010 	    set_option_value((char_u *)"bh", 0L, (char_u *)"wipe", OPT_LOCAL);
3011 	    RESET_BINDING(curwin);
3012 #ifdef FEAT_DIFF
3013 	    curwin->w_p_diff = FALSE;
3014 #endif
3015 #ifdef FEAT_FOLDING
3016 	    set_option_value((char_u *)"fdm", 0L, (char_u *)"manual",
3017 								   OPT_LOCAL);
3018 #endif
3019 	}
3020 
3021 	/* Only set the height when still in the same tab page and there is no
3022 	 * window to the side. */
3023 	if (curtab == prevtab && curwin->w_width == Columns)
3024 	    win_setheight(height);
3025 	curwin->w_p_wfh = TRUE;	    /* set 'winfixheight' */
3026 	if (win_valid(win))
3027 	    prevwin = win;
3028     }
3029 
3030     qf_set_title_var(qi);
3031 
3032     /*
3033      * Fill the buffer with the quickfix list.
3034      */
3035     qf_fill_buffer(qi, curbuf, NULL);
3036 
3037     curwin->w_cursor.lnum = qi->qf_lists[qi->qf_curlist].qf_index;
3038     curwin->w_cursor.col = 0;
3039     check_cursor();
3040     update_topline();		/* scroll to show the line */
3041 }
3042 
3043 /*
3044  * Move the cursor in the quickfix window to "lnum".
3045  */
3046     static void
3047 qf_win_goto(win_T *win, linenr_T lnum)
3048 {
3049     win_T	*old_curwin = curwin;
3050 
3051     curwin = win;
3052     curbuf = win->w_buffer;
3053     curwin->w_cursor.lnum = lnum;
3054     curwin->w_cursor.col = 0;
3055 #ifdef FEAT_VIRTUALEDIT
3056     curwin->w_cursor.coladd = 0;
3057 #endif
3058     curwin->w_curswant = 0;
3059     update_topline();		/* scroll to show the line */
3060     redraw_later(VALID);
3061     curwin->w_redr_status = TRUE;	/* update ruler */
3062     curwin = old_curwin;
3063     curbuf = curwin->w_buffer;
3064 }
3065 
3066 /*
3067  * :cbottom/:lbottom commands.
3068  */
3069     void
3070 ex_cbottom(exarg_T *eap UNUSED)
3071 {
3072     qf_info_T	*qi = &ql_info;
3073     win_T	*win;
3074 
3075     if (eap->cmdidx == CMD_lbottom)
3076     {
3077 	qi = GET_LOC_LIST(curwin);
3078 	if (qi == NULL)
3079 	{
3080 	    EMSG(_(e_loclist));
3081 	    return;
3082 	}
3083     }
3084 
3085     win = qf_find_win(qi);
3086     if (win != NULL && win->w_cursor.lnum != win->w_buffer->b_ml.ml_line_count)
3087 	qf_win_goto(win, win->w_buffer->b_ml.ml_line_count);
3088 }
3089 
3090 /*
3091  * Return the number of the current entry (line number in the quickfix
3092  * window).
3093  */
3094      linenr_T
3095 qf_current_entry(win_T *wp)
3096 {
3097     qf_info_T	*qi = &ql_info;
3098 
3099     if (IS_LL_WINDOW(wp))
3100 	/* In the location list window, use the referenced location list */
3101 	qi = wp->w_llist_ref;
3102 
3103     return qi->qf_lists[qi->qf_curlist].qf_index;
3104 }
3105 
3106 /*
3107  * Update the cursor position in the quickfix window to the current error.
3108  * Return TRUE if there is a quickfix window.
3109  */
3110     static int
3111 qf_win_pos_update(
3112     qf_info_T	*qi,
3113     int		old_qf_index)	/* previous qf_index or zero */
3114 {
3115     win_T	*win;
3116     int		qf_index = qi->qf_lists[qi->qf_curlist].qf_index;
3117 
3118     /*
3119      * Put the cursor on the current error in the quickfix window, so that
3120      * it's viewable.
3121      */
3122     win = qf_find_win(qi);
3123     if (win != NULL
3124 	    && qf_index <= win->w_buffer->b_ml.ml_line_count
3125 	    && old_qf_index != qf_index)
3126     {
3127 	if (qf_index > old_qf_index)
3128 	{
3129 	    win->w_redraw_top = old_qf_index;
3130 	    win->w_redraw_bot = qf_index;
3131 	}
3132 	else
3133 	{
3134 	    win->w_redraw_top = qf_index;
3135 	    win->w_redraw_bot = old_qf_index;
3136 	}
3137 	qf_win_goto(win, qf_index);
3138     }
3139     return win != NULL;
3140 }
3141 
3142 /*
3143  * Check whether the given window is displaying the specified quickfix/location
3144  * list buffer
3145  */
3146     static int
3147 is_qf_win(win_T *win, qf_info_T *qi)
3148 {
3149     /*
3150      * A window displaying the quickfix buffer will have the w_llist_ref field
3151      * set to NULL.
3152      * A window displaying a location list buffer will have the w_llist_ref
3153      * pointing to the location list.
3154      */
3155     if (bt_quickfix(win->w_buffer))
3156 	if ((qi == &ql_info && win->w_llist_ref == NULL)
3157 		|| (qi != &ql_info && win->w_llist_ref == qi))
3158 	    return TRUE;
3159 
3160     return FALSE;
3161 }
3162 
3163 /*
3164  * Find a window displaying the quickfix/location list 'qi'
3165  * Searches in only the windows opened in the current tab.
3166  */
3167     static win_T *
3168 qf_find_win(qf_info_T *qi)
3169 {
3170     win_T	*win;
3171 
3172     FOR_ALL_WINDOWS(win)
3173 	if (is_qf_win(win, qi))
3174 	    break;
3175 
3176     return win;
3177 }
3178 
3179 /*
3180  * Find a quickfix buffer.
3181  * Searches in windows opened in all the tabs.
3182  */
3183     static buf_T *
3184 qf_find_buf(qf_info_T *qi)
3185 {
3186     tabpage_T	*tp;
3187     win_T	*win;
3188 
3189     FOR_ALL_TAB_WINDOWS(tp, win)
3190 	if (is_qf_win(win, qi))
3191 	    return win->w_buffer;
3192 
3193     return NULL;
3194 }
3195 
3196 /*
3197  * Update the w:quickfix_title variable in the quickfix/location list window
3198  */
3199     static void
3200 qf_update_win_titlevar(qf_info_T *qi)
3201 {
3202     win_T	*win;
3203     win_T	*curwin_save;
3204 
3205     if ((win = qf_find_win(qi)) != NULL)
3206     {
3207 	curwin_save = curwin;
3208 	curwin = win;
3209 	qf_set_title_var(qi);
3210 	curwin = curwin_save;
3211     }
3212 }
3213 
3214 /*
3215  * Find the quickfix buffer.  If it exists, update the contents.
3216  */
3217     static void
3218 qf_update_buffer(qf_info_T *qi, qfline_T *old_last)
3219 {
3220     buf_T	*buf;
3221     win_T	*win;
3222     aco_save_T	aco;
3223 
3224     /* Check if a buffer for the quickfix list exists.  Update it. */
3225     buf = qf_find_buf(qi);
3226     if (buf != NULL)
3227     {
3228 	linenr_T	old_line_count = buf->b_ml.ml_line_count;
3229 
3230 	if (old_last == NULL)
3231 	    /* set curwin/curbuf to buf and save a few things */
3232 	    aucmd_prepbuf(&aco, buf);
3233 
3234 	qf_update_win_titlevar(qi);
3235 
3236 	qf_fill_buffer(qi, buf, old_last);
3237 
3238 	if (old_last == NULL)
3239 	{
3240 	    (void)qf_win_pos_update(qi, 0);
3241 
3242 	    /* restore curwin/curbuf and a few other things */
3243 	    aucmd_restbuf(&aco);
3244 	}
3245 
3246 	/* Only redraw when added lines are visible.  This avoids flickering
3247 	 * when the added lines are not visible. */
3248 	if ((win = qf_find_win(qi)) != NULL && old_line_count < win->w_botline)
3249 	    redraw_buf_later(buf, NOT_VALID);
3250     }
3251 }
3252 
3253 /*
3254  * Set "w:quickfix_title" if "qi" has a title.
3255  */
3256     static void
3257 qf_set_title_var(qf_info_T *qi)
3258 {
3259     if (qi->qf_lists[qi->qf_curlist].qf_title != NULL)
3260 	set_internal_string_var((char_u *)"w:quickfix_title",
3261 				    qi->qf_lists[qi->qf_curlist].qf_title);
3262 }
3263 
3264 /*
3265  * Fill current buffer with quickfix errors, replacing any previous contents.
3266  * curbuf must be the quickfix buffer!
3267  * If "old_last" is not NULL append the items after this one.
3268  * When "old_last" is NULL then "buf" must equal "curbuf"!  Because
3269  * ml_delete() is used and autocommands will be triggered.
3270  */
3271     static void
3272 qf_fill_buffer(qf_info_T *qi, buf_T *buf, qfline_T *old_last)
3273 {
3274     linenr_T	lnum;
3275     qfline_T	*qfp;
3276     buf_T	*errbuf;
3277     int		len;
3278     int		old_KeyTyped = KeyTyped;
3279 
3280     if (old_last == NULL)
3281     {
3282 	if (buf != curbuf)
3283 	{
3284 	    internal_error("qf_fill_buffer()");
3285 	    return;
3286 	}
3287 
3288 	/* delete all existing lines */
3289 	while ((curbuf->b_ml.ml_flags & ML_EMPTY) == 0)
3290 	    (void)ml_delete((linenr_T)1, FALSE);
3291     }
3292 
3293     /* Check if there is anything to display */
3294     if (qi->qf_curlist < qi->qf_listcount)
3295     {
3296 	/* Add one line for each error */
3297 	if (old_last == NULL)
3298 	{
3299 	    qfp = qi->qf_lists[qi->qf_curlist].qf_start;
3300 	    lnum = 0;
3301 	}
3302 	else
3303 	{
3304 	    qfp = old_last->qf_next;
3305 	    lnum = buf->b_ml.ml_line_count;
3306 	}
3307 	while (lnum < qi->qf_lists[qi->qf_curlist].qf_count)
3308 	{
3309 	    if (qfp->qf_fnum != 0
3310 		    && (errbuf = buflist_findnr(qfp->qf_fnum)) != NULL
3311 		    && errbuf->b_fname != NULL)
3312 	    {
3313 		if (qfp->qf_type == 1)	/* :helpgrep */
3314 		    STRCPY(IObuff, gettail(errbuf->b_fname));
3315 		else
3316 		    STRCPY(IObuff, errbuf->b_fname);
3317 		len = (int)STRLEN(IObuff);
3318 	    }
3319 	    else
3320 		len = 0;
3321 	    IObuff[len++] = '|';
3322 
3323 	    if (qfp->qf_lnum > 0)
3324 	    {
3325 		sprintf((char *)IObuff + len, "%ld", qfp->qf_lnum);
3326 		len += (int)STRLEN(IObuff + len);
3327 
3328 		if (qfp->qf_col > 0)
3329 		{
3330 		    sprintf((char *)IObuff + len, " col %d", qfp->qf_col);
3331 		    len += (int)STRLEN(IObuff + len);
3332 		}
3333 
3334 		sprintf((char *)IObuff + len, "%s",
3335 				  (char *)qf_types(qfp->qf_type, qfp->qf_nr));
3336 		len += (int)STRLEN(IObuff + len);
3337 	    }
3338 	    else if (qfp->qf_pattern != NULL)
3339 	    {
3340 		qf_fmt_text(qfp->qf_pattern, IObuff + len, IOSIZE - len);
3341 		len += (int)STRLEN(IObuff + len);
3342 	    }
3343 	    IObuff[len++] = '|';
3344 	    IObuff[len++] = ' ';
3345 
3346 	    /* Remove newlines and leading whitespace from the text.
3347 	     * For an unrecognized line keep the indent, the compiler may
3348 	     * mark a word with ^^^^. */
3349 	    qf_fmt_text(len > 3 ? skipwhite(qfp->qf_text) : qfp->qf_text,
3350 						  IObuff + len, IOSIZE - len);
3351 
3352 	    if (ml_append_buf(buf, lnum, IObuff,
3353 				  (colnr_T)STRLEN(IObuff) + 1, FALSE) == FAIL)
3354 		break;
3355 	    ++lnum;
3356 	    qfp = qfp->qf_next;
3357 	    if (qfp == NULL)
3358 		break;
3359 	}
3360 
3361 	if (old_last == NULL)
3362 	    /* Delete the empty line which is now at the end */
3363 	    (void)ml_delete(lnum + 1, FALSE);
3364     }
3365 
3366     /* correct cursor position */
3367     check_lnums(TRUE);
3368 
3369     if (old_last == NULL)
3370     {
3371 	/* Set the 'filetype' to "qf" each time after filling the buffer.
3372 	 * This resembles reading a file into a buffer, it's more logical when
3373 	 * using autocommands. */
3374 	set_option_value((char_u *)"ft", 0L, (char_u *)"qf", OPT_LOCAL);
3375 	curbuf->b_p_ma = FALSE;
3376 
3377 #ifdef FEAT_AUTOCMD
3378 	keep_filetype = TRUE;		/* don't detect 'filetype' */
3379 	apply_autocmds(EVENT_BUFREADPOST, (char_u *)"quickfix", NULL,
3380 							       FALSE, curbuf);
3381 	apply_autocmds(EVENT_BUFWINENTER, (char_u *)"quickfix", NULL,
3382 							       FALSE, curbuf);
3383 	keep_filetype = FALSE;
3384 #endif
3385 	/* make sure it will be redrawn */
3386 	redraw_curbuf_later(NOT_VALID);
3387     }
3388 
3389     /* Restore KeyTyped, setting 'filetype' may reset it. */
3390     KeyTyped = old_KeyTyped;
3391 }
3392 
3393 #endif /* FEAT_WINDOWS */
3394 
3395 /*
3396  * Return TRUE if "buf" is the quickfix buffer.
3397  */
3398     int
3399 bt_quickfix(buf_T *buf)
3400 {
3401     return buf != NULL && buf->b_p_bt[0] == 'q';
3402 }
3403 
3404 /*
3405  * Return TRUE if "buf" is a "nofile" or "acwrite" buffer.
3406  * This means the buffer name is not a file name.
3407  */
3408     int
3409 bt_nofile(buf_T *buf)
3410 {
3411     return buf != NULL && ((buf->b_p_bt[0] == 'n' && buf->b_p_bt[2] == 'f')
3412 	    || buf->b_p_bt[0] == 'a');
3413 }
3414 
3415 /*
3416  * Return TRUE if "buf" is a "nowrite" or "nofile" buffer.
3417  */
3418     int
3419 bt_dontwrite(buf_T *buf)
3420 {
3421     return buf != NULL && buf->b_p_bt[0] == 'n';
3422 }
3423 
3424     int
3425 bt_dontwrite_msg(buf_T *buf)
3426 {
3427     if (bt_dontwrite(buf))
3428     {
3429 	EMSG(_("E382: Cannot write, 'buftype' option is set"));
3430 	return TRUE;
3431     }
3432     return FALSE;
3433 }
3434 
3435 /*
3436  * Return TRUE if the buffer should be hidden, according to 'hidden', ":hide"
3437  * and 'bufhidden'.
3438  */
3439     int
3440 buf_hide(buf_T *buf)
3441 {
3442     /* 'bufhidden' overrules 'hidden' and ":hide", check it first */
3443     switch (buf->b_p_bh[0])
3444     {
3445 	case 'u':		    /* "unload" */
3446 	case 'w':		    /* "wipe" */
3447 	case 'd': return FALSE;	    /* "delete" */
3448 	case 'h': return TRUE;	    /* "hide" */
3449     }
3450     return (p_hid || cmdmod.hide);
3451 }
3452 
3453 /*
3454  * Return TRUE when using ":vimgrep" for ":grep".
3455  */
3456     int
3457 grep_internal(cmdidx_T cmdidx)
3458 {
3459     return ((cmdidx == CMD_grep
3460 		|| cmdidx == CMD_lgrep
3461 		|| cmdidx == CMD_grepadd
3462 		|| cmdidx == CMD_lgrepadd)
3463 	    && STRCMP("internal",
3464 			*curbuf->b_p_gp == NUL ? p_gp : curbuf->b_p_gp) == 0);
3465 }
3466 
3467 /*
3468  * Used for ":make", ":lmake", ":grep", ":lgrep", ":grepadd", and ":lgrepadd"
3469  */
3470     void
3471 ex_make(exarg_T *eap)
3472 {
3473     char_u	*fname;
3474     char_u	*cmd;
3475     char_u	*enc = NULL;
3476     unsigned	len;
3477     win_T	*wp = NULL;
3478     qf_info_T	*qi = &ql_info;
3479     int		res;
3480 #ifdef FEAT_AUTOCMD
3481     char_u	*au_name = NULL;
3482 
3483     /* Redirect ":grep" to ":vimgrep" if 'grepprg' is "internal". */
3484     if (grep_internal(eap->cmdidx))
3485     {
3486 	ex_vimgrep(eap);
3487 	return;
3488     }
3489 
3490     switch (eap->cmdidx)
3491     {
3492 	case CMD_make:	    au_name = (char_u *)"make"; break;
3493 	case CMD_lmake:	    au_name = (char_u *)"lmake"; break;
3494 	case CMD_grep:	    au_name = (char_u *)"grep"; break;
3495 	case CMD_lgrep:	    au_name = (char_u *)"lgrep"; break;
3496 	case CMD_grepadd:   au_name = (char_u *)"grepadd"; break;
3497 	case CMD_lgrepadd:  au_name = (char_u *)"lgrepadd"; break;
3498 	default: break;
3499     }
3500     if (au_name != NULL && apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
3501 					       curbuf->b_fname, TRUE, curbuf))
3502     {
3503 # ifdef FEAT_EVAL
3504 	if (aborting())
3505 	    return;
3506 # endif
3507     }
3508 #endif
3509 #ifdef FEAT_MBYTE
3510     enc = (*curbuf->b_p_menc != NUL) ? curbuf->b_p_menc : p_menc;
3511 #endif
3512 
3513     if (eap->cmdidx == CMD_lmake || eap->cmdidx == CMD_lgrep
3514 	|| eap->cmdidx == CMD_lgrepadd)
3515 	wp = curwin;
3516 
3517     autowrite_all();
3518     fname = get_mef_name();
3519     if (fname == NULL)
3520 	return;
3521     mch_remove(fname);	    /* in case it's not unique */
3522 
3523     /*
3524      * If 'shellpipe' empty: don't redirect to 'errorfile'.
3525      */
3526     len = (unsigned)STRLEN(p_shq) * 2 + (unsigned)STRLEN(eap->arg) + 1;
3527     if (*p_sp != NUL)
3528 	len += (unsigned)STRLEN(p_sp) + (unsigned)STRLEN(fname) + 3;
3529     cmd = alloc(len);
3530     if (cmd == NULL)
3531 	return;
3532     sprintf((char *)cmd, "%s%s%s", (char *)p_shq, (char *)eap->arg,
3533 							       (char *)p_shq);
3534     if (*p_sp != NUL)
3535 	append_redir(cmd, len, p_sp, fname);
3536     /*
3537      * Output a newline if there's something else than the :make command that
3538      * was typed (in which case the cursor is in column 0).
3539      */
3540     if (msg_col == 0)
3541 	msg_didout = FALSE;
3542     msg_start();
3543     MSG_PUTS(":!");
3544     msg_outtrans(cmd);		/* show what we are doing */
3545 
3546     /* let the shell know if we are redirecting output or not */
3547     do_shell(cmd, *p_sp != NUL ? SHELL_DOOUT : 0);
3548 
3549 #ifdef AMIGA
3550     out_flush();
3551 		/* read window status report and redraw before message */
3552     (void)char_avail();
3553 #endif
3554 
3555     res = qf_init(wp, fname, (eap->cmdidx != CMD_make
3556 			    && eap->cmdidx != CMD_lmake) ? p_gefm : p_efm,
3557 					   (eap->cmdidx != CMD_grepadd
3558 					    && eap->cmdidx != CMD_lgrepadd),
3559 					   *eap->cmdlinep, enc);
3560     if (wp != NULL)
3561 	qi = GET_LOC_LIST(wp);
3562 #ifdef FEAT_AUTOCMD
3563     if (au_name != NULL)
3564     {
3565 	apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
3566 					       curbuf->b_fname, TRUE, curbuf);
3567 	if (qi->qf_curlist < qi->qf_listcount)
3568 	    res = qi->qf_lists[qi->qf_curlist].qf_count;
3569 	else
3570 	    res = 0;
3571     }
3572 #endif
3573     if (res > 0 && !eap->forceit)
3574 	qf_jump(qi, 0, 0, FALSE);		/* display first error */
3575 
3576     mch_remove(fname);
3577     vim_free(fname);
3578     vim_free(cmd);
3579 }
3580 
3581 /*
3582  * Return the name for the errorfile, in allocated memory.
3583  * Find a new unique name when 'makeef' contains "##".
3584  * Returns NULL for error.
3585  */
3586     static char_u *
3587 get_mef_name(void)
3588 {
3589     char_u	*p;
3590     char_u	*name;
3591     static int	start = -1;
3592     static int	off = 0;
3593 #ifdef HAVE_LSTAT
3594     stat_T	sb;
3595 #endif
3596 
3597     if (*p_mef == NUL)
3598     {
3599 	name = vim_tempname('e', FALSE);
3600 	if (name == NULL)
3601 	    EMSG(_(e_notmp));
3602 	return name;
3603     }
3604 
3605     for (p = p_mef; *p; ++p)
3606 	if (p[0] == '#' && p[1] == '#')
3607 	    break;
3608 
3609     if (*p == NUL)
3610 	return vim_strsave(p_mef);
3611 
3612     /* Keep trying until the name doesn't exist yet. */
3613     for (;;)
3614     {
3615 	if (start == -1)
3616 	    start = mch_get_pid();
3617 	else
3618 	    off += 19;
3619 
3620 	name = alloc((unsigned)STRLEN(p_mef) + 30);
3621 	if (name == NULL)
3622 	    break;
3623 	STRCPY(name, p_mef);
3624 	sprintf((char *)name + (p - p_mef), "%d%d", start, off);
3625 	STRCAT(name, p + 2);
3626 	if (mch_getperm(name) < 0
3627 #ifdef HAVE_LSTAT
3628 		    /* Don't accept a symbolic link, it's a security risk. */
3629 		    && mch_lstat((char *)name, &sb) < 0
3630 #endif
3631 		)
3632 	    break;
3633 	vim_free(name);
3634     }
3635     return name;
3636 }
3637 
3638 /*
3639  * Returns the number of valid entries in the current quickfix/location list.
3640  */
3641     int
3642 qf_get_size(exarg_T *eap)
3643 {
3644     qf_info_T	*qi = &ql_info;
3645     qfline_T	*qfp;
3646     int		i, sz = 0;
3647     int		prev_fnum = 0;
3648 
3649     if (eap->cmdidx == CMD_ldo || eap->cmdidx == CMD_lfdo)
3650     {
3651 	/* Location list */
3652 	qi = GET_LOC_LIST(curwin);
3653 	if (qi == NULL)
3654 	    return 0;
3655     }
3656 
3657     for (i = 0, qfp = qi->qf_lists[qi->qf_curlist].qf_start;
3658 	    i < qi->qf_lists[qi->qf_curlist].qf_count && qfp != NULL;
3659 	    ++i, qfp = qfp->qf_next)
3660     {
3661 	if (qfp->qf_valid)
3662 	{
3663 	    if (eap->cmdidx == CMD_cdo || eap->cmdidx == CMD_ldo)
3664 		sz++;	/* Count all valid entries */
3665 	    else if (qfp->qf_fnum > 0 && qfp->qf_fnum != prev_fnum)
3666 	    {
3667 		/* Count the number of files */
3668 		sz++;
3669 		prev_fnum = qfp->qf_fnum;
3670 	    }
3671 	}
3672     }
3673 
3674     return sz;
3675 }
3676 
3677 /*
3678  * Returns the current index of the quickfix/location list.
3679  * Returns 0 if there is an error.
3680  */
3681     int
3682 qf_get_cur_idx(exarg_T *eap)
3683 {
3684     qf_info_T	*qi = &ql_info;
3685 
3686     if (eap->cmdidx == CMD_ldo || eap->cmdidx == CMD_lfdo)
3687     {
3688 	/* Location list */
3689 	qi = GET_LOC_LIST(curwin);
3690 	if (qi == NULL)
3691 	    return 0;
3692     }
3693 
3694     return qi->qf_lists[qi->qf_curlist].qf_index;
3695 }
3696 
3697 /*
3698  * Returns the current index in the quickfix/location list (counting only valid
3699  * entries). If no valid entries are in the list, then returns 1.
3700  */
3701     int
3702 qf_get_cur_valid_idx(exarg_T *eap)
3703 {
3704     qf_info_T	*qi = &ql_info;
3705     qf_list_T	*qfl;
3706     qfline_T	*qfp;
3707     int		i, eidx = 0;
3708     int		prev_fnum = 0;
3709 
3710     if (eap->cmdidx == CMD_ldo || eap->cmdidx == CMD_lfdo)
3711     {
3712 	/* Location list */
3713 	qi = GET_LOC_LIST(curwin);
3714 	if (qi == NULL)
3715 	    return 1;
3716     }
3717 
3718     qfl = &qi->qf_lists[qi->qf_curlist];
3719     qfp = qfl->qf_start;
3720 
3721     /* check if the list has valid errors */
3722     if (qfl->qf_count <= 0 || qfl->qf_nonevalid)
3723 	return 1;
3724 
3725     for (i = 1; i <= qfl->qf_index && qfp!= NULL; i++, qfp = qfp->qf_next)
3726     {
3727 	if (qfp->qf_valid)
3728 	{
3729 	    if (eap->cmdidx == CMD_cfdo || eap->cmdidx == CMD_lfdo)
3730 	    {
3731 		if (qfp->qf_fnum > 0 && qfp->qf_fnum != prev_fnum)
3732 		{
3733 		    /* Count the number of files */
3734 		    eidx++;
3735 		    prev_fnum = qfp->qf_fnum;
3736 		}
3737 	    }
3738 	    else
3739 		eidx++;
3740 	}
3741     }
3742 
3743     return eidx ? eidx : 1;
3744 }
3745 
3746 /*
3747  * Get the 'n'th valid error entry in the quickfix or location list.
3748  * Used by :cdo, :ldo, :cfdo and :lfdo commands.
3749  * For :cdo and :ldo returns the 'n'th valid error entry.
3750  * For :cfdo and :lfdo returns the 'n'th valid file entry.
3751  */
3752     static int
3753 qf_get_nth_valid_entry(qf_info_T *qi, int n, int fdo)
3754 {
3755     qf_list_T	*qfl = &qi->qf_lists[qi->qf_curlist];
3756     qfline_T	*qfp = qfl->qf_start;
3757     int		i, eidx;
3758     int		prev_fnum = 0;
3759 
3760     /* check if the list has valid errors */
3761     if (qfl->qf_count <= 0 || qfl->qf_nonevalid)
3762 	return 1;
3763 
3764     for (i = 1, eidx = 0; i <= qfl->qf_count && qfp != NULL;
3765 	    i++, qfp = qfp->qf_next)
3766     {
3767 	if (qfp->qf_valid)
3768 	{
3769 	    if (fdo)
3770 	    {
3771 		if (qfp->qf_fnum > 0 && qfp->qf_fnum != prev_fnum)
3772 		{
3773 		    /* Count the number of files */
3774 		    eidx++;
3775 		    prev_fnum = qfp->qf_fnum;
3776 		}
3777 	    }
3778 	    else
3779 		eidx++;
3780 	}
3781 
3782 	if (eidx == n)
3783 	    break;
3784     }
3785 
3786     if (i <= qfl->qf_count)
3787 	return i;
3788     else
3789 	return 1;
3790 }
3791 
3792 /*
3793  * ":cc", ":crewind", ":cfirst" and ":clast".
3794  * ":ll", ":lrewind", ":lfirst" and ":llast".
3795  * ":cdo", ":ldo", ":cfdo" and ":lfdo"
3796  */
3797     void
3798 ex_cc(exarg_T *eap)
3799 {
3800     qf_info_T	*qi = &ql_info;
3801     int		errornr;
3802 
3803     if (eap->cmdidx == CMD_ll
3804 	    || eap->cmdidx == CMD_lrewind
3805 	    || eap->cmdidx == CMD_lfirst
3806 	    || eap->cmdidx == CMD_llast
3807 	    || eap->cmdidx == CMD_ldo
3808 	    || eap->cmdidx == CMD_lfdo)
3809     {
3810 	qi = GET_LOC_LIST(curwin);
3811 	if (qi == NULL)
3812 	{
3813 	    EMSG(_(e_loclist));
3814 	    return;
3815 	}
3816     }
3817 
3818     if (eap->addr_count > 0)
3819 	errornr = (int)eap->line2;
3820     else
3821     {
3822 	if (eap->cmdidx == CMD_cc || eap->cmdidx == CMD_ll)
3823 	    errornr = 0;
3824 	else if (eap->cmdidx == CMD_crewind || eap->cmdidx == CMD_lrewind
3825 		|| eap->cmdidx == CMD_cfirst || eap->cmdidx == CMD_lfirst)
3826 	    errornr = 1;
3827 	else
3828 	    errornr = 32767;
3829     }
3830 
3831     /* For cdo and ldo commands, jump to the nth valid error.
3832      * For cfdo and lfdo commands, jump to the nth valid file entry.
3833      */
3834     if (eap->cmdidx == CMD_cdo || eap->cmdidx == CMD_ldo ||
3835 	    eap->cmdidx == CMD_cfdo || eap->cmdidx == CMD_lfdo)
3836 	errornr = qf_get_nth_valid_entry(qi,
3837 		eap->addr_count > 0 ? (int)eap->line1 : 1,
3838 		eap->cmdidx == CMD_cfdo || eap->cmdidx == CMD_lfdo);
3839 
3840     qf_jump(qi, 0, errornr, eap->forceit);
3841 }
3842 
3843 /*
3844  * ":cnext", ":cnfile", ":cNext" and ":cprevious".
3845  * ":lnext", ":lNext", ":lprevious", ":lnfile", ":lNfile" and ":lpfile".
3846  * Also, used by ":cdo", ":ldo", ":cfdo" and ":lfdo" commands.
3847  */
3848     void
3849 ex_cnext(exarg_T *eap)
3850 {
3851     qf_info_T	*qi = &ql_info;
3852     int		errornr;
3853 
3854     if (eap->cmdidx == CMD_lnext
3855 	    || eap->cmdidx == CMD_lNext
3856 	    || eap->cmdidx == CMD_lprevious
3857 	    || eap->cmdidx == CMD_lnfile
3858 	    || eap->cmdidx == CMD_lNfile
3859 	    || eap->cmdidx == CMD_lpfile
3860 	    || eap->cmdidx == CMD_ldo
3861 	    || eap->cmdidx == CMD_lfdo)
3862     {
3863 	qi = GET_LOC_LIST(curwin);
3864 	if (qi == NULL)
3865 	{
3866 	    EMSG(_(e_loclist));
3867 	    return;
3868 	}
3869     }
3870 
3871     if (eap->addr_count > 0 &&
3872 	    (eap->cmdidx != CMD_cdo && eap->cmdidx != CMD_ldo &&
3873 	     eap->cmdidx != CMD_cfdo && eap->cmdidx != CMD_lfdo))
3874 	errornr = (int)eap->line2;
3875     else
3876 	errornr = 1;
3877 
3878     qf_jump(qi, (eap->cmdidx == CMD_cnext || eap->cmdidx == CMD_lnext
3879 		|| eap->cmdidx == CMD_cdo || eap->cmdidx == CMD_ldo)
3880 	    ? FORWARD
3881 	    : (eap->cmdidx == CMD_cnfile || eap->cmdidx == CMD_lnfile
3882 		|| eap->cmdidx == CMD_cfdo || eap->cmdidx == CMD_lfdo)
3883 		? FORWARD_FILE
3884 		: (eap->cmdidx == CMD_cpfile || eap->cmdidx == CMD_lpfile
3885 		   || eap->cmdidx == CMD_cNfile || eap->cmdidx == CMD_lNfile)
3886 		    ? BACKWARD_FILE
3887 		    : BACKWARD,
3888 	    errornr, eap->forceit);
3889 }
3890 
3891 /*
3892  * ":cfile"/":cgetfile"/":caddfile" commands.
3893  * ":lfile"/":lgetfile"/":laddfile" commands.
3894  */
3895     void
3896 ex_cfile(exarg_T *eap)
3897 {
3898     char_u	*enc = NULL;
3899     win_T	*wp = NULL;
3900     qf_info_T	*qi = &ql_info;
3901 #ifdef FEAT_AUTOCMD
3902     char_u	*au_name = NULL;
3903 #endif
3904 
3905     if (eap->cmdidx == CMD_lfile || eap->cmdidx == CMD_lgetfile
3906 					       || eap->cmdidx == CMD_laddfile)
3907 	wp = curwin;
3908 
3909 #ifdef FEAT_AUTOCMD
3910     switch (eap->cmdidx)
3911     {
3912 	case CMD_cfile:	    au_name = (char_u *)"cfile"; break;
3913 	case CMD_cgetfile:  au_name = (char_u *)"cgetfile"; break;
3914 	case CMD_caddfile:  au_name = (char_u *)"caddfile"; break;
3915 	case CMD_lfile:	    au_name = (char_u *)"lfile"; break;
3916 	case CMD_lgetfile:  au_name = (char_u *)"lgetfile"; break;
3917 	case CMD_laddfile:  au_name = (char_u *)"laddfile"; break;
3918 	default: break;
3919     }
3920     if (au_name != NULL)
3921 	apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name, NULL, FALSE, curbuf);
3922 #endif
3923 #ifdef FEAT_MBYTE
3924     enc = (*curbuf->b_p_menc != NUL) ? curbuf->b_p_menc : p_menc;
3925 #endif
3926 #ifdef FEAT_BROWSE
3927     if (cmdmod.browse)
3928     {
3929 	char_u *browse_file = do_browse(0, (char_u *)_("Error file"), eap->arg,
3930 				   NULL, NULL, BROWSE_FILTER_ALL_FILES, NULL);
3931 	if (browse_file == NULL)
3932 	    return;
3933 	set_string_option_direct((char_u *)"ef", -1, browse_file, OPT_FREE, 0);
3934 	vim_free(browse_file);
3935     }
3936     else
3937 #endif
3938     if (*eap->arg != NUL)
3939 	set_string_option_direct((char_u *)"ef", -1, eap->arg, OPT_FREE, 0);
3940 
3941     /*
3942      * This function is used by the :cfile, :cgetfile and :caddfile
3943      * commands.
3944      * :cfile always creates a new quickfix list and jumps to the
3945      * first error.
3946      * :cgetfile creates a new quickfix list but doesn't jump to the
3947      * first error.
3948      * :caddfile adds to an existing quickfix list. If there is no
3949      * quickfix list then a new list is created.
3950      */
3951     if (qf_init(wp, p_ef, p_efm, (eap->cmdidx != CMD_caddfile
3952 				  && eap->cmdidx != CMD_laddfile),
3953 						       *eap->cmdlinep, enc) > 0
3954 				  && (eap->cmdidx == CMD_cfile
3955 					     || eap->cmdidx == CMD_lfile))
3956     {
3957 #ifdef FEAT_AUTOCMD
3958 	if (au_name != NULL)
3959 	    apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name, NULL, FALSE, curbuf);
3960 #endif
3961 	if (wp != NULL)
3962 	    qi = GET_LOC_LIST(wp);
3963 	qf_jump(qi, 0, 0, eap->forceit);	/* display first error */
3964     }
3965 
3966     else
3967     {
3968 #ifdef FEAT_AUTOCMD
3969 	if (au_name != NULL)
3970 	    apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name, NULL, FALSE, curbuf);
3971 #endif
3972     }
3973 }
3974 
3975 /*
3976  * ":vimgrep {pattern} file(s)"
3977  * ":vimgrepadd {pattern} file(s)"
3978  * ":lvimgrep {pattern} file(s)"
3979  * ":lvimgrepadd {pattern} file(s)"
3980  */
3981     void
3982 ex_vimgrep(exarg_T *eap)
3983 {
3984     regmmatch_T	regmatch;
3985     int		fcount;
3986     char_u	**fnames;
3987     char_u	*fname;
3988     char_u	*title;
3989     char_u	*s;
3990     char_u	*p;
3991     int		fi;
3992     qf_info_T	*qi = &ql_info;
3993 #ifdef FEAT_AUTOCMD
3994     qfline_T	*cur_qf_start;
3995 #endif
3996     long	lnum;
3997     buf_T	*buf;
3998     int		duplicate_name = FALSE;
3999     int		using_dummy;
4000     int		redraw_for_dummy = FALSE;
4001     int		found_match;
4002     buf_T	*first_match_buf = NULL;
4003     time_t	seconds = 0;
4004     int		save_mls;
4005 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
4006     char_u	*save_ei = NULL;
4007 #endif
4008     aco_save_T	aco;
4009     int		flags = 0;
4010     colnr_T	col;
4011     long	tomatch;
4012     char_u	*dirname_start = NULL;
4013     char_u	*dirname_now = NULL;
4014     char_u	*target_dir = NULL;
4015 #ifdef FEAT_AUTOCMD
4016     char_u	*au_name =  NULL;
4017 
4018     switch (eap->cmdidx)
4019     {
4020 	case CMD_vimgrep:     au_name = (char_u *)"vimgrep"; break;
4021 	case CMD_lvimgrep:    au_name = (char_u *)"lvimgrep"; break;
4022 	case CMD_vimgrepadd:  au_name = (char_u *)"vimgrepadd"; break;
4023 	case CMD_lvimgrepadd: au_name = (char_u *)"lvimgrepadd"; break;
4024 	case CMD_grep:	      au_name = (char_u *)"grep"; break;
4025 	case CMD_lgrep:	      au_name = (char_u *)"lgrep"; break;
4026 	case CMD_grepadd:     au_name = (char_u *)"grepadd"; break;
4027 	case CMD_lgrepadd:    au_name = (char_u *)"lgrepadd"; break;
4028 	default: break;
4029     }
4030     if (au_name != NULL && apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
4031 					       curbuf->b_fname, TRUE, curbuf))
4032     {
4033 # ifdef FEAT_EVAL
4034 	if (aborting())
4035 	    return;
4036 # endif
4037     }
4038 #endif
4039 
4040     if (eap->cmdidx == CMD_lgrep
4041 	    || eap->cmdidx == CMD_lvimgrep
4042 	    || eap->cmdidx == CMD_lgrepadd
4043 	    || eap->cmdidx == CMD_lvimgrepadd)
4044     {
4045 	qi = ll_get_or_alloc_list(curwin);
4046 	if (qi == NULL)
4047 	    return;
4048     }
4049 
4050     if (eap->addr_count > 0)
4051 	tomatch = eap->line2;
4052     else
4053 	tomatch = MAXLNUM;
4054 
4055     /* Get the search pattern: either white-separated or enclosed in // */
4056     regmatch.regprog = NULL;
4057     title = vim_strsave(*eap->cmdlinep);
4058     p = skip_vimgrep_pat(eap->arg, &s, &flags);
4059     if (p == NULL)
4060     {
4061 	EMSG(_(e_invalpat));
4062 	goto theend;
4063     }
4064 
4065     if (s != NULL && *s == NUL)
4066     {
4067 	/* Pattern is empty, use last search pattern. */
4068 	if (last_search_pat() == NULL)
4069 	{
4070 	    EMSG(_(e_noprevre));
4071 	    goto theend;
4072 	}
4073 	regmatch.regprog = vim_regcomp(last_search_pat(), RE_MAGIC);
4074     }
4075     else
4076 	regmatch.regprog = vim_regcomp(s, RE_MAGIC);
4077 
4078     if (regmatch.regprog == NULL)
4079 	goto theend;
4080     regmatch.rmm_ic = p_ic;
4081     regmatch.rmm_maxcol = 0;
4082 
4083     p = skipwhite(p);
4084     if (*p == NUL)
4085     {
4086 	EMSG(_("E683: File name missing or invalid pattern"));
4087 	goto theend;
4088     }
4089 
4090     if ((eap->cmdidx != CMD_grepadd && eap->cmdidx != CMD_lgrepadd &&
4091 	 eap->cmdidx != CMD_vimgrepadd && eap->cmdidx != CMD_lvimgrepadd)
4092 					|| qi->qf_curlist == qi->qf_listcount)
4093 	/* make place for a new list */
4094 	qf_new_list(qi, title != NULL ? title : *eap->cmdlinep);
4095 
4096     /* parse the list of arguments */
4097     if (get_arglist_exp(p, &fcount, &fnames, TRUE) == FAIL)
4098 	goto theend;
4099     if (fcount == 0)
4100     {
4101 	EMSG(_(e_nomatch));
4102 	goto theend;
4103     }
4104 
4105     dirname_start = alloc_id(MAXPATHL, aid_qf_dirname_start);
4106     dirname_now = alloc_id(MAXPATHL, aid_qf_dirname_now);
4107     if (dirname_start == NULL || dirname_now == NULL)
4108     {
4109 	FreeWild(fcount, fnames);
4110 	goto theend;
4111     }
4112 
4113     /* Remember the current directory, because a BufRead autocommand that does
4114      * ":lcd %:p:h" changes the meaning of short path names. */
4115     mch_dirname(dirname_start, MAXPATHL);
4116 
4117 #ifdef FEAT_AUTOCMD
4118      /* Remember the value of qf_start, so that we can check for autocommands
4119       * changing the current quickfix list. */
4120     cur_qf_start = qi->qf_lists[qi->qf_curlist].qf_start;
4121 #endif
4122 
4123     seconds = (time_t)0;
4124     for (fi = 0; fi < fcount && !got_int && tomatch > 0; ++fi)
4125     {
4126 	fname = shorten_fname1(fnames[fi]);
4127 	if (time(NULL) > seconds)
4128 	{
4129 	    /* Display the file name every second or so, show the user we are
4130 	     * working on it. */
4131 	    seconds = time(NULL);
4132 	    msg_start();
4133 	    p = msg_strtrunc(fname, TRUE);
4134 	    if (p == NULL)
4135 		msg_outtrans(fname);
4136 	    else
4137 	    {
4138 		msg_outtrans(p);
4139 		vim_free(p);
4140 	    }
4141 	    msg_clr_eos();
4142 	    msg_didout = FALSE;	    /* overwrite this message */
4143 	    msg_nowait = TRUE;	    /* don't wait for this message */
4144 	    msg_col = 0;
4145 	    out_flush();
4146 	}
4147 
4148 	buf = buflist_findname_exp(fnames[fi]);
4149 	if (buf == NULL || buf->b_ml.ml_mfp == NULL)
4150 	{
4151 	    /* Remember that a buffer with this name already exists. */
4152 	    duplicate_name = (buf != NULL);
4153 	    using_dummy = TRUE;
4154 	    redraw_for_dummy = TRUE;
4155 
4156 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
4157 	    /* Don't do Filetype autocommands to avoid loading syntax and
4158 	     * indent scripts, a great speed improvement. */
4159 	    save_ei = au_event_disable(",Filetype");
4160 #endif
4161 	    /* Don't use modelines here, it's useless. */
4162 	    save_mls = p_mls;
4163 	    p_mls = 0;
4164 
4165 	    /* Load file into a buffer, so that 'fileencoding' is detected,
4166 	     * autocommands applied, etc. */
4167 	    buf = load_dummy_buffer(fname, dirname_start, dirname_now);
4168 
4169 	    p_mls = save_mls;
4170 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
4171 	    au_event_restore(save_ei);
4172 #endif
4173 	}
4174 	else
4175 	    /* Use existing, loaded buffer. */
4176 	    using_dummy = FALSE;
4177 
4178 #ifdef FEAT_AUTOCMD
4179 	if (cur_qf_start != qi->qf_lists[qi->qf_curlist].qf_start)
4180 	{
4181 	    int idx;
4182 
4183 	    /* Autocommands changed the quickfix list.  Find the one we were
4184 	     * using and restore it. */
4185 	    for (idx = 0; idx < LISTCOUNT; ++idx)
4186 		if (cur_qf_start == qi->qf_lists[idx].qf_start)
4187 		{
4188 		    qi->qf_curlist = idx;
4189 		    break;
4190 		}
4191 	    if (idx == LISTCOUNT)
4192 	    {
4193 		/* List cannot be found, create a new one. */
4194 		qf_new_list(qi, *eap->cmdlinep);
4195 		cur_qf_start = qi->qf_lists[qi->qf_curlist].qf_start;
4196 	    }
4197 	}
4198 #endif
4199 
4200 	if (buf == NULL)
4201 	{
4202 	    if (!got_int)
4203 		smsg((char_u *)_("Cannot open file \"%s\""), fname);
4204 	}
4205 	else
4206 	{
4207 	    /* Try for a match in all lines of the buffer.
4208 	     * For ":1vimgrep" look for first match only. */
4209 	    found_match = FALSE;
4210 	    for (lnum = 1; lnum <= buf->b_ml.ml_line_count && tomatch > 0;
4211 								       ++lnum)
4212 	    {
4213 		col = 0;
4214 		while (vim_regexec_multi(&regmatch, curwin, buf, lnum,
4215 							       col, NULL) > 0)
4216 		{
4217 		    /* Pass the buffer number so that it gets used even for a
4218 		     * dummy buffer, unless duplicate_name is set, then the
4219 		     * buffer will be wiped out below. */
4220 		    if (qf_add_entry(qi,
4221 				NULL,       /* dir */
4222 				fname,
4223 				duplicate_name ? 0 : buf->b_fnum,
4224 				ml_get_buf(buf,
4225 				     regmatch.startpos[0].lnum + lnum, FALSE),
4226 				regmatch.startpos[0].lnum + lnum,
4227 				regmatch.startpos[0].col + 1,
4228 				FALSE,      /* vis_col */
4229 				NULL,	    /* search pattern */
4230 				0,	    /* nr */
4231 				0,	    /* type */
4232 				TRUE	    /* valid */
4233 				) == FAIL)
4234 		    {
4235 			got_int = TRUE;
4236 			break;
4237 		    }
4238 		    found_match = TRUE;
4239 		    if (--tomatch == 0)
4240 			break;
4241 		    if ((flags & VGR_GLOBAL) == 0
4242 					       || regmatch.endpos[0].lnum > 0)
4243 			break;
4244 		    col = regmatch.endpos[0].col
4245 					    + (col == regmatch.endpos[0].col);
4246 		    if (col > (colnr_T)STRLEN(ml_get_buf(buf, lnum, FALSE)))
4247 			break;
4248 		}
4249 		line_breakcheck();
4250 		if (got_int)
4251 		    break;
4252 	    }
4253 #ifdef FEAT_AUTOCMD
4254 	    cur_qf_start = qi->qf_lists[qi->qf_curlist].qf_start;
4255 #endif
4256 
4257 	    if (using_dummy)
4258 	    {
4259 		if (found_match && first_match_buf == NULL)
4260 		    first_match_buf = buf;
4261 		if (duplicate_name)
4262 		{
4263 		    /* Never keep a dummy buffer if there is another buffer
4264 		     * with the same name. */
4265 		    wipe_dummy_buffer(buf, dirname_start);
4266 		    buf = NULL;
4267 		}
4268 		else if (!cmdmod.hide
4269 			    || buf->b_p_bh[0] == 'u'	/* "unload" */
4270 			    || buf->b_p_bh[0] == 'w'	/* "wipe" */
4271 			    || buf->b_p_bh[0] == 'd')	/* "delete" */
4272 		{
4273 		    /* When no match was found we don't need to remember the
4274 		     * buffer, wipe it out.  If there was a match and it
4275 		     * wasn't the first one or we won't jump there: only
4276 		     * unload the buffer.
4277 		     * Ignore 'hidden' here, because it may lead to having too
4278 		     * many swap files. */
4279 		    if (!found_match)
4280 		    {
4281 			wipe_dummy_buffer(buf, dirname_start);
4282 			buf = NULL;
4283 		    }
4284 		    else if (buf != first_match_buf || (flags & VGR_NOJUMP))
4285 		    {
4286 			unload_dummy_buffer(buf, dirname_start);
4287 			/* Keeping the buffer, remove the dummy flag. */
4288 			buf->b_flags &= ~BF_DUMMY;
4289 			buf = NULL;
4290 		    }
4291 		}
4292 
4293 		if (buf != NULL)
4294 		{
4295 		    /* Keeping the buffer, remove the dummy flag. */
4296 		    buf->b_flags &= ~BF_DUMMY;
4297 
4298 		    /* If the buffer is still loaded we need to use the
4299 		     * directory we jumped to below. */
4300 		    if (buf == first_match_buf
4301 			    && target_dir == NULL
4302 			    && STRCMP(dirname_start, dirname_now) != 0)
4303 			target_dir = vim_strsave(dirname_now);
4304 
4305 		    /* The buffer is still loaded, the Filetype autocommands
4306 		     * need to be done now, in that buffer.  And the modelines
4307 		     * need to be done (again).  But not the window-local
4308 		     * options! */
4309 		    aucmd_prepbuf(&aco, buf);
4310 #if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
4311 		    apply_autocmds(EVENT_FILETYPE, buf->b_p_ft,
4312 						     buf->b_fname, TRUE, buf);
4313 #endif
4314 		    do_modelines(OPT_NOWIN);
4315 		    aucmd_restbuf(&aco);
4316 		}
4317 	    }
4318 	}
4319     }
4320 
4321     FreeWild(fcount, fnames);
4322 
4323     qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
4324     qi->qf_lists[qi->qf_curlist].qf_ptr = qi->qf_lists[qi->qf_curlist].qf_start;
4325     qi->qf_lists[qi->qf_curlist].qf_index = 1;
4326 
4327 #ifdef FEAT_WINDOWS
4328     qf_update_buffer(qi, NULL);
4329 #endif
4330 
4331 #ifdef FEAT_AUTOCMD
4332     if (au_name != NULL)
4333 	apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
4334 					       curbuf->b_fname, TRUE, curbuf);
4335 #endif
4336 
4337     /* Jump to first match. */
4338     if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
4339     {
4340 	if ((flags & VGR_NOJUMP) == 0)
4341 	{
4342 	    buf = curbuf;
4343 	    qf_jump(qi, 0, 0, eap->forceit);
4344 	    if (buf != curbuf)
4345 		/* If we jumped to another buffer redrawing will already be
4346 		 * taken care of. */
4347 		redraw_for_dummy = FALSE;
4348 
4349 	    /* Jump to the directory used after loading the buffer. */
4350 	    if (curbuf == first_match_buf && target_dir != NULL)
4351 	    {
4352 		exarg_T ea;
4353 
4354 		ea.arg = target_dir;
4355 		ea.cmdidx = CMD_lcd;
4356 		ex_cd(&ea);
4357 	    }
4358 	}
4359     }
4360     else
4361 	EMSG2(_(e_nomatch2), s);
4362 
4363     /* If we loaded a dummy buffer into the current window, the autocommands
4364      * may have messed up things, need to redraw and recompute folds. */
4365     if (redraw_for_dummy)
4366     {
4367 #ifdef FEAT_FOLDING
4368 	foldUpdateAll(curwin);
4369 #else
4370 	redraw_later(NOT_VALID);
4371 #endif
4372     }
4373 
4374 theend:
4375     vim_free(title);
4376     vim_free(dirname_now);
4377     vim_free(dirname_start);
4378     vim_free(target_dir);
4379     vim_regfree(regmatch.regprog);
4380 }
4381 
4382 /*
4383  * Restore current working directory to "dirname_start" if they differ, taking
4384  * into account whether it is set locally or globally.
4385  */
4386     static void
4387 restore_start_dir(char_u *dirname_start)
4388 {
4389     char_u *dirname_now = alloc(MAXPATHL);
4390 
4391     if (NULL != dirname_now)
4392     {
4393 	mch_dirname(dirname_now, MAXPATHL);
4394 	if (STRCMP(dirname_start, dirname_now) != 0)
4395 	{
4396 	    /* If the directory has changed, change it back by building up an
4397 	     * appropriate ex command and executing it. */
4398 	    exarg_T ea;
4399 
4400 	    ea.arg = dirname_start;
4401 	    ea.cmdidx = (curwin->w_localdir == NULL) ? CMD_cd : CMD_lcd;
4402 	    ex_cd(&ea);
4403 	}
4404 	vim_free(dirname_now);
4405     }
4406 }
4407 
4408 /*
4409  * Load file "fname" into a dummy buffer and return the buffer pointer,
4410  * placing the directory resulting from the buffer load into the
4411  * "resulting_dir" pointer. "resulting_dir" must be allocated by the caller
4412  * prior to calling this function. Restores directory to "dirname_start" prior
4413  * to returning, if autocmds or the 'autochdir' option have changed it.
4414  *
4415  * If creating the dummy buffer does not fail, must call unload_dummy_buffer()
4416  * or wipe_dummy_buffer() later!
4417  *
4418  * Returns NULL if it fails.
4419  */
4420     static buf_T *
4421 load_dummy_buffer(
4422     char_u	*fname,
4423     char_u	*dirname_start,  /* in: old directory */
4424     char_u	*resulting_dir)  /* out: new directory */
4425 {
4426     buf_T	*newbuf;
4427     bufref_T	newbufref;
4428     bufref_T	newbuf_to_wipe;
4429     int		failed = TRUE;
4430     aco_save_T	aco;
4431 
4432     /* Allocate a buffer without putting it in the buffer list. */
4433     newbuf = buflist_new(NULL, NULL, (linenr_T)1, BLN_DUMMY);
4434     if (newbuf == NULL)
4435 	return NULL;
4436     set_bufref(&newbufref, newbuf);
4437 
4438     /* Init the options. */
4439     buf_copy_options(newbuf, BCO_ENTER | BCO_NOHELP);
4440 
4441     /* need to open the memfile before putting the buffer in a window */
4442     if (ml_open(newbuf) == OK)
4443     {
4444 	/* set curwin/curbuf to buf and save a few things */
4445 	aucmd_prepbuf(&aco, newbuf);
4446 
4447 	/* Need to set the filename for autocommands. */
4448 	(void)setfname(curbuf, fname, NULL, FALSE);
4449 
4450 	/* Create swap file now to avoid the ATTENTION message. */
4451 	check_need_swap(TRUE);
4452 
4453 	/* Remove the "dummy" flag, otherwise autocommands may not
4454 	 * work. */
4455 	curbuf->b_flags &= ~BF_DUMMY;
4456 
4457 	newbuf_to_wipe.br_buf = NULL;
4458 	if (readfile(fname, NULL,
4459 		    (linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM,
4460 		    NULL, READ_NEW | READ_DUMMY) == OK
4461 		&& !got_int
4462 		&& !(curbuf->b_flags & BF_NEW))
4463 	{
4464 	    failed = FALSE;
4465 	    if (curbuf != newbuf)
4466 	    {
4467 		/* Bloody autocommands changed the buffer!  Can happen when
4468 		 * using netrw and editing a remote file.  Use the current
4469 		 * buffer instead, delete the dummy one after restoring the
4470 		 * window stuff. */
4471 		set_bufref(&newbuf_to_wipe, newbuf);
4472 		newbuf = curbuf;
4473 	    }
4474 	}
4475 
4476 	/* restore curwin/curbuf and a few other things */
4477 	aucmd_restbuf(&aco);
4478 	if (newbuf_to_wipe.br_buf != NULL && bufref_valid(&newbuf_to_wipe))
4479 	    wipe_buffer(newbuf_to_wipe.br_buf, FALSE);
4480 
4481 	/* Add back the "dummy" flag, otherwise buflist_findname_stat() won't
4482 	 * skip it. */
4483 	newbuf->b_flags |= BF_DUMMY;
4484     }
4485 
4486     /*
4487      * When autocommands/'autochdir' option changed directory: go back.
4488      * Let the caller know what the resulting dir was first, in case it is
4489      * important.
4490      */
4491     mch_dirname(resulting_dir, MAXPATHL);
4492     restore_start_dir(dirname_start);
4493 
4494     if (!bufref_valid(&newbufref))
4495 	return NULL;
4496     if (failed)
4497     {
4498 	wipe_dummy_buffer(newbuf, dirname_start);
4499 	return NULL;
4500     }
4501     return newbuf;
4502 }
4503 
4504 /*
4505  * Wipe out the dummy buffer that load_dummy_buffer() created. Restores
4506  * directory to "dirname_start" prior to returning, if autocmds or the
4507  * 'autochdir' option have changed it.
4508  */
4509     static void
4510 wipe_dummy_buffer(buf_T *buf, char_u *dirname_start)
4511 {
4512     if (curbuf != buf)		/* safety check */
4513     {
4514 #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
4515 	cleanup_T   cs;
4516 
4517 	/* Reset the error/interrupt/exception state here so that aborting()
4518 	 * returns FALSE when wiping out the buffer.  Otherwise it doesn't
4519 	 * work when got_int is set. */
4520 	enter_cleanup(&cs);
4521 #endif
4522 
4523 	wipe_buffer(buf, FALSE);
4524 
4525 #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
4526 	/* Restore the error/interrupt/exception state if not discarded by a
4527 	 * new aborting error, interrupt, or uncaught exception. */
4528 	leave_cleanup(&cs);
4529 #endif
4530 	/* When autocommands/'autochdir' option changed directory: go back. */
4531 	restore_start_dir(dirname_start);
4532     }
4533 }
4534 
4535 /*
4536  * Unload the dummy buffer that load_dummy_buffer() created. Restores
4537  * directory to "dirname_start" prior to returning, if autocmds or the
4538  * 'autochdir' option have changed it.
4539  */
4540     static void
4541 unload_dummy_buffer(buf_T *buf, char_u *dirname_start)
4542 {
4543     if (curbuf != buf)		/* safety check */
4544     {
4545 	close_buffer(NULL, buf, DOBUF_UNLOAD, FALSE);
4546 
4547 	/* When autocommands/'autochdir' option changed directory: go back. */
4548 	restore_start_dir(dirname_start);
4549     }
4550 }
4551 
4552 #if defined(FEAT_EVAL) || defined(PROTO)
4553 /*
4554  * Add each quickfix error to list "list" as a dictionary.
4555  * If qf_idx is -1, use the current list. Otherwise, use the specified list.
4556  */
4557     int
4558 get_errorlist(win_T *wp, int qf_idx, list_T *list)
4559 {
4560     qf_info_T	*qi = &ql_info;
4561     dict_T	*dict;
4562     char_u	buf[2];
4563     qfline_T	*qfp;
4564     int		i;
4565     int		bufnum;
4566 
4567     if (wp != NULL)
4568     {
4569 	qi = GET_LOC_LIST(wp);
4570 	if (qi == NULL)
4571 	    return FAIL;
4572     }
4573 
4574     if (qf_idx == -1)
4575 	qf_idx = qi->qf_curlist;
4576 
4577     if (qf_idx >= qi->qf_listcount
4578 	    || qi->qf_lists[qf_idx].qf_count == 0)
4579 	return FAIL;
4580 
4581     qfp = qi->qf_lists[qf_idx].qf_start;
4582     for (i = 1; !got_int && i <= qi->qf_lists[qf_idx].qf_count; ++i)
4583     {
4584 	/* Handle entries with a non-existing buffer number. */
4585 	bufnum = qfp->qf_fnum;
4586 	if (bufnum != 0 && (buflist_findnr(bufnum) == NULL))
4587 	    bufnum = 0;
4588 
4589 	if ((dict = dict_alloc()) == NULL)
4590 	    return FAIL;
4591 	if (list_append_dict(list, dict) == FAIL)
4592 	    return FAIL;
4593 
4594 	buf[0] = qfp->qf_type;
4595 	buf[1] = NUL;
4596 	if ( dict_add_nr_str(dict, "bufnr", (long)bufnum, NULL) == FAIL
4597 	  || dict_add_nr_str(dict, "lnum",  (long)qfp->qf_lnum, NULL) == FAIL
4598 	  || dict_add_nr_str(dict, "col",   (long)qfp->qf_col, NULL) == FAIL
4599 	  || dict_add_nr_str(dict, "vcol",  (long)qfp->qf_viscol, NULL) == FAIL
4600 	  || dict_add_nr_str(dict, "nr",    (long)qfp->qf_nr, NULL) == FAIL
4601 	  || dict_add_nr_str(dict, "pattern",  0L,
4602 	     qfp->qf_pattern == NULL ? (char_u *)"" : qfp->qf_pattern) == FAIL
4603 	  || dict_add_nr_str(dict, "text",  0L,
4604 		   qfp->qf_text == NULL ? (char_u *)"" : qfp->qf_text) == FAIL
4605 	  || dict_add_nr_str(dict, "type",  0L, buf) == FAIL
4606 	  || dict_add_nr_str(dict, "valid", (long)qfp->qf_valid, NULL) == FAIL)
4607 	    return FAIL;
4608 
4609 	qfp = qfp->qf_next;
4610 	if (qfp == NULL)
4611 	    break;
4612     }
4613     return OK;
4614 }
4615 
4616 /*
4617  * Flags used by getqflist()/getloclist() to determine which fields to return.
4618  */
4619 enum {
4620     QF_GETLIST_NONE	= 0x0,
4621     QF_GETLIST_TITLE	= 0x1,
4622     QF_GETLIST_ITEMS	= 0x2,
4623     QF_GETLIST_NR	= 0x4,
4624     QF_GETLIST_WINID	= 0x8,
4625     QF_GETLIST_ALL	= 0xFF
4626 };
4627 
4628 /*
4629  * Return quickfix/location list details (title) as a
4630  * dictionary. 'what' contains the details to return. If 'list_idx' is -1,
4631  * then current list is used. Otherwise the specified list is used.
4632  */
4633     int
4634 get_errorlist_properties(win_T *wp, dict_T *what, dict_T *retdict)
4635 {
4636     qf_info_T	*qi = &ql_info;
4637     int		status = OK;
4638     int		qf_idx;
4639     dictitem_T	*di;
4640     int		flags = QF_GETLIST_NONE;
4641 
4642     if (wp != NULL)
4643     {
4644 	qi = GET_LOC_LIST(wp);
4645 	if (qi == NULL)
4646 	    return FAIL;
4647     }
4648 
4649     qf_idx = qi->qf_curlist;		/* default is the current list */
4650     if ((di = dict_find(what, (char_u *)"nr", -1)) != NULL)
4651     {
4652 	/* Use the specified quickfix/location list */
4653 	if (di->di_tv.v_type == VAR_NUMBER)
4654 	{
4655 	    /* for zero use the current list */
4656 	    if (di->di_tv.vval.v_number != 0)
4657 	    {
4658 		qf_idx = di->di_tv.vval.v_number - 1;
4659 		if (qf_idx < 0 || qf_idx >= qi->qf_listcount)
4660 		    return FAIL;
4661 	    }
4662 	    flags |= QF_GETLIST_NR;
4663 	}
4664 	else
4665 	    return FAIL;
4666     }
4667 
4668     if (dict_find(what, (char_u *)"all", -1) != NULL)
4669 	flags |= QF_GETLIST_ALL;
4670 
4671     if (dict_find(what, (char_u *)"title", -1) != NULL)
4672 	flags |= QF_GETLIST_TITLE;
4673 
4674     if (dict_find(what, (char_u *)"winid", -1) != NULL)
4675 	flags |= QF_GETLIST_WINID;
4676 
4677     if (flags & QF_GETLIST_TITLE)
4678     {
4679 	char_u	*t;
4680 	t = qi->qf_lists[qf_idx].qf_title;
4681 	if (t == NULL)
4682 	    t = (char_u *)"";
4683 	status = dict_add_nr_str(retdict, "title", 0L, t);
4684     }
4685     if ((status == OK) && (flags & QF_GETLIST_NR))
4686 	status = dict_add_nr_str(retdict, "nr", qf_idx + 1, NULL);
4687     if ((status == OK) && (flags & QF_GETLIST_WINID))
4688     {
4689 	win_T	*win;
4690 	win = qf_find_win(qi);
4691 	if (win != NULL)
4692 	    status = dict_add_nr_str(retdict, "winid", win->w_id, NULL);
4693     }
4694 
4695     return status;
4696 }
4697 
4698 /*
4699  * Add list of entries to quickfix/location list. Each list entry is
4700  * a dictionary with item information.
4701  */
4702     static int
4703 qf_add_entries(
4704 	qf_info_T	*qi,
4705 	list_T		*list,
4706 	char_u		*title,
4707 	int		action)
4708 {
4709     listitem_T	*li;
4710     dict_T	*d;
4711     char_u	*filename, *pattern, *text, *type;
4712     int		bufnum;
4713     long	lnum;
4714     int		col, nr;
4715     int		vcol;
4716 #ifdef FEAT_WINDOWS
4717     qfline_T	*old_last = NULL;
4718 #endif
4719     int		valid, status;
4720     int		retval = OK;
4721     int		did_bufnr_emsg = FALSE;
4722 
4723     if (action == ' ' || qi->qf_curlist == qi->qf_listcount)
4724 	/* make place for a new list */
4725 	qf_new_list(qi, title);
4726 #ifdef FEAT_WINDOWS
4727     else if (action == 'a' && qi->qf_lists[qi->qf_curlist].qf_count > 0)
4728 	/* Adding to existing list, use last entry. */
4729 	old_last = qi->qf_lists[qi->qf_curlist].qf_last;
4730 #endif
4731     else if (action == 'r')
4732     {
4733 	qf_free(qi, qi->qf_curlist);
4734 	qf_store_title(qi, title);
4735     }
4736 
4737     for (li = list->lv_first; li != NULL; li = li->li_next)
4738     {
4739 	if (li->li_tv.v_type != VAR_DICT)
4740 	    continue; /* Skip non-dict items */
4741 
4742 	d = li->li_tv.vval.v_dict;
4743 	if (d == NULL)
4744 	    continue;
4745 
4746 	filename = get_dict_string(d, (char_u *)"filename", TRUE);
4747 	bufnum = (int)get_dict_number(d, (char_u *)"bufnr");
4748 	lnum = (int)get_dict_number(d, (char_u *)"lnum");
4749 	col = (int)get_dict_number(d, (char_u *)"col");
4750 	vcol = (int)get_dict_number(d, (char_u *)"vcol");
4751 	nr = (int)get_dict_number(d, (char_u *)"nr");
4752 	type = get_dict_string(d, (char_u *)"type", TRUE);
4753 	pattern = get_dict_string(d, (char_u *)"pattern", TRUE);
4754 	text = get_dict_string(d, (char_u *)"text", TRUE);
4755 	if (text == NULL)
4756 	    text = vim_strsave((char_u *)"");
4757 
4758 	valid = TRUE;
4759 	if ((filename == NULL && bufnum == 0) || (lnum == 0 && pattern == NULL))
4760 	    valid = FALSE;
4761 
4762 	/* Mark entries with non-existing buffer number as not valid. Give the
4763 	 * error message only once. */
4764 	if (bufnum != 0 && (buflist_findnr(bufnum) == NULL))
4765 	{
4766 	    if (!did_bufnr_emsg)
4767 	    {
4768 		did_bufnr_emsg = TRUE;
4769 		EMSGN(_("E92: Buffer %ld not found"), bufnum);
4770 	    }
4771 	    valid = FALSE;
4772 	    bufnum = 0;
4773 	}
4774 
4775 	status =  qf_add_entry(qi,
4776 			       NULL,	    /* dir */
4777 			       filename,
4778 			       bufnum,
4779 			       text,
4780 			       lnum,
4781 			       col,
4782 			       vcol,	    /* vis_col */
4783 			       pattern,	    /* search pattern */
4784 			       nr,
4785 			       type == NULL ? NUL : *type,
4786 			       valid);
4787 
4788 	vim_free(filename);
4789 	vim_free(pattern);
4790 	vim_free(text);
4791 	vim_free(type);
4792 
4793 	if (status == FAIL)
4794 	{
4795 	    retval = FAIL;
4796 	    break;
4797 	}
4798     }
4799 
4800     if (qi->qf_lists[qi->qf_curlist].qf_index == 0)
4801 	/* no valid entry */
4802 	qi->qf_lists[qi->qf_curlist].qf_nonevalid = TRUE;
4803     else
4804 	qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
4805     if (action != 'a')
4806     {
4807 	qi->qf_lists[qi->qf_curlist].qf_ptr =
4808 	    qi->qf_lists[qi->qf_curlist].qf_start;
4809 	if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
4810 	    qi->qf_lists[qi->qf_curlist].qf_index = 1;
4811     }
4812 
4813 #ifdef FEAT_WINDOWS
4814     /* Don't update the cursor in quickfix window when appending entries */
4815     qf_update_buffer(qi, old_last);
4816 #endif
4817 
4818     return retval;
4819 }
4820 
4821     static int
4822 qf_set_properties(qf_info_T *qi, dict_T *what, int action)
4823 {
4824     dictitem_T	*di;
4825     int		retval = FAIL;
4826     int		qf_idx;
4827     int		newlist = FALSE;
4828 
4829     if (action == ' ' || qi->qf_curlist == qi->qf_listcount)
4830 	newlist = TRUE;
4831 
4832     qf_idx = qi->qf_curlist;		/* default is the current list */
4833     if ((di = dict_find(what, (char_u *)"nr", -1)) != NULL)
4834     {
4835 	/* Use the specified quickfix/location list */
4836 	if (di->di_tv.v_type == VAR_NUMBER)
4837 	{
4838 	    qf_idx = di->di_tv.vval.v_number - 1;
4839 	    if (qf_idx < 0 || qf_idx >= qi->qf_listcount)
4840 		return FAIL;
4841 	}
4842 	else
4843 	    return FAIL;
4844 	newlist = FALSE;	/* use the specified list */
4845     }
4846 
4847     if (newlist)
4848     {
4849 	qf_new_list(qi, NULL);
4850 	qf_idx = qi->qf_curlist;
4851     }
4852 
4853     if ((di = dict_find(what, (char_u *)"title", -1)) != NULL)
4854     {
4855 	if (di->di_tv.v_type == VAR_STRING)
4856 	{
4857 	    vim_free(qi->qf_lists[qf_idx].qf_title);
4858 	    qi->qf_lists[qf_idx].qf_title =
4859 		get_dict_string(what, (char_u *)"title", TRUE);
4860 	    if (qf_idx == qi->qf_curlist)
4861 		qf_update_win_titlevar(qi);
4862 	    retval = OK;
4863 	}
4864     }
4865 
4866     return retval;
4867 }
4868 
4869 /*
4870  * Find the non-location list window with the specified location list.
4871  */
4872     static win_T *
4873 find_win_with_ll(qf_info_T *qi)
4874 {
4875     win_T	*wp = NULL;
4876 
4877     FOR_ALL_WINDOWS(wp)
4878 	if ((wp->w_llist == qi) && !bt_quickfix(wp->w_buffer))
4879 	    return wp;
4880 
4881     return NULL;
4882 }
4883 
4884 /*
4885  * Free the entire quickfix/location list stack.
4886  * If the quickfix/location list window is open, then clear it.
4887  */
4888     static void
4889 qf_free_stack(win_T *wp, qf_info_T *qi)
4890 {
4891     win_T	*qfwin = qf_find_win(qi);
4892     win_T	*llwin = NULL;
4893     win_T	*orig_wp = wp;
4894 
4895     if (qfwin != NULL)
4896     {
4897 	/* If the quickfix/location list window is open, then clear it */
4898 	if (qi->qf_curlist < qi->qf_listcount)
4899 	    qf_free(qi, qi->qf_curlist);
4900 	qf_update_buffer(qi, NULL);
4901     }
4902 
4903     if (wp != NULL && IS_LL_WINDOW(wp))
4904     {
4905 	/* If in the location list window, then use the non-location list
4906 	 * window with this location list (if present)
4907 	 */
4908 	llwin = find_win_with_ll(qi);
4909 	if (llwin != NULL)
4910 	    wp = llwin;
4911     }
4912 
4913     qf_free_all(wp);
4914     if (wp == NULL)
4915     {
4916 	/* quickfix list */
4917 	qi->qf_curlist = 0;
4918 	qi->qf_listcount = 0;
4919     }
4920     else if (IS_LL_WINDOW(orig_wp))
4921     {
4922 	/* If the location list window is open, then create a new empty
4923 	 * location list */
4924 	qf_info_T *new_ll = ll_new_list();
4925 	orig_wp->w_llist_ref = new_ll;
4926 	if (llwin != NULL)
4927 	{
4928 	    llwin->w_llist = new_ll;
4929 	    new_ll->qf_refcount++;
4930 	}
4931     }
4932 }
4933 
4934 /*
4935  * Populate the quickfix list with the items supplied in the list
4936  * of dictionaries. "title" will be copied to w:quickfix_title.
4937  * "action" is 'a' for add, 'r' for replace.  Otherwise create a new list.
4938  */
4939     int
4940 set_errorlist(
4941 	win_T	*wp,
4942 	list_T	*list,
4943 	int	action,
4944 	char_u	*title,
4945 	dict_T	*what)
4946 {
4947     qf_info_T	*qi = &ql_info;
4948     int		retval = OK;
4949 
4950     if (wp != NULL)
4951     {
4952 	qi = ll_get_or_alloc_list(wp);
4953 	if (qi == NULL)
4954 	    return FAIL;
4955     }
4956 
4957     if (action == 'f')
4958     {
4959 	/* Free the entire quickfix or location list stack */
4960 	qf_free_stack(wp, qi);
4961     }
4962     else if (what != NULL)
4963 	retval = qf_set_properties(qi, what, action);
4964     else
4965 	retval = qf_add_entries(qi, list, title, action);
4966 
4967     return retval;
4968 }
4969 #endif
4970 
4971 /*
4972  * ":[range]cbuffer [bufnr]" command.
4973  * ":[range]caddbuffer [bufnr]" command.
4974  * ":[range]cgetbuffer [bufnr]" command.
4975  * ":[range]lbuffer [bufnr]" command.
4976  * ":[range]laddbuffer [bufnr]" command.
4977  * ":[range]lgetbuffer [bufnr]" command.
4978  */
4979     void
4980 ex_cbuffer(exarg_T *eap)
4981 {
4982     buf_T	*buf = NULL;
4983     qf_info_T	*qi = &ql_info;
4984 #ifdef FEAT_AUTOCMD
4985     char_u	*au_name = NULL;
4986 #endif
4987 
4988     if (eap->cmdidx == CMD_lbuffer || eap->cmdidx == CMD_lgetbuffer
4989 	    || eap->cmdidx == CMD_laddbuffer)
4990     {
4991 	qi = ll_get_or_alloc_list(curwin);
4992 	if (qi == NULL)
4993 	    return;
4994     }
4995 
4996 #ifdef FEAT_AUTOCMD
4997     switch (eap->cmdidx)
4998     {
4999 	case CMD_cbuffer:	au_name = (char_u *)"cbuffer"; break;
5000 	case CMD_cgetbuffer:	au_name = (char_u *)"cgetbuffer"; break;
5001 	case CMD_caddbuffer:	au_name = (char_u *)"caddbuffer"; break;
5002 	case CMD_lbuffer:	au_name = (char_u *)"lbuffer"; break;
5003 	case CMD_lgetbuffer:	au_name = (char_u *)"lgetbuffer"; break;
5004 	case CMD_laddbuffer:	au_name = (char_u *)"laddbuffer"; break;
5005 	default: break;
5006     }
5007     if (au_name != NULL && apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
5008 					       curbuf->b_fname, TRUE, curbuf))
5009     {
5010 # ifdef FEAT_EVAL
5011 	if (aborting())
5012 	    return;
5013 # endif
5014     }
5015 #endif
5016 
5017     if (*eap->arg == NUL)
5018 	buf = curbuf;
5019     else if (*skipwhite(skipdigits(eap->arg)) == NUL)
5020 	buf = buflist_findnr(atoi((char *)eap->arg));
5021     if (buf == NULL)
5022 	EMSG(_(e_invarg));
5023     else if (buf->b_ml.ml_mfp == NULL)
5024 	EMSG(_("E681: Buffer is not loaded"));
5025     else
5026     {
5027 	if (eap->addr_count == 0)
5028 	{
5029 	    eap->line1 = 1;
5030 	    eap->line2 = buf->b_ml.ml_line_count;
5031 	}
5032 	if (eap->line1 < 1 || eap->line1 > buf->b_ml.ml_line_count
5033 		|| eap->line2 < 1 || eap->line2 > buf->b_ml.ml_line_count)
5034 	    EMSG(_(e_invrange));
5035 	else
5036 	{
5037 	    char_u *qf_title = *eap->cmdlinep;
5038 
5039 	    if (buf->b_sfname)
5040 	    {
5041 		vim_snprintf((char *)IObuff, IOSIZE, "%s (%s)",
5042 				     (char *)qf_title, (char *)buf->b_sfname);
5043 		qf_title = IObuff;
5044 	    }
5045 
5046 	    if (qf_init_ext(qi, NULL, buf, NULL, p_efm,
5047 			    (eap->cmdidx != CMD_caddbuffer
5048 			     && eap->cmdidx != CMD_laddbuffer),
5049 						   eap->line1, eap->line2,
5050 						   qf_title, NULL) > 0)
5051 	    {
5052 #ifdef FEAT_AUTOCMD
5053 		if (au_name != NULL)
5054 		    apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
5055 			    curbuf->b_fname, TRUE, curbuf);
5056 #endif
5057 		if (eap->cmdidx == CMD_cbuffer || eap->cmdidx == CMD_lbuffer)
5058 		    qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
5059 	    }
5060 	}
5061     }
5062 }
5063 
5064 #if defined(FEAT_EVAL) || defined(PROTO)
5065 /*
5066  * ":cexpr {expr}", ":cgetexpr {expr}", ":caddexpr {expr}" command.
5067  * ":lexpr {expr}", ":lgetexpr {expr}", ":laddexpr {expr}" command.
5068  */
5069     void
5070 ex_cexpr(exarg_T *eap)
5071 {
5072     typval_T	*tv;
5073     qf_info_T	*qi = &ql_info;
5074 #ifdef FEAT_AUTOCMD
5075     char_u	*au_name = NULL;
5076 #endif
5077 
5078     if (eap->cmdidx == CMD_lexpr || eap->cmdidx == CMD_lgetexpr
5079 	    || eap->cmdidx == CMD_laddexpr)
5080     {
5081 	qi = ll_get_or_alloc_list(curwin);
5082 	if (qi == NULL)
5083 	    return;
5084     }
5085 
5086 #ifdef FEAT_AUTOCMD
5087     switch (eap->cmdidx)
5088     {
5089 	case CMD_cexpr:	    au_name = (char_u *)"cexpr"; break;
5090 	case CMD_cgetexpr:  au_name = (char_u *)"cgetexpr"; break;
5091 	case CMD_caddexpr:  au_name = (char_u *)"caddexpr"; break;
5092 	case CMD_lexpr:	    au_name = (char_u *)"lexpr"; break;
5093 	case CMD_lgetexpr:  au_name = (char_u *)"lgetexpr"; break;
5094 	case CMD_laddexpr:  au_name = (char_u *)"laddexpr"; break;
5095 	default: break;
5096     }
5097     if (au_name != NULL && apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
5098 					       curbuf->b_fname, TRUE, curbuf))
5099     {
5100 # ifdef FEAT_EVAL
5101 	if (aborting())
5102 	    return;
5103 # endif
5104     }
5105 #endif
5106 
5107     /* Evaluate the expression.  When the result is a string or a list we can
5108      * use it to fill the errorlist. */
5109     tv = eval_expr(eap->arg, NULL);
5110     if (tv != NULL)
5111     {
5112 	if ((tv->v_type == VAR_STRING && tv->vval.v_string != NULL)
5113 		|| (tv->v_type == VAR_LIST && tv->vval.v_list != NULL))
5114 	{
5115 	    if (qf_init_ext(qi, NULL, NULL, tv, p_efm,
5116 			    (eap->cmdidx != CMD_caddexpr
5117 			     && eap->cmdidx != CMD_laddexpr),
5118 				 (linenr_T)0, (linenr_T)0, *eap->cmdlinep,
5119 				 NULL) > 0)
5120 	    {
5121 #ifdef FEAT_AUTOCMD
5122 		if (au_name != NULL)
5123 		    apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
5124 			    curbuf->b_fname, TRUE, curbuf);
5125 #endif
5126 		if (eap->cmdidx == CMD_cexpr || eap->cmdidx == CMD_lexpr)
5127 		    qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
5128 	    }
5129 	}
5130 	else
5131 	    EMSG(_("E777: String or List expected"));
5132 	free_tv(tv);
5133     }
5134 }
5135 #endif
5136 
5137 /*
5138  * ":helpgrep {pattern}"
5139  */
5140     void
5141 ex_helpgrep(exarg_T *eap)
5142 {
5143     regmatch_T	regmatch;
5144     char_u	*save_cpo;
5145     char_u	*p;
5146     int		fcount;
5147     char_u	**fnames;
5148     FILE	*fd;
5149     int		fi;
5150     long	lnum;
5151 #ifdef FEAT_MULTI_LANG
5152     char_u	*lang;
5153 #endif
5154     qf_info_T	*qi = &ql_info;
5155     qf_info_T	*save_qi;
5156     int		new_qi = FALSE;
5157     win_T	*wp;
5158 #ifdef FEAT_AUTOCMD
5159     char_u	*au_name =  NULL;
5160 #endif
5161 
5162 #ifdef FEAT_MULTI_LANG
5163     /* Check for a specified language */
5164     lang = check_help_lang(eap->arg);
5165 #endif
5166 
5167 #ifdef FEAT_AUTOCMD
5168     switch (eap->cmdidx)
5169     {
5170 	case CMD_helpgrep:  au_name = (char_u *)"helpgrep"; break;
5171 	case CMD_lhelpgrep: au_name = (char_u *)"lhelpgrep"; break;
5172 	default: break;
5173     }
5174     if (au_name != NULL && apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
5175 					       curbuf->b_fname, TRUE, curbuf))
5176     {
5177 # ifdef FEAT_EVAL
5178 	if (aborting())
5179 	    return;
5180 # endif
5181     }
5182 #endif
5183 
5184     /* Make 'cpoptions' empty, the 'l' flag should not be used here. */
5185     save_cpo = p_cpo;
5186     p_cpo = empty_option;
5187 
5188     if (eap->cmdidx == CMD_lhelpgrep)
5189     {
5190 	/* Find an existing help window */
5191 	FOR_ALL_WINDOWS(wp)
5192 	    if (wp->w_buffer != NULL && wp->w_buffer->b_help)
5193 		break;
5194 
5195 	if (wp == NULL)	    /* Help window not found */
5196 	    qi = NULL;
5197 	else
5198 	    qi = wp->w_llist;
5199 
5200 	if (qi == NULL)
5201 	{
5202 	    /* Allocate a new location list for help text matches */
5203 	    if ((qi = ll_new_list()) == NULL)
5204 		return;
5205 	    new_qi = TRUE;
5206 	}
5207     }
5208 
5209     /* Autocommands may change the list. Save it for later comparison */
5210     save_qi = qi;
5211 
5212     regmatch.regprog = vim_regcomp(eap->arg, RE_MAGIC + RE_STRING);
5213     regmatch.rm_ic = FALSE;
5214     if (regmatch.regprog != NULL)
5215     {
5216 #ifdef FEAT_MBYTE
5217 	vimconv_T vc;
5218 
5219 	/* Help files are in utf-8 or latin1, convert lines when 'encoding'
5220 	 * differs. */
5221 	vc.vc_type = CONV_NONE;
5222 	if (!enc_utf8)
5223 	    convert_setup(&vc, (char_u *)"utf-8", p_enc);
5224 #endif
5225 
5226 	/* create a new quickfix list */
5227 	qf_new_list(qi, *eap->cmdlinep);
5228 
5229 	/* Go through all directories in 'runtimepath' */
5230 	p = p_rtp;
5231 	while (*p != NUL && !got_int)
5232 	{
5233 	    copy_option_part(&p, NameBuff, MAXPATHL, ",");
5234 
5235 	    /* Find all "*.txt" and "*.??x" files in the "doc" directory. */
5236 	    add_pathsep(NameBuff);
5237 	    STRCAT(NameBuff, "doc/*.\\(txt\\|??x\\)");
5238 	    if (gen_expand_wildcards(1, &NameBuff, &fcount,
5239 					     &fnames, EW_FILE|EW_SILENT) == OK
5240 		    && fcount > 0)
5241 	    {
5242 		for (fi = 0; fi < fcount && !got_int; ++fi)
5243 		{
5244 #ifdef FEAT_MULTI_LANG
5245 		    /* Skip files for a different language. */
5246 		    if (lang != NULL
5247 			    && STRNICMP(lang, fnames[fi]
5248 					    + STRLEN(fnames[fi]) - 3, 2) != 0
5249 			    && !(STRNICMP(lang, "en", 2) == 0
5250 				&& STRNICMP("txt", fnames[fi]
5251 					   + STRLEN(fnames[fi]) - 3, 3) == 0))
5252 			    continue;
5253 #endif
5254 		    fd = mch_fopen((char *)fnames[fi], "r");
5255 		    if (fd != NULL)
5256 		    {
5257 			lnum = 1;
5258 			while (!vim_fgets(IObuff, IOSIZE, fd) && !got_int)
5259 			{
5260 			    char_u    *line = IObuff;
5261 #ifdef FEAT_MBYTE
5262 			    /* Convert a line if 'encoding' is not utf-8 and
5263 			     * the line contains a non-ASCII character. */
5264 			    if (vc.vc_type != CONV_NONE
5265 						   && has_non_ascii(IObuff))
5266 			    {
5267 				line = string_convert(&vc, IObuff, NULL);
5268 				if (line == NULL)
5269 				    line = IObuff;
5270 			    }
5271 #endif
5272 
5273 			    if (vim_regexec(&regmatch, line, (colnr_T)0))
5274 			    {
5275 				int	l = (int)STRLEN(line);
5276 
5277 				/* remove trailing CR, LF, spaces, etc. */
5278 				while (l > 0 && line[l - 1] <= ' ')
5279 				     line[--l] = NUL;
5280 
5281 				if (qf_add_entry(qi,
5282 					    NULL,	/* dir */
5283 					    fnames[fi],
5284 					    0,
5285 					    line,
5286 					    lnum,
5287 					    (int)(regmatch.startp[0] - line)
5288 								+ 1, /* col */
5289 					    FALSE,	/* vis_col */
5290 					    NULL,	/* search pattern */
5291 					    0,		/* nr */
5292 					    1,		/* type */
5293 					    TRUE	/* valid */
5294 					    ) == FAIL)
5295 				{
5296 				    got_int = TRUE;
5297 #ifdef FEAT_MBYTE
5298 				    if (line != IObuff)
5299 					vim_free(line);
5300 #endif
5301 				    break;
5302 				}
5303 			    }
5304 #ifdef FEAT_MBYTE
5305 			    if (line != IObuff)
5306 				vim_free(line);
5307 #endif
5308 			    ++lnum;
5309 			    line_breakcheck();
5310 			}
5311 			fclose(fd);
5312 		    }
5313 		}
5314 		FreeWild(fcount, fnames);
5315 	    }
5316 	}
5317 
5318 	vim_regfree(regmatch.regprog);
5319 #ifdef FEAT_MBYTE
5320 	if (vc.vc_type != CONV_NONE)
5321 	    convert_setup(&vc, NULL, NULL);
5322 #endif
5323 
5324 	qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
5325 	qi->qf_lists[qi->qf_curlist].qf_ptr =
5326 	    qi->qf_lists[qi->qf_curlist].qf_start;
5327 	qi->qf_lists[qi->qf_curlist].qf_index = 1;
5328     }
5329 
5330     if (p_cpo == empty_option)
5331 	p_cpo = save_cpo;
5332     else
5333 	/* Darn, some plugin changed the value. */
5334 	free_string_option(save_cpo);
5335 
5336 #ifdef FEAT_WINDOWS
5337     qf_update_buffer(qi, NULL);
5338 #endif
5339 
5340 #ifdef FEAT_AUTOCMD
5341     if (au_name != NULL)
5342     {
5343 	apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
5344 					       curbuf->b_fname, TRUE, curbuf);
5345 	if (!new_qi && qi != save_qi && qf_find_buf(qi) == NULL)
5346 	    /* autocommands made "qi" invalid */
5347 	    return;
5348     }
5349 #endif
5350 
5351     /* Jump to first match. */
5352     if (qi->qf_lists[qi->qf_curlist].qf_count > 0)
5353 	qf_jump(qi, 0, 0, FALSE);
5354     else
5355 	EMSG2(_(e_nomatch2), eap->arg);
5356 
5357     if (eap->cmdidx == CMD_lhelpgrep)
5358     {
5359 	/* If the help window is not opened or if it already points to the
5360 	 * correct location list, then free the new location list. */
5361 	if (!curwin->w_buffer->b_help || curwin->w_llist == qi)
5362 	{
5363 	    if (new_qi)
5364 		ll_free_all(&qi);
5365 	}
5366 	else if (curwin->w_llist == NULL)
5367 	    curwin->w_llist = qi;
5368     }
5369 }
5370 
5371 #endif /* FEAT_QUICKFIX */
5372