fact: Definition forall_chars__char_in__impl__forall_chars {str ls} {P : _ -> Prop} (H : forall ch, List.In ch ls -> P ch) : impl (forall_chars__char_in str ls) (forall_chars str P).
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.ZArith.ZArith Fiat.Parsers.StringLike.Core Fiat.Parsers.StringLike.Properties Fiat.Common