Synch with Gnus trunk.

2010-06-07  Teodor Zlatanov  <tzz@lifelogs.com>
 * gnus.texi (Interactive): Explain effect of gnus-expert-user better.

2010-06-07  Teemu Likonen  <tlikonen@iki.fi>  (tiny change)
 * gnus-agent.el (gnus-agent-expire-unagentized-dirs): Don't ask about
 deleting unused directories when gnus-expert-user is t.

doc/misc/ChangeLog

@@ -1,3 +1,7 @@
+2010-06-07  Teodor Zlatanov  <tzz@lifelogs.com>
+
+	* gnus.texi (Interactive): Explain effect of gnus-expert-user better.
+
 2010-05-26  Michael Albinus  <michael.albinus@gmx.de>
 
 	* eshell.texi (Built-ins): Describe, how to disable a built-in command

doc/misc/gnus.texi

@@ -22906,8 +22906,11 @@ default.
 @item gnus-expert-user
 @vindex gnus-expert-user
 If this variable is non-@code{nil}, you will seldom be asked any
-questions by Gnus.  It will simply assume you know what you're doing, no
-matter how strange.
+questions by Gnus.  It will simply assume you know what you're doing,
+no matter how strange.  For example, quitting Gnus, exiting a group
+without an update, catching up with a group, deleting expired
+articles, and replying by mail to a news message will not require
+confirmation.
 
 @item gnus-interactive-catchup
 @vindex gnus-interactive-catchup

lisp/gnus/ChangeLog

@@ -1,3 +1,8 @@
+2010-06-07  Teemu Likonen  <tlikonen@iki.fi>  (tiny change)
+
+	* gnus-agent.el (gnus-agent-expire-unagentized-dirs): Don't ask about
+	deleting unused directories when gnus-expert-user is t.
+
 2010-06-02  Katsumi Yamaoka  <yamaoka@jpl.org>
 
 	* gnus-art.el (gnus-article-browse-delete-temp-files): Don't make query

lisp/gnus/gnus-agent.el

@@ -3634,7 +3634,8 @@ articles in every agentized group? "))
  deleting them?")))
           (while to-remove
             (let ((dir (pop to-remove)))
-              (if (gnus-y-or-n-p (format "Delete %s? " dir))
+              (if (or gnus-expert-user
+		      (gnus-y-or-n-p (format "Delete %s? " dir)))
                   (let* (delete-recursive
 			 files f
                          (delete-recursive