;;; gnus-undo.el --- minor mode for undoing in Gnus
-;; Copyright (C) 1996, 1997, 1998, 1999, 2000
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1996-2016 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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.
+;; 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
+;; 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.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(eval-when-compile (require 'cl))
+(eval-when-compile
+ (when (featurep 'xemacs)
+ (require 'easy-mmode))) ; for `define-minor-mode'
(require 'gnus-util)
(require 'gnus)
-(require 'custom)
(defgroup gnus-undo nil
"Undoing in Gnus buffers."
:group 'gnus-undo)
(defcustom gnus-undo-mode nil
+ ;; FIXME: This is a buffer-local minor mode which requires running
+ ;; code upon activation/deactivation, so defining it as a defcustom
+ ;; doesn't seem very useful: setting it to non-nil via Customize
+ ;; probably won't do the right thing.
"Minor mode for undoing in Gnus buffers."
:type 'boolean
:group 'gnus-undo)
;;; Minor mode definition.
-(defvar gnus-undo-mode-map nil)
-
-(unless gnus-undo-mode-map
- (setq gnus-undo-mode-map (make-sparse-keymap))
-
- (gnus-define-keys gnus-undo-mode-map
- "\M-\C-_" gnus-undo
- "\C-_" gnus-undo
- "\C-xu" gnus-undo
- ;; many people are used to type `C-/' on X terminals and get `C-_'.
- [(control /)] gnus-undo))
+(defvar gnus-undo-mode-map
+ (let ((map (make-sparse-keymap)))
+ (gnus-define-keys map
+ "\M-\C-_" gnus-undo
+ "\C-_" gnus-undo
+ "\C-xu" gnus-undo
+ ;; many people are used to type `C-/' on X terminals and get `C-_'.
+ [(control /)] gnus-undo)
+ map))
(defun gnus-undo-make-menu-bar ()
;; This is disabled for the time being.
(cons "Undo" 'gnus-undo-actions)
[menu-bar file whatever])))
-(defun gnus-undo-mode (&optional arg)
+(define-minor-mode gnus-undo-mode
"Minor mode for providing `undo' in Gnus buffers.
\\{gnus-undo-mode-map}"
- (interactive "P")
- (set (make-local-variable 'gnus-undo-mode)
- (if (null arg) (not gnus-undo-mode)
- (> (prefix-numeric-value arg) 0)))
+ :keymap gnus-undo-mode-map
(set (make-local-variable 'gnus-undo-actions) nil)
(set (make-local-variable 'gnus-undo-boundary) t)
(when gnus-undo-mode
;; Set up the menu.
(when (gnus-visual-p 'undo-menu 'menu)
(gnus-undo-make-menu-bar))
- (gnus-add-minor-mode 'gnus-undo-mode "" gnus-undo-mode-map)
- (make-local-hook 'post-command-hook)
- (add-hook 'post-command-hook 'gnus-undo-boundary nil t)
- (gnus-run-hooks 'gnus-undo-mode-hook)))
+ (gnus-make-local-hook 'post-command-hook)
+ (add-hook 'post-command-hook 'gnus-undo-boundary nil t)))
;;; Interface functions.
(error "Nothing further to undo"))
(setq gnus-undo-actions (delq action gnus-undo-actions))
(setq gnus-undo-boundary t)
- (while action
- (funcall (pop action)))))
+ (mapc 'funcall action)))
(provide 'gnus-undo)
projects / gnus / blobdiff