test_basic(): Add a test for "person@dom.ain (User J. Person)" which

was already correctly parsed (contrary to a comment in Mailman).

test_rfc2822_phrases(): RFC 2822 now requires that we allow `.' in
phrases, which means we must accept dots in unquoted realname parts.
Add a test to check the change in rfc822.py 1.58.

Lib/test/test_rfc822.py

@@ -117,6 +117,10 @@ class MessageTestCase(unittest.TestCase):
              ('', 'goit@lip.com'),
              ])
 
+        self.check(
+            'To: person@dom.ain (User J. Person)\n\n',
+            [('User J. Person', 'person@dom.ain')])
+
     def test_twisted(self):
         # This one is just twisted.  I don't know what the proper
         # result should be, but it shouldn't be to infloop, which is
@@ -164,5 +168,13 @@ class MessageTestCase(unittest.TestCase):
             'foo',
             [('', 'guido@[132.151.1.21]')])
 
+    def test_rfc2822_phrases(self):
+        # RFC 2822 (the update to RFC 822) specifies that dots in phrases are
+        # obsolete syntax, which conforming programs MUST recognize but NEVER
+        # generate (see $4.1 Miscellaneous obsolete tokens).  This is a
+        # departure from RFC 822 which did not allow dots in non-quoted
+        # phrases.
+        self.check('To: User J. Person <person@dom.ain>\n\n',
+                   [('User J. Person', 'person@dom.ain')])
 
 test_support.run_unittest(MessageTestCase)