(tags-table-mode): Disable undo.

lisp/ChangeLog

@@ -3,6 +3,8 @@
 	* newcomment.el (comment-indent): Let comment-insert-comment-function,
 	if defined, do all the work of inserting a new comment.
 
+	* progmodes/etags.el (tags-table-mode): Disable undo.
+
 	* simple.el (bad-packages-alist): Revert previous change.
 
 2007-11-02  Dan Nicolaescu  <dann@ics.uci.edu>

lisp/progmodes/etags.el

@@ -277,8 +277,9 @@ One argument, the tag info returned by `snarf-tag-function'.")
 (defun tags-table-mode ()
   "Major mode for tags table file buffers."
   (interactive)
-  (setq major-mode 'tags-table-mode)
-  (setq mode-name "Tags Table")
+  (setq major-mode 'tags-table-mode
+        mode-name "Tags Table"
+         buffer-undo-list t)
   (initialize-new-tags-table))
 
 ;;;###autoload