I support a 3-letter code in ISO 639-2, identical to that in ISO 639-3.
I do _not_ support a 2-letter code in ISO 639-1.
> lang_in_eng = Angika
> lang_in_fre = angika
> The language is included in DIS 639-3 with identifier "anp" (which is also
> the proposed identifier).
> In Linguasphere the item is identified as "59-AAF-sj".
> An alpha-2 identifier is also proposed, however "an" is not available. Is
> there evidence to support inclusion in alpha-2 table?