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1 ;;; makesum.el --- generate key binding summary for Emacs
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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 ;; Keywords: help
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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, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: FSF 19.34.
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26
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27 ;;; Commentary:
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28
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29 ;; Displays a nice human-readable summary of all keybindings in a
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30 ;; two-column format.
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31
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32 ;;; Code:
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33
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34 ;;;###autoload
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35 (defun make-command-summary ()
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36 "Make a summary of current key bindings in the buffer *Summary*.
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37 Previous contents of that buffer are killed first."
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38 (interactive)
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39 (message "Making command summary...")
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40 ;; This puts a description of bindings in a buffer called *Help*.
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41 (save-window-excursion
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42 (describe-bindings))
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43 (with-output-to-temp-buffer "*Summary*"
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44 (save-excursion
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45 (let ((cur-mode mode-name))
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46 (set-buffer standard-output)
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47 (erase-buffer)
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48 (insert-buffer-substring "*Help*")
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49 (goto-char (point-min))
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50 (delete-region (point) (progn (forward-line 1) (point)))
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51 (while (search-forward " " nil t)
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52 (replace-match " "))
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53 (goto-char (point-min))
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54 (while (search-forward "-@ " nil t)
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55 (replace-match "-SP"))
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56 (goto-char (point-min))
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57 (while (search-forward " .. ~ " nil t)
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58 (replace-match "SP .. ~"))
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59 (goto-char (point-min))
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60 (while (search-forward "C-?" nil t)
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61 (replace-match "DEL"))
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62 (goto-char (point-min))
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63 (while (search-forward "C-i" nil t)
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64 (replace-match "TAB"))
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65 (goto-char (point-min))
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66 (if (re-search-forward "^Local Bindings:" nil t)
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67 (progn
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68 (forward-char -1)
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69 (insert " for " cur-mode " Mode")
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70 (while (search-forward "??\n" nil t)
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71 (delete-region (point)
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72 (progn
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73 (forward-line -1)
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74 (point))))))
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75 (goto-char (point-min))
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76 (insert "Emacs command summary, " (substring (current-time-string) 0 10)
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77 ".\n")
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78 ;; Delete "key binding" and underlining of dashes.
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79 (delete-region (point) (progn (forward-line 2) (point)))
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80 (forward-line 1) ;Skip blank line
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81 (while (not (eobp))
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82 (let ((beg (point)))
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83 (or (re-search-forward "^$" nil t)
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84 (goto-char (point-max)))
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85 (double-column beg (point))
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86 (forward-line 1)))
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87 (goto-char (point-min)))))
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88 (message "Making command summary...done"))
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89
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90 (defun double-column (start end)
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91 (interactive "r")
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92 (let (half cnt
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93 line lines nlines
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94 (from-end (- (point-max) end)))
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95 (setq nlines (count-lines start end))
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96 (if (<= nlines 1)
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97 nil
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98 (setq half (/ (1+ nlines) 2))
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99 (goto-char start)
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100 (save-excursion
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101 (forward-line half)
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102 (while (< half nlines)
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103 (setq half (1+ half))
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104 (setq line (buffer-substring (point) (save-excursion (end-of-line) (point))))
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105 (setq lines (cons line lines))
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106 (delete-region (point) (progn (forward-line 1) (point)))))
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107 (setq lines (nreverse lines))
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108 (while lines
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109 (end-of-line)
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110 ;; XEmacs change
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111 (indent-to 41 1)
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112 (insert (car lines))
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113 (forward-line 1)
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114 (setq lines (cdr lines))))
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115 (goto-char (- (point-max) from-end))))
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116
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117 ;;; makesum.el ends here
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