-;;; Pending delete selection
-;;; Copyright (C) 1992 Free Software Foundation, Inc.
-;;; Created: 14 Jul 92, Matthieu Devin <devin@lucid.com>
-;;; Last change 18-Feb-93, devin.
-
-;;; 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, 675 Mass Ave, Cambridge, MA 02139, USA.
-
-
-;;; This files makes the active region be pending delete, meaning that
-;;; text inserted while the region is active will replace the region contents.
-;;; This is a popular behavior of personal computers text editors.
-
-(defvar pending-delete-mode t
- "*Non-nil means Pending Delete mode is enabled.
-In Pending Delete mode, when a region is highlighted,
-insertion commands first delete the region and then insert.")
+;;; delsel.el --- delete selection if you insert
+
+;; Copyright (C) 1992, 1997, 1998, 2001, 2002, 2003, 2004,
+;; 2005 Free Software Foundation, Inc.
+
+;; Author: Matthieu Devin <devin@lucid.com>
+;; Maintainer: FSF
+;; Created: 14 Jul 92
+;; Keywords: convenience emulations
+
+;; 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., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; This file makes the active region be pending delete, meaning that
+;; text inserted while the region is active will replace the region contents.
+;; This is a popular behavior of personal computers text editors.
+
+;; Interface:
+
+;; Commands which will delete the selection need a 'delete-selection
+;; property on their symbols; commands which insert text but don't
+;; have this property won't delete the selction. It can be one of
+;; the values:
+;; 'yank
+;; For commands which do a yank; ensures the region about to be
+;; deleted isn't yanked.
+;; 'supersede
+;; Delete the active region and ignore the current command,
+;; i.e. the command will just delete the region.
+;; 'kill
+;; `kill-region' is used on the selection, rather than
+;; `delete-region'. (Text selected with the mouse will typically
+;; be yankable anyhow.)
+;; non-nil
+;; The normal case: delete the active region prior to executing
+;; the command which will insert replacement text.
+
+;;; Code:
+
+;;;###autoload
+(defalias 'pending-delete-mode 'delete-selection-mode)
+
+;;;###autoload
+(define-minor-mode delete-selection-mode
+ "Toggle Delete Selection mode.
+With prefix ARG, turn Delete Selection mode on if and only if ARG is
+positive.
+
+When Delete Selection mode is enabled, Transient Mark mode is also
+enabled and typed text replaces the selection if the selection is
+active. Otherwise, typed text is just inserted at point regardless of
+any selection."
+ :global t :group 'editing-basics
+ (if (not delete-selection-mode)
+ (remove-hook 'pre-command-hook 'delete-selection-pre-hook)
+ (add-hook 'pre-command-hook 'delete-selection-pre-hook)
+ (transient-mark-mode t)))