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(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2022 Nomadic Labs <contact@nomadic-labs.com>                *)
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(* copy of this software and associated documentation files (the "Software"),*)
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(*                                                                           *)
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(** [optional_switch "flag" b] is [["--flag"]] if [b] is true, otherwise [[]] *)
val optional_switch : string -> bool -> string list

(** [optional_arg "arg" f opt_v] is [["--arg"; f x]] if [opt_v] is [Some v], otherwise [[]] *)
val optional_arg : string -> ('a -> string) -> 'a option -> string list