{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"{"}]}
        { None, "-", Some(N::Num(10)), Some(N::Num(10)), None, "s", (0, 8), });
    assert_pns_eq_sub!("%-10.10s",
    assert_pns_eq_sub!("%1$d",