Ihor Radchenko writes:
> #+LANGUAGE: fa
> #+LaTeX_Header: \usepackage[AUTO]{polyglossia}
>
> #+latex_header: \usepackage[AUTO]{fontspec}
I think Pedro is referring to fontenc not fontspec. fontenc cannot be
used in either lualatex or XelaTeX. fontspec is for advanced selection
of truetype and opentype fonts in XeLatex and LuaLaTeX and setting
opentype properties. fontenc is for 'pre-Unicode' LaTeX font encoding. I
would say that what Pedro proposes is limited only to the output in
pdfTeX.
--
Juan Manuel Macías -- Composición tipográfica, tratamiento de datos, diseño
editorial y ortotipografía
