Re: ISSUE-126 (HTML5+RDFa conformance): Can use of xmlns: be reported as an error for HTML5+RDFa 1.1? [RDFa 1.1 in HTML5]

As far as I know (and this is also Mike's argument), HTML5 explicitly disallows xmlns: and RDFa+HTML5 is an extension of the core HTML5. This means that the usage of xmlns: in there is an error. Ie, my answer to the question is: yes.

Ivan

----
Ivan Herman
Tel:+31 641044153
http://www.ivan-herman.net



On 19 Jan 2012, at 06:12, RDF Web Applications Working Group Issue Tracker <sysbot+tracker@w3.org> wrote:

> 
> ISSUE-126 (HTML5+RDFa conformance): Can use of xmlns: be reported as an error for HTML5+RDFa 1.1? [RDFa 1.1 in HTML5]
> 
> http://www.w3.org/2010/02/rdfa/track/issues/126
> 
> Raised by: Manu Sporny
> On product: RDFa 1.1 in HTML5
> 
> This issue was raised by Michael(tm) Smith:
> 
> He was working on the new validator code for W3C and said that getting xmlns: support into the HTML5 validator was going to be a fairly large undertaking. Additionally, we're the only ones that override the HTML5 spec to add xmlns: support, even though we have deprecated it's usage. Mike would like to see the following text:
> 
> "Conformance checkers must accept attribute names that have a case insensitive prefix matching "xmlns:" as conforming. Conformance checkers should generate warnings noting that the use of xmlns: is deprecated."
> 
> to this (for HTML5+RDFa):
> 
> "Conformance checkers may report the use of xmlns: as an error."
> 
> 
>