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bug#32839: 27.0.50; recenter doesn't redisplay

From: Juri Linkov
Subject: bug#32839: 27.0.50; recenter doesn't redisplay
Date: Tue, 09 Oct 2018 01:56:12 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (x86_64-pc-linux-gnu)

>> The only hope to fix these problems and to close this report is to call
>> the new hook window-state-change-functions at the very end when the
>> redisplay is completely finished
> "Redisplay is completely finished" is not well defined.  Especially
> since some (most?) hooks only care about a specific window, whereas
> redisplay considers more than one window.

I found another case when window-size-change-functions is not called:
it's when invoking winner-undo that restores a previous
window-configuration and where the same window has different
window sizes in prev/next window-configurations.

Perhaps this problem will be fixed by window-state-change-functions that
Martin is currently implementing.

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