bug#31240: 26.1; mouse-save-then-kill does not kill rectangles

[martin rudalics]

> At the moment, my current proposal is: allow the user to drag the
> rectangle anywhere to the left (on the same line, or on a different
> line), or anywhere else where it would not intersect with itself (I'm
> attaching a new patch that allows this).

Thanks.  The following case looks a bit problematic here.  Suppose my
rectangle in an Elisp buffer is

;;;;;;;;;;;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;;;;;;;;;;;;;;

If I now drag it up by one line and four columns to the right (so that
it just does not intersect with itself) I get

;;;;;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;RECT;;;;;;;;;
;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;

which is somehow counterintuitive.  Any ideas?

Thanks, martin