(cond ((eq type 'kill)
(delete-active-region t))
((eq type 'yank)
- ;; Before a yank command,
- ;; make sure we don't yank the same region
- ;; that we are going to delete.
- ;; That would make yank a no-op.
- (when (string= (buffer-substring-no-properties (point) (mark))
- (car kill-ring))
+ ;; Before a yank command, make sure we don't yank the
+ ;; head of the kill-ring that really comes from the
+ ;; currently active region we are going to delete
+ ;; (when last-command is one that uses copy-region-as-kill
+ ;; or kill-new). That would make yank a no-op.
+ (when (and (string= (buffer-substring-no-properties (point) (mark))
+ (car kill-ring))
+ (memq last-command
+ '(mouse-set-region mouse-drag-region
+ mouse-save-then-kill mouse-secondary-save-then-kill)))
(current-kill 1))
(delete-active-region))
((eq type 'supersede)