mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
121 lines
4.2 KiB
EmacsLisp
121 lines
4.2 KiB
EmacsLisp
;;; delsel.el --- delete selection if you insert
|
|
|
|
;; Copyright (C) 1992 Free Software Foundation, Inc.
|
|
|
|
;; Author: Matthieu Devin <devin@lucid.com>
|
|
;; Maintainer: FSF
|
|
;; Created: 14 Jul 92
|
|
;; 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, Inc., 59 Temple Place - Suite 330,
|
|
;; Boston, MA 02111-1307, 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.
|
|
|
|
;;; Code:
|
|
|
|
(defvar delete-selection-mode t
|
|
"*Non-nil means Delete Selection mode is enabled.
|
|
In Delete Selection mode, when a region is highlighted,
|
|
insertion commands first delete the region and then insert.")
|
|
|
|
(defun delete-active-region (&optional killp)
|
|
(if killp
|
|
(kill-region (point) (mark))
|
|
(delete-region (point) (mark)))
|
|
(setq mark-active nil)
|
|
(run-hooks 'deactivate-mark-hook)
|
|
t)
|
|
|
|
(defun delete-selection-pre-hook ()
|
|
(if (and delete-selection-mode
|
|
(not buffer-read-only)
|
|
transient-mark-mode mark-active)
|
|
(let ((type (and (symbolp this-command)
|
|
(get this-command 'delete-selection))))
|
|
(cond ((eq type 'kill)
|
|
(delete-active-region t))
|
|
((eq type 'yank)
|
|
;; Before a yank command,
|
|
;; make sure we don't yank the same region
|
|
;; that we are going to delete.
|
|
;; That would make yank a no-op.
|
|
(if (string= (buffer-substring (point) (mark))
|
|
(car kill-ring))
|
|
(current-kill 1))
|
|
(delete-active-region nil))
|
|
((eq type 'supersede)
|
|
(if (delete-active-region nil)
|
|
(setq this-command '(lambda () (interactive)))))
|
|
(type
|
|
(delete-active-region nil))))))
|
|
|
|
(add-hook 'pre-command-hook 'delete-selection-pre-hook)
|
|
|
|
(put 'self-insert-command 'delete-selection t)
|
|
(put 'self-insert-iso 'delete-selection t)
|
|
|
|
(put 'yank 'delete-selection 'yank)
|
|
(put 'clipboard-yank 'delete-selection 'yank)
|
|
(put 'insert-register 'delete-selection t)
|
|
|
|
(put 'delete-backward-char 'delete-selection 'supersede)
|
|
(put 'backward-delete-char-untabify 'delete-selection 'supersede)
|
|
(put 'delete-char 'delete-selection 'supersede)
|
|
|
|
(put 'newline-and-indent 'delete-selection 't)
|
|
(put 'newline 'delete-selection t)
|
|
(put 'open-line 'delete-selection t)
|
|
|
|
;;;###autoload
|
|
(defalias 'pending-delete-mode 'delete-selection-mode)
|
|
;;;###autoload
|
|
(defun delete-selection-mode (arg)
|
|
"Toggle Delete Selection mode.
|
|
When ON, typed text replaces the selection if the selection is active.
|
|
When OFF, typed text is just inserted at point."
|
|
(interactive "P")
|
|
(setq delete-selection-mode
|
|
(if (null arg) (not delete-selection-mode)
|
|
(> (prefix-numeric-value arg) 0)))
|
|
(force-mode-line-update))
|
|
|
|
;; This is very useful for cancelling a selection in the minibuffer without
|
|
;; aborting the minibuffer.
|
|
(defun minibuffer-keyboard-quit ()
|
|
"Abort recursive edit.
|
|
In Delete Selection mode mode, if the mark is active, just deactivate it;
|
|
then it takes a second C-g to abort the minibuffer."
|
|
(interactive)
|
|
(if (and delete-selection-mode transient-mark-mode mark-active)
|
|
(setq deactivate-mark t)
|
|
(abort-recursive-edit)))
|
|
|
|
(define-key minibuffer-local-map "\C-g" 'minibuffer-keyboard-quit)
|
|
(define-key minibuffer-local-ns-map "\C-g" 'minibuffer-keyboard-quit)
|
|
(define-key minibuffer-local-completion-map "\C-g" 'minibuffer-keyboard-quit)
|
|
(define-key minibuffer-local-must-match-map "\C-g" 'minibuffer-keyboard-quit)
|
|
(define-key minibuffer-local-isearch-map "\C-g" 'minibuffer-keyboard-quit)
|
|
|
|
(provide 'delsel)
|
|
|
|
;;; delsel.el ends here
|