RE: [ubl] Issue: two-letter or three-letter language codes?

["Rendon, Zarella" <zrendon@ptc.com>]

No reason I can think of to use one over the other. The xml:lang
definition references RFC 4646, which does not promote using one over
the other, but does state that the separation of the language code from
the country code must use a dash.

Please note that most language codes are represented in lower case,
although technically they are not case sensitive.

So, "requiring" the use of two characters (upper or lower) is wrong. 

Zarella

-----Original Message-----
From: Jon Bosak [mailto:bosak@pinax.com] 
Sent: Thursday, March 10, 2011 9:41 AM
To: UBL TC; ubl-dev
Subject: [ubl] Issue: two-letter or three-letter language codes?

Hello UBL TC and developers,

A question has arisen with regard to language codes.  It appears that
UN/CEFACT uses the ISO three-letter lowercase language codes, whereas
UBL currently includes a list of ISO two-letter uppercase language codes
(both are ISO standards as far as we know).  We're not going to be
inclined to change something in 2.1 that already shipped in 2.0, so the
question is: does anyone know of a good reason why UBL should switch to
the three-letter lowercase form?

We need to have this issue resolved by next week, so if anyone has an
opinion, please let us know ASAP.

Jon

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