Decode RFC2047 encoded Subject lines for mail replies.

lisp/mh-e/ChangeLog

+2010-05-14  Peter S Galbraith  <psg@debian.org>
+
+	* mh-mime.el (mh-decode-message-subject): New function to decode
+	RFC2047 encoded Subject lines. Used for reply drafts.
+	* mh-comp.el (mh-compose-and-send-mail): Call
+	`mh-decode-message-subject' on (reply or forward) message drafts.
+
 2010-05-07  Chong Yidong  <cyd@stupidchicken.com>
 
 	* Version 23.2 released.

lisp/mh-e/mh-comp.el

@@ -905,6 +905,9 @@ letter."
   (mh-identity-make-menu)
   (mh-identity-add-menu)
 
+  ;; Cleanup possibly RFC2047 encoded subject header
+  (mh-decode-message-subject)
+
   ;; Insert extra fields.
   (mh-insert-x-mailer)
   (mh-insert-x-face)

lisp/mh-e/mh-mime.el

@@ -507,6 +507,15 @@ decoding the same message multiple times."
     (let ((buffer-read-only nil))
       (rfc2047-decode-region (point-min) (mh-mail-header-end)))))
 
+;;;###mh-autoload
+(defun mh-decode-message-subject ()
+  "Decode RFC2047 encoded message header fields."
+  (when mh-decode-mime-flag
+    (save-excursion
+      (let ((buffer-read-only nil))
+        (rfc2047-decode-region (progn (mh-goto-header-field "subject:") (point))
+                               (progn (mh-header-field-end) (point)))))))
+
 ;;;###mh-autoload
 (defun mh-mime-display (&optional pre-dissected-handles)
   "Display (and possibly decode) MIME handles.