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Re: HTML5 differences from HTML4 editor's draft (XHTML5 and XHTML2)

From: Maciej Stachowiak <mjs@apple.com>
Date: Fri, 15 Jun 2007 13:58:12 -0700
Message-Id: <E1B67BD4-C0A6-40B4-ADC6-E79CD4146B9F@apple.com>
Cc: HTML WG <public-html@w3.org>, public-xhtml2@w3.org
To: Jirka Kosek <jirka@kosek.cz>

XHTML5 needs to use the same namespace as XHTML 1.0 to maintain  
compatibility. Since XHTML2 doesn't have compatibility as a goal, I  
don't see why they need or want to reuse the namespace. But if they  
want to use the same namespace as XHTML5 it probably does not matter,  
since it's unlikely any implementation will be supporting both at once.


On Jun 15, 2007, at 12:47 PM, Jirka Kosek wrote:

> Jirka Kosek wrote:
>> At the same time it will be confusing to use XHTML5 when XHTML2 will
>> break evolution path:
>> XHTML1.0/1.1 is in http://www.w3.org/1999/xhtml namespace
>> XHTML2 is currently in http://www.w3.org/2002/06/xhtml2/ namespace  
>> and
>> it is not backward compatible with XHTML1.0/1.1
>> XHTML5 is in http://www.w3.org/1999/xhtml namespace and it is more or
>> less compatible with XHTML1.0/1.1
> It seems that XHTML2 WG changed their mind and they plan to use
> http://www.w3.org/1999/xhtml namespace for XHTML2, see:
> http://lists.w3.org/Archives/Public/public-xhtml2/2007Jun/0014.html
> "Just to clarify; we do not believe that XHTML2 is terribly different
> from XHTML 1.1.  And it does not use a different namespace." --  
> Shane P.
> McCarron
> http://www.w3.org/2006/08/30-html-minutes.html#action06
> "ACTION: Shane update xhtml2 text on namespaces to make it clear  
> that we
> are planning to try to re-use the xhtml1 namespace."
> Well, I don't think that having two languages (HTML5 and XHTML2)  
> with a
> different semantics and element sets in the same namespace makes  
> sense.
> This is real issue which should be resolved quickly. Or will be there
> toss between HTML and XHTML WGs on right to use this namespace?
> If the namespaces will be the same then we definitively should use
> something like <html version="5.0"> to be able to differentiate  
> between
> XHTML2 and XML serialization of HTML5.
> Jirka
> I'm CC'ing this message also to a public XHTML2 mailing list.
> -- 
> ------------------------------------------------------------------
>   Jirka Kosek      e-mail: jirka@kosek.cz      http://xmlguru.cz
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Received on Friday, 15 June 2007 20:58:40 UTC

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