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Message-ID:  <53F4DE0E.2070704@tex-tipografia.com>
Date:         Wed, 20 Aug 2014 19:42:38 +0200
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From: Javier Bezos <listas@TEX-TIPOGRAFIA.COM>
Subject: Re: \directlua in LaTeX3
To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
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Status: R

> I was solving the same problem and only solution I've found was to
> parse `language.dat` file, see (some example is at the bottom of the
> file):
>
> https://github.com/michal-h21/luavlna/blob/master/langno.lua

I'm not sure this is what you are looking for, but in babel 3.9 
\bbl@languages stores a snapshot of the loaded languages in the
form \bbl@elt{<language-name>}{<number>} {<patterns-file>}
{<exceptions-file>}.

Javier