colors

[Ulrike Fischer]

Am Mon, 13 Jun 2022 19:01:12 +0900 schrieb Norbert Preining:

>> Here is a small file that used to work but doesn't anymore:
> 
> Cannot reproduce this:

I can. Since the newest latex release, color.sty loads mathcolor.ltx
for the \mathcolor command and this requires expl3.

You can avoid the error by giving \mathcolor a definition then the
loading of the file will be skipped:

\input eplain

\beginpackages
\def\mathcolor{}
\usepackage{color}
\endpackages
\long\def\red#1{{\color{red}#1}}
\red{ab}
\bye




-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/