(detach list element tail)                       (detach -r list element tail)
(detach list element _)                          (detach -r list element _)
(detach list .)                                  (detach -r list .)

(detach list key + value tail)                   (detach -r list key + value tail)
(detach list key + value _)                      (detach -r list key + value _)
(detach list .)                                  (detach -r list .)   

