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Re: HTML5 lang attribute problem

From: Jukka K. Korpela <jkorpela@cs.tut.fi>
Date: Sat, 27 Apr 2013 22:27:32 +0300
Message-ID: <517C26A4.6010504@cs.tut.fi>
To: Mar When <pub1080fullhd@yahoo.in>
CC: www-validator@w3.org
2013-04-27 13:09, Mar When wrote:

> I'm getting the following error when using lang="arz" (for egyptian
> arabic):
> "Bad value arz for attribute lang on element html: The language subtag
> arz is not a valid ISO language part of a language tag."
> The language-Code "arz" is defined in ISO 639-3 and it's prefered to use
> it according to RFC 5646
> (http://tools.ietf.org/html/rfc5646#section-4.1.2).

So it seems. BCP 47 has become increasingly theoretical. Given that in 
most contexts, language declared in HTML has no effect and typically has 
an effect for a handful of world languages only when there is an effect, 
the added complexity is pointless and disturbing.

But HTML5 CR cites BCP 47 generically, so this pseudo-standard for HTML 
defined the lang attribute as taking whatever values BCP 47 might allow. 
It’s no wonder that validators don’t catch up.

http://validator.nu seems to accept "arz", but http://validator.w3.org 
and http://validator.w3.org/nu/ do not.

On the practical side, using lang="ar-EG" has better chances of having 
some effect. The effect is mostly none, however.

Received on Saturday, 27 April 2013 19:28:02 UTC

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