https://github.com/plt/racket/issues/562
takikawa helped reduce the reproduction down to: (match '(1 1) [(list-no-order b b) 'x]) but what I'm actually trying to do is: (match '(... (nand b b w1) ... (nand w1 w1 w2) ...) [(list-no-order `(nand ,a ,a ,b) `(nand ,b ,b ,c) rest ...) <rewrite c to a in rest>] [else 'bad]) I'm assuming that this bug is legit, but I know that match is incredibly powerful and assume some sort of workaround for this problem exists. Or there is the possibility of another tool that I don't yet know about. I just want to get this project off the ground to show that it can work. Suggestions / workarounds welcome. Thanks. ____________________ Racket Users list: http://lists.racket-lang.org/users