[whatwg] Using the HTML5 DOCTYPE as a new quirksmode switch

Simon Pieters zcorpan at gmail.com
Tue Mar 13 09:10:21 PDT 2007

On Tue, 13 Mar 2007 17:04:39 +0100, Colin Lieberman <colin at fontshop.com>  

> I'm not sure how this is a backwards compatibility issue. My  
> understanding is that user agents aren't actually parsing information  
> from the doctype, just checking for its existence. The only applications  
> that should break are validators, which would need to be updated anyway.
> I ran some quick (and highly unscientific tests) on ff1.5 and ie7 (both  
> pc) with a real html 4 doctype, <!DOCTYPE html>, and <!DOCTYPE html5>  
> (both with and without a space before the 5), and nothing broke in terms  
> of rendering or function.
> Please let me know if there's something I'm missing here.

You're missing something. http://annevankesteren.nl/2005/07/html5-doctype

Simon Pieters

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