Merge from emacs--devo--0

[bpt/emacs.git] / lisp / emulation / cua-base.el

diff --git a/lisp/emulation/cua-base.el b/lisp/emulation/cua-base.el
index e458c5d..337be13 100644 (file)
--- a/lisp/emulation/cua-base.el
+++ b/lisp/emulation/cua-base.el
@@ -10,7 +10,7 @@
 
 ;; GNU Emacs is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
 ;; any later version.
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
@@ -898,9 +898,6 @@ If global mark is active, copy from register or one character."
      (t
       ;; Must save register here, since delete may override reg 0.
       (if mark-active
-         ;; 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.
          (if cua--rectangle
              (progn
                (goto-char (min (mark) (point)))
@@ -908,8 +905,16 @@ If global mark is active, copy from register or one character."
                (setq paste-lines (cua--delete-rectangle))
                (if (= paste-lines 1)
                    (setq paste-lines nil))) ;; paste all
-           (if (string= (filter-buffer-substring (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.
+           (if (and (string= (filter-buffer-substring (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))
            (cua-delete-region)))
       (cond