* lisp/gnus/gnus-start.el (gnus-before-resume-hook): Add.

(gnus-1): Run it when Gnus is alive.

doc/misc/gnus.texi

@@ -1580,6 +1580,10 @@ times you start Gnus.
 @vindex gnus-before-startup-hook
 A hook called as the first thing when Gnus is started.
 
+@item gnus-before-resume-hook
+@vindex gnus-before-resume-hook
+A hook called as the first thing when Gnus is resumed after a suspend.
+
 @item gnus-startup-hook
 @vindex gnus-startup-hook
 A hook run as the very last thing after starting up Gnus

lisp/gnus/ChangeLog

+2012-12-06  Sam Steingold  <sds@gnu.org>
+
+	* gnus-start.el (gnus-before-resume-hook): Add.
+	(gnus-1): Run it when Gnus is alive.
+
 2012-12-06  Katsumi Yamaoka  <yamaoka@jpl.org>
 
 	* gmm-utils.el (gmm-called-interactively-p): Restore as a macro.

lisp/gnus/gnus-start.el

@@ -395,7 +395,15 @@ This hook is called after Gnus is connected to the NNTP server."
 
 (defcustom gnus-before-startup-hook nil
   "A hook called before startup.
-This hook is called as the first thing when Gnus is started."
+This hook is called as the first thing when Gnus is started.
+See also `gnus-before-resume-hook'."
+  :group 'gnus-start
+  :type 'hook)
+
+(defcustom gnus-before-resume-hook nil
+  "A hook called before resuming Gnus after suspend.
+This hook is called as the first thing when Gnus is resumed after a suspend.
+See also `gnus-before-startup-hook'."
   :group 'gnus-start
   :type 'hook)
 
@@ -749,6 +757,7 @@ prompt the user for the name of an NNTP server to use."
 
   (if (gnus-alive-p)
       (progn
+	(gnus-run-hooks 'gnus-before-resume-hook)
 	(switch-to-buffer gnus-group-buffer)
 	(gnus-group-get-new-news
 	 (and (numberp arg)