Hi Andy, The error on 4.9.0rc1 is likely due to 0a52536, which made `assoc`, `member` et al. signal errors when their second arguments aren't lists instead of just returning #f (or the sentinel value). This is new behavior since 4.7.0, and IIRC there were a couple of places in CHICKEN itself that required updating after this change too, since they were also relying on these cases returning #f.
Anyway, when passed `eqv?` as a comparator *before* importing numbers, `alist-ref` uses CHICKEN's built-in `assq` for the search, including this new behavior. *After* importing numbers, however, you're really passing the numbers extension's version of `eqv?`, which `alist-ref` doesn't take as a signal to use the built-in `assq` and instead falls back to a search function that matches the pre-0a52536 (i.e. 4.7.0) behavior and returns #f/the sentinel value. @ -hackers: I think `alist-ref`'s fallback search function should match the behavior of core's versions. Objections? Evan _______________________________________________ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
