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#58839
29.0.50; project-kill-buffer fails when Eglot is running
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Dmitry Gutov <dgutov <at> yandex.ru> writes:
> Anyway, if we do decide to flip the switch, it should be through
> project-kill-buffer-conditions, so the user can make a different
> choice through customization.
project-kill-buffer-conditions doesn't work, I've tried it, it has this
fundamental-mode thing there that makes it impossible. Supposedly it is
there to serve some purpose that no-one seems to be able to find a
argumentative basis for.
It's quite clear that _some_ non-file-visiting buffers can be considered
as belonging to a project's working set. But it's very very easy to
come up with many that cannot be considered so.
Because "killing buffers" is a destructive operation, being greedy here
is a really bad design decision, as it catches an arbitrary number of
unsuspecting extensions off-guard, which have been using earmuffed
buffers for many years.
All in all, it's like you're making a gun that only backfires 5% of the
time.
In the little time I've used this feature since the start of this
discussion I have discovered it backfires no small number of occasions:
Eglot, CIDER, *scratch*, *ielm*, *sly-scratch*, *Completions*,... Heck
even *ibuffer* itself is targeted by this.
Project-kill-buffers is off. Its intention pretty useful, but its
implementation is a blunder. The root cause is this overgreedy
project-buffers. When "killing a project" the echo area asks me if I
want to kill a number of buffers that I didn't even know I had, because
of hidden buffers. This cannot be logical and the only way the
"argument can be made both ways" is out of stubborness.
JSONRPC's buffers are hidden implementation details: the argument that
they are somehow under the responsibility of project.el just because it
can see them through (buffer-list) is blind tiranny.
The mini-languages invented in project-kill-buffers-conditions and
project-ignore-buffer-conditions are abominations. If project-buffers
just been conservatively designed, we'd need nothing more than the
existing hooks for the exceptions. *earmuffed* buffers interested in
opting in could declare if it belonged or not in one line. Just like
diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
index dc3ed52650..718bebc7cd 100644
--- a/lisp/vc/vc-dispatcher.el
+++ b/lisp/vc/vc-dispatcher.el
@@ -179,6 +179,7 @@ vc-setup-buffer
(let ((camefrom (current-buffer))
(olddir default-directory))
(set-buffer (get-buffer-create buf))
+ (setq-local project-owned t)
(let ((oldproc (get-buffer-process (current-buffer))))
;; If we wanted to wait for oldproc to finish before doing
;; something, we'd have used vc-eval-after.
To name one. The above is just the converse of the solution proposed by
Philip before.
Anyway, I've now suggested and presented 2 actually tested, actually
working patches to project.el. I don't have anything more to add.
João
This bug report was last modified 2 years and 280 days ago.
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