set "baseuri" "cic:/matita/unfold".
+include "coq.ma".
+
alias symbol "plus" (instance 0) = "Coq's natural plus".
definition myplus \def \lambda x,y. x+y.
unfold myplus.
rewrite > lem.
reflexivity.
-qed.
\ No newline at end of file
+qed.
+
+(* This test needs to parse "uno" in the context of the hypothesis H,
+ not in the context of the goal. *)
+theorem t: let uno \def S O in uno + uno = S uno \to uno=uno.
+ intros. unfold uno in H.
+ reflexivity.
+qed.