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define-match-expander

 (require mzlib/plt-match)

NOTE: This library is deprecated. Use racket/match instead.

The mzlib/plt-match library mostly re-provides scheme/match.

syntax

(define-match-expander id proc-expr)

(define-match-expander id proc-expr proc-expr)
(define-match-expander id proc-expr proc-expr proc-expr)
The same as the form from mzlib/match.