<!-- http://www.w3.org/TR/xmldsig2ed-tests/#c14n11xmlbase-prop-6 Check that implementations of [XML-C14N1.1] properly build the xml:base in one element that originally had no xml:base attribute. --> <XPath xmlns:ietf="http://www.ietf.org" > (//. | //@* | //namespace::*) [ancestor-or-self::ietf:e3] </XPath>