# Module Extended_exn

    module Extended_exn: sig .. end

Extensions to `Core.Exn`.

    val to_string : exn -> string

The `to_string` function is slightly tweaked to avoid escaping the string content of `Failure`.

    val to_string_hum : exn -> string

This is also an ever so slight variation of `to_string` target more at user than developers (`Failure s` is just printed as `s`)

    val unwrap : exn -> exn

`unwrap e`

Tries to unwrap an exception to find the original cause of the error (Finally for instance has the propency to burry exception...). This is useful when matching on exceptions.

    module Exn_string: sig .. end

The point of this module is to be able to include an exn in a type that has to be sexpable or binable.