LTerm_history

`sig type t val create : ?max_size:int -> ?max_entries:int -> Zed_utf8.t list -> LTerm_history.t val add : LTerm_history.t -> ?skip_empty:bool -> ?skip_dup:bool -> Zed_utf8.t -> unit val contents : LTerm_history.t -> Zed_utf8.t list val size : LTerm_history.t -> int val length : LTerm_history.t -> int val old_count : LTerm_history.t -> int val set_old_count : LTerm_history.t -> int -> unit val max_size : LTerm_history.t -> int val set_max_size : LTerm_history.t -> int -> unit val max_entries : LTerm_history.t -> int val set_max_entries : LTerm_history.t -> int -> unit val load : LTerm_history.t -> ?log:(int -> string -> unit) -> ?skip_empty:bool -> ?skip_dup:bool -> string -> unit Lwt.t val save : LTerm_history.t -> ?max_size:int -> ?max_entries:int -> ?skip_empty:bool -> ?skip_dup:bool -> ?append:bool -> ?perm:int -> string -> unit Lwt.t val entry_size : Zed_utf8.t -> int end`