--- code/trunk/pcrecpp.h	2009/03/17 21:30:30	392
+++ code/trunk/pcrecpp.h	2010/01/02 16:30:46	474
@@ -674,6 +674,7 @@
   int TryMatch(const StringPiece& text,
                int startpos,
                Anchor anchor,
+               bool empty_ok,
                int *vec,
                int vecsize) const;