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diff --git a/lib/searchstack.mli b/lib/searchstack.mli
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-(************************************************************************)
-(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
-(* \VV/ **************************************************************)
-(* // * This file is distributed under the terms of the *)
-(* * GNU Lesser General Public License Version 2.1 *)
-(************************************************************************)
-
-type 'a t
-type ('a,'b) search = [ `Stop of 'b | `Cont of 'a ]
-
-val create : unit -> 'a t
-val push : 'a -> 'a t -> unit
-val find : ('c -> 'a -> ('c, 'b) search) -> 'c -> 'a t -> 'b
-val is_empty : 'a t -> bool
-val iter : ('a -> unit) -> 'a t -> unit
-val clear : 'a t -> unit
-val length : 'a t -> int
-
-(* may raise Stack.Empty *)
-val pop : 'a t -> 'a
-val top : 'a t -> 'a
-
-(* Extra *)
-val to_list : 'a t -> 'a list