xml-dev - Re: wd-xml-names: resolve the element name in the scope of its contain

[james anderson <James.Anderson@mecomnet.de>]

Tim Bray wrote:
> 
> At 05:00 PM 8/11/98 -0400, John Cowan wrote:
> 
> [interpreting james anderson]
> 
> >Here's my take on it.  Suppose you have the fragment:
> >
> >       <foo:a>This is <b>mixed</b>content</foo:a>
> >
> >where "foo" is not a previously declared prefix.  One must then consult

Even if a declaration has appeared, what is the processor to do were (given
the present definitions for declaration scope) the "intended" element was
associated with an attribute declaration which included a default value for
the respective attribute?

> >the DTD to see whether the element declaration for "foo:a" contains
> >a default (or fixed) value for the "xmlns:foo" attribute.  If not,
> >a namespace constraint has been violated.
> 
> You go on to raise the issue in greater detail, but it is clearly
> the case that the rules have to be spelt out.  For example, it's
> obvious to me that for a non-validating parser, if he hits <foo:a>
> and hasn't seen an xmlns:foo= in his encestry, the situation is
> broken.  Should the spec mandate that in this case, a conforming
> program has to go and fetch any and all external parts of the
> DTD to make sure there isn't a default declaration?  Good question.
> I think the answer has to be "no", thus putting the onus on the author
> either to (a) use a validating processor or
> (b) have standalone="true".

How is the validating processor to do this unless either

a, it elevates the prefixes to global status, 

or 

b, it has a means is to determine the corresponding universal names for
qualified names in the DTD?

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