;;; s-region.el --- set region using shift key. ;;; Copyright (C) 1994 Free Software Foundation, Inc. ;; Author: Morten Welinder (terra@diku.dk) ;; Version: 1.00 ;; Keywords: terminals ;; Favourite-brand-of-beer: None, I hate beer. ;; 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. ;;; Commentary: ;; Having loaded this code you can set the region by holding down the ;; shift key and move the cursor to the other end of the region. The ;; functionallity provided by this code is similar to that provided by ;; the editors of Borland International's compilers for ms-dos. ;; Currently, s-region-move may be bound only to events that are vectors ;; of length one and whose last element is a symbol. Also, the functions ;; that are given this kind of overlay should be (interactive "p") ;; functions. ;; If the following keys are not already bound then... ;; C-insert is bound to copy-region-as-kill ;; S-delete is bound to kill-region ;; S-insert is bound to yank ;;; Code: (defvar s-region-overlay (make-overlay 1 1)) (overlay-put s-region-overlay 'face 'region) (overlay-put s-region-overlay 'priority 1000000) ; for hilit19 (defun s-region-unshift (key) "Remove shift modifier from last keypress KEY and return that as a key." (if (vectorp key) (let ((last (aref key (1- (length key))))) (if (symbolp last) (let* ((keyname (symbol-name last)) (pos (string-match "S-" keyname))) (if pos ;; We skip all initial parts of the event assuming that ;; those are setting up the prefix argument to the command. (vector (intern (concat (substring keyname 0 pos) (substring keyname (+ 2 pos))))) (error "Non-shifted key: %S" key))) (error "Key does not end in a symbol: %S" key))) (error "Non-vector key: %S" key))) (defun s-region-move (&rest arg) "This is an overlay function to point-moving keys." (interactive "p") (if (if mark-active (not (equal last-command 's-region-move)) t) (set-mark-command nil) (message "")) ; delete the "Mark set" message (apply (key-binding (s-region-unshift (this-command-keys))) arg) (move-overlay s-region-overlay (mark) (point) (current-buffer)) (sit-for 1) (delete-overlay s-region-overlay)) (defun s-region-bind (keylist &optional map) "Bind keys in KEYLIST to `s-region-move'. Each key in KEYLIST is bound to `s-region-move' provided it is already bound to some command or other. Optional second argument MAP specifies keymap to add binding to, defaulting to global keymap." (or map (setq map global-map)) (while keylist (if (commandp (key-binding (car keylist))) (define-key map (vector (intern (concat "S-" (symbol-name (aref (car keylist) 0))))) 's-region-move)) (setq keylist (cdr keylist)))) (s-region-bind (list [right] [left] [up] [down] [C-left] [C-right] [C-up] [C-down] [M-left] [M-right] [M-up] [M-down] [next] [previous] [home] [end] [C-next] [C-previous] [C-home] [C-end] [M-next] [M-previous] [M-home] [M-end])) (or (global-key-binding [C-insert]) (global-set-key [C-insert] 'copy-region-as-kill)) (or (global-key-binding [C-delete]) (global-set-key [S-delete] 'kill-region)) (or (global-key-binding [S-insert]) (global-set-key [S-insert] 'yank)) (provide 's-region) ;; s-region.el ends here.