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Ronald Bourret wrote:
> I think this does raise a legitimate problem though, and that is that
> moving namespaces into 1.1 formalizes the problems between DTDs and
> namespaces. One solution is to continue to live with the problem. A
> better solution is to allow namespace "declarations" in DTDs via the
> mechanism proposed recently by Rick Jelliffe  and implemented a years
> ago by Microsoft.
> The good news is that this solution is already known to work. The bad
> news is that it would cause backwards-incompatibility problems --
> documents that are both valid and namespace valid would cease to be
> valid due to a lack of xmlns attribute defaults in the DTD.
in order to avoid this problem it is necessary to implement a more
complete inference mechanism than that suggested by  and implemented
by microsoft. where one performs constriant propagation in the type
domain  one can incorporate the declarations in the document entity
and "retrofit" existing dtd's.
> -- Ron
>  http://lists.xml.org/archives/xml-dev/200201/msg02012.html