Module Arg_type : module type of Arg_type with type 'a t = 'a Arg_type.t


type 'a t = 'a Arg_type.t

the type of a command line argument

val create : ?complete:(Core_kernel.Std.Univ_map.t -> part:string -> string list) -> ?key:'a Core_kernel.Std.Univ_map.Multi.Key.t -> (string -> 'a) -> 'a t

An argument type includes information about how to parse values of that type from the command line, and (optionally) how to auto-complete partial arguments of that type via bash's programmable TAB-completion. In addition to the argument prefix, autocompletion also has access to any previously parsed arguments in the form of a heterogeneous map into which previously parsed arguments may register themselves by providing a Univ_map.Key using the ~key argument to 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.

an auto-completing Arg_type over a finite set of values

val of_alist_exn : ?key:'a Core_kernel.Std.Univ_map.Multi.Key.t -> (string * 'a) list -> 'a t

convenience wrapper for of_map. Raises on duplicate keys

val file : ?key:'a Core_kernel.Std.Univ_map.Multi.Key.t -> (string -> 'a) -> 'a t

file defines an Arg_type.t that completes in the same way as Command.Spec.file, but perhaps with a different type than string or with an autocompletion key.

module Export : sig .. end