#18431: Decode encoded words in atoms in new email parser.

There is more to be done here in terms of accepting RFC invalid
input that some mailers accept, but this covers the valid
RFC places where encoded words can occur in structured headers.
diff --git a/Lib/test/test_email/test__header_value_parser.py b/Lib/test/test_email/test__header_value_parser.py
index 8917447..646082b 100644
--- a/Lib/test/test_email/test__header_value_parser.py
+++ b/Lib/test/test_email/test__header_value_parser.py
@@ -808,9 +808,13 @@
         self.assertEqual(atom[2].comments, ['bar'])
 
     def test_get_atom_atom_ends_at_noncfws(self):
-        atom = self._test_get_x(parser.get_atom,
+        self._test_get_x(parser.get_atom,
             'bob  fred', 'bob  ', 'bob ', [], 'fred')
 
+    def test_get_atom_rfc2047_atom(self):
+        self._test_get_x(parser.get_atom,
+            '=?utf-8?q?=20bob?=', ' bob', ' bob', [], '')
+
     # get_dot_atom_text
 
     def test_get_dot_atom_text(self):
@@ -885,6 +889,10 @@
         with self.assertRaises(errors.HeaderParseError):
             parser.get_dot_atom(' (foo) bar.bang. foo')
 
+    def test_get_dot_atom_rfc2047_atom(self):
+        self._test_get_x(parser.get_dot_atom,
+            '=?utf-8?q?=20bob?=', ' bob', ' bob', [], '')
+
     # get_word (if this were black box we'd repeat all the qs/atom tests)
 
     def test_get_word_atom_yields_atom(self):
@@ -2156,6 +2164,22 @@
         self.assertEqual(address[0].token_type,
                          'mailbox')
 
+    def test_get_address_rfc2047_display_name(self):
+        address = self._test_get_x(parser.get_address,
+            '=?utf-8?q?=C3=89ric?= <foo@example.com>',
+            'Éric <foo@example.com>',
+            'Éric <foo@example.com>',
+            [],
+            '')
+        self.assertEqual(address.token_type, 'address')
+        self.assertEqual(len(address.mailboxes), 1)
+        self.assertEqual(address.mailboxes,
+                         address.all_mailboxes)
+        self.assertEqual(address.mailboxes[0].display_name,
+                         'Éric')
+        self.assertEqual(address[0].token_type,
+                         'mailbox')
+
     def test_get_address_empty_group(self):
         address = self._test_get_x(parser.get_address,
             'Monty Python:;',