+ (fun env loc -> CicNotationFwd.instantiate_level2 env l2));
+ let time2 = Unix.gettimeofday () in
+ print_endline "Extending pretty printer ..."; flush stdout;
+ let time3 = Unix.gettimeofday () in
+ ignore
+ (CicNotationRew.add_pretty_printer ?precedence ?associativity
+ l2 l1);
+ let time4 = Unix.gettimeofday () in
+ printf "done (extending parser took %f, extending pretty printer took %f)\n"
+ (time2 -. time1) (time4 -. time3);
+ flush stdout