What is the difference between $lang$ and $babel-lang$

What is the difference between $lang$ and $babel-lang$

[R (Chandra) Chandrasekhar]

The LaTeX template features $lang$ and $babel-lang$ not to mention 
$babel-otherlangs$.

What is the difference between $lang$ and $babel-lang$ and can the 
latter not be set to $lang$ in the template?

What are the consequences of doing so?

Thanks.

Chandra

Re: What is the difference between $lang$ and $babel-lang$

[Albert Krewinkel]

Hi Chandra,

"R (Chandra) Chandrasekhar" <chyavana-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> The LaTeX template features $lang$ and $babel-lang$ not to mention
> $babel-otherlangs$.
>
> What is the difference between $lang$ and $babel-lang$ and can the latter not be
> set to $lang$ in the template?

The variable `lang` is expected to be a BCP47 language code. However,
the LaTeX package "babel" used for some language-specific conversions
requires a different language description. That's what `babel-lang`
contains, it's the language given in a way that's understood by that
LaTeX package.

See here for the conversion code:
https://github.com/jgm/pandoc/blob/master/src/Text/Pandoc/Writers/LaTeX/Lang.hs

HTH,
Albert

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Albert Krewinkel
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