From: dalanicolai <dalanicolai@gmail.com>
To: martin rudalics <rudalics@gmx.at>
Cc: Michael Heerdegen <michael_heerdegen@web.de>, 54438@debbugs.gnu.org
Subject: bug#54438: 27.2; inconsistent-behavior-global-vs-local-hook
Date: Fri, 18 Mar 2022 10:11:29 +0100 [thread overview]
Message-ID: <CACJP=3=VtJGMt6L-C00Nxmebv61519D6j-ofuW0WHZMjBuSMTA@mail.gmail.com> (raw)
In-Reply-To: <161a1515-187d-18c2-f9f1-86f4ea29614c@gmx.at>
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Thank you for the reply. Ah, sorry I forgot to remove the parens to include
the `pop-to-buffer` within the defun.
About the 'restoring mechanism'; the global hook seems not to restore the
window selected before running the hook.
So here are the two separated test cases (they both use the 'pop-up'
function)
(defun pop-up ()
(pop-to-buffer "pop-up"))
(defun test ()
(interactive)
(with-current-buffer (get-buffer-create "test")
(add-hook 'window-configuration-change-hook #'pop-up)
(pop-to-buffer "test")))
;; evaluate code to remove the (global) hook
(remove-hook 'window-configuration-change-hook #'pop-up)
(defun test ()
(interactive)
(with-current-buffer (get-buffer-create "test")
(add-hook 'window-configuration-change-hook #'pop-up nil t)
(pop-to-buffer "test")))
So the 'restoring mechanism' works like you explained for the local hook
but not for the global hook
(where after calling 'test', the pop-up buffer will be selected).
Also, I would expect that a hook just calls the hook function, and it would
not 'restore the window
selected before the hook'. I would say the restoring is undesired behavior.
On Fri, 18 Mar 2022 at 09:37, martin rudalics <rudalics@gmx.at> wrote:
> > I think it's a bad idea to do something that changes the window
> > configuration in `window-configuration-change-hook'. It's not
> > unexpected to get an infinite recursion or any other unpredictable
> > behavior.
>
> People should avoid it in packages because they could easily step on
> each other's toes. Written carefully, it could be useful in private
> code.
>
> martin
>
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next prev parent reply other threads:[~2022-03-18 9:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-17 17:52 bug#54438: 27.2; inconsistent-behavior-global-vs-local-hook dalanicolai
2022-03-18 0:42 ` Michael Heerdegen
2022-03-18 8:37 ` martin rudalics
2022-03-18 9:11 ` dalanicolai [this message]
2022-03-18 9:12 ` dalanicolai
2022-03-18 9:58 ` martin rudalics
2022-03-18 12:14 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-18 17:03 ` dalanicolai
2022-03-18 8:36 ` martin rudalics
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