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[Bug 12073] Permit restricted use of <?xml version="1.0" encoding="UTF-8" ?>

From: <bugzilla@jessica.w3.org>
Date: Tue, 15 Feb 2011 07:23:20 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1PpFFo-00013k-RR@jessica.w3.org>

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

           What    |Removed                     |Added
             Status|RESOLVED                    |REOPENED
                 CC|                            |xn--mlform-iua@xn--mlform-i
                   |                            |ua.no
         Resolution|WONTFIX                     |

--- Comment #2 from Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no> 2011-02-15 07:23:20 UTC ---
(In reply to comment #1)

Just to clarify: when I said that

]] HTML5 should permit the XML declaration as conforming or conforming but
obsolete [[

then I meant "inside the text/html syntax".  I did not intend - at all or in
any way - to state anything about what should be possibe or allowed inside the
XML syntax.

Status today is that the RFC for the 'text/html' MIME type says that XHTML 1.0
defines a profile which is compatible with HTML. This profile is, as we know,
defined by the infamous Appendix C. And Appendix C does not forbid the XML
declaration - it instead sounds more as if it recommend it. This is my basis
for sahying that HTML5 could define some variants of it as "obsolete but

I see this as similar to how HTML5 defines the XHTML1.0 strict DOCTYPE as
OBSOLETE but conforming: despite that it is a XHTML doctype, HTML5 states that
it is obsolete bt conforming text/html. (Obsoleteness is usually a state that
is "awarded" to things that once was conforming.)
Another simiarlity is that other XHTML1 doctypes are considered non-conforming.

I thus suggest a similar status, based on a similar evaluation, for the XML
declaration: certain uses of it should be conforming.

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Received on Tuesday, 15 February 2011 07:23:22 UTC

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