| `Lam _ as t -> "(" ^ string_of_term_no_pars_lam lev l t ^ ")"
| `Match(t,(v,ar),bs_lift,bs,args) ->
(* assert (bs_lift = lev); *)
- "(["^ varname lev l v ^ (if debug_display_arities then ":"^ string_of_int ar else "") ^",match " ^ string_of_term_no_pars lev l (t :> nf) ^
+ "(["^ varname 0 l v ^ (if debug_display_arities then ":"^ string_of_int ar else "") ^",match " ^ string_of_term_no_pars lev l (t :> nf) ^
" with " ^ String.concat " | " (List.map (fun (n,t) -> string_of_int n ^ " => " ^ string_of_term l (t :> nf)) !bs) ^ "] " ^
String.concat " " (List.map (string_of_term l) (args :> nf list)) ^ ")"
and string_of_term_no_pars_app lev l = function
| `N _ as x -> x
| `Match(t,v,bs_lift,bs,args) ->
let bs_lift = bs_lift + if delift_by_one then -1 else 0 in
- (* let l' = l - bs_lift in *)
- (* let with_what' = lift l' (with_what :> nf) in *)
+ (* Warning! It now applies again the substitution in branches of matches.
+ But careful, it does it many times, for every occurrence of
+ the match. This is okay because what does not occur in with_what. *)
+ let l' = l - bs_lift in
+ let with_what' = lift l' (with_what :> nf) in
(* The following line should be the identity when delift_by_one = true because we
are assuming the ts to not contain lambda-bound variables. *)
- (* bs := List.map (fun (n,t) -> n,subst truelam false what with_what' t) !bs ; *)
+ bs := List.map (fun (n,t) -> n,subst truelam false what with_what' t) !bs ;
let body = cast_to_i_num_var (aux_i_num_var l t) in
- mk_match body v bs_lift bs (List.map (aux l) args)
+ mk_match body v bs_lift bs (List.map (aux l) (args :> nf list))
and aux l(*lift*) =
(*function iii -> let res = match iii with*)
function