Anton Lindqvist wrote:
> > > Hi,
> > > This patch adds an optional second argument to the bufwinnr function
> > > which if present returns all windows associated with the given buffer
> > > across all tabs. This is useful in order to determine if a buffer is
> > > present in several windows. I'm currently using this patch in order to
> > > get backspace to behave accordingly: if the current buffer is present in
> > > other windows than the current one, close the window, otherwise wipe the
> > > current buffer.
> > >
> > > nnoremap <BS> :call BufferClose()<CR>
> > > func BufferClose()
> > > if len(bufwinnr('%', 1)) > 1
> > > wincmd c
> > > else
> > > bwipe
> > > endif
> > > endfunc
> > >
> > > I didn't end up using the FOR_ALL_TAB_WINDOWS macro since I needed to
> > > reset winnr and increment tabnr in the outer loop.
> >
> > Thanks. Seems useful.
> >
> > I have been thinking of adding a unique window number. Some plugins
> > have problems finding the right window after splitting and closing
> > windows. The current window number changes then, thus it requires
> > looping over windows to find the right window. Netrw had a bug related
> > to this.
> >
> > getwinid() ID of current winow
> > getwinnr({id}) window nr of {id} or -1 if not open
> > gettabnr({id}) tab page nr of {id} or -1 if not open
> > gotowin({id})
> >
> > I wonder how this bufwinnr() change fits in.
>
> With the addition of the unique window IDs the returned tabnr and winnr
> from bufwinnr() can be used to retrieve the window ID using the new
> win_getid() function. Once the window ID is obtain all the new functions
> can be utilized.
Looking at this again, I realize that when adding the argument the
return type changes from a number to a list. I know that Vim is not
fixing the return type, but changing the return type based on an
argument can cause problems. I think we should go in the direction of a
predictable return type. I know, it's already violated by several
existing functions. But perhaps it's worth going in that direction.
After all, Vim script keeps getting more complicated, we should at least
try to make it a bit simpler when we can.
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