X-Git-Url: http://cgit.sxemacs.org/?p=gnus;a=blobdiff_plain;f=lisp%2Fgnus-compat.el;h=b96a6acd547cab1c27795fdacb70bec7e10d5ef8;hp=4e9b970025eab4e9343c2ea83597273026a745d4;hb=d588ae3db11ee057d2fc3dfa5364dcfe3f84e368;hpb=3107075e84653c5f05cf94353595a66bbf8cd768

diff --git a/lisp/gnus-compat.el b/lisp/gnus-compat.el
index 4e9b97002..b96a6acd5 100644
--- a/lisp/gnus-compat.el
+++ b/lisp/gnus-compat.el
@@ -1,6 +1,6 @@
 ;;; gnus-compat.el --- Compatability functions for Gnus
 
-;; Copyright (C) 2012 Free Software Foundation, Inc.
+;; Copyright (C) 2012-2015 Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; Keywords: compat
@@ -129,10 +129,39 @@ TRASH is ignored."
       (forward-line arg))
     (beginning-of-line)))
 
-;; XEmacs 21.5
-(unless (fboundp 'set-buffer-multibyte)
-  (defun set-buffer-multibyte (flag)
-    nil))
+(unless (fboundp 'delete-dups)
+  (defun delete-dups (list)
+    "Destructively remove `equal' duplicates from LIST.
+Store the result in LIST and return it.  LIST must be a proper list.
+Of several `equal' occurrences of an element in LIST, the first
+one is kept."
+    (let ((tail list))
+      (while tail
+	(setcdr tail (delete (car tail) (cdr tail)))
+	(setq tail (cdr tail))))
+    list))
+
+(unless (fboundp 'declare-function)
+  (defmacro declare-function (&rest r)))
+
+(unless (fboundp 'string-bytes)
+  (defun string-bytes (string)
+    (length (if (or (mm-coding-system-p 'utf-8)
+		    (ignore-errors
+		      (let (mucs-ignore-version-incompatibilities)
+			(require 'un-define))))
+		(mm-encode-coding-string string 'utf-8)
+	      string))))
+
+(unless (fboundp 'process-live-p)
+  (defun process-live-p (process)
+    "Returns non-nil if PROCESS is alive.
+A process is considered alive if its status is `run', `open',
+`listen', `connect' or `stop'.  Value is nil if PROCESS is not a
+process."
+    (and (processp process)
+	 (memq (process-status process)
+	       '(run open listen connect stop)))))
 
 (provide 'gnus-compat)