lisp/emulation/crisp.el

   1 ;; crisp.el -- Emulator for CRiSP/Brief key bindings
   2
   3 ;; Author: Gary D. Foster <Gary.Foster@corp.sun.com>
   4 ;; Keywords: emulations brief crisp
   5
   6 ;; This file is part of GNU Emacs.
   7
   8 ;; GNU Emacs is free software; you can redistribute it and/or modify
   9 ;; it under the terms of the GNU General Public License as published by
  10 ;; the Free Software Foundation; either version 2, or (at your option)
  11 ;; any later version.
  12
  13 ;; GNU Emacs is distributed in the hope that it will be useful,
  14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;; GNU General Public License for more details.
  17
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  20 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21 ;; Boston, MA 02111-1307, USA.
  22
  23 ;;; Commentary:
  24
  25 ;; This file provides keybindings and minor functions to duplicate the
  26 ;; functionality and finger-feel of the CRiSP/Brief editor.  This
  27 ;; package is designed to facilitate transitioning from Brief to Emacs
  28 ;; with a minimum amount of hassles.
  29
  30 ;; Enable this package by putting the following in your .emacs
  31 ;; (require 'crisp)
  32
  33 ;; This package will automatically default to loading the scroll-lock.el
  34 ;; package unless you put (setq crisp-load-scroll-lock nil) in your
  35 ;; .emacs.  If this feature is enabled, it will bind meta-f1 to the
  36 ;; scroll-lock mode toggle.
  37
  38 ;; Also, the default keybindings for brief override the Meta-x key to
  39 ;; exit the editor.  If you don't like this functionality, you can
  40 ;; prevent this key from being rebound with
  41 ;; (setq crisp-override-meta-x nil) in your .emacs.
  42
  43 ;; All these overrides should go *before* the (require 'crisp) statement.
  44
  45 ;; local variables
  46
  47 (defvar crisp-mode-map (copy-keymap (current-global-map))
  48   "Keymap for CRiSP emulation.
  49 All the emulation bindings are done here instead of globally.")
  50
  51 (defvar crisp-override-meta-x t
  52   "Controls overriding the normal Emacs M-x key binding in the CRiSP emulator.
  53 Normally the CRiSP emulator rebinds M-x to save-buffers-exit-emacs
  54 and provides the usual M-x functionality on the F10 key.
  55
  56 If this variable is nil when you start the CRiSP emulator, it
  57 does not alter the binding of M-x.")
  58
  59 (defvar crisp-load-scroll-lock t
  60   "Controls loading of Scroll Lock in the CRiSP emulator.
  61 Its default behavior is to load and enable the Scroll Lock minor mode
  62 package when enabling the CRiSP emulator.
  63
  64 If this variable is nil when you start the CRiSP emulator, it
  65 does not load Scroll Lock.")
  66
  67 (defvar crisp-load-hook nil
  68   "Hooks to run after loading the CRiSP emulator package.")
  69
  70 ;; and now the keymap defines
  71
  72 (define-key crisp-mode-map [(f1)]           'other-window)
  73
  74 (define-key crisp-mode-map [(f2) (down)]    'enlarge-window)
  75 (define-key crisp-mode-map [(f2) (left)]    'shrink-window-horizontally)
  76 (define-key crisp-mode-map [(f2) (right)]   'enlarge-window-horizontally)
  77 (define-key crisp-mode-map [(f2) (up)]      'shrink-window)
  78 (define-key crisp-mode-map [(f3) (down)]    'split-window-vertically)
  79 (define-key crisp-mode-map [(f3) (right)]   'split-window-horizontally)
  80
  81 (define-key crisp-mode-map [(f4)]           'delete-window)
  82 (define-key crisp-mode-map [(control f4)]   'delete-other-windows)
  83
  84 (define-key crisp-mode-map [(f5)]           'search-forward-regexp)
  85 (define-key crisp-mode-map [(f19)]          'search-forward-regexp)
  86 (define-key crisp-mode-map [(meta f5)]       'search-backward-regexp)
  87
  88 (define-key crisp-mode-map [(f6)]           'query-replace)
  89
  90 (define-key crisp-mode-map [(f7)]           'start-kbd-macro)
  91 (define-key crisp-mode-map [(meta f7)]       'end-kbd-macro)
  92
  93 (define-key crisp-mode-map [(f8)]           'call-last-kbd-macro)
  94 (define-key crisp-mode-map [(meta f8)]      'save-kbd-macro)
  95
  96 (define-key crisp-mode-map [(f9)]           'find-file)
  97 (define-key crisp-mode-map [(meta f9)]       'load-library)
  98
  99 (define-key crisp-mode-map [(f10)]          'execute-extended-command)
 100 (define-key crisp-mode-map [(meta f10)]      'compile)
 101
 102 (define-key crisp-mode-map [(SunF37)]          'kill-buffer)
 103 (define-key crisp-mode-map [(kp_add)]       'x-copy-primary-selection)
 104 (define-key crisp-mode-map [(kp_subtract)]  'x-kill-primary-selection)
 105 (define-key crisp-mode-map [(insert)]       'x-yank-clipboard-selection)
 106 (define-key crisp-mode-map [(f16)]          'x-copy-primary-selection) ; copy on Sun5 kbd
 107 (define-key crisp-mode-map [(f20)]          'x-kill-primary-selection) ; cut on Sun5 kbd
 108 (define-key crisp-mode-map [(f18)]          'x-yank-clipboard-selection) ; paste on Sun5 kbd
 109
 110 (define-key crisp-mode-map [(meta d)]       (lambda () (interactive) (beginning-of-line) (kill-line)))
 111 (define-key crisp-mode-map [(meta e)]       'find-file)
 112 (define-key crisp-mode-map [(meta g)]       'goto-line)
 113 (define-key crisp-mode-map [(meta h)]       'help)
 114 (define-key crisp-mode-map [(meta i)]       'overwrite-mode)
 115 (define-key crisp-mode-map [(meta u)]       'advertised-undo)
 116 (define-key crisp-mode-map [(f14)]          'advertised-undo)
 117 (define-key crisp-mode-map [(meta w)]       'save-buffer)
 118 (if
 119  (eq crisp-override-meta-x 't)
 120   (define-key crisp-mode-map [(meta x)]       'save-buffers-kill-emacs))
 121
 122 (define-key crisp-mode-map [(shift right)]  'fkey-forward-word)
 123 (define-key crisp-mode-map [(shift left)]   'fkey-backward-word)
 124 (define-key crisp-mode-map [(shift delete)] 'kill-word)
 125 (define-key crisp-mode-map [(shift backspace)] 'backward-kill-word)
 126 (define-key crisp-mode-map [(control left)] 'backward-word)
 127 (define-key crisp-mode-map [(control right)] 'forward-word)
 128
 129 (define-key crisp-mode-map [(home)] 'crisp-home)
 130 (define-key crisp-mode-map [(end)] 'crisp-end)
 131
 132
 133 (defun crisp-home ()
 134   "\"Home\" the point, the way CRiSP would do it.
 135 The first use moves point to beginning of the line.  Second
 136 consecutive use moves point to beginning of the screen.  Third
 137 consecutive use moves point to the beginning of the buffer."
 138   (interactive nil)
 139   (cond
 140     ((and (eq last-command 'crisp-home) (eq last-last-command 'crisp-home))
 141      (goto-char (point-min))
 142     )
 143     ((eq last-command 'crisp-home)
 144      (move-to-window-line 0)
 145     )
 146     (t
 147      (beginning-of-line)
 148     )
 149   )
 150   (setq last-last-command last-command)
 151 )
 152
 153 (defun crisp-end ()
 154   "\"End\" the point, the way CRiSP would do it.
 155 The first use moves point to end of the line.  Second
 156 consecutive use moves point to the end of the screen.  Third
 157 consecutive use moves point to the end of the buffer."
 158   (interactive nil)
 159   (cond
 160     ((and (eq last-command 'crisp-end) (eq last-last-command 'crisp-end))
 161      (goto-char (point-max))
 162     )
 163     ((eq last-command 'crisp-end)
 164      (move-to-window-line -1)
 165      (end-of-line)
 166     )
 167     (t
 168      (end-of-line)
 169     )
 170   )
 171   (setq last-last-command last-command)
 172 )
 173
 174 ;; Now enable the mode
 175
 176 (kill-all-local-variables)
 177 (use-global-map crisp-mode-map)
 178
 179 (if (eq crisp-load-scroll-lock t)
 180     (require 'scroll-lock))
 181
 182 (if (featurep 'scroll-lock)
 183     (define-key crisp-mode-map [(meta f1)] 'scroll-lock-mode))
 184
 185 (run-hooks 'crisp-load-hook) ;; allow for hooks
 186
 187 (provide 'crisp)
 188
 189 ;; crisp.el ends here