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At 12:44 PM -0800 3/10/04, Tim Bray wrote: >Er, I thought that canonical XML required that namespace names be >declared only at the first point they're used. Am I wrong? > >If I'm right, it's a big problem; it means you can't have a qname in >an attribute value unless that namespace has already been used in a >containing element or one of its attributes. So I'm probably wrong. You're wrong. :-) Namespaces are output when they first come into scope, not when they're first used. This is covered in section 2.3 of the canonical XML spec. The key thing is to remember that in the XPath data model on which canonical XML is based, the namespace axis contains all namespaces in scope on the element, not simply those declared or used. -- Elliotte Rusty Harold elharo@m... Effective XML (Addison-Wesley, 2003) http://www.cafeconleche.org/books/effectivexml http://www.amazon.com/exec/obidos/ISBN%3D0321150406/ref%3Dnosim/cafeaulaitA
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