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1 ;;; ledit.el --- Emacs side of ledit interface
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2
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3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
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4
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5 ;; Maintainer: FSF
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6 ;; Keyord: languages
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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23
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24 ;;; Synched up with: FSF 19.30.
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25
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26 ;;; Commentary:
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27
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28 ;; This is a major mode for editing Liszt. See etc/LEDIT for details.
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29
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30 ;;; Code:
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31
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32 ;;; To do:
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33 ;;; o lisp -> emacs side of things (grind-definition and find-definition)
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34
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35 (defvar ledit-mode-map nil)
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36
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37 (defconst ledit-zap-file (concat "/tmp/" (user-login-name) ".l1")
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38 "File name for data sent to Lisp by Ledit.")
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39 (defconst ledit-read-file (concat "/tmp/" (user-login-name) ".l2")
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40 "File name for data sent to Ledit by Lisp.")
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41 (defconst ledit-compile-file
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42 (concat "/tmp/" (user-login-name) ".l4")
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43 "File name for data sent to Lisp compiler by Ledit.")
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44 (defconst ledit-buffer "*LEDIT*"
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45 "Name of buffer in which Ledit accumulates data to send to Lisp.")
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46
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47 ;;;###autoload
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48 (defconst ledit-save-files t "\
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49 *Non-nil means Ledit should save files before transferring to Lisp.")
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50 ;;;###autoload
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51 (defconst ledit-go-to-lisp-string "%?lisp" "\
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52 *Shell commands to execute to resume Lisp job.")
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53 ;;;###autoload
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54 (defconst ledit-go-to-liszt-string "%?liszt" "\
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55 *Shell commands to execute to resume Lisp compiler job.")
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56
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57 (defun ledit-save-defun ()
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58 "Save the current defun in the ledit buffer"
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59 (interactive)
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60 (save-excursion
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61 (end-of-defun)
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62 (let ((end (point)))
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63 (beginning-of-defun)
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64 (append-to-buffer ledit-buffer (point) end))
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65 (message "Current defun saved for Lisp")))
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66
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67 (defun ledit-save-region (beg end)
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68 "Save the current region in the ledit buffer"
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69 (interactive "r")
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70 (append-to-buffer ledit-buffer beg end)
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71 (message "Region saved for Lisp"))
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72
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73 (defun ledit-zap-defun-to-lisp ()
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74 "Carry the current defun to Lisp."
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75 (interactive)
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76 (ledit-save-defun)
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77 (ledit-go-to-lisp))
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78
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79 (defun ledit-zap-defun-to-liszt ()
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80 "Carry the current defun to liszt."
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81 (interactive)
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82 (ledit-save-defun)
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83 (ledit-go-to-liszt))
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84
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85 (defun ledit-zap-region-to-lisp (beg end)
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86 "Carry the current region to Lisp."
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87 (interactive "r")
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88 (ledit-save-region beg end)
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89 (ledit-go-to-lisp))
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90
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91 (defun ledit-go-to-lisp ()
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92 "Suspend Emacs and restart a waiting Lisp job."
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93 (interactive)
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94 (if ledit-save-files
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95 (save-some-buffers))
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96 (if (get-buffer ledit-buffer)
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97 (save-excursion
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98 (set-buffer ledit-buffer)
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99 (goto-char (point-min))
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100 (write-region (point-min) (point-max) ledit-zap-file)
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101 (erase-buffer)))
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102 (suspend-emacs ledit-go-to-lisp-string)
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103 (load ledit-read-file t t))
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104
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105 (defun ledit-go-to-liszt ()
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106 "Suspend Emacs and restart a waiting Liszt job."
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107 (interactive)
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108 (if ledit-save-files
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109 (save-some-buffers))
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110 (if (get-buffer ledit-buffer)
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111 (save-excursion
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112 (set-buffer ledit-buffer)
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113 (goto-char (point-min))
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114 (insert "(declare (macros t))\n")
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115 (write-region (point-min) (point-max) ledit-compile-file)
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116 (erase-buffer)))
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117 (suspend-emacs ledit-go-to-liszt-string)
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118 (load ledit-read-file t t))
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119
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120 (defun ledit-setup ()
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121 "Set up key bindings for the Lisp/Emacs interface."
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122 (if (not ledit-mode-map)
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123 (progn (setq ledit-mode-map (nconc (make-sparse-keymap)
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124 shared-lisp-mode-map))))
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125 (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
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126 (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
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127 (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
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128 (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
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129
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130 (ledit-setup)
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131
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132 ;;;###autoload
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133 (defun ledit-mode ()
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134 "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
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135 Like Lisp mode, plus these special commands:
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136 \\[ledit-save-defun] -- record defun at or after point
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137 for later transmission to Lisp job.
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138 \\[ledit-save-region] -- record region for later transmission to Lisp job.
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139 \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
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140 \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
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141 and transmit saved text.
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142 \\{ledit-mode-map}
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143 To make Lisp mode automatically change to Ledit mode,
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144 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
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145 (interactive)
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146 (lisp-mode)
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147 (ledit-from-lisp-mode))
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148
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149 ;;;###autoload
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150 (defun ledit-from-lisp-mode ()
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151 (use-local-map ledit-mode-map)
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152 (setq mode-name "Ledit")
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153 (setq major-mode 'ledit-mode)
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154 (run-hooks 'ledit-mode-hook))
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155
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156 ;;; ledit.el ends here
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