Fixed RFC-2045 quoted-printable bug [#1421 state:committed]

http://www.faqs.org/rfcs/rfc2045.html says:

          may be
          represented by an "=" followed by a two digit
          hexadecimal representation of the octet's value.  The
          digits of the hexadecimal alphabet, for this purpose,
          are "0123456789ABCDEF".  Uppercase letters must be
          used; lowercase letters are not allowed.

ActionMailer, however, used "=%02x" specification.
Signed-off-by: NDavid Heinemeier Hansson <david@loudthinking.com>

actionmailer/CHANGELOG

 *2.3.0 [Edge]*
 
+* Fixed RFC-2045 quoted-printable bug #1421 [squadette]
+
 * Fixed that no body charset would be set when there are attachments present #740 [Paweł Kondzior]
 
 

actionmailer/lib/action_mailer/quoting.rb

@@ -12,7 +12,7 @@ def quoted_printable(text, charset)
     # account multi-byte characters (if executing with $KCODE="u", for instance)
     def quoted_printable_encode(character)
       result = ""
-      character.each_byte { |b| result << "=%02x" % b }
+      character.each_byte { |b| result << "=%02X" % b }
       result
     end
 

actionmailer/test/test_helper_test.rb

@@ -36,7 +36,7 @@ def test_charset_is_utf_8
   end
 
   def test_encode
-    assert_equal "=?utf-8?Q?=0aasdf=0a?=", encode("\nasdf\n")
+    assert_equal "=?utf-8?Q?=0Aasdf=0A?=", encode("\nasdf\n")
   end
 
   def test_assert_emails