Re: [ELPA] Brief v5.90: neighboring window merge on deletion

[Eli Zaretskii]

> Date: Tue, 26 Mar 2024 10:57:23 +0100
> Cc: Juri Linkov <juri@linkov.net>, Emacs developers <emacs-devel@gnu.org>
> From: martin rudalics <rudalics@gmx.at>
> 
>  > However, as an `emulation' mode, we usually can only expect it to be `as
>  > close as possible' to the emulated target application.  After added the
>  > `overlay' and full window state save/restoration it's quite close, but
>  > of course it's best if I have a way to do it better -- a way to
>  > `recycle', `reuse' or even `restore' the deleted window ID like
>  > `winner-mode' does.
> 
> IIUC handling overlays with a 'window' property with current means is
> much too cumbersome.  One would have to investigate all overlays in the
> window's buffer and duplicate them if they have a 'window' property that
> references the cloned window.  In practice, most overlays don't have
> such a property.

But crucially, the overlay that implements region highlighting does.