--- utils.rb.orig	2010-08-10 16:30:52.203112000 -0700
+++ utils.rb	2010-08-10 16:31:08.276685000 -0700
@@ -135,7 +135,7 @@
       "'" => "'",
       '"' => """,
     }
-    ESCAPE_HTML_PATTERN = Regexp.union(ESCAPE_HTML.keys)
+    ESCAPE_HTML_PATTERN = Regexp.union(*ESCAPE_HTML.keys)
 
     # Escape ampersands, brackets and quotes to their HTML/XML entities.
     def escape_html(string)