Re: gettext locale environment variable documentation

[Karl Berry]

    It's an important principle in Unix internationalization that the
    list of locales is extensible.

I'm glad to hear it.  I never guessed that, reading the description of
the codes being assigned from ISO standards, etc.  I looked for
something in the manual like what you wrote about defining a new locale,
but didn't find it.  Unless I missed it, it would be another thing that
would be nice to include.

    I think the appendix "Language Codes" explains it all.

It does, thanks.  But the issue is the explicit statement in the text
that ll is a *two* letter code.  Given that statement, which seemed
completely clear and unambiguous, I didn't think of looking further, or
interpreting "two" as really meaning "two or three".  So I still suggest
some change to help readers, whether the few extra words I sent before
or something else.

>   ... an @w{ISO 639} language code, which is usually two letters but
>   may be three ...

Best,
Karl