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W3C Validator and namespaces

From: Simone Onofri <simone.onofri@gmail.com>
Date: Mon, 23 Apr 2007 18:47:52 +0200
Message-ID: <52bd7c3d0704230947q6784d05ax7900dddc8d2bf77b@mail.gmail.com>
To: RDFa <public-rdf-in-xhtml-tf@w3.org>

Dear TF,

Following the question about validation on this telecon [1] I've
searched under the W3C archive to gain an answer. So on an old message
by Masayasu Ishikawa [2]:


DTD-based validation and namespaces are not really compatible.
If you really want to perform DTD-based validation, whatever
namespaces you want to add, you have to declare necessary
elements and attributes appropriately in the internal or
external DTD subset, including the xmlns attribute.

If your REALLY have to do so, you might want to look at
"Modularization of XHTML", at:


Otherwise, you'd better consider schema-based validation or
live with "well-formed but not valid" for now.


Can we contact validator-team if there are news about this? And if
problem is fixed? So we may also consider the test [2] version of
validator [3]. These links and for validation of one our TC.

Regards and have a fine day,


[1]  http://lists.w3.org/Archives/Public/www-validator/2002Jan/0088.html
[2] http://validator-test.w3.org/check?uri=http%3A%2F%2Fwww.w3.org%2F2006%2F07%2FSWD%2FRDFa%2Ftestsuite%2Fxhtml1-testcases%2F0001
[3] http://validator.w3.org/check?uri=http://www.w3.org/2006/07/SWD/RDFa/testsuite/xhtml1-testcases/0001
[3] http://validator-tet
Received on Monday, 23 April 2007 16:47:56 UTC

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