{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"assert_eq_pnsat!(\"%1$d\","}]}
    assert_eq_pnsat!("%1$d", Some("{0}"));
    assert_eq_pnsat!("%-10.10s", Some("{:<10.10}"));
    assert_eq_pnsat!("%2$.*3$d", Some("{1:02$}"));