{"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"assert_pns_eq_sub!(\"%.6i\","}]}
    assert_pns_eq_sub!("%.6i",
        { None, "-", Some(N::Next), Some(N::Next), None, "s", (0, 6), });
        { None, "", None, Some(N::Num(6)), None, "i", (0, 4), });