(top-level): Deactivate clipboard-kill-region and

clipboard-yank when the buffer is read-only.

1 files changed, 6 insertions, 3 deletions

diff --git a/lisp/menu-bar.el b/lisp/menu-bar.el
index c05a4e66a9a..ca20f6182fc 100644
--- a/lisp/menu-bar.el
+++ b/lisp/menu-bar.el
@@ -504,11 +504,14 @@ A large number or nil slows down menu responsiveness."
 ;; These are alternative definitions for the cut, paste and copy
 ;; menu items.  Use them if your system expects these to use the clipboard.
 
-(put 'clipboard-kill-region 'menu-enable 'mark-active)
+(put 'clipboard-kill-region 'menu-enable
+     '(and mark-active (not buffer-read-only)))
 (put 'clipboard-kill-ring-save 'menu-enable 'mark-active)
 (put 'clipboard-yank 'menu-enable
-     '(or (and (fboundp 'x-selection-exists-p) (x-selection-exists-p))
-          (x-selection-exists-p 'CLIPBOARD)))
+     '(and (or (and (fboundp 'x-selection-exists-p)
+                    (x-selection-exists-p))
+               (x-selection-exists-p 'CLIPBOARD))
+           (not buffer-read-only)))
 
 (defun clipboard-yank ()
   "Insert the clipboard contents, or the last stretch of killed text."