(* Copyright (C) 2017 Matthew Fluet. * Copyright (C) 1999-2006 Henry Cejtin, Matthew Fluet, Suresh * Jagannathan, and Stephen Weeks. * * MLton is released under a BSD-style license. * See the file MLton-LICENSE for details. *) structure Exn:> EXN = struct open Exn0 fun layout e = Layout.str (message e) val toString = Layout.toString o layout end