Re: ":b {bufname}" tab-completion uses whole filepath

On Fr, 14 Jun 2024, Enan Ajmain wrote:

> I use ':b' quite often.  And I use a substring of the bufname to jump to
> that buffer.  Works quite well.
> 
> But a problem is that the substring I provide isn't only matched with
> the buffer names but also the filenames.  See these examples:
> 
>     :ls
>       1 #h   "example\predict.py"           line 25
>       2  a   "deeplog\deeplog.py"           line 0
>       4 %a   "example\train.py"             line 37
>     :b deep<tab>
> 
> Then when I type ":b deep<tab>", the matches shown are:
> 
>     E:\projects\log-parsing\deeplog\example\predict.py
>     deeplog\deeplog.py
>     E:\projects\log-parsing\deeplog\example\train.py
> 
> We can see that vim is matching the filepaths instead of only the buffer
> names.  Can I change this behavior?  Preferably with vimscripting, but
> I'm willing to change source code too since I use this too often.
> 
> To be clear: I want only this match to be shown:
> 
>     deeplog\deeplog.py

You could try the following mapping:

:cnoremap <expr> B getcmdtype()==#':'&&getcmdpos()==1?'b */':'B'

And then type :B which would expand to :b */ on the commandline and then 
whatever you type would be anchored to the directory separator.

Thanks,
Christian
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