lisp/net/eww.el (eww-update-header-line-format): Quote % characters

2 files changed, 10 insertions, 3 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index fcc2c2ae382..f258f37f1d6 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,7 @@
+2013-06-21  Lars Magne Ingebrigtsen  <larsi@gnus.org>
+
+        * net/eww.el (eww-update-header-line-format): Quote % characters.
+
 2013-06-21  Glenn Morris  <rgm@gnu.org>
 
         * play/cookie1.el (cookie): New custom group.
diff --git a/lisp/net/eww.el b/lisp/net/eww.el
index b09d8732afb..ad19758b4a6 100644
--- a/lisp/net/eww.el
+++ b/lisp/net/eww.el
@@ -230,9 +230,12 @@
 
 (defun eww-update-header-line-format ()
   (if eww-header-line-format
-      (setq header-line-format (format-spec eww-header-line-format
-                                            `((?u . ,eww-current-url)
-                                              (?t . ,eww-current-title))))
+      (setq header-line-format
+            (replace-regexp-in-string
+             "%" "%%"
+             (format-spec eww-header-line-format
+                          `((?u . ,eww-current-url)
+                            (?t . ,eww-current-title)))))
     (setq header-line-format nil)))
 
 (defun eww-tag-title (cont)