(xscheme-control-g-synchronization-p): Doc fix.

[gnu-emacs] / lisp / rot13.el

diff --git a/lisp/rot13.el b/lisp/rot13.el
index 9e3c21f73c263aa334bdc77ddd97661b58d77683..9c83132070777dbb2fde9047af46e15b623ef09f 100644 (file)
--- a/lisp/rot13.el
+++ b/lisp/rot13.el
@@ -46,11 +46,21 @@
 
 ;;;###autoload
 (defun rot13-other-window ()
-  "Display current buffer in rot 13 in another window."
+  "Display current buffer in rot 13 in another window.
+To terminate the rot13 display, delete that window."
   (interactive)
   (let ((w (display-buffer (current-buffer) t)))
     (set-window-display-table w rot13-display-table)))
 
+;;;###autoload
+(defun toggle-rot13-mode ()
+  "Toggle the use of rot 13 encoding for the current window."
+  (interactive)
+  (if (eq (window-display-table (selected-window)) rot13-display-table)
+      (set-window-display-table (selected-window) nil)
+    (if (null (window-display-table (selected-window)))
+       (set-window-display-table (selected-window) rot13-display-table))))
+
 (provide 'rot13)
 
 ;;; rot13.el ends here