status: withdrawn (2022-07-23)
keywords: Pattern Matching
This SRFI discusses some of the existing pattern-matching
libraries for the Scheme programming language — namely,
the pattern matcher presented by Andrew K. Wright and Robert
Cartwright in the paper "A Soft Type System for Scheme", the
pattern matcher developed by Dan Friedman, Erik Hilsdale and
Kent Dybvig, the
distributed with the Racket programming environment, as well
as the Bigloo and Gerbil pattern matchers distributed with
their respective implementations.
It then extracts a pattern syntax which is compatible with three of
those implementations and provides extrinsic rationale for that
It also provides a simple implementation of a pattern matcher
which conforms to the specification of a pattern language provided
in this document.