Subject: 27.0.50; undo mouse-drag-and-drop-region ineffective
From: Mattias Engdegård <[email-masked]>
To: [email-masked]
Date: Fri, 11 Oct 2019 13:51:38 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Undoing mouse-drag-and-drop-region doesn't work:

1. (setq mouse-drag-and-drop-region t)
2. mark a region
3. use the mouse to drag the region elsewhere
4. Undo (twice)

Result: the dragged text disappears from its destination, but does not reappear where it was dragged from.
Instead, we get the "No further undo information for region" error.

The action can be undone by moving point and backing up a different undo branch a few steps, but that is hardly ideal.