Carlo Arenas [off-list ref] writes:

quoted

I don't want to implement language tag parsing here since we don't need
to do that.  I would like to do the simple thing to prevent commonly
used locales that don't represent actual language tags from being
included and not overengineer this design

I think that your design of filtering C and POSIX accomplishes that,
even if it might seem like hardcoding those two values is a little dirty.

Thanks for correcting me regarding language tag length Carlo.

I guess I am fine with filtering out "C" and "POSIX" now. Not perfect,
but I think everyone agrees that we don't want to maintain a database of
language tags just for this.

Collin