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Re: Distributed Extensibility

From: Dan Connolly <connolly@w3.org>
Date: Mon, 13 Aug 2007 11:45:37 -0500
To: Sam Ruby <rubys@us.ibm.com>
Cc: public-html@w3.org
Message-Id: <1187023537.29837.51.camel@pav>

On Mon, 2007-08-13 at 12:37 -0400, Sam Ruby wrote:
> Dan Connolly wrote:
> > On Thu, 2007-08-02 at 11:16 -0400, Sam Ruby wrote:
> >> Original here:
> >> http://intertwingly.net/blog/2007/08/02/HTML5-and-Distributed-Extensibility
> >>
> > [...]
> >> XML permits an alternate syntax, namely default namespaces.  In certain 
> >> circles, such a syntax is very popular.  Regrettably, allowing such a 
> >> syntax would pose problems for back level user agents, and therefore 
> >> must be disallowed in the HTML5 “custom format”.
> > 
> > I'm not familiar with those problems. I'd like more details;
> > maybe even test cases.
> 
> Testcase:
> 
> http://intertwingly.net/stories/2007/08/13/testcase.html
> 
> View it both in IE and in a browser that supports XHTML and SVG. 
> Compare the title bars.

ah... I see... the document sets the default namespace to SVG
and then includes a <title> element, but in HTML as she are
spoke, that title is taken as an HTML title.

Thanks.

> Now imagine if I had used the script element:
> 
> http://www.w3.org/TR/SVG11/script.html
> 
> I believe that for backwards compatibility we need to ensure that not 
> only doesn't any extension use a local-name that may have previously 
> been used, but also doesn't use any local-name that may every be used in 
> potential future revisions of HTML.
> 
> - Sam Ruby
-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
Received on Monday, 13 August 2007 16:59:07 UTC

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