✨ Coerce :* search args into sequence-set

Author: nevans

lib/net/imap.rb

@@ -1947,7 +1947,7 @@ def uid_expunge(uid_set)
     #     These types are converted to SequenceSet for validation and encoding:
     #     * +Set+
     #     * +Range+
-    #     * <tt>-1</tt> translates to <tt>*</tt>
+    #     * <tt>-1</tt> and +:*+ -- both translate to <tt>*</tt>
     #     * nested +Array+
     #   * Any +String+ is sent verbatim when it is a valid \IMAP atom,
     #     and encoded as an \IMAP quoted or literal string otherwise.
@@ -3205,7 +3205,7 @@ def normalize_searching_criteria(criteria)
 
     def coerce_search_arg_to_seqset?(obj)
       case obj
-      when Set, -1     then true
+      when Set, -1, :* then true
       when Range       then true
       when Array       then true
       else                  false

test/net/imap/test_imap.rb

@@ -1227,6 +1227,9 @@ def test_unselect
       imap.search(["subject", "hello", Set[1, 2, 3, 4, 5, 8, *(10..100)]])
       assert_equal "subject hello 1:5,8,10:100", server.commands.pop.args
 
+      imap.search([:*])
+      assert_equal "*", server.commands.pop.args
+
       server.on "UID SEARCH", &search_resp
       assert_equal search_result, imap.uid_search(["subject", "hello",
                                                    [1..22, 30..-1]])