pub(super) fn semantic_macro<'a, MS: STeXModuleStore, Pos: StringPosition + 'a>(
arg: &MacroArg<Pos>,
m: Macro<'a, Pos>,
_parser: &mut LaTeXParser<'a, Pos, STeXToken<Pos>, STeXParseState<'a, Pos, MS>>,
) -> MacroResult<'a, Pos, STeXToken<Pos>>