Stricter check for string value in savehist-printable

Fixes: debbugs:10937

2 files changed, 8 insertions, 1 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index e21cf0b6bba..3edff65044a 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2012-03-09  Leo Liu  <sdl.web@gmail.com>
+
+        * savehist.el (savehist-printable): Stricter check for string
+        value (Bug#10937).
+
 2012-03-09  Eli Zaretskii  <eliz@gnu.org>
 
         * mail/smtpmail.el (smtpmail-send-it): Bind
diff --git a/lisp/savehist.el b/lisp/savehist.el
index c1515fa48ce..a65906a1676 100644
--- a/lisp/savehist.el
+++ b/lisp/savehist.el
@@ -369,9 +369,11 @@ trimming of history lists to `history-length' items."
   "Return non-nil if VALUE is printable."
   (cond
    ;; Quick response for oft-encountered types known to be printable.
-   ((stringp value))
    ((numberp value))
    ((symbolp value))
+   ;; String without properties
+   ((and (stringp value)
+         (equal-including-properties value (substring-no-properties value))))
    (t
     ;; For others, check explicitly.
     (with-temp-buffer