<!-- http://www.w3.org/TR/xmldsig2ed-tests/#c14n11xmlbase-prop-7 Check that implementations of [XML-C14N1.1] do not pass the xml:base to another element when it is not necessary. --> <XPath xmlns:ietf="http://www.ietf.org" > (//. | //@* | //namespace::*) [ancestor-or-self::ietf:c14n11XmlBaseDoc1 and not(ancestor-or-self::ietf:e1 or ancestor-or-self::ietf:e2)] </XPath>