Hi Hans

thanks for the checker, that surely helps. So I could find a solution (perhaps not the best) for my problem:

\m{T_{\text{½}}}

Thanks again
Christian



2015-04-17 23:51 GMT+02:00 Hans Hagen <pragma@wxs.nl>:
On 4/17/2015 9:41 PM, Christian Prim wrote:
Hi

a year or so before one could simply typeset the physical half-life as
shown in MWE:

\usetypescript[palatino]
\setupbodyfont[palatino]
\starttext
     ½ α
     \m{T_α}
     \m{T_½}
\stoptext

The greek letter is just to show, that utf-8 works as expected. In
actual beta (and probably longer before) this doesn't work anymore. What
have I missed?

Are you sure? palatino doesn't have that character in its math repertoire (it might have been present in the alternative that uses px fonts combined with a pagella text font in which case they're coming from text). The math subsystem of context does to some extend accept super and subscript characters but not (at least not now) these fractions. Is this really needed? It can be done but quite some extra overhead for bad practice.

Anyway, I've added a checker so that at least it gets reported (assuming the use of one math collection):

mkiv lua stats  > unknown math characters: ½ (U+000BD) (n=3)

Hans



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