1;;; s-region.el --- set region using shift key 2 3;; Copyright (C) 1994, 1995, 2001, 2002, 2003, 2004, 4;; 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: Morten Welinder <terra@diku.dk> 7;; Keywords: terminals 8;; Favourite-brand-of-beer: None, I hate beer. 9 10;; This file is part of GNU Emacs. 11 12;; GNU Emacs is free software; you can redistribute it and/or modify 13;; it under the terms of the GNU General Public License as published by 14;; the Free Software Foundation; either version 2, or (at your option) 15;; any later version. 16 17;; GNU Emacs is distributed in the hope that it will be useful, 18;; but WITHOUT ANY WARRANTY; without even the implied warranty of 19;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20;; GNU General Public License for more details. 21 22;; You should have received a copy of the GNU General Public License 23;; along with GNU Emacs; see the file COPYING. If not, write to the 24;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 25;; Boston, MA 02110-1301, USA. 26 27;;; Commentary: 28 29;; Having loaded this code you can set the region by holding down the 30;; shift key and move the cursor to the other end of the region. The 31;; functionality provided by this code is similar to that provided by 32;; the editors of Borland International's compilers for ms-dos. 33 34;; Currently, s-region-move may be bound only to events that are vectors 35;; of length one and whose last element is a symbol. Also, the functions 36;; that are given this kind of overlay should be (interactive "p") 37;; functions. 38 39;; If the following keys are not already bound then... 40;; C-insert is bound to copy-region-as-kill 41;; S-delete is bound to kill-region 42;; S-insert is bound to yank 43 44;;; Code: 45 46(defvar s-region-overlay (make-overlay 1 1)) 47(overlay-put s-region-overlay 'face 'region) 48(overlay-put s-region-overlay 'priority 1000000) ; for hilit19 49 50(defun s-region-unshift (key) 51 "Remove shift modifier from last keypress KEY and return that as a key." 52 (if (vectorp key) 53 (let ((last (aref key (1- (length key))))) 54 (if (symbolp last) 55 (let* ((keyname (symbol-name last)) 56 (pos (string-match "S-" keyname))) 57 (if pos 58 ;; We skip all initial parts of the event assuming that 59 ;; those are setting up the prefix argument to the command. 60 (vector (intern (concat (substring keyname 0 pos) 61 (substring keyname (+ 2 pos))))) 62 (error "Non-shifted key: %S" key))) 63 (error "Key does not end in a symbol: %S" key))) 64 (error "Non-vector key: %S" key))) 65 66(defun s-region-move-p1 (&rest arg) 67 "This is an overlay function to point-moving keys that are interactive \"p\"." 68 (interactive "p") 69 (apply (function s-region-move) arg)) 70 71(defun s-region-move-p2 (&rest arg) 72 "This is an overlay function to point-moving keys that are interactive \"P\"." 73 (interactive "P") 74 (apply (function s-region-move) arg)) 75 76(defun s-region-move (&rest arg) 77 (if (if mark-active (not (equal last-command 's-region-move)) t) 78 (set-mark-command nil) 79 (message "")) ; delete the "Mark set" message 80 (setq this-command 's-region-move) 81 (apply (key-binding (s-region-unshift (this-command-keys))) arg) 82 (move-overlay s-region-overlay (mark) (point) (current-buffer)) 83 (sit-for 1) 84 (delete-overlay s-region-overlay)) 85 86(defun s-region-bind (keylist &optional map) 87 "Bind shifted keys in KEYLIST to `s-region-move-p1' or `s-region-move-p2'. 88Each key in KEYLIST is shifted and bound to one of the `s-region-move' 89functions provided it is already bound to some command or other. 90Optional second argument MAP specifies keymap to add binding to, defaulting 91to global keymap." 92 (let ((p2 (list 'scroll-up 'scroll-down 93 'beginning-of-buffer 'end-of-buffer))) 94 (or map (setq map global-map)) 95 (while keylist 96 (let* ((key (car keylist)) 97 (binding (key-binding key))) 98 (if (commandp binding) 99 (define-key 100 map 101 (vector (intern (concat "S-" (symbol-name (aref key 0))))) 102 (cond ((memq binding p2) 103 's-region-move-p2) 104 (t 's-region-move-p1))))) 105 (setq keylist (cdr keylist))))) 106 107;; Single keys (plus modifiers) only! 108(s-region-bind 109 (list [right] [left] [up] [down] 110 [C-left] [C-right] [C-up] [C-down] 111 [M-left] [M-right] [M-up] [M-down] 112 [next] [previous] [home] [end] 113 [C-next] [C-previous] [C-home] [C-end] 114 [M-next] [M-previous] [M-home] [M-end])) 115 116(or (global-key-binding [C-insert]) 117 (global-set-key [C-insert] 'copy-region-as-kill)) 118(or (global-key-binding [S-delete]) 119 (global-set-key [S-delete] 'kill-region)) 120(or (global-key-binding [S-insert]) 121 (global-set-key [S-insert] 'yank)) 122 123(provide 's-region) 124 125;;; arch-tag: a471e912-18d7-4247-a29b-2100bca180ff 126;;; s-region.el ends here 127