"Andrew Gray" <andrew.gray@dunelm.org.uk> wrote

> XXwiki or XXXwiki will always refer to the XX or XXX language
> Wikipedia using standard ISO 639-1 or 639-2 codes; there are a couple
> of exceptions, such as simplewiki, but anything with two or three
> characters should be reliable.

Replace ISO 639-2 above with ISO 639-3.

We are not using ISO 639-2 codes any more (unless they coincide with ISO 639-3 ones, which happens, but not always)

Exceptions from the ISO 639-1 or 639-3 rule can be found at:

http://meta.wikimedia.org/wiki/List_of_Wikipedias#Nonstandard_language_codes

There are 6 of 14 ones which could be easily avoided as of today, mostly since new language codes have been added to the ISO 639-3 list. Few more will likely or certaily follow, but 3 or 4 codes could remain that will not as easily be done away with.

Purodha