From 49c23b705bf6f6819b290df0a88afe5091205e66 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Wed, 10 Oct 2007 20:19:44 +0000
Subject: (debugger-setup-buffer): Disable undo in *Backtrace*.

---
 lisp/emacs-lisp/debug.el | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lisp/emacs-lisp/debug.el')

diff --git a/lisp/emacs-lisp/debug.el b/lisp/emacs-lisp/debug.el
index 2dea1d0a347..39cb8dce1ff 100644
--- a/lisp/emacs-lisp/debug.el
+++ b/lisp/emacs-lisp/debug.el
@@ -269,6 +269,7 @@ That buffer should be current already."
   (setq buffer-read-only nil)
   (erase-buffer)
   (set-buffer-multibyte nil)
+  (setq buffer-undo-list t)
   (let ((standard-output (current-buffer))
 	(print-escape-newlines t)
 	(print-level 8)
-- 
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