[NTG-context] \everymath and ' accent

[Hans Hagen]

morgan.brassel at free.fr wrote:
> Hi everyone,
> 
> This topic has already been discussed on the list, but I didn't clearly
> understand the conclusion, so I'm asking again... It is not clear to me why the
> following
> 
> \everymath{\displaystyle}
> \starttext
> \startformula \frac{1}{A'} \stopformula
> $\frac{1}{A'}$
> \stoptext
> 
> fails with ConTeXt (on the ' inside $.$), while
> 
> \documentclass{minimal}
> \everymath{\displaystyle}
> \begin{document}
> \[ \frac{1}{A'} \]
> $\frac{1}{A'}$
> \end{document}
> 
> is ok with LaTeX.
> 
> The use of \everymath is to blame here, but why?

it's pretty dangerous to overload \everymath

maybe \appendtoks\displaystyle\to\everymath works

Hans


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