> (with-syntax ((parsed-evaluated-args > (datum->syntax #f (cons 'list > (optimizer-parse-square-brackets-arguments-lister > (syntax->datum > #'args-brackets))))))
That should work, but it's also non-hygienic. For example, it will be affected if the user does (let ((list ...)) (call-your-macro ...)) and since you use #f in the datum->syntax call, it will also strip away all hygiene annotations from the args-brackets, causing problems inside that as well. I'd advise you refactor your optimizer-parse-square-brackets-arguments-lister function so that it takes #'args-brackets instead of (syntax->datum #'args-brackets) and works with it in a hygienic way.
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