GNU bug report logs - #32672
27.0.50; image resize on window resizing

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From: Juri Linkov <juri <at> linkov.net>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 32672 <at> debbugs.gnu.org
Subject: bug#32672: 27.0.50; image resize on window resizing
Date: Sat, 27 Oct 2018 22:38:37 +0300

[Message part 1 (text/plain, inline)]

>> Your proposed window-state-change-functions would match window-state-get
>> very well, e.g. it could call the hook with an argument containing alist
>> of values that really changed, where elements of the alist could have
>> the same keys as in alist returned from window-state-get,
>
> Retaining the nomenclature of 'window-state-get' is part of the plan.
> But I'm not sure whether we want to retain all of what is recorded in
> a window state.
>
>> for example:
>>
>>    (add-hook 'window-state-change-functions (lambda (window alist) ...) nil t)
>>
>> where 'alist' could have such keys and values of changes:
>>
>>    (buffer "*scratch*") - means the buffer was switched in the window
>
> (buffer . #<buffer *scratch*>) rather

Here is a complete implementation that works well when tested
on display-buffer-directionally in bug#32790 (it doesn't handle
window-point because then the hook is called too often):

[window-state-change-functions.1.el (application/emacs-lisp, inline)]

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