A
macro system for
Scheme by R. Kent Dybvig
<dyb@cs.indiana.edu>. It is superior to the low-level system
described in the Revised^4 Report (
R4RS). Pattern variables
are ordinary identifiers with essentially the same status as
lexical variable names and
macro keywords. The
syntax
is modified to recognise and handle references to pattern
variables. Version 2.1 works with Chez Scheme and the
Macintosh port runs under MacGambit 2.0
ftp://iuvax.cs.indiana.edu/pub/scheme/syntax-case.tar.Z.
Macintosh.
["Syntactic Abstraction in Scheme",
Robert Hieb, R. Kent Dybvig and Carl Bruggeman
IUCS TR #355, 6/92 (revised 7/3/92)].
["Writing Hygienic Macros in Scheme with Syntax-Case", R. Kent
Dybvig, IUCS TR #356, 6/92 (revised 7/3/92)].