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

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