described in the Revised^4 Report (
R4RS). Pattern variables
are ordinary identifiers with essentially the same status as
is modified to recognise and handle references to pattern
["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)