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Re: Distributed Extensibility

From: Sam Ruby <rubys@us.ibm.com>
Date: Mon, 13 Aug 2007 12:37:15 -0400
Message-ID: <46C088BB.7040001@us.ibm.com>
To: Dan Connolly <connolly@w3.org>
CC: public-html@w3.org

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.

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
Received on Monday, 13 August 2007 16:37:30 UTC

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