On 4/26/2021 9:59 AM, Jairo A. del Rio wrote:
>
>
> El lun, 26 de abr. de 2021 a la(s) 01:49, Hans Hagen (j.hagen@xs4all.nl
> <mailto:j.hagen@xs4all.nl>) escribió:
>
>     On 4/26/2021 6:59 AM, Jairo A. del Rio wrote:
>      > The following:
>      >
>      > \starttext
>      >
>      > \startMPinitializations
>      >
>      > input cmarrows;
>      >
>      > setup_cmarrows(arrow_name = "texarrow"; parameter_file = "cmr6.mf";
>      > macro_name = "nicearrow");
>      >
>      > \stopMPinitializations
>      >
>      > \startMPpage
>
>      > metafun > log > error: Equation cannot be performed (numeric=pair)
>     I don't know, but from the message it looks like some 'local' variables
>     is not saved and defined. I'm surprised that loading some mf file works
>     at all (because it also assumes some mf related definitions). I also
>     hav
>     eno clue if such a package adopts 'core' metafun code (and mpiv metafun
>     is different from mpii).
>
>
> It's a generic, "pure" MetaPost package:
>
> https://www.ctan.org/pkg/cmarrows <https://www.ctan.org/pkg/cmarrows>

that doesn't make it immune from clashes in used variables with differnt
types ... metafun is more than plain mp so more can clash

> Fonts are in /fonts/source/public in a TeX Live distribution, in case it
> helps.
i have a rather minimal tex setup so i can't run that (i'm not going to
clutter my system now)

Hans

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