colors

[Gérald Tenenbaum]

Thank you.
Actually, I found up that it is the update of the package graphics that 
broke the use of color, that was previously known to work with eplain. I 
reverted graphics to the previous version and color works again.
Regards,

Gérald

David Carlisle a écrit le 13/6/22 à 13:00 :
>
> You should I think be able to add
>
>
> \ifx\mathcolor\@undefined
>   % simplified version of \mathcolor
> \protected\def\mathcolor{\begingroup\@ifnextchar[\mlx at mathcolora\mlx at mathcolorb}
> \long\def\mlx at mathcolora[#1]#2#3{\color[#1]{#2}#3\endgroup}
> \long\def\mlx at mathcolorb#1#2{\color{#1}#2\endgroup}
> \fi
>
> to the end of miniltx.ltx  If that works for your real documents I'll 
> arrange an update at ctan
>
> David
>
>
> On Mon, 13 Jun 2022 at 10:56, Gérald Tenenbaum <gerald.ten at free.fr 
> <mailto:gerald.ten at free.fr>> wrote:
>
>     Hello,
>
>     Here is a small file that used to work but doesn't anymore:
>
>     \input eplain
>     \beginpackages
>     \usepackage{color}
>     \endpackages
>     \long\def\red#1{{\color{red}#1}}
>     \red{ab}
>     \bye
>
>
>     The error message is:
>
>     This is pdfTeX, Version 3.141592653-2.6-1.40.24 (TeX Live 2022)
>     (preloaded format=pdftex)
>      restricted \write18 enabled.
>     entering extended mode
>     (./essai.tex
>     (/usr/local/texlive/2022/texmf-dist/tex/eplain/eplain.tex)
>     (/usr/local/texlive/2022/texmf-dist/tex/plain/graphics-pln/miniltx.tex)
>     (/usr/local/texlive/2022/texmf-dist/tex/latex/graphics/color.sty
>     (/usr/local/texlive/2022/texmf-dist/tex/latex/graphics-cfg/color.cfg)
>     (/usr/local/texlive/2022/texmf-dist/tex/latex/graphics-def/pdftex.def)
>     (/usr/local/texlive/2022/texmf-dist/tex/latex/graphics/mathcolor.ltx
>     /usr/local/texlive/2022/texmf-dist/tex/latex/graphics/mathcolor.ltx:21:
>     Undefined control sequence.
>     l.21 \ExplSyntaxOn
>
>     Many thanks for help.
>     Regards,
>
>     Gérald

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