plain TeX: undefined control sequence \protected

David Carlisle d.p.carlisle at gmail.com
Thu Dec 1 13:15:59 CET 2022


use pdftex, or etex (or \let\protected=\relax)

Davd


On Thu, 1 Dec 2022 at 12:00, Rodolfo Medina <rodolfo.medina at gmail.com>
wrote:

> Hi all.
>
> After upgrading TeXlive in my Debian system, the simple folowing example:
>
> \input color
>
> hallo
>
> \vfill\eject\end
>
> processed with simply `tex test, produces the following error:
>
> $ tex test
> This is TeX, Version 3.141592653 (TeX Live 2022/Debian) (preloaded
> format=tex)
> (./test.tex (/usr/share/texlive/texmf-dist/tex/plain/graphics-pln/color.tex
> (/usr/share/texlive/texmf-dist/tex/plain/graphics-pln/miniltx.tex
> ! Undefined control sequence.
> l.548   \protected
>                   \def\mathcolor{\begingroup\@ifnextchar[\mlx at mathcolora
> \mlx...
>
> ?
>
>
> Please help with this issue.
>
> Thanks,
>
> Rodolfo
>
>
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