lisp/gnus/mml2015.el (mml2015-epg-sign): Make sure to insert newline after the...

lisp/gnus/mml2015.el (mml2015-epg-sign): Make sure to insert newline after the signed data to conform the standard (Bug#14232)

lisp/gnus/ChangeLog

+2013-05-22  Daiki Ueno  <ueno@gnu.org>
+
+	* mml2015.el (mml2015-epg-sign): Make sure to insert newline after the
+	signed data to conform the standard.  (Bug#14232)
+
 2013-05-20  Adam Sjøgren  <asjo@koldfront.dk>
 	* gnus-spec.el (gnus-parse-complex-format): Use unicode escape for left

lisp/gnus/mml2015.el

@@ -1085,6 +1085,10 @@ If no one is selected, default secret key is used.  "
 	(epg-context-set-passphrase-callback
 	 context
 	 #'mml2015-epg-passphrase-callback))
+    ;; Signed data must end with a newline (RFC 3156, 5).
+    (goto-char (point-max))
+    (unless (bolp)
+      (insert "\n"))
     (condition-case error
 	(setq signature (epg-sign-string context (buffer-string) t)
 	      mml2015-epg-secret-key-id-list nil)