Script codes in RFC 3066

[Jeremy Carroll]

Caoimhin O Donnaile wrote:

>>>Given that the two would often be used in concert I think there would be a
>>>strong advantage in making any script code look quite different to any
>>>language code, whether to a computer or a human reader.
>>>
>>So they do.  Script codes are 4-letter strings, conventionally titlecased.
>>
> 
> Are 3-letter codes going to be enough to cover all languages, 


26*26*26 = 17576
26*36*36 = 33696

i.e. 3 letter codes looks pretty tight to me for your objective.
however, allowing numbers in positions 2 and 3 doubles the space.

Also there may be codes nobody wants to use: FUK for example.
(That's probably a language already, knowing my luck).

Language codes could be of odd length, leaving the even lengths for other 
things.

Jeremy