Hi!

You are not in math mode.

/Mikael

Den sön 19 jan. 2025 10:45Bruce Horrocks <ntg@scorecrow.com> skrev:

> What am I doing wrong here, please?
>
> \starttext
> \frac{1}{2}
> \stoptext
>
> gives
>
> tex error       > tex error on line 2 in file ./tt.tex: Missing $ inserted
>
> <inserted text>
>
>     $\mathatom
> <macro> \math_atom_by_parameter_indeed
>     #1->\mathatom
>     \s!class \mathcodechecked {#1}
> <macro> \math_frac
>     ...meter #2\or \setupcurrentmathfraction [#2]\fi \edef
> \p_math_fraction_fences {\mathfractionparameter \c!fences }\dostarttagged
> \t!mfractionstack {\mathfractionparameter \c!mathmeaning
> }\math_atom_by_parameter \mathfractionparameter
>     \bgroup \ifem ...
> <to be read again>
>
>     {
> <line 3.2>
>     \frac{
>     1}{2}
>
> 1     \starttext
> 2 >>  \frac{1}{2}
> 3     \stoptext
> I've inserted a begin-math/end-math symbol since I think you left one out.
> Proceed, with fingers crossed.
> mtx-context     | fatal error: return code: 1
>
> —
> Bruce Horrocks
> Hampshire, UK
>
>
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