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diff --git a/camlp4/lib/extfun.ml b/camlp4/lib/extfun.ml
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--- a/camlp4/lib/extfun.ml
+++ /dev/null
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-(* camlp4r *)
-(* $Id$ *)
-(* Copyright 2001 INRIA *)
-
-(* Extensible Functions *)
-
-type t 'a 'b = list (matching 'a 'b)
-and matching 'a 'b = { patt : patt; has_when : bool; expr : expr 'a 'b }
-and patt =
-  [ Eapp of list patt
-  | Eacc of list patt
-  | Econ of string
-  | Estr of string
-  | Eint of string
-  | Etup of list patt
-  | Evar of unit ]
-and expr 'a 'b = 'a -> option 'b
-;
-
-exception Failure;
-
-value empty = [];
-
-(*** Apply ***)
-
-value rec apply_matchings a =
-  fun
-  [ [m :: ml] ->
-      match m.expr a with
-      [ None -> apply_matchings a ml
-      | x -> x ]
-  | [] -> None ]
-;
-
-value apply ef a =
-  match apply_matchings a ef with
-  [ Some x -> x
-  | None -> raise Failure ]
-;
-
-(*** Trace ***)
-
-value rec list_iter_sep f s =
-  fun
-  [ [] -> ()
-  | [x] -> f x
-  | [x :: l] -> do { f x; s (); list_iter_sep f s l } ]
-;
-
-value rec print_patt =
-  fun
-  [ Eapp pl -> list_iter_sep print_patt2 (fun () -> print_string " ") pl
-  | p -> print_patt2 p ]
-and print_patt2 =
-  fun
-  [ Eacc pl -> list_iter_sep print_patt1 (fun () -> print_string ".") pl
-  | p -> print_patt1 p ]
-and print_patt1 =
-  fun
-  [ Econ s -> print_string s
-  | Estr s -> do { print_string "\""; print_string s; print_string "\"" }
-  | Eint s -> print_string s
-  | Evar () -> print_string "_"
-  | Etup pl ->
-      do {
-        print_string "(";
-        list_iter_sep print_patt (fun () -> print_string ", ") pl;
-        print_string ")"
-      }
-  | Eapp _ | Eacc _ as p ->
-      do { print_string "("; print_patt p; print_string ")" } ]
-;
-
-value print ef =
-  List.iter
-    (fun m ->
-       do {
-         print_patt m.patt;
-         if m.has_when then print_string " when ..." else ();
-         print_newline ()
-       })
-    ef
-;
-
-(*** Extension ***)
-
-value insert_matching matchings (patt, has_when, expr) =
-  let m1 = {patt = patt; has_when = has_when; expr = expr} in
-  let rec loop =
-    fun
-    [ [m :: ml] as gml ->
-        if m1.has_when && not m.has_when then [m1 :: gml]
-        else if not m1.has_when && m.has_when then [m :: loop ml]
-        else
-          let c = compare m1.patt m.patt in
-          if c < 0 then [m1 :: gml]
-          else if c > 0 then [m :: loop ml]
-          else if m.has_when then [m1 :: gml]
-          else [m1 :: ml]
-    | [] -> [m1] ]
-  in
-  loop matchings
-;
-
-(* available extension function *)
-
-value extend ef matchings_def =
-  List.fold_left insert_matching ef matchings_def
-;