i18n-ISSUE-484: Use BCP47 instead of ISO 639-1 for identifying languages

[r12a]

http://www.w3.org/Mail/flatten/index?subject=i18n-ISSUE-484&list=public-automotive

Raised by:Steven Atkin
Opened on:2015-08-19

8.2 Language Configuration Interface
http://www.w3.org/TR/2015/WD-vehicle-data-20150616/#attributes-49

BCP47 should be used to identify languages instead of ISO 639-1.
See https://tools.ietf.org/html/bcp47

One of the problems with using ISO 639-1 2 letter codes is that it does not adequately address the handling of Chinese. For example, in ISO 639-1 Chinese is represented as zh. This code cannot indicate whether the writing system is Simplified Chinese or Traditional Chinese. The BCP47 standard clearly indicates which writing system is in use. In this case if Simplified Chinese was being used the code would be zh-Hans and for Traditional Chinese it would be zh-Hant.

[r12a]

Closing because the document was published as a deprecated WG Note in Jun 2018. Leaving a recycle label in place in case this comes up again, since it indicates that the issue wasn't addressed.