Sorry, I forgot to add quotes :-) "\\usepackage{iftex}...\\fi"
Juan Manuel Macías writes:
> (format
> \\usepackage{iftex}
> \\ifpdftex
> \\relax
> \\else
> \\usepackage{fontspec}
> \\usepackage{unicode-math}
> \\defaultfontfeatures{Scale=MatchLowercase}
> \\defaultfontfeatures[\\rmfamily]{Ligatures=TeX}
> \\setmainfont{%s}
> \\setsansfont{%s}
> \\setmonofont{%s}
> \\fi
> org-latex-fontspec-mainfont
> org-latex-fontspec-sansfont
> org-latex-fontspec-monofont)
