Add test for lead non-alpha characters in attribute names.
diff --git a/xmltest.cpp b/xmltest.cpp
index 8a13382..3354471 100644
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -1033,6 +1033,13 @@
 		doc.Parse( xml );

 		XMLTest( "Non-alpha element lead letter parses.", doc.Error(), false );

 	}

+    

+    {

+        const char* xml = "<element _attr1=\"foo\" :attr2=\"bar\"></element>";

+        XMLDocument doc;

+        doc.Parse(xml);

+        XMLTest("Non-alpha attribute lead character parses.", doc.Error(), false);

+    }

 

 	{

 		const char* xml = "<element/>WOA THIS ISN'T GOING TO PARSE";