bug#37700: 27.0.50; undo mouse-drag-and-drop-region ineffective

[Eli Zaretskii]

> From: martin rudalics <rudalics@gmx.at>
> Date: Fri, 11 Oct 2019 20:26:23 +0200
> Cc: 37700@debbugs.gnu.org
> 
> But I also faintly remember a discussion with the author of
> 'mouse-drag-and-drop-region' on whether it is a good idea to activate
> the mark after dropping - IIRC he did have some argument in favor of
> it.  Maybe it would be easier to add an option for not activating the
> region when dropping than adding one for 'undo'.

Yes, that would be a possible solution, I think, since that command is
quite new.