If you don't want to allow ellipses, this will work: (~seq-no-order _pats ...) == (~seq (~or (~once _pats) ...))
Here _pats and ... are meta, not part of the syntax-parse syntax. If you do want ellipses, then you'll have to do some parsing yourself to determine which patterns shouldn't be wrapped in ~once. However, you have to use someone's experimental syntax-parse branch that has support for "pattern expanders." -Ian ----- Original Message ----- From: "Alexander D. Knauth" <alexan...@knauth.org> To: "racket users list" <users@racket-lang.org> Sent: Sunday, July 20, 2014 5:23:42 PM GMT -05:00 US/Canada Eastern Subject: [racket] Is there anything like a "~seq-no-order" pattern for syntax/parse ? Is there anything like a "~seq-no-order" pattern for syntax/parse ? ____________________ Racket Users list: http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
