val none_pos : string -> Stdlib.Lexing.position
val none : t
val dyn_of_position_no_file : Stdlib.Lexing.position -> Dyn.t
module Map : sig ... end
val none : t
val is_none : t -> bool
val of_lexbuf : Stdlib.Lexing.lexbuf -> t
val dyn_of_position_no_file : Stdlib.Lexing.position -> Dyn.t
val of_pos : (string * int * int * int) -> t
To be used with __POS__
val to_file_colon_line : t -> string
val render : Stdlib.Format.formatter -> tag Pp.t -> unit