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   RE: [xml-dev] Illegal Characters in Namespace URIs

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> From: Dare Obasanjo [mailto:dareo@microsoft.com]
> Sent: Monday, June 17, 2002 3:16 AM
> To: Elliotte Rusty Harold; xml-dev@lists.xml.org
> Subject: RE: [xml-dev] Illegal Characters in Namespace URIs
> -----Original Message----- 
> From: Elliotte Rusty Harold [mailto:elharo@metalab.unc.edu] 
> Sent: Sun 6/16/2002 2:44 PM 
> To: xml-dev@lists.xml.org 
> Cc: 
> Subject: Re: [xml-dev] Illegal Characters in Namespace URIs
> >Yes, I read all that. However, document conformance is defined by
> >Section 6 which states:
> >
> >In XML documents which conform to this specification, element types
> >and attribute names must match the production for QName and must
> >satisfy the "Namespace Constraints".
> >
> >That's it. The next couple of paragraphs elaborate this, but do not
> >add any further constraints. Since the URI reference is not part of
> >the BNF grammar or a namespace constraint, it seems possible to claim
> >conformance with non-URI values.
> I looked at the errata for the Names in XML REC at 
> http://www.w3.org/XML/xml-names-19990114-errata and couldn't find 
> anywhere this was clarified so I have to agree with you that the 
> REC seems to imply that XML documents containing non-URI values 
> as values for namespace names are conformant. I assume this is 
> the only reason WebDAV can get away with its non-URI namespace 
> name[0] and still claim conformance. 
> [0] http://lists.oasis-open.org/archives/relax-ng/200111/msg00032.html 

Not so. The reason WebDAV "gets away" with the badly chosen namespace name is the fact that RFC2396+ is going to allow empty scheme-specific parts, making "just the scheme name" a valid URI. At least that's my understanding of the outcome of the discussion.


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