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fix longstanding search bug involving searching for Control-1 chars -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-01-29 Ben Wing <ben@xemacs.org> * search.c (boyer_moore): Fix longstanding bug involving searching for Control-1 chars; code was trying to directly extract the last byte in the textual representation of a char from an Ichar (and doing it in a buggy fashion) rather than just converting the Ichar to text and looking at the last byte. tests/ChangeLog addition: 2010-01-29 Ben Wing <ben@xemacs.org> * automated/search-tests.el: New file. * automated/search-tests.el: * automated/case-tests.el: * automated/case-tests.el (pristine-case-table): Removed. * automated/case-tests.el (uni-mappings): * automated/lisp-tests.el: * automated/regexp-tests.el: Extract some search-related code from case-tests and regexp-tests and move to search-tests. Move some regexp-related code from lisp-tests to regexp-tests. Write a comment trying to express the proper division of labor between case-tests, search-tests and regexp-tests. Add a new test for the Control-1 search bug. Fix a buggy test in the Unicode torture-test section of case-tests.el.
author Ben Wing <ben@xemacs.org>
date Fri, 29 Jan 2010 20:57:42 -0600
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children c902301f8b7d
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1 ;;; -*- coding: iso-8859-1 -*-
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2
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3 ;; Copyright (C) 2000 Free Software Foundation, Inc.
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4 ;; Copyright (C) 2010 Ben Wing.
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5
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6 ;; Author: Yoshiki Hayashi <yoshiki@xemacs.org>
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7 ;; Maintainer: Yoshiki Hayashi <yoshiki@xemacs.org>
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8 ;; Created: 2000
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9 ;; Keywords: tests
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10
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11 ;; This file is part of XEmacs.
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12
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13 ;; XEmacs is free software; you can redistribute it and/or modify it
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14 ;; under the terms of the GNU General Public License as published by
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15 ;; the Free Software Foundation; either version 2, or (at your option)
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16 ;; any later version.
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17
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18 ;; XEmacs is distributed in the hope that it will be useful, but
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19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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21 ;; General Public License for more details.
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22
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23 ;; You should have received a copy of the GNU General Public License
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24 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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25 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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26 ;; 02111-1307, USA.
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27
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28 ;;; Synched up with: Not in FSF.
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29
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30 ;;; Commentary:
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31
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32 ;; Test of non-regexp searching.
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33
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34 ;; Split out of case-tests.el.
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35
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36 ;; NOTE NOTE NOTE: See also:
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37 ;;
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38 ;; (1) regexp-tests.el, for regexp searching.
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39 ;; (2) case-tests.el, for some case-related searches.
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40
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41 ;; NOTE NOTE NOTE: There is some domain overlap among regexp-tests.el,
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42 ;; search-tests.el and case-tests.el. The current rule for what goes where
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43 ;; is:
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44 ;;
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45 ;; (1) Anything regexp-related goes in regexp-tests.el, including searches.
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46 ;; (2) Non-regexp searches go in search-tests.el. This includes case-folding
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47 ;; searches in the situation where the test tests both folding and
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48 ;; non-folding behavior.
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49 ;; (3) If it tests specifically case-folding search behavior, it may go in
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50 ;; case-tets.el, especially if it is testing something non-search-related
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51 ;; at the same time (e.g. the Unicode case map torture tests).
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52
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53 (with-temp-buffer
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54 (insert "Test Buffer")
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55 (let ((case-fold-search t))
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56 (goto-char (point-min))
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57 (Assert-eq (search-forward "test buffer" nil t) 12)
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58 (goto-char (point-min))
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59 (Assert-eq (search-forward "Test buffer" nil t) 12)
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60 (goto-char (point-min))
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61 (Assert-eq (search-forward "Test Buffer" nil t) 12)
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62
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63 (setq case-fold-search nil)
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64 (goto-char (point-min))
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65 (Assert (not (search-forward "test buffer" nil t)))
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66 (goto-char (point-min))
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67 (Assert (not (search-forward "Test buffer" nil t)))
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68 (goto-char (point-min))
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69 (Assert-eq (search-forward "Test Buffer" nil t) 12)))
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70
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71 (with-temp-buffer
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72 (insert "abcdefghijklmnäopqrstuÄvwxyz")
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73 ;; case insensitive
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74 (Assert (not (search-forward "ö" nil t)))
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75 (goto-char (point-min))
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76 (Assert-eq 16 (search-forward "ä" nil t))
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77 (Assert-eq 24 (search-forward "ä" nil t))
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78 (goto-char (point-min))
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79 (Assert-eq 16 (search-forward "Ä" nil t))
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80 (Assert-eq 24 (search-forward "Ä" nil t))
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81 (goto-char (point-max))
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82 (Assert-eq 23 (search-backward "ä" nil t))
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83 (Assert-eq 15 (search-backward "ä" nil t))
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84 (goto-char (point-max))
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85 (Assert-eq 23 (search-backward "Ä" nil t))
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86 (Assert-eq 15 (search-backward "Ä" nil t))
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87 ;; case sensitive
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88 (setq case-fold-search nil)
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89 (goto-char (point-min))
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90 (Assert (not (search-forward "ö" nil t)))
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91 (goto-char (point-min))
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92 (Assert-eq 16 (search-forward "ä" nil t))
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93 (Assert (not (search-forward "ä" nil t)))
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94 (goto-char (point-min))
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95 (Assert-eq 24 (search-forward "Ä" nil t))
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96 (goto-char 16)
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97 (Assert-eq 24 (search-forward "Ä" nil t))
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98 (goto-char (point-max))
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99 (Assert-eq 15 (search-backward "ä" nil t))
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100 (goto-char 15)
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101 (Assert (not (search-backward "ä" nil t)))
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102 (goto-char (point-max))
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103 (Assert-eq 23 (search-backward "Ä" nil t))
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104 (Assert (not (search-backward "Ä" nil t))))
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105
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106 (with-temp-buffer
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107 (insert "aaaaäÄäÄäÄäÄäÄbbbb")
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108 (goto-char (point-min))
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109 (Assert-eq 15 (search-forward "ää" nil t 5))
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110 (goto-char (point-min))
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111 (Assert (not (search-forward "ää" nil t 6)))
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112 (goto-char (point-max))
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113 (Assert-eq 5 (search-backward "ää" nil t 5))
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114 (goto-char (point-max))
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115 (Assert (not (search-backward "ää" nil t 6))))
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116
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117 (when (featurep 'mule)
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118 (let* ((hiragana-a (make-char 'japanese-jisx0208 36 34))
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119 (a-diaeresis ?ä)
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120 (case-table (copy-case-table (standard-case-table)))
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121 (str-hiragana-a (char-to-string hiragana-a))
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122 (str-a-diaeresis (char-to-string a-diaeresis))
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123 (string (concat str-hiragana-a str-a-diaeresis)))
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124 (put-case-table-pair hiragana-a a-diaeresis case-table)
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125 (with-temp-buffer
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126 (set-case-table case-table)
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127 (insert hiragana-a "abcdefg" a-diaeresis)
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128 ;; forward
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129 (goto-char (point-min))
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130 (Assert (not (search-forward "ö" nil t)))
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131 (goto-char (point-min))
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132 (Assert-eq 2 (search-forward str-hiragana-a nil t))
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133 (goto-char (point-min))
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134 (Assert-eq 2 (search-forward str-a-diaeresis nil t))
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135 (goto-char (1+ (point-min)))
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136 (Assert-eq (point-max)
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137 (search-forward str-hiragana-a nil t))
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138 (goto-char (1+ (point-min)))
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139 (Assert-eq (point-max)
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140 (search-forward str-a-diaeresis nil t))
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141 ;; backward
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142 (goto-char (point-max))
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143 (Assert (not (search-backward "ö" nil t)))
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144 (goto-char (point-max))
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145 (Assert-eq (1- (point-max)) (search-backward str-hiragana-a nil t))
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146 (goto-char (point-max))
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147 (Assert-eq (1- (point-max)) (search-backward str-a-diaeresis nil t))
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148 (goto-char (1- (point-max)))
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149 (Assert-eq 1 (search-backward str-hiragana-a nil t))
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150 (goto-char (1- (point-max)))
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151 (Assert-eq 1 (search-backward str-a-diaeresis nil t))
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152 (replace-match "a")
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153 (Assert (looking-at (format "abcdefg%c" a-diaeresis))))
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154 (with-temp-buffer
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155 (set-case-table case-table)
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156 (insert string)
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157 (insert string)
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158 (insert string)
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159 (insert string)
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160 (insert string)
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161 (goto-char (point-min))
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162 (Assert-eq 11 (search-forward string nil t 5))
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163 (goto-char (point-min))
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164 (Assert (not (search-forward string nil t 6)))
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165 (goto-char (point-max))
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166 (Assert-eq 1 (search-backward string nil t 5))
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167 (goto-char (point-max))
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168 (Assert (not (search-backward string nil t 6))))))
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169
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170 ;; Bug reported in http://mid.gmane.org/y9lk5lu5orq.fsf@deinprogramm.de from
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171 ;; Michael Sperber. Fixed 2008-01-29.
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172 (with-string-as-buffer-contents "\n\nDer beruhmte deutsche Flei\xdf\n\n"
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173 (goto-char (point-min))
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174 (Assert (search-forward "Flei\xdf")))
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175
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176 (with-temp-buffer
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177 (let ((target "M\xe9zard")
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178 (debug-xemacs-searches 1))
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179 (Assert (not (search-forward target nil t)))
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180 (insert target)
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181 (goto-char (point-min))
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182 ;; #### search-algorithm-used is simple-search after the following,
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183 ;; which shouldn't be necessary; it should be possible to use
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184 ;; Boyer-Moore.
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185 ;;
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186 ;; But searches for ASCII strings in buffers with nothing above ?\xFF
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187 ;; use Boyer Moore with the current implementation, which is the
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188 ;; important thing for the Gnus use case.
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189 (Assert= (1+ (length target)) (search-forward target nil t))))
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190
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191 (Skip-Test-Unless
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192 (boundp 'debug-xemacs-searches) ; normal when we have DEBUG_XEMACS
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193 "not a DEBUG_XEMACS build"
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194 "checks that the algorithm chosen by #'search-forward is relatively sane"
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195 (let ((debug-xemacs-searches 1))
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196 (with-temp-buffer
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197 ;;#### Ben thinks this is unnecessary. with-temp-buffer creates
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198 ;;a new buffer, which automatically inherits the standard case table.
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199 ;;(set-case-table pristine-case-table)
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200 (insert "\n\nDer beruhmte deutsche Fleiss\n\n")
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201 (goto-char (point-min))
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202 (Assert (search-forward "Fleiss"))
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203 (delete-region (point-min) (point-max))
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204 (insert "\n\nDer beruhmte deutsche Flei\xdf\n\n")
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205 (goto-char (point-min))
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206 (Assert (search-forward "Flei\xdf"))
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207 (Assert-eq 'boyer-moore search-algorithm-used)
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208 (delete-region (point-min) (point-max))
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209 (when (featurep 'mule)
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210 (insert "\n\nDer beruhmte deutsche Flei\xdf\n\n")
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211 (goto-char (point-min))
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212 (Assert
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213 (search-forward (format "Fle%c\xdf"
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214 (make-char 'latin-iso8859-9 #xfd))))
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215 (Assert-eq 'boyer-moore search-algorithm-used)
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216 (insert (make-char 'latin-iso8859-9 #xfd))
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217 (goto-char (point-min))
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218 (Assert (search-forward "Flei\xdf"))
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219 (Assert-eq 'simple-search search-algorithm-used)
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220 (goto-char (point-min))
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221 (Assert (search-forward (format "Fle%c\xdf"
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222 (make-char 'latin-iso8859-9 #xfd))))
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223 (Assert-eq 'simple-search search-algorithm-used)))))
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224
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225
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226 ;; XEmacs bug of long standing.
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227
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228 (with-temp-buffer
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229 (insert "foo\201bar")
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230 (goto-char (point-min))
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231 (Assert-eq (search-forward "\201" nil t) 5))