Possibly related: Pretty fractions. It discussed two ways of adding parsing to wikitext. It sounds like Eric’s solution is what you need, but if you’re looking to do this at tiddler render time, those techniques may help.
Possibly related: Pretty fractions. It discussed two ways of adding parsing to wikitext. It sounds like Eric’s solution is what you need, but if you’re looking to do this at tiddler render time, those techniques may help.