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Re: [xml-dev] Element equivalence under XML Namespaces

ok, I like that explanation.

Bryan Rasmussen

On Jan 17, 2008 5:39 PM, Richard Tobin <richard@inf.ed.ac.uk> wrote:
> In article <017201c85925$95d70d60$6501a8c0@turtle> you write:
> >The XML specification does not actually say what processors should do when
> >they encounter a name that is "reserved for standardization", but the
> >consensus is that it is not an error to use such a name and therefore they
> >should at most give a warning.
> The Namespaces spec is a bit more explicit about this.  For prefixes
> beginning "xml" is says:
>    * users SHOULD NOT use them except as defined by later specifications
>    * processors MUST NOT treat them as fatal errors.
> There's always the risk that a processor might ignore something that a
> newer specification has declared that it should interpret, but the
> idea is to ensure that low-level components don't reject documents
> because they contain new features that a higher-level component will
> be able to interpret.
> An XML 1.0 processor that rejected xmlns attributes because they were
> reserved would not have been usable with a namespace processing layer,
> and a namespace-aware processor that rejected xml:id attributes would
> not have been usable with an xml:id layer.
> -- Richard
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