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   What can validate XHTML1.1 ? [was XML is easy]

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From: "Jonathan Borden" <jborden@mediaone.net>
> How many validators can validate XHTML 1.1?
> MSXML bags it because it doesn't accept defaulted xmlns attributes -- and
> since validation is all XML 1.0, I can't see why that should have bearing
> validation.

I tried validating the example from the XHTML1.1 rec [1].:-

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" >
    <title>Virtual Library</title>
    <p>Moved to <a href="http://vlib.org/";>vlib.org</a>.</p>

Our XML Validator (xmlvalid) [2] validated the document without complaint.
RXP [3] was successful (except for some warnings about redefinitions of

These were the only two I tried, so perhaps the state of XML 1.0 validation
isn't so bad after all?

By the way, validating this document involves a fair amount of external
entity fetching (try xmlvalid --verbose for a laugh), so I wouldn't
recommend doing it regularly without a local copy of the DTD and an OASIS
XML Catalog [4] !


Rob Lugt
ElCel Technology

[1] http://www.w3.org/TR/xhtml11
[2] http://www.elcel.com/products/xmlvalid.html
[3] http://www.ltg.ed.ac.uk/~richard/rxp.html
[4] http://www.oasis-open.org/committees/entity/


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