xref: /vim-8.2.3635/runtime/doc/quickfix.txt (revision 723d165c)
1*quickfix.txt*  For Vim version 8.1.  Last change: 2019 Jan 13
2
3
4		  VIM REFERENCE MANUAL    by Bram Moolenaar
5
6
7This subject is introduced in section |30.1| of the user manual.
8
91. Using QuickFix commands		|quickfix|
102. The error window			|quickfix-window|
113. Using more than one list of errors	|quickfix-error-lists|
124. Using :make				|:make_makeprg|
135. Using :grep				|grep|
146. Selecting a compiler			|compiler-select|
157. The error format			|error-file-format|
168. The directory stack			|quickfix-directory-stack|
179. Specific error file formats		|errorformats|
18
19{Vi does not have any of these commands}
20
21The quickfix commands are not available when the |+quickfix| feature was
22disabled at compile time.
23
24=============================================================================
251. Using QuickFix commands			*quickfix* *Quickfix* *E42*
26
27Vim has a special mode to speedup the edit-compile-edit cycle.  This is
28inspired by the quickfix option of the Manx's Aztec C compiler on the Amiga.
29The idea is to save the error messages from the compiler in a file and use Vim
30to jump to the errors one by one.  You can examine each problem and fix it,
31without having to remember all the error messages.
32
33In Vim the quickfix commands are used more generally to find a list of
34positions in files.  For example, |:vimgrep| finds pattern matches.  You can
35use the positions in a script with the |getqflist()| function.  Thus you can
36do a lot more than the edit/compile/fix cycle!
37
38If you have the error messages in a file you can start Vim with: >
39	vim -q filename
40
41From inside Vim an easy way to run a command and handle the output is with the
42|:make| command (see below).
43
44The 'errorformat' option should be set to match the error messages from your
45compiler (see |errorformat| below).
46
47							*quickfix-ID*
48Each quickfix list has a unique identifier called the quickfix ID and this
49number will not change within a Vim session. The |getqflist()| function can be
50used to get the identifier assigned to a list. There is also a quickfix list
51number which may change whenever more than ten lists are added to a quickfix
52stack.
53
54						*location-list* *E776*
55A location list is a window-local quickfix list. You get one after commands
56like `:lvimgrep`, `:lgrep`, `:lhelpgrep`, `:lmake`, etc., which create a
57location list instead of a quickfix list as the corresponding `:vimgrep`,
58`:grep`, `:helpgrep`, `:make` do.
59						*location-list-file-window*
60A location list is associated with a window and each window can have a
61separate location list.  A location list can be associated with only one
62window.  The location list is independent of the quickfix list.
63
64When a window with a location list is split, the new window gets a copy of the
65location list.  When there are no longer any references to a location list,
66the location list is destroyed.
67
68						*quickfix-changedtick*
69Every quickfix and location list has a read-only changedtick variable that
70tracks the total number of changes made to the list.  Every time the quickfix
71list is modified, this count is incremented. This can be used to perform an
72action only when the list has changed.  The |getqflist()| and |getloclist()|
73functions can be used to query the current value of changedtick.  You cannot
74change the changedtick variable.
75
76The following quickfix commands can be used.  The location list commands are
77similar to the quickfix commands, replacing the 'c' prefix in the quickfix
78command with 'l'.
79
80							*E924*
81If the current window was closed by an |autocommand| while processing a
82location list command, it will be aborted.
83
84							*E925* *E926*
85If the current quickfix or location list was changed by an |autocommand| while
86processing a quickfix or location list command, it will be aborted.
87
88							*:cc*
89:cc[!] [nr]		Display error [nr].  If [nr] is omitted, the same
90			error is displayed again.  Without [!] this doesn't
91			work when jumping to another buffer, the current buffer
92			has been changed, there is the only window for the
93			buffer and both 'hidden' and 'autowrite' are off.
94			When jumping to another buffer with [!] any changes to
95			the current buffer are lost, unless 'hidden' is set or
96			there is another window for this buffer.
97			The 'switchbuf' settings are respected when jumping
98			to a buffer.
99
100							*:ll*
101:ll[!] [nr]		Same as ":cc", except the location list for the
102			current window is used instead of the quickfix list.
103
104							*:cn* *:cnext* *E553*
105:[count]cn[ext][!]	Display the [count] next error in the list that
106			includes a file name.  If there are no file names at
107			all, go to the [count] next error.  See |:cc| for
108			[!] and 'switchbuf'.
109
110							*:lne* *:lnext*
111:[count]lne[xt][!]	Same as ":cnext", except the location list for the
112			current window is used instead of the quickfix list.
113
114:[count]cN[ext][!]		*:cp* *:cprevious*  *:cprev* *:cN* *:cNext*
115:[count]cp[revious][!]	Display the [count] previous error in the list that
116			includes a file name.  If there are no file names at
117			all, go to the [count] previous error.  See |:cc| for
118			[!] and 'switchbuf'.
119
120
121:[count]lN[ext][!]		*:lp* *:lprevious* *:lprev* *:lN* *:lNext*
122:[count]lp[revious][!]	Same as ":cNext" and ":cprevious", except the location
123			list for the current window is used instead of the
124			quickfix list.
125
126							*:cnf* *:cnfile*
127:[count]cnf[ile][!]	Display the first error in the [count] next file in
128			the list that includes a file name.  If there are no
129			file names at all or if there is no next file, go to
130			the [count] next error.  See |:cc| for [!] and
131			'switchbuf'.
132
133							*:lnf* *:lnfile*
134:[count]lnf[ile][!]	Same as ":cnfile", except the location list for the
135			current window is used instead of the quickfix list.
136
137:[count]cNf[ile][!]			*:cpf* *:cpfile* *:cNf* *:cNfile*
138:[count]cpf[ile][!]	Display the last error in the [count] previous file in
139			the list that includes a file name.  If there are no
140			file names at all or if there is no next file, go to
141			the [count] previous error.  See |:cc| for [!] and
142			'switchbuf'.
143
144
145:[count]lNf[ile][!]			*:lpf* *:lpfile* *:lNf* *:lNfile*
146:[count]lpf[ile][!]	Same as ":cNfile" and ":cpfile", except the location
147			list for the current window is used instead of the
148			quickfix list.
149
150							*:crewind* *:cr*
151:cr[ewind][!] [nr]	Display error [nr].  If [nr] is omitted, the FIRST
152			error is displayed.  See |:cc|.
153
154							*:lrewind* *:lr*
155:lr[ewind][!] [nr]	Same as ":crewind", except the location list for the
156			current window is used instead of the quickfix list.
157
158							*:cfirst* *:cfir*
159:cfir[st][!] [nr]	Same as ":crewind".
160
161							*:lfirst* *:lfir*
162:lfir[st][!] [nr]	Same as ":lrewind".
163
164							*:clast* *:cla*
165:cla[st][!] [nr]	Display error [nr].  If [nr] is omitted, the LAST
166			error is displayed.  See |:cc|.
167
168							*:llast* *:lla*
169:lla[st][!] [nr]	Same as ":clast", except the location list for the
170			current window is used instead of the quickfix list.
171
172							*:cq* *:cquit*
173:cq[uit][!]		Quit Vim with an error code, so that the compiler
174			will not compile the same file again.
175			WARNING: All changes in files are lost!  Also when the
176			[!] is not used.  It works like ":qall!" |:qall|,
177			except that Vim returns a non-zero exit code.
178
179							*:cf* *:cfile*
180:cf[ile][!] [errorfile]	Read the error file and jump to the first error.
181			This is done automatically when Vim is started with
182			the -q option.  You can use this command when you
183			keep Vim running while compiling.  If you give the
184			name of the errorfile, the 'errorfile' option will
185			be set to [errorfile].  See |:cc| for [!].
186			If the encoding of the error file differs from the
187			'encoding' option, you can use the 'makeencoding'
188			option to specify the encoding.
189
190							*:lf* *:lfile*
191:lf[ile][!] [errorfile]	Same as ":cfile", except the location list for the
192			current window is used instead of the quickfix list.
193			You can not use the -q command-line option to set
194			the location list.
195
196
197:cg[etfile] [errorfile]					*:cg* *:cgetfile*
198			Read the error file.  Just like ":cfile" but don't
199			jump to the first error.
200			If the encoding of the error file differs from the
201			'encoding' option, you can use the 'makeencoding'
202			option to specify the encoding.
203
204
205:lg[etfile] [errorfile]					*:lg* *:lgetfile*
206			Same as ":cgetfile", except the location list for the
207			current window is used instead of the quickfix list.
208
209							*:caddf* *:caddfile*
210:caddf[ile] [errorfile]	Read the error file and add the errors from the
211			errorfile to the current quickfix list. If a quickfix
212			list is not present, then a new list is created.
213			If the encoding of the error file differs from the
214			'encoding' option, you can use the 'makeencoding'
215			option to specify the encoding.
216
217							*:laddf* *:laddfile*
218:laddf[ile] [errorfile]	Same as ":caddfile", except the location list for the
219			current window is used instead of the quickfix list.
220
221						*:cb* *:cbuffer* *E681*
222:cb[uffer][!] [bufnr]	Read the error list from the current buffer.
223			When [bufnr] is given it must be the number of a
224			loaded buffer.  That buffer will then be used instead
225			of the current buffer.
226			A range can be specified for the lines to be used.
227			Otherwise all lines in the buffer are used.
228			See |:cc| for [!].
229
230						*:lb* *:lbuffer*
231:lb[uffer][!] [bufnr]	Same as ":cbuffer", except the location list for the
232			current window is used instead of the quickfix list.
233
234						*:cgetb* *:cgetbuffer*
235:cgetb[uffer] [bufnr]	Read the error list from the current buffer.  Just
236			like ":cbuffer" but don't jump to the first error.
237
238						*:lgetb* *:lgetbuffer*
239:lgetb[uffer] [bufnr]	Same as ":cgetbuffer", except the location list for
240			the current window is used instead of the quickfix
241			list.
242
243							*:cad* *:caddbuffer*
244:cad[dbuffer] [bufnr]	Read the error list from the current buffer and add
245			the errors to the current quickfix list.  If a
246			quickfix list is not present, then a new list is
247			created. Otherwise, same as ":cbuffer".
248
249							*:laddb* *:laddbuffer*
250:laddb[uffer] [bufnr]	Same as ":caddbuffer", except the location list for
251			the current window is used instead of the quickfix
252			list.
253
254							*:cex* *:cexpr* *E777*
255:cex[pr][!] {expr}	Create a quickfix list using the result of {expr} and
256			jump to the first error.
257			If {expr} is a String, then each new-line terminated
258			line in the String is processed using the global value
259			of 'errorformat' and the result is added to the
260			quickfix list.
261			If {expr} is a List, then each String item in the list
262			is processed and added to the quickfix list.  Non
263			String items in the List are ignored.
264			See |:cc| for [!].
265			Examples: >
266				:cexpr system('grep -n xyz *')
267				:cexpr getline(1, '$')
268<
269							*:lex* *:lexpr*
270:lex[pr][!] {expr}	Same as |:cexpr|, except the location list for the
271			current window is used instead of the quickfix list.
272
273							*:cgete* *:cgetexpr*
274:cgete[xpr] {expr}	Create a quickfix list using the result of {expr}.
275			Just like |:cexpr|, but don't jump to the first error.
276
277							*:lgete* *:lgetexpr*
278:lgete[xpr] {expr}	Same as |:cgetexpr|, except the location list for the
279			current window is used instead of the quickfix list.
280
281							*:cadde* *:caddexpr*
282:cadde[xpr] {expr}	Evaluate {expr} and add the resulting lines to the
283			current quickfix list. If a quickfix list is not
284			present, then a new list is created. The current
285			cursor position will not be changed. See |:cexpr| for
286			more information.
287			Example: >
288    :g/mypattern/caddexpr expand("%") . ":" . line(".") .  ":" . getline(".")
289<
290							*:lad* *:laddexpr*
291:lad[dexpr] {expr}	Same as ":caddexpr", except the location list for the
292			current window is used instead of the quickfix list.
293
294							*:cl* *:clist*
295:cl[ist] [from] [, [to]]
296			List all errors that are valid |quickfix-valid|.
297			If numbers [from] and/or [to] are given, the respective
298			range of errors is listed.  A negative number counts
299			from the last error backwards, -1 being the last error.
300			The 'switchbuf' settings are respected when jumping
301			to a buffer.
302			The |:filter| command can be used to display only the
303			quickfix entries matching a supplied pattern. The
304			pattern is matched against the filename, module name,
305			pattern and text of the entry.
306
307:cl[ist] +{count}	List the current and next {count} valid errors.  This
308			is similar to ":clist from from+count", where "from"
309			is the current error position.
310
311:cl[ist]! [from] [, [to]]
312			List all errors.
313
314:cl[ist]! +{count}	List the current and next {count} error lines.  This
315                        is useful to see unrecognized lines after the current
316			one.  For example, if ":clist" shows:
317        8384 testje.java:252: error: cannot find symbol ~
318                        Then using ":cl! +3" shows the reason:
319        8384 testje.java:252: error: cannot find symbol ~
320        8385:   ZexitCode = Fmainx(); ~
321        8386:               ^ ~
322        8387:   symbol:   method Fmainx() ~
323
324:lli[st] [from] [, [to]]				*:lli* *:llist*
325			Same as ":clist", except the location list for the
326			current window is used instead of the quickfix list.
327
328:lli[st]! [from] [, [to]]
329			List all the entries in the location list for the
330			current window.
331
332If you insert or delete lines, mostly the correct error location is still
333found because hidden marks are used.  Sometimes, when the mark has been
334deleted for some reason, the message "line changed" is shown to warn you that
335the error location may not be correct.  If you quit Vim and start again the
336marks are lost and the error locations may not be correct anymore.
337
338Two autocommands are available for running commands before and after a
339quickfix command (':make', ':grep' and so on) is executed. See
340|QuickFixCmdPre| and |QuickFixCmdPost| for details.
341
342						*QuickFixCmdPost-example*
343When 'encoding' differs from the locale, the error messages may have a
344different encoding from what Vim is using.  To convert the messages you can
345use this code: >
346	function QfMakeConv()
347	   let qflist = getqflist()
348	   for i in qflist
349	      let i.text = iconv(i.text, "cp936", "utf-8")
350	   endfor
351	   call setqflist(qflist)
352	endfunction
353
354	au QuickfixCmdPost make call QfMakeConv()
355Another option is using 'makeencoding'.
356
357							*quickfix-title*
358Every quickfix and location list has a title. By default the title is set to
359the command that created the list. The |getqflist()| and |getloclist()|
360functions can be used to get the title of a quickfix and a location list
361respectively. The |setqflist()| and |setloclist()| functions can be used to
362modify the title of a quickfix and location list respectively. Examples: >
363	call setqflist([], 'a', {'title' : 'Cmd output'})
364	echo getqflist({'title' : 1})
365	call setloclist(3, [], 'a', {'title' : 'Cmd output'})
366	echo getloclist(3, {'title' : 1})
367<
368							*quickfix-index*
369When you jump to a quickfix/location list entry using any of the quickfix
370commands (e.g. |:cc|, |:cnext|, |:cprev|, etc.), that entry becomes the
371currently selected entry. The index of the currently selected entry in a
372quickfix/location list can be obtained using the getqflist()/getloclist()
373functions. Examples: >
374	echo getqflist({'idx' : 0}).idx
375	echo getqflist({'id' : qfid, 'idx' : 0}).idx
376	echo getloclist(2, {'idx' : 0}).idx
377<
378For a new quickfix list, the first entry is selected and the index is 1.  Any
379entry in any quickfix/location list can be set as the currently selected entry
380using the setqflist() function. Examples: >
381	call setqflist([], 'a', {'idx' : 12})
382	call setqflist([], 'a', {'id' : qfid, 'idx' : 7})
383	call setloclist(1, [], 'a', {'idx' : 7})
384<
385							*quickfix-size*
386You can get the number of entries (size) in a quickfix and a location list
387using the |getqflist()| and |getloclist()| functions respectively. Examples: >
388	echo getqflist({'size' : 1})
389	echo getloclist(5, {'size' : 1})
390<
391							*quickfix-context*
392Any Vim type can be associated as a context with a quickfix or location list.
393The |setqflist()| and the |setloclist()| functions can be used to associate a
394context with a quickfix and a location list respectively. The |getqflist()|
395and the |getloclist()| functions can be used to retrieve the context of a
396quickfix and a location list respectively. This is useful for a Vim plugin
397dealing with multiple quickfix/location lists.
398Examples: >
399
400	let somectx = {'name' : 'Vim', 'type' : 'Editor'}
401	call setqflist([], 'a', {'context' : somectx})
402	echo getqflist({'context' : 1})
403
404	let newctx = ['red', 'green', 'blue']
405	call setloclist(2, [], 'a', {'id' : qfid, 'context' : newctx})
406	echo getloclist(2, {'id' : qfid, 'context' : 1})
407<
408							*quickfix-parse*
409You can parse a list of lines using 'errorformat' without creating or
410modifying a quickfix list using the |getqflist()| function. Examples: >
411	echo getqflist({'lines' : ["F1:10:Line10", "F2:20:Line20"]})
412	echo getqflist({'lines' : systemlist('grep -Hn quickfix *')})
413This returns a dictionary where the 'items' key contains the list of quickfix
414entries parsed from lines. The following shows how to use a custom
415'errorformat' to parse the lines without modifying the 'errorformat' option: >
416	echo getqflist({'efm' : '%f#%l#%m', 'lines' : ['F1#10#Line']})
417<
418
419EXECUTE A COMMAND IN ALL THE BUFFERS IN QUICKFIX OR LOCATION LIST:
420							*:cdo*
421:cdo[!] {cmd}		Execute {cmd} in each valid entry in the quickfix list.
422			It works like doing this: >
423				:cfirst
424				:{cmd}
425				:cnext
426				:{cmd}
427				etc.
428<			When the current file can't be |abandon|ed and the [!]
429			is not present, the command fails.
430			When an error is detected execution stops.
431			The last buffer (or where an error occurred) becomes
432			the current buffer.
433			{cmd} can contain '|' to concatenate several commands.
434
435			Only valid entries in the quickfix list are used.
436			A range can be used to select entries, e.g.: >
437				:10,$cdo cmd
438<			To skip entries 1 to 9.
439
440			Note: While this command is executing, the Syntax
441			autocommand event is disabled by adding it to
442			'eventignore'.  This considerably speeds up editing
443			each buffer.
444			{not in Vi}
445			Also see |:bufdo|, |:tabdo|, |:argdo|, |:windo|,
446			|:ldo|, |:cfdo| and |:lfdo|.
447
448							*:cfdo*
449:cfdo[!] {cmd}		Execute {cmd} in each file in the quickfix list.
450			It works like doing this: >
451				:cfirst
452				:{cmd}
453				:cnfile
454				:{cmd}
455				etc.
456<			Otherwise it works the same as `:cdo`.
457			{not in Vi}
458
459							*:ldo*
460:ld[o][!] {cmd}		Execute {cmd} in each valid entry in the location list
461			for the current window.
462			It works like doing this: >
463				:lfirst
464				:{cmd}
465				:lnext
466				:{cmd}
467				etc.
468<			Only valid entries in the location list are used.
469			Otherwise it works the same as `:cdo`.
470			{not in Vi}
471
472							*:lfdo*
473:lfdo[!] {cmd}		Execute {cmd} in each file in the location list for
474			the current window.
475			It works like doing this: >
476				:lfirst
477				:{cmd}
478				:lnfile
479				:{cmd}
480				etc.
481<			Otherwise it works the same as `:ldo`.
482			{not in Vi}
483
484=============================================================================
4852. The error window					*quickfix-window*
486
487					    *:cope* *:copen* *w:quickfix_title*
488:cope[n] [height]	Open a window to show the current list of errors.
489
490			When [height] is given, the window becomes that high
491			(if there is room).  When [height] is omitted the
492			window is made ten lines high.
493
494			If there already is a quickfix window, it will be made
495			the current window.  It is not possible to open a
496			second quickfix window.  If [height] is given the
497			existing window will be resized to it.
498
499							*quickfix-buffer*
500			The window will contain a special buffer, with
501			'buftype' equal to "quickfix".  Don't change this!
502			The window will have the w:quickfix_title variable set
503			which will indicate the command that produced the
504			quickfix list. This can be used to compose a custom
505			status line if the value of 'statusline' is adjusted
506			properly. Whenever this buffer is modified by a
507			quickfix command or function, the |b:changedtick|
508			variable is incremented.  You can get the number of
509			this buffer using the getqflist() and getloclist()
510			functions by passing the 'qfbufnr' item. For a
511			location list, this buffer is wiped out when the
512			location list is removed.
513
514							*:lop* *:lopen*
515:lop[en] [height]	Open a window to show the location list for the
516			current window. Works only when the location list for
517			the current window is present.  You can have more than
518			one location window opened at a time.  Otherwise, it
519			acts the same as ":copen".
520
521							*:ccl* *:cclose*
522:ccl[ose]		Close the quickfix window.
523
524							*:lcl* *:lclose*
525:lcl[ose]		Close the window showing the location list for the
526			current window.
527
528							*:cw* *:cwindow*
529:cw[indow] [height]	Open the quickfix window when there are recognized
530			errors.  If the window is already open and there are
531			no recognized errors, close the window.
532
533							*:lw* *:lwindow*
534:lw[indow] [height]	Same as ":cwindow", except use the window showing the
535			location list for the current window.
536
537							*:cbo* *:cbottom*
538:cbo[ttom]		Put the cursor in the last line of the quickfix window
539			and scroll to make it visible.  This is useful for
540			when errors are added by an asynchronous callback.
541			Only call it once in a while if there are many
542			updates to avoid a lot of redrawing.
543
544							*:lbo* *:lbottom*
545:lbo[ttom]		Same as ":cbottom", except use the window showing the
546			location list for the current window.
547
548Normally the quickfix window is at the bottom of the screen.  If there are
549vertical splits, it's at the bottom of the rightmost column of windows.  To
550make it always occupy the full width: >
551	:botright cwindow
552You can move the window around with |window-moving| commands.
553For example, to move it to the top: CTRL-W K
554The 'winfixheight' option will be set, which means that the window will mostly
555keep its height, ignoring 'winheight' and 'equalalways'.  You can change the
556height manually (e.g., by dragging the status line above it with the mouse).
557
558In the quickfix window, each line is one error.  The line number is equal to
559the error number.  The current entry is highlighted with the QuickFixLine
560highlighting.  You can change it to your liking, e.g.: >
561	:hi QuickFixLine ctermbg=Yellow guibg=Yellow
562
563You can use ":.cc" to jump to the error under the cursor.
564Hitting the <Enter> key or double-clicking the mouse on a line has the same
565effect.  The file containing the error is opened in the window above the
566quickfix window.  If there already is a window for that file, it is used
567instead.  If the buffer in the used window has changed, and the error is in
568another file, jumping to the error will fail.  You will first have to make
569sure the window contains a buffer which can be abandoned.
570					*CTRL-W_<Enter>* *CTRL-W_<CR>*
571You can use CTRL-W <Enter> to open a new window and jump to the error there.
572
573When the quickfix window has been filled, two autocommand events are
574triggered.  First the 'filetype' option is set to "qf", which triggers the
575FileType event.  Then the BufReadPost event is triggered, using "quickfix" for
576the buffer name.  This can be used to perform some action on the listed
577errors.  Example: >
578	au BufReadPost quickfix  setlocal modifiable
579		\ | silent exe 'g/^/s//\=line(".")." "/'
580		\ | setlocal nomodifiable
581This prepends the line number to each line.  Note the use of "\=" in the
582substitute string of the ":s" command, which is used to evaluate an
583expression.
584The BufWinEnter event is also triggered, again using "quickfix" for the buffer
585name.
586
587Note: When adding to an existing quickfix list the autocommand are not
588triggered.
589
590Note: Making changes in the quickfix window has no effect on the list of
591errors.  'modifiable' is off to avoid making changes.  If you delete or insert
592lines anyway, the relation between the text and the error number is messed up.
593If you really want to do this, you could write the contents of the quickfix
594window to a file and use ":cfile" to have it parsed and used as the new error
595list.
596
597						*location-list-window*
598The location list window displays the entries in a location list.  When you
599open a location list window, it is created below the current window and
600displays the location list for the current window.  The location list window
601is similar to the quickfix window, except that you can have more than one
602location list window open at a time. When you use a location list command in
603this window, the displayed location list is used.
604
605When you select a file from the location list window, the following steps are
606used to find a window to edit the file:
607
6081. If a window with the location list displayed in the location list window is
609   present, then the file is opened in that window.
6102. If the above step fails and if the file is already opened in another
611   window, then that window is used.
6123. If the above step fails then an existing window showing a buffer with
613   'buftype' not set is used.
6144. If the above step fails, then the file is edited in a new window.
615
616In all of the above cases, if the location list for the selected window is not
617yet set, then it is set to the location list displayed in the location list
618window.
619
620							*quickfix-window-ID*
621You can use the |getqflist()| and |getloclist()| functions to obtain the
622window ID of the quickfix window and location list window respectively (if
623present).  Examples: >
624	echo getqflist({'winid' : 1}).winid
625	echo getloclist(2, {'winid' : 1}).winid
626<
627							*getqflist-examples*
628The |getqflist()| and |getloclist()| functions can be used to get the various
629attributes of a quickfix and location list respectively. Some examples for
630using these functions are below:
631>
632    " get the title of the current quickfix list
633    :echo getqflist({'title' : 0}).title
634
635    " get the identifier of the current quickfix list
636    :let qfid = getqflist({'id' : 0}).id
637
638    " get the identifier of the fourth quickfix list in the stack
639    :let qfid = getqflist({'nr' : 4, 'id' : 0}).id
640
641    " check whether a quickfix list with a specific identifier exists
642    :if getqflist({'id' : qfid}).id == qfid
643
644    " get the index of the current quickfix list in the stack
645    :let qfnum = getqflist({'nr' : 0}).nr
646
647    " get the items of a quickfix list specified by an identifier
648    :echo getqflist({'id' : qfid, 'items' : 0}).items
649
650    " get the number of entries in a quickfix list specified by an id
651    :echo getqflist({'id' : qfid, 'size' : 0}).size
652
653    " get the context of the third quickfix list in the stack
654    :echo getqflist({'nr' : 3, 'context' : 0}).context
655
656    " get the number of quickfix lists in the stack
657    :echo getqflist({'nr' : '$'}).nr
658
659    " get the number of times the current quickfix list is changed
660    :echo getqflist({'changedtick' : 0}).changedtick
661
662    " get the current entry in a quickfix list specified by an identifier
663    :echo getqflist({'id' : qfid, 'idx' : 0}).idx
664
665    " get all the quickfix list attributes using an identifier
666    :echo getqflist({'id' : qfid, 'all' : 0})
667
668    " parse text from a List of lines and return a quickfix list
669    :let myList = ["a.java:10:L10", "b.java:20:L20"]
670    :echo getqflist({'lines' : myList}).items
671
672    " parse text using a custom 'efm' and return a quickfix list
673    :echo getqflist({'lines' : ['a.c#10#Line 10'], 'efm':'%f#%l#%m'}).items
674
675    " get the quickfix list window id
676    :echo getqflist({'winid' : 0}).winid
677
678    " get the quickfix list window buffer number
679    :echo getqflist({'qfbufnr' : 0}).qfbufnr
680
681    " get the context of the current location list
682    :echo getloclist(0, {'context' : 0}).context
683
684    " get the location list window id of the third window
685    :echo getloclist(3, {'winid' : 0}).winid
686
687    " get the location list window buffer number of the third window
688    :echo getloclist(3, {'qfbufnr' : 0}).qfbufnr
689
690    " get the file window id of a location list window (winnr: 4)
691    :echo getloclist(4, {'filewinid' : 0}).filewinid
692<
693							*setqflist-examples*
694The |setqflist()| and |setloclist()| functions can be used to set the various
695attributes of a quickfix and location list respectively. Some examples for
696using these functions are below:
697>
698    " create an empty quickfix list with a title and a context
699    :let t = 'Search results'
700    :let c = {'cmd' : 'grep'}
701    :call setqflist([], ' ', {'title' : t, 'context' : c})
702
703    " set the title of the current quickfix list
704    :call setqflist([], 'a', {'title' : 'Mytitle'})
705
706    " change the current entry in the list specified by an identifier
707    :call setqflist([], 'a', {'id' : qfid, 'idx' : 10})
708
709    " set the context of a quickfix list specified by an identifier
710    :call setqflist([], 'a', {'id' : qfid, 'context' : {'val' : 100}})
711
712    " create a new quickfix list from a command output
713    :call setqflist([], ' ', {'lines' : systemlist('grep -Hn main *.c')})
714
715    " parse text using a custom efm and add to a particular quickfix list
716    :call setqflist([], 'a', {'id' : qfid,
717		\ 'lines' : ["a.c#10#L10", "b.c#20#L20"], 'efm':'%f#%l#%m'})
718
719    " add items to the quickfix list specified by an identifier
720    :let newItems = [{'filename' : 'a.txt', 'lnum' : 10, 'text' : "Apple"},
721		    \ {'filename' : 'b.txt', 'lnum' : 20, 'text' : "Orange"}]
722    :call setqflist([], 'a', {'id' : qfid, 'items' : newItems})
723
724    " empty a quickfix list specified by an identifier
725    :call setqflist([], 'r', {'id' : qfid, 'items' : []})
726
727    " free all the quickfix lists in the stack
728    :call setqflist([], 'f')
729
730    " set the title of the fourth quickfix list
731    :call setqflist([], 'a', {'nr' : 4, 'title' : 'SomeTitle'})
732
733    " create a new quickfix list at the end of the stack
734    :call setqflist([], ' ', {'nr' : '$',
735			\ 'lines' : systemlist('grep -Hn class *.java')})
736
737    " create a new location list from a command output
738    :call setloclist(0, [], ' ', {'lines' : systemlist('grep -Hn main *.c')})
739
740    " replace the location list entries for the third window
741    :call setloclist(3, [], 'r', {'items' : newItems})
742<
743=============================================================================
7443. Using more than one list of errors			*quickfix-error-lists*
745
746So far has been assumed that there is only one list of errors.  Actually the
747ten last used lists are remembered.  When starting a new list, the previous
748ones are automatically kept.  Two commands can be used to access older error
749lists.  They set one of the existing error lists as the current one.
750
751						*:colder* *:col* *E380*
752:col[der] [count]	Go to older error list.  When [count] is given, do
753			this [count] times.  When already at the oldest error
754			list, an error message is given.
755
756						*:lolder* *:lol*
757:lol[der] [count]	Same as `:colder`, except use the location list for
758			the current window instead of the quickfix list.
759
760						*:cnewer* *:cnew* *E381*
761:cnew[er] [count]	Go to newer error list.  When [count] is given, do
762			this [count] times.  When already at the newest error
763			list, an error message is given.
764
765						*:lnewer* *:lnew*
766:lnew[er] [count]	Same as `:cnewer`, except use the location list for
767			the current window instead of the quickfix list.
768
769						*:chistory* *:chi*
770:chi[story]		Show the list of error lists.  The current list is
771			marked with ">".  The output looks like:
772				  error list 1 of 3; 43 errors ~
773				> error list 2 of 3; 0 errors ~
774				  error list 3 of 3; 15 errors ~
775
776						*:lhistory* *:lhi*
777:lhi[story]		Show the list of location lists, otherwise like
778			`:chistory`.
779
780When adding a new error list, it becomes the current list.
781
782When ":colder" has been used and ":make" or ":grep" is used to add a new error
783list, one newer list is overwritten.  This is especially useful if you are
784browsing with ":grep" |grep|.  If you want to keep the more recent error
785lists, use ":cnewer 99" first.
786
787To get the number of lists in the quickfix and location list stack, you can
788use the |getqflist()| and |getloclist()| functions respectively with the list
789number set to the special value '$'. Examples: >
790	echo getqflist({'nr' : '$'}).nr
791	echo getloclist(3, {'nr' : '$'}).nr
792To get the number of the current list in the stack: >
793	echo getqflist({'nr' : 0}).nr
794<
795=============================================================================
7964. Using :make						*:make_makeprg*
797
798							*:mak* *:make*
799:mak[e][!] [arguments]	1. All relevant |QuickFixCmdPre| autocommands are
800			   executed.
801			2. If the 'autowrite' option is on, write any changed
802			   buffers
803			3. An errorfile name is made from 'makeef'.  If
804			   'makeef' doesn't contain "##", and a file with this
805			   name already exists, it is deleted.
806			4. The program given with the 'makeprg' option is
807			   started (default "make") with the optional
808			   [arguments] and the output is saved in the
809			   errorfile (for Unix it is also echoed on the
810			   screen).
811			5. The errorfile is read using 'errorformat'.
812			6. All relevant |QuickFixCmdPost| autocommands are
813			   executed.  See example below.
814			7. If [!] is not given the first error is jumped to.
815			8. The errorfile is deleted.
816			9. You can now move through the errors with commands
817			   like |:cnext| and |:cprevious|, see above.
818			This command does not accept a comment, any "
819			characters are considered part of the arguments.
820			If the encoding of the program output differs from the
821			'encoding' option, you can use the 'makeencoding'
822			option to specify the encoding.
823
824							*:lmak* *:lmake*
825:lmak[e][!] [arguments]
826			Same as ":make", except the location list for the
827			current window is used instead of the quickfix list.
828
829The ":make" command executes the command given with the 'makeprg' option.
830This is done by passing the command to the shell given with the 'shell'
831option.  This works almost like typing
832
833	":!{makeprg} [arguments] {shellpipe} {errorfile}".
834
835{makeprg} is the string given with the 'makeprg' option.  Any command can be
836used, not just "make".  Characters '%' and '#' are expanded as usual on a
837command-line.  You can use "%<" to insert the current file name without
838extension, or "#<" to insert the alternate file name without extension, for
839example: >
840   :set makeprg=make\ #<.o
841
842[arguments] is anything that is typed after ":make".
843{shellpipe} is the 'shellpipe' option.
844{errorfile} is the 'makeef' option, with ## replaced to make it unique.
845
846The placeholder "$*" can be used for the argument list in {makeprg} if the
847command needs some additional characters after its arguments.  The $* is
848replaced then by all arguments.  Example: >
849   :set makeprg=latex\ \\\\nonstopmode\ \\\\input\\{$*}
850or simpler >
851   :let &mp = 'latex \\nonstopmode \\input\{$*}'
852"$*" can be given multiple times, for example: >
853   :set makeprg=gcc\ -o\ $*\ $*
854
855The 'shellpipe' option defaults to ">" for the Amiga, MS-DOS and Win32.  This
856means that the output of the compiler is saved in a file and not shown on the
857screen directly.  For Unix "| tee" is used.  The compiler output is shown on
858the screen and saved in a file the same time.  Depending on the shell used
859"|& tee" or "2>&1| tee" is the default, so stderr output will be included.
860
861If 'shellpipe' is empty, the {errorfile} part will be omitted.  This is useful
862for compilers that write to an errorfile themselves (e.g., Manx's Amiga C).
863
864
865Using QuickFixCmdPost to fix the encoding ~
866
867It may be that 'encoding' is set to an encoding that differs from the messages
868your build program produces.  This example shows how to fix this after Vim has
869read the error messages: >
870
871	function QfMakeConv()
872	   let qflist = getqflist()
873	   for i in qflist
874	      let i.text = iconv(i.text, "cp936", "utf-8")
875	   endfor
876	   call setqflist(qflist)
877	endfunction
878
879	au QuickfixCmdPost make call QfMakeConv()
880
881(Example by Faque Cheng)
882Another option is using 'makeencoding'.
883
884==============================================================================
8855. Using :vimgrep and :grep				*grep* *lid*
886
887Vim has two ways to find matches for a pattern: Internal and external.  The
888advantage of the internal grep is that it works on all systems and uses the
889powerful Vim search patterns.  An external grep program can be used when the
890Vim grep does not do what you want.
891
892The internal method will be slower, because files are read into memory.  The
893advantages are:
894- Line separators and encoding are automatically recognized, as if a file is
895  being edited.
896- Uses Vim search patterns.  Multi-line patterns can be used.
897- When plugins are enabled: compressed and remote files can be searched.
898	|gzip| |netrw|
899
900To be able to do this Vim loads each file as if it is being edited.  When
901there is no match in the file the associated buffer is wiped out again.  The
902'hidden' option is ignored here to avoid running out of memory or file
903descriptors when searching many files.  However, when the |:hide| command
904modifier is used the buffers are kept loaded.  This makes following searches
905in the same files a lot faster.
906
907Note that |:copen| (or |:lopen| for |:lgrep|) may be used to open a buffer
908containing the search results in linked form.  The |:silent| command may be
909used to suppress the default full screen grep output.  The ":grep!" form of
910the |:grep| command doesn't jump to the first match automatically.  These
911commands can be combined to create a NewGrep command: >
912
913        command! -nargs=+ NewGrep execute 'silent grep! <args>' | copen 42
914
915
9165.1 using Vim's internal grep
917
918					*:vim* *:vimgrep* *E682* *E683*
919:vim[grep][!] /{pattern}/[g][j] {file} ...
920			Search for {pattern} in the files {file} ... and set
921			the error list to the matches.  Files matching
922			'wildignore' are ignored; files in 'suffixes' are
923			searched last.
924			Without the 'g' flag each line is added only once.
925			With 'g' every match is added.
926
927			{pattern} is a Vim search pattern.  Instead of
928			enclosing it in / any non-ID character (see
929			|'isident'|) can be used, so long as it does not
930			appear in {pattern}.
931			'ignorecase' applies.  To overrule it put |/\c| in the
932			pattern to ignore case or |/\C| to match case.
933			'smartcase' is not used.
934			If {pattern} is empty (e.g. // is specified), the last
935			used search pattern is used. |last-pattern|
936:{count}vim[grep] ...
937			When a number is put before the command this is used
938			as the maximum number of matches to find.  Use
939			":1vimgrep pattern file" to find only the first.
940			Useful if you only want to check if there is a match
941			and quit quickly when it's found.
942
943			Without the 'j' flag Vim jumps to the first match.
944			With 'j' only the quickfix list is updated.
945			With the [!] any changes in the current buffer are
946			abandoned.
947
948			Every second or so the searched file name is displayed
949			to give you an idea of the progress made.
950			Examples: >
951				:vimgrep /an error/ *.c
952				:vimgrep /\<FileName\>/ *.h include/*
953				:vimgrep /myfunc/ **/*.c
954<			For the use of "**" see |starstar-wildcard|.
955
956:vim[grep][!] {pattern} {file} ...
957			Like above, but instead of enclosing the pattern in a
958			non-ID character use a white-separated pattern.  The
959			pattern must start with an ID character.
960			Example: >
961				:vimgrep Error *.c
962<
963							*:lv* *:lvimgrep*
964:lv[imgrep][!] /{pattern}/[g][j] {file} ...
965:lv[imgrep][!] {pattern} {file} ...
966			Same as ":vimgrep", except the location list for the
967			current window is used instead of the quickfix list.
968
969						*:vimgrepa* *:vimgrepadd*
970:vimgrepa[dd][!] /{pattern}/[g][j] {file} ...
971:vimgrepa[dd][!] {pattern} {file} ...
972			Just like ":vimgrep", but instead of making a new list
973			of errors the matches are appended to the current
974			list.
975
976						*:lvimgrepa* *:lvimgrepadd*
977:lvimgrepa[dd][!] /{pattern}/[g][j] {file} ...
978:lvimgrepa[dd][!] {pattern} {file} ...
979			Same as ":vimgrepadd", except the location list for
980			the current window is used instead of the quickfix
981			list.
982
9835.2 External grep
984
985Vim can interface with "grep" and grep-like programs (such as the GNU
986id-utils) in a similar way to its compiler integration (see |:make| above).
987
988[Unix trivia: The name for the Unix "grep" command comes from ":g/re/p", where
989"re" stands for Regular Expression.]
990
991							    *:gr* *:grep*
992:gr[ep][!] [arguments]	Just like ":make", but use 'grepprg' instead of
993			'makeprg' and 'grepformat' instead of 'errorformat'.
994			When 'grepprg' is "internal" this works like
995			|:vimgrep|.  Note that the pattern needs to be
996			enclosed in separator characters then.
997			If the encoding of the program output differs from the
998			'encoding' option, you can use the 'makeencoding'
999			option to specify the encoding.
1000
1001							    *:lgr* *:lgrep*
1002:lgr[ep][!] [arguments]	Same as ":grep", except the location list for the
1003			current window is used instead of the quickfix list.
1004
1005							*:grepa* *:grepadd*
1006:grepa[dd][!] [arguments]
1007			Just like ":grep", but instead of making a new list of
1008			errors the matches are appended to the current list.
1009			Example: >
1010				:call setqflist([])
1011				:bufdo grepadd! something %
1012<			The first command makes a new error list which is
1013			empty.  The second command executes "grepadd" for each
1014			listed buffer.  Note the use of ! to avoid that
1015			":grepadd" jumps to the first error, which is not
1016			allowed with |:bufdo|.
1017			An example that uses the argument list and avoids
1018			errors for files without matches: >
1019                                :silent argdo try
1020				  \ | grepadd! something %
1021				  \ | catch /E480:/
1022				  \ | endtry"
1023<
1024			If the encoding of the program output differs from the
1025			'encoding' option, you can use the 'makeencoding'
1026			option to specify the encoding.
1027
1028							*:lgrepa* *:lgrepadd*
1029:lgrepa[dd][!] [arguments]
1030			Same as ":grepadd", except the location list for the
1031			current window is used instead of the quickfix list.
1032
10335.3 Setting up external grep
1034
1035If you have a standard "grep" program installed, the :grep command may work
1036well with the defaults.  The syntax is very similar to the standard command: >
1037
1038	:grep foo *.c
1039
1040Will search all files with the .c extension for the substring "foo".  The
1041arguments to :grep are passed straight to the "grep" program, so you can use
1042whatever options your "grep" supports.
1043
1044By default, :grep invokes grep with the -n option (show file and line
1045numbers).  You can change this with the 'grepprg' option.  You will need to set
1046'grepprg' if:
1047
1048a)	You are using a program that isn't called "grep"
1049b)	You have to call grep with a full path
1050c)	You want to pass other options automatically (e.g. case insensitive
1051	search.)
1052
1053Once "grep" has executed, Vim parses the results using the 'grepformat'
1054option.  This option works in the same way as the 'errorformat' option - see
1055that for details.  You may need to change 'grepformat' from the default if
1056your grep outputs in a non-standard format, or you are using some other
1057program with a special format.
1058
1059Once the results are parsed, Vim loads the first file containing a match and
1060jumps to the appropriate line, in the same way that it jumps to a compiler
1061error in |quickfix| mode.  You can then use the |:cnext|, |:clist|, etc.
1062commands to see the other matches.
1063
1064
10655.4 Using :grep with id-utils
1066
1067You can set up :grep to work with the GNU id-utils like this: >
1068
1069	:set grepprg=lid\ -Rgrep\ -s
1070	:set grepformat=%f:%l:%m
1071
1072then >
1073	:grep (regexp)
1074
1075works just as you'd expect.
1076(provided you remembered to mkid first :)
1077
1078
10795.5 Browsing source code with :vimgrep or :grep
1080
1081Using the stack of error lists that Vim keeps, you can browse your files to
1082look for functions and the functions they call.  For example, suppose that you
1083have to add an argument to the read_file() function.  You enter this command: >
1084
1085	:vimgrep /\<read_file\>/ *.c
1086
1087You use ":cn" to go along the list of matches and add the argument.  At one
1088place you have to get the new argument from a higher level function msg(), and
1089need to change that one too.  Thus you use: >
1090
1091	:vimgrep /\<msg\>/ *.c
1092
1093While changing the msg() functions, you find another function that needs to
1094get the argument from a higher level.  You can again use ":vimgrep" to find
1095these functions.  Once you are finished with one function, you can use >
1096
1097	:colder
1098
1099to go back to the previous one.
1100
1101This works like browsing a tree: ":vimgrep" goes one level deeper, creating a
1102list of branches.  ":colder" goes back to the previous level.  You can mix
1103this use of ":vimgrep" and "colder" to browse all the locations in a tree-like
1104way.  If you do this consistently, you will find all locations without the
1105need to write down a "todo" list.
1106
1107=============================================================================
11086. Selecting a compiler					*compiler-select*
1109
1110						*:comp* *:compiler* *E666*
1111:comp[iler][!] {name}		Set options to work with compiler {name}.
1112				Without the "!" options are set for the
1113				current buffer.  With "!" global options are
1114				set.
1115				If you use ":compiler foo" in "file.foo" and
1116				then ":compiler! bar" in another buffer, Vim
1117				will keep on using "foo" in "file.foo".
1118				{not available when compiled without the
1119				|+eval| feature}
1120
1121
1122The Vim plugins in the "compiler" directory will set options to use the
1123selected compiler.  For `:compiler` local options are set, for `:compiler!`
1124global options.
1125							*current_compiler*
1126To support older Vim versions, the plugins always use "current_compiler" and
1127not "b:current_compiler".  What the command actually does is the following:
1128
1129- Delete the "current_compiler" and "b:current_compiler" variables.
1130- Define the "CompilerSet" user command.  With "!" it does ":set", without "!"
1131  it does ":setlocal".
1132- Execute ":runtime! compiler/{name}.vim".  The plugins are expected to set
1133  options with "CompilerSet" and set the "current_compiler" variable to the
1134  name of the compiler.
1135- Delete the "CompilerSet" user command.
1136- Set "b:current_compiler" to the value of "current_compiler".
1137- Without "!" the old value of "current_compiler" is restored.
1138
1139
1140For writing a compiler plugin, see |write-compiler-plugin|.
1141
1142
1143GCC					*quickfix-gcc*	*compiler-gcc*
1144
1145There's one variable you can set for the GCC compiler:
1146
1147g:compiler_gcc_ignore_unmatched_lines
1148				Ignore lines that don't match any patterns
1149				defined for GCC.  Useful if output from
1150				commands run from make are generating false
1151				positives.
1152
1153
1154MANX AZTEC C				*quickfix-manx* *compiler-manx*
1155
1156To use Vim with Manx's Aztec C compiler on the Amiga you should do the
1157following:
1158- Set the CCEDIT environment variable with the command: >
1159	mset "CCEDIT=vim -q"
1160- Compile with the -qf option.  If the compiler finds any errors, Vim is
1161  started and the cursor is positioned on the first error.  The error message
1162  will be displayed on the last line.  You can go to other errors with the
1163  commands mentioned above.  You can fix the errors and write the file(s).
1164- If you exit Vim normally the compiler will re-compile the same file.  If you
1165  exit with the :cq command, the compiler will terminate.  Do this if you
1166  cannot fix the error, or if another file needs to be compiled first.
1167
1168There are some restrictions to the Quickfix mode on the Amiga.  The
1169compiler only writes the first 25 errors to the errorfile (Manx's
1170documentation does not say how to get more).  If you want to find the others,
1171you will have to fix a few errors and exit the editor.  After recompiling,
1172up to 25 remaining errors will be found.
1173
1174If Vim was started from the compiler, the :sh and some :!  commands will not
1175work, because Vim is then running in the same process as the compiler and
1176stdin (standard input) will not be interactive.
1177
1178
1179PERL					*quickfix-perl* *compiler-perl*
1180
1181The Perl compiler plugin doesn't actually compile, but invokes Perl's internal
1182syntax checking feature and parses the output for possible errors so you can
1183correct them in quick-fix mode.
1184
1185Warnings are forced regardless of "no warnings" or "$^W = 0" within the file
1186being checked.  To disable this set g:perl_compiler_force_warnings to a zero
1187value.  For example: >
1188	let g:perl_compiler_force_warnings = 0
1189
1190
1191PYUNIT COMPILER						*compiler-pyunit*
1192
1193This is not actually a compiler, but a unit testing framework for the
1194Python language.  It is included into standard Python distribution
1195starting from version 2.0.  For older versions, you can get it from
1196http://pyunit.sourceforge.net.
1197
1198When you run your tests with the help of the framework, possible errors
1199are parsed by Vim and presented for you in quick-fix mode.
1200
1201Unfortunately, there is no standard way to run the tests.
1202The alltests.py script seems to be used quite often, that's all.
1203Useful values for the 'makeprg' options therefore are:
1204 setlocal makeprg=./alltests.py " Run a testsuite
1205 setlocal makeprg=python\ %:S   " Run a single testcase
1206
1207Also see http://vim.sourceforge.net/tip_view.php?tip_id=280.
1208
1209
1210TEX COMPILER						*compiler-tex*
1211
1212Included in the distribution compiler for TeX ($VIMRUNTIME/compiler/tex.vim)
1213uses make command if possible.  If the compiler finds a file named "Makefile"
1214or "makefile" in the current directory, it supposes that you want to process
1215your *TeX files with make, and the makefile does the right work.  In this case
1216compiler sets 'errorformat' for *TeX output and leaves 'makeprg' untouched.  If
1217neither "Makefile" nor "makefile" is found, the compiler will not use make.
1218You can force the compiler to ignore makefiles by defining
1219b:tex_ignore_makefile or g:tex_ignore_makefile variable (they are checked for
1220existence only).
1221
1222If the compiler chose not to use make, it need to choose a right program for
1223processing your input.  If b:tex_flavor or g:tex_flavor (in this precedence)
1224variable exists, it defines TeX flavor for :make (actually, this is the name
1225of executed command), and if both variables do not exist, it defaults to
1226"latex".  For example, while editing chapter2.tex \input-ed from mypaper.tex
1227written in AMS-TeX: >
1228
1229	:let b:tex_flavor = 'amstex'
1230	:compiler tex
1231<	[editing...] >
1232	:make mypaper
1233
1234Note that you must specify a name of the file to process as an argument (to
1235process the right file when editing \input-ed or \include-ed file; portable
1236solution for substituting % for no arguments is welcome).  This is not in the
1237semantics of make, where you specify a target, not source, but you may specify
1238filename without extension ".tex" and mean this as "make filename.dvi or
1239filename.pdf or filename.some_result_extension according to compiler".
1240
1241Note: tex command line syntax is set to usable both for MikTeX (suggestion
1242by Srinath Avadhanula) and teTeX (checked by Artem Chuprina).  Suggestion
1243from |errorformat-LaTeX| is too complex to keep it working for different
1244shells and OSes and also does not allow to use other available TeX options,
1245if any.  If your TeX doesn't support "-interaction=nonstopmode", please
1246report it with different means to express \nonstopmode from the command line.
1247
1248=============================================================================
12497. The error format					*error-file-format*
1250
1251					*errorformat* *E372* *E373* *E374*
1252						*E375* *E376* *E377* *E378*
1253The 'errorformat' option specifies a list of formats that are recognized.  The
1254first format that matches with an error message is used.  You can add several
1255formats for different messages your compiler produces, or even entries for
1256multiple compilers.  See |efm-entries|.
1257
1258Each entry in 'errorformat' is a scanf-like string that describes the format.
1259First, you need to know how scanf works.  Look in the documentation of your
1260C compiler.  Below you find the % items that Vim understands.  Others are
1261invalid.
1262
1263Special characters in 'errorformat' are comma and backslash.  See
1264|efm-entries| for how to deal with them.  Note that a literal "%" is matched
1265by "%%", thus it is not escaped with a backslash.
1266Keep in mind that in the `:make` and `:grep` output all NUL characters are
1267replaced with SOH (0x01).
1268
1269Note: By default the difference between upper and lowercase is ignored.  If
1270you want to match case, add "\C" to the pattern |/\C|.
1271
1272
1273Basic items
1274
1275	%f		file name (finds a string)
1276	%o		module name (finds a string)
1277	%l		line number (finds a number)
1278	%c		column number (finds a number representing character
1279			column of the error, (1 <tab> == 1 character column))
1280	%v		virtual column number (finds a number representing
1281			screen column of the error (1 <tab> == 8 screen
1282			columns))
1283	%t		error type (finds a single character)
1284	%n		error number (finds a number)
1285	%m		error message (finds a string)
1286	%r		matches the "rest" of a single-line file message %O/P/Q
1287	%p		pointer line (finds a sequence of '-', '.', ' ' or
1288			tabs and uses the length for the column number)
1289	%*{conv}	any scanf non-assignable conversion
1290	%%		the single '%' character
1291	%s		search text (finds a string)
1292
1293The "%f" conversion may depend on the current 'isfname' setting.  "~/" is
1294expanded to the home directory and environment variables are expanded.
1295
1296The "%f" and "%m" conversions have to detect the end of the string.  This
1297normally happens by matching following characters and items.  When nothing is
1298following the rest of the line is matched.  If "%f" is followed by a '%' or a
1299backslash, it will look for a sequence of 'isfname' characters.
1300
1301On MS-DOS, MS-Windows and OS/2 a leading "C:" will be included in "%f", even
1302when using "%f:".  This means that a file name which is a single alphabetical
1303letter will not be detected.
1304
1305The "%p" conversion is normally followed by a "^".  It's used for compilers
1306that output a line like: >
1307	    ^
1308or >
1309   ---------^
1310to indicate the column of the error.  This is to be used in a multi-line error
1311message.  See |errorformat-javac| for a  useful example.
1312
1313The "%s" conversion specifies the text to search for, to locate the error line.
1314The text is used as a literal string.  The anchors "^" and "$" are added to
1315the text to locate the error line exactly matching the search text and the
1316text is prefixed with the "\V" atom to make it "very nomagic".  The "%s"
1317conversion can be used to locate lines without a line number in the error
1318output.  Like the output of the "grep" shell command.
1319When the pattern is present the line number will not be used.
1320
1321The "%o" conversion specifies the module name in quickfix entry.  If present
1322it will be used in quickfix error window instead of the filename.  The module
1323name is used only for displaying purposes, the file name is used when jumping
1324to the file.
1325
1326Changing directory
1327
1328The following uppercase conversion characters specify the type of special
1329format strings.  At most one of them may be given as a prefix at the beginning
1330of a single comma-separated format pattern.
1331Some compilers produce messages that consist of directory names that have to
1332be prepended to each file name read by %f (example: GNU make).  The following
1333codes can be used to scan these directory names; they will be stored in an
1334internal directory stack.					*E379*
1335	%D		"enter directory" format string; expects a following
1336			  %f that finds the directory name
1337	%X		"leave directory" format string; expects following %f
1338
1339When defining an "enter directory" or "leave directory" format, the "%D" or
1340"%X" has to be given at the start of that substring.  Vim tracks the directory
1341changes and prepends the current directory to each erroneous file found with a
1342relative path.  See |quickfix-directory-stack| for details, tips and
1343limitations.
1344
1345
1346Multi-line messages				*errorformat-multi-line*
1347
1348It is possible to read the output of programs that produce multi-line
1349messages, i.e. error strings that consume more than one line.  Possible
1350prefixes are:
1351	%E		start of a multi-line error message
1352	%W		start of a multi-line warning message
1353	%I		start of a multi-line informational message
1354	%A		start of a multi-line message (unspecified type)
1355	%>		for next line start with current pattern again |efm-%>|
1356	%C		continuation of a multi-line message
1357	%Z		end of a multi-line message
1358These can be used with '+' and '-', see |efm-ignore| below.
1359
1360Using "\n" in the pattern won't work to match multi-line messages.
1361
1362Example: Your compiler happens to write out errors in the following format
1363(leading line numbers not being part of the actual output):
1364
1365     1	Error 275 ~
1366     2	line 42 ~
1367     3	column 3 ~
1368     4	' ' expected after '--' ~
1369
1370The appropriate error format string has to look like this: >
1371   :set efm=%EError\ %n,%Cline\ %l,%Ccolumn\ %c,%Z%m
1372
1373And the |:clist| error message generated for this error is:
1374
1375 1:42 col 3 error 275:  ' ' expected after '--'
1376
1377Another example: Think of a Python interpreter that produces the following
1378error message (line numbers are not part of the actual output):
1379
1380     1	==============================================================
1381     2	FAIL: testGetTypeIdCachesResult (dbfacadeTest.DjsDBFacadeTest)
1382     3	--------------------------------------------------------------
1383     4	Traceback (most recent call last):
1384     5	  File "unittests/dbfacadeTest.py", line 89, in testFoo
1385     6	    self.assertEquals(34, dtid)
1386     7	  File "/usr/lib/python2.2/unittest.py", line 286, in
1387     8	 failUnlessEqual
1388     9	    raise self.failureException, \
1389    10	AssertionError: 34 != 33
1390    11
1391    12	--------------------------------------------------------------
1392    13	Ran 27 tests in 0.063s
1393
1394Say you want |:clist| write the relevant information of this message only,
1395namely:
1396 5 unittests/dbfacadeTest.py:89:  AssertionError: 34 != 33
1397
1398Then the error format string could be defined as follows: >
1399  :set efm=%C\ %.%#,%A\ \ File\ \"%f\"\\,\ line\ %l%.%#,%Z%[%^\ ]%\\@=%m
1400
1401Note that the %C string is given before the %A here: since the expression
1402' %.%#' (which stands for the regular expression ' .*') matches every line
1403starting with a space, followed by any characters to the end of the line,
1404it also hides line 7 which would trigger a separate error message otherwise.
1405Error format strings are always parsed pattern by pattern until the first
1406match occurs.
1407							*efm-%>*
1408The %> item can be used to avoid trying patterns that appear earlier in
1409'errorformat'.  This is useful for patterns that match just about anything.
1410For example, if the error looks like this:
1411
1412	Error in line 123 of foo.c: ~
1413	unknown variable "i" ~
1414
1415This can be found with: >
1416	:set efm=xxx,%E%>Error in line %l of %f:,%Z%m
1417Where "xxx" has a pattern that would also match the second line.
1418
1419Important: There is no memory of what part of the errorformat matched before;
1420every line in the error file gets a complete new run through the error format
1421lines.  For example, if one has: >
1422  setlocal efm=aa,bb,cc,dd,ee
1423Where aa, bb, etc. are error format strings.  Each line of the error file will
1424be matched to the pattern aa, then bb, then cc, etc.  Just because cc matched
1425the previous error line does _not_ mean that dd will be tried first on the
1426current line, even if cc and dd are multi-line errorformat strings.
1427
1428
1429
1430Separate file name			*errorformat-separate-filename*
1431
1432These prefixes are useful if the file name is given once and multiple messages
1433follow that refer to this file name.
1434	%O		single-line file message: overread the matched part
1435	%P		single-line file message: push file %f onto the stack
1436	%Q		single-line file message: pop the last file from stack
1437
1438Example: Given a compiler that produces the following error logfile (without
1439leading line numbers):
1440
1441     1	[a1.tt]
1442     2	(1,17)  error: ';' missing
1443     3	(21,2)  warning: variable 'z' not defined
1444     4	(67,3)  error: end of file found before string ended
1445     5
1446     6	[a2.tt]
1447     7
1448     8	[a3.tt]
1449     9	NEW compiler v1.1
1450    10	(2,2)   warning: variable 'x' not defined
1451    11	(67,3)  warning: 's' already defined
1452
1453This logfile lists several messages for each file enclosed in [...] which are
1454properly parsed by an error format like this: >
1455  :set efm=%+P[%f],(%l\\,%c)%*[\ ]%t%*[^:]:\ %m,%-Q
1456
1457A call of |:clist| writes them accordingly with their correct filenames:
1458
1459  2 a1.tt:1 col 17 error: ';' missing
1460  3 a1.tt:21 col 2 warning: variable 'z' not defined
1461  4 a1.tt:67 col 3 error: end of file found before string ended
1462  8 a3.tt:2 col 2 warning: variable 'x' not defined
1463  9 a3.tt:67 col 3 warning: 's' already defined
1464
1465Unlike the other prefixes that all match against whole lines, %P, %Q and %O
1466can be used to match several patterns in the same line.  Thus it is possible
1467to parse even nested files like in the following line:
1468  {"file1" {"file2" error1} error2 {"file3" error3 {"file4" error4 error5}}}
1469The %O then parses over strings that do not contain any push/pop file name
1470information.  See |errorformat-LaTeX| for an extended example.
1471
1472
1473Ignoring and using whole messages			*efm-ignore*
1474
1475The codes '+' or '-' can be combined with the uppercase codes above; in that
1476case they have to precede the letter, e.g. '%+A' or '%-G':
1477	%-		do not include the matching multi-line in any output
1478	%+		include the whole matching line in the %m error string
1479
1480One prefix is only useful in combination with '+' or '-', namely %G.  It parses
1481over lines containing general information like compiler version strings or
1482other headers that can be skipped.
1483	%-G		ignore this message
1484	%+G		general message
1485
1486
1487Pattern matching
1488
1489The scanf()-like "%*[]" notation is supported for backward-compatibility
1490with previous versions of Vim.  However, it is also possible to specify
1491(nearly) any Vim supported regular expression in format strings.
1492Since meta characters of the regular expression language can be part of
1493ordinary matching strings or file names (and therefore internally have to
1494be escaped), meta symbols have to be written with leading '%':
1495	%\		The single '\' character.  Note that this has to be
1496			escaped ("%\\") in ":set errorformat=" definitions.
1497	%.		The single '.' character.
1498	%#		The single '*'(!) character.
1499	%^		The single '^' character.  Note that this is not
1500			useful, the pattern already matches start of line.
1501	%$		The single '$' character.  Note that this is not
1502			useful, the pattern already matches end of line.
1503	%[		The single '[' character for a [] character range.
1504	%~		The single '~' character.
1505When using character classes in expressions (see |/\i| for an overview),
1506terms containing the "\+" quantifier can be written in the scanf() "%*"
1507notation.  Example: "%\\d%\\+" ("\d\+", "any number") is equivalent to "%*\\d".
1508Important note: The \(...\) grouping of sub-matches can not be used in format
1509specifications because it is reserved for internal conversions.
1510
1511
1512Multiple entries in 'errorformat'			*efm-entries*
1513
1514To be able to detect output from several compilers, several format patterns
1515may be put in 'errorformat', separated by commas (note: blanks after the comma
1516are ignored).  The first pattern that has a complete match is used.  If no
1517match is found, matching parts from the last one will be used, although the
1518file name is removed and the error message is set to the whole message.  If
1519there is a pattern that may match output from several compilers (but not in a
1520right way), put it after one that is more restrictive.
1521
1522To include a comma in a pattern precede it with a backslash (you have to type
1523two in a ":set" command).  To include a backslash itself give two backslashes
1524(you have to type four in a ":set" command).  You also need to put a backslash
1525before a space for ":set".
1526
1527
1528Valid matches						*quickfix-valid*
1529
1530If a line does not completely match one of the entries in 'errorformat', the
1531whole line is put in the error message and the entry is marked "not valid"
1532These lines are skipped with the ":cn" and ":cp" commands (unless there is
1533no valid line at all).  You can use ":cl!" to display all the error messages.
1534
1535If the error format does not contain a file name Vim cannot switch to the
1536correct file.  You will have to do this by hand.
1537
1538
1539Examples
1540
1541The format of the file from the Amiga Aztec compiler is:
1542
1543	filename>linenumber:columnnumber:errortype:errornumber:errormessage
1544
1545	filename	name of the file in which the error was detected
1546	linenumber	line number where the error was detected
1547	columnnumber	column number where the error was detected
1548	errortype	type of the error, normally a single 'E' or 'W'
1549	errornumber	number of the error (for lookup in the manual)
1550	errormessage	description of the error
1551
1552This can be matched with this 'errorformat' entry:
1553	%f>%l:%c:%t:%n:%m
1554
1555Some examples for C compilers that produce single-line error outputs:
1556%f:%l:\ %t%*[^0123456789]%n:\ %m	for Manx/Aztec C error messages
1557					(scanf() doesn't understand [0-9])
1558%f\ %l\ %t%*[^0-9]%n:\ %m		for SAS C
1559\"%f\"\\,%*[^0-9]%l:\ %m		for generic C compilers
1560%f:%l:\ %m				for GCC
1561%f:%l:\ %m,%Dgmake[%*\\d]:\ Entering\ directory\ `%f',
1562%Dgmake[%*\\d]:\ Leaving\ directory\ `%f'
1563					for GCC with gmake (concat the lines!)
1564%f(%l)\ :\ %*[^:]:\ %m			old SCO C compiler (pre-OS5)
1565%f(%l)\ :\ %t%*[^0-9]%n:\ %m		idem, with error type and number
1566%f:%l:\ %m,In\ file\ included\ from\ %f:%l:,\^I\^Ifrom\ %f:%l%m
1567					for GCC, with some extras
1568
1569Extended examples for the handling of multi-line messages are given below,
1570see |errorformat-Jikes| and |errorformat-LaTeX|.
1571
1572Note the backslash in front of a space and double quote.  It is required for
1573the :set command.  There are two backslashes in front of a comma, one for the
1574:set command and one to avoid recognizing the comma as a separator of error
1575formats.
1576
1577
1578Filtering messages
1579
1580If you have a compiler that produces error messages that do not fit in the
1581format string, you could write a program that translates the error messages
1582into this format.  You can use this program with the ":make" command by
1583changing the 'makeprg' option.  For example: >
1584   :set mp=make\ \\\|&\ error_filter
1585The backslashes before the pipe character are required to avoid it to be
1586recognized as a command separator.  The backslash before each space is
1587required for the set command.
1588
1589				    *cfilter-plugin* *:Cfilter* *:Lfilter*
1590If you have too many matching messages, you can use the cfilter plugin to
1591reduce the number of entries.  Load the plugin with: >
1592   packadd cfilter
1593
1594Then you can use these command: >
1595   :Cfilter[!] /{pat}/
1596   :Lfilter[!] /{pat}/
1597
1598:Cfilter creates a new quickfix list from entries matching {pat} in the
1599current quickfix list. Both the file name and the text of the entries are
1600matched against {pat}. If ! is supplied, then entries not matching {pat} are
1601used.
1602
1603:Lfilter does the same as :Cfilter but operates on the current location list.
1604
1605=============================================================================
16068. The directory stack				*quickfix-directory-stack*
1607
1608Quickfix maintains a stack for saving all used directories parsed from the
1609make output.  For GNU-make this is rather simple, as it always prints the
1610absolute path of all directories it enters and leaves.  Regardless if this is
1611done via a 'cd' command in the makefile or with the parameter "-C dir" (change
1612to directory before reading the makefile).  It may be useful to use the switch
1613"-w" to force GNU-make to print out the working directory before and after
1614processing.
1615
1616Maintaining the correct directory is more complicated if you don't use
1617GNU-make.  AIX-make for example doesn't print any information about its
1618working directory.  Then you need to enhance the makefile.  In the makefile of
1619LessTif there is a command which echoes "Making {target} in {dir}".  The
1620special problem here is that it doesn't print information on leaving the
1621directory and that it doesn't print the absolute path.
1622
1623To solve the problem with relative paths and missing "leave directory"
1624messages Vim uses following algorithm:
1625
16261) Check if the given directory is a subdirectory of the current directory.
1627   If this is true, store it as the current directory.
16282) If it is not a subdir of the current directory, try if this is a
1629   subdirectory of one of the upper directories.
16303) If the directory still isn't found, it is assumed to be a subdirectory
1631   of Vim's current directory.
1632
1633Additionally it is checked for every file, if it really exists in the
1634identified directory.  If not, it is searched in all other directories of the
1635directory stack (NOT the directory subtree!).  If it is still not found, it is
1636assumed that it is in Vim's current directory.
1637
1638There are limitations in this algorithm.  These examples assume that make just
1639prints information about entering a directory in the form "Making all in dir".
1640
16411) Assume you have following directories and files:
1642   ./dir1
1643   ./dir1/file1.c
1644   ./file1.c
1645
1646   If make processes the directory "./dir1" before the current directory and
1647   there is an error in the file "./file1.c", you will end up with the file
1648   "./dir1/file.c" loaded by Vim.
1649
1650   This can only be solved with a "leave directory" message.
1651
16522) Assume you have following directories and files:
1653   ./dir1
1654   ./dir1/dir2
1655   ./dir2
1656
1657   You get the following:
1658
1659   Make output			  Directory interpreted by Vim
1660   ------------------------	  ----------------------------
1661   Making all in dir1		  ./dir1
1662   Making all in dir2		  ./dir1/dir2
1663   Making all in dir2		  ./dir1/dir2
1664
1665   This can be solved by printing absolute directories in the "enter directory"
1666   message or by printing "leave directory" messages.
1667
1668To avoid this problem, ensure to print absolute directory names and "leave
1669directory" messages.
1670
1671Examples for Makefiles:
1672
1673Unix:
1674    libs:
1675	    for dn in $(LIBDIRS); do				\
1676		(cd $$dn; echo "Entering dir '$$(pwd)'"; make); \
1677		echo "Leaving dir";				\
1678	    done
1679
1680Add
1681    %DEntering\ dir\ '%f',%XLeaving\ dir
1682to your 'errorformat' to handle the above output.
1683
1684Note that Vim doesn't check if the directory name in a "leave directory"
1685messages is the current directory.  This is why you could just use the message
1686"Leaving dir".
1687
1688=============================================================================
16899. Specific error file formats			*errorformats*
1690
1691						*errorformat-Jikes*
1692Jikes(TM), a source-to-bytecode Java compiler published by IBM Research,
1693produces simple multi-line error messages.
1694
1695An 'errorformat' string matching the produced messages is shown below.
1696The following lines can be placed in the user's |vimrc| to overwrite Vim's
1697recognized default formats, or see |:set+=| how to install this format
1698additionally to the default. >
1699
1700  :set efm=%A%f:%l:%c:%*\\d:%*\\d:,
1701	\%C%*\\s%trror:%m,
1702	\%+C%*[^:]%trror:%m,
1703	\%C%*\\s%tarning:%m,
1704	\%C%m
1705<
1706Jikes(TM) produces a single-line error message when invoked with the option
1707"+E", and can be matched with the following: >
1708
1709  :setl efm=%f:%l:%v:%*\\d:%*\\d:%*\\s%m
1710<
1711						*errorformat-javac*
1712This 'errorformat' has been reported to work well for javac, which outputs a
1713line with "^" to indicate the column of the error: >
1714  :setl efm=%A%f:%l:\ %m,%-Z%p^,%-C%.%#
1715or: >
1716  :setl efm=%A%f:%l:\ %m,%+Z%p^,%+C%.%#,%-G%.%#
1717<
1718Here is an alternative from Michael F. Lamb for Unix that filters the errors
1719first: >
1720  :setl errorformat=%Z%f:%l:\ %m,%A%p^,%-G%*[^sl]%.%#
1721  :setl makeprg=javac\ %:S\ 2>&1\ \\\|\ vim-javac-filter
1722
1723You need to put the following in "vim-javac-filter" somewhere in your path
1724(e.g., in ~/bin) and make it executable: >
1725   #!/bin/sed -f
1726   /\^$/s/\t/\ /g;/:[0-9]\+:/{h;d};/^[ \t]*\^/G;
1727
1728In English, that sed script:
1729- Changes single tabs to single spaces and
1730- Moves the line with the filename, line number, error message to just after
1731  the pointer line. That way, the unused error text between doesn't break
1732  vim's notion of a "multi-line message" and also doesn't force us to include
1733  it as a "continuation of a multi-line message."
1734
1735						*errorformat-ant*
1736For ant (http://jakarta.apache.org/) the above errorformat has to be modified
1737to honour the leading [javac] in front of each javac output line: >
1738  :set efm=%A\ %#[javac]\ %f:%l:\ %m,%-Z\ %#[javac]\ %p^,%-C%.%#
1739
1740The 'errorformat' can also be configured to handle ant together with either
1741javac or jikes.  If you're using jikes, you should tell ant to use jikes' +E
1742command line switch which forces jikes to generate one-line error messages.
1743This is what the second line (of a build.xml file) below does: >
1744  <property name = "build.compiler"       value = "jikes"/>
1745  <property name = "build.compiler.emacs" value = "true"/>
1746
1747The 'errorformat' which handles ant with both javac and jikes is: >
1748  :set efm=\ %#[javac]\ %#%f:%l:%c:%*\\d:%*\\d:\ %t%[%^:]%#:%m,
1749	   \%A\ %#[javac]\ %f:%l:\ %m,%-Z\ %#[javac]\ %p^,%-C%.%#
1750<
1751						*errorformat-jade*
1752parsing jade (see http://www.jclark.com/) errors is simple: >
1753  :set efm=jade:%f:%l:%c:%t:%m
1754<
1755						*errorformat-LaTeX*
1756The following is an example how an 'errorformat' string can be specified
1757for the (La)TeX typesetting system which displays error messages over
1758multiple lines.  The output of ":clist" and ":cc" etc. commands displays
1759multi-lines in a single line, leading white space is removed.
1760It should be easy to adopt the above LaTeX errorformat to any compiler output
1761consisting of multi-line errors.
1762
1763The commands can be placed in a |vimrc| file or some other Vim script file,
1764e.g. a script containing LaTeX related stuff which is loaded only when editing
1765LaTeX sources.
1766Make sure to copy all lines of the example (in the given order), afterwards
1767remove the comment lines.  For the '\' notation at the start of some lines see
1768|line-continuation|.
1769
1770		First prepare 'makeprg' such that LaTeX will report multiple
1771		errors; do not stop when the first error has occurred: >
1772 :set makeprg=latex\ \\\\nonstopmode\ \\\\input\\{$*}
1773<
1774		Start of multi-line error messages: >
1775 :set efm=%E!\ LaTeX\ %trror:\ %m,
1776	\%E!\ %m,
1777<		Start of multi-line warning messages; the first two also
1778		include the line number.  Meaning of some regular expressions:
1779		  - "%.%#"  (".*")   matches a (possibly empty) string
1780		  - "%*\\d" ("\d\+") matches a number >
1781	\%+WLaTeX\ %.%#Warning:\ %.%#line\ %l%.%#,
1782	\%+W%.%#\ at\ lines\ %l--%*\\d,
1783	\%WLaTeX\ %.%#Warning:\ %m,
1784<		Possible continuations of error/warning messages; the first
1785		one also includes the line number: >
1786	\%Cl.%l\ %m,
1787	\%+C\ \ %m.,
1788	\%+C%.%#-%.%#,
1789	\%+C%.%#[]%.%#,
1790	\%+C[]%.%#,
1791	\%+C%.%#%[{}\\]%.%#,
1792	\%+C<%.%#>%.%#,
1793	\%C\ \ %m,
1794<		Lines that match the following patterns do not contain any
1795		important information; do not include them in messages: >
1796	\%-GSee\ the\ LaTeX%m,
1797	\%-GType\ \ H\ <return>%m,
1798	\%-G\ ...%.%#,
1799	\%-G%.%#\ (C)\ %.%#,
1800	\%-G(see\ the\ transcript%.%#),
1801<		Generally exclude any empty or whitespace-only line from
1802		being displayed: >
1803	\%-G\\s%#,
1804<		The LaTeX output log does not specify the names of erroneous
1805		source files per line; rather they are given globally,
1806		enclosed in parentheses.
1807		The following patterns try to match these names and store
1808		them in an internal stack.  The patterns possibly scan over
1809		the same input line (one after another), the trailing "%r"
1810		conversion indicates the "rest" of the line that will be
1811		parsed in the next go until the end of line is reached.
1812
1813		Overread a file name enclosed in '('...')'; do not push it
1814		on a stack since the file apparently does not contain any
1815		error: >
1816	\%+O(%f)%r,
1817<		Push a file name onto the stack.  The name is given after '(': >
1818	\%+P(%f%r,
1819	\%+P\ %\\=(%f%r,
1820	\%+P%*[^()](%f%r,
1821	\%+P[%\\d%[^()]%#(%f%r,
1822<		Pop the last stored file name when a ')' is scanned: >
1823	\%+Q)%r,
1824	\%+Q%*[^()])%r,
1825	\%+Q[%\\d%*[^()])%r
1826
1827Note that in some cases file names in the LaTeX output log cannot be parsed
1828properly.  The parser might have been messed up by unbalanced parentheses
1829then.  The above example tries to catch the most relevant cases only.
1830You can customize the given setting to suit your own purposes, for example,
1831all the annoying "Overfull ..." warnings could be excluded from being
1832recognized as an error.
1833Alternatively to filtering the LaTeX compiler output, it is also possible
1834to directly read the *.log file that is produced by the [La]TeX compiler.
1835This contains even more useful information about possible error causes.
1836However, to properly parse such a complex file, an external filter should
1837be used.  See the description further above how to make such a filter known
1838by Vim.
1839
1840						*errorformat-Perl*
1841In $VIMRUNTIME/tools you can find the efm_perl.pl script, which filters Perl
1842error messages into a format that quickfix mode will understand.  See the
1843start of the file about how to use it.  (This script is deprecated, see
1844|compiler-perl|.)
1845
1846
1847
1848 vim:tw=78:ts=8:noet:ft=help:norl:
1849