Support pattern directives in define-qi-syntax-rule

[countvajhula]

Summary of Changes

Racket's define-syntax-parse-rule supports #:with and other pattern directives, whereas Qi's analogous define-qi-syntax-rule did not. This adds the support, to bring the interface to parity with Racket.

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[michaelballantyne]

syntax-parse is smart enough that you don't need to do all that work! Just match like:

(define-syntax define-qi-syntax-rule
  (syntax-parser
    [(_ (name . pat) dirs ... tmpl)
     #'(define-dsl-syntax name qi-macro
         (syntax-parser
           [(_ . pat)
            dirs ...
            #'tmpl]))]))

[countvajhula]

@michaelballantyne Oh, fantastic. Updated!

[countvajhula]

Merging. Thanks for the review, folks!