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bug#33458: 27.0.50; dired loses position when reverted from outside plac

From: Juri Linkov
Subject: bug#33458: 27.0.50; dired loses position when reverted from outside place
Date: Fri, 21 Dec 2018 02:59:31 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (x86_64-pc-linux-gnu)

>> Is it really possible to get a window from the window-configuration
>> that is currently not displayed and change its window-point, e.g.
>> to get window reference from the buffer-local list, select with
>> with-selected-window and call set-window-point?  I never tried such thing.
> The window object is fully available, just its buffer (aka contents)
> slot is nil.  We cannot select it and setting any geometry related
> things might cause problems.  But I see no problems changing its point
> or its buffer (the latter being temporarily in the combination_limit
> slot).  So the problem is not how to get the window from the
> configuration but how to get the configuration in the first place.

I have a related question: before killing a buffer I want to check
if that buffer is still used in a saved window-configuration/state,
i.e. it could be restored later and displayed after restoring from the
window configuration/state.  Do you know is such thing possible at all?

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