Re: Code block syntax highlighting in async export

[Ihor Radchenko <yantar92@gmail.com>]

David Lukeš <dafydd.lukes@gmail.com> writes:

>> I'll investigate if I can leverage any of the workarounds mentioned.
>
> So, for batch processing, avoiding --batch or --script and just using
> --load with a script that either ends by killing Emacs, or killing it
> via an additional --eval, works, i.e. syntax highlighting uses colors.
> This was suggested in [1]. As [2] points out, adding -nw removes the
> colors, and so does adding --daemon (suggested in [3]), so don't do
> either.
>
> Enabling font-lock-mode manually and defining all the fontification
> (see [4]) sounds like it would also work, but honestly, that's too
> involved, so I didn't try it.

To clarify, the latest Org version should not care about font-lock being
enabled. `font-lock-ensure' usually works in batch mode as well even
though font-lock-mode is technically disabled.

Except when it does not. Some major modes do fontification awkwardly,
which can be considered a bug in those major modes.
You can refer to https://yhetil.org/emacs-bugs/874jzdhh5m.fsf@localhost/

> Using an external colorizer (as shown in [5]), seems like a good
> alternative, if non-Emacs dependencies are acceptable.
>
> These two last options can also be made to work with async export (my
> original question), where you don't have control over how the batch
> instance of Emacs is invoked.
>
>> There’s a decent chance that `engrave-faces' (a package of mine that can now be
>> used for code blocks in LaTeX) will work in batch mode. Integrating it with
>> `ox-html', `ox-ansii', and `ox-odt' are all (distantly) on my todo list.
>
> Sounds great! If it will work in regular batch mode, then it should
> work with async as well :)

I would not be so sure. If the issue is major-mode not doing
fontification in batch mode, engrave-faces cannot do much.

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
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