> That looks like a good start! Though, I can't find the string @elt in
> the output of
>
> \documentclass{article}
> \usepackage[german]{babel}
> \begin{document}
> \makeatletter
> \message{\bbl@languages}
> \makeatother
> \end{document}
Replace
\message{\bbl@languages}
by
\show\bbl@languages
to see the actual (unexpanded) contents of \[log in to unmask] Or to see it
in action, try