Even an easier test:
1. Open a C file
2. Open another C file in another tab
3. :echo bufwinnr('*.c') -> -1. Wrong.
2013/2/8 Alexey Radkov <[email protected]>
> Hi,
>
> :help bufwinnr says:
>
> "Only deals with the current tab page."
>
> Recently i found that this behaviour is broken if the argument of
> bufwinnr() is regexp pattern and there are more than one tabs open. I found
> that in following experiment:
>
> 1. Open vim with some file.
> 2. Open NERD_tree plugin (its bufname will be 'NERD_tree_1')
> 3. :echo bufname('NERD_tree*') -> 1 (if it's open on the left), good
> 4. Open another file in a new tab.
> 5. Open another NERD_tree in this new tab (its name will be 'NERD_tree_2')
> 6. :echo bufname('NERD_tree*') -> -1 (bad, shoul be 1 because another
> NERD_tree is in another tab!)
> 7. Return to the first tab and do :echo.... again -> -1 (must be 1)
>
>
> The issue is due to f_bufwinnr() in eval.c calls get_buf_tv() which in
> turn calls buflist_findpat(). buflist_findpat() searches through buffers in
> all windows and when it finds more than one matches it returns -2!
> According to the idea of bufwinnr it should check only in buffers that
> bound to the current tab so buflist_findpat() must sort out buffers from
> other tabs. I implemented and attached a small patch that fixes this issue
> for me: this adds extra argument 'curtab_only' in get_buf_tv() and
> buflist_findpat(), the latter function adds a match only if matched buffer
> is bound to the current tab. Though I am not sure that it is clean enough
> (especially when i am adding curtab_only as the last argument to the
> buflist_findpat(), which previous argument marked with macro UNUSED).
>
> Cheers, Alexey.
>
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