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Re: Error in HTML 5 Validator

From: Michael[tm] Smith <mike@w3.org>
Date: Sat, 6 Aug 2011 21:36:54 +0900
To: David Dorward <david@dorward.me.uk>
Cc: Mole Note <info@molenote.com>, www-validator@w3.org
Message-ID: <20110806123654.GI6530@sideshowbarker>
David Dorward <david@dorward.me.uk>, 2011-07-08 15:12 +0100:

> On 7 Jul 2011, at 06:12, Mole Note wrote:
> > 	•  Line 341, Column 42: Element name g:plusone cannot be represented as XML 1.0.
> This error message sounds like a bug.

It's not an error, it's a warning. And it's emitted because the content is
being served as HTML instead of with an XML MIME type, and HTML parsers
don't know anything about namespaces -- to put it in XML terms, every
element name is a local name -- and so in HTML, the literal name of that
element is "g:plusone". And that name can't be represented in XML because
XML doesn't allow colons in the local names. So the spirit of the warning
is to say, In case you ever want to serve this content as XML instead of
HTML, you have an element name in it that's not allowed in XML.


Michael[tm] Smith
Received on Saturday, 6 August 2011 12:37:02 UTC

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