bug#59935: 29.0.60; project-list-buffers is slow

[Dmitry Gutov]

On 10/12/2022 13:12, Eli Zaretskii wrote:
> > Date: Sat, 10 Dec 2022 12:47:38 +0200
> > Cc:59935@debbugs.gnu.org,juri@linkov.net
> > From: Dmitry Gutov<dgutov@yandex.ru>
> >
> > > If so, I don't understand why a
> > > trivial change to project-list-buffers could not call project-buffers
> > > just once, and then reuse the value in the call to
> > > list-buffers-noselect both as the BUFFER-LIST argument and (if needed)
> > > in the FILTER-PREDICATE argument, using memq.
> > If we just do that, pressing 'g' will only show the buffers that
> > belonged to the project when project-list-buffers was called. And not
> > necessarily the*current*  list of project buffers.
> >
> > The previously attached patches solved that problem.
> I don't understand: how is 'g' relevant?  You were talking about
> 'C-x p C-b' in your original message.

'C-x p C-b' creates a buffer which lists buffers. It also sets up 
revert-buffer-function in that buffer.

And pressing 'g' in that new buffer should supposedly refresh that list 
of buffers appropriately.