module Update:sig..end
type t = 
| | 
Data of  | 
(* | Data string contains a chunk of data from the file.  If break_on_lines, then
      data will be a single line (without the terminating newline). | *) | 
| | 
Warning of  | 
(* | Warnings do not close the stream and whatever is reading can keep on doing so.
      The string is the file name. | *) | 
| | 
Error of  | 
(* | Errors cause the stream to be closed.  The string is the file name. | *) | 
val to_string_hum : t -> string
val sexp_of_t : t -> Sexplib.Sexp.tstring is the file name.