Function do_def_macros

fn do_def_macros<'a, MS: STeXModuleStore, Err: FnMut(String, SourceRange<LSPLineCol>, DiagnosticLevel)>(
    p: &mut LaTeXParser<'a, ParseStr<'a, LSPLineCol>, STeXToken<LSPLineCol>, Err, STeXParseState<'a, LSPLineCol, MS>>,
)