A few random I/O proposals

[Scott L. Burson <gyro@drums.reasoning.com>]

   Date: Thu, 28 May 92 13:27:10 EDT
   From: Marc Feeley <feeley@iro.umontreal.ca>

   A versatile error system can be added to Scheme with minimal extra machinery.

Sounds good to me!

   3) a convention for passing information from the error point to the error
      handler.  I suggest that the error handler accepts a single argument
      which is the error descriptor (a symbol for now).

How about a list whose car is a symbol -- makes it easier to include additional
information with particular kinds of errors.

Even more general would be a list of such lists -- this gives the same power as
an error-object system using error classes with multiple inheritance.  Is this
excessive for our purposes?

-- Scott