From: Ami Fischman <ami@fischman.org>
To: "emacs-devel@gnu.org" <emacs-devel@gnu.org>
Subject: display-buffer vs. current-buffer vs. post-command-hook
Date: Tue, 04 Oct 2016 09:28:23 +0000 [thread overview]
Message-ID: <CAGKqTXUt5o8AY_KN=8QC+fc43dNLHRM4fj3W5fvzXtV53++ufQ@mail.gmail.com> (raw)
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current-buffer returns a stale value immediately after display-buffer
returns.
The following snippet (saved in x.el), when loaded in 25.1.1 using
[google-emacs -Q -l x.el], generates the message:
*scratch* *scratch* *Help*
demonstrating that (current-buffer) has a stale value after describe-key
returns (I expect post to match the [run-at-time 0] value, not the pre
value).
(progn
(setq display-buffer-alist '(("." (lambda (buffer alist)
(switch-to-buffer buffer)))))
(setq pre (current-buffer))
(describe-key (kbd "SPC"))
(setq post (current-buffer))
(run-at-time 0 nil (lambda () (message "%s %s %s" pre post
(current-buffer)))))
This is an extremely reduced test case that reproduces the problem that is
causing https://github.com/mina86/auto-dim-other-buffers.el/issues/10
(AFAICT).
Cheers,
-a
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next reply other threads:[~2016-10-04 9:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-04 9:28 Ami Fischman [this message]
2016-10-04 12:00 ` display-buffer vs. current-buffer vs. post-command-hook Stefan Monnier
2016-10-04 14:52 ` martin rudalics
2016-10-04 15:45 ` Ami Fischman
2016-10-04 15:49 ` Ami Fischman
2016-10-04 16:07 ` martin rudalics
2016-10-04 20:03 ` Ami Fischman
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