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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)         *)
+(************************************************************************)
+
+(** Ltac toplevel command entries. *)
+
+open Vernacexpr
+open Tacexpr
+
+(** {5 Tactic Definitions} *)
+
+val register_ltac : locality_flag -> Tacexpr.tacdef_body list -> unit
+(** Adds new Ltac definitions to the environment. *)
+
+(** {5 Tactic Notations} *)
+
+type 'a grammar_tactic_prod_item_expr = 'a Pptactic.grammar_tactic_prod_item_expr =
+| TacTerm of string
+| TacNonTerm of ('a * Names.Id.t option) Loc.located
+
+type raw_argument = string * string option
+(** An argument type as provided in Tactic notations, i.e. a string like
+    "ne_foo_list_opt" together with a separator that only makes sense in the
+    "_sep" cases. *)
+
+type argument = Genarg.ArgT.any Extend.user_symbol
+(** A fully resolved argument type given as an AST with generic arguments on the
+    leaves. *)
+
+val add_tactic_notation :
+  locality_flag -> int -> raw_argument grammar_tactic_prod_item_expr list ->
+  raw_tactic_expr -> unit
+(** [add_tactic_notation local level prods expr] adds a tactic notation in the
+    environment at level [level] with locality [local] made of the grammar
+    productions [prods] and returning the body [expr] *)
+
+val register_tactic_notation_entry : string -> ('a, 'b, 'c) Genarg.genarg_type -> unit
+(** Register an argument under a given entry name for tactic notations. When
+    translating [raw_argument] into [argument], atomic names will be first
+    looked up according to names registered through this function and fallback
+    to finding an argument by name (as in {!Genarg}) if there is none
+    matching. *)
+
+val add_ml_tactic_notation : ml_tactic_name -> level:int ->
+  argument grammar_tactic_prod_item_expr list list -> unit
+(** A low-level variant of {!add_tactic_notation} used by the TACTIC EXTEND
+    ML-side macro. *)
+
+(** {5 Tactic Quotations} *)
+
+val create_ltac_quotation : string ->
+  ('grm Loc.located -> raw_tactic_arg) -> ('grm Pcoq.Gram.entry * int option) -> unit
+(** [create_ltac_quotation name f e] adds a quotation rule to Ltac, that is,
+    Ltac grammar now accepts arguments of the form ["name" ":" "(" <e> ")"], and
+    generates an argument using [f] on the entry parsed by [e]. *)
+
+(** {5 Queries} *)
+
+val print_ltacs : unit -> unit
+(** Display the list of ltac definitions currently available. *)
+
+val print_located_tactic : Libnames.reference -> unit
+(** Display the absolute name of a tactic. *)
+
+type _ ty_sig =
+| TyNil : (Geninterp.interp_sign -> unit Proofview.tactic) ty_sig
+| TyIdent : string * 'r ty_sig -> 'r ty_sig
+| TyArg :
+  (('a, 'b, 'c) Extend.ty_user_symbol * Names.Id.t) Loc.located * 'r ty_sig -> ('c -> 'r) ty_sig
+| TyAnonArg :
+  ('a, 'b, 'c) Extend.ty_user_symbol Loc.located * 'r ty_sig -> 'r ty_sig
+
+type ty_ml = TyML : 'r ty_sig * 'r -> ty_ml
+
+val tactic_extend : string -> string -> level:Int.t -> ty_ml list -> unit