xref: /vim-8.2.3635/runtime/doc/various.txt (revision 69a7cb47)
1*various.txt*   For Vim version 7.0aa.  Last change: 2004 Jun 18
2
3
4		  VIM REFERENCE MANUAL    by Bram Moolenaar
5
6
7Various commands					*various*
8
91. Various commands		|various-cmds|
102. Online help			|online-help|
113. Printing			|printing|
124. Using Vim like less or more	|less|
13
14==============================================================================
151. Various commands					*various-cmds*
16
17							*CTRL-L*
18CTRL-L			Clear and redraw the screen (later).
19
20							*:redr* *:redraw*
21:redr[aw][!]		Redraw the screen right now.  When ! is included it is
22			cleared first.
23			Useful to update the screen halfway executing a script
24			or function.  Also when halfway a mapping and
25			'lazyredraw' is set.
26
27						*:redraws* *:redrawstatus*
28:redraws[tatus][!]	Redraw the status line of the current window.  When !
29			is included all status lines are redrawn.
30			Useful to update the status line(s) when 'statusline'
31			includes an item that doesn't cause automatic
32			updating.
33
34							*N<Del>*
35<Del>			When entering a number: Remove the last digit.
36			Note: if you like to use <BS> for this, add this
37			mapping to your .vimrc: >
38				:map CTRL-V <BS>   CTRL-V <Del>
39<			See |:fixdel| if your <Del> key does not do what you
40			want.
41
42:as[cii]	or					*ga* *:as* *:ascii*
43ga			Print the ascii value of the character under the
44			cursor in decimal, hexadecimal and octal.  For
45			example, when the cursor is on a 'R':
46				<R>  82,  Hex 52,  Octal 122 ~
47			When the character is a non-standard ASCII character,
48			but printable according to the 'isprint' option, the
49			non-printable version is also given.  When the
50			character is larger than 127, the <M-x> form is also
51			printed.  For example:
52				<~A>  <M-^A>  129,  Hex 81,  Octal 201 ~
53				<p>  <|~>  <M-~>  254,  Hex fe,  Octal 376 ~
54			(where <p> is a special character)
55			The <Nul> character in a file is stored internally as
56			<NL>, but it will be shown as:
57				<^@>  0,  Hex 00,  Octal 000 ~
58			Mnemonic: Get Ascii value.  {not in Vi}
59
60							*g8*
61g8			Print the hex values of the bytes used in the
62			character under the cursor, assuming it is in |UTF-8|
63			encoding.  This also shows composing characters.
64			Example of a character with three composing
65			characters:
66				e0 b8 81 + e0 b8 b9 + e0 b9 89 ~
67			{not in Vi}
68
69							*:p* *:pr* *:print*
70:[range]p[rint]		Print [range] lines (default current line).
71			Note: If you are looking for a way to print your text
72			file, you need an external program for that.  In the
73			GUI you can use the File.Print menu entry.
74			(For printing on paper see |:hardcopy|)
75
76:[range]p[rint] {count}
77			Print {count} lines, starting with [range] (default
78			current line |cmdline-ranges|).
79
80							*:P* *:Print*
81:[range]P[rint] [count]
82			Just as ":print".  Was apparently added to Vi for
83			people that keep the shift key pressed too long...
84
85							*:l* *:list*
86:[range]l[ist] [count]
87			Same as :print, but display unprintable characters
88			with '^'.
89
90							*:nu* *:number*
91:[range]nu[mber] [count]
92			Same as :print, but precede each line with its line
93			number.  (See also 'highlight' option).
94
95							*:#*
96:[range]# [count]	synonym for :number.
97
98							*:z* *E144*
99:{range}z[+-^.=]{count}	Display several lines of text surrounding the line
100			specified with {range}, or around the current line
101			if there is no {range}.  If there is a {count}, that's
102			how many lines you'll see; otherwise, the current
103			window size is used.
104
105			:z can be used either alone or followed by any of
106			several punctuation marks.  These have the following
107			effect:
108
109			mark   first line    last line      new location   ~
110			----   ----------    ---------      ------------
111			+      current line  1 scr forward  1 scr forward
112			-      1 scr back    current line   current line
113			^      2 scr back    1 scr back     1 scr back
114			.      1/2 scr back  1/2 scr fwd    1/2 src fwd
115			=      1/2 src back  1/2 scr fwd    current line
116
117			Specifying no mark at all is the same as "+".
118			If the mark is "=", a line of dashes is printed
119			around the current line.
120
121:{range}z#[+-^.=]{count}				*:z#*
122			Like ":z", but number the lines.
123			{not in all versions of Vi, not with these arguments}
124
125							*:=*
126:=			Print the last line number.
127
128:{range}=		Prints the last line number in {range}.  For example,
129			this prints the current line number: >
130				:.=
131
132:norm[al][!] {commands}					*:norm* *:normal*
133			Execute Normal mode commands {commands}.  This makes
134			it possible to execute Normal mode commands typed on
135			the command-line.  {commands} is executed like it is
136			typed.  For undo all commands are undone together.
137			If the [!] is given, mappings will not be used.
138			{commands} should be a complete command.  If
139			{commands} does not finish a command, the last one
140			will be aborted as if <Esc> or <C-C> was typed.
141			The display isn't updated while ":normal" is busy.
142			This implies that an insert command must be completed
143			(to start Insert mode, see |:startinsert|).  A ":"
144			command must be completed as well.
145			{commands} cannot start with a space. Put a 1 (one)
146			before it, 1 space is one space.
147			The 'insertmode' option is ignored for {commands}.
148			This command cannot be followed by another command,
149			since any '|' is considered part of the command.
150			This command can be used recursively, but the depth is
151			limited by 'maxmapdepth'.
152			When this command is called from a non-remappable
153			mapping |:noremap|, the argument can be mapped anyway.
154			An alternative is to use |:execute|, which uses an
155			expression as argument.  This allows the use of
156			printable characters.  Example: >
157				:exe "normal \<c-w>\<c-w>"
158<			{not in Vi, of course}
159			{not available when the |+ex_extra| feature was
160			disabled at compile time}
161
162:{range}norm[al][!] {commands}				*:normal-range*
163			Execute Normal mode commands {commands} for each line
164			in the {range}.  Before executing the {commands}, the
165			cursor is positioned in the first column of the range,
166			for each line.  Otherwise it's the same as the
167			":normal" command without a range.
168			{not in Vi}
169			Not available when |+ex_extra| feature was disabled at
170			compile time.
171
172							*:sh* *:shell* *E371*
173:sh[ell]		This command starts a shell.  When the shell exits
174			(after the "exit" command) you return to Vim.  The
175			name for the shell command comes from 'shell' option.
176							*E360*
177			Note: This doesn't work when Vim on the Amiga was
178			started in QuickFix mode from a compiler, because the
179			compiler will have set stdin to a non-interactive
180			mode.
181
182							*:!cmd* *:!* *E34*
183:!{cmd}			Execute {cmd} with the shell.  See also the 'shell'
184			and 'shelltype' option.
185			Any '!' in {cmd} is replaced with the previous
186			external command (see also 'cpoptions').  But not when
187			there is a backslash before the '!', then that
188			backslash is removed.  Example: ":!ls" followed by
189			":!echo ! \! \\!" executes "echo ls ! \!".
190			After the command has been executed, the timestamp of
191			the current file is checked |timestamp|.
192			There cannot be a '|' in {cmd}, see |:bar|.
193			A newline character ends {cmd}, what follows is
194			interpreted as a following ":" command.  However, if
195			there is a backslash before the newline it is removed
196			and {cmd} continues.  It doesn't matter how many
197			backslashes are before the newline, only one is
198			removed.
199			On Unix the command normally runs in a non-interactive
200			shell.  If you want an interactive shell to be used
201			(to use aliases) set 'shellcmdflag' to "-ic".
202			For Win32 also see |:!start|.
203			Vim redraws the screen after the command is finished,
204			because it may have printed any text.  This requires a
205			hit-enter prompt, so that you can read any messages.
206			To avoid this use: >
207				:silent !{cmd}
208<			The screen is not redrawn then, thus you have to use
209			CTRL-L or ":redraw!" if the command did display
210			something.
211			Also see |shell-window|.
212
213							*:!!*
214:!!			Repeat last ":!{cmd}".
215
216							*:ve* *:version*
217:ve[rsion]		Print the version number of the editor.  If the
218			compiler used understands "__DATE__" the compilation
219			date is mentioned.  Otherwise a fixed release-date is
220			shown.
221			The following lines contain information about which
222			features were enabled when Vim was compiled.  When
223			there is a preceding '+', the feature is included,
224			when there is a '-' it is excluded.  To change this,
225			you have to edit feature.h and recompile Vim.
226			To check for this in an expression, see |has()|.
227			Here is an overview of the features.
228			The first column shows the smallest version in which
229			they are included:
230			   T	tiny
231			   S	small
232			   N	normal
233			   B	big
234			   H	huge
235			   m	manually enabled or depends on other features
236			 (none) system dependent
237			Thus if a feature is marked with "N", it is included
238			in the normal, big and huge versions of Vim.
239
240							*+feature-list*
241   *+ARP*		Amiga only: ARP support included
242B  *+arabic*		|Arabic| language support
243N  *+autocmd*		|:autocmd|, automatic commands
244m  *+balloon_eval*	|balloon-eval| support
245N  *+browse*		|:browse| command
246N  *+builtin_terms*	some terminals builtin |builtin-terms|
247B  *++builtin_terms*	maximal terminals builtin |builtin-terms|
248N  *+byte_offset*	support for 'o' flag in 'statusline' option, "go"
249			and ":goto" commands.
250N  *+cindent*		|'cindent'|, C indenting
251N  *+clientserver*	Unix and Win32: Remote invocation |clientserver|
252   *+clipboard*		|clipboard| support
253N  *+cmdline_compl*	command line completion |cmdline-completion|
254N  *+cmdline_hist*	command line history |cmdline-history|
255N  *+cmdline_info*	|'showcmd'| and |'ruler'|
256N  *+comments*		|'comments'| support
257N  *+cryptv*		encryption support |encryption|
258B  *+cscope*		|cscope| support
259N  *+dialog_gui*	Support for |:confirm| with GUI dialog.
260N  *+dialog_con*	Support for |:confirm| with console dialog.
261N  *+dialog_con_gui*	Support for |:confirm| with GUI and console dialog.
262N  *+diff*		|vimdiff| and 'diff'
263N  *+digraphs*		|digraphs| *E196*
264   *+dnd*		Support for DnD into the "~ register |quote_~|.
265B  *+emacs_tags*	|emacs-tags| files
266N  *+eval*		expression evaluation |eval.txt|
267N  *+ex_extra*		Vim's extra Ex commands: |:center|, |:left|,
268			|:normal|, |:retab| and |:right|
269N  *+extra_search*	|'hlsearch'| and |'incsearch'| options.
270B  *+farsi*		|farsi| language
271N  *+file_in_path*	|gf|, |CTRL-W_f| and |<cfile>|
272N  *+find_in_path*	include file searches: |[I|, |:isearch|,
273			|CTRL-W_CTRL-I|, |:checkpath|, etc.
274N  *+folding*		|folding|
275   *+footer*		|gui-footer|
276   *+fork*		Unix only: |fork| shell commands
277N  *+gettext*		message translations |multi-lang|
278   *+GUI_Athena*	Unix only: Athena |GUI|
279   *+GUI_neXtaw*	Unix only: neXtaw |GUI|
280   *+GUI_BeOS*		BeOS only: BeOS |GUI|
281   *+GUI_GTK*		Unix only: GTK+ |GUI|
282   *+GUI_Motif*		Unix only: Motif |GUI|
283   *+GUI_Photon*	QNX only:  Photon |GUI|
284m  *+hangul_input*	Hangul input support |hangul|
285   *+iconv*		Compiled with the |iconv()| function, may have |/dyn|
286N  *+insert_expand*	|insert_expand| Insert mode completion
287N  *+jumplist*		|jumplist|
288B  *+keymap*		|'keymap'|
289B  *+langmap*		|'langmap'|
290N  *+libcall*		|libcall()|
291N  *+linebreak*		|'linebreak'|, |'breakat'| and |'showbreak'|
292N  *+lispindent*	|'lisp'|
293N  *+listcmds*		Vim commands for the list of buffers |buffer-hidden|
294			and argument list |:argdelete|
295N  *+localmap*		Support for mappings local to a buffer |:map-local|
296N  *+menu*		|:menu|
297N  *+mksession*		|:mksession|
298N  *+modify_fname*	|filename-modifiers|
299N  *+mouse*		Mouse handling |mouse-using|
300N  *+mouseshape*	|'mouseshape'|
301B  *+mouse_dec*		Unix only: Dec terminal mouse handling |dec-mouse|
302N  *+mouse_gpm*		Unix only: Linux console mouse handling |gpm-mouse|
303B  *+mouse_netterm*	Unix only: netterm mouse handling |netterm-mouse|
304N  *+mouse_pterm*	QNX only: pterm mouse handling |qnx-terminal|
305N  *+mouse_xterm*	Unix only: xterm mouse handling |xterm-mouse|
306B  *+multi_byte*	Korean and other languages |multibyte|
307   *+multi_byte_ime*	Win32 input method for multibyte chars |multibyte-ime|
308N  *+multi_lang*	non-English language support |multi-lang|
309m  *+netbeans_intg*	|netbeans|
310m  *+ole*		Win32 GUI only: |ole-interface|
311   *+osfiletype*	Support for the 'osfiletype' option and filetype
312			checking in automatic commands.  |autocmd-osfiletypes|
313N  *+path_extra*	Up/downwards search in 'path' and 'tags'
314m  *+perl*		Perl interface |perl|, may have |/dyn|
315   *+postscript*	|:hardcopy| writes a PostScript file
316N  *+printer*		|:hardcopy| command
317m  *+python*		Python interface |python|, may have |/dyn|
318N  *+quickfix*		|:make| and |quickfix| commands
319B  *+rightleft*		Right to left typing |'rightleft'|
320m  *+ruby*		Ruby interface |ruby|, may have |/dyn|
321N  *+scrollbind*	|'scrollbind'|
322B  *+signs*		|:sign|
323N  *+smartindent*	|'smartindent'|
324m  *+sniff*		SniFF interface |sniff|
325N  *+statusline*	Options 'statusline', 'rulerformat' and special
326			formats of 'titlestring' and 'iconstring'
327m  *+sun_workshop*	|workshop|
328N  *+syntax*		Syntax highlighting |syntax|
329   *+system()*		Unix only: opposite of |+fork|
330N  *+tag_binary*	binary searching in tags file |tag-binary-search|
331N  *+tag_old_static*	old method for static tags |tag-old-static|
332m  *+tag_any_white*	any white space allowed in tags file |tag-any-white|
333m  *+tcl*		Tcl interface |tcl|, may have |/dyn|
334   *+terminfo*		uses |terminfo| instead of termcap
335N  *+termresponse*	support for |t_RV| and |v:termresponse|
336N  *+textobjects*	|text-objects| selection
337   *+tgetent*		non-Unix only: able to use external termcap
338N  *+title*		Setting the window title |'title'|
339N  *+toolbar*		|gui-toolbar|
340N  *+user_commands*	User-defined commands. |user-commands|
341N  *+viminfo*		|'viminfo'|
342N  *+vertsplit*		Vertically split windows |:vsplit|
343N  *+virtualedit*	|'virtualedit'|
344S  *+visual*		Visual mode |Visual-mode|
345N  *+visualextra*	extra Visual mode commands |blockwise-operators|
346N  *+vreplace*		|gR| and |gr|
347N  *+wildignore*	|'wildignore'|
348N  *+wildmenu*		|'wildmenu'|
349S  *+windows*		more than one window
350m  *+writebackup*	|'writebackup'| is default on
351m  *+xim*		X input method |xim|
352   *+xfontset*		X fontset support |xfontset|
353   *+xsmp*		XSMP (X session management) support
354   *+xsmp_interact*	interactive XSMP (X session management) support
355N  *+xterm_clipboard*	Unix only: xterm clipboard handling
356m  *+xterm_save*	save and restore xterm screen |xterm-screens|
357N  *+X11*		Unix only: can restore window title |X11|
358
359							*/dyn* *E370* *E448*
360			To some of the features "/dyn" is added when the
361			feature is only available when the related library can
362			be dynamically loaded.
363
364:ve[rsion] {nr}		Is now ignored.  This was previously used to check the
365			version number of a .vimrc file.  It was removed,
366			because you can now use the ":if" command for
367			version-dependent behavior.  {not in Vi}
368
369							*:redi* *:redir*
370:redi[r][!] > {file}	Redirect messages to file {file}.  The messages which
371			are the output of commands are written to that file,
372			until redirection ends.  The messages are also still
373			shown on the screen.  When [!] is included, an
374			existing file is overwritten.  When [!] is omitted,
375			and {file} exists, this command fails.
376			Only one ":redir" can be active at a time.  Calls to
377			":redir" will close any active redirection before
378			starting redirection to the new target.
379			To stop the messages and commands from being echoed to
380			the screen, put the commands in a function and call it
381			with ":silent call Function()".
382			{not in Vi}
383
384:redi[r] >> {file}	Redirect messages to file {file}.  Append if {file}
385			already exists.  {not in Vi}
386
387:redi[r] @{a-zA-Z}	Redirect messages to register {a-z}.  Append to the
388			contents of the register if its name is given
389			uppercase {A-Z}.  {not in Vi}
390
391:redi[r] @*		Redirect messages to the clipboard. {not in Vi}
392
393:redi[r] @"		Redirect messages to the unnamed register. {not in Vi}
394
395:redi[r] END		End redirecting messages.  {not in Vi}
396
397						*:sil* *:silent*
398:sil[ent][!] {command}	Execute {command} silently.  Normal messages will not
399			be given or added to the message history.
400			When [!] is added, error messages will also be
401			skipped, and commands and mappings will not be aborted
402			when an error is detected.  |v:errmsg| is still set.
403			When [!] is not used, an error message will cause
404			further messages to be displayed normally.
405			Redirection, started with |:redir|, will continue as
406			usual, although there might be small differences.
407			This will allow redirecting the output of a command
408			without seeing it on the screen.  Example: >
409			    :redir >/tmp/foobar
410			    :silent g/Aap/p
411			    :redir END
412<			To execute a Normal mode command silently, use the
413			|:normal| command.  For example, to search for a
414			string without messages: >
415			    :silent exe "normal /path\<CR>"
416<			":silent!" is useful to execute a command that may
417			fail, but the failure is to be ignored.  Example: >
418			    :let v:errmsg = ""
419			    :silent! /^begin
420			    :if v:errmsg != ""
421			    : ... pattern was not found
422<			":silent" will also avoid the hit-enter prompt.  When
423			using this for an external command, this may cause the
424			screen to be messed up.  Use |CTRL-L| to clean it up
425			then.
426			":silent menu ..." defines a menu that will not echo a
427			Command-line command.  The command will still produce
428			messages though.  Use ":silent" in the command itself
429			to avoid that: ":silent menu .... :silent command".
430
431						*:verb* *:verbose*
432:[count]verb[ose] {command}
433			Execute {command} with 'verbose' set to [count].  If
434			[count] is omitted one is used. ":0verbose" can be
435			used to set 'verbose' to zero.
436			The additional use of ":silent" makes messages
437			generated but not displayed.
438			The combination of ":silent" and ":verbose" can be
439			used to generate messages and check them with
440			|v:statusmsg| and friends.  For example: >
441				:let v:statusmsg = ""
442				:silent verbose runtime foobar.vim
443				:if v:statusmsg != ""
444				:  " foobar.vim could not be found
445				:endif
446<			When concatenating another command, the ":verbose"
447			only applies to the first one: >
448				:4verbose set verbose | set verbose
449<				  verbose=4 ~
450				  verbose=0 ~
451
452							*K*
453K			Run a program to lookup the keyword under the
454			cursor.  The name of the program is given with the
455			'keywordprg' (kp) option (default is "man").  The
456			keyword is formed of letters, numbers and the
457			characters in 'iskeyword'.  The keyword under or
458			right of the cursor is used.  The same can be done
459			with the command >
460				:!{program} {keyword}
461<			There is an example of a program to use in the tools
462			directory of Vim.  It is called 'ref' and does a
463			simple spelling check.
464			Special cases:
465			- If 'keywordprg' is empty, the ":help" command is
466			  used.  It's a good idea to include more characters
467			  in 'iskeyword' then, to be able to find more help.
468			- When 'keywordprg' is equal to "man", a count before
469			  "K" is inserted after the "man" command and before
470			  the keyword.  For example, using "2K" while the
471			  cursor is on "mkdir", results in: >
472				!man 2 mkdir
473<			- When 'keywordprg' is equal to "man -s", a count
474			  before "K" is inserted after the "-s".  If there is
475			  no count, the "-s" is removed.
476			{not in Vi}
477
478							*v_K*
479{Visual}K		Like "K", but use the visually highlighted text for
480			the keyword.  Only works when the highlighted text is
481			not more than one line.  {not in Vi}
482
483[N]gs							*gs* *:sl* *:sleep*
484:[N]sl[eep] [N]	[m]	Do nothing for [N] seconds.  When [m] is included,
485			sleep for [N] milliseconds. The count for "gs" always
486			uses seconds.  The default is one second. >
487			     :sleep	     "sleep for one second
488			     :5sleep	     "sleep for five seconds
489			     :sleep 100m     "sleep for a hundred milliseconds
490			     10gs	     "sleep for ten seconds
491<			Can be interrupted with CTRL-C (CTRL-Break on MS-DOS).
492			"gs" stands for "goto sleep".  While sleeping the
493			cursor is positioned in the text (if visible).  {not
494			in Vi}
495
496							*g_CTRL-A*
497g CTRL-A		Only when Vim was compiled with MEM_PROFILING defined
498			(which is very rare): print memory usage statistics.
499			Only useful for debugging Vim.
500
501==============================================================================
5022. Online help						*online-help*
503
504			*help* *<Help>* *:h* *:help* *<F1>* *i_<F1>* *i_<Help>*
505<Help>		or
506:h[elp]			Open a window and display the help file in read-only
507			mode.  If there is a help window open already, use
508			that one.  Otherwise, if the current window uses the
509			full width of the screen or is at least 80 characters
510			wide, the help window will appear just above the
511			current window.  Otherwise the new window is put at
512			the very top.
513			The 'helplang' option is used to select a language, if
514			the main help file is available in several languages.
515			{not in Vi}
516
517						*{subject}* *E149* *E661*
518:h[elp] {subject}	Like ":help", additionally jump to the tag {subject}.
519			{subject} can include wildcards like "*", "?" and
520			"[a-z]":
521			   :help z?	jump to help for any "z" command
522			   :help z.	jump to the help for "z."
523			If there is no full match for the pattern, or there
524			are several matches, the "best" match will be used.
525			A sophisticated algorithm is used to decide which
526			match is better than another one.  These items are
527			considered in the computation:
528			- A match with same case is much better than a match
529			  with different case.
530			- A match that starts after a non-alphanumeric
531			  character is better than a match in the middle of a
532			  word.
533			- A match at or near the beginning of the tag is
534			  better than a match further on.
535			- The more alphanumeric characters match, the better.
536			- The shorter the length of the match, the better.
537
538			The 'helplang' option is used to select a language, if
539			the {subject} is available in several languages.
540			To find a tag in a specific language, append "@ab",
541			where "ab" is the two-letter language code.  See
542			|help-translated|.
543
544			Note that the longer the {subject} you give, the less
545			matches will be found.  You can get an idea how this
546			all works by using commandline completion (type CTRL-D
547			after ":help subject").
548			If there are several matches, you can have them listed
549			by hitting CTRL-D.  Example: >
550				:help cont<Ctrl-D>
551<			To use a regexp |pattern|, first do ":help" and then
552			use ":tag {pattern}" in the help window.  The
553			":tnext" command can then be used to jump to other
554			matches, "tselect" to list matches and choose one. >
555				:help index| :tse z.
556<			This command can be followed by '|' and another
557			command, but you don't need to escape the '|' inside a
558			help command.  So these both work: >
559				:help |
560				:help k| only
561<			Note that a space before the '|' is seen as part of
562			the ":help" argument.
563			You can also use <LF> or <CR> to separate the help
564			command from a following command.  You need to type
565			CTRL-V first to insert the <LF> or <CR>.  Example: >
566				:help so<C-V><CR>only
567<			{not in Vi}
568
569:h[elp]! [subject]	Like ":help", but in non-English help files prefer to
570			find a tag in a file with the same language as the
571			current file.  See |help-translated|.
572
573							*:helpg* *:helpgrep*
574:helpg[rep] {pattern}[@xx]
575			Search all help text files and make a list of lines
576			in which {pattern} matches.  Jumps to the first match.
577			The optional [@xx] specifies that only matches in the
578			"xx" language are to be found.
579			You can navigate through the matches with the
580			|quickfix| commands, e.g., |:cnext| to jump to the
581			next one.  Or use |:cwindow| to get the list of
582			matches in the quickfix window.
583			{pattern} is used as a Vim regexp |pattern|.
584			'ignorecase' is not used, add "\c" to ignore case.
585			Example for case sensitive search: >
586				:helpgrep Uganda
587<			Example for case ignoring search: >
588				:helpgrep uganda\c
589<			Example for searching in French help: >
590				:helpgrep backspace@fr
591<			Cannot be followed by another command, everything is
592			used as part of the pattern.  But you can use
593			|:execute| when needed.
594			Compressed help files will not be searched (Debian
595			compresses the help files).
596			{not in Vi}
597
598
599When no argument is given to |:help| the file given with the 'helpfile' option
600will be opened.  Otherwise the specified tag is searched for in all "doc/tags"
601files in the directories specified in the 'runtimepath' option.
602
603The initial height of the help window can be set with the 'helpheight' option
604(default 20).
605
606Jump to specific subjects by using tags.  This can be done in two ways:
607- Use the "CTRL-]" command while standing on the name of a command or option.
608  This only works when the tag is a keyword.  "<C-Leftmouse>" and
609  "g<LeftMouse>" work just like "CTRL-]".
610- use the ":ta {subject}" command.  This also works with non-keyword
611  characters.
612
613Use CTRL-T or CTRL-O to jump back.
614Use ":q" to close the help window.
615
616If there are several matches for an item you are looking for, this is how you
617can jump to each one of them:
6181. Open a help window
6192. Use the ":tag" command with a slash prepended to the tag.  E.g.: >
620	:tag /min
6213. Use ":tnext" to jump to the next matching tag.
622
623It is possible to add help files for plugins and other items.  You don't need
624to change the distributed help files for that.  See |add-local-help|.
625
626To write a local help file, see |write-local-help|.
627
628Note that the title lines from the local help files are automagically added to
629the "LOCAL ADDITIONS" section in the "help.txt" help file |local-additions|.
630This is done when viewing the file in Vim, the file itself is not changed.  It
631is done by going through all help files and obtaining the first line of each
632file.  The files in $VIMRUNTIME/doc are skipped.
633
634							*help-xterm-window*
635If you want to have the help in another xterm window, you could use this
636command: >
637	:!xterm -e vim +help &
638<
639
640			*:helpfind* *:helpf*
641:helpf[ind]		Like |:help|, but use a dialog to enter the argument.
642			Only for backwards compatibility.  It now executes the
643			ToolBar.FindHelp menu entry instead of using a builtin
644			dialog.  {only when compiled with |+GUI_GTK|}
645<			{not in Vi}
646
647					*:helpt* *:helptags*
648				*E154* *E150* *E151* *E152* *E153* *E670*
649:helpt[ags] {dir}	Generate the help tags file(s) for directory {dir}.
650			All "*.txt" and "*.??x" files in the directory are
651			scanned for a help tag definition in between stars.
652			The "*.??x" files are for translated docs, they
653			generate the "tags-??" file, see |help-translated|.
654			The generated tags files are sorted.
655			When there are duplicates an error message is given.
656			An existing tags file is silently overwritten.
657			To rebuild the help tags in the runtime directory
658			(requires write permission there): >
659				:helptags $VIMRUNTIME/doc
660<			{not in Vi}
661
662
663TRANSLATED HELP						*help-translated*
664
665It is possible to add translated help files, next to the original English help
666files.  Vim will search for all help in "doc" directories in 'runtimepath'.
667This is only available when compiled with the |+multi_lang| feature.
668
669A set of translated help files consists of these files:
670
671	help.abx
672	howto.abx
673	...
674	tags-ab
675
676"ab" is the two-letter language code.  Thus for Italian the names are:
677
678	help.itx
679	howto.itx
680	...
681	tags-it
682
683The 'helplang' option can be set to the preferred language(s).  The default is
684set according to the environment.  Vim will first try to find a matching tag
685in the preferred language(s).  English is used when it cannot be found.
686
687To find a tag in a specific language, append "@ab" to a tag, where "ab" is the
688two-letter language code.  Example: >
689	:he user-manual@it
690	:he user-manual@en
691The first one finds the Italian user manual, even when 'helplang' is empty.
692The second one finds the English user manual, even when 'helplang' is set to
693"it".
694
695When using command-line completion for the ":help" command, the "@en"
696extention is only shown when a tag exists for multiple languages.  When the
697tag only exists for English "@en" is omitted.
698
699When using |CTRL-]| or ":help!" in a non-English help file Vim will try to
700find the tag in the same language.  If not found then 'helplang' will be used
701to select a language.
702
703Help files must use latin1 or utf-8 encoding.  Vim assumes the encoding is
704utf-8 when finding non-ASCII characters in the first line.  Thus you must
705translate the header with "For Vim version".
706
707The same encoding must be used for the help files of one language in one
708directory.  You can use a different encoding for different languages and use
709a different encoding for help files of the same language but in a different
710directory.
711
712Hints for translators:
713- Do not translate the tags.  This makes it possible to use 'helplang' to
714  specify the preferred language.  You may add new tags in your language.
715- When you do not translate a part of a file, add tags to the English version,
716  using the "tag@en" notation.
717- Make a package with all the files and the tags file available for download.
718  Users can drop it in one of the "doc" directories and start use it.
719  Report this to Bram, so that he can add a link on www.vim.org.
720- Use the |:helptags| command to generate the tags files.  It will find all
721  languages in the specified directory.
722
723==============================================================================
7243. Printing						*printing*
725
726On MS-Windows Vim can print your text on any installed printer.  On other
727systems a PostScript file is produced.  This can be directly sent to a
728PostScript printer.  For other printers a program like ghostscript needs to be
729used.
730
7313.1 PostScript Printing			|postscript-printing|
7323.2 PostScript Printing Encoding	|postscript-print-encoding|
7333.3 PostScript Printing Troubleshooting |postscript-print-trouble|
7343.4 PostScript Utilities		|postscript-print-util|
7353.5 Formfeed Characters			|printing-formfeed|
736
737{not in Vi}
738{only available when compiled with |+printer| feature}
739
740					*:ha* *:hardcopy* *E237* *E238* *E324*
741:[range]ha[rdcopy][!] [arguments]
742			Send [range] lines (default whole file) to the
743			printer.
744
745			On MS-Windows a dialog is displayed to allow selection
746			of printer, paper size etc. To skip the dialog, use
747			the [!].  In this case the printer defined by
748			'printdevice' is used, or, if 'printdevice' is empty,
749			the system default printer.
750
751			For systems other than MS-Windows, PostScript is
752			written in a temp file and 'printexpr' is used to
753			actually print it.  Then [arguments] can be used by
754			'printexpr' through |v:cmdarg|.  Otherwise [arguments]
755			is ignored.  'printoptions' can be used to specify
756			paper size, duplex, etc.
757
758:[range]ha[rdcopy][!] >{filename}
759			As above, but write the resulting PostScript in file
760			{filename}.
761			Things like "%" are expanded |cmdline-special|
762			Careful: An existing file is silently overwritten.
763			{only available when compiled with the |+postscript|
764			feature}
765			On MS-Windows use the "print to file" feature of the
766			printer driver.
767
768Progress is displayed during printing as a page number and a percentage.  To
769abort printing use the interrupt key (CTRL-C or, on MS-systems, CTRL-Break).
770
771Printer output is controlled by the 'printfont' and 'printoptions' options.
772'printheader' specifies the format of a page header.
773
774The printed file is always limited to the selected margins, irrespective of
775the current window's 'wrap' or 'linebreak' settings.  The "wrap" item in
776'printoptions' can be used to switch wrapping off.
777The current highlighting colors are used in the printout, with the following
778considerations:
7791) The normal background is always rendered as white (i.e. blank paper.)
7802) White text or the default foreground is rendered as black, so that it shows
781   up!
7823) If 'background' is "dark", then the colours are darkened to compensate for
783   the fact that otherwise they would be too bright to show up clearly on
784   white paper.
785
786
7873.1 PostScript Printing					*postscript-printing*
788						*E455* *E456* *E457* *E624*
789Provided you have enough disk space there should be no problems generating a
790PostScript file.  You need to have the runtime files correctly installed (if
791you can find the help files, they probably are).
792
793There are currently a number of limitations with PostScript printing:
794
795- 'printfont' - The font name is ignored (the Courier family is always used -
796  it should be available on all PostScript printers) but the font size is
797  used.
798
799- 'printoptions' - The duplex setting is used when generating PostScript
800  output, but it is up to the printer to take notice of the setting.  If the
801  printer does not support duplex printing then it should be silently ignored.
802  Some printers, however, don't print at all.
803
804- 8-bit support - While a number of 8-bit print character encodings are
805  supported it is possible that some characters will not print.  Whether a
806  character will print depends on the font in the printer knowing the
807  character.  Missing characters will be replaced with an upside down question
808  mark, or a space if that character is also not known by the font.  It may be
809  possible to get all the characters in an encoding to print by installing a
810  new version of the Courier font family.
811
812- Multi-byte support - Currently VIM will try to convert multi-byte characters
813  to the 8-bit encoding specified by 'printencoding' (or latin1 if it is
814  empty).  Any characters that are not successfully converted are shown as
815  unknown characters.  Printing will fail if VIM cannot convert the multi-byte
816  to the 8-bit encoding.
817
818
8193.2 Custom 8-bit Print Character Encodings	*postscript-print-encoding*
820								*E618* *E619*
821To use your own print character encoding when printing 8-bit character data
822you need to define your own PostScript font encoding vector.  Details on how
823to to define a font encoding vector is beyond the scope of this help file, but
824you can find details in the PostScript Language Reference Manual, 3rd Edition,
825published by Addison-Wesley and available in PDF form at
826http://www.adobe.com/.  The following describes what you need to do for VIM to
827locate and use your print character encoding.
828
829i.   Decide on a unique name for your encoding vector, one that does not clash
830     with any of the recognized or standard encoding names that VIM uses (see
831     |encoding-names| for a list), and that no one else is likely to use.
832ii.  Copy $VIMRUNTIME/print/latin1.ps to the print subdirectory in your
833     'runtimepath' and rename it with your unique name.
834iii. Edit your renamed copy of latin1.ps, replacing all occurrences of latin1
835     with your unique name (don't forget the line starting %%Title:), and
836     modify the array of glyph names to define your new encoding vector.  The
837     array must have exactly 256 entries or you will not be able to print!
838iv.  Within VIM, set 'printencoding' to your unique encoding name and then
839     print your file.  VIM will now use your custom print character encoding.
840
841VIM will report an error with the resource file if you change the order or
842content of the first 3 lines, other than the name of the encoding on the line
843starting %%Title: or the version number on the line starting %%Version:.
844
845[Technical explanation for those that know PostScript - VIM looks for a file
846with the same name as the encoding it will use when printing.  The file
847defines a new PostScript Encoding resource called /VIM-name, where name is the
848print character encoding VIM will use.]
849
850
8513.3 PostScript Printing Troubleshooting		*postscript-print-trouble*
852									*E621*
853Usually the only sign of a problem when printing with PostScript is that your
854printout does not appear.  If you are lucky you may get a printed page that
855tells you the PostScript operator that generated the error that prevented the
856print job completing.
857
858There are a number of possible causes as to why the printing may have failed:
859
860- Wrong version of the prolog resource file.  The prolog resource file
861  contains some PostScript that VIM needs to be able to print.  Each version
862  of VIM needs one particular version.  Make sure you have correctly installed
863  the runtime files, and don't have any old versions of a file called prolog
864  in the print directory in your 'runtimepath' directory.
865
866- Paper size.  Some PostScript printers will abort printing a file if they do
867  not support the requested paper size.  By default VIM uses A4 paper.  Find
868  out what size paper your printer normally uses and set the appropriate paper
869  size with 'printoptions'.  If you cannot find the name of the paper used,
870  measure a sheet and compare it with the table of supported paper sizes listed
871  for 'printoptions', using the paper that is closest in both width AND height.
872  Note: The dimensions of actual paper may vary slightly from the ones listed.
873  If there is no paper listed close enough, then you may want to try psresize
874  from PSUtils, discussed below.
875
876- Two-sided printing (duplex).  Normally a PostScript printer that does not
877  support two-sided printing will ignore any request to do it.  However, some
878  printers may abort the job altogether.  Try printing with duplex turned off.
879  Note: Duplex prints can be achieved manually using PS utils - see below.
880
881- Collated printing.  As with Duplex printing, most PostScript printers that
882  do not support collating printouts will ignore a request to do so.  Some may
883  not.  Try printing with collation turned off.
884
885- Syntax highlighting.  Some print management code may prevent the generated
886  PostScript file from being printed on a black and white printer when syntax
887  highlighting is turned on, even if solid black is the only color used.  Try
888  printing with syntax highlighting turned off.
889
890A safe printoptions setting to try is: >
891
892	:set printoptions=paper:A4,duplex:off,collate:n,syntax:n
893
894Replace "A4" with the paper size that best matches your printer paper.
895
896
8973.4 PostScript Utilities			*postscript-print-util*
898
8993.4.1 Ghostscript
900
901Ghostscript is a PostScript and PDF interpreter that can be used to display
902and print on non-PostScript printers PostScript and PDF files.  It can also
903generate PDF files from PostScript.
904
905Ghostscript will run on a wide variety of platforms.
906
907There are three available versions:
908
909- AFPL Ghostscript (formerly Aladdin Ghostscript) which is free for
910  non-commercial use.  It can be obtained from:
911
912    http://www.cs.wisc.edu/~ghost/
913
914- GNU Ghostscript which is available under the GNU General Public License.  It
915  can be obtained from:
916
917    ftp://mirror.cs.wisc.edu/pub/mirrors/ghost/gnu/
918
919- A commercial version for inclusion in commercial products.
920
921Additional information on Ghostscript can also be found at:
922
923  http://www.ghostscript.com/
924
925Support for a number of non PostScript printers is provided in the
926distribution as standard, but if you cannot find support for your printer
927check the Ghostscript site for other printers not included by default.
928
929
9303.4.2 Ghostscript Previewers.
931
932The interface to Ghostscript is very primitive so a number of graphical front
933ends have been created.  These allow easier PostScript file selection,
934previewing at different zoom levels, and printing.  Check supplied
935documentation for full details.
936
937X11
938
939- Ghostview.  Obtainable from:
940
941    http://www.cs.wisc.edu/~ghost/gv/
942
943- gv.  Derived from Ghostview.  Obtainable from:
944
945    http://wwwthep.physik.uni-mainz.de/~plass/gv/
946
947  Copies (possibly not the most recent) can be found at:
948
949    http://www.cs.wisc.edu/~ghost/gv/
950
951OpenVMS
952
953- Is apparently supported in the main code now (untested).  See:
954
955    http://wwwthep.physik.uni-mainz.de/~plass/gv/
956
957Windows and OS/2
958
959- GSview.  Obtainable from:
960
961    http://www.cs.wisc.edu/~ghost/gsview/
962
963DOS
964
965- ps_view.  Obtainable from:
966
967    ftp://ftp.pg.gda.pl/pub/TeX/support/ps_view/
968    ftp://ftp.dante.de/tex-archive/support/ps_view/
969
970Linux
971
972- GSview.  Linux version of the popular Windows and OS/2 previewer.
973  Obtainable from:
974
975    http://www.cs.wisc.edu/~ghost/gsview/
976
977- BMV.  Different from Ghostview and gv in that it doesn't use X but svgalib.
978  Obtainable from:
979
980    ftp://sunsite.unc.edu/pub/Linux/apps/graphics/viewers/svga/bmv-1.2.tgz
981
982
9833.4.3 PSUtils
984
985PSUtils is a collection of utility programs for manipulating PostScript
986documents.  Binary distributions are available for many platforms, as well as
987the full source.  PSUtils can be found at:
988
989  http://knackered.org/angus/psutils
990
991The utilities of interest include:
992
993- psnup.     Convert PS files for N-up printing.
994- psselect.  Select page range and order of printing.
995- psresize.  Change the page size.
996- psbook.    Reorder and lay out pages ready for making a book.
997
998The output of one program can be used as the input to the next, allowing for
999complex print document creation.
1000
1001
1002N-UP PRINTING
1003
1004The psnup utility takes an existing PostScript file generated from VIM and
1005convert it to an n-up version.  The simplest way to create a 2-up printout is
1006to first create a PostScript file with: >
1007
1008	:hardcopy > test.ps
1009
1010Then on your command line execute: >
1011
1012	psnup -n 2 test.ps final.ps
1013
1014Note: You may get warnings from some Ghostscript previewers for files produced
1015by psnup - these may safely be ignored.
1016
1017Finally print the file final.ps to your PostScript printer with your
1018platform's print command.  (You will need to delete the two PostScript files
1019afterwards yourself.)  'printexpr' could be modified to perform this extra
1020step before printing.
1021
1022
1023ALTERNATE DUPLEX PRINTING
1024
1025It is possible to achieve a poor man's version of duplex printing using the PS
1026utility psselect.  This utility has options -e and -o for printing just the
1027even or odd pages of a PS file respectively.
1028
1029First generate a PS file with the 'hardcopy' command, then generate a new
1030files with all the odd and even numbered pages with: >
1031
1032	psselect -o test.ps odd.ps
1033	psselect -e test.ps even.ps
1034
1035Next print odd.ps with your platform's normal print command.  Then take the
1036print output, turn it over and place it back in the paper feeder.  Now print
1037even.ps with your platform's print command.  All the even pages should now
1038appear on the back of the odd pages.
1039
1040There a couple of points to bear in mind:
1041
10421. Position of the first page.  If the first page is on top of the printout
1043   when printing the odd pages then you need to reverse the order that the odd
1044   pages are printed.  This can be done with the -r option to psselect.  This
1045   will ensure page 2 is printed on the back of page 1.
1046   Note: it is better to reverse the odd numbered pages rather than the even
1047   numbered in case there are an odd number of pages in the original PS file.
1048
10492. Paper flipping.  When turning over the paper with the odd pages printed on
1050   them you may have to either flip them horizontally (along the long edge) or
1051   vertically (along the short edge), as well as possibly rotating them 180
1052   degrees.  All this depends on the printer - it will be more obvious for
1053   desktop ink jets than for small office laser printers where the paper path
1054   is hidden from view.
1055
1056
10573.5 Formfeed Characters					*printing-formfeed*
1058
1059By default VIM does not do any special processing of |formfeed| control
1060characters.  Setting the 'printoptions' formfeed item will make VIM recognize
1061formfeed characters and continue printing the current line at the beginning
1062of the first line on a new page.  The use of formfeed characters provides
1063rudimentary print control but there are certain things to be aware of.
1064
1065VIM will always start printing a line (including a line number if enabled)
1066containing a formfeed character, even if it is the first character on the
1067line.  This means if a line starting with a formfeed character is the first
1068line of a page then VIM will print a blank page.
1069
1070Since the line number is printed at the start of printing the line containing
1071the formfeed character, the remainder of the line printed on the new page
1072will not have a line number printed for it (in the same way as the wrapped
1073lines of a long line when wrap in 'printoptions' is enabled).
1074
1075If the formfeed character is the last character on a line, then printing will
1076continue on the second line of the new page, not the first.  This is due to
1077VIM processing the end of the line after the formfeed character and moving
1078down a line to continue printing.
1079
1080Due to the points made above it is recommended that when formfeed character
1081processing is enabled, printing of line numbers is disabled, and that form
1082feed characters are not the last character on a line.  Even then you may need
1083to adjust the number of lines before a formfeed character to prevent
1084accidental blank pages.
1085
1086==============================================================================
10874. Using Vim like less or more					*less*
1088
1089If you use the less or more program to view a file, you don't get syntax
1090highlighting.  Thus you would like to use Vim instead.  You can do this by
1091using the shell script "$VIMRUNTIME/macros/less.sh".
1092
1093This shell script uses the Vim script "$VIMRUNTIME/macros/less.vim".  It sets
1094up mappings to simulate the commands that less supports.  Otherwise, you can
1095still use the Vim commands.
1096
1097This isn't perfect.  For example, when viewing a short file Vim will still use
1098the whole screen.  But it works good enough for most uses, and you get syntax
1099highlighting.
1100
1101The "h" key will give you a short overview of the available commands.
1102
1103 vim:tw=78:ts=8:ft=help:norl:
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