[xml] Can't validate XML Schema which uses the HTML XSD

["Timothy S. Nelson" <wayland smartchat net au>]

	Hi all.  I'm trying to embed a subset of HTML in my XML documents in 
such a way that it can be validated with XML Schema.  I have the following two 
files (simplified, but still shows the error I'm getting):

Test.xml:
------------------------------------------------------------
<?xml version="1.0"?>
<Test xmlns="Test.xsd">
        <div  xmlns="http://www.w3.org/1999/xhtml";>
        </div>
</Test>
------------------------------------------------------------

Test.xsd:
------------------------------------------------------------
<xsd:schema
        xmlns:xsd="http://www.w3.org/2001/XMLSchema";
        xmlns:jz="Test.xsd"
        xmlns:html="http://www.w3.org/1999/xhtml";
        targetNamespace="Test.xsd"
        elementFormDefault="qualified"
>

<xsd:import namespace="http://www.w3.org/1999/xhtml";
        schemaLocation="http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd"/>

<xsd:element name="Test" type="jz:TTest"/>

<xsd:complexType name="TSection"/>

<xsd:complexType name="TTest">
        <xsd:complexContent>
                <xsd:extension base="jz:TSection">
                        <xsd:sequence>
                                <xsd:element ref="html:div"/>
                        </xsd:sequence>
                </xsd:extension>
        </xsd:complexContent>
</xsd:complexType>

</xsd:schema>
------------------------------------------------------------

        When I run them through xmllint, I get an error that says:
------------------------------------------------------------
Test.xsd:19: element element: Schemas parser error : Element 
'{http://www.w3.org/2001/XMLSchema}element', attribute 'ref': The QName value 
'{http://www.w3.org/1999/xhtml}div' does not resolve to a(n) element 
declaration.
------------------------------------------------------------

	My understanding was that this was supposed to work.  I can see three 
possibilities here:
1.      I've messed up somewhere
2.      libxml2 or xmllint doesn't allow for this
3.      The xhtml11.xsd set of files are messed up somewhere

	I suspect them in that order.  Can anyone confirm which it is (and if 
it's me, pointers to additional relevant information or suggested changes 
would be nice).

        :)


---------------------------------------------------------------------
| Name: Tim Nelson                 | Because the Creator is,        |
| E-mail: wayland smartchat net au | I am                           |
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