module Arg_type:sig
..end
type 'a
t
val create : ?complete:(Univ_map.t -> part:string -> string list) ->
?key:'a Univ_map.Multi.Key.t -> (string -> 'a) -> 'a t
create
.
If the of_string
function raises an exception, command line parsing will be
aborted and the exception propagated up to top-level and printed along with
command-line help.