pub fn pdfunescapehex<ET: EngineTypes>(
engine: &mut EngineReferences<'_, ET>,
exp: &mut Vec<ET::Token>,
tk: ET::Token,
) -> TeXResult<(), ET>pub fn pdfunescapehex<ET: EngineTypes>(
engine: &mut EngineReferences<'_, ET>,
exp: &mut Vec<ET::Token>,
tk: ET::Token,
) -> TeXResult<(), ET>