Re: How to stop buffer number incrementing when writing to a temp file?

[Justin M. Keyes]

On Wed, Apr 1, 2015 at 10:23 AM,  b...@airbladesoftware.com wrote:
 Hello!

 I started this thread on vim_dev[1] and it was suggested I continue here 
 instead.

 I fail to understand, why this is a problem, but you should be able to work 
 around that using the writefile() function, which seems to be better suited 
 for such a case.

 Over the course of a day that VimL runs hundreds or thousands of times, and 
 when I only work on a dozen files it seems...inefficient that the buffer 
 number is up in the hundreds or higher.  It doesn't break anything but it's 
 an unwanted side-effect.

Isn't your use case mentioned in vim_dev, a perfect application of
tabs? Tabs have very predictable and stable numbering. It could be
argued that tabs exist in part to serve the use case you mention.

Buffers, in contrast, are the fundamental userland data structure in
Vim (and Emacs), so it is important that identity for a given buffer
is unique for the entire session.

For example, in the fugitive.vim plugin, the Glog command fills the
quicklist with buffer entries, and this will quickly increment your
buffer number to the hundreds or thousands. Instead of fighting this,
I say embrace it.

P.S. In the future I hope to see buffers made even more flexible and
useful in Vim, like Emacs...

Justin M. Keyes

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Re: How to stop buffer number incrementing when writing to a temp file?

[stillLearningVim]

Hi Andy,

I'm not a vim expert, but it looks like we don't have a way to keep the buffer 
number from increasing. I haven't used vim's scratch buffer before, but maybe 
you can use that for editing a temp file.

From: http://vim.wikia.com/wiki/Vim_buffer_FAQ

Is it possible to configure Vim, by setting some option, to re-use the number 
of a deleted buffer for a new buffer?

No. Vim will not re-use the buffer number of a deleted buffer for a new buffer. 
Vim will always assign the next sequential number for a new buffer. The buffer 
number assignment is implemented this way, so that you can always jump to a 
buffer using the same buffer number. One method to achieve buffer number 
reordering is to restart Vim. If you restart Vim, it will re-assign numbers 
sequentially to all the buffers in the buffer list (assuming you have properly 
set 'viminfo' to save and restore the buffer list across Vim sessions).



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