Tls.Utils
module List_set : sig ... end
val map_find : f:('a -> 'b option) -> 'c list -> 'd option
val init_and_last : 'a list -> ('b list * 'c) option
val first_match : 'a list -> 'b list -> 'c option
val sub_equal : off:int -> len:int -> string -> string -> bool