Adding upstream version 2:9.1.0016.upstream/2%9.1.0016

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2062 insertions, 0 deletions

diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
new file mode 100644
index 0000000..325f592
--- /dev/null
+++ b/runtime/doc/quickfix.txt
@@ -0,0 +1,2062 @@
+*quickfix.txt*  For Vim version 9.1.  Last change: 2023 Jan 18
+
+
+		  VIM REFERENCE MANUAL    by Bram Moolenaar
+
+
+This subject is introduced in section |30.1| of the user manual.
+
+1. Using QuickFix commands		|quickfix|
+2. The error window			|quickfix-window|
+3. Using more than one list of errors	|quickfix-error-lists|
+4. Using :make				|:make_makeprg|
+5. Using :grep				|grep|
+6. Selecting a compiler			|compiler-select|
+7. The error format			|error-file-format|
+8. The directory stack			|quickfix-directory-stack|
+9. Specific error file formats		|errorformats|
+10. Customizing the quickfix window	|quickfix-window-function|
+
+The quickfix commands are not available when the |+quickfix| feature was
+disabled at compile time.
+
+=============================================================================
+1. Using QuickFix commands			*quickfix* *Quickfix* *E42*
+
+Vim has a special mode to speedup the edit-compile-edit cycle.  This is
+inspired by the quickfix option of the Manx's Aztec C compiler on the Amiga.
+The idea is to save the error messages from the compiler in a file and use Vim
+to jump to the errors one by one.  You can examine each problem and fix it,
+without having to remember all the error messages.
+
+In Vim the quickfix commands are used more generally to find a list of
+positions in files.  For example, |:vimgrep| finds pattern matches.  You can
+use the positions in a script with the |getqflist()| function.  Thus you can
+do a lot more than the edit/compile/fix cycle!
+
+If you have the error messages in a file you can start Vim with: >
+	vim -q filename
+
+From inside Vim an easy way to run a command and handle the output is with the
+|:make| command (see below).
+
+The 'errorformat' option should be set to match the error messages from your
+compiler (see |errorformat| below).
+
+							*quickfix-ID*
+Each quickfix list has a unique identifier called the quickfix ID and this
+number will not change within a Vim session. The |getqflist()| function can be
+used to get the identifier assigned to a list. There is also a quickfix list
+number which may change whenever more than ten lists are added to a quickfix
+stack.
+
+						*location-list* *E776*
+A location list is a window-local quickfix list. You get one after commands
+like `:lvimgrep`, `:lgrep`, `:lhelpgrep`, `:lmake`, etc., which create a
+location list instead of a quickfix list as the corresponding `:vimgrep`,
+`:grep`, `:helpgrep`, `:make` do.
+						*location-list-file-window*
+A location list is associated with a window and each window can have a
+separate location list.  A location list can be associated with only one
+window.  The location list is independent of the quickfix list.
+
+When a window with a location list is split, the new window gets a copy of the
+location list.  When there are no longer any references to a location list,
+the location list is destroyed.
+
+						*quickfix-changedtick*
+Every quickfix and location list has a read-only changedtick variable that
+tracks the total number of changes made to the list.  Every time the quickfix
+list is modified, this count is incremented. This can be used to perform an
+action only when the list has changed.  The |getqflist()| and |getloclist()|
+functions can be used to query the current value of changedtick.  You cannot
+change the changedtick variable.
+
+The following quickfix commands can be used.  The location list commands are
+similar to the quickfix commands, replacing the 'c' prefix in the quickfix
+command with 'l'.
+
+							*E924*
+If the current window was closed by an |autocommand| while processing a
+location list command, it will be aborted.
+
+							*E925* *E926*
+If the current quickfix or location list was changed by an |autocommand| while
+processing a quickfix or location list command, it will be aborted.
+
+							*:cc*
+:cc[!] [nr]		Display error [nr].  If [nr] is omitted, the same
+:[nr]cc[!]		error is displayed again.  Without [!] this doesn't
+			work when jumping to another buffer, the current buffer
+			has been changed, there is the only window for the
+			buffer and both 'hidden' and 'autowrite' are off.
+			When jumping to another buffer with [!] any changes to
+			the current buffer are lost, unless 'hidden' is set or
+			there is another window for this buffer.
+			The 'switchbuf' settings are respected when jumping
+			to a buffer.
+			When used in the quickfix window the line number can
+			be used, including "." for the current line and "$"
+			for the last line.
+
+							*:ll*
+:ll[!] [nr]		Same as ":cc", except the location list for the
+:[nr]ll[!]		current window is used instead of the quickfix list.
+
+						*:cn* *:cne* *:cnext* *E553*
+:[count]cn[ext][!]	Display the [count] next error in the list that
+			includes a file name.  If there are no file names at
+			all, go to the [count] next error.  See |:cc| for
+			[!] and 'switchbuf'.
+
+							*:lne* *:lnext*
+:[count]lne[xt][!]	Same as ":cnext", except the location list for the
+			current window is used instead of the quickfix list.
+
+:[count]cN[ext][!]		*:cp* *:cprevious*  *:cprev* *:cN* *:cNext*
+:[count]cp[revious][!]	Display the [count] previous error in the list that
+			includes a file name.  If there are no file names at
+			all, go to the [count] previous error.  See |:cc| for
+			[!] and 'switchbuf'.
+
+
+:[count]lN[ext][!]		*:lp* *:lprevious* *:lprev* *:lN* *:lNext*
+:[count]lp[revious][!]	Same as ":cNext" and ":cprevious", except the location
+			list for the current window is used instead of the
+			quickfix list.
+
+							*:cabo* *:cabove*
+:[count]cabo[ve]	Go to the [count] error above the current line in the
+			current buffer.  If [count] is omitted, then 1 is
+			used.  If there are no errors, then an error message
+			is displayed.  Assumes that the entries in a quickfix
+			list are sorted by their buffer number and line
+			number. If there are multiple errors on the same line,
+			then only the first entry is used.  If [count] exceeds
+			the number of entries above the current line, then the
+			first error in the file is selected.
+
+							*:lab* *:labove*
+:[count]lab[ove]	Same as ":cabove", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cbel* *:cbelow*
+:[count]cbel[ow]	Go to the [count] error below the current line in the
+			current buffer.  If [count] is omitted, then 1 is
+			used.  If there are no errors, then an error message
+			is displayed.  Assumes that the entries in a quickfix
+			list are sorted by their buffer number and line
+			number.  If there are multiple errors on the same
+			line, then only the first entry is used.  If [count]
+			exceeds the number of entries below the current line,
+			then the last error in the file is selected.
+
+							*:lbel* *:lbelow*
+:[count]lbel[ow]	Same as ":cbelow", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cbe* *:cbefore*
+:[count]cbe[fore]	Go to the [count] error before the current cursor
+			position in the current buffer.  If [count] is
+			omitted, then 1 is used.  If there are no errors, then
+			an error message is displayed.  Assumes that the
+			entries in a quickfix list are sorted by their buffer,
+			line and column numbers.  If [count] exceeds the
+			number of entries before the current position, then
+			the first error in the file is selected.
+
+							*:lbe* *:lbefore*
+:[count]lbe[fore]	Same as ":cbefore", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:caf* *:cafter*
+:[count]caf[ter]	Go to the [count] error after the current cursor
+			position in the current buffer.  If [count] is
+			omitted, then 1 is used.  If there are no errors, then
+			an error message is displayed.  Assumes that the
+			entries in a quickfix list are sorted by their buffer,
+			line and column numbers.  If [count] exceeds the
+			number of entries after the current position, then
+			the last error in the file is selected.
+
+							*:laf* *:lafter*
+:[count]laf[ter]	Same as ":cafter", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cnf* *:cnfile*
+:[count]cnf[ile][!]	Display the first error in the [count] next file in
+			the list that includes a file name.  If there are no
+			file names at all or if there is no next file, go to
+			the [count] next error.  See |:cc| for [!] and
+			'switchbuf'.
+
+							*:lnf* *:lnfile*
+:[count]lnf[ile][!]	Same as ":cnfile", except the location list for the
+			current window is used instead of the quickfix list.
+
+:[count]cNf[ile][!]			*:cpf* *:cpfile* *:cNf* *:cNfile*
+:[count]cpf[ile][!]	Display the last error in the [count] previous file in
+			the list that includes a file name.  If there are no
+			file names at all or if there is no next file, go to
+			the [count] previous error.  See |:cc| for [!] and
+			'switchbuf'.
+
+
+:[count]lNf[ile][!]			*:lpf* *:lpfile* *:lNf* *:lNfile*
+:[count]lpf[ile][!]	Same as ":cNfile" and ":cpfile", except the location
+			list for the current window is used instead of the
+			quickfix list.
+
+							*:crewind* *:cr*
+:cr[ewind][!] [nr]	Display error [nr].  If [nr] is omitted, the FIRST
+			error is displayed.  See |:cc|.
+
+							*:lrewind* *:lr*
+:lr[ewind][!] [nr]	Same as ":crewind", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cfirst* *:cfir*
+:cfir[st][!] [nr]	Same as ":crewind".
+
+							*:lfirst* *:lfir*
+:lfir[st][!] [nr]	Same as ":lrewind".
+
+							*:clast* *:cla*
+:cla[st][!] [nr]	Display error [nr].  If [nr] is omitted, the LAST
+			error is displayed.  See |:cc|.
+
+							*:llast* *:lla*
+:lla[st][!] [nr]	Same as ":clast", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cq* *:cquit*
+:cq[uit][!]
+:{N}cq[uit][!]
+:cq[uit][!] {N}		Quit Vim with error code {N}.  {N} defaults to one.
+			Useful when Vim is called from another program:
+			e.g., a compiler will not compile the same file again,
+			`git commit` will abort the committing process, `fc`
+			(built-in for shells like bash and zsh) will not
+			execute the command, etc.
+			{N} can also be zero, in which case Vim exits
+			normally.
+			WARNING: All changes in files are lost!  Also when the
+			[!] is not used.  It works like ":qall!" |:qall|,
+			except that Vim returns a non-zero exit code.
+
+							*:cf* *:cfi* *:cfile*
+:cf[ile][!] [errorfile]	Read the error file and jump to the first error.
+			This is done automatically when Vim is started with
+			the -q option.  You can use this command when you
+			keep Vim running while compiling.  If you give the
+			name of the errorfile, the 'errorfile' option will
+			be set to [errorfile].  See |:cc| for [!].
+			If the encoding of the error file differs from the
+			'encoding' option, you can use the 'makeencoding'
+			option to specify the encoding.
+
+							*:lf* *:lfi* *:lfile*
+:lf[ile][!] [errorfile]	Same as ":cfile", except the location list for the
+			current window is used instead of the quickfix list.
+			You can not use the -q command-line option to set
+			the location list.
+
+
+:cg[etfile] [errorfile]					*:cg* *:cgetfile*
+			Read the error file.  Just like ":cfile" but don't
+			jump to the first error.
+			If the encoding of the error file differs from the
+			'encoding' option, you can use the 'makeencoding'
+			option to specify the encoding.
+
+
+:lg[etfile] [errorfile]					*:lg* *:lge* *:lgetfile*
+			Same as ":cgetfile", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:caddf* *:caddfile*
+:caddf[ile] [errorfile]	Read the error file and add the errors from the
+			errorfile to the current quickfix list. If a quickfix
+			list is not present, then a new list is created.
+			If the encoding of the error file differs from the
+			'encoding' option, you can use the 'makeencoding'
+			option to specify the encoding.
+
+							*:laddf* *:laddfile*
+:laddf[ile] [errorfile]	Same as ":caddfile", except the location list for the
+			current window is used instead of the quickfix list.
+
+						*:cb* *:cbuffer* *E681*
+:cb[uffer][!] [bufnr]	Read the error list from the current buffer.
+			When [bufnr] is given it must be the number of a
+			loaded buffer.  That buffer will then be used instead
+			of the current buffer.
+			A range can be specified for the lines to be used.
+			Otherwise all lines in the buffer are used.
+			See |:cc| for [!].
+
+						*:lb* *:lbuffer*
+:lb[uffer][!] [bufnr]	Same as ":cbuffer", except the location list for the
+			current window is used instead of the quickfix list.
+
+						*:cgetb* *:cgetbuffer*
+:cgetb[uffer] [bufnr]	Read the error list from the current buffer.  Just
+			like ":cbuffer" but don't jump to the first error.
+
+						*:lgetb* *:lgetbuffer*
+:lgetb[uffer] [bufnr]	Same as ":cgetbuffer", except the location list for
+			the current window is used instead of the quickfix
+			list.
+
+						*:cad* *:cadd* *:caddbuffer*
+:cad[dbuffer] [bufnr]	Read the error list from the current buffer and add
+			the errors to the current quickfix list.  If a
+			quickfix list is not present, then a new list is
+			created. Otherwise, same as ":cbuffer".
+
+							*:laddb* *:laddbuffer*
+:laddb[uffer] [bufnr]	Same as ":caddbuffer", except the location list for
+			the current window is used instead of the quickfix
+			list.
+
+							*:cex* *:cexpr* *E777*
+:cex[pr][!] {expr}	Create a quickfix list using the result of {expr} and
+			jump to the first error.
+			If {expr} is a String, then each newline terminated
+			line in the String is processed using the global value
+			of 'errorformat' and the result is added to the
+			quickfix list.
+			If {expr} is a List, then each String item in the list
+			is processed and added to the quickfix list.  Non
+			String items in the List are ignored.
+			See |:cc| for [!].
+			Examples: >
+				:cexpr system('grep -n xyz *')
+				:cexpr getline(1, '$')
+<
+							*:lex* *:lexpr*
+:lex[pr][!] {expr}	Same as |:cexpr|, except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cgete* *:cgetexpr*
+:cgete[xpr] {expr}	Create a quickfix list using the result of {expr}.
+			Just like |:cexpr|, but don't jump to the first error.
+
+							*:lgete* *:lgetexpr*
+:lgete[xpr] {expr}	Same as |:cgetexpr|, except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cadde* *:caddexpr*
+:cadde[xpr] {expr}	Evaluate {expr} and add the resulting lines to the
+			current quickfix list. If a quickfix list is not
+			present, then a new list is created. The current
+			cursor position will not be changed. See |:cexpr| for
+			more information.
+			Example: >
+    :g/mypattern/caddexpr expand("%") .. ":" .. line(".") ..  ":" .. getline(".")
+<
+						*:lad* *:addd* *:laddexpr*
+:lad[dexpr] {expr}	Same as ":caddexpr", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:cl* *:clist*
+:cl[ist] [from] [, [to]]
+			List all errors that are valid |quickfix-valid|.
+			If numbers [from] and/or [to] are given, the respective
+			range of errors is listed.  A negative number counts
+			from the last error backwards, -1 being the last error.
+			The |:filter| command can be used to display only the
+			quickfix entries matching a supplied pattern. The
+			pattern is matched against the filename, module name,
+			pattern and text of the entry.
+
+:cl[ist] +{count}	List the current and next {count} valid errors.  This
+			is similar to ":clist from from+count", where "from"
+			is the current error position.
+
+:cl[ist]! [from] [, [to]]
+			List all errors.
+
+:cl[ist]! +{count}	List the current and next {count} error lines.  This
+                        is useful to see unrecognized lines after the current
+			one.  For example, if ":clist" shows:
+        8384 testje.java:252: error: cannot find symbol ~
+                        Then using ":cl! +3" shows the reason:
+        8384 testje.java:252: error: cannot find symbol ~
+        8385:   ZexitCode = Fmainx(); ~
+        8386:               ^ ~
+        8387:   symbol:   method Fmainx() ~
+
+:lli[st] [from] [, [to]]				*:lli* *:llist*
+			Same as ":clist", except the location list for the
+			current window is used instead of the quickfix list.
+
+:lli[st]! [from] [, [to]]
+			List all the entries in the location list for the
+			current window.
+
+If you insert or delete lines, mostly the correct error location is still
+found because hidden marks are used.  Sometimes, when the mark has been
+deleted for some reason, the message "line changed" is shown to warn you that
+the error location may not be correct.  If you quit Vim and start again the
+marks are lost and the error locations may not be correct anymore.
+
+Two autocommands are available for running commands before and after a
+quickfix command (':make', ':grep' and so on) is executed. See
+|QuickFixCmdPre| and |QuickFixCmdPost| for details.
+
+						*QuickFixCmdPost-example*
+When 'encoding' differs from the locale, the error messages may have a
+different encoding from what Vim is using.  To convert the messages you can
+use this code: >
+	function QfMakeConv()
+	   let qflist = getqflist()
+	   for i in qflist
+	      let i.text = iconv(i.text, "cp936", "utf-8")
+	   endfor
+	   call setqflist(qflist)
+	endfunction
+
+	au QuickfixCmdPost make call QfMakeConv()
+Another option is using 'makeencoding'.
+
+							*quickfix-title*
+Every quickfix and location list has a title. By default the title is set to
+the command that created the list. The |getqflist()| and |getloclist()|
+functions can be used to get the title of a quickfix and a location list
+respectively. The |setqflist()| and |setloclist()| functions can be used to
+modify the title of a quickfix and location list respectively. Examples: >
+	call setqflist([], 'a', {'title' : 'Cmd output'})
+	echo getqflist({'title' : 1})
+	call setloclist(3, [], 'a', {'title' : 'Cmd output'})
+	echo getloclist(3, {'title' : 1})
+<
+							*quickfix-index*
+When you jump to a quickfix/location list entry using any of the quickfix
+commands (e.g. |:cc|, |:cnext|, |:cprev|, etc.), that entry becomes the
+currently selected entry. The index of the currently selected entry in a
+quickfix/location list can be obtained using the getqflist()/getloclist()
+functions. Examples: >
+	echo getqflist({'idx' : 0}).idx
+	echo getqflist({'id' : qfid, 'idx' : 0}).idx
+	echo getloclist(2, {'idx' : 0}).idx
+<
+For a new quickfix list, the first entry is selected and the index is 1.  Any
+entry in any quickfix/location list can be set as the currently selected entry
+using the setqflist() function. Examples: >
+	call setqflist([], 'a', {'idx' : 12})
+	call setqflist([], 'a', {'id' : qfid, 'idx' : 7})
+	call setloclist(1, [], 'a', {'idx' : 7})
+<
+							*quickfix-size*
+You can get the number of entries (size) in a quickfix and a location list
+using the |getqflist()| and |getloclist()| functions respectively. Examples: >
+	echo getqflist({'size' : 1})
+	echo getloclist(5, {'size' : 1})
+<
+							*quickfix-context*
+Any Vim type can be associated as a context with a quickfix or location list.
+The |setqflist()| and the |setloclist()| functions can be used to associate a
+context with a quickfix and a location list respectively. The |getqflist()|
+and the |getloclist()| functions can be used to retrieve the context of a
+quickfix and a location list respectively. This is useful for a Vim plugin
+dealing with multiple quickfix/location lists.
+Examples: >
+
+	let somectx = {'name' : 'Vim', 'type' : 'Editor'}
+	call setqflist([], 'a', {'context' : somectx})
+	echo getqflist({'context' : 1})
+
+	let newctx = ['red', 'green', 'blue']
+	call setloclist(2, [], 'a', {'id' : qfid, 'context' : newctx})
+	echo getloclist(2, {'id' : qfid, 'context' : 1})
+<
+							*quickfix-parse*
+You can parse a list of lines using 'errorformat' without creating or
+modifying a quickfix list using the |getqflist()| function. Examples: >
+	echo getqflist({'lines' : ["F1:10:Line10", "F2:20:Line20"]})
+	echo getqflist({'lines' : systemlist('grep -Hn quickfix *')})
+This returns a dictionary where the "items" key contains the list of quickfix
+entries parsed from lines. The following shows how to use a custom
+'errorformat' to parse the lines without modifying the 'errorformat' option: >
+	echo getqflist({'efm' : '%f#%l#%m', 'lines' : ['F1#10#Line']})
+<
+
+EXECUTE A COMMAND IN ALL THE BUFFERS IN QUICKFIX OR LOCATION LIST:
+							*:cdo*
+:cdo[!] {cmd}		Execute {cmd} in each valid entry in the quickfix list.
+			It works like doing this: >
+				:cfirst
+				:{cmd}
+				:cnext
+				:{cmd}
+				etc.
+<			When the current file can't be |abandon|ed and the [!]
+			is not present, the command fails.
+			When going to the next entry fails execution stops.
+			The last buffer (or where an error occurred) becomes
+			the current buffer.
+			{cmd} can contain '|' to concatenate several commands.
+
+			Only valid entries in the quickfix list are used.
+			A range can be used to select entries, e.g.: >
+				:10,$cdo cmd
+<			To skip entries 1 to 9.
+
+			Note: While this command is executing, the Syntax
+			autocommand event is disabled by adding it to
+			'eventignore'.  This considerably speeds up editing
+			each buffer.
+			Also see |:bufdo|, |:tabdo|, |:argdo|, |:windo|,
+			|:ldo|, |:cfdo| and |:lfdo|.
+
+							*:cfdo*
+:cfdo[!] {cmd}		Execute {cmd} in each file in the quickfix list.
+			It works like doing this: >
+				:cfirst
+				:{cmd}
+				:cnfile
+				:{cmd}
+				etc.
+<			Otherwise it works the same as `:cdo`.
+
+							*:ldo*
+:ld[o][!] {cmd}		Execute {cmd} in each valid entry in the location list
+			for the current window.
+			It works like doing this: >
+				:lfirst
+				:{cmd}
+				:lnext
+				:{cmd}
+				etc.
+<			Only valid entries in the location list are used.
+			Otherwise it works the same as `:cdo`.
+
+							*:lfdo*
+:lfdo[!] {cmd}		Execute {cmd} in each file in the location list for
+			the current window.
+			It works like doing this: >
+				:lfirst
+				:{cmd}
+				:lnfile
+				:{cmd}
+				etc.
+<			Otherwise it works the same as `:ldo`.
+
+FILTERING A QUICKFIX OR LOCATION LIST:
+				    *cfilter-plugin* *:Cfilter* *:Lfilter*
+If you have too many entries in a quickfix list, you can use the cfilter
+plugin to reduce the number of entries.  Load the plugin with: >
+
+    packadd cfilter
+
+Then you can use the following commands to filter a quickfix/location list: >
+
+    :Cfilter[!] /{pat}/
+    :Lfilter[!] /{pat}/
+
+The |:Cfilter| command creates a new quickfix list from the entries matching
+{pat} in the current quickfix list. {pat} is a Vim |regular-expression|
+pattern. Both the file name and the text of the entries are matched against
+{pat}. If the optional ! is supplied, then the entries not matching {pat} are
+used. The pattern can be optionally enclosed using one of the following
+characters: ', ", /. If the pattern is empty, then the last used search
+pattern is used.
+
+The |:Lfilter| command does the same as |:Cfilter| but operates on the current
+location list.
+
+The current quickfix/location list is not modified by these commands, so you
+can go back to the unfiltered list using the |:colder|/|:lolder| command.
+
+=============================================================================
+2. The error window					*quickfix-window*
+
+					    *:cope* *:copen* *w:quickfix_title*
+:cope[n] [height]	Open a window to show the current list of errors.
+
+			When [height] is given, the window becomes that high
+			(if there is room).  When [height] is omitted the
+			window is made ten lines high.
+
+			If there already is a quickfix window, it will be made
+			the current window.  It is not possible to open a
+			second quickfix window.  If [height] is given the
+			existing window will be resized to it.
+
+							*quickfix-buffer*
+			The window will contain a special buffer, with
+			'buftype' equal to "quickfix".  Don't change this!
+			The window will have the w:quickfix_title variable set
+			which will indicate the command that produced the
+			quickfix list. This can be used to compose a custom
+			status line if the value of 'statusline' is adjusted
+			properly. Whenever this buffer is modified by a
+			quickfix command or function, the |b:changedtick|
+			variable is incremented.  You can get the number of
+			this buffer using the getqflist() and getloclist()
+			functions by passing the "qfbufnr" item. For a
+			location list, this buffer is wiped out when the
+			location list is removed.
+
+							*:lop* *:lopen*
+:lop[en] [height]	Open a window to show the location list for the
+			current window. Works only when the location list for
+			the current window is present.  You can have more than
+			one location window opened at a time.  Otherwise, it
+			acts the same as ":copen".
+
+							*:ccl* *:cclose*
+:ccl[ose]		Close the quickfix window.
+
+							*:lcl* *:lclose*
+:lcl[ose]		Close the window showing the location list for the
+			current window.
+
+							*:cw* *:cwindow*
+:cw[indow] [height]	Open the quickfix window when there are recognized
+			errors.  If the window is already open and there are
+			no recognized errors, close the window.
+
+							*:lw* *:lwindow*
+:lw[indow] [height]	Same as ":cwindow", except use the window showing the
+			location list for the current window.
+
+							*:cbo* *:cbottom*
+:cbo[ttom]		Put the cursor in the last line of the quickfix window
+			and scroll to make it visible.  This is useful for
+			when errors are added by an asynchronous callback.
+			Only call it once in a while if there are many
+			updates to avoid a lot of redrawing.
+
+							*:lbo* *:lbottom*
+:lbo[ttom]		Same as ":cbottom", except use the window showing the
+			location list for the current window.
+
+Normally the quickfix window is at the bottom of the screen.  If there are
+vertical splits, it's at the bottom of the rightmost column of windows.  To
+make it always occupy the full width: >
+	:botright cwindow
+You can move the window around with |window-moving| commands.
+For example, to move it to the top: CTRL-W K
+The 'winfixheight' option will be set, which means that the window will mostly
+keep its height, ignoring 'winheight' and 'equalalways'.  You can change the
+height manually (e.g., by dragging the status line above it with the mouse).
+
+In the quickfix window, each line is one error.  The line number is equal to
+the error number.  The current entry is highlighted with the QuickFixLine
+highlighting.  You can change it to your liking, e.g.: >
+	:hi QuickFixLine ctermbg=Yellow guibg=Yellow
+
+You can use ":.cc" to jump to the error under the cursor.
+Hitting the <Enter> key or double-clicking the mouse on a line has the same
+effect.  The file containing the error is opened in the window above the
+quickfix window.  If there already is a window for that file, it is used
+instead.  If the buffer in the used window has changed, and the error is in
+another file, jumping to the error will fail.  You will first have to make
+sure the window contains a buffer which can be abandoned.
+
+When you select a file from the quickfix window, the following steps are used
+to find a window to edit the file:
+
+1. If a window displaying the selected file is present in the current tabpage
+   (starting with the window before the quickfix window), then that window is
+   used.
+2. If the above step fails and if 'switchbuf' contains "usetab" and a window
+   displaying the selected file is present in any one of the tabpages
+   (starting with the first tabpage) then that window is used.
+3. If the above step fails then a window in the current tabpage displaying a
+   buffer with 'buftype' not set (starting with the window before the quickfix
+   window) is used.
+4. If the above step fails and if 'switchbuf' contains "uselast", then the
+   previously accessed window is used.
+5. If the above step fails then the window before the quickfix window is used.
+   If there is no previous window, then the window after the quickfix window
+   is used.
+6. If the above step fails, then a new horizontally split window above the
+   quickfix window is used.
+
+					*CTRL-W_<Enter>* *CTRL-W_<CR>*
+You can use CTRL-W <Enter> to open a new window and jump to the error there.
+
+When the quickfix window has been filled, two autocommand events are
+triggered.  First the 'filetype' option is set to "qf", which triggers the
+FileType event (also see |qf.vim|).  Then the BufReadPost event is triggered,
+using "quickfix" for the buffer name.  This can be used to perform some action
+on the listed errors.  Example: >
+	au BufReadPost quickfix  setlocal modifiable
+		\ | silent exe 'g/^/s//\=line(".") .. " "/'
+		\ | setlocal nomodifiable
+This prepends the line number to each line.  Note the use of "\=" in the
+substitute string of the ":s" command, which is used to evaluate an
+expression.
+The BufWinEnter event is also triggered, again using "quickfix" for the buffer
+name.
+
+Note: When adding to an existing quickfix list the autocommand are not
+triggered.
+
+Note: Making changes in the quickfix window has no effect on the list of
+errors.  'modifiable' is off to avoid making changes.  If you delete or insert
+lines anyway, the relation between the text and the error number is messed up.
+If you really want to do this, you could write the contents of the quickfix
+window to a file and use ":cfile" to have it parsed and used as the new error
+list.
+
+						*location-list-window*
+The location list window displays the entries in a location list.  When you
+open a location list window, it is created below the current window and
+displays the location list for the current window.  The location list window
+is similar to the quickfix window, except that you can have more than one
+location list window open at a time. When you use a location list command in
+this window, the displayed location list is used.
+
+When you select a file from the location list window, the following steps are
+used to find a window to edit the file:
+
+1. If a non-quickfix window associated with the location list is present in
+   the current tabpage, then that window is used.
+2. If the above step fails and if the file is already opened in another window
+   in the current tabpage, then that window is used.
+3. If the above step fails and 'switchbuf' contains "usetab" and if the file
+   is opened in a window in any one of the tabpages, then that window is used.
+4. If the above step fails then a window in the current tabpage showing a
+   buffer with 'buftype' not set is used.
+5. If the above step fails, then the file is edited in a new window.
+
+In all of the above cases, if the location list for the selected window is not
+yet set, then it is set to the location list displayed in the location list
+window.
+
+							*quickfix-window-ID*
+You can use the |getqflist()| and |getloclist()| functions to obtain the
+window ID of the quickfix window and location list window respectively (if
+present).  Examples: >
+	echo getqflist({'winid' : 1}).winid
+	echo getloclist(2, {'winid' : 1}).winid
+<
+							*getqflist-examples*
+The |getqflist()| and |getloclist()| functions can be used to get the various
+attributes of a quickfix and location list respectively. Some examples for
+using these functions are below:
+>
+    " get the title of the current quickfix list
+    :echo getqflist({'title' : 0}).title
+
+    " get the identifier of the current quickfix list
+    :let qfid = getqflist({'id' : 0}).id
+
+    " get the identifier of the fourth quickfix list in the stack
+    :let qfid = getqflist({'nr' : 4, 'id' : 0}).id
+
+    " check whether a quickfix list with a specific identifier exists
+    :if getqflist({'id' : qfid}).id == qfid
+
+    " get the index of the current quickfix list in the stack
+    :let qfnum = getqflist({'nr' : 0}).nr
+
+    " get the items of a quickfix list specified by an identifier
+    :echo getqflist({'id' : qfid, 'items' : 0}).items
+
+    " get the number of entries in a quickfix list specified by an id
+    :echo getqflist({'id' : qfid, 'size' : 0}).size
+
+    " get the context of the third quickfix list in the stack
+    :echo getqflist({'nr' : 3, 'context' : 0}).context
+
+    " get the number of quickfix lists in the stack
+    :echo getqflist({'nr' : '$'}).nr
+
+    " get the number of times the current quickfix list is changed
+    :echo getqflist({'changedtick' : 0}).changedtick
+
+    " get the current entry in a quickfix list specified by an identifier
+    :echo getqflist({'id' : qfid, 'idx' : 0}).idx
+
+    " get all the quickfix list attributes using an identifier
+    :echo getqflist({'id' : qfid, 'all' : 0})
+
+    " parse text from a List of lines and return a quickfix list
+    :let myList = ["a.java:10:L10", "b.java:20:L20"]
+    :echo getqflist({'lines' : myList}).items
+
+    " parse text using a custom 'efm' and return a quickfix list
+    :echo getqflist({'lines' : ['a.c#10#Line 10'], 'efm':'%f#%l#%m'}).items
+
+    " get the quickfix list window id
+    :echo getqflist({'winid' : 0}).winid
+
+    " get the quickfix list window buffer number
+    :echo getqflist({'qfbufnr' : 0}).qfbufnr
+
+    " get the context of the current location list
+    :echo getloclist(0, {'context' : 0}).context
+
+    " get the location list window id of the third window
+    :echo getloclist(3, {'winid' : 0}).winid
+
+    " get the location list window buffer number of the third window
+    :echo getloclist(3, {'qfbufnr' : 0}).qfbufnr
+
+    " get the file window id of a location list window (winnr: 4)
+    :echo getloclist(4, {'filewinid' : 0}).filewinid
+<
+							*setqflist-examples*
+The |setqflist()| and |setloclist()| functions can be used to set the various
+attributes of a quickfix and location list respectively. Some examples for
+using these functions are below:
+>
+    " create an empty quickfix list with a title and a context
+    :let t = 'Search results'
+    :let c = {'cmd' : 'grep'}
+    :call setqflist([], ' ', {'title' : t, 'context' : c})
+
+    " set the title of the current quickfix list
+    :call setqflist([], 'a', {'title' : 'Mytitle'})
+
+    " change the current entry in the list specified by an identifier
+    :call setqflist([], 'a', {'id' : qfid, 'idx' : 10})
+
+    " set the context of a quickfix list specified by an identifier
+    :call setqflist([], 'a', {'id' : qfid, 'context' : {'val' : 100}})
+
+    " create a new quickfix list from a command output
+    :call setqflist([], ' ', {'lines' : systemlist('grep -Hn main *.c')})
+
+    " parse text using a custom efm and add to a particular quickfix list
+    :call setqflist([], 'a', {'id' : qfid,
+		\ 'lines' : ["a.c#10#L10", "b.c#20#L20"], 'efm':'%f#%l#%m'})
+
+    " add items to the quickfix list specified by an identifier
+    :let newItems = [{'filename' : 'a.txt', 'lnum' : 10, 'text' : "Apple"},
+		    \ {'filename' : 'b.txt', 'lnum' : 20, 'text' : "Orange"}]
+    :call setqflist([], 'a', {'id' : qfid, 'items' : newItems})
+
+    " empty a quickfix list specified by an identifier
+    :call setqflist([], 'r', {'id' : qfid, 'items' : []})
+
+    " free all the quickfix lists in the stack
+    :call setqflist([], 'f')
+
+    " set the title of the fourth quickfix list
+    :call setqflist([], 'a', {'nr' : 4, 'title' : 'SomeTitle'})
+
+    " create a new quickfix list at the end of the stack
+    :call setqflist([], ' ', {'nr' : '$',
+			\ 'lines' : systemlist('grep -Hn class *.java')})
+
+    " create a new location list from a command output
+    :call setloclist(0, [], ' ', {'lines' : systemlist('grep -Hn main *.c')})
+
+    " replace the location list entries for the third window
+    :call setloclist(3, [], 'r', {'items' : newItems})
+<
+=============================================================================
+3. Using more than one list of errors			*quickfix-error-lists*
+
+So far has been assumed that there is only one list of errors.  Actually the
+ten last used lists are remembered.  When starting a new list, the previous
+ones are automatically kept.  Two commands can be used to access older error
+lists.  They set one of the existing error lists as the current one.
+
+						*:colder* *:col* *E380*
+:col[der] [count]	Go to older error list.  When [count] is given, do
+			this [count] times.  When already at the oldest error
+			list, an error message is given.
+
+						*:lolder* *:lol*
+:lol[der] [count]	Same as `:colder`, except use the location list for
+			the current window instead of the quickfix list.
+
+						*:cnewer* *:cnew* *E381*
+:cnew[er] [count]	Go to newer error list.  When [count] is given, do
+			this [count] times.  When already at the newest error
+			list, an error message is given.
+
+						*:lnewer* *:lnew*
+:lnew[er] [count]	Same as `:cnewer`, except use the location list for
+			the current window instead of the quickfix list.
+
+						*:chistory* *:chi*
+:[count]chi[story]	Show the list of error lists.  The current list is
+			marked with ">".  The output looks like:
+			  error list 1 of 3; 43 errors   :make  ~
+			> error list 2 of 3; 0 errors    :helpgrep tag  ~
+			  error list 3 of 3; 15 errors   :grep ex_help *.c ~
+
+			When [count] is given, then the count'th quickfix
+			list is made the current list. Example: >
+				" Make the 4th quickfix list current
+				:4chistory
+<
+						*:lhistory* *:lhi*
+:[count]lhi[story]	Show the list of location lists, otherwise like
+			`:chistory`.
+
+When adding a new error list, it becomes the current list.
+
+When ":colder" has been used and ":make" or ":grep" is used to add a new error
+list, one newer list is overwritten.  This is especially useful if you are
+browsing with ":grep" |grep|.  If you want to keep the more recent error
+lists, use ":cnewer 99" first.
+
+To get the number of lists in the quickfix and location list stack, you can
+use the |getqflist()| and |getloclist()| functions respectively with the list
+number set to the special value '$'. Examples: >
+	echo getqflist({'nr' : '$'}).nr
+	echo getloclist(3, {'nr' : '$'}).nr
+To get the number of the current list in the stack: >
+	echo getqflist({'nr' : 0}).nr
+<
+=============================================================================
+4. Using :make						*:make_makeprg*
+
+							*:mak* *:make*
+:mak[e][!] [arguments]	1. All relevant |QuickFixCmdPre| autocommands are
+			   executed.
+			2. If the 'autowrite' option is on, write any changed
+			   buffers
+			3. An errorfile name is made from 'makeef'.  If
+			   'makeef' doesn't contain "##", and a file with this
+			   name already exists, it is deleted.
+			4. The program given with the 'makeprg' option is
+			   started (default "make") with the optional
+			   [arguments] and the output is saved in the
+			   errorfile (for Unix it is also echoed on the
+			   screen).
+			5. The errorfile is read using 'errorformat'.
+			6. All relevant |QuickFixCmdPost| autocommands are
+			   executed.  See example below.
+			7. If [!] is not given the first error is jumped to.
+			8. The errorfile is deleted.
+			9. You can now move through the errors with commands
+			   like |:cnext| and |:cprevious|, see above.
+			This command does not accept a comment, any "
+			characters are considered part of the arguments.
+			If the encoding of the program output differs from the
+			'encoding' option, you can use the 'makeencoding'
+			option to specify the encoding.
+
+							*:lmak* *:lmake*
+:lmak[e][!] [arguments]
+			Same as ":make", except the location list for the
+			current window is used instead of the quickfix list.
+
+The ":make" command executes the command given with the 'makeprg' option.
+This is done by passing the command to the shell given with the 'shell'
+option.  This works almost like typing
+
+	":!{makeprg} [arguments] {shellpipe} {errorfile}".
+
+{makeprg} is the string given with the 'makeprg' option.  Any command can be
+used, not just "make".  Characters '%' and '#' are expanded as usual on a
+command-line.  You can use "%<" to insert the current file name without
+extension, or "#<" to insert the alternate file name without extension, for
+example: >
+   :set makeprg=make\ #<.o
+
+[arguments] is anything that is typed after ":make".
+{shellpipe} is the 'shellpipe' option.
+{errorfile} is the 'makeef' option, with ## replaced to make it unique.
+
+The placeholder "$*" can be used for the argument list in {makeprg} if the
+command needs some additional characters after its arguments.  The $* is
+replaced then by all arguments.  Example: >
+   :set makeprg=latex\ \\\\nonstopmode\ \\\\input\\{$*}
+or simpler >
+   :let &mp = 'latex \\nonstopmode \\input\{$*}'
+"$*" can be given multiple times, for example: >
+   :set makeprg=gcc\ -o\ $*\ $*
+
+The 'shellpipe' option defaults to ">" for the Amiga and ">%s 2>&1" for Win32.
+This means that the output of the compiler is saved in a file and not shown on
+the screen directly.  For Unix "| tee" is used.  The compiler output is shown
+on the screen and saved in a file the same time.  Depending on the shell used
+"|& tee" or "2>&1| tee" is the default, so stderr output will be included.
+
+If 'shellpipe' is empty, the {errorfile} part will be omitted.  This is useful
+for compilers that write to an errorfile themselves (e.g., Manx's Amiga C).
+
+
+Using QuickFixCmdPost to fix the encoding ~
+
+It may be that 'encoding' is set to an encoding that differs from the messages
+your build program produces.  This example shows how to fix this after Vim has
+read the error messages: >
+
+	function QfMakeConv()
+	   let qflist = getqflist()
+	   for i in qflist
+	      let i.text = iconv(i.text, "cp936", "utf-8")
+	   endfor
+	   call setqflist(qflist)
+	endfunction
+
+	au QuickfixCmdPost make call QfMakeConv()
+
+(Example by Faque Cheng)
+Another option is using 'makeencoding'.
+
+==============================================================================
+5. Using :vimgrep and :grep				*grep* *lid*
+
+Vim has two ways to find matches for a pattern: Internal and external.  The
+advantage of the internal grep is that it works on all systems and uses the
+powerful Vim search patterns.  An external grep program can be used when the
+Vim grep does not do what you want.
+
+The internal method will be slower, because files are read into memory.  The
+advantages are:
+- Line separators and encoding are automatically recognized, as if a file is
+  being edited.
+- Uses Vim search patterns.  Multi-line patterns can be used.
+- When plugins are enabled: compressed and remote files can be searched.
+	|gzip| |netrw|
+
+To be able to do this Vim loads each file as if it is being edited.  When
+there is no match in the file the associated buffer is wiped out again.  The
+'hidden' option is ignored here to avoid running out of memory or file
+descriptors when searching many files.  However, when the |:hide| command
+modifier is used the buffers are kept loaded.  This makes following searches
+in the same files a lot faster.
+
+Note that |:copen| (or |:lopen| for |:lgrep|) may be used to open a buffer
+containing the search results in linked form.  The |:silent| command may be
+used to suppress the default full screen grep output.  The ":grep!" form of
+the |:grep| command doesn't jump to the first match automatically.  These
+commands can be combined to create a NewGrep command: >
+
+        command! -nargs=+ NewGrep execute 'silent grep! <args>' | copen 42
+
+
+5.1 using Vim's internal grep
+
+					*:vim* *:vimgrep* *E682* *E683*
+:vim[grep][!] /{pattern}/[g][j][f] {file} ...
+			Search for {pattern} in the files {file} ... and set
+			the error list to the matches.  Files matching
+			'wildignore' are ignored; files in 'suffixes' are
+			searched last.
+
+			{pattern} is a Vim search pattern.  Instead of
+			enclosing it in / any non-ID character (see
+			|'isident'|) can be used, so long as it does not
+			appear in {pattern}.
+			'ignorecase' applies.  To overrule it put |/\c| in the
+			pattern to ignore case or |/\C| to match case.
+			'smartcase' is not used.
+			If {pattern} is empty (e.g. // is specified), the last
+			used search pattern is used. |last-pattern|
+
+			Flags:
+			'g'  Without the 'g' flag each line is added only
+			     once.  With 'g' every match is added.
+
+			'j'  Without the 'j' flag Vim jumps to the first
+			     match.  With 'j' only the quickfix list is
+			     updated.  With the [!] any changes in the current
+			     buffer are abandoned.
+
+			'f'  When the 'f' flag is specified, fuzzy string
+			     matching is used to find matching lines. In this
+			     case, {pattern} is treated as a literal string
+			     instead of a regular expression.  See
+			     |fuzzy-matching| for more information about fuzzy
+			     matching strings.
+
+			|QuickFixCmdPre| and |QuickFixCmdPost| are triggered.
+			A file that is opened for matching may use a buffer
+			number, but it is reused if possible to avoid
+			consuming buffer numbers.
+
+:{count}vim[grep] ...
+			When a number is put before the command this is used
+			as the maximum number of matches to find.  Use
+			":1vimgrep pattern file" to find only the first.
+			Useful if you only want to check if there is a match
+			and quit quickly when it's found.
+
+			Every second or so the searched file name is displayed
+			to give you an idea of the progress made.
+			Examples: >
+				:vimgrep /an error/ *.c
+				:vimgrep /\<FileName\>/ *.h include/*
+				:vimgrep /myfunc/ **/*.c
+<			For the use of "**" see |starstar-wildcard|.
+
+:vim[grep][!] {pattern} {file} ...
+			Like above, but instead of enclosing the pattern in a
+			non-ID character use a white-separated pattern.  The
+			pattern must start with an ID character.
+			Example: >
+				:vimgrep Error *.c
+<
+							*:lv* *:lvimgrep*
+:lv[imgrep][!] /{pattern}/[g][j][f] {file} ...
+:lv[imgrep][!] {pattern} {file} ...
+			Same as ":vimgrep", except the location list for the
+			current window is used instead of the quickfix list.
+
+						*:vimgrepa* *:vimgrepadd*
+:vimgrepa[dd][!] /{pattern}/[g][j][f] {file} ...
+:vimgrepa[dd][!] {pattern} {file} ...
+			Just like ":vimgrep", but instead of making a new list
+			of errors the matches are appended to the current
+			list.
+
+						*:lvimgrepa* *:lvimgrepadd*
+:lvimgrepa[dd][!] /{pattern}/[g][j][f] {file} ...
+:lvimgrepa[dd][!] {pattern} {file} ...
+			Same as ":vimgrepadd", except the location list for
+			the current window is used instead of the quickfix
+			list.
+
+5.2 External grep
+
+Vim can interface with "grep" and grep-like programs (such as the GNU
+id-utils) in a similar way to its compiler integration (see |:make| above).
+
+[Unix trivia: The name for the Unix "grep" command comes from ":g/re/p", where
+"re" stands for Regular Expression.]
+
+							    *:gr* *:grep*
+:gr[ep][!] [arguments]	Just like ":make", but use 'grepprg' instead of
+			'makeprg' and 'grepformat' instead of 'errorformat'.
+			When 'grepprg' is "internal" this works like
+			|:vimgrep|.  Note that the pattern needs to be
+			enclosed in separator characters then.
+			If the encoding of the program output differs from the
+			'encoding' option, you can use the 'makeencoding'
+			option to specify the encoding.
+
+							    *:lgr* *:lgrep*
+:lgr[ep][!] [arguments]	Same as ":grep", except the location list for the
+			current window is used instead of the quickfix list.
+
+							*:grepa* *:grepadd*
+:grepa[dd][!] [arguments]
+			Just like ":grep", but instead of making a new list of
+			errors the matches are appended to the current list.
+			Example: >
+				:call setqflist([])
+				:bufdo grepadd! something %
+<			The first command makes a new error list which is
+			empty.  The second command executes "grepadd" for each
+			listed buffer.  Note the use of ! to avoid that
+			":grepadd" jumps to the first error, which is not
+			allowed with |:bufdo|.
+			An example that uses the argument list and avoids
+			errors for files without matches: >
+				:silent argdo try
+				  \ | grepadd! something %
+				  \ | catch /E480:/
+				  \ | endtry"
+<
+			If the encoding of the program output differs from the
+			'encoding' option, you can use the 'makeencoding'
+			option to specify the encoding.
+
+							*:lgrepa* *:lgrepadd*
+:lgrepa[dd][!] [arguments]
+			Same as ":grepadd", except the location list for the
+			current window is used instead of the quickfix list.
+
+5.3 Setting up external grep
+
+If you have a standard "grep" program installed, the :grep command may work
+well with the defaults.  The syntax is very similar to the standard command: >
+
+	:grep foo *.c
+
+Will search all files with the .c extension for the substring "foo".  The
+arguments to :grep are passed straight to the "grep" program, so you can use
+whatever options your "grep" supports.
+
+By default, :grep invokes grep with the -n option (show file and line
+numbers).  You can change this with the 'grepprg' option.  You will need to set
+'grepprg' if:
+
+a)	You are using a program that isn't called "grep"
+b)	You have to call grep with a full path
+c)	You want to pass other options automatically (e.g. case insensitive
+	search.)
+
+Once "grep" has executed, Vim parses the results using the 'grepformat'
+option.  This option works in the same way as the 'errorformat' option - see
+that for details.  You may need to change 'grepformat' from the default if
+your grep outputs in a non-standard format, or you are using some other
+program with a special format.
+
+Once the results are parsed, Vim loads the first file containing a match and
+jumps to the appropriate line, in the same way that it jumps to a compiler
+error in |quickfix| mode.  You can then use the |:cnext|, |:clist|, etc.
+commands to see the other matches.
+
+
+5.4 Using :grep with id-utils
+
+You can set up :grep to work with the GNU id-utils like this: >
+
+	:set grepprg=lid\ -Rgrep\ -s
+	:set grepformat=%f:%l:%m
+
+then >
+	:grep (regexp)
+
+works just as you'd expect.
+(provided you remembered to mkid first :)
+
+
+5.5 Browsing source code with :vimgrep or :grep
+
+Using the stack of error lists that Vim keeps, you can browse your files to
+look for functions and the functions they call.  For example, suppose that you
+have to add an argument to the read_file() function.  You enter this command: >
+
+	:vimgrep /\<read_file\>/ *.c
+
+You use ":cn" to go along the list of matches and add the argument.  At one
+place you have to get the new argument from a higher level function msg(), and
+need to change that one too.  Thus you use: >
+
+	:vimgrep /\<msg\>/ *.c
+
+While changing the msg() functions, you find another function that needs to
+get the argument from a higher level.  You can again use ":vimgrep" to find
+these functions.  Once you are finished with one function, you can use >
+
+	:colder
+
+to go back to the previous one.
+
+This works like browsing a tree: ":vimgrep" goes one level deeper, creating a
+list of branches.  ":colder" goes back to the previous level.  You can mix
+this use of ":vimgrep" and "colder" to browse all the locations in a tree-like
+way.  If you do this consistently, you will find all locations without the
+need to write down a "todo" list.
+
+=============================================================================
+6. Selecting a compiler					*compiler-select*
+
+						*:comp* *:compiler* *E666*
+:comp[iler][!] {name}		Set options to work with compiler {name}.
+				Without the "!" options are set for the
+				current buffer.  With "!" global options are
+				set.
+				If you use ":compiler foo" in "file.foo" and
+				then ":compiler! bar" in another buffer, Vim
+				will keep on using "foo" in "file.foo".
+				{not available when compiled without the
+				|+eval| feature}
+
+
+The Vim plugins in the "compiler" directory will set options to use the
+selected compiler.  For `:compiler` local options are set, for `:compiler!`
+global options.
+							*current_compiler*
+To support older Vim versions, the plugins always use "current_compiler" and
+not "b:current_compiler".  What the command actually does is the following:
+
+- Delete the "current_compiler" and "b:current_compiler" variables.
+- Define the "CompilerSet" user command.  With "!" it does ":set", without "!"
+  it does ":setlocal".
+- Execute ":runtime! compiler/{name}.vim".  The plugins are expected to set
+  options with "CompilerSet" and set the "current_compiler" variable to the
+  name of the compiler.
+- Delete the "CompilerSet" user command.
+- Set "b:current_compiler" to the value of "current_compiler".
+- Without "!" the old value of "current_compiler" is restored.
+
+
+For writing a compiler plugin, see |write-compiler-plugin|.
+
+
+DOTNET							*compiler-dotnet*
+
+The .NET CLI compiler outputs both errors and warnings by default. The output
+may be limited to include only errors, by setting the g:dotnet_errors_only
+variable to |v:true|.
+
+The associated project name is included in each error and warning. To suppress
+the project name, set the g:dotnet_show_project_file variable to |v:false|.
+
+Example: limit output to only display errors, and suppress the project name: >
+	let dotnet_errors_only = v:true
+	let dotnet_show_project_file = v:false
+	compiler dotnet
+<
+
+GCC					*quickfix-gcc*	*compiler-gcc*
+
+There's one variable you can set for the GCC compiler:
+
+g:compiler_gcc_ignore_unmatched_lines
+				Ignore lines that don't match any patterns
+				defined for GCC.  Useful if output from
+				commands run from make are generating false
+				positives.
+
+
+MANX AZTEC C				*quickfix-manx* *compiler-manx*
+
+To use Vim with Manx's Aztec C compiler on the Amiga you should do the
+following:
+- Set the CCEDIT environment variable with the command: >
+	mset "CCEDIT=vim -q"
+- Compile with the -qf option.  If the compiler finds any errors, Vim is
+  started and the cursor is positioned on the first error.  The error message
+  will be displayed on the last line.  You can go to other errors with the
+  commands mentioned above.  You can fix the errors and write the file(s).
+- If you exit Vim normally the compiler will re-compile the same file.  If you
+  exit with the :cq command, the compiler will terminate.  Do this if you
+  cannot fix the error, or if another file needs to be compiled first.
+
+There are some restrictions to the Quickfix mode on the Amiga.  The
+compiler only writes the first 25 errors to the errorfile (Manx's
+documentation does not say how to get more).  If you want to find the others,
+you will have to fix a few errors and exit the editor.  After recompiling,
+up to 25 remaining errors will be found.
+
+If Vim was started from the compiler, the :sh and some :!  commands will not
+work, because Vim is then running in the same process as the compiler and
+stdin (standard input) will not be interactive.
+
+
+PERL					*quickfix-perl* *compiler-perl*
+
+The Perl compiler plugin doesn't actually compile, but invokes Perl's internal
+syntax checking feature and parses the output for possible errors so you can
+correct them in quick-fix mode.
+
+Warnings are forced regardless of "no warnings" or "$^W = 0" within the file
+being checked.  To disable this set g:perl_compiler_force_warnings to a zero
+value.  For example: >
+	let g:perl_compiler_force_warnings = 0
+
+
+PYUNIT COMPILER						*compiler-pyunit*
+
+This is not actually a compiler, but a unit testing framework for the
+Python language.  It is included into standard Python distribution
+starting from version 2.0.  For older versions, you can get it from
+http://pyunit.sourceforge.net.
+
+When you run your tests with the help of the framework, possible errors
+are parsed by Vim and presented for you in quick-fix mode.
+
+Unfortunately, there is no standard way to run the tests.
+The alltests.py script seems to be used quite often, that's all.
+Useful values for the 'makeprg' options therefore are:
+ setlocal makeprg=./alltests.py " Run a testsuite
+ setlocal makeprg=python\ %:S   " Run a single testcase
+
+Also see http://vim.sourceforge.net/tip_view.php?tip_id=280.
+
+
+TEX COMPILER						*compiler-tex*
+
+Included in the distribution compiler for TeX ($VIMRUNTIME/compiler/tex.vim)
+uses make command if possible.  If the compiler finds a file named "Makefile"
+or "makefile" in the current directory, it supposes that you want to process
+your *TeX files with make, and the makefile does the right work.  In this case
+compiler sets 'errorformat' for *TeX output and leaves 'makeprg' untouched.  If
+neither "Makefile" nor "makefile" is found, the compiler will not use make.
+You can force the compiler to ignore makefiles by defining
+b:tex_ignore_makefile or g:tex_ignore_makefile variable (they are checked for
+existence only).
+
+If the compiler chose not to use make, it needs to choose a right program for
+processing your input.  If b:tex_flavor or g:tex_flavor (in this precedence)
+variable exists, it defines TeX flavor for :make (actually, this is the name
+of executed command), and if both variables do not exist, it defaults to
+"latex".  For example, while editing chapter2.tex \input-ed from mypaper.tex
+written in AMS-TeX: >
+
+	:let b:tex_flavor = 'amstex'
+	:compiler tex
+<	[editing...] >
+	:make mypaper
+
+Note that you must specify a name of the file to process as an argument (to
+process the right file when editing \input-ed or \include-ed file; portable
+solution for substituting % for no arguments is welcome).  This is not in the
+semantics of make, where you specify a target, not source, but you may specify
+filename without extension ".tex" and mean this as "make filename.dvi or
+filename.pdf or filename.some_result_extension according to compiler".
+
+Note: tex command line syntax is set to usable both for MikTeX (suggestion
+by Srinath Avadhanula) and teTeX (checked by Artem Chuprina).  Suggestion
+from |errorformat-LaTeX| is too complex to keep it working for different
+shells and OSes and also does not allow to use other available TeX options,
+if any.  If your TeX doesn't support "-interaction=nonstopmode", please
+report it with different means to express \nonstopmode from the command line.
+
+=============================================================================
+7. The error format					*error-file-format*
+
+					*errorformat* *E372* *E373* *E374*
+						*E375* *E376* *E377* *E378*
+The 'errorformat' option specifies a list of formats that are recognized.  The
+first format that matches with an error message is used.  You can add several
+formats for different messages your compiler produces, or even entries for
+multiple compilers.  See |efm-entries|.
+
+Each entry in 'errorformat' is a scanf-like string that describes the format.
+First, you need to know how scanf works.  Look in the documentation of your
+C compiler.  Below you find the % items that Vim understands.  Others are
+invalid.
+
+Special characters in 'errorformat' are comma and backslash.  See
+|efm-entries| for how to deal with them.  Note that a literal "%" is matched
+by "%%", thus it is not escaped with a backslash.
+Keep in mind that in the `:make` and `:grep` output all NUL characters are
+replaced with SOH (0x01).
+
+Note: By default the difference between upper and lowercase is ignored.  If
+you want to match case, add "\C" to the pattern |/\C|.
+
+Vim will read lines of any length, but only the first 4095 bytes are used, the
+rest is ignored.  Items can only be 1023 bytes long.
+
+
+Basic items
+
+	%f		file name (finds a string)
+	%b		buffer number (finds a number)
+	%o		module name (finds a string)
+	%l		line number (finds a number)
+	%e		end line number (finds a number)
+	%c		column number (finds a number representing character
+			column of the error, byte index, a <tab> is 1
+			character column)
+	%v		virtual column number (finds a number representing
+			screen column of the error (1 <tab> == 8 screen
+			columns))
+	%k		end column number (finds a number representing
+			the character column of the error, byte index, or a
+			number representing screen end column of the error if
+			it's used with %v)
+	%t		error type (finds a single character):
+			    e - error message
+			    w - warning message
+			    i - info message
+			    n - note message
+	%n		error number (finds a number)
+	%m		error message (finds a string)
+	%r		matches the "rest" of a single-line file message %O/P/Q
+	%p		pointer line (finds a sequence of '-', '.', ' ' or
+			tabs and uses the length for the column number)
+	%*{conv}	any scanf non-assignable conversion
+	%%		the single '%' character
+	%s		search text (finds a string)
+
+The "%f" conversion may depend on the current 'isfname' setting.  "~/" is
+expanded to the home directory and environment variables are expanded.
+
+The "%f" and "%m" conversions have to detect the end of the string.  This
+normally happens by matching following characters and items.  When nothing is
+following the rest of the line is matched.  If "%f" is followed by a '%' or a
+backslash, it will look for a sequence of 'isfname' characters.
+
+On MS-Windows a leading "C:" will be included in "%f", even when using "%f:".
+This means that a file name which is a single alphabetical letter will not be
+detected.
+
+The "%b" conversion is used to parse a buffer number.  This is useful for
+referring to lines in a scratch buffer or a buffer with no name.  If a buffer
+with the matching number doesn't exist, then that line is used as a non-error
+line.
+
+The "%p" conversion is normally followed by a "^".  It's used for compilers
+that output a line like: >
+	    ^
+or >
+   ---------^
+to indicate the column of the error.  This is to be used in a multi-line error
+message.  See |errorformat-javac| for a  useful example.
+
+The "%s" conversion specifies the text to search for, to locate the error line.
+The text is used as a literal string.  The anchors "^" and "$" are added to
+the text to locate the error line exactly matching the search text and the
+text is prefixed with the "\V" atom to make it "very nomagic".  The "%s"
+conversion can be used to locate lines without a line number in the error
+output.  Like the output of the "grep" shell command.
+When the pattern is present the line number will not be used.
+
+The "%o" conversion specifies the module name in quickfix entry.  If present
+it will be used in quickfix error window instead of the filename.  The module
+name is used only for displaying purposes, the file name is used when jumping
+to the file.
+
+Changing directory
+
+The following uppercase conversion characters specify the type of special
+format strings.  At most one of them may be given as a prefix at the beginning
+of a single comma-separated format pattern.
+Some compilers produce messages that consist of directory names that have to
+be prepended to each file name read by %f (example: GNU make).  The following
+codes can be used to scan these directory names; they will be stored in an
+internal directory stack.					*E379*
+	%D		"enter directory" format string; expects a following
+			  %f that finds the directory name
+	%X		"leave directory" format string; expects following %f
+
+When defining an "enter directory" or "leave directory" format, the "%D" or
+"%X" has to be given at the start of that substring.  Vim tracks the directory
+changes and prepends the current directory to each erroneous file found with a
+relative path.  See |quickfix-directory-stack| for details, tips and
+limitations.
+
+
+Multi-line messages				*errorformat-multi-line*
+
+It is possible to read the output of programs that produce multi-line
+messages, i.e. error strings that consume more than one line.  Possible
+prefixes are:
+	%E		start of a multi-line error message
+	%W		start of a multi-line warning message
+	%I		start of a multi-line informational message
+	%N		start of a multi-line note message
+	%A		start of a multi-line message (unspecified type)
+	%>		for next line start with current pattern again |efm-%>|
+	%C		continuation of a multi-line message
+	%Z		end of a multi-line message
+These can be used with '+' and '-', see |efm-ignore| below.
+
+Using "\n" in the pattern won't work to match multi-line messages.
+
+Example: Your compiler happens to write out errors in the following format
+(leading line numbers not being part of the actual output):
+
+     1	Error 275 ~
+     2	line 42 ~
+     3	column 3 ~
+     4	' ' expected after '--' ~
+
+The appropriate error format string has to look like this: >
+   :set efm=%EError\ %n,%Cline\ %l,%Ccolumn\ %c,%Z%m
+
+And the |:clist| error message generated for this error is:
+
+ 1:42 col 3 error 275:  ' ' expected after '--'
+
+Another example: Think of a Python interpreter that produces the following
+error message (line numbers are not part of the actual output):
+
+     1	==============================================================
+     2	FAIL: testGetTypeIdCachesResult (dbfacadeTest.DjsDBFacadeTest)
+     3	--------------------------------------------------------------
+     4	Traceback (most recent call last):
+     5	  File "unittests/dbfacadeTest.py", line 89, in testFoo
+     6	    self.assertEquals(34, dtid)
+     7	  File "/usr/lib/python2.2/unittest.py", line 286, in
+     8	 failUnlessEqual
+     9	    raise self.failureException, \
+    10	AssertionError: 34 != 33
+    11
+    12	--------------------------------------------------------------
+    13	Ran 27 tests in 0.063s
+
+Say you want |:clist| write the relevant information of this message only,
+namely:
+ 5 unittests/dbfacadeTest.py:89:  AssertionError: 34 != 33
+
+Then the error format string could be defined as follows: >
+  :set efm=%C\ %.%#,%A\ \ File\ \"%f\"\\,\ line\ %l%.%#,%Z%[%^\ ]%\\@=%m
+
+Note that the %C string is given before the %A here: since the expression
+' %.%#' (which stands for the regular expression ' .*') matches every line
+starting with a space, followed by any characters to the end of the line,
+it also hides line 7 which would trigger a separate error message otherwise.
+Error format strings are always parsed pattern by pattern until the first
+match occurs.
+							*efm-%>*
+The %> item can be used to avoid trying patterns that appear earlier in
+'errorformat'.  This is useful for patterns that match just about anything.
+For example, if the error looks like this:
+
+	Error in line 123 of foo.c: ~
+	unknown variable "i" ~
+
+This can be found with: >
+	:set efm=xxx,%E%>Error in line %l of %f:,%Z%m
+Where "xxx" has a pattern that would also match the second line.
+
+Important: There is no memory of what part of the errorformat matched before;
+every line in the error file gets a complete new run through the error format
+lines.  For example, if one has: >
+  setlocal efm=aa,bb,cc,dd,ee
+Where aa, bb, etc. are error format strings.  Each line of the error file will
+be matched to the pattern aa, then bb, then cc, etc.  Just because cc matched
+the previous error line does _not_ mean that dd will be tried first on the
+current line, even if cc and dd are multi-line errorformat strings.
+
+
+
+Separate file name			*errorformat-separate-filename*
+
+These prefixes are useful if the file name is given once and multiple messages
+follow that refer to this file name.
+	%O		single-line file message: overread the matched part
+	%P		single-line file message: push file %f onto the stack
+	%Q		single-line file message: pop the last file from stack
+
+Example: Given a compiler that produces the following error logfile (without
+leading line numbers):
+
+     1	[a1.tt]
+     2	(1,17)  error: ';' missing
+     3	(21,2)  warning: variable 'z' not defined
+     4	(67,3)  error: end of file found before string ended
+     5
+     6	[a2.tt]
+     7
+     8	[a3.tt]
+     9	NEW compiler v1.1
+    10	(2,2)   warning: variable 'x' not defined
+    11	(67,3)  warning: 's' already defined
+
+This logfile lists several messages for each file enclosed in [...] which are
+properly parsed by an error format like this: >
+  :set efm=%+P[%f],(%l\\,%c)%*[\ ]%t%*[^:]:\ %m,%-Q
+
+A call of |:clist| writes them accordingly with their correct filenames:
+
+  2 a1.tt:1 col 17 error: ';' missing
+  3 a1.tt:21 col 2 warning: variable 'z' not defined
+  4 a1.tt:67 col 3 error: end of file found before string ended
+  8 a3.tt:2 col 2 warning: variable 'x' not defined
+  9 a3.tt:67 col 3 warning: 's' already defined
+
+Unlike the other prefixes that all match against whole lines, %P, %Q and %O
+can be used to match several patterns in the same line.  Thus it is possible
+to parse even nested files like in the following line:
+  {"file1" {"file2" error1} error2 {"file3" error3 {"file4" error4 error5}}}
+The %O then parses over strings that do not contain any push/pop file name
+information.  See |errorformat-LaTeX| for an extended example.
+
+
+Ignoring and using whole messages			*efm-ignore*
+
+The codes '+' or '-' can be combined with the uppercase codes above; in that
+case they have to precede the letter, e.g. '%+A' or '%-G':
+	%-		do not include the matching multi-line in any output
+	%+		include the whole matching line in the %m error string
+
+One prefix is only useful in combination with '+' or '-', namely %G.  It parses
+over lines containing general information like compiler version strings or
+other headers that can be skipped.
+	%-G		ignore this message
+	%+G		general message
+
+
+Pattern matching
+
+The scanf()-like "%*[]" notation is supported for backward-compatibility
+with previous versions of Vim.  However, it is also possible to specify
+(nearly) any Vim supported regular expression in format strings.
+Since meta characters of the regular expression language can be part of
+ordinary matching strings or file names (and therefore internally have to
+be escaped), meta symbols have to be written with leading '%':
+	%\		The single '\' character.  Note that this has to be
+			escaped ("%\\") in ":set errorformat=" definitions.
+	%.		The single '.' character.
+	%#		The single '*'(!) character.
+	%^		The single '^' character.  Note that this is not
+			useful, the pattern already matches start of line.
+	%$		The single '$' character.  Note that this is not
+			useful, the pattern already matches end of line.
+	%[		The single '[' character for a [] character range.
+	%~		The single '~' character.
+When using character classes in expressions (see |/\i| for an overview),
+terms containing the "\+" quantifier can be written in the scanf() "%*"
+notation.  Example: "%\\d%\\+" ("\d\+", "any number") is equivalent to "%*\\d".
+Important note: The \(...\) grouping of sub-matches can not be used in format
+specifications because it is reserved for internal conversions.
+
+
+Multiple entries in 'errorformat'			*efm-entries*
+
+To be able to detect output from several compilers, several format patterns
+may be put in 'errorformat', separated by commas (note: blanks after the comma
+are ignored).  The first pattern that has a complete match is used.  If no
+match is found, matching parts from the last one will be used, although the
+file name is removed and the error message is set to the whole message.  If
+there is a pattern that may match output from several compilers (but not in a
+right way), put it after one that is more restrictive.
+
+To include a comma in a pattern precede it with a backslash (you have to type
+two in a ":set" command).  To include a backslash itself give two backslashes
+(you have to type four in a ":set" command).  You also need to put a backslash
+before a space for ":set".
+
+
+Valid matches						*quickfix-valid*
+
+If a line does not completely match one of the entries in 'errorformat', the
+whole line is put in the error message and the entry is marked "not valid"
+These lines are skipped with the ":cn" and ":cp" commands (unless there is
+no valid line at all).  You can use ":cl!" to display all the error messages.
+
+If the error format does not contain a file name Vim cannot switch to the
+correct file.  You will have to do this by hand.
+
+
+Examples
+
+The format of the file from the Amiga Aztec compiler is:
+
+	filename>linenumber:columnnumber:errortype:errornumber:errormessage
+
+	filename	name of the file in which the error was detected
+	linenumber	line number where the error was detected
+	columnnumber	column number where the error was detected
+	errortype	type of the error, normally a single 'E' or 'W'
+	errornumber	number of the error (for lookup in the manual)
+	errormessage	description of the error
+
+This can be matched with this 'errorformat' entry:
+	%f>%l:%c:%t:%n:%m
+
+Some examples for C compilers that produce single-line error outputs:
+%f:%l:\ %t%*[^0123456789]%n:\ %m	for Manx/Aztec C error messages
+					(scanf() doesn't understand [0-9])
+%f\ %l\ %t%*[^0-9]%n:\ %m		for SAS C
+\"%f\"\\,%*[^0-9]%l:\ %m		for generic C compilers
+%f:%l:\ %m				for GCC
+%f:%l:\ %m,%Dgmake[%*\\d]:\ Entering\ directory\ `%f',
+%Dgmake[%*\\d]:\ Leaving\ directory\ `%f'
+					for GCC with gmake (concat the lines!)
+%f(%l)\ :\ %*[^:]:\ %m			old SCO C compiler (pre-OS5)
+%f(%l)\ :\ %t%*[^0-9]%n:\ %m		idem, with error type and number
+%f:%l:\ %m,In\ file\ included\ from\ %f:%l:,\^I\^Ifrom\ %f:%l%m
+					for GCC, with some extras
+
+Extended examples for the handling of multi-line messages are given below,
+see |errorformat-Jikes| and |errorformat-LaTeX|.
+
+Note the backslash in front of a space and double quote.  It is required for
+the :set command.  There are two backslashes in front of a comma, one for the
+:set command and one to avoid recognizing the comma as a separator of error
+formats.
+
+
+Filtering messages
+
+If you have a compiler that produces error messages that do not fit in the
+format string, you could write a program that translates the error messages
+into this format.  You can use this program with the ":make" command by
+changing the 'makeprg' option.  For example: >
+   :set mp=make\ \\\|&\ error_filter
+The backslashes before the pipe character are required to avoid it to be
+recognized as a command separator.  The backslash before each space is
+required for the set command.
+
+=============================================================================
+8. The directory stack				*quickfix-directory-stack*
+
+Quickfix maintains a stack for saving all used directories parsed from the
+make output.  For GNU-make this is rather simple, as it always prints the
+absolute path of all directories it enters and leaves.  Regardless if this is
+done via a 'cd' command in the makefile or with the parameter "-C dir" (change
+to directory before reading the makefile).  It may be useful to use the switch
+"-w" to force GNU-make to print out the working directory before and after
+processing.
+
+Maintaining the correct directory is more complicated if you don't use
+GNU-make.  AIX-make for example doesn't print any information about its
+working directory.  Then you need to enhance the makefile.  In the makefile of
+LessTif there is a command which echoes "Making {target} in {dir}".  The
+special problem here is that it doesn't print information on leaving the
+directory and that it doesn't print the absolute path.
+
+To solve the problem with relative paths and missing "leave directory"
+messages Vim uses the following algorithm:
+
+1) Check if the given directory is a subdirectory of the current directory.
+   If this is true, store it as the current directory.
+2) If it is not a subdir of the current directory, try if this is a
+   subdirectory of one of the upper directories.
+3) If the directory still isn't found, it is assumed to be a subdirectory
+   of Vim's current directory.
+
+Additionally it is checked for every file, if it really exists in the
+identified directory.  If not, it is searched in all other directories of the
+directory stack (NOT the directory subtree!).  If it is still not found, it is
+assumed that it is in Vim's current directory.
+
+There are limitations in this algorithm.  These examples assume that make just
+prints information about entering a directory in the form "Making all in dir".
+
+1) Assume you have following directories and files:
+   ./dir1
+   ./dir1/file1.c
+   ./file1.c
+
+   If make processes the directory "./dir1" before the current directory and
+   there is an error in the file "./file1.c", you will end up with the file
+   "./dir1/file.c" loaded by Vim.
+
+   This can only be solved with a "leave directory" message.
+
+2) Assume you have following directories and files:
+   ./dir1
+   ./dir1/dir2
+   ./dir2
+
+   You get the following:
+
+   Make output			  Directory interpreted by Vim
+   ------------------------	  ----------------------------
+   Making all in dir1		  ./dir1
+   Making all in dir2		  ./dir1/dir2
+   Making all in dir2		  ./dir1/dir2
+
+   This can be solved by printing absolute directories in the "enter directory"
+   message or by printing "leave directory" messages.
+
+To avoid this problem, ensure to print absolute directory names and "leave
+directory" messages.
+
+Examples for Makefiles:
+
+Unix:
+    libs:
+	    for dn in $(LIBDIRS); do				\
+		(cd $$dn; echo "Entering dir '$$(pwd)'"; make); \
+		echo "Leaving dir";				\
+	    done
+
+Add
+    %DEntering\ dir\ '%f',%XLeaving\ dir
+to your 'errorformat' to handle the above output.
+
+Note that Vim doesn't check if the directory name in a "leave directory"
+messages is the current directory.  This is why you could just use the message
+"Leaving dir".
+
+=============================================================================
+9. Specific error file formats			*errorformats*
+
+						*errorformat-Jikes*
+Jikes(TM), a source-to-bytecode Java compiler published by IBM Research,
+produces simple multi-line error messages.
+
+An 'errorformat' string matching the produced messages is shown below.
+The following lines can be placed in the user's |vimrc| to overwrite Vim's
+recognized default formats, or see |:set+=| how to install this format
+additionally to the default. >
+
+  :set efm=%A%f:%l:%c:%*\\d:%*\\d:,
+	\%C%*\\s%trror:%m,
+	\%+C%*[^:]%trror:%m,
+	\%C%*\\s%tarning:%m,
+	\%C%m
+<
+Jikes(TM) produces a single-line error message when invoked with the option
+"+E", and can be matched with the following: >
+
+  :setl efm=%f:%l:%v:%*\\d:%*\\d:%*\\s%m
+<
+						*errorformat-javac*
+This 'errorformat' has been reported to work well for javac, which outputs a
+line with "^" to indicate the column of the error: >
+  :setl efm=%A%f:%l:\ %m,%-Z%p^,%-C%.%#
+or: >
+  :setl efm=%A%f:%l:\ %m,%+Z%p^,%+C%.%#,%-G%.%#
+<
+Here is an alternative from Michael F. Lamb for Unix that filters the errors
+first: >
+  :setl errorformat=%Z%f:%l:\ %m,%A%p^,%-G%*[^sl]%.%#
+  :setl makeprg=javac\ %:S\ 2>&1\ \\\|\ vim-javac-filter
+
+You need to put the following in "vim-javac-filter" somewhere in your path
+(e.g., in ~/bin) and make it executable: >
+   #!/bin/sed -f
+   /\^$/s/\t/\ /g;/:[0-9]\+:/{h;d};/^[ \t]*\^/G;
+
+In English, that sed script:
+- Changes single tabs to single spaces and
+- Moves the line with the filename, line number, error message to just after
+  the pointer line. That way, the unused error text between doesn't break
+  vim's notion of a "multi-line message" and also doesn't force us to include
+  it as a "continuation of a multi-line message."
+
+						*errorformat-ant*
+For ant (http://jakarta.apache.org/) the above errorformat has to be modified
+to honour the leading [javac] in front of each javac output line: >
+  :set efm=%A\ %#[javac]\ %f:%l:\ %m,%-Z\ %#[javac]\ %p^,%-C%.%#
+
+The 'errorformat' can also be configured to handle ant together with either
+javac or jikes.  If you're using jikes, you should tell ant to use jikes' +E
+command line switch which forces jikes to generate one-line error messages.
+This is what the second line (of a build.xml file) below does: >
+  <property name = "build.compiler"       value = "jikes"/>
+  <property name = "build.compiler.emacs" value = "true"/>
+
+The 'errorformat' which handles ant with both javac and jikes is: >
+  :set efm=\ %#[javac]\ %#%f:%l:%c:%*\\d:%*\\d:\ %t%[%^:]%#:%m,
+	   \%A\ %#[javac]\ %f:%l:\ %m,%-Z\ %#[javac]\ %p^,%-C%.%#
+<
+						*errorformat-jade*
+parsing jade (see http://www.jclark.com/) errors is simple: >
+  :set efm=jade:%f:%l:%c:%t:%m
+<
+						*errorformat-LaTeX*
+The following is an example how an 'errorformat' string can be specified
+for the (La)TeX typesetting system which displays error messages over
+multiple lines.  The output of ":clist" and ":cc" etc. commands displays
+multi-lines in a single line, leading white space is removed.
+It should be easy to adopt the above LaTeX errorformat to any compiler output
+consisting of multi-line errors.
+
+The commands can be placed in a |vimrc| file or some other Vim script file,
+e.g. a script containing LaTeX related stuff which is loaded only when editing
+LaTeX sources.
+Make sure to copy all lines of the example (in the given order), afterwards
+remove the comment lines.  For the '\' notation at the start of some lines see
+|line-continuation|.
+
+		First prepare 'makeprg' such that LaTeX will report multiple
+		errors; do not stop when the first error has occurred: >
+ :set makeprg=latex\ \\\\nonstopmode\ \\\\input\\{$*}
+<
+		Start of multi-line error messages: >
+ :set efm=%E!\ LaTeX\ %trror:\ %m,
+	\%E!\ %m,
+<		Start of multi-line warning messages; the first two also
+		include the line number.  Meaning of some regular expressions:
+		  - "%.%#"  (".*")   matches a (possibly empty) string
+		  - "%*\\d" ("\d\+") matches a number >
+	\%+WLaTeX\ %.%#Warning:\ %.%#line\ %l%.%#,
+	\%+W%.%#\ at\ lines\ %l--%*\\d,
+	\%WLaTeX\ %.%#Warning:\ %m,
+<		Possible continuations of error/warning messages; the first
+		one also includes the line number: >
+	\%Cl.%l\ %m,
+	\%+C\ \ %m.,
+	\%+C%.%#-%.%#,
+	\%+C%.%#[]%.%#,
+	\%+C[]%.%#,
+	\%+C%.%#%[{}\\]%.%#,
+	\%+C<%.%#>%.%#,
+	\%C\ \ %m,
+<		Lines that match the following patterns do not contain any
+		important information; do not include them in messages: >
+	\%-GSee\ the\ LaTeX%m,
+	\%-GType\ \ H\ <return>%m,
+	\%-G\ ...%.%#,
+	\%-G%.%#\ (C)\ %.%#,
+	\%-G(see\ the\ transcript%.%#),
+<		Generally exclude any empty or whitespace-only line from
+		being displayed: >
+	\%-G\\s%#,
+<		The LaTeX output log does not specify the names of erroneous
+		source files per line; rather they are given globally,
+		enclosed in parentheses.
+		The following patterns try to match these names and store
+		them in an internal stack.  The patterns possibly scan over
+		the same input line (one after another), the trailing "%r"
+		conversion indicates the "rest" of the line that will be
+		parsed in the next go until the end of line is reached.
+
+		Overread a file name enclosed in '('...')'; do not push it
+		on a stack since the file apparently does not contain any
+		error: >
+	\%+O(%f)%r,
+<		Push a file name onto the stack.  The name is given after '(': >
+	\%+P(%f%r,
+	\%+P\ %\\=(%f%r,
+	\%+P%*[^()](%f%r,
+	\%+P[%\\d%[^()]%#(%f%r,
+<		Pop the last stored file name when a ')' is scanned: >
+	\%+Q)%r,
+	\%+Q%*[^()])%r,
+	\%+Q[%\\d%*[^()])%r
+
+Note that in some cases file names in the LaTeX output log cannot be parsed
+properly.  The parser might have been messed up by unbalanced parentheses
+then.  The above example tries to catch the most relevant cases only.
+You can customize the given setting to suit your own purposes, for example,
+all the annoying "Overfull ..." warnings could be excluded from being
+recognized as an error.
+Alternatively to filtering the LaTeX compiler output, it is also possible
+to directly read the *.log file that is produced by the [La]TeX compiler.
+This contains even more useful information about possible error causes.
+However, to properly parse such a complex file, an external filter should
+be used.  See the description further above how to make such a filter known
+by Vim.
+
+						*errorformat-Perl*
+In $VIMRUNTIME/tools you can find the efm_perl.pl script, which filters Perl
+error messages into a format that quickfix mode will understand.  See the
+start of the file about how to use it.  (This script is deprecated, see
+|compiler-perl|.)
+
+=============================================================================
+10. Customizing the quickfix window		*quickfix-window-function*
+
+The default format for the lines displayed in the quickfix window and location
+list window is:
+
+    <filename>|<lnum> col <col>|<text>
+
+The values displayed in each line correspond to the "bufnr", "lnum", "col" and
+"text" fields returned by the |getqflist()| function.
+
+For some quickfix/location lists, the displayed text needs to be customized.
+For example, if only the filename is present for a quickfix entry, then the
+two "|" field separator characters after the filename are not needed.  Another
+use case is to customize the path displayed for a filename. By default, the
+complete path (which may be too long) is displayed for files which are not
+under the current directory tree. The file path may need to be simplified to a
+common parent directory.
+
+The displayed text can be customized by setting the 'quickfixtextfunc' option
+to a Vim function.  This function will be called with a dict argument and
+should return a List of strings to be displayed in the quickfix or location
+list window. The dict argument will have the following fields:
+
+    quickfix	set to 1 when called for a quickfix list and 0 when called for
+		a location list.
+    winid	for a location list, set to the id of the window with the
+		location list. For a quickfix list, set to 0. Can be used in
+		getloclist() to get the location list entry.
+    id		quickfix or location list identifier
+    start_idx	index of the first entry for which text should be returned
+    end_idx	index of the last entry for which text should be returned
+
+The function should return a single line of text to display in the quickfix
+window for each entry from start_idx to end_idx. The function can obtain
+information about the entries using the |getqflist()| function and specifying
+the quickfix list identifier "id". For a location list, getloclist() function
+can be used with the "winid" argument. If an empty list is returned, then the
+default format is used to display all the entries. If an item in the returned
+list is an empty string, then the default format is used to display the
+corresponding entry.
+
+If a quickfix or location list specific customization is needed, then the
+'quickfixtextfunc' attribute of the list can be set using the |setqflist()| or
+|setloclist()| function. This overrides the global 'quickfixtextfunc' option.
+
+The example below displays the list of old files (|v:oldfiles|) in a quickfix
+window. As there is no line, column number and error text information
+associated with each entry, the 'quickfixtextfunc' function returns only the
+filename.
+Example: >
+    " create a quickfix list from v:oldfiles
+    call setqflist([], ' ', {'lines' : v:oldfiles, 'efm' : '%f',
+					\ 'quickfixtextfunc' : 'QfOldFiles'})
+    func QfOldFiles(info)
+	" get information about a range of quickfix entries
+	let items = getqflist({'id' : a:info.id, 'items' : 1}).items
+	let l = []
+	for idx in range(a:info.start_idx - 1, a:info.end_idx - 1)
+	    " use the simplified file name
+	  call add(l, fnamemodify(bufname(items[idx].bufnr), ':p:.'))
+	endfor
+	return l
+    endfunc
+<
+
+ vim:tw=78:ts=8:noet:ft=help:norl: