try
  let ic = open_in Sys.argv.(1) in
  let term = Parser.parse_term (Stream.of_channel ic) in
  close_in ic;
  print_endline (Pp.pp_term term)
with Stdpp.Exc_located ((p_start, p_end), exn) ->
  prerr_endline (Printf.sprintf "Exception at character %d-%d: %s"
		   p_start p_end (Printexc.to_string exn))

(* print_endline (Macro.expand "def") *)

(* Printf.printf "'%s'\n" (Macro.expand Sys.argv.(1)) *)