{"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"assert_eq_pnsat!(\"%-*.*s\","}]}
    assert_eq_pnsat!("%-*.*s", None);
    assert_eq_pnsat!("%-10.*s", Some("{:<10.*}"));
    assert_eq_pnsat!("%.6i", Some("{:06}"));