[tex4ht] tex4ht and cej document class

[Ulrike Fischer]

Am Fri, 24 Jun 2011 17:29:55 +0200 schrieb Oliver Kopp:

> Hi,
> 
> I'm trying to use the cej document class with LaTeX. The class is
> available at http://www.versita.com/cejcs/authors/
> 
> The minimal example is:
> 
> --cut--
> \documentclass[DVI]{cej}
> \begin{document}
> test
> \end{document}
> --end--
> 
> It compiles fine with LaTeX, but tex4ht outputs following:
> 
> --cut--
> (C:\tex4ht\texmf\tex\generic\tex4ht\latex.4ht
> ! You can't use `\gdef' after \the.
> <recently read> \gdef
> 
> l.106 \edef\:today{\the\year-
>                              \ifnum \month<10 0\fi
> --end--
> 
> 
> I looked into cej.cls and produced a bare minimum example:
> 
> \documentclass{article}
> \makeatletter
> \def\year#1{\expandafter\gdef\csname cej at year\endcsname{#1}}
> \makeatother
> \begin{document}
> test
> \end{document}
> 
> This document compiles fine with latex, but tex4ht has the above problem.
> 
> Is it possible to find a solution in latex.4ht or have I change cej.sty?

\year (like \month, \day \time) is a TeX-primitive (a register which
contains the current year). It is absolutly not a good idea that the
class redefines it. 

Your small example works with latex, but you only need to add today
to get errors:

 \documentclass{article}
 \makeatletter
 \def\year#1{\expandafter\gdef\csname cej at year\endcsname{#1}}
 \makeatother
 \begin{document}
 test \today
 \end{document}


-- 
Ulrike Fischer