Index: questiontype.php
===================================================================
RCS file: /cvsroot/moodle/moodle/question/type/questiontype.php,v
retrieving revision 1.74.2.31
diff -u -r1.74.2.31 questiontype.php
--- questiontype.php	23 Feb 2010 14:31:09 -0000	1.74.2.31
+++ questiontype.php	10 Jul 2010 21:38:23 -0000
@@ -1769,7 +1769,14 @@
         array_shift($extraquestionfields);
         $expout='';
         foreach ($extraquestionfields as $field) {
-            $expout .= "    <$field>{$question->options->$field}</$field>\n";
+             $exportedvalue=$question->options->$field;
+             if (!empty($exportedvalue) && htmlspecialchars($exportedvalue)!=$exportedvalue) {
+                $exportedvalue = '<![CDATA['.$exportedvalue.']]>';
+             }
+             if (strpos($exportedvalue,'\'')!=false) {
+                $exportedvalue = '<text>'.$exportedvalue.'</text>';
+             }
+            $expout .= "    <$field>{$exportedvalue}</$field>\n";
         }
 
         $extraasnwersfields = $this->extra_answer_fields();