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1 ;;; scribe.el --- scribe mode, and its idiosyncratic commands.
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2 ;; Keywords: wp
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3
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4 ;; Copyright (C) 1985 Free Software Foundation, Inc.
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5
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6 ;; This file might become part of GNU Emacs.
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7
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8 ;; GNU Emacs is distributed in the hope that it will be useful,
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9 ;; but without any warranty. No author or distributor
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10 ;; accepts responsibility to anyone for the consequences of using it
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11 ;; or for whether it serves any particular purpose or works at all,
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12 ;; unless he says so in writing.
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13
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14 ;; Everyone is granted permission to copy, modify and redistribute
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15 ;; GNU Emacs, but only under the conditions described in the
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16 ;; document "GNU Emacs copying permission notice". An exact copy
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17 ;; of the document is supposed to have been given to you along with
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18 ;; GNU Emacs so that you can know how you may redistribute it all.
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19 ;; It should be in a file named COPYING. Among other things, the
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20 ;; copyright notice and this notice must be preserved on all copies.
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21
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22
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23 (defvar scribe-mode-syntax-table nil
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24 "Syntax table used while in scribe mode.")
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25
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26 (defvar scribe-mode-abbrev-table nil
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27 "Abbrev table used while in scribe mode.")
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28
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29 (defvar scribe-fancy-paragraphs nil
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30 "*Non-NIL makes Scribe mode use a different style of paragraph separation.")
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31
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32 (defvar scribe-electric-quote nil
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33 "*Non-NIL makes insert of double quote use `` or '' depending on context.")
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34
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35 (defvar scribe-electric-parenthesis nil
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36 "*Non-NIL makes parenthesis char ( (]}> ) automatically insert its close
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37 if typed after an @Command form.")
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38
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39 (defconst scribe-open-parentheses "[({<"
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40 "Open parenthesis characters for Scribe.")
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41
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42 (defconst scribe-close-parentheses "])}>"
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43 "Close parenthesis characters for Scribe. These should match up with
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44 scribe-open-parenthesis.")
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45
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46 (if (null scribe-mode-syntax-table)
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47 (let ((st (syntax-table)))
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48 (unwind-protect
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49 (progn
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50 (setq scribe-mode-syntax-table (copy-syntax-table
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51 text-mode-syntax-table))
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52 (set-syntax-table scribe-mode-syntax-table)
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53 (modify-syntax-entry ?\" " ")
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54 (modify-syntax-entry ?\\ " ")
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55 (modify-syntax-entry ?@ "w ")
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56 (modify-syntax-entry ?< "(> ")
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57 (modify-syntax-entry ?> ")< ")
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58 (modify-syntax-entry ?[ "(] ")
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59 (modify-syntax-entry ?] ")[ ")
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60 (modify-syntax-entry ?{ "(} ")
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61 (modify-syntax-entry ?} "){ ")
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62 (modify-syntax-entry ?' "w "))
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63 (set-syntax-table st))))
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64
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65 (defvar scribe-mode-map nil)
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66
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67 (if scribe-mode-map
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68 nil
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69 (setq scribe-mode-map (make-sparse-keymap))
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70 (define-key scribe-mode-map "\t" 'scribe-tab)
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71 (define-key scribe-mode-map "\e\t" 'tab-to-tab-stop)
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72 (define-key scribe-mode-map "\es" 'center-line)
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73 (define-key scribe-mode-map "\e}" 'up-list)
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74 (define-key scribe-mode-map "\eS" 'center-paragraph)
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75 (define-key scribe-mode-map "\"" 'scribe-insert-quote)
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76 (define-key scribe-mode-map "(" 'scribe-parenthesis)
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77 (define-key scribe-mode-map "[" 'scribe-parenthesis)
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78 (define-key scribe-mode-map "{" 'scribe-parenthesis)
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79 (define-key scribe-mode-map "<" 'scribe-parenthesis)
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80 (define-key scribe-mode-map "\^cc" 'scribe-chapter)
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81 (define-key scribe-mode-map "\^cS" 'scribe-section)
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82 (define-key scribe-mode-map "\^cs" 'scribe-subsection)
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83 (define-key scribe-mode-map "\^ce" 'scribe-insert-environment)
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84 (define-key scribe-mode-map "\^c\^e" 'scribe-bracket-region-be)
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85 (define-key scribe-mode-map "\^c[" 'scribe-begin)
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86 (define-key scribe-mode-map "\^c]" 'scribe-end)
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87 (define-key scribe-mode-map "\^ci" 'scribe-italicize-word)
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88 (define-key scribe-mode-map "\^cb" 'scribe-bold-word)
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89 (define-key scribe-mode-map "\^cu" 'scribe-underline-word))
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90
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91 ;;;###autoload
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92 (defun scribe-mode ()
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93 "Major mode for editing files of Scribe (a text formatter) source.
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94 Scribe-mode is similar text-mode, with a few extra commands added.
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95 \\{scribe-mode-map}
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96
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97 Interesting variables:
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98
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99 scribe-fancy-paragraphs
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100 Non-nil makes Scribe mode use a different style of paragraph separation.
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101
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102 scribe-electric-quote
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103 Non-nil makes insert of double quote use `` or '' depending on context.
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104
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105 scribe-electric-parenthesis
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106 Non-nil makes an open-parenthesis char (one of `([<{')
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107 automatically insert its close if typed after an @Command form."
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108 (interactive)
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109 (kill-all-local-variables)
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110 (use-local-map scribe-mode-map)
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111 (setq mode-name "Scribe")
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112 (setq major-mode 'scribe-mode)
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113 (define-abbrev-table 'scribe-mode-abbrev-table ())
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114 (setq local-abbrev-table scribe-mode-abbrev-table)
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115 (make-local-variable 'comment-start)
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116 (setq comment-start "@Comment[")
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117 (make-local-variable 'comment-start-skip)
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118 (setq comment-start-skip (concat "@Comment[" scribe-open-parentheses "]"))
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119 (make-local-variable 'comment-column)
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120 (setq comment-column 0)
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121 (make-local-variable 'comment-end)
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122 (setq comment-end "]")
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123 (make-local-variable 'paragraph-start)
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124 (setq paragraph-start (concat "\\(^[\n\f]\\)\\|\\(^@\\w+["
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125 scribe-open-parentheses
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126 "].*["
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127 scribe-close-parentheses
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128 "]$\\)"))
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129 (make-local-variable 'paragraph-separate)
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130 (setq paragraph-separate (if scribe-fancy-paragraphs
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131 paragraph-start "^$"))
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132 (make-local-variable 'compile-command)
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133 (setq compile-command (concat "scribe " (buffer-file-name)))
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134 (set-syntax-table scribe-mode-syntax-table)
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135 (run-hooks 'text-mode-hook 'scribe-mode-hook))
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136
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137 (defun scribe-tab ()
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138 (interactive)
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139 (insert "@\\"))
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140
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141 ;; This algorithm could probably be improved somewhat.
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142 ;; Right now, it loses seriously...
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143
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144 (defun scribe ()
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145 "Run Scribe on the current buffer."
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146 (interactive)
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147 (call-interactively 'compile))
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148
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149 (defun scribe-envelop-word (string count)
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150 "Surround current word with Scribe construct @STRING[...]. COUNT
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151 specifies how many words to surround. A negative count means to skip
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152 backward."
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153 (let ((spos (point)) (epos (point)) (ccoun 0) noparens)
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154 (if (not (zerop count))
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155 (progn (if (= (char-syntax (preceding-char)) ?w)
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156 (forward-sexp (min -1 count)))
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157 (setq spos (point))
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158 (if (looking-at (concat "@\\w[" scribe-open-parentheses "]"))
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159 (forward-char 2)
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160 (goto-char epos)
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161 (skip-chars-backward "\\W")
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162 (forward-char -1))
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163 (forward-sexp (max count 1))
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164 (setq epos (point))))
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165 (goto-char spos)
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166 (while (and (< ccoun (length scribe-open-parentheses))
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167 (save-excursion
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168 (or (search-forward (char-to-string
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169 (aref scribe-open-parentheses ccoun))
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170 epos t)
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171 (search-forward (char-to-string
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172 (aref scribe-close-parentheses ccoun))
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173 epos t)))
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174 (setq ccoun (1+ ccoun))))
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175 (if (>= ccoun (length scribe-open-parentheses))
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176 (progn (goto-char epos)
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177 (insert "@end(" string ")")
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178 (goto-char spos)
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179 (insert "@begin(" string ")"))
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180 (goto-char epos)
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181 (insert (aref scribe-close-parentheses ccoun))
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182 (goto-char spos)
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183 (insert "@" string (aref scribe-open-parentheses ccoun))
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184 (goto-char epos)
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185 (forward-char 3)
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186 (skip-chars-forward scribe-close-parentheses))))
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187
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188 (defun scribe-underline-word (count)
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189 "Underline COUNT words around point by means of Scribe constructs."
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190 (interactive "p")
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191 (scribe-envelop-word "u" count))
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192
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193 (defun scribe-bold-word (count)
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194 "Boldface COUNT words around point by means of Scribe constructs."
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195 (interactive "p")
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196 (scribe-envelop-word "b" count))
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197
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198 (defun scribe-italicize-word (count)
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199 "Italicize COUNT words around point by means of Scribe constructs."
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200 (interactive "p")
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201 (scribe-envelop-word "i" count))
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202
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203 (defun scribe-begin ()
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204 (interactive)
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205 (insert "\n")
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206 (forward-char -1)
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207 (scribe-envelop-word "Begin" 0)
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208 (re-search-forward (concat "[" scribe-open-parentheses "]")))
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209
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210 (defun scribe-end ()
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211 (interactive)
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212 (insert "\n")
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213 (forward-char -1)
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214 (scribe-envelop-word "End" 0)
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215 (re-search-forward (concat "[" scribe-open-parentheses "]")))
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216
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217 (defun scribe-chapter ()
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218 (interactive)
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219 (insert "\n")
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220 (forward-char -1)
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221 (scribe-envelop-word "Chapter" 0)
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222 (re-search-forward (concat "[" scribe-open-parentheses "]")))
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223
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224 (defun scribe-section ()
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225 (interactive)
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226 (insert "\n")
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227 (forward-char -1)
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228 (scribe-envelop-word "Section" 0)
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229 (re-search-forward (concat "[" scribe-open-parentheses "]")))
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230
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231 (defun scribe-subsection ()
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232 (interactive)
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233 (insert "\n")
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234 (forward-char -1)
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235 (scribe-envelop-word "SubSection" 0)
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236 (re-search-forward (concat "[" scribe-open-parentheses "]")))
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237
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238 (defun scribe-bracket-region-be (env min max)
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239 (interactive "sEnvironment: \nr")
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240 (save-excursion
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241 (goto-char max)
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242 (insert "@end(" env ")\n")
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243 (goto-char min)
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244 (insert "@begin(" env ")\n")))
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245
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246 (defun scribe-insert-environment (env)
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247 (interactive "sEnvironment: ")
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248 (scribe-bracket-region-be env (point) (point))
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249 (forward-line 1)
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250 (insert ?\n)
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251 (forward-char -1))
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252
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253 (defun scribe-insert-quote (count)
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254 "If scribe-electric-quote is non-NIL, insert ``, '' or \" according
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255 to preceding character. With numeric arg N, always insert N \" characters.
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256 Else just insert \"."
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257 (interactive "P")
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258 (if (or count (not scribe-electric-quote))
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259 (self-insert-command (prefix-numeric-value count))
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260 (let (lastfore lastback lastquote)
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261 (insert
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262 (cond
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263 ((= (preceding-char) ?\\) ?\")
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264 ((bobp) "``")
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265 (t
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266 (setq lastfore (save-excursion (and (search-backward
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267 "``" (- (point) 1000) t)
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268 (point)))
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269 lastback (save-excursion (and (search-backward
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270 "''" (- (point) 1000) t)
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271 (point)))
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272 lastquote (save-excursion (and (search-backward
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273 "\"" (- (point) 100) t)
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274 (point))))
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275 (if (not lastquote)
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276 (cond ((not lastfore) "``")
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277 ((not lastback) "''")
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278 ((> lastfore lastback) "''")
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279 (t "``"))
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280 (cond ((and (not lastback) (not lastfore)) "\"")
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281 ((and lastback (not lastfore) (> lastquote lastback)) "\"")
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282 ((and lastback (not lastfore) (> lastback lastquote)) "``")
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283 ((and lastfore (not lastback) (> lastquote lastfore)) "\"")
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284 ((and lastfore (not lastback) (> lastfore lastquote)) "''")
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285 ((and (> lastquote lastfore) (> lastquote lastback)) "\"")
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286 ((> lastfore lastback) "''")
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287 (t "``")))))))))
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288
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289 (defun scribe-parenthesis (count)
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290 "If scribe-electric-parenthesis is non-NIL, insertion of an open-parenthesis
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291 character inserts the following close parenthesis character if the
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292 preceding text is of the form @Command."
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293 (interactive "P")
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294 (self-insert-command (prefix-numeric-value count))
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295 (let (at-command paren-char point-save)
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296 (if (or count (not scribe-electric-parenthesis))
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297 nil
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298 (save-excursion
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299 (forward-char -1)
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300 (setq point-save (point))
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301 (skip-chars-backward (concat "^ \n\t\f" scribe-open-parentheses))
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302 (setq at-command (and (equal (following-char) ?@)
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303 (/= (point) (1- point-save)))))
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304 (if (and at-command
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305 (setq paren-char
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306 (string-match (regexp-quote
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307 (char-to-string (preceding-char)))
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308 scribe-open-parentheses)))
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309 (save-excursion
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310 (insert (aref scribe-close-parentheses paren-char)))))))
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