syntax-case

from The Free On-line Dictionary of Computing (8 July 2008)
Syntax-Case

   <language> A {macro} system for {Scheme} by R. Kent Dybvig
   <[email protected]>.  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 (ftp://maya.dei.unipd.it/pub/mac/gambit/).

   ["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)].

   (1992-07-06)