Bug#1042450: elpa-org: #+LANGUAGE: de-de is not working in LaTeX export

[Max Nikulin <manikulin@gmail.com>]

On 13/09/2023 03:12, Nicholas D Steeves wrote:
> > Changes will be included into the next major Org mode release.
>
> So 9.6.10 or possibly 9.7.0.

The patch is committed to the main branch, but not to bugfix, so >= 9.7.0.

> > #+language: de
> > #+latex_header: \usepackage[AUTO]{babel}
> >
> > results in
> >
> > \usepackage[ngerman]{babel}
> > \hypersetup{
> >    % ...
> >    pdflang={German}}
> >
> > It is a bit different from Org mode 9.5 however
>
> I assume you mean 9.5.x, and that this will affect uses who upgrade from
> Debian 12/bookworm (or older) to future 13/trixie.

yes

> > \usepackage[germanb]{babel}
> > \hypersetup{
> >    % ...
> >    pdflang={Germanb}}
>
> Hm, this looks like something that should probably be noted in upstream
> org-mode release notes, which would also eventually trickle down to
> Emacs release (due to its bundled copy of org-mode).

There are no modifications of the ORG-NEWS file in the commit. Perhaps 
more significant changes are coming.

I am in doubts if pre-1996 "traditional" orthography (germanb) was 
really intentional for "de". Perhaps post-1996 "reformed" style 
(ngerman) is closer to user expectations. I do not speak German however, 
so I can not judge if it was really a bug or (an obscure from my point 
of view) feature. Long language mapping list was added at once.

Anyway those who need namely older "germanb" may use

#+language: de
#+latex_header: \usepackage[english,germanb]{babel}

instead of "AUTO"

#+language: de
#+latex_header: \usepackage[english,AUTO]{babel}