(** * Coq codes *)
(** ** Dependencies *)
Require Export RegExp.Utility.
Require Export RegExp.Definitions.
Require Export RegExp.Boolean.
Require Export RegExp.Concat.
Unset Standard Proposition Elimination Names.
(** ** [Char] *)
Add Parametric Morphism : Char with
signature ascii_eq ==> re_eq as Char_mor.

Lemma derive_Char_is_id : forall a r, derive a (Char a ++ r) =R= r.