Hi Carsten,
Carsten Dominik <carsten.domi...@gmail.com> writes:
> I'd be interested to see a patch to this effect.
For now here's the filter I use and a add-to-list that hopefully
works. It could be turned into a general function such that
- Certain packages are only required with certain flavors of TeX
(curtsy of iftex).
- It only applies to the preamble (e.g. I don't want it in my
code-blocks).
For me it works great because I can quickly check drafts with pdftex
(which is substantially faster on my system) and switch to xelatex or
lualatex for more serious drafts.
(setq rasmus/org-protected-packages '(inputenc fontenc))
(add-to-list 'org-latex-default-packages-alist '("" "iftex" nil))
(defun rasmus/org-latex-filter-protect-inputenc (text backend info)
"Make inputenc and fontenc only load when using pdflatex"
(when (org-export-derived-backend-p backend 'latex 'beamer)
(replace-regexp-in-string
(format "\\(\\\\usepackage\\[.*\\]{\\(%s\\)}\\)"
(mapconcat 'symbol-name pank/org-protected-packages "\\|"))
"\\\\ifPDFTeX\\1\\\\else\\\\fi"
text)))
(add-to-list 'org-export-filter-final-output-functions
'rasmus/org-latex-filter-protect-inputenc)
The output tex file looks something like this:
\ifPDFTeX\usepackage[utf8]{inputenc}\else\fi
\ifPDFTeX\usepackage[T1]{fontenc}\else\fi
BTW: I think the \else is redundant.
–Rasmus
--
There are known knowns; there are things we know that we know.
