module Readline:Interactive line editing.sig..end
This implements very basic readline abilities: backspace, left and right
arrows work as expected.
There's also a history that can be browsed through the up and down arrows.
typecompleter =left:string -> right:string -> string list
module History:sig..end
val input_line : ?history:History.t ->
?prompt:string -> ?tab_completion:completer -> unit -> string