sig
val from_gen : char Gen.t -> Sedlexing.lexbuf
val from_channel : Stdlib.in_channel -> Sedlexing.lexbuf
val from_string : string -> Sedlexing.lexbuf
val lexeme : Sedlexing.lexbuf -> string
val sub_lexeme : Sedlexing.lexbuf -> int -> int -> string
val lexeme_char : Sedlexing.lexbuf -> int -> char
end