--- code/trunk/testdata/testinput1	2009/03/03 16:08:23	381
+++ code/trunk/testdata/testinput1	2009/03/20 11:22:42	395
@@ -4061,4 +4061,7 @@
 /(?(?=.*b).*b|^d)/
     abc
 
+/^%((?(?=[a])[^%])|b)*%$/
+    %ab%
+
 / End of testinput1 /