X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/d76bf86f438d4f5f9fe493ab76f02ffc78f3ae2e..b4fbd69b66a927ad8ff479bee6ca57e977d7e649:/lisp/mh-e/mh-thread.el?ds=sidebyside

diff --git a/lisp/mh-e/mh-thread.el b/lisp/mh-e/mh-thread.el
index d80e9f3ae5..5135e7e88f 100644
--- a/lisp/mh-e/mh-thread.el
+++ b/lisp/mh-e/mh-thread.el
@@ -1,6 +1,6 @@
 ;;; mh-thread.el --- MH-E threading support
 
-;; Copyright (C) 2002-2004, 2006-2013 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2004, 2006-2016 Free Software Foundation, Inc.
 
 ;; Author: Satyaki Das <satyaki@theforce.stanford.edu>
 ;; Maintainer: Bill Wohler <wohler@newt.com>
@@ -27,9 +27,11 @@
 ;; The threading portion of this files tries to implement the
 ;; algorithm described at:
 ;;   http://www.jwz.org/doc/threading.html
-;; It also begins to implement the IMAP Threading extension RFC. The
-;; implementation lacks the reference and subject canonicalization of
-;; the RFC.
+;; It also begins to implement the threading section of the IMAP -
+;; SORT and THREAD Extensions RFC at:
+;;   http://tools.ietf.org/html/rfc5256
+;; The implementation lacks the reference and subject canonicalization
+;; of the RFC.
 
 ;; In the presentation buffer, children messages are shown indented
 ;; with either [ ] or < > around them. Square brackets ([ ]) denote