fact: Definition String_rect (P : String -> Type) : (forall str, length str = 0 -> P str) -> (forall n str (Hlen : length str = S n) (IHstr : forall str', length str' = n -> P str'), P str) -> forall str, P str.
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.ZArith.ZArith Fiat.Common Fiat.Common.List.Operations Fiat.Common.List.ListFacts Fiat.Common.Le Fiat.Common.Tactics.SetoidSubst Fiat.Common.Tactics.IsClosed Fiat.Parsers.StringLike.Core Fiat.Common.UIP