--- /dev/null
+;;; gnus-ml.el --- Mailing list minor mode for Gnus
+
+;; Copyright (C) 2000-2016 Free Software Foundation, Inc.
+
+;; Author: Julien Gilles <jgilles@free.fr>
+;; Keywords: news, mail
+
+;; 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; implement (small subset of) RFC 2369
+
+;;; Code:
+
+(require 'gnus)
+(require 'gnus-msg)
+(eval-when-compile (require 'cl))
+(eval-when-compile
+ (when (featurep 'xemacs)
+ (require 'easy-mmode))) ; for `define-minor-mode'
+
+;;; Mailing list minor mode
+
+(defvar gnus-mailing-list-mode-map
+ (let ((map (make-sparse-keymap)))
+ (gnus-define-keys map
+ "\C-c\C-nh" gnus-mailing-list-help
+ "\C-c\C-ns" gnus-mailing-list-subscribe
+ "\C-c\C-nu" gnus-mailing-list-unsubscribe
+ "\C-c\C-np" gnus-mailing-list-post
+ "\C-c\C-no" gnus-mailing-list-owner
+ "\C-c\C-na" gnus-mailing-list-archive)
+ map))
+
+(defvar gnus-mailing-list-menu)
+
+(defun gnus-mailing-list-make-menu-bar ()
+ (unless (boundp 'gnus-mailing-list-menu)
+ (easy-menu-define
+ gnus-mailing-list-menu gnus-mailing-list-mode-map ""
+ '("Mailing-Lists"
+ ["Get help" gnus-mailing-list-help t]
+ ["Subscribe" gnus-mailing-list-subscribe t]
+ ["Unsubscribe" gnus-mailing-list-unsubscribe t]
+ ["Post a message" gnus-mailing-list-post t]
+ ["Mail to owner" gnus-mailing-list-owner t]
+ ["Browse archive" gnus-mailing-list-archive t]))))
+
+;;;###autoload
+(defun turn-on-gnus-mailing-list-mode ()
+ (when (gnus-group-find-parameter gnus-newsgroup-name 'to-list)
+ (gnus-mailing-list-mode 1)))
+
+;;;###autoload
+(defun gnus-mailing-list-insinuate (&optional force)
+ "Setup group parameters from List-Post header.
+If FORCE is non-nil, replace the old ones."
+ (interactive "P")
+ (let ((list-post
+ (with-current-buffer gnus-original-article-buffer
+ (gnus-fetch-field "list-post"))))
+ (if list-post
+ (if (and (not force)
+ (gnus-group-get-parameter gnus-newsgroup-name 'to-list))
+ (gnus-message 1 "to-list is non-nil.")
+ (if (string-match "<mailto:\\([^>]*\\)>" list-post)
+ (setq list-post (match-string 1 list-post)))
+ (gnus-group-add-parameter gnus-newsgroup-name
+ (cons 'to-list list-post))
+ (gnus-mailing-list-mode 1))
+ (gnus-message 1 "no list-post in this message."))))
+
+(eval-when-compile
+ (when (featurep 'xemacs)
+ (defvar gnus-mailing-list-mode-hook)
+ (defvar gnus-mailing-list-mode-on-hook)
+ (defvar gnus-mailing-list-mode-off-hook)))
+
+;;;###autoload
+(define-minor-mode gnus-mailing-list-mode
+ "Minor mode for providing mailing-list commands.
+
+\\{gnus-mailing-list-mode-map}"
+ :lighter " Mailing-List"
+ :keymap gnus-mailing-list-mode-map
+ (cond
+ ((not (derived-mode-p 'gnus-summary-mode))
+ (setq gnus-mailing-list-mode nil))
+ (gnus-mailing-list-mode
+ ;; Set up the menu.
+ (when (gnus-visual-p 'mailing-list-menu 'menu)
+ (gnus-mailing-list-make-menu-bar)))))
+
+;;; Commands
+
+(defun gnus-mailing-list-help ()
+ "Get help from mailing list server."
+ (interactive)
+ (let ((list-help
+ (with-current-buffer gnus-original-article-buffer
+ (gnus-fetch-field "list-help"))))
+ (cond (list-help (gnus-mailing-list-message list-help))
+ (t (gnus-message 1 "no list-help in this group")))))
+
+(defun gnus-mailing-list-subscribe ()
+ "Subscribe to mailing list."
+ (interactive)
+ (let ((list-subscribe
+ (with-current-buffer gnus-original-article-buffer
+ (gnus-fetch-field "list-subscribe"))))
+ (cond (list-subscribe (gnus-mailing-list-message list-subscribe))
+ (t (gnus-message 1 "no list-subscribe in this group")))))
+
+(defun gnus-mailing-list-unsubscribe ()
+ "Unsubscribe from mailing list."
+ (interactive)
+ (let ((list-unsubscribe
+ (with-current-buffer gnus-original-article-buffer
+ (gnus-fetch-field "list-unsubscribe"))))
+ (cond (list-unsubscribe (gnus-mailing-list-message list-unsubscribe))
+ (t (gnus-message 1 "no list-unsubscribe in this group")))))
+
+(defun gnus-mailing-list-post ()
+ "Post message (really useful ?)"
+ (interactive)
+ (let ((list-post
+ (with-current-buffer gnus-original-article-buffer
+ (gnus-fetch-field "list-post"))))
+ (cond (list-post (gnus-mailing-list-message list-post))
+ (t (gnus-message 1 "no list-post in this group")))))
+
+(defun gnus-mailing-list-owner ()
+ "Mail to the mailing list owner."
+ (interactive)
+ (let ((list-owner
+ (with-current-buffer gnus-original-article-buffer
+ (gnus-fetch-field "list-owner"))))
+ (cond (list-owner (gnus-mailing-list-message list-owner))
+ (t (gnus-message 1 "no list-owner in this group")))))
+
+(defun gnus-mailing-list-archive ()
+ "Browse archive."
+ (interactive)
+ (require 'browse-url)
+ (let ((list-archive
+ (with-current-buffer gnus-original-article-buffer
+ (gnus-fetch-field "list-archive"))))
+ (cond (list-archive
+ (if (string-match "<\\(http:[^>]*\\)>" list-archive)
+ (browse-url (match-string 1 list-archive))
+ (browse-url list-archive)))
+ (t (gnus-message 1 "no list-archive in this group")))))
+
+;;; Utility functions
+
+(defun gnus-mailing-list-message (address)
+ "Send message to ADDRESS.
+ADDRESS is specified by a \"mailto:\" URL."
+ (cond
+ ((string-match "<\\(mailto:[^>]*\\)>" address)
+ (require 'gnus-art)
+ (gnus-url-mailto (match-string 1 address)))
+ ;; other case <http://...> to be done.
+ (t nil)))
+
+(provide 'gnus-ml)
+
+;;; gnus-ml.el ends here
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