Module Rich

type t
val of_string : ?style:Style.t -> string -> t
val to_string : t -> string
val length : t -> int
val edit : t -> Text_edit.t
val runs : t -> (int * int * Style.t) list
val style_at : t -> int -> Style.t
val caret : t -> int
val range : t -> int * int
val at : int -> t -> t
val select : anchor:int -> caret:int -> t -> t
val to_ : int -> t -> t
val insert : string -> t -> t
val delete_backward : t -> t
val delete_forward : t -> t
val restyle : (Style.t -> Style.t) -> t -> t
val typing_style : t -> Style.t