diff -r 3dcb46ae6185 -r 6cc9a0cbaf55 src/Pure/Thy/html.scala
--- a/src/Pure/Thy/html.scala	Sat Dec 19 16:02:26 2009 +0100
+++ b/src/Pure/Thy/html.scala	Sat Dec 19 16:51:32 2009 +0100
@@ -49,7 +49,7 @@
           flush()
           ts + elem
         }
-        val syms = Symbol.elements(txt)
+        val syms = Symbol.elements(txt).map(_.toString)
         while (syms.hasNext) {
           val s1 = syms.next
           def s2() = if (syms.hasNext) syms.next else ""