Better fix for headers decoding problem: fetch them as raw and let rcube_mime::decode_address_list() do the job right

program/steps/mail/compose.inc

@@ -415,19 +415,17 @@ foreach ($parts as $header) {
   else if (in_array($compose_mode, array(RCUBE_COMPOSE_DRAFT, RCUBE_COMPOSE_EDIT))) {
     // get drafted headers
     if ($header=='to' && !empty($MESSAGE->headers->to))
-      $fvalue = $MESSAGE->get_header('to');
+      $fvalue = $MESSAGE->get_header('to', true);
     else if ($header=='cc' && !empty($MESSAGE->headers->cc))
-      $fvalue = $MESSAGE->get_header('cc');
+      $fvalue = $MESSAGE->get_header('cc', true);
     else if ($header=='bcc' && !empty($MESSAGE->headers->bcc))
-      $fvalue = $MESSAGE->get_header('bcc');
+      $fvalue = $MESSAGE->get_header('bcc', true);
     else if ($header=='replyto' && !empty($MESSAGE->headers->others['mail-reply-to']))
       $fvalue = $MESSAGE->get_header('mail-reply-to');
     else if ($header=='replyto' && !empty($MESSAGE->headers->replyto))
       $fvalue = $MESSAGE->get_header('reply-to');
     else if ($header=='followupto' && !empty($MESSAGE->headers->others['mail-followup-to']))
       $fvalue = $MESSAGE->get_header('mail-followup-to');
-
-    $decode_header = false;  // $MESSAGE->get_header() returns already decoded header values
   }
 
   // split recipients and put them back together in a unique way