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   RE: [xml-dev] Canonicalizer that uses XML Schemas (rather than DTDs)?

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Elliotte Rusty Harold wrote:

>> Why would it matter that a canonicalizer tool utilize an
>> XML Schema rather than a DTD?  Where would it make a difference?

>Such a canonicalizer would be nonconformant to the XML canonicalization 

Is it not time to update the XML canonicalization specification?  When
everyone was using DTDs then canonicalization of just {XML, DTD} pairs made
sense.  But now that many people are using XML Schemas it seems to me that
canonicalization needs to be upgraded to support {XML, XML-Schema} pairs.

Better yet, the canonicalization specification should be upgraded to handle
all 5 Validation Languages:

1. DTD
2. XML Schemas
3. RelaxNG
4. Schematron

That is, the canonical form of {XML, VL) should be the same (where VL = any
of the 5 Validation Languages listed above):

   {XML, VL} --------------> Canonical XML

Comments?  /Roger


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