X-Git-Url: http://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fgnus-compat.el;h=3241cd1ae22931e067340a50edb78e7fa04257bf;hb=2df323a009ddd334ef992f32b7a8441daa6b6256;hp=130748853e68d3a8ef78389f2fe774f64f75ed41;hpb=28ac71eb9f37da5a6193a8e4dab61ab06b17f466;p=gnus

diff --git a/lisp/gnus-compat.el b/lisp/gnus-compat.el
index 130748853..3241cd1ae 100644
--- a/lisp/gnus-compat.el
+++ b/lisp/gnus-compat.el
@@ -97,6 +97,31 @@ TRASH is ignored."
 			   (lambda (process status)
 			     (apply function process status args))))))
 
+;; XEmacs 21.4
+(unless (fboundp 'bound-and-true-p)
+  (defmacro bound-and-true-p (var)
+    "Return the value of symbol VAR if it is bound, else nil."
+    (and (boundp var)
+	 (symbol-value var))))
+
+
+;; Emacs less than 24.3
+(unless (fboundp 'add-face)
+  (defun add-face (beg end face)
+    "Combine FACE BEG and END."
+    (let ((b beg))
+      (while (< b end)
+	(let ((oldval (get-text-property b 'face)))
+	  (put-text-property
+	   b (setq b (next-single-property-change b 'face nil end))
+	   'face (cond ((null oldval)
+			face)
+		       ((and (consp oldval)
+			     (not (keywordp (car oldval))))
+			(cons face oldval))
+		       (t
+			(list face oldval)))))))))
+
 (provide 'gnus-compat)
 
 ;; gnus-compat.el ends here