fact: Definition beq_S_leb : forall x n : nat, (opt2.beq_nat x (S n) || opt2.leb x n)%opt2_bool = opt2.leb x (S n) := beq_S_leb.
imports: Fiat.Parsers.ContextFreeGrammar.Core Fiat.Parsers.ContextFreeGrammar.PreNotations Fiat.Parsers.StringLike.FirstCharSuchThat Coq.Strings.String Coq.Arith.PeanoNat Fiat.Computation.Core Coq.Program.Program Fiat.Computation.ApplyMonad Fiat.Computation.SetoidMorphisms Fiat.Common Fiat.Parsers.StringLike.Core Fiat.Parsers.ContextFreeGrammar.Equality Fiat.Parsers.ContextFreeGrammar.Carriers Fiat.Common.Equality Fiat.Common.BoolFacts Fiat.Common.NatFacts Coq.Lists.List