BenArmston (talk | contribs) No edit summary |
BenArmston (talk | contribs) No edit summary |
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Most buffer navigation commands, such as :bnext and :bprevious, skip unlisted |
Most buffer navigation commands, such as :bnext and :bprevious, skip unlisted |
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| − | buffers. Which can prove frustrating when |
+ | buffers. Which can prove frustrating when buffers have been opened to view |
| − | + | directory listings. Consider the below example. |
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<pre> |
<pre> |
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The problem gets worse with several levels of directory navigation. |
The problem gets worse with several levels of directory navigation. |
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| − | The simplest solution for this |
+ | The simplest solution for this are the following two mappings: |
<pre> |
<pre> |
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</pre> |
</pre> |
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| − | This maps <C-n> to switch to the buffer |
+ | This maps <C-n> to switch to the buffer which has a buffer number one higher |
| − | the buffer number of the active buffer. Whilst <C-p> cycles in the |
+ | than the buffer number of the active buffer. Whilst <C-p> cycles in the |
| − | direction. |
+ | opposite direction. |
However, this does not always work, because there might be holes in the buffer |
However, this does not always work, because there might be holes in the buffer |
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numbers. E.g. right now my buffer list contains buffer numbers 1, 2, 6, 9, 10 |
numbers. E.g. right now my buffer list contains buffer numbers 1, 2, 6, 9, 10 |
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| − | and 14. Using the above map from buffer #6, would produce the error |
+ | and 14. Using the above map for <C-n> from buffer #6, would produce the error |
| − | "E86: Buffer 7 does not exist". |
+ | message "E86: Buffer 7 does not exist". |
A solution is to write a function searching for the next buffer with |
A solution is to write a function searching for the next buffer with |
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Revision as of 23:25, 7 July 2008
created February 10, 2005 · complexity basic · author Anon · version 6.0
This tip provides a means to cycle through all of your buffers (including :help unlisted-buffer buffers such as directory listings):
Most buffer navigation commands, such as :bnext and :bprevious, skip unlisted buffers. Which can prove frustrating when buffers have been opened to view directory listings. Consider the below example.
gvim ~ /etc/motd
gvim goes to dir ~
:bn
gvim goes to /etc/motd
:bp
but will not go back to ~, because it is unlisted.
:ls!
~ is there in list of the buffers 1,2
:buf 1
have to give it the buffer number to find it.
The problem gets worse with several levels of directory navigation.
The simplest solution for this are the following two mappings:
:map <C-n> :exe ":buf ".((bufnr("%") % bufnr("$"))+1)<CR>
:map <C-p> :exe ":buf ".((bufnr("%") % bufnr("$"))-1)<CR>
This maps <C-n> to switch to the buffer which has a buffer number one higher than the buffer number of the active buffer. Whilst <C-p> cycles in the opposite direction.
However, this does not always work, because there might be holes in the buffer numbers. E.g. right now my buffer list contains buffer numbers 1, 2, 6, 9, 10 and 14. Using the above map for <C-n> from buffer #6, would produce the error message "E86: Buffer 7 does not exist".
A solution is to write a function searching for the next buffer with bufexists().
function! SwitchToNextBuffer(incr)
let s:last = bufnr("$")
let s:new = bufnr("%") + a:incr
while s:new < 1 || !bufexists(s:new)
let s:new = s:new + a:incr
if s:new < 1
let s:new = s:last
elseif s:new > s:last
let s:new = 1
endif
endwhile
exe ":buf ".s:new
endfunction
nnoremap <silent> <C-N> :call SwitchToNextBuffer(1)<CR>
nnoremap <silent> <C-P> :call SwitchToNextBuffer(-1)<CR>