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

[martin rudalics]

>    ;; This [buff]er is fo
>    ;; To cr[eate] a file,
>
> When I grab a rectangle as shown above, I cannot move the rectangle by
> 1 char to the left, because of usage of `rectangle-intersect-p'.
> Behavior on moving up, right, and left seems good.

Please tell us more precisely what you tried to do.  With

(setq mouse-drag-and-drop-region 'shift)

dragging the rectangle by one "character to the left" and dropping it
with the shift key pressed gets me

;; Thisbuff buffer is for text that is not saved, and for Lisp evaluation.
;; To ceatereate a file, visit it with C-x C-f and enter text in its buffer.

martin