--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/gnus/gnus-srvr.el	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,708 @@
+;;; gnus-srvr.el --- virtual server support for Gnus
+;; Copyright (C) 1995,96 Free Software Foundation, Inc.
+
+;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Keywords: news
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'gnus)
+(eval-when-compile (require 'cl))
+
+(defvar gnus-server-mode-hook nil
+  "Hook run in `gnus-server-mode' buffers.")
+
+(defconst gnus-server-line-format "     {%(%h:%w%)} %s\n"
+  "Format of server lines.
+It works along the same lines as a normal formatting string,
+with some simple extensions.")
+
+(defvar gnus-server-mode-line-format "Gnus  List of servers"
+  "The format specification for the server mode line.")
+
+(defvar gnus-server-exit-hook nil
+  "*Hook run when exiting the server buffer.")
+
+;;; Internal variables.
+
+(defvar gnus-inserted-opened-servers nil)
+
+(defvar gnus-server-line-format-alist
+  `((?h how ?s)
+    (?n name ?s)
+    (?w where ?s)
+    (?s status ?s)))
+
+(defvar gnus-server-mode-line-format-alist 
+  `((?S news-server ?s)
+    (?M news-method ?s)
+    (?u user-defined ?s)))
+
+(defvar gnus-server-line-format-spec nil)
+(defvar gnus-server-mode-line-format-spec nil)
+(defvar gnus-server-killed-servers nil)
+
+(defvar gnus-server-mode-map)
+
+(defvar gnus-server-menu-hook nil
+  "*Hook run after the creation of the server mode menu.")
+
+(defun gnus-server-make-menu-bar ()
+  (gnus-visual-turn-off-edit-menu 'server)
+  (unless (boundp 'gnus-server-server-menu)
+    (easy-menu-define
+     gnus-server-server-menu gnus-server-mode-map ""
+     '("Server"
+       ["Add" gnus-server-add-server t]
+       ["Browse" gnus-server-read-server t]
+       ["List" gnus-server-list-servers t]
+       ["Kill" gnus-server-kill-server t]
+       ["Yank" gnus-server-yank-server t]
+       ["Copy" gnus-server-copy-server t]
+       ["Edit" gnus-server-edit-server t]
+       ["Exit" gnus-server-exit t]
+       ))
+
+    (easy-menu-define
+     gnus-server-connections-menu gnus-server-mode-map ""
+     '("Connections"
+       ["Open" gnus-server-open-server t]
+       ["Close" gnus-server-close-server t]
+       ["Deny" gnus-server-deny-server t]
+       ["Reset" gnus-server-remove-denials t]
+       ))
+
+    (run-hooks 'gnus-server-menu-hook)))
+
+(defvar gnus-server-mode-map nil)
+(put 'gnus-server-mode 'mode-class 'special)
+
+(unless gnus-server-mode-map
+  (setq gnus-server-mode-map (make-sparse-keymap))
+  (suppress-keymap gnus-server-mode-map)
+
+  (gnus-define-keys
+   gnus-server-mode-map
+   " " gnus-server-read-server
+   "\r" gnus-server-read-server
+   gnus-mouse-2 gnus-server-pick-server
+   "q" gnus-server-exit
+   "l" gnus-server-list-servers
+   "k" gnus-server-kill-server
+   "y" gnus-server-yank-server
+   "c" gnus-server-copy-server
+   "a" gnus-server-add-server
+   "e" gnus-server-edit-server
+
+   "O" gnus-server-open-server
+   "C" gnus-server-close-server
+   "D" gnus-server-deny-server
+   "R" gnus-server-remove-denials
+
+    "\C-c\C-i" gnus-info-find-node))
+
+(defun gnus-server-mode ()
+  "Major mode for listing and editing servers.
+
+All normal editing commands are switched off.
+\\<gnus-server-mode-map>
+For more in-depth information on this mode, read the manual 
+(`\\[gnus-info-find-node]'). 
+
+The following commands are available:
+
+\\{gnus-server-mode-map}"
+  (interactive)
+  (when (and menu-bar-mode
+	     (gnus-visual-p 'server-menu 'menu))
+    (gnus-server-make-menu-bar))
+  (kill-all-local-variables)
+  (gnus-simplify-mode-line)
+  (setq major-mode 'gnus-server-mode)
+  (setq mode-name "Server")
+					;  (gnus-group-set-mode-line)
+  (setq mode-line-process nil)
+  (use-local-map gnus-server-mode-map)
+  (buffer-disable-undo (current-buffer))
+  (setq truncate-lines t)
+  (setq buffer-read-only t)
+  (run-hooks 'gnus-server-mode-hook))
+
+(defun gnus-server-insert-server-line (name method)
+  (let* ((how (car method))
+	 (where (nth 1 method))
+	 (elem (assoc method gnus-opened-servers))
+	 (status (cond ((eq (nth 1 elem) 'denied)
+			"(denied)")
+		       ((or (gnus-server-opened method)
+			    (eq (nth 1 elem) 'ok))
+			"(opened)")
+		       (t
+			"(closed)"))))
+    (beginning-of-line)
+    (gnus-add-text-properties
+     (point)
+     (prog1 (1+ (point))
+       ;; Insert the text.
+       (eval gnus-server-line-format-spec))
+     (list 'gnus-server (intern name)))))
+
+(defun gnus-enter-server-buffer ()
+  "Set up the server buffer."
+  (gnus-server-setup-buffer)
+  (gnus-configure-windows 'server)
+  (gnus-server-prepare))
+
+(defun gnus-server-setup-buffer ()
+  "Initialize the server buffer."
+  (unless (get-buffer gnus-server-buffer)
+    (save-excursion
+      (set-buffer (get-buffer-create gnus-server-buffer))
+      (gnus-server-mode)
+      (when gnus-carpal 
+	(gnus-carpal-setup-buffer 'server)))))
+
+(defun gnus-server-prepare ()
+  (setq gnus-server-mode-line-format-spec 
+	(gnus-parse-format gnus-server-mode-line-format 
+			   gnus-server-mode-line-format-alist))
+  (setq gnus-server-line-format-spec 
+	(gnus-parse-format gnus-server-line-format 
+			   gnus-server-line-format-alist t))
+  (let ((alist gnus-server-alist)
+	(buffer-read-only nil)
+	(opened gnus-opened-servers)
+	done server op-ser)
+    (erase-buffer)
+    (setq gnus-inserted-opened-servers nil)
+    ;; First we do the real list of servers.
+    (while alist
+      (push (cdr (setq server (pop alist))) done)
+      (when (and server (car server) (cdr server))
+	(gnus-server-insert-server-line (car server) (cdr server))))
+    ;; Then we insert the list of servers that have been opened in
+    ;; this session.
+    (while opened 
+      (unless (member (caar opened) done)
+	(gnus-server-insert-server-line 
+	 (setq op-ser (format "%s:%s" (caaar opened) (nth 1 (caar opened))))
+	 (caar opened))
+	(push (list op-ser (caar opened)) gnus-inserted-opened-servers))
+      (setq opened (cdr opened))))
+  (goto-char (point-min))
+  (gnus-server-position-point))
+
+(defun gnus-server-server-name ()
+  (let ((server (get-text-property (gnus-point-at-bol) 'gnus-server)))
+    (and server (symbol-name server))))
+
+(defalias 'gnus-server-position-point 'gnus-goto-colon)
+
+(defconst gnus-server-edit-buffer "*Gnus edit server*")
+
+(defun gnus-server-update-server (server)
+  (save-excursion
+    (set-buffer gnus-server-buffer)
+    (let* ((buffer-read-only nil)
+	   (entry (assoc server gnus-server-alist))
+	   (oentry (assoc (gnus-server-to-method server)
+			  gnus-opened-servers)))
+      (when entry
+	(gnus-dribble-enter 
+	 (concat "(gnus-server-set-info \"" server "\" '"
+		 (prin1-to-string (cdr entry)) ")")))
+      (when (or entry oentry)
+	;; Buffer may be narrowed.
+	(save-restriction
+	  (widen)
+	  (when (gnus-server-goto-server server)
+	    (gnus-delete-line))
+	  (if entry
+	      (gnus-server-insert-server-line (car entry) (cdr entry))
+	    (gnus-server-insert-server-line 
+	     (format "%s:%s" (caar oentry) (nth 1 (car oentry)))
+	     (car oentry)))
+	  (gnus-server-position-point))))))
+
+(defun gnus-server-set-info (server info)
+  ;; Enter a select method into the virtual server alist.
+  (when (and server info)
+    (gnus-dribble-enter 
+     (concat "(gnus-server-set-info \"" server "\" '"
+	     (prin1-to-string info) ")"))
+    (let* ((server (nth 1 info))
+	   (entry (assoc server gnus-server-alist)))
+      (if entry (setcdr entry info)
+	(setq gnus-server-alist
+	      (nconc gnus-server-alist (list (cons server info))))))))
+
+;;; Interactive server functions.
+
+(defun gnus-server-kill-server (server)
+  "Kill the server on the current line."
+  (interactive (list (gnus-server-server-name)))
+  (unless (gnus-server-goto-server server)
+    (if server (error "No such server: %s" server)
+      (error "No server on the current line")))
+  (unless (assoc server gnus-server-alist)
+    (error "Read-only server %s" server))
+  (gnus-dribble-enter "")
+  (let ((buffer-read-only nil))
+    (gnus-delete-line))
+  (setq gnus-server-killed-servers 
+	(cons (assoc server gnus-server-alist) gnus-server-killed-servers))
+  (setq gnus-server-alist (delq (car gnus-server-killed-servers)
+				gnus-server-alist))
+  (gnus-server-position-point))
+
+(defun gnus-server-yank-server ()
+  "Yank the previously killed server."
+  (interactive)
+  (or gnus-server-killed-servers
+      (error "No killed servers to be yanked"))
+  (let ((alist gnus-server-alist)
+	(server (gnus-server-server-name))
+	(killed (car gnus-server-killed-servers)))
+    (if (not server) 
+	(setq gnus-server-alist (nconc gnus-server-alist (list killed)))
+      (if (string= server (caar gnus-server-alist))
+	  (setq gnus-server-alist (cons killed gnus-server-alist))
+	(while (and (cdr alist)
+		    (not (string= server (caadr alist))))
+	  (setq alist (cdr alist)))
+	(if alist
+	    (setcdr alist (cons killed (cdr alist)))
+ 	  (setq gnus-server-alist (list killed)))))
+    (gnus-server-update-server (car killed))
+    (setq gnus-server-killed-servers (cdr gnus-server-killed-servers))
+    (gnus-server-position-point)))
+
+(defun gnus-server-exit ()
+  "Return to the group buffer."
+  (interactive)
+  (kill-buffer (current-buffer))
+  (switch-to-buffer gnus-group-buffer)
+  (run-hooks 'gnus-server-exit-hook))
+
+(defun gnus-server-list-servers ()
+  "List all available servers."
+  (interactive)
+  (let ((cur (gnus-server-server-name)))
+    (gnus-server-prepare)
+    (if cur (gnus-server-goto-server cur)
+      (goto-char (point-max))
+      (forward-line -1))
+    (gnus-server-position-point)))
+
+(defun gnus-server-set-status (method status)
+  "Make METHOD have STATUS."
+  (let ((entry (assoc method gnus-opened-servers)))
+    (if entry
+	(setcar (cdr entry) status)
+      (push (list method status) gnus-opened-servers))))
+
+(defun gnus-opened-servers-remove (method)
+  "Remove METHOD from the list of opened servers."
+  (setq gnus-opened-servers (delq (assoc method gnus-opened-servers)
+				  gnus-opened-servers)))
+
+(defun gnus-server-open-server (server)
+  "Force an open of SERVER."
+  (interactive (list (gnus-server-server-name)))
+  (let ((method (gnus-server-to-method server)))
+    (or method (error "No such server: %s" server))
+    (gnus-server-set-status method 'ok)
+    (prog1
+	(or (gnus-open-server method)
+	    (progn (message "Couldn't open %s" server) nil))
+      (gnus-server-update-server server)
+      (gnus-server-position-point))))
+
+(defun gnus-server-close-server (server)
+  "Close SERVER."
+  (interactive (list (gnus-server-server-name)))
+  (let ((method (gnus-server-to-method server)))
+    (or method (error "No such server: %s" server))
+    (gnus-server-set-status method 'closed)
+    (prog1
+	(gnus-close-server method)
+      (gnus-server-update-server server)
+      (gnus-server-position-point))))
+
+(defun gnus-server-deny-server (server)
+  "Make sure SERVER will never be attempted opened."
+  (interactive (list (gnus-server-server-name)))
+  (let ((method (gnus-server-to-method server)))
+    (or method (error "No such server: %s" server))
+    (gnus-server-set-status method 'denied))
+  (gnus-server-update-server server)
+  (gnus-server-position-point)
+  t)
+
+(defun gnus-server-remove-denials ()
+  "Make all denied servers into closed servers."
+  (interactive)
+  (let ((servers gnus-opened-servers))
+    (while servers
+      (when (eq (nth 1 (car servers)) 'denied)
+	(setcar (nthcdr 1 (car servers)) 'closed))
+      (setq servers (cdr servers))))
+  (gnus-server-list-servers))
+
+(defun gnus-server-copy-server (from to)
+  (interactive
+   (list
+    (or (gnus-server-server-name)
+	(error "No server on the current line"))
+    (read-string "Copy to: ")))
+  (or from (error "No server on current line"))
+  (or (and to (not (string= to ""))) (error "No name to copy to"))
+  (and (assoc to gnus-server-alist) (error "%s already exists" to))
+  (or (assoc from gnus-server-alist) 
+      (error "%s: no such server" from))
+  (let ((to-entry (gnus-copy-sequence (assoc from gnus-server-alist))))
+    (setcar to-entry to)
+    (setcar (nthcdr 2 to-entry) to)
+    (setq gnus-server-killed-servers 
+	  (cons to-entry gnus-server-killed-servers))
+    (gnus-server-yank-server)))
+
+(defun gnus-server-add-server (how where)
+  (interactive 
+   (list (intern (completing-read "Server method: "
+				  gnus-valid-select-methods nil t))
+	 (read-string "Server name: ")))
+  (setq gnus-server-killed-servers 
+	(cons (list where how where) gnus-server-killed-servers))
+  (gnus-server-yank-server))
+
+(defun gnus-server-goto-server (server)
+  "Jump to a server line."
+  (interactive
+   (list (completing-read "Goto server: " gnus-server-alist nil t)))
+  (let ((to (text-property-any (point-min) (point-max) 
+			       'gnus-server (intern server))))
+    (and to
+	 (progn
+	   (goto-char to) 
+	   (gnus-server-position-point)))))
+
+(defun gnus-server-edit-server (server)
+  "Edit the server on the current line."
+  (interactive (list (gnus-server-server-name)))
+  (unless server
+    (error "No server on current line"))
+  (unless (assoc server gnus-server-alist)
+    (error "This server can't be edited"))
+  (let ((winconf (current-window-configuration))
+	(info (cdr (assoc server gnus-server-alist))))
+    (gnus-close-server info)
+    (get-buffer-create gnus-server-edit-buffer)
+    (gnus-configure-windows 'edit-server)
+    (gnus-add-current-to-buffer-list)
+    (emacs-lisp-mode)
+    (make-local-variable 'gnus-prev-winconf)
+    (setq gnus-prev-winconf winconf)
+    (use-local-map (copy-keymap (current-local-map)))
+    (let ((done-func '(lambda () 
+			"Exit editing mode and update the information."
+			(interactive)
+			(gnus-server-edit-server-done 'group))))
+      (setcar (cdr (nth 4 done-func)) server)
+      (local-set-key "\C-c\C-c" done-func))
+    (erase-buffer)
+    (insert ";; Type `C-c C-c' after you have edited the server.\n\n")
+    (insert (pp-to-string info))))
+
+(defun gnus-server-edit-server-done (server)
+  (interactive)
+  (set-buffer (get-buffer-create gnus-server-edit-buffer))
+  (goto-char (point-min))
+  (let ((form (read (current-buffer)))
+	(winconf gnus-prev-winconf))
+    (gnus-server-set-info server form)
+    (kill-buffer (current-buffer))
+    (and winconf (set-window-configuration winconf))
+    (set-buffer gnus-server-buffer)
+    (gnus-server-update-server server)
+    (gnus-server-list-servers)
+    (gnus-server-position-point)))
+
+(defun gnus-server-read-server (server)
+  "Browse a server."
+  (interactive (list (gnus-server-server-name)))
+  (let ((buf (current-buffer)))
+    (prog1
+	(gnus-browse-foreign-server (gnus-server-to-method server) buf)
+      (save-excursion
+	(set-buffer buf)
+	(gnus-server-update-server (gnus-server-server-name))
+	(gnus-server-position-point)))))
+    
+(defun gnus-server-pick-server (e)
+  (interactive "e")
+  (mouse-set-point e)
+  (gnus-server-read-server (gnus-server-server-name)))
+
+
+;;;
+;;; Browse Server Mode
+;;;
+
+(defvar gnus-browse-menu-hook nil
+  "*Hook run after the creation of the browse mode menu.")
+
+(defvar gnus-browse-mode-hook nil)
+(defvar gnus-browse-mode-map nil)
+(put 'gnus-browse-mode 'mode-class 'special)
+
+(unless gnus-browse-mode-map
+  (setq gnus-browse-mode-map (make-keymap))
+  (suppress-keymap gnus-browse-mode-map)
+
+  (gnus-define-keys
+   gnus-browse-mode-map
+   " " gnus-browse-read-group
+   "=" gnus-browse-select-group
+   "n" gnus-browse-next-group
+   "p" gnus-browse-prev-group
+   "\177" gnus-browse-prev-group
+   "N" gnus-browse-next-group
+   "P" gnus-browse-prev-group
+   "\M-n" gnus-browse-next-group
+   "\M-p" gnus-browse-prev-group
+   "\r" gnus-browse-select-group
+   "u" gnus-browse-unsubscribe-current-group
+   "l" gnus-browse-exit
+   "L" gnus-browse-exit
+   "q" gnus-browse-exit
+   "Q" gnus-browse-exit
+   "\C-c\C-c" gnus-browse-exit
+   "?" gnus-browse-describe-briefly
+
+   "\C-c\C-i" gnus-info-find-node))
+
+(defun gnus-browse-make-menu-bar ()
+  (gnus-visual-turn-off-edit-menu 'browse)
+  (or
+   (boundp 'gnus-browse-menu)
+   (progn
+     (easy-menu-define
+      gnus-browse-menu gnus-browse-mode-map ""
+      '("Browse"
+	["Subscribe" gnus-browse-unsubscribe-current-group t]
+	["Read" gnus-browse-read-group t]
+	["Select" gnus-browse-read-group t]
+	["Next" gnus-browse-next-group t]
+	["Prev" gnus-browse-next-group t]
+	["Exit" gnus-browse-exit t]
+	))
+      (run-hooks 'gnus-browse-menu-hook))))
+
+(defvar gnus-browse-current-method nil)
+(defvar gnus-browse-return-buffer nil)
+
+(defvar gnus-browse-buffer "*Gnus Browse Server*")
+
+(defun gnus-browse-foreign-server (method &optional return-buffer)
+  "Browse the server METHOD."
+  (setq gnus-browse-current-method method)
+  (setq gnus-browse-return-buffer return-buffer)
+  (let ((gnus-select-method method)
+	groups group)
+    (gnus-message 5 "Connecting to %s..." (nth 1 method))
+    (cond
+     ((not (gnus-check-server method))
+      (gnus-message
+       1 "Unable to contact server: %s" (gnus-status-message method))
+      nil)
+     ((not (gnus-request-list method))
+      (gnus-message
+       1 "Couldn't request list: %s" (gnus-status-message method))
+      nil)
+     (t
+      (get-buffer-create gnus-browse-buffer)
+      (gnus-add-current-to-buffer-list)
+      (and gnus-carpal (gnus-carpal-setup-buffer 'browse))
+      (gnus-configure-windows 'browse)
+      (buffer-disable-undo (current-buffer))
+      (let ((buffer-read-only nil))
+	(erase-buffer))
+      (gnus-browse-mode)
+      (setq mode-line-buffer-identification
+	    (list
+	     (format
+	      "Gnus: %%b {%s:%s}" (car method) (cadr method))))
+      (save-excursion
+	(set-buffer nntp-server-buffer)
+	(let ((cur (current-buffer)))
+	  (goto-char (point-min))
+	  (or (string= gnus-ignored-newsgroups "")
+	      (delete-matching-lines gnus-ignored-newsgroups))
+	  (while (re-search-forward
+		  "\\(^[^ \t]+\\)[ \t]+[0-9]+[ \t]+[0-9]+" nil t)
+	    (goto-char (match-end 1))
+	    (setq groups (cons (cons (match-string 1)
+				     (max 0 (- (1+ (read cur)) (read cur))))
+			       groups)))))
+      (setq groups (sort groups
+			 (lambda (l1 l2)
+			   (string< (car l1) (car l2)))))
+      (let ((buffer-read-only nil))
+	(while groups
+	  (setq group (car groups))
+	  (insert
+	   (format "K%7d: %s\n" (cdr group) (car group)))
+	  (setq groups (cdr groups))))
+      (switch-to-buffer (current-buffer))
+      (goto-char (point-min))
+      (gnus-group-position-point)
+      (gnus-message 5 "Connecting to %s...done" (nth 1 method))
+      t))))
+
+(defun gnus-browse-mode ()
+  "Major mode for browsing a foreign server.
+
+All normal editing commands are switched off.
+
+\\<gnus-browse-mode-map>
+The only things you can do in this buffer is
+
+1) `\\[gnus-browse-unsubscribe-current-group]' to subscribe to a group.
+The group will be inserted into the group buffer upon exit from this
+buffer.
+
+2) `\\[gnus-browse-read-group]' to read a group ephemerally.
+
+3) `\\[gnus-browse-exit]' to return to the group buffer."
+  (interactive)
+  (kill-all-local-variables)
+  (when (and menu-bar-mode
+	     (gnus-visual-p 'browse-menu 'menu))
+    (gnus-browse-make-menu-bar))
+  (gnus-simplify-mode-line)
+  (setq major-mode 'gnus-browse-mode)
+  (setq mode-name "Browse Server")
+  (setq mode-line-process nil)
+  (use-local-map gnus-browse-mode-map)
+  (buffer-disable-undo (current-buffer))
+  (setq truncate-lines t)
+  (setq buffer-read-only t)
+  (run-hooks 'gnus-browse-mode-hook))
+
+(defun gnus-browse-read-group (&optional no-article)
+  "Enter the group at the current line."
+  (interactive)
+  (let ((group (gnus-browse-group-name)))
+    (or (gnus-group-read-ephemeral-group
+	 group gnus-browse-current-method nil
+	 (cons (current-buffer) 'browse))
+	(error "Couldn't enter %s" group))))
+
+(defun gnus-browse-select-group ()
+  "Select the current group."
+  (interactive)
+  (gnus-browse-read-group 'no))
+
+(defun gnus-browse-next-group (n)
+  "Go to the next group."
+  (interactive "p")
+  (prog1
+      (forward-line n)
+    (gnus-group-position-point)))
+
+(defun gnus-browse-prev-group (n)
+  "Go to the next group."
+  (interactive "p")
+  (gnus-browse-next-group (- n)))
+
+(defun gnus-browse-unsubscribe-current-group (arg)
+  "(Un)subscribe to the next ARG groups."
+  (interactive "p")
+  (when (eobp)
+    (error "No group at current line."))
+  (let ((ward (if (< arg 0) -1 1))
+	(arg (abs arg)))
+    (while (and (> arg 0)
+		(not (eobp))
+		(gnus-browse-unsubscribe-group)
+		(zerop (gnus-browse-next-group ward)))
+      (decf arg))
+    (gnus-group-position-point)
+    (if (/= 0 arg) (gnus-message 7 "No more newsgroups"))
+    arg))
+
+(defun gnus-browse-group-name ()
+  (save-excursion
+    (beginning-of-line)
+    (when (re-search-forward ": \\(.*\\)$" (gnus-point-at-eol) t)
+      (gnus-group-prefixed-name (match-string 1) gnus-browse-current-method))))
+
+(defun gnus-browse-unsubscribe-group ()
+  "Toggle subscription of the current group in the browse buffer."
+  (let ((sub nil)
+	(buffer-read-only nil)
+	group)
+    (save-excursion
+      (beginning-of-line)
+      ;; If this group it killed, then we want to subscribe it.
+      (if (= (following-char) ?K) (setq sub t))
+      (setq group (gnus-browse-group-name))
+      (delete-char 1)
+      (if sub
+	  (progn
+	    (gnus-group-change-level
+	     (list t group gnus-level-default-subscribed
+		   nil nil gnus-browse-current-method)
+	     gnus-level-default-subscribed gnus-level-killed
+	     (and (car (nth 1 gnus-newsrc-alist))
+		  (gnus-gethash (car (nth 1 gnus-newsrc-alist))
+				gnus-newsrc-hashtb))
+	     t)
+	    (insert ? ))
+	(gnus-group-change-level
+	 group gnus-level-killed gnus-level-default-subscribed)
+	(insert ?K)))
+    t))
+
+(defun gnus-browse-exit ()
+  "Quit browsing and return to the group buffer."
+  (interactive)
+  (when (eq major-mode 'gnus-browse-mode)
+    (kill-buffer (current-buffer)))
+  ;; Insert the newly subscribed groups in the group buffer.
+  (save-excursion
+    (set-buffer gnus-group-buffer)
+    (gnus-group-list-groups nil))
+  (if gnus-browse-return-buffer
+      (gnus-configure-windows 'server 'force)
+    (gnus-configure-windows 'group 'force)))
+
+(defun gnus-browse-describe-briefly ()
+  "Give a one line description of the group mode commands."
+  (interactive)
+  (gnus-message 6
+		(substitute-command-keys "\\<gnus-browse-mode-map>\\[gnus-group-next-group]:Forward  \\[gnus-group-prev-group]:Backward  \\[gnus-browse-exit]:Exit  \\[gnus-info-find-node]:Run Info  \\[gnus-browse-describe-briefly]:This help")))
+
+(provide 'gnus-srvr)
+
+;;; gnus-srvr.el ends here.