EqDecide

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@1336 85f007b7-540e-0410-9357-904b9bb8a0f7

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+
+Inductive T : Set := A: T | B :T->T.
+
+Lemma lem1 : (x,y:T){x=y}+{~x=y}.
+Decide Equality.
+Qed.
+
+Lemma lem2 : (x,y:T){x=y}+{~x=y}.
+Intros x y.
+Decide Equality x y.
+Qed.
+
+Lemma lem3 : (x,y:T){x=y}+{~x=y}.
+Intros x y.
+Decide Equality y x.
+Qed.
+
+Lemma lem4 : (x,y:T){x=y}+{~x=y}.
+Intros x y.
+Compare x y; Auto.
+Qed.
+