In fact, you are both right, write the macro differently.


\def\repere{\bigl(O\,;I,J\bigr)}

\starttext
\dorecurse{2}{blabla} $\repere$ \dorecurse{2}{blabla}

\dorecurse{2}{blabla} $\bigl(O\,;I,J\bigr)$ \dorecurse{2}{blabla}

\stoptext

Thanks,
Fabrice

2015-08-27 13:32 GMT+02:00 Peter Münster <pmlists@free.fr>:

> On Thu, Aug 27 2015, Fabrice Couvreur wrote:
>
> > I did not know it because, before migrating to context, I used latex with
> > this :  \newcommand{\repere}{$\bigl(O\,;I,J\bigr)$.
>
> In LaTeX there is no space neither:
>
> --8<---------------cut here---------------start------------->8---
> \newcommand{\repere}{$\bigl(O\,;I,J\bigr)$}
> \documentclass{article}
> \begin{document}
> x \repere x
> \end{document}
> --8<---------------cut here---------------end--------------->8---
>
> --
>            Peter
>
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