{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
        // IDENT + `!`: `println!()`, but `if !x { ... }` needs a space after the `if`
        (Tok(Token { kind: Ident(sym, is_raw), span }, _), Tok(Token { kind: Bang, .. }, _))