[whatwg] The problems with namespaces in text/html

[Elliotte Harold]

Henri Sivonen wrote:

> A conforming HTML5 byte stream is *never* a well-formed XML 1.0 byte 
> stream. 

Really? Never? There are many HTML 4 documents that are well-formed XML 
documents? Are these not legal HTML 5 documents? I scanned the spec 
quickly, but I didn't find anything that was flat out forbidden by XML. 
Is there some variant of the XML declaration or a DOCTYPE or requirement 
for an unclosed start-tag that would automatically make all HTML 5 
documents malformed XML?

-- 
Elliotte Rusty Harold  elharo at metalab.unc.edu
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