+>>> testhack.ex in percent_hack_domains?
+>>> list element: !*relay.ex
+>>> list element: !test.ex
+>>> list element: testhack.ex
+>>> testhack.ex in percent_hack_domains? yes (matched "testhack.ex")
+>>> b in percent_hack_domains?
+>>> list element: !*relay.ex
+>>> list element: !test.ex
+>>> list element: testhack.ex
+>>> list element: testdb;defer