{"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"//"}]}
    // Ranges that start on `gap+1` or singletons `gap+1`.
    let mut onebefore: SmallVec<[_; 1]> = Default::default();
    let mut oneafter: SmallVec<[_; 1]> = Default::default();