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}.

I don't blame them making that decision, though since xs:redefine modifies
components rather than creating  new components, it's stretching a point.

Michael Kay
http://www.saxonica.com/