Re: CTRL-]/CTRL-T to detect existing windows/buffers when switching to/from tags

On Sep 6, 3:35 am, David Chanters <david.chant...@googlemail.com>
wrote:
> Hi,
>
> [Please CC me...]
>
> I'm wondering if anyone has any tips for how to efficiently jump
> between tags in Vim?  I'll outline my scenario.
>
> At the moment, pressing CTRL-] on a function definition works great,
> and vim will jump to that tag, switching to a new file in the same
> window if need be.  What I'm after is trying to find out if Vim can
> instead detect if a window displaying a buffer with that tag in it is
> open and to switch focus to that instead?
>
> For example:  If I have a split window which looks like this:
>
> +----------------------+
>  |               |             |
>  |      1       |     2      |
>  |    fileA    |   fileB   |
> +----------------------+
>
> And I am in window 2.  If selecting a tag with CTRL-] meant jumping to
> a definition resulted in fileA in window1, I'd want Vim to switch the
> focus to window 1 instead and jump to the correct tag, rather than Vim
> currently opening fileA in window2.
>
> Likewise, going back the other way instead, pressing CTRL-T should put
> me back in window2, in this example.
>
> If this is possible, it might be nice to consider whether the CTRL-]
> can also detect files open in other *tabs* and switch to any windows
> in that.
>
> TIA!

Of course this can be achieved:

nnoremap! <Ctrl-]> :call <SID>SmartTagSearch()<CR>

function! s:SmartTagSearch()
if {file opened in current tab}
" switch to that window
" locate the tag
else
normal! <C-]>
endif
endfunction

Brief steps implementing s:SmartTagSearch() :

1. expand() to get the word under the cursor(tag name)

2. taglist() to get the target file name of the tag

3. tabpagebuflist() + bufname() to see if that file is opened in the
current tab, if so the window number is determined

4. :exe + :normal ^W^W to switch to that window

5. use the {cmd} got in 1. to locate the tag

Taking all tab pages into account is no problem either, just introduce
tabpagenr() and :gt

<Ctrl-t> is just the other way round.

This should work, theoretically. But I haven't tried it.

Plus: what does the "CC" mean?

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