xref: /vim-8.2.3635/runtime/doc/tabpage.txt (revision 2bf24176)
1*tabpage.txt*   For Vim version 7.4.  Last change: 2015 Jan 04
2
3
4		  VIM REFERENCE MANUAL    by Bram Moolenaar
5
6
7Editing with windows in multiple tab pages.		*tab-page* *tabpage*
8
9The commands which have been added to use multiple tab pages are explained
10here.  Additionally, there are explanations for commands that work differently
11when used in combination with more than one tab page.
12
131. Introduction			|tab-page-intro|
142. Commands			|tab-page-commands|
153. Other items			|tab-page-other|
164. Setting 'tabline'		|setting-tabline|
175. Setting 'guitablabel'	|setting-guitablabel|
18
19{Vi does not have any of these commands}
20{not able to use multiple tab pages when the |+windows| feature was disabled
21at compile time}
22
23==============================================================================
241. Introduction						*tab-page-intro*
25
26A tab page holds one or more windows.  You can easily switch between tab
27pages, so that you have several collections of windows to work on different
28things.
29
30Usually you will see a list of labels at the top of the Vim window, one for
31each tab page.  With the mouse you can click on the label to jump to that tab
32page.  There are other ways to move between tab pages, see below.
33
34Most commands work only in the current tab page.  That includes the |CTRL-W|
35commands, |:windo|, |:all| and |:ball| (when not using the |:tab| modifier).
36The commands that are aware of other tab pages than the current one are
37mentioned below.
38
39Tabs are also a nice way to edit a buffer temporarily without changing the
40current window layout.  Open a new tab page, do whatever you want to do and
41close the tab page.
42
43==============================================================================
442. Commands						*tab-page-commands*
45
46OPENING A NEW TAB PAGE:
47
48When starting Vim "vim -p filename ..." opens each file argument in a separate
49tab page (up to 'tabpagemax').  See |-p|
50
51A double click with the mouse in the non-GUI tab pages line opens a new, empty
52tab page.  It is placed left of the position of the click.  The first click
53may select another tab page first, causing an extra screen update.
54
55This also works in a few GUI versions, esp. Win32 and Motif.  But only when
56clicking right of the labels.
57
58In the GUI tab pages line you can use the right mouse button to open menu.
59|tabline-menu|.
60
61:[count]tabe[dit]				*:tabe* *:tabedit* *:tabnew*
62:[count]tabnew
63		Open a new tab page with an empty window, after the current
64		tab page.  If [count] is given the new tab page appears after
65		the tab page [count] otherwise the new tab page will appear
66		after the current one. >
67		    :tabnew	" opens tabpage after the current one
68		    :.tabnew	" as above
69		    :+tabnew	" opens tabpage after the next tab page
70				" note: it is one further than :tabnew
71		    :-tabnew	" opens tabpage before the current one
72		    :0tabnew	" opens tabpage before the first one
73		    :$tabnew	" opens tabpage after the last one
74
75:[count]tabe[dit] [++opt] [+cmd] {file}
76:[count]tabnew [++opt] [+cmd] {file}
77		Open a new tab page and edit {file}, like with |:edit|.
78		For [count] see |:tabnew| above.
79
80:[count]tabf[ind] [++opt] [+cmd] {file}			*:tabf* *:tabfind*
81		Open a new tab page and edit {file} in 'path', like with
82		|:find|.  For [count] see |:tabnew| above.
83		{not available when the |+file_in_path| feature was disabled
84		at compile time}
85
86:[count]tab {cmd}					*:tab*
87		Execute {cmd} and when it opens a new window open a new tab
88		page instead.  Doesn't work for |:diffsplit|, |:diffpatch|,
89		|:execute| and |:normal|.
90		When [count] is omitted the tab page appears after the current
91		one.
92		When [count] is specified the new tab page comes after tab
93		page [count].  Use ":0tab cmd" to get the new tab page as the
94		first one.
95		Examples: >
96			:tab split	" opens current buffer in new tab page
97			:tab help gt	" opens tab page with help for "gt"
98
99CTRL-W gf	Open a new tab page and edit the file name under the cursor.
100		See |CTRL-W_gf|.
101
102CTRL-W gF	Open a new tab page and edit the file name under the cursor
103		and jump to the line number following the file name.
104		See |CTRL-W_gF|.
105
106CLOSING A TAB PAGE:
107
108Closing the last window of a tab page closes the tab page too, unless there is
109only one tab page.
110
111Using the mouse: If the tab page line is displayed you can click in the "X" at
112the top right to close the current tab page.  A custom |'tabline'| may show
113something else.
114
115							*:tabc* *:tabclose*
116:tabc[lose][!]	Close current tab page.
117		This command fails when:
118		- There is only one tab page on the screen.		*E784*
119		- When 'hidden' is not set, [!] is not used, a buffer has
120		  changes, and there is no other window on this buffer.
121		Changes to the buffer are not written and won't get lost, so
122		this is a "safe" command. >
123		    :tabclose	    " close the current tab page
124
125:{count}tabc[lose][!]
126:tabc[lose][!] {count}
127		Close tab page {count}.  Fails in the same way as `:tabclose`
128		above. >
129		    :-tabclose	    " close the previous tab page
130		    :+tabclose	    " close the next tab page
131		    :1tabclose	    " close the first tab page
132		    :$tabclose	    " close the last tab page
133<
134							*:tabo* *:tabonly*
135:tabo[nly][!]	Close all other tab pages.
136		When the 'hidden' option is set, all buffers in closed windows
137		become hidden.
138		When 'hidden' is not set, and the 'autowrite' option is set,
139		modified buffers are written.  Otherwise, windows that have
140		buffers that are modified are not removed, unless the [!] is
141		given, then they become hidden.  But modified buffers are
142		never abandoned, so changes cannot get lost. >
143		    :tabonly	    " close all tab pages except the current
144
145:{count}tabo[nly][!]
146		Close all tab pages except the {count}th one. >
147		    :.tabonly	    " one
148		    :-tabonly	    " close all tab pages except the previous
149				    " one
150		    :+tabonly	    " close all tab pages except the next one
151		    :1tabonly	    " close all tab pages except the first one
152		    :$tabonly	    " close all tab pages except the last one
153
154
155SWITCHING TO ANOTHER TAB PAGE:
156
157Using the mouse: If the tab page line is displayed you can click in a tab page
158label to switch to that tab page.  Click where there is no label to go to the
159next tab page.  |'tabline'|
160
161:tabn[ext]				*:tabn* *:tabnext* *gt*
162<C-PageDown>				*CTRL-<PageDown>* *<C-PageDown>*
163gt					*i_CTRL-<PageDown>* *i_<C-PageDown>*
164		Go to the next tab page.  Wraps around from the last to the
165		first one.
166
167:tabn[ext] {count}
168{count}<C-PageDown>
169{count}gt	Go to tab page {count}.  The first tab page has number one.
170
171
172:tabp[revious]				*:tabp* *:tabprevious* *gT* *:tabN*
173:tabN[ext]				*:tabNext* *CTRL-<PageUp>*
174<C-PageUp>			 *<C-PageUp>* *i_CTRL-<PageUp>* *i_<C-PageUp>*
175gT		Go to the previous tab page.  Wraps around from the first one
176		to the last one.
177
178:tabp[revious] {count}
179:tabN[ext] {count}
180{count}<C-PageUp>
181{count}gT	Go {count} tab pages back.  Wraps around from the first one
182		to the last one.
183
184:tabr[ewind]			*:tabfir* *:tabfirst* *:tabr* *:tabrewind*
185:tabfir[st]	Go to the first tab page.
186
187							*:tabl* *:tablast*
188:tabl[ast]	Go to the last tab page.
189
190
191Other commands:
192							*:tabs*
193:tabs		List the tab pages and the windows they contain.
194		Shows a ">" for the current window.
195		Shows a "+" for modified buffers.
196
197
198REORDERING TAB PAGES:
199
200:tabm[ove] [N]						*:tabm* *:tabmove*
201:[N]tabm[ove]
202		Move the current tab page to after tab page N.  Use zero to
203		make the current tab page the first one.  Without N the tab
204		page is made the last one. >
205		    :.tabmove	" do nothing
206		    :-tabmove	" move the tab page to the left
207		    :+tabmove	" move the tab page to the right
208		    :0tabmove	" move the tab page to the beginning of the tab
209				" list
210		    :tabmove 0	" as above
211		    :tabmove	" move the tab page to the last
212		    :$tabmove	" as above
213		    :tabmove $	" as above
214
215:tabm[ove] +[N]
216:tabm[ove] -[N]
217		Move the current tab page N places to the right (with +) or to
218		the left (with -). >
219		    :tabmove -	" move the tab page to the left
220		    :tabmove -1	" as above
221		    :tabmove +	" move the tab page to the right
222		    :tabmove +1	" as above
223
224
225Note that although it is possible to move a tab behind the N-th one by using
226:Ntabmove. And move it by N places by using :+Ntabmove. For clarification what
227+N means in this context see |[range]|.
228
229
230LOOPING OVER TAB PAGES:
231
232							*:tabd* *:tabdo*
233:[range]tabd[o] {cmd}
234		Execute {cmd} in each tab page or if [range] is given only in
235		tab pages which tab page number is in the [range].  It works
236		like doing this: >
237			:tabfirst
238			:{cmd}
239			:tabnext
240			:{cmd}
241			etc.
242<		This only operates in the current window of each tab page.
243		When an error is detected on one tab page, further tab pages
244		will not be visited.
245		The last tab page (or where an error occurred) becomes the
246		current tab page.
247		{cmd} can contain '|' to concatenate several commands.
248		{cmd} must not open or close tab pages or reorder them.
249		{not in Vi} {not available when compiled without the
250		|+listcmds| feature}
251		Also see |:windo|, |:argdo|, |:bufdo|, |:cdo|, |:ldo|, |:cfdo|
252		and |:lfdo|
253
254==============================================================================
2553. Other items						*tab-page-other*
256
257							*tabline-menu*
258The GUI tab pages line has a popup menu.  It is accessed with a right click.
259The entries are:
260	Close		Close the tab page under the mouse pointer.  The
261			current one if there is no label under the mouse
262			pointer.
263	New Tab		Open a tab page, editing an empty buffer.  It appears
264			to the left of the mouse pointer.
265	Open Tab...	Like "New Tab" and additionally use a file selector to
266			select a file to edit.
267
268Diff mode works per tab page.  You can see the diffs between several files
269within one tab page.  Other tab pages can show differences between other
270files.
271
272Variables local to a tab page start with "t:". |tabpage-variable|
273
274Currently there is only one option local to a tab page: 'cmdheight'.
275
276The TabLeave and TabEnter autocommand events can be used to do something when
277switching from one tab page to another.  The exact order depends on what you
278are doing.  When creating a new tab page this works as if you create a new
279window on the same buffer and then edit another buffer.  Thus ":tabnew"
280triggers:
281	WinLeave		leave current window
282	TabLeave		leave current tab page
283	WinEnter		enter window in new tab page
284	TabEnter		enter new tab page
285	BufLeave		leave current buffer
286	BufEnter		enter new empty buffer
287
288When switching to another tab page the order is:
289	BufLeave
290	WinLeave
291	TabLeave
292	TabEnter
293	WinEnter
294	BufEnter
295
296==============================================================================
2974. Setting 'tabline'					*setting-tabline*
298
299The 'tabline' option specifies what the line with tab pages labels looks like.
300It is only used when there is no GUI tab line.
301
302You can use the 'showtabline' option to specify when you want the line with
303tab page labels to appear: never, when there is more than one tab page or
304always.
305
306The highlighting of the tab pages line is set with the groups TabLine
307TabLineSel and TabLineFill.  |hl-TabLine| |hl-TabLineSel| |hl-TabLineFill|
308
309A "+" will be shown for a tab page that has a modified window.  The number of
310windows in a tabpage is also shown.  Thus "3+" means three windows and one of
311them has a modified buffer.
312
313The 'tabline' option allows you to define your preferred way to tab pages
314labels.  This isn't easy, thus an example will be given here.
315
316For basics see the 'statusline' option.  The same items can be used in the
317'tabline' option.  Additionally, the |tabpagebuflist()|, |tabpagenr()| and
318|tabpagewinnr()| functions are useful.
319
320Since the number of tab labels will vary, you need to use an expression for
321the whole option.  Something like: >
322	:set tabline=%!MyTabLine()
323
324Then define the MyTabLine() function to list all the tab pages labels.  A
325convenient method is to split it in two parts:  First go over all the tab
326pages and define labels for them.  Then get the label for each tab page. >
327
328	function MyTabLine()
329	  let s = ''
330	  for i in range(tabpagenr('$'))
331	    " select the highlighting
332	    if i + 1 == tabpagenr()
333	      let s .= '%#TabLineSel#'
334	    else
335	      let s .= '%#TabLine#'
336	    endif
337
338	    " set the tab page number (for mouse clicks)
339	    let s .= '%' . (i + 1) . 'T'
340
341	    " the label is made by MyTabLabel()
342	    let s .= ' %{MyTabLabel(' . (i + 1) . ')} '
343	  endfor
344
345	  " after the last tab fill with TabLineFill and reset tab page nr
346	  let s .= '%#TabLineFill#%T'
347
348	  " right-align the label to close the current tab page
349	  if tabpagenr('$') > 1
350	    let s .= '%=%#TabLine#%999Xclose'
351	  endif
352
353	  return s
354	endfunction
355
356Now the MyTabLabel() function is called for each tab page to get its label. >
357
358	function MyTabLabel(n)
359	  let buflist = tabpagebuflist(a:n)
360	  let winnr = tabpagewinnr(a:n)
361	  return bufname(buflist[winnr - 1])
362	endfunction
363
364This is just a simplistic example that results in a tab pages line that
365resembles the default, but without adding a + for a modified buffer or
366truncating the names.  You will want to reduce the width of labels in a
367clever way when there is not enough room.  Check the 'columns' option for the
368space available.
369
370==============================================================================
3715. Setting 'guitablabel'				*setting-guitablabel*
372
373When the GUI tab pages line is displayed, 'guitablabel' can be used to
374specify the label to display for each tab page.  Unlike 'tabline', which
375specifies the whole tab pages line at once, 'guitablabel' is used for each
376label separately.
377
378'guitabtooltip' is very similar and is used for the tooltip of the same label.
379This only appears when the mouse pointer hovers over the label, thus it
380usually is longer.  Only supported on some systems though.
381
382See the 'statusline' option for the format of the value.
383
384The "%N" item can be used for the current tab page number.  The |v:lnum|
385variable is also set to this number when the option is evaluated.
386The items that use a file name refer to the current window of the tab page.
387
388Note that syntax highlighting is not used for the option.  The %T and %X
389items are also ignored.
390
391A simple example that puts the tab page number and the buffer name in the
392label: >
393	:set guitablabel=%N\ %f
394
395An example that resembles the default 'guitablabel': Show the number of
396windows in the tab page and a '+' if there is a modified buffer: >
397
398	function GuiTabLabel()
399	  let label = ''
400	  let bufnrlist = tabpagebuflist(v:lnum)
401
402	  " Add '+' if one of the buffers in the tab page is modified
403	  for bufnr in bufnrlist
404	    if getbufvar(bufnr, "&modified")
405	      let label = '+'
406	      break
407	    endif
408	  endfor
409
410	  " Append the number of windows in the tab page if more than one
411	  let wincount = tabpagewinnr(v:lnum, '$')
412	  if wincount > 1
413	    let label .= wincount
414	  endif
415	  if label != ''
416	    let label .= ' '
417	  endif
418
419	  " Append the buffer name
420	  return label . bufname(bufnrlist[tabpagewinnr(v:lnum) - 1])
421	endfunction
422
423	set guitablabel=%{GuiTabLabel()}
424
425Note that the function must be defined before setting the option, otherwise
426you get an error message for the function not being known.
427
428If you want to fall back to the default label, return an empty string.
429
430If you want to show something specific for a tab page, you might want to use a
431tab page local variable. |t:var|
432
433
434 vim:tw=78:ts=8:ft=help:norl:
435