[cdr-discuss] CDR-2 -- register-test-designator vs. keyword parameters

Why does genhash use the technique of registering hashing functions and equality predicates instead of using keyword parameters? Both LispWorks and Allegro use keyword parameters so that you can say (make-hash-table :test 'my-equal? :hash-function 'my-hash) http://www.lispworks.com/documentation/lw50/LWRM/html/lwref-86.htm http://www.franz.com/support/documentation/8.0/doc/implementation.htm#cl-mak... I find this more natural and intuitive that having a separate register-test-designator function. The register-test-designator seems too much like "action at a distance". To be fair SBCL has a technique similar to the CDR-2 proposal (see sb-ext::define-hash-table-test). Cheers, Chris Dean