RelaxNG validation with XInclude / File association report DOCTYPE error

[angelozerr]

Given :

• foo.rng:

<grammar xmlns="http://relaxng.org/ns/structure/1.0"
	datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"
	xmlns:xi="http://www.w3.org/2001/XInclude">
	<start>
		<ref name="foo" />
	</start>
	<define name="foo">
		<element name="foo">
			<element name="bar">
				<attribute name="xml:base" />
			</element>
		</element>
	</define>
</grammar>

• bar.xml:

<bar></bar>

• foo.xml

<foo xmlns:xi="http://www.w3.org/2001/XInclude">
	<xi:include href="bar.xml" />
</foo>

with :

• XInclude enabled
• foo.xml associate with foo.rng file association

The is an error with DOCTYPE:

Although it should have no error.