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(* Wish #2154 by E. van der Weegen *)
(* auto was not using f_equal-style lemmas with metavariables occuring
only in the type of an evar of the concl, but not directly in the
concl itself *)
Parameters
(F: Prop -> Prop)
(G: forall T, (T -> Prop) -> Type)
(L: forall A (P: A -> Prop), G A P -> forall x, F (P x))
(Q: unit -> Prop).
Hint Resolve L.
Goal G unit Q -> F (Q tt).
intro.
eauto.
Qed.
(* Test implicit arguments in "using" clause *)
Goal forall n:nat, nat * nat.
auto using (pair O).
Undo.
eauto using (pair O).
Qed.
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