1  <?xml version="1.0"?>
 2  <XPath xmlns:bar="http://example.org/bar" xmlns:baz="http://example.org/baz" xmlns:foo="http://example.org/foo" xml:lang="en-ie">
 3      (//. | //@* | //namespace::*) 
 4      [ 
 5                <!-- only text, elements, or directly-used namespace nodes but not foo:Something -->
 6                ancestor-or-self::bar:Something  and
 7                not (self::foo:Something)  and
 8                (self::text()  or
 9                 (namespace-uri() != "")  or
10                 (string(self::node()) = namespace-uri(parent::node())))
11      ]
12  </XPath>