Re: master 4eb7db5: Mouse rectangular region selection (bug#38013)
[ Please don't take the below personally. ]
> +(defun mouse-drag-region-rectangle (start-event)
> + "Set the region to the rectangle that the mouse is dragged over.
> +This must be bound to a button-down mouse event."
> + (interactive "e")
Yuck! We *really* need to abstract that gunk into its own function so
we don't keep copying it between the various `FOO-drag-region` functions.