Subject: Re: bug#19003: 24.4; Mouse-click in different frame displaying same buffer breaks region

From: Stefan Monnier <[email-masked]>
Date: Mon, 10 Nov 2014 17:55:03 -0500

> A buffer is displayed in two frames, a region was
> selected with the mouse in one of the frames.

> The problem
> =============

> If one clicks (mouse-1) into the other frame, the region is silently
> extended to that point — although it isn't highlighted anymore.

Actually, the region is extended as soon as you select the other frame
(if you have a window-manager that lets focus follow the mouse, then
you see it immediately).

So the problem is that this "switch-frame" should probably deactivate
the mark (if the region was set via shifted-movement).

        Stefan