pub fn eTeXrevision<ET: EngineTypes>(
_engine: &mut EngineReferences<'_, ET>,
exp: &mut Vec<ET::Token>,
_tk: ET::Token,
) -> TeXResult<(), ET>pub fn eTeXrevision<ET: EngineTypes>(
_engine: &mut EngineReferences<'_, ET>,
exp: &mut Vec<ET::Token>,
_tk: ET::Token,
) -> TeXResult<(), ET>