Re: [PATCH] ox-latex.el: Unify in one single list Babel and Polyglossia languages alists

[Juan Manuel Macías]

Juan Manuel Macías writes:

> In any case, I personally think that org-latex-language-alist, as it is
> now in this patch, is sufficient.

By the way, Maxim. I have been doing some tests with pdfLaTeX. I've
known for a while now that it's no longer necessary to load the inputenc
package. But it seems that it is not even necessary to load fontenc with
the encoding of each language. Try compiling this:

#+begin_src latex
  \documentclass{article}
  \usepackage[russian,polutonikogreek]{babel}

  \begin{document}

  \today

  Δαρείου καὶ Παρυσάτιδος γίγνονται παῖδες δύο, πρεσβύτερος μὲν Ἀρταξέρξης, 
νεώτερος δὲ
  Κῦρος· ἐπεὶ δὲ ἠσθένει Δαρεῖος καὶ ὑπώπτευε τελευτὴν τοῦ βίου, ἐβούλετο τὼ 
παῖδε ἀμφοτέρω
  παρεῖναι.

  \selectlanguage{russian}

  \today

  Emacs написан на двух языках: C и Emacs Lisp (Elisp, диалект Лиспа). При этом 
сам редактор
  является интерпретатором Elisp. По сути дела, большая часть Emacs написана на 
языке Elisp,
  и её можно рассматривать как расширение к основной программе.

  \end{document}
#+end_src

In TeX live 2022 the compilation is correct (I think). It seems that
Babel (or russian/greek.ldf) loads the font encodings according to the
declared languages. From the log:

#+begin_src sh
(/usr/share/texmf-dist/tex/latex/cyrillic/t2aenc.def
(/usr/share/texmf-dist/tex/latex/base/t2aenc.dfu)))
(/usr/share/texmf-dist/tex/generic/babel-greek/greek.ldf
(/usr/share/texmf-dist/tex/latex/greek-fontenc/lgrenc.def
(/usr/share/texmf-dist/tex/latex/greek-inputenc/lgrenc.dfu)
(/usr/share/texmf-dist/tex/latex/greek-fontenc/greek-fontenc.def))))
(/usr/share/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def) (./fontenc.aux
 (/usr/share/texmf-dist/tex/generic/babel/locale/es/babel-spanish.tex)
(/usr/share/texmf-dist/tex/latex/cbfonts-fd/lgrcmr.fd))
(/usr/share/texmf-dist/tex/latex/cyrillic/t2acmr.fd) [1{/var/lib/texmf/fonts/ma
p/pdftex/updmap/pdftex.map}] (./fontenc.aux) ){/usr/share/texmf-dist/fonts/enc/
dvips/cm-super/cm-super-t2a.enc}</usr/share/texmf-dist/fonts/type1/public/cbfon
ts/grmn1000.pfb></usr/share/texmf-dist/fonts/type1/public/cm-super/sfrm1000.pfb
#+end_src

Is this normal or is it a new Babel feature? If it is a new feature, I
can't find it anywhere in the documentation.

Best regards,

Juan Manuel