Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/eduni/namespaces/1.0/046.xml
<?xml version="1.0"?> <!-- Colon in ID attribute name --> <!DOCTYPE foo [ <!ELEMENT foo ANY> <!ATTLIST foo id ID #IMPLIED ref IDREF #IMPLIED> ]> <foo ref="a:b"> <foo id="a:b"/> </foo>
