On Wed, May 13, 2020 at 10:22 AM Pierre Dupond <[email protected]> wrote:
>
> > \exp_args:Nxx \setmathfont
> > { \tl_use:N \c__test_MathFont_tl }
> > { [ \tl_use:N \c__test_MathFontSpec_tl ] }
> >
> Thanks for the explanations but this form does not work.
Sorry, my mistake. The three lines above expand to
\setmathfont{Asana-Math}{[Extension=.otf,]}
which is wrong because the optional argument is not seen. In this case
you'd need `\exp_last_unbraced:Nxx`, which can be defined as
\cs_gset_protected:Npn \exp_last_unbraced:Nxx { \::x \::x_unbraced \::: }
but this interface should be used sparingly, so the `\use:x` version is
better.
Phelype
