W3C home > Mailing lists > Public > www-validator@w3.org > June 2011

Re: Bad value language for attribute name on element meta: Keyword language is not registered.

From: Jukka K. Korpela <jkorpela@cs.tut.fi>
Date: Fri, 03 Jun 2011 16:03:42 +0300
Message-ID: <4DE8DBAE.9000802@cs.tut.fi>
To: www-validator@w3.org, w.doeringer@fh-worms.de
3.6.2011 14:27, w.doeringer wrote:

 > The above error message

That is, "Bad value language for attribute name on element meta: Keyword 
language is not registered." (The text of a message should not refer to 
the Subject line or imply it.)

 > conflicts with the WAI-checker that REQUIRES a
 > <meta name="language" ...> to be present!

You didn't specify what you mean by "WAI-checker", but generally, 
various checkers are heuristic, sometimes misleading, occasionally even 
plain wrong. Don't expect them to be consistent with each other.

 > 
http://www.fh-worms.de/~progbau/Vorlesungen/SWE/JavaScript/10/kontakt/kontakt.html

The page triggers the experimental "HTML5" mode of the W3C Markup 
Validator, and in this mode, it's really a heuristic checker rather than 
a formal validator. Conflicts are surely possible.

In this case, it is apparently the unspecified WAI checker that has a 
problem. I don't think any WAI recommendation requires or even suggests 
the use of <meta name="language" ...>. Rather, they suggest lang and/or 
xml:lang attributes, see
http://www.w3.org/WAI/WCAG20/quickref/#qr-meaning-doc-lang-id

The HTML5 draft is, for good and bad, somewhat "open". So if you really 
wish to have <meta name="language" ...> allowed in HTML5, you can 
register it at http://wiki.whatwg.org/wiki/MetaExtensions and see what 
happens. I don't think you should do that, though. Such a construct 
would be pointless and ignored by relevant software, as there are 
already standardized methods for specifying the human language of the 
contents.

-- 
Yucca, http://www.cs.tut.fi/~jkorpela/
Received on Friday, 3 June 2011 13:04:11 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Friday, 3 June 2011 13:04:20 GMT