Proposal #13: Structure Sharing in Arguments

[Daniel L. Weinreb <DLW@QUABBIN.SCRC.Symbolics.COM>]

    Date: 23 Jul 86 13:03:26 PDT (Wed)
    From: willc%tekchips.tek.csnet@CSNET-RELAY.ARPA

		  in any reasonable implementation the &REST argument will
    have been freshly consed.

That's an extremely odd idea.  The entire reason that we have &REST
arguments at all is to avoid the need for consing the list.  Had we
intended for the list to be freshly consed, we would never have
implemented &REST at all; we'd have just let the caller cons up a list
and pass it as a regular argument.