pub fn num_or_name<ET: EngineTypes>(
engine: &mut EngineReferences<'_, ET>,
token: &ET::Token,
) -> TeXResult<Option<NumOrName>, ET>pub fn num_or_name<ET: EngineTypes>(
engine: &mut EngineReferences<'_, ET>,
token: &ET::Token,
) -> TeXResult<Option<NumOrName>, ET>