bug#58839: [Patch] Re: bug#58839: 29.0.50; project-kill-buffer fails when Eglot is running

[Dmitry Gutov]

On 28.10.2022 21:20, Philip Kaludercic wrote:
> Dmitry Gutov<dgutov@yandex.ru>  writes:
>
> > On 28.10.2022 20:28, Philip Kaludercic wrote:
> > > I still don't agree that this is the right interpretation of the issue
> > > or solution, but wouldn't it be better to add this to
> > > `project-kill-buffer-conditions'?
> > I don't mind a new variable specifically, but
> > kill-buffer-query-functions seems to serve this purpose just fine.
> >
> > And no extra "coupling between two packages" will be added.
> How would you imagine it being used in this case?

(defun eglot-before-kill-special ()
  (eglot-shutdown)
  t)

;; somewhere inside that special buffer's setup:
(add-hook 'kill-buffer-query-functions #'eglot-before-kill-special nil t)

Or use kill-buffer-hook, no need to watch the return value then.

In either case, it will also cover the scenario of the user killing the 
background buffer some other way.