[whatwg] Language codes: RFC 3066 versus RFC 4646

[Alex Bishop]

In several places in HTML5 (specifically, sections 3.3.3.3, 4.2.5.3 and 
5.11.1), the specification states that certain attribute values must be 
valid RFC 3066 language codes.

However, RFC 3066 was replaced by RFC 4646 (and RFC 4647) in September 2006.
Is there a reason that HTML5 refers to the older standard or is this 
just an oversight?

Alex

--
Alex Bishop
alexbis...@gmail.com