fact: Definition filter_goals {A} : mlist (A *m goal gs_any) -> M (mlist (A *m goal gs_any)) := M.filter (fun '(m: x,g) => is_open g).
imports: Strings.String ssrmatching.ssrmatching Mtac2(Logic Datatypes List Utils Logic intf.Sorts) Strings.String NArith.BinNat NArith.BinNatDef