Re: Both extending and restricting with <redefine>

 > I can't see a rule in Schema that bans <xs:redefine> containing two
 > redefinitions of the same component, but there's also no statement saying
 > what the effect should be.

Xerces complains pointing to
http://www.w3.org/TR/xmlschema-1/#sch-props-correct
2 Each of the {type definitions}, {element declarations}, {attribute 
group definitions}, {model group definitions} and {notation 
declarations} must not contain two or more schema components with the 
same {name} and {target namespace}.

Best Regards,
George
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George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
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