Am 19.08.2009 um 16:47 schrieb Hans Hagen:
Eythan Weg wrote:
Hi, I use luatex 0.43 with yesterday's beta. Running \everymath = {\displaystyle} \starttext ${a\over b}$ \stoptext results in ! Use of \dospecialabout doesn't match its definition. l.4 ${a\over b }$ Plain format under luatex has no problem here. If I change \over to \times it runs with fonts changed to roman (i.e, not math italics).
taco and i looked into it (fearing big problems) but it's actually normal; use
\everymath = \expandafter{\the\everymath \displaystyle}
or
\appendtoks \displaystyle \to \everymath
as (among other important things) \everymath does initialize \over
And with \frac it can be configured at context low level (why no key for \setupmathematics?) \chardef\mathfracmode=1 % 0=auto, 1=displaystyle, 2=textstyle, 3=scriptstyle, 4=scriptscriptstyle, 5=mathstyle $\frac{a}{b}$ Wolfgang