I think Petrofsky's suggestion for handling ellipses (SRFI-46) is far
cleaner that the one in the SRFI-93 draft.  For syntax-rules macros, I
would recommend adopting the SRFI-46 method, or something very similar
to it.  As well as being easier to understand, I believe that the
current proposal would be expressible in Petrofsky's syntax, but that
the converse does not hold.  For syntax-case macros, I think we should
take the opportunity to go all the way with Petrofsky's idea, and make
the ellipsis identifier a required argument to SYNTAX-CASE.

David Feuer