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[Bug 17710] Polyglot Markup: Remove XML validity completely

From: <bugzilla@jessica.w3.org>
Date: Tue, 10 Jul 2012 14:21:47 +0000
Message-Id: <E1SobJz-0007k1-Rj@jessica.w3.org>
To: public-html-bugzilla@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=17710

Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xn--mlform-iua@xn--mlform-i
                   |                            |ua.no
            Summary|Polyglot Markup: Make XML   |Polyglot Markup: Remove XML
                   |validity a principle.       |validity completely

--- Comment #2 from Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no> 2012-07-10 14:21:47 UTC ---
(In reply to comment #1)

> <!DOCTYPE html>
  [ ... ] 
> It is not accurate to say that this DOCTYPE adds no constraints, it
> is more accurate to say that it declares no elements, so any use of 
> any element is invalid.

He, he ... good point. Yeah, in that case then there should be no point in
focusing on the casing of the  'html' string inside <!DOCTYPE html> since, if
the validating XML parser does not whine about the DOCTYPE, in will - anyhow -
whine about undeclared elements ...

> This is why it is important only to depend on XML well-formedness and not XML
> validity when defining polyglot documents.

Yeah, it shows that the DOCTYPE is only for HTML compatibility - and not for
XML compatibility … 

> You are correct however that the requirement that "html" be in lowercase is on
> consistent with the stated aims as it is neither required for the document to
> be XML well formed nor for it to be conforming HTML5. I suggest this
> requirement be dropped. (your ALT 2)

Yes, that seems like the right conclusion then.  I changed the title of the
bug, accordingly.

Btw, are you 100% that there is no trouble for someone with an XML toolchain if
the casing of the 'html' string of the DOCTYPE is 'wrong'?

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Received on Tuesday, 10 July 2012 14:21:59 GMT

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