1 <?xml version="1.0"?>

     2 <!-- Namespace equality test: use of character reference -->

     3 <!DOCTYPE foo [

     4 <!ELEMENT foo ANY>

     5 <!ATTLIST foo xmlns:a CDATA #IMPLIED

     6               xmlns:b CDATA #IMPLIED

     7               xmlns:c CDATA #IMPLIED>

     8 <!ELEMENT bar ANY>

     9 <!ATTLIST bar a:attr CDATA #IMPLIED

    10               b:attr CDATA #IMPLIED

    11               c:attr CDATA #IMPLIED>

    12 ]>

    13 <foo xmlns:a="http://example.org/~wilbur"

    14      xmlns:b="http://example.org/~wilbur">

    15 

    16 <bar a:attr="1" b:attr="2"/>

    17 

    18 </foo>

    19