From 2b786f51a7658353e00131e891f6cb8ff8a694d7 Mon Sep 17 00:00:00 2001
From: Glenn Morris <rgm@gnu.org>
Date: Wed, 13 Jan 2010 22:13:16 -0800
Subject: [PATCH] (show-trailing-whitespace): Safe if boolean.  (Bug#5312)

---
 lisp/ChangeLog | 4 ++++
 lisp/frame.el  | 1 +
 2 files changed, 5 insertions(+)

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index dc6a9f1a19d..29565214cf5 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,7 @@
+2010-01-14  Glenn Morris  <rgm@gnu.org>
+
+	* frame.el (show-trailing-whitespace): Safe if boolean.  (Bug#5312)
+
 2010-01-14  Kenichi Handa  <handa@m17n.org>
 
 	* composite.el (auto-composition-mode): Make it a buffer local
diff --git a/lisp/frame.el b/lisp/frame.el
index e2ae65f1ccc..0628db7ee38 100644
--- a/lisp/frame.el
+++ b/lisp/frame.el
@@ -1525,6 +1525,7 @@ left untouched.  FRAME nil or omitted means use the selected frame."
   "Non-nil means highlight trailing whitespace.
 This is done in the face `trailing-whitespace'."
   :type 'boolean
+  :safe 'booleanp
   :group 'whitespace-faces)
 
 
-- 
2.30.2