On Sun, Jun 28, 2020 at 10:48 PM Jairo A. del Rio <jairoadelrio6@gmail.com>
wrote:

> I've read the following is not possible in TeX
>
> \def#1\macro{blabla#1}
>
> where arguments come before. The only partial exceptions are commands like
> \atop or \over, which are in fact primitives. Is there a way to do this in
> ConTeXt?
>
>
you can build a lpeg and parse the your "extended tex" source, obtaining a
valid tex source.


-- 
luigi