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diff --git a/plugins/extraction/common.mli b/plugins/extraction/common.mli
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+(************************************************************************)
+(*         *   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)         *)
+(************************************************************************)
+
+open Names
+open Miniml
+
+(** By default, in module Format, you can do horizontal placing of blocks
+    even if they include newlines, as long as the number of chars in the
+    blocks are less that a line length. To avoid this awkward situation,
+    we attach a big virtual size to [fnl] newlines. *)
+
+val fnl : unit -> Pp.t
+val fnl2 : unit -> Pp.t
+val space_if : bool -> Pp.t
+
+val pp_par : bool -> Pp.t -> Pp.t
+
+(** [pp_apply] : a head part applied to arguments, possibly with parenthesis *)
+val pp_apply : Pp.t -> bool -> Pp.t list -> Pp.t
+
+(** Same as [pp_apply], but with also protection of the head by parenthesis *)
+val pp_apply2 : Pp.t -> bool -> Pp.t list -> Pp.t
+
+val pp_tuple_light : (bool -> 'a -> Pp.t) -> 'a list -> Pp.t
+val pp_tuple : ('a -> Pp.t) -> 'a list -> Pp.t
+val pp_boxed_tuple : ('a -> Pp.t) -> 'a list -> Pp.t
+
+val pr_binding : Id.t list -> Pp.t
+
+val rename_id : Id.t -> Id.Set.t -> Id.t
+
+type env = Id.t list * Id.Set.t
+val empty_env : unit -> env
+
+val rename_vars: Id.Set.t -> Id.t list -> env
+val rename_tvars: Id.Set.t -> Id.t list -> Id.t list
+val push_vars : Id.t list -> env -> Id.t list * env
+val get_db_name : int -> env -> Id.t
+
+type phase = Pre | Impl | Intf
+
+val set_phase : phase -> unit
+val get_phase : unit -> phase
+
+val opened_libraries : unit -> ModPath.t list
+
+type kind = Term | Type | Cons | Mod
+
+val pp_global : kind -> GlobRef.t -> string
+val pp_module : ModPath.t -> string
+
+val top_visible_mp : unit -> ModPath.t
+(* In [push_visible], the [module_path list] corresponds to
+   module parameters, the innermost one coming first in the list *)
+val push_visible : ModPath.t -> ModPath.t list -> unit
+val pop_visible : unit -> unit
+
+val get_duplicate : ModPath.t -> Label.t -> string option
+
+type reset_kind = AllButExternal | Everything
+
+val reset_renaming_tables : reset_kind -> unit
+
+val set_keywords : Id.Set.t -> unit
+
+(** For instance: [mk_ind "Coq.Init.Datatypes" "nat"] *)
+
+val mk_ind : string -> string -> MutInd.t
+
+(** Special hack for constants of type Ascii.ascii : if an
+    [Extract Inductive ascii => char] has been declared, then
+    the constants are directly turned into chars *)
+
+val is_native_char : ml_ast -> bool
+val get_native_char : ml_ast -> char
+val pp_native_char : ml_ast -> Pp.t