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Re: Use cases

From: Henri Sivonen <hsivonen@iki.fi>
Date: Wed, 5 Jan 2011 13:09:26 +0200
Message-Id: <8A547407-20DD-479D-B663-FCB107C75CFA@iki.fi>
To: public-html-xml@w3.org
On Jan 4, 2011, at 19:54, Kurt Cagle wrote:

> Wasn't one of the key conditions on the HTML5/XHTML5 split the fact that XHTML5 would be supported anywhere HTML5 would be? I may be wrong on this, this was just my impression.

The HTML5 spec doesn't require user agents that support HTML5 to also support XHTML5 or vice versa. However, even without such a requirement, browsers are supporting both: IE9 is adding XHTML support without the HTML5 spec coupling HTML5 and XHTML5 UAs into one conformance class and other browsers supported both HTML and XHTML before the HTML5 spec was written.

OTOH, if a vendor of an HTML-only tool or an XHTML-only tool doesn't see enough demand for supporting the other flavor to justify the engineering increment, I think strong words in the spec requiring HTML5 and XHTML5 to be supported together wouldn't make the vendor implement both.

> I'm trying to think of any use case where this scenario would hold true.

I'll leave responding to this bit to Norm.

-- 
Henri Sivonen
hsivonen@iki.fi
http://hsivonen.iki.fi/
Received on Wednesday, 5 January 2011 11:15:14 GMT

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