(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
(* (c) Copyright 2006-2016 Microsoft Corporation and Inria. *)
Require Import ssreflect.
Require Import ssrbool TestSuite.ssr_mini_mathcomp.
Lemma test (x : bool) : True.
have H1 x := x.
have (x) := x => H2.
have H3 T (x : T) := x.
have ? : bool := H1 _ x.
have ? : bool := H2 _ x.
have ? : bool := H3 _ x.
have ? (z : bool) : forall y : bool, z = z := fun y => refl_equal _.
have ? w : w = w := @refl_equal nat w.
have ? y : true by [].
have ? (z : bool) : z = z.
exact: (@refl_equal _ z).
have ? (z w : bool) : z = z by exact: (@refl_equal _ z).
have H w (a := 3) (_ := 4) : w && true = w.
by rewrite andbT.
exact I.
Qed.
Lemma test1 : True.
suff (x : bool): x = x /\ True.
by move/(_ true); case=> _.
split; first by exact: (@refl_equal _ x).
suff H y : y && true = y /\ True.
by case: (H true).
suff H1 /= : true && true /\ True.
by rewrite andbT; split; [exact: (@refl_equal _ y) | exact: I].
match goal with |- is_true true /\ True => idtac end.
by split.
Qed.
Lemma foo n : n >= 0.
have f i (j := i + n) : j < n.
match goal with j := i + n |- _ => idtac end.
Undo 2.
suff f i (j := i + n) : j < n.
done.
match goal with j := i + n |- _ => idtac end.
Undo 3.
done.
Qed.
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