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

[Juan Manuel Macías]

Max Nikulin writes:

> On 18/07/2022 17:32, Juan Manuel Macías wrote:
>> For example, something like this:
>> latex-lang: babel(sorbian) variant(upper)
>> provide(hebrew:import,hyphenrules=+) options(bidi=default),
>> others(french,catalan)
>> returns:
>> \usepackage[french,catalan,uppersorbian,bidi=default]{babel}
>> \babelprovide[import,hyphenrules=+]{hebrew}
>
> I have never tried so complex babel configuration. Should "latex-lang"
> options affect ox-latex in any way besides adding
> \usepackage[...]{babel} and \babelprovide[...]{...}? If not, maybe it
> is better to use

I really think not. It's more of a way to have a more or less complete
configuration of babel (including font options) in a single line and
with a more org-centric syntax. The drawback is that the user would have
to know in this case what he is putting, and know the babel options.

> #+latex_header: \usepackage[french,catalan,uppersorbian,bidi=default]{babel}
> #+latex_header: \babelprovide[import,hyphenrules=+]{hebrew}

That's what I would do as a user. I write all my preambles in pure LaTeX
and don't let Org write anything before the \begin{document} :-)

> directly and add default \usepackage[french]{babel} based on
> "#+language:" only in the case when babel is not loaded through
> "#+latex_header:". Currently such strategy is implemented for inputenc
> or some other package.

humm, what do you think about this idea?:

If I'm not mistaken, the current behavior is as follows. If in the org
document there is this:

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

it returns:

\usepackage[english,french,spanish]{babel}

But it could be extended to the new babel syntax, so that:

#+latex_header: \usepackage[french,catalan,AUTO,bidi=default]{babel}
#+latex_header: \babelprovide[import,hyphenrules=+]{hebrew}
#+language: es

returns:

\usepackage[french,catalan,spanish,bidi=default]{babel}
\babelprovide[import,hyphenrules=+]{hebrew}

Or, if we want to load the main language via babelprovide (using an ini
file instead of an ldf file):

#+latex_header: \usepackage[french,catalan,spanish]{babel}
#+latex_header: \babelprovide[main,import]{AUTO}
#+language: ru

returns:

\usepackage[french,catalan,spanish]{babel}
\babelprovide[main,import]{russian}

(in this case french, catalan and spanish are the secondary languages)

And this could be extended (in LuaTeX and XeTeX only) to the class
options (which is a new babel feature):

#+latex_class: article
#+latex_class_options: [11pt,draft,AUTO]
#+LaTeX_Header: \usepackage{babel}
#+language: ru

returns:

\documentclass[11pt,draft,russian]{article}
\usepackage{babel}