GNU bug report logs - #9609
Excessive transient region highlighting with highlight-nonselected-windows

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Message #13 received at 9609 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: rgm <at> gnu.org, 9609 <at> debbugs.gnu.org
Subject: Re: bug#9609: Excessive transient region highlighting with
 highlight-nonselected-windows
Date: Wed, 02 Jun 2021 15:43:25 +0300

> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Date: Wed, 02 Jun 2021 09:48:05 +0200
> Cc: 9609 <at> debbugs.gnu.org
> 
> Glenn Morris <rgm <at> gnu.org> writes:
> 
> > emacs -Q --eval '(progn (setq highlight-nonselected-windows t) (transient-mark-mode -1))' -f make-frame
> >
> > Two frames open showing the *scratch* buffer, once frame has focus.
> >
> > With the mouse, click on the "n" of "notes" in the focused frame. Do
> > not release the mouse. In the other frame, a region starting or ending
> > at "n" is now selected.
> 
> I can confirm that this is still present in Emacs 28.
> 
> Pretty weird behaviour.

Probably we decided that the mouse was dragged because the coordinates
in the other window are different.  Or something like that.

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