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428
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1 ;;; isearch-mode.el --- Incremental search minor mode.
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2
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3 ;; Copyright (C) 1992,93,94,95,96,97,98,1999 Free Software Foundation, Inc.
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4
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5 ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu>
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6 ;; Maintainer: XEmacs Development Team
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7 ;; Keywords: extensions, dumped
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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23 ;; Free Software Foundation, 59 Temple Place - Suite 330,
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24 ;; Boston, MA 02111-1307, USA.
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25
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26 ;;; Synched up with: FSF 20.4.
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27
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28 ;;; Commentary:
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29
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30 ;; Instructions
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31
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32 ;; Searching with isearch-mode.el should work just like isearch.el
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33 ;; [the one from Emacs 18], except it is done in a temporary minor
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34 ;; mode that terminates when you finish searching.
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35
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36 ;; For programmed use of isearch-mode, e.g. calling (isearch-forward),
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37 ;; isearch-mode behaves modally and does not return until the search
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38 ;; is completed. It uses a recursive-edit to behave this way. In
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39 ;; that case, you should still be able switch buffers, so be careful
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40 ;; not to get things confused.
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41
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42 ;; The key bindings active within isearch-mode are defined below in
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43 ;; `isearch-mode-map' which is given bindings close to the default
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44 ;; characters of the original isearch.el. With `isearch-mode',
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45 ;; however, you can bind multi-character keys and it should be easier
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46 ;; to add new commands. One bug though: keys with meta-prefix cannot
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47 ;; be longer than two chars. Also see minibuffer-local-isearch-map
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48 ;; for bindings active during `isearch-edit-string'.
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49
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50 ;; The search ring and completion commands automatically put you in
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51 ;; the minibuffer to edit the string. This gives you a chance to
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52 ;; modify the search string before executing the search. There are
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53 ;; three commands to terminate the editing: C-s and C-r exit the
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54 ;; minibuffer and search forward and reverse respectively, while C-m
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55 ;; exits and does a nonincremental search.
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56
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57 ;; Exiting immediately from isearch uses isearch-edit-string instead
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58 ;; of nonincremental-search, if search-nonincremental-instead is non-nil.
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59 ;; The name of this option should probably be changed if we decide to
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60 ;; keep the behavior. No point in forcing nonincremental search until
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61 ;; the last possible moment.
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62
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63 ;; TODO
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64 ;; - Integrate generalized command history to isearch-edit-string.
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65 ;; - Think about incorporating query-replace.
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66 ;; - Hooks and options for failed search.
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67
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68 ;;; Change Log:
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69
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70 ;; Changes before those recorded in ChangeLog:
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71
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72 ;; 20-aug-92 Hacked by jwz for Lucid Emacs 19.3.
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73 ;;
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74 ;; Revision 1.3 92/06/29 13:10:08 liberte
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75 ;; Moved modal isearch-mode handling into isearch-mode.
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76 ;; Got rid of buffer-local isearch variables.
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77 ;; isearch-edit-string used by ring adjustments, completion, and
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78 ;; nonincremental searching. C-s and C-r are additional exit commands.
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79 ;; Renamed all regex to regexp.
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80 ;; Got rid of found-start and found-point globals.
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81 ;; Generalized handling of upper-case chars.
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82
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83 ;; Revision 1.2 92/05/27 11:33:57 liberte
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84 ;; Emacs version 19 has a search ring, which is supported here.
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85 ;; Other fixes found in the version 19 isearch are included here.
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86 ;;
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87 ;; Also see variables search-caps-disable-folding,
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88 ;; search-nonincremental-instead, search-whitespace-regexp, and
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89 ;; commands isearch-toggle-regexp, isearch-edit-string.
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90 ;;
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91 ;; semi-modal isearching is supported.
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92
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93 ;; Changes for 1.1
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94 ;; 3/18/92 Fixed invalid-regexp.
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95 ;; 3/18/92 Fixed yanking in regexps.
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96
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97 ;;; Code:
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98
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99
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100 ;;;=========================================================================
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101 ;;; User-accessible variables
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102
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103 (defgroup isearch nil
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104 "Incremental search minor mode."
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105 :prefix "search-"
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106 :group 'matching)
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107
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108
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109 (defcustom search-exit-option t
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110 "*Non-nil means random control characters terminate incremental search."
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111 :type 'boolean
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112 :group 'isearch)
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113
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114 (defcustom search-slow-window-lines 1
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115 "*Number of lines in slow search display windows.
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116 These are the short windows used during incremental search on slow terminals.
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117 Negative means put the slow search window at the top (normally it's at bottom)
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118 and the value is minus the number of lines."
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119 :type 'integer
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120 :group 'isearch)
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121
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122 (defcustom search-slow-speed 1200
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123 "*Highest terminal speed at which to use \"slow\" style incremental search.
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124 This is the style where a one-line window is created to show the line
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125 that the search has reached."
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126 :type 'integer
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127 :group 'isearch)
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128
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129 ;; We have `search-caps-disable-folding'.
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130 ;(defcustom search-upper-case 'not-yanks
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131 ; "*If non-nil, upper case chars disable case fold searching.
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132 ;That is, upper and lower case chars must match exactly.
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133 ;This applies no matter where the chars come from, but does not
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134 ;apply to chars in regexps that are prefixed with `\\'.
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135 ;If this value is `not-yanks', yanked text is always downcased."
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136 ; :type '(choice (const :tag "off" nil)
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137 ; (const not-yanks)
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138 ; (other :tag "on" t))
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139 ; :group 'isearch)
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140
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141 (defcustom search-nonincremental-instead t
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142 "*If non-nil, do a nonincremental search instead if exiting immediately.
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143 Actually, `isearch-edit-string' is called to let you enter the search
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144 string, and RET terminates editing and does a nonincremental search."
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145 :type 'boolean
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146 :group 'isearch)
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147
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148 ;; FSF default is "\\s-+", but I think our default is better so I'm
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149 ;; leaving it.
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150 (defcustom search-whitespace-regexp "\\(\\s-\\|[\n\r]\\)+"
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151 "*If non-nil, regular expression to match a sequence of whitespace chars."
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152 :type 'regexp
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153 :group 'isearch)
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154
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155 (defcustom search-highlight t
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156 "*Whether incremental search and query-replace should highlight
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157 the text that currently matches the search string."
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158 :type 'boolean
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159 :group 'isearch)
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160
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161 ;; I think the name `search-highlight' makes more sense, both because
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162 ;; of consistency with other search-* variables above, and because it
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163 ;; also applies to query-replace.
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164 (define-obsolete-variable-alias 'isearch-highlight 'search-highlight)
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165
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166 (defcustom search-invisible 'open
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167 "If t incremental search can match hidden text.
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168 nil means don't match invisible text.
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169 If the value is `open', if the text matched is made invisible by
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170 an overlay having an `invisible' property and that overlay has a property
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171 `isearch-open-invisible', then incremental search will show the contents.
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172 \(This applies when using `outline.el' and `hideshow.el'.)"
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173 :type '(choice (const :tag "Match hidden text" t)
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174 (const :tag "Open overlays" open)
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175 (const :tag "Don't match hidden text" nil))
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176 :group 'isearch)
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177
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178 (defcustom isearch-hide-immediately t
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179 "If non-nil, re-hide an invisible match right away.
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180 This variable makes a difference when `search-invisible' is set to `open'.
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181 It means that after search makes some invisible text visible
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182 to show the match, it makes the text invisible again when the match moves.
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444
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183 Ordinarily the text becomes invisible again at the end of the search."
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184 :type 'boolean
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428
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185 :group 'isearch)
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186
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187 (defvar isearch-mode-hook nil
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188 "Function(s) to call after starting up an incremental search.")
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189
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190 (defvar isearch-mode-end-hook nil
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191 "Function(s) to call after terminating an incremental search.")
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192
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193 ;;;==================================================================
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194 ;;; Search ring.
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195
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196 (defvar search-ring nil
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197 "List of search string sequences.")
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198 (defvar regexp-search-ring nil
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199 "List of regular expression search string sequences.")
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200
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201 (defcustom search-ring-max 16
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202 "*Maximum length of search ring before oldest elements are thrown away."
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203 :type 'integer
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204 :group 'isearch)
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205 (defcustom regexp-search-ring-max 16
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206 "*Maximum length of regexp search ring before oldest elements are thrown away."
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207 :type 'integer
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208 :group 'isearch)
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209
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210 ;; The important difference between pre-20.4-merge yank-pointers and
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211 ;; current code is that the yank pointers positions used to be
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212 ;; preserved across the isearch sessions. I changed this because I
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213 ;; think the FSF code is closer to how the feature is supposed to
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214 ;; behave (read: to minibuffer histories.)
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215 (defvar search-ring-yank-pointer nil
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216 "Index in `search-ring' of last string reused.
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217 nil if none yet.")
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218 (defvar regexp-search-ring-yank-pointer nil
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219 "Index in `regexp-search-ring' of last string reused.
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220 nil if none yet.")
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221
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222 (defcustom search-ring-update nil
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223 "*Non-nil if advancing or retreating in the search ring should cause search.
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224 Default nil means edit the string from the search ring first."
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225 :type 'boolean
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226 :group 'isearch)
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227
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710
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228 (defcustom isearch-mode-line-string " Isearch"
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229 "*String to display in the modeline when `isearch-mode' is active.
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230 Set this to nil if you don't want a modeline indicator."
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231 :type '(choice string
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232 (const :tag "none" nil))
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233 :group 'isearch)
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234
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428
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235 ;;;====================================================
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236 ;;; Define isearch-mode keymap.
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237
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238 (defvar isearch-mode-map
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239 (let ((map (make-keymap)))
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240 (set-keymap-name map 'isearch-mode-map)
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241
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242 ;; Bind all printing characters to `isearch-printing-char'.
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243 ;; This isn't normally necessary, but if a printing character were
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244 ;; bound to something other than self-insert-command in global-map,
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245 ;; then it would terminate the search and be executed without this.
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246 (let ((i 32)
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247 (str (make-string 1 0)))
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248 (while (< i 127)
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249 (aset str 0 i)
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250 (define-key map str 'isearch-printing-char)
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251 (setq i (1+ i))))
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252
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253 ;; Here FSF sets up various kludges to handle local bindings with
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254 ;; meta char prefix keys. We don't need isearch-other-meta-char
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255 ;; because we handle things differently (via pre-command-hook).
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256
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257 ;; Several non-printing chars change the searching behavior.
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258 ;;
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259 (define-key map "\C-s" 'isearch-repeat-forward)
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260 (define-key map "\M-\C-s" 'isearch-repeat-forward)
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261 (define-key map "\C-r" 'isearch-repeat-backward)
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262 (define-key map "\C-g" 'isearch-abort)
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263
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771
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264 (define-key map [(meta escape)] 'isearch-cancel)
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428
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265
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266 (define-key map "\C-q" 'isearch-quote-char)
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267
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268 (define-key map "\C-m" 'isearch-exit)
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269 (define-key map "\C-j" 'isearch-printing-char)
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270 (define-key map "\t" 'isearch-printing-char)
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271 ;; I prefer our default.
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272 ;(define-key map " " 'isearch-whitespace-chars)
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273 (define-key map "\M- " 'isearch-whitespace-chars)
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274
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275 (define-key map "\C-w" 'isearch-yank-word)
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276 (define-key map "\C-y" 'isearch-yank-line)
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277 (define-key map "\M-y" 'isearch-yank-kill)
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278
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279 ;; Define keys for regexp chars * ? |.
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280 ;; Nothing special for + because it matches at least once.
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281 (define-key map "*" 'isearch-*-char)
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282 (define-key map "?" 'isearch-*-char)
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283 (define-key map "|" 'isearch-|-char)
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284
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285 ;; delete and backspace delete backward, f1 is help, and C-h can be either
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286 (define-key map 'delete 'isearch-delete-char)
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287 (define-key map 'backspace 'isearch-delete-char)
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288 (define-key map '(control h) 'isearch-help-or-delete-char)
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289 (define-key map 'f1 'isearch-mode-help)
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290 (define-key map 'help 'isearch-mode-help)
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291
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292 (define-key map "\M-n" 'isearch-ring-advance)
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293 (define-key map "\M-p" 'isearch-ring-retreat)
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294 (define-key map "\M-\t" 'isearch-complete)
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295
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296 ;; I find this binding somewhat unintuitive, because it doesn't
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297 ;; work if the mouse pointer is over the echo area -- it has to be
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298 ;; over the search window.
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299 (define-key map 'button2 'isearch-yank-selection)
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300
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301 map)
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302 "Keymap for isearch-mode.")
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303
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304 ;; Some bindings you may want to put in your isearch-mode-hook.
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305 ;; Suggest some alternates...
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306 ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-case-fold)
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307 ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp)
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308 ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string)
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309
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310 (defvar minibuffer-local-isearch-map
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311 (let ((map (make-sparse-keymap)))
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312 ;; #### - this should also be minor-mode-ified
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313 (set-keymap-parents map (list minibuffer-local-map))
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314 (set-keymap-name map 'minibuffer-local-isearch-map)
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315
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316 ;;#### This should just arrange to use the usual Emacs minibuffer histories
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317 (define-key map "\r" 'isearch-nonincremental-exit-minibuffer)
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318 (define-key map "\M-n" 'isearch-ring-advance-edit)
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319 (define-key map "\M-p" 'isearch-ring-retreat-edit)
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320 (define-key map 'down 'isearch-ring-advance-edit)
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321 (define-key map 'up 'isearch-ring-retreat-edit)
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322 (define-key map "\M-\t" 'isearch-complete-edit)
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323 (define-key map "\C-s" 'isearch-forward-exit-minibuffer)
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324 (define-key map "\C-r" 'isearch-reverse-exit-minibuffer)
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325 map)
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326 "Keymap for editing isearch strings in the minibuffer.")
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327
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328 ;;;========================================================
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329 ;; Internal variables declared globally for byte-compiler.
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330 ;; These are all set with setq while isearching
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331 ;; and bound locally while editing the search string.
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332
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333 (defvar isearch-forward nil) ; Searching in the forward direction.
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334 (defvar isearch-regexp nil) ; Searching for a regexp.
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335 (defvar isearch-word nil) ; Searching for words.
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336
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337 (defvar isearch-cmds nil) ; Stack of search status sets.
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338 (defvar isearch-string "") ; The current search string.
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339 (defvar isearch-message "") ; text-char-description version of isearch-string
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340
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341 (defvar isearch-success t) ; Searching is currently successful.
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342 (defvar isearch-invalid-regexp nil) ; Regexp not well formed.
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343 (defvar isearch-within-brackets nil) ; Regexp has unclosed [.
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344 (defvar isearch-other-end nil) ; Start (end) of match if forward (backward).
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345 (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom).
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346 (defvar isearch-barrier 0)
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347 (defvar isearch-just-started nil)
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348 (defvar isearch-buffer nil) ; the buffer we've frobbed the keymap of
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349
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350 (defvar isearch-case-fold-search nil)
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351
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352 ;; Need this for toggling case in isearch-toggle-case-fold. When this
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353 ;; is non-nil, the case-sensitiveness of the search is set by the
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354 ;; user, and is may no longer be dynamically changed as per
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355 ;; search-caps-disable-folding.
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356 (defvar isearch-fixed-case nil)
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357
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358 (defvar isearch-adjusted nil)
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359 (defvar isearch-slow-terminal-mode nil)
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360 ;;; If t, using a small window.
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361 (defvar isearch-small-window nil)
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362 (defvar isearch-opoint 0)
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363 ;;; The window configuration active at the beginning of the search.
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364 (defvar isearch-window-configuration nil)
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365 (defvar isearch-selected-frame nil)
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366
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367 ;; Flag to indicate a yank occurred, so don't move the cursor.
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368 (defvar isearch-yank-flag nil)
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369
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370 ;;; A function to be called after each input character is processed.
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371 ;;; (It is not called after characters that exit the search.)
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372 ;;; It is only set from an optional argument to `isearch-mode'.
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373 (defvar isearch-op-fun nil)
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374
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375 ;;; Is isearch-mode in a recursive edit for modal searching.
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376 (defvar isearch-recursive-edit nil)
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377
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378 ;;; Should isearch be terminated after doing one search?
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379 (defvar isearch-nonincremental nil)
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380
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381 ;; New value of isearch-forward after isearch-edit-string.
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382 (defvar isearch-new-forward nil)
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383
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384 ;; Accumulate here the extents unhidden during searching.
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385 (defvar isearch-unhidden-extents nil) ; in FSF: isearch-opened-overlays
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386
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387
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388 ;;;==============================================================
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389 ;; Minor-mode-alist changes - kind of redundant with the
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390 ;; echo area, but if isearching in multiple windows, it can be useful.
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391
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710
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392 (add-minor-mode 'isearch-mode 'isearch-mode-line-string)
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428
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393
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394 (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil.
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395 (make-variable-buffer-local 'isearch-mode)
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396
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397 ;; We bind these in keydefs.el.
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398 ;(define-key global-map "\C-s" 'isearch-forward)
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399 ;(define-key global-map "\C-r" 'isearch-backward)
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|
400 ;(define-key global-map "\M-\C-s" 'isearch-forward-regexp)
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401 ;(define-key global-map "\M-\C-r" 'isearch-backward-regexp)
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402
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403 ;;;===============================================================
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404 ;;; Entry points to isearch-mode.
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405 ;;; These four functions should replace those in loaddefs.el
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406 ;;; An alternative is to defalias isearch-forward etc to isearch-mode,
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407 ;;; and look at this-command to set the options accordingly.
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408
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|
|
409 (defun isearch-forward (&optional regexp-p no-recursive-edit)
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410 "\
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411 Do incremental search forward.
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412 With a prefix argument, do an incremental regular expression search instead.
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413 \\<isearch-mode-map>
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414 As you type characters, they add to the search string and are found.
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415 The following non-printing keys are bound in `isearch-mode-map'.
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416
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|
|
417 Type \\[isearch-delete-char] to cancel characters from end of search string.
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418 Type \\[isearch-exit] to exit, leaving point at location found.
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|
|
419 Type LFD (C-j) to match end of line.
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|
|
420 Type \\[isearch-repeat-forward] to search again forward,\
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|
|
421 \\[isearch-repeat-backward] to search again backward.
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|
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422 Type \\[isearch-yank-word] to yank word from buffer onto end of search\
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|
|
423 string and search for it.
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|
|
424 Type \\[isearch-yank-line] to yank rest of line onto end of search string\
|
|
|
425 and search for it.
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|
|
426 Type \\[isearch-yank-kill] to yank last killed text onto end of search string\
|
|
|
427 and search for it.
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|
|
428 Type \\[isearch-quote-char] to quote control character to search for it.
|
|
|
429 Type \\[isearch-whitespace-chars] to match all whitespace chars in regexp.
|
|
|
430 \\[isearch-abort] while searching or when search has failed cancels input\
|
|
|
431 back to what has
|
|
|
432 been found successfully.
|
|
|
433 \\[isearch-abort] when search is successful aborts and moves point to\
|
|
|
434 starting point.
|
|
|
435
|
|
|
436 Also supported is a search ring of the previous 16 search strings.
|
|
|
437 Type \\[isearch-ring-advance] to search for the next item in the search ring.
|
|
|
438 Type \\[isearch-ring-retreat] to search for the previous item in the search\
|
|
|
439 ring.
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|
|
440 Type \\[isearch-complete] to complete the search string using the search ring.
|
|
|
441
|
|
|
442 The above keys are bound in the isearch-mode-map. To change the keys which
|
|
|
443 are special to isearch-mode, simply change the bindings in that map.
|
|
|
444
|
|
|
445 Other control and meta characters terminate the search
|
|
|
446 and are then executed normally (depending on `search-exit-option').
|
|
|
447
|
|
|
448 If this function is called non-interactively, it does not return to
|
|
|
449 the calling function until the search is done.
|
|
|
450
|
|
|
451 The bindings, more precisely:
|
|
|
452 \\{isearch-mode-map}"
|
|
|
453
|
|
|
454 ;; Non-standard bindings
|
|
|
455 ;; Type \\[isearch-toggle-regexp] to toggle regular expression with normal searching.
|
|
|
456 ;; Type \\[isearch-edit-string] to edit the search string in the minibuffer.
|
|
|
457 ;; Terminate editing and return to incremental searching with CR.
|
|
|
458
|
|
|
459 (interactive "_P\np")
|
|
|
460 (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit)))
|
|
|
461
|
|
|
462 (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit)
|
|
|
463 "\
|
|
|
464 Do incremental search forward for regular expression.
|
|
|
465 With a prefix argument, do a regular string search instead.
|
|
|
466 Like ordinary incremental search except that your input
|
|
|
467 is treated as a regexp. See \\[isearch-forward] for more info."
|
|
|
468 (interactive "_P\np")
|
|
|
469 (isearch-mode t (null not-regexp) nil (not no-recursive-edit)))
|
|
|
470
|
|
|
471 (defun isearch-backward (&optional regexp-p no-recursive-edit)
|
|
|
472 "\
|
|
|
473 Do incremental search backward.
|
|
|
474 With a prefix argument, do a regular expression search instead.
|
|
|
475 See \\[isearch-forward] for more information."
|
|
|
476 (interactive "_P\np")
|
|
|
477 (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit)))
|
|
|
478
|
|
|
479 (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit)
|
|
|
480 "\
|
|
|
481 Do incremental search backward for regular expression.
|
|
|
482 With a prefix argument, do a regular string search instead.
|
|
|
483 Like ordinary incremental search except that your input
|
|
|
484 is treated as a regexp. See \\[isearch-forward] for more info."
|
|
|
485 (interactive "_P\np")
|
|
|
486 (isearch-mode nil (null not-regexp) nil (not no-recursive-edit)))
|
|
|
487
|
|
|
488 ;; The problem here is that you can't scroll the help screen; as soon
|
|
|
489 ;; as you press a key, it's gone. I don't know of a good way to fix
|
|
|
490 ;; it, though. -hniksic
|
|
|
491 (defun isearch-mode-help ()
|
|
|
492 (interactive "_")
|
|
|
493 (let ((w (selected-window)))
|
|
|
494 (describe-function 'isearch-forward)
|
|
|
495 (select-window w))
|
|
|
496 (isearch-update))
|
|
|
497
|
|
|
498
|
|
|
499 ;;;==================================================================
|
|
|
500 ;; isearch-mode only sets up incremental search for the minor mode.
|
|
|
501 ;; All the work is done by the isearch-mode commands.
|
|
|
502
|
|
|
503 (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p)
|
|
|
504 "Start isearch minor mode. Called by `isearch-forward', etc.
|
|
|
505
|
|
|
506 \\{isearch-mode-map}"
|
|
|
507
|
|
|
508 (if executing-kbd-macro (setq recursive-edit nil))
|
|
|
509
|
|
|
510 (let ((inhibit-quit t)) ; don't leave things in an inconsistent state...
|
|
|
511
|
|
|
512 ;; Initialize global vars.
|
|
|
513 (setq isearch-buffer (current-buffer)
|
|
|
514 isearch-forward forward
|
|
|
515 isearch-regexp regexp
|
|
|
516 isearch-word word-p
|
|
|
517 isearch-op-fun op-fun
|
|
|
518 isearch-case-fold-search case-fold-search
|
|
|
519 isearch-fixed-case nil
|
|
|
520 isearch-string ""
|
|
|
521 isearch-message ""
|
|
|
522 isearch-cmds nil
|
|
|
523 isearch-success t
|
|
|
524 isearch-wrapped nil
|
|
|
525 isearch-barrier (point)
|
|
|
526 isearch-adjusted nil
|
|
|
527 isearch-yank-flag nil
|
|
|
528 isearch-invalid-regexp nil
|
|
|
529 isearch-within-brackets nil
|
|
|
530 isearch-slow-terminal-mode (and (<= (device-baud-rate)
|
|
|
531 search-slow-speed)
|
|
|
532 (> (window-height)
|
|
|
533 (* 4 search-slow-window-lines)))
|
|
|
534 isearch-other-end nil
|
|
|
535 isearch-small-window nil
|
|
|
536 isearch-just-started t
|
|
|
537
|
|
|
538 isearch-opoint (point)
|
|
|
539 search-ring-yank-pointer nil
|
|
|
540 regexp-search-ring-yank-pointer nil
|
|
440
|
541 isearch-unhidden-extents nil
|
|
428
|
542 isearch-window-configuration (current-window-configuration)
|
|
|
543
|
|
|
544 ;; #### What we really need is a buffer-local
|
|
|
545 ;; overriding-local-map. See isearch-pre-command-hook for
|
|
|
546 ;; more details.
|
|
|
547 overriding-local-map (progn
|
|
|
548 (set-keymap-parents isearch-mode-map
|
|
|
549 (nconc (current-minor-mode-maps)
|
|
|
550 (and (current-local-map)
|
|
|
551 (list (current-local-map)))))
|
|
|
552 isearch-mode-map)
|
|
|
553 isearch-selected-frame (selected-frame)
|
|
|
554
|
|
|
555 )
|
|
|
556
|
|
|
557 ;; XEmacs change: without clearing the match data, sometimes old values
|
|
|
558 ;; of isearch-other-end get used. Don't ask me why...
|
|
|
559 (store-match-data nil)
|
|
|
560
|
|
|
561 (add-hook 'pre-command-hook 'isearch-pre-command-hook)
|
|
|
562
|
|
|
563 (setq isearch-mode (gettext " Isearch"))
|
|
|
564 (redraw-modeline)
|
|
|
565
|
|
|
566 (isearch-push-state)
|
|
|
567
|
|
|
568 ) ; inhibit-quit is t before here
|
|
|
569
|
|
|
570 (isearch-update)
|
|
|
571 (run-hooks 'isearch-mode-hook)
|
|
|
572
|
|
|
573 ;; isearch-mode can be made modal (in the sense of not returning to
|
|
|
574 ;; the calling function until searching is completed) by entering
|
|
|
575 ;; a recursive-edit and exiting it when done isearching.
|
|
|
576 (if recursive-edit
|
|
|
577 (let ((isearch-recursive-edit t))
|
|
|
578 (recursive-edit)))
|
|
|
579 isearch-success)
|
|
|
580
|
|
|
581
|
|
|
582 ;;;====================================================
|
|
|
583 ;; Some high level utilities. Others below.
|
|
|
584
|
|
|
585 (defun isearch-update ()
|
|
|
586 ;; Called after each command to update the display.
|
|
|
587 (if (null unread-command-events)
|
|
|
588 (progn
|
|
|
589 (if (not (input-pending-p))
|
|
|
590 (isearch-message))
|
|
|
591 (if (and isearch-slow-terminal-mode
|
|
|
592 (not (or isearch-small-window
|
|
|
593 (pos-visible-in-window-p))))
|
|
|
594 (let ((found-point (point)))
|
|
|
595 (setq isearch-small-window t)
|
|
|
596 (move-to-window-line 0)
|
|
|
597 (let ((window-min-height 1))
|
|
|
598 (split-window nil (if (< search-slow-window-lines 0)
|
|
|
599 (1+ (- search-slow-window-lines))
|
|
|
600 (- (window-height)
|
|
|
601 (1+ search-slow-window-lines)))))
|
|
|
602 (if (< search-slow-window-lines 0)
|
|
|
603 (progn (vertical-motion (- 1 search-slow-window-lines))
|
|
|
604 (set-window-start (next-window) (point))
|
|
|
605 (set-window-hscroll (next-window)
|
|
|
606 (window-hscroll))
|
|
|
607 (set-window-hscroll (selected-window) 0))
|
|
|
608 (other-window 1))
|
|
|
609 (goto-char found-point)))
|
|
|
610 (if isearch-other-end
|
|
|
611 (if (< isearch-other-end (point))
|
|
|
612 (isearch-highlight isearch-other-end (point))
|
|
|
613 (isearch-highlight (point) isearch-other-end))
|
|
|
614 (isearch-dehighlight))
|
|
|
615 ))
|
|
|
616 (setq ;; quit-flag nil not for isearch-mode
|
|
|
617 isearch-adjusted nil
|
|
|
618 isearch-yank-flag nil)
|
|
|
619 (isearch-highlight-all-update)
|
|
|
620 )
|
|
|
621
|
|
|
622
|
|
|
623 (defun isearch-done (&optional nopush edit)
|
|
|
624 ;; Called by all commands that terminate isearch-mode.
|
|
|
625 (let ((inhibit-quit t)) ; danger danger!
|
|
|
626 (if (and isearch-buffer (buffer-live-p isearch-buffer))
|
|
|
627 ;; Some loser process filter might have switched the window's
|
|
|
628 ;; buffer, so be sure to set these variables back in the
|
|
|
629 ;; buffer we frobbed them in. But only if the buffer is still
|
|
|
630 ;; alive.
|
|
|
631 (with-current-buffer isearch-buffer
|
|
|
632 (setq overriding-local-map nil)
|
|
|
633 ;; Use remove-hook instead of just setting it to our saved value
|
|
|
634 ;; in case some process filter has created a buffer and modified
|
|
|
635 ;; the pre-command-hook in that buffer... yeah, this is obscure,
|
|
|
636 ;; and yeah, I was getting screwed by it. -jwz
|
|
|
637 (remove-hook 'pre-command-hook 'isearch-pre-command-hook)
|
|
|
638 (set-keymap-parents isearch-mode-map nil)
|
|
|
639 (setq isearch-mode nil)
|
|
|
640 (redraw-modeline)
|
|
|
641 (isearch-dehighlight)
|
|
|
642 (isearch-highlight-all-cleanup)
|
|
|
643 (isearch-restore-invisible-extents nil nil)
|
|
|
644 ))
|
|
|
645
|
|
|
646 ;; it's not critical that this be inside inhibit-quit, but leaving
|
|
|
647 ;; things in small-window-mode would be bad.
|
|
|
648 (let ((found-start (window-start (selected-window)))
|
|
|
649 (found-point (point)))
|
|
|
650 (cond ((eq (selected-frame) isearch-selected-frame)
|
|
|
651 (set-window-configuration isearch-window-configuration)
|
|
|
652
|
|
|
653 (if isearch-small-window
|
|
|
654 (goto-char found-point)
|
|
|
655 ;; Exiting the save-window-excursion clobbers
|
|
|
656 ;; window-start; restore it.
|
|
|
657 (set-window-start (selected-window) found-start t))))
|
|
|
658 ;; If there was movement, mark the starting position.
|
|
|
659 ;; Maybe should test difference between and set mark iff > threshold.
|
|
|
660 (if (and (buffer-live-p isearch-buffer)
|
|
|
661 (/= (point isearch-buffer) isearch-opoint))
|
|
|
662 ;; #### FSF doesn't do this if the region is active. Should
|
|
|
663 ;; we do the same?
|
|
|
664 (progn
|
|
|
665 (push-mark isearch-opoint t nil isearch-buffer)
|
|
|
666 (or executing-kbd-macro (> (minibuffer-depth) 0)
|
|
|
667 (display-message 'command "Mark saved where search started")))))
|
|
|
668 (setq isearch-buffer nil)
|
|
|
669 ) ; inhibit-quit is t before here
|
|
|
670
|
|
|
671 (if (and (> (length isearch-string) 0) (not nopush))
|
|
|
672 ;; Update the ring data.
|
|
|
673 (isearch-update-ring isearch-string isearch-regexp))
|
|
|
674
|
|
|
675 (run-hooks 'isearch-mode-end-hook)
|
|
|
676
|
|
|
677 (and (not edit) isearch-recursive-edit (exit-recursive-edit)))
|
|
|
678
|
|
|
679 (defun isearch-update-ring (string &optional regexp)
|
|
|
680 "Add STRING to the beginning of the search ring.
|
|
|
681 REGEXP says which ring to use."
|
|
444
|
682 (if regexp
|
|
428
|
683 (if (or (null regexp-search-ring)
|
|
|
684 (not (string= string (car regexp-search-ring))))
|
|
|
685 (progn
|
|
|
686 (setq regexp-search-ring
|
|
|
687 (cons string regexp-search-ring))
|
|
|
688 (if (> (length regexp-search-ring) regexp-search-ring-max)
|
|
|
689 (setcdr (nthcdr (1- search-ring-max) regexp-search-ring)
|
|
|
690 nil))))
|
|
|
691 (if (or (null search-ring)
|
|
|
692 (not (string= string (car search-ring))))
|
|
|
693 (progn
|
|
|
694 (setq search-ring (cons string search-ring))
|
|
|
695 (if (> (length search-ring) search-ring-max)
|
|
|
696 (setcdr (nthcdr (1- search-ring-max) search-ring) nil))))))
|
|
|
697
|
|
|
698
|
|
|
699 ;;;====================================================
|
|
|
700 ;; Commands active while inside of the isearch minor mode.
|
|
|
701
|
|
|
702 (defun isearch-exit ()
|
|
|
703 "Exit search normally.
|
|
|
704 However, if this is the first command after starting incremental
|
|
|
705 search and `search-nonincremental-instead' is non-nil, do a
|
|
|
706 nonincremental search instead via `isearch-edit-string'."
|
|
|
707 (interactive)
|
|
|
708 (if (and search-nonincremental-instead
|
|
|
709 (= 0 (length isearch-string)))
|
|
|
710 (let ((isearch-nonincremental t)
|
|
|
711 ;; Highlighting only gets in the way of nonincremental
|
|
|
712 ;; search.
|
|
|
713 (search-highlight nil)
|
|
|
714 (isearch-highlight-all-matches nil))
|
|
|
715 (isearch-edit-string))
|
|
|
716 (isearch-done)))
|
|
|
717
|
|
|
718
|
|
|
719 (defun isearch-edit-string ()
|
|
|
720 "Edit the search string in the minibuffer.
|
|
|
721 The following additional command keys are active while editing.
|
|
|
722 \\<minibuffer-local-isearch-map>
|
|
|
723 \\[exit-minibuffer] to resume incremental searching with the edited string.
|
|
|
724 \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search.
|
|
|
725 \\[isearch-forward-exit-minibuffer] to resume isearching forward.
|
|
|
726 \\[isearch-reverse-exit-minibuffer] to resume isearching backward.
|
|
|
727 \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring.
|
|
|
728 \\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring.
|
|
|
729 \\[isearch-complete-edit] to complete the search string using the search ring.
|
|
|
730 \\<isearch-mode-map>
|
|
|
731 If first char entered is \\[isearch-yank-word], then do word search instead."
|
|
|
732
|
|
|
733 ;; This code is very hairy for several reasons, explained in the code.
|
|
|
734 ;; Mainly, isearch-mode must be terminated while editing and then restarted.
|
|
|
735 ;; If there were a way to catch any change of buffer from the minibuffer,
|
|
|
736 ;; this could be simplified greatly.
|
|
|
737 ;; Editing doesn't back up the search point. Should it?
|
|
|
738 (interactive)
|
|
|
739
|
|
|
740 (condition-case nil
|
|
|
741 (progn
|
|
|
742 (let ((isearch-nonincremental isearch-nonincremental)
|
|
|
743
|
|
|
744 ;; Locally bind all isearch global variables to protect them
|
|
|
745 ;; from recursive isearching.
|
|
|
746 ;; isearch-string -message and -forward are not bound
|
|
|
747 ;; so they may be changed. Instead, save the values.
|
|
|
748 (isearch-new-string isearch-string)
|
|
|
749 (isearch-new-message isearch-message)
|
|
|
750 (isearch-new-forward isearch-forward)
|
|
|
751 (isearch-new-word isearch-word)
|
|
|
752
|
|
|
753 (isearch-regexp isearch-regexp)
|
|
|
754 (isearch-op-fun isearch-op-fun)
|
|
|
755 (isearch-cmds isearch-cmds)
|
|
|
756 (isearch-success isearch-success)
|
|
|
757 (isearch-wrapped isearch-wrapped)
|
|
|
758 (isearch-barrier isearch-barrier)
|
|
|
759 (isearch-adjusted isearch-adjusted)
|
|
|
760 (isearch-fixed-case isearch-fixed-case)
|
|
|
761 (isearch-yank-flag isearch-yank-flag)
|
|
|
762 (isearch-invalid-regexp isearch-invalid-regexp)
|
|
|
763 (isearch-within-brackets isearch-within-brackets)
|
|
|
764 ;;; Don't bind this. We want isearch-search, below, to set it.
|
|
|
765 ;;; And the old value won't matter after that.
|
|
|
766 ;;; (isearch-other-end isearch-other-end)
|
|
|
767 (isearch-opoint isearch-opoint)
|
|
|
768 (isearch-slow-terminal-mode isearch-slow-terminal-mode)
|
|
|
769 (isearch-small-window isearch-small-window)
|
|
|
770 (isearch-recursive-edit isearch-recursive-edit)
|
|
|
771 (isearch-window-configuration (current-window-configuration))
|
|
|
772 (isearch-selected-frame (selected-frame))
|
|
|
773 )
|
|
|
774 ;; Actually terminate isearching until editing is done.
|
|
|
775 ;; This is so that the user can do anything without failure,
|
|
|
776 ;; like switch buffers and start another isearch, and return.
|
|
|
777 ;; (condition-case nil
|
|
|
778 (isearch-done t t)
|
|
|
779 ;;#### What does this mean? There is no such condition!
|
|
|
780 ;; (exit nil)) ; was recursive editing
|
|
|
781
|
|
|
782 (unwind-protect
|
|
|
783 (progn
|
|
|
784 ;; Fake the prompt message for the sake of
|
|
|
785 ;; next-command-event below.
|
|
|
786 (isearch-message)
|
|
|
787 ;; If the first character the user types when we
|
|
|
788 ;; prompt them for a string is the yank-word
|
|
|
789 ;; character, then go into word-search mode.
|
|
|
790 ;; Otherwise unread that character and read a string
|
|
|
791 ;; the normal way.
|
|
|
792 (let* ((cursor-in-echo-area t)
|
|
|
793 (event (next-command-event)))
|
|
|
794 (if (eq 'isearch-yank-word
|
|
|
795 (lookup-key isearch-mode-map (vector event)))
|
|
|
796 (setq isearch-word t;; so message-prefix is right
|
|
|
797 isearch-new-word t)
|
|
|
798 (setq unread-command-event event)))
|
|
|
799 (setq isearch-new-string
|
|
|
800 (read-from-minibuffer
|
|
|
801 (isearch-message-prefix nil isearch-nonincremental)
|
|
|
802 isearch-string
|
|
|
803 minibuffer-local-isearch-map
|
|
|
804 nil
|
|
|
805 't ;does its own history (but shouldn't)
|
|
|
806 )
|
|
|
807 isearch-new-message (mapconcat
|
|
|
808 'isearch-text-char-description
|
|
|
809 isearch-new-string "")))
|
|
|
810 ;; Always resume isearching by restarting it.
|
|
|
811 (isearch-mode isearch-forward
|
|
|
812 isearch-regexp
|
|
|
813 isearch-op-fun
|
|
|
814 isearch-recursive-edit
|
|
|
815 isearch-word)
|
|
|
816
|
|
|
817 ;; Copy new values in outer locals to isearch globals
|
|
|
818 (setq isearch-string isearch-new-string
|
|
|
819 isearch-message isearch-new-message
|
|
|
820 isearch-forward isearch-new-forward
|
|
|
821 isearch-word isearch-new-word))
|
|
|
822
|
|
|
823 ;; Empty isearch-string means use default.
|
|
|
824 (if (= 0 (length isearch-string))
|
|
|
825 (setq isearch-string (or (car (if isearch-regexp
|
|
|
826 regexp-search-ring
|
|
|
827 search-ring))
|
|
|
828 ""))))
|
|
|
829
|
|
|
830 ;; Reinvoke the pending search.
|
|
|
831 (isearch-push-state)
|
|
|
832 (isearch-search)
|
|
|
833 (isearch-update)
|
|
|
834 (if isearch-nonincremental (isearch-done)))
|
|
|
835
|
|
|
836 (quit ; handle abort-recursive-edit
|
|
|
837 (isearch-abort) ;; outside of let to restore outside global values
|
|
|
838 )))
|
|
|
839
|
|
|
840 (defun isearch-nonincremental-exit-minibuffer ()
|
|
|
841 (interactive)
|
|
|
842 (setq isearch-nonincremental t)
|
|
|
843 (exit-minibuffer))
|
|
|
844
|
|
|
845 (defun isearch-forward-exit-minibuffer ()
|
|
|
846 (interactive)
|
|
|
847 (setq isearch-new-forward t)
|
|
|
848 (exit-minibuffer))
|
|
|
849
|
|
|
850 (defun isearch-reverse-exit-minibuffer ()
|
|
|
851 (interactive)
|
|
|
852 (setq isearch-new-forward nil)
|
|
|
853 (exit-minibuffer))
|
|
|
854
|
|
|
855 (defun isearch-cancel ()
|
|
|
856 "Terminate the search and go back to the starting point."
|
|
|
857 (interactive)
|
|
|
858 (goto-char isearch-opoint)
|
|
|
859 (isearch-done t)
|
|
|
860 (signal 'quit '(isearch))) ; and pass on quit signal
|
|
|
861
|
|
|
862 (defun isearch-abort ()
|
|
|
863 "Abort incremental search mode if searching is successful, signaling quit.
|
|
|
864 Otherwise, revert to previous successful search and continue searching.
|
|
|
865 Use `isearch-exit' to quit without signaling."
|
|
|
866 (interactive)
|
|
|
867 ;; (ding) signal instead below, if quitting
|
|
|
868 (discard-input)
|
|
|
869 (if isearch-success
|
|
|
870 ;; If search is successful, move back to starting point
|
|
|
871 ;; and really do quit.
|
|
|
872 (progn (goto-char isearch-opoint)
|
|
|
873 (setq isearch-success nil)
|
|
|
874 (isearch-done t) ; exit isearch
|
|
|
875 (signal 'quit '(isearch))) ; and pass on quit signal
|
|
|
876 ;; If search is failing, or has an incomplete regexp,
|
|
|
877 ;; rub out until it is once more successful.
|
|
|
878 (while (or (not isearch-success) isearch-invalid-regexp)
|
|
|
879 (isearch-pop-state))
|
|
|
880 (isearch-update)))
|
|
|
881
|
|
|
882 (defun isearch-repeat (direction)
|
|
|
883 ;; Utility for isearch-repeat-forward and -backward.
|
|
|
884 (if (eq isearch-forward (eq direction 'forward))
|
|
|
885 ;; C-s in forward or C-r in reverse.
|
|
|
886 (if (equal isearch-string "")
|
|
|
887 ;; If search string is empty, use last one.
|
|
|
888 (setq isearch-string
|
|
|
889 (or (if isearch-regexp
|
|
|
890 (car regexp-search-ring)
|
|
|
891 (car search-ring))
|
|
|
892 "")
|
|
|
893 isearch-message
|
|
|
894 (mapconcat 'isearch-text-char-description
|
|
|
895 isearch-string ""))
|
|
|
896 ;; If already have what to search for, repeat it.
|
|
|
897 (or isearch-success
|
|
|
898 (progn
|
|
|
899 (goto-char (if isearch-forward (point-min) (point-max)))
|
|
|
900 (setq isearch-wrapped t))))
|
|
|
901 ;; C-s in reverse or C-r in forward, change direction.
|
|
|
902 (setq isearch-forward (not isearch-forward)))
|
|
|
903
|
|
|
904 (setq isearch-barrier (point)) ; For subsequent \| if regexp.
|
|
|
905
|
|
|
906 (if (equal isearch-string "")
|
|
|
907 (setq isearch-success t)
|
|
|
908 (if (and isearch-success (equal (match-end 0) (match-beginning 0))
|
|
|
909 (not isearch-just-started))
|
|
|
910 ;; If repeating a search that found
|
|
|
911 ;; an empty string, ensure we advance.
|
|
|
912 (if (if isearch-forward (eobp) (bobp))
|
|
|
913 ;; If there's nowhere to advance to, fail (and wrap next time).
|
|
|
914 (progn
|
|
|
915 (setq isearch-success nil)
|
|
|
916 (and executing-kbd-macro
|
|
|
917 (not defining-kbd-macro)
|
|
|
918 (isearch-done))
|
|
|
919 (ding nil 'isearch-failed))
|
|
|
920 (forward-char (if isearch-forward 1 -1))
|
|
|
921 (isearch-search))
|
|
|
922 (isearch-search)))
|
|
|
923
|
|
|
924 (isearch-push-state)
|
|
|
925 (isearch-update))
|
|
|
926
|
|
|
927 (defun isearch-repeat-forward ()
|
|
|
928 "Repeat incremental search forwards."
|
|
|
929 (interactive)
|
|
|
930 (isearch-repeat 'forward))
|
|
|
931
|
|
|
932 (defun isearch-repeat-backward ()
|
|
|
933 "Repeat incremental search backwards."
|
|
|
934 (interactive)
|
|
|
935 (isearch-repeat 'backward))
|
|
|
936
|
|
|
937 (defun isearch-toggle-regexp ()
|
|
|
938 "Toggle regexp searching on or off."
|
|
|
939 ;; The status stack is left unchanged.
|
|
|
940 (interactive)
|
|
|
941 (setq isearch-regexp (not isearch-regexp))
|
|
|
942 (if isearch-regexp (setq isearch-word nil))
|
|
|
943 (isearch-update))
|
|
|
944
|
|
|
945 (defun isearch-toggle-case-fold ()
|
|
|
946 "Toggle case folding in searching on or off."
|
|
|
947 (interactive)
|
|
|
948 (setq isearch-case-fold-search (if isearch-case-fold-search nil 'yes)
|
|
|
949 isearch-fixed-case t)
|
|
|
950 (lmessage 'progress "%s%s [case %ssensitive]"
|
|
|
951 (isearch-message-prefix)
|
|
|
952 isearch-message
|
|
|
953 (if isearch-case-fold-search "in" ""))
|
|
|
954 (setq isearch-adjusted t)
|
|
|
955 ;; Update the highlighting here so that it gets done before the
|
|
|
956 ;; one-second pause.
|
|
|
957 (isearch-highlight-all-update)
|
|
|
958 (sit-for 1)
|
|
|
959 (isearch-update))
|
|
|
960
|
|
|
961 (defun isearch-delete-char ()
|
|
|
962 "Discard last input item and move point back.
|
|
|
963 If no previous match was done, just beep."
|
|
|
964 (interactive)
|
|
|
965 (if (null (cdr isearch-cmds))
|
|
|
966 (ding nil 'isearch-quit)
|
|
|
967 (isearch-pop-state))
|
|
|
968 (isearch-update))
|
|
|
969
|
|
|
970 (defun isearch-help-or-delete-char ()
|
|
|
971 "Show Isearch help or delete backward in the search string.
|
|
|
972 Deletes when `delete-key-deletes-forward' is t and C-h is used for deleting
|
|
|
973 backwards."
|
|
|
974 (interactive)
|
|
|
975 (if (and delete-key-deletes-forward
|
|
|
976 (case (device-type)
|
|
502
|
977 ('tty (eq (declare-boundp tty-erase-char) ?\C-h))
|
|
|
978 ('x (not (declare-fboundp
|
|
|
979 (x-keysym-on-keyboard-sans-modifiers-p 'backspace))))))
|
|
428
|
980 (isearch-delete-char)
|
|
|
981 (isearch-mode-help)))
|
|
|
982
|
|
|
983 ;; This is similar to FSF isearch-yank-string, but more general.
|
|
|
984 (defun isearch-yank (chunk)
|
|
|
985 ;; Helper for isearch-yank-* functions. CHUNK can be a string or a
|
|
|
986 ;; function.
|
|
|
987 (let ((word (if (stringp chunk)
|
|
|
988 chunk
|
|
|
989 (save-excursion
|
|
|
990 (and (not isearch-forward) isearch-other-end
|
|
|
991 (goto-char isearch-other-end))
|
|
|
992 (buffer-substring
|
|
|
993 (point)
|
|
|
994 (progn
|
|
|
995 (funcall chunk)
|
|
|
996 (point)))))))
|
|
|
997 ;; if configured so that typing upper-case characters turns off case
|
|
|
998 ;; folding, then downcase the string so that yanking an upper-case
|
|
|
999 ;; word doesn't mess with case-foldedness.
|
|
|
1000 (if (and search-caps-disable-folding isearch-case-fold-search)
|
|
|
1001 (setq word (downcase word)))
|
|
|
1002 (if isearch-regexp (setq word (regexp-quote word)))
|
|
|
1003 (setq isearch-string (concat isearch-string word)
|
|
|
1004 isearch-message
|
|
|
1005 (concat isearch-message
|
|
|
1006 (mapconcat 'isearch-text-char-description
|
|
|
1007 word ""))
|
|
|
1008 ;; Don't move cursor in reverse search.
|
|
|
1009 isearch-yank-flag t))
|
|
|
1010 (isearch-search-and-update))
|
|
|
1011
|
|
|
1012 (defun isearch-yank-word ()
|
|
|
1013 "Pull next word from buffer into search string."
|
|
|
1014 (interactive)
|
|
|
1015 (isearch-yank (function (lambda () (forward-word 1)))))
|
|
|
1016
|
|
|
1017 (defun isearch-yank-line ()
|
|
|
1018 "Pull rest of line from buffer into search string."
|
|
|
1019 (interactive)
|
|
|
1020 (isearch-yank 'end-of-line))
|
|
|
1021
|
|
|
1022 (defun isearch-yank-kill ()
|
|
|
1023 "Pull rest of line from kill ring into search string."
|
|
|
1024 (interactive)
|
|
|
1025 (isearch-yank (current-kill 0)))
|
|
|
1026
|
|
|
1027 (defun isearch-yank-sexp ()
|
|
|
1028 "Pull next expression from buffer into search string."
|
|
|
1029 (interactive)
|
|
|
1030 (isearch-yank 'forward-sexp))
|
|
|
1031
|
|
|
1032 (defun isearch-yank-selection ()
|
|
|
1033 "Pull the current selection into the search string."
|
|
|
1034 (interactive)
|
|
|
1035 (isearch-yank (get-selection)))
|
|
|
1036
|
|
|
1037 (defun isearch-yank-clipboard ()
|
|
|
1038 "Pull the current clipboard selection into the search string."
|
|
|
1039 (interactive)
|
|
|
1040 (isearch-yank (get-clipboard)))
|
|
|
1041
|
|
|
1042 (defun isearch-fix-case ()
|
|
|
1043 ;; The commented-out (and ...) form implies that, once
|
|
|
1044 ;; isearch-case-fold-search becomes nil due to a capital letter
|
|
|
1045 ;; typed in, it can never be restored to the original value. In
|
|
|
1046 ;; that case, it's impossible to revert a case-sensitive search back
|
|
|
1047 ;; to case-insensitive.
|
|
|
1048 (if ;(and isearch-case-fold-search search-caps-disable-folding)
|
|
|
1049 (and case-fold-search
|
|
|
1050 ;; Make sure isearch-toggle-case-fold works.
|
|
|
1051 (not isearch-fixed-case)
|
|
|
1052 search-caps-disable-folding)
|
|
|
1053 (setq isearch-case-fold-search
|
|
|
1054 (no-upper-case-p isearch-string isearch-regexp)))
|
|
|
1055 (setq isearch-mode (if case-fold-search
|
|
|
1056 (if isearch-case-fold-search
|
|
|
1057 " Isearch" ;As God Intended Mode
|
|
|
1058 " ISeARch") ;Warn about evil case via StuDLYcAps.
|
|
|
1059 " Isearch")))
|
|
|
1060
|
|
|
1061 (defun isearch-search-and-update ()
|
|
|
1062 ;; Do the search and update the display.
|
|
|
1063 (if (and (not isearch-success)
|
|
|
1064 ;; unsuccessful regexp search may become
|
|
|
1065 ;; successful by addition of characters which
|
|
|
1066 ;; make isearch-string valid
|
|
|
1067 (not isearch-regexp))
|
|
|
1068 nil
|
|
|
1069 ;; In reverse search, adding stuff at
|
|
|
1070 ;; the end may cause zero or many more chars to be
|
|
|
1071 ;; matched, in the string following point.
|
|
|
1072 ;; Allow all those possibilities without moving point as
|
|
|
1073 ;; long as the match does not extend past search origin.
|
|
|
1074 (if (and (not isearch-forward) (not isearch-adjusted)
|
|
|
1075 (condition-case ()
|
|
|
1076 (progn
|
|
|
1077 (isearch-fix-case)
|
|
|
1078 (let ((case-fold-search isearch-case-fold-search))
|
|
|
1079 (looking-at (if isearch-regexp isearch-string
|
|
|
1080 (regexp-quote isearch-string)))))
|
|
|
1081 (error nil))
|
|
|
1082 (or isearch-yank-flag
|
|
|
1083 (<= (match-end 0)
|
|
|
1084 (min isearch-opoint isearch-barrier))))
|
|
|
1085 (setq isearch-success t
|
|
|
1086 isearch-invalid-regexp nil
|
|
|
1087 isearch-within-brackets nil
|
|
|
1088 isearch-other-end (match-end 0))
|
|
|
1089 ;; Not regexp, not reverse, or no match at point.
|
|
|
1090 (if (and isearch-other-end (not isearch-adjusted))
|
|
|
1091 (goto-char (if isearch-forward isearch-other-end
|
|
|
1092 (min isearch-opoint
|
|
|
1093 isearch-barrier
|
|
|
1094 (1+ isearch-other-end)))))
|
|
|
1095 (isearch-search)
|
|
|
1096 ))
|
|
|
1097 (isearch-push-state)
|
|
|
1098 (if isearch-op-fun (funcall isearch-op-fun))
|
|
|
1099 (isearch-update))
|
|
|
1100
|
|
|
1101
|
|
|
1102 ;; *, ?, and | chars can make a regexp more liberal.
|
|
|
1103 ;; They can make a regexp match sooner or make it succeed instead of failing.
|
|
|
1104 ;; So go back to place last successful search started
|
|
|
1105 ;; or to the last ^S/^R (barrier), whichever is nearer.
|
|
|
1106 ;; + needs no special handling because the string must match at least once.
|
|
|
1107
|
|
|
1108 (defun isearch-*-char ()
|
|
|
1109 "Handle * and ? specially in regexps."
|
|
|
1110 (interactive)
|
|
|
1111 (if isearch-regexp
|
|
|
1112 (let ((idx (length isearch-string)))
|
|
|
1113 (while (and (> idx 0)
|
|
|
1114 (eq (aref isearch-string (1- idx)) ?\\))
|
|
|
1115 (setq idx (1- idx)))
|
|
|
1116 (when (= (mod (- (length isearch-string) idx) 2) 0)
|
|
|
1117 (setq isearch-adjusted t)
|
|
|
1118 ;; Get the isearch-other-end from before the last search.
|
|
|
1119 ;; We want to start from there,
|
|
|
1120 ;; so that we don't retreat farther than that.
|
|
|
1121 ;; (car isearch-cmds) is after last search;
|
|
|
1122 ;; (car (cdr isearch-cmds)) is from before it.
|
|
|
1123 (let ((cs (nth 5 (car (cdr isearch-cmds)))))
|
|
|
1124 (setq cs (or cs isearch-barrier))
|
|
|
1125 (goto-char
|
|
|
1126 (if isearch-forward
|
|
|
1127 (max cs isearch-barrier)
|
|
|
1128 (min cs isearch-barrier)))))))
|
|
|
1129 (isearch-process-search-char last-command-event))
|
|
|
1130
|
|
|
1131
|
|
|
1132
|
|
|
1133 (defun isearch-|-char ()
|
|
|
1134 "If in regexp search, jump to the barrier."
|
|
|
1135 (interactive)
|
|
|
1136 (if isearch-regexp
|
|
|
1137 (progn
|
|
|
1138 (setq isearch-adjusted t)
|
|
|
1139 (goto-char isearch-barrier)))
|
|
|
1140 (isearch-process-search-char last-command-event))
|
|
|
1141
|
|
|
1142 ;; FSF:
|
|
|
1143 ;(defalias 'isearch-other-control-char 'isearch-other-meta-char)
|
|
|
1144 ;
|
|
|
1145 ;(defun isearch-other-meta-char ()
|
|
|
1146 ;...
|
|
|
1147 ;
|
|
|
1148
|
|
|
1149 (defun isearch-quote-char ()
|
|
|
1150 "Quote special characters for incremental search."
|
|
|
1151 (interactive)
|
|
|
1152 ;; #### Here FSF does some special conversion of chars in 0200-0377
|
|
|
1153 ;; range. Maybe we should do the same.
|
|
|
1154 (isearch-process-search-char (read-quoted-char (isearch-message t))))
|
|
|
1155
|
|
|
1156 (defun isearch-return-char ()
|
|
|
1157 "Convert return into newline for incremental search.
|
|
|
1158 Obsolete."
|
|
|
1159 (interactive)
|
|
|
1160 (isearch-process-search-char ?\n))
|
|
|
1161
|
|
|
1162 (defun isearch-printing-char ()
|
|
|
1163 "Add this ordinary printing character to the search string and search."
|
|
|
1164 (interactive)
|
|
|
1165 (let ((event last-command-event))
|
|
|
1166 ;; If we are called by isearch-whitespace-chars because the
|
|
|
1167 ;; context disallows whitespace search (e.g. within brackets),
|
|
|
1168 ;; replace M-SPC with a space. FSF has similar code.
|
|
|
1169 (and (eq this-command 'isearch-whitespace-chars)
|
|
|
1170 (null (event-to-character event))
|
|
|
1171 (setq event (character-to-event ?\ )))
|
|
|
1172 (isearch-process-search-char event)))
|
|
|
1173
|
|
|
1174 (defun isearch-whitespace-chars ()
|
|
|
1175 "Match all whitespace chars, if in regexp mode."
|
|
|
1176 ;; FSF docstring adds: "If you want to search for just a space, type
|
|
|
1177 ;; C-q SPC." But we don't need the addition because we have a
|
|
|
1178 ;; different (better) default for the variable.
|
|
|
1179 (interactive)
|
|
|
1180 (if isearch-regexp
|
|
|
1181 (if (and search-whitespace-regexp (not isearch-within-brackets)
|
|
|
1182 (not isearch-invalid-regexp))
|
|
|
1183 (isearch-process-search-string search-whitespace-regexp " ")
|
|
|
1184 (isearch-printing-char))
|
|
|
1185 (progn
|
|
|
1186 ;; This way of doing word search doesn't correctly extend current search.
|
|
|
1187 ;; (setq isearch-word t)
|
|
|
1188 ;; (setq isearch-adjusted t)
|
|
|
1189 ;; (goto-char isearch-barrier)
|
|
|
1190 (isearch-printing-char))))
|
|
|
1191
|
|
|
1192 (defun isearch-process-search-char (char)
|
|
|
1193 ;; Append the char to the search string, update the message and re-search.
|
|
|
1194 (isearch-process-search-string (isearch-char-to-string char)
|
|
|
1195 (isearch-text-char-description char)))
|
|
|
1196
|
|
|
1197 (defun isearch-process-search-string (string message)
|
|
|
1198 (setq isearch-string (concat isearch-string string)
|
|
|
1199 isearch-message (concat isearch-message message))
|
|
|
1200 (isearch-search-and-update))
|
|
|
1201
|
|
|
1202
|
|
|
1203 ;;===========================================================
|
|
|
1204 ;; Search Ring
|
|
|
1205
|
|
|
1206 (defun isearch-ring-adjust1 (advance)
|
|
|
1207 ;; Helper for isearch-ring-adjust
|
|
|
1208 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
|
|
|
1209 (length (length ring))
|
|
|
1210 (yank-pointer-name (if isearch-regexp
|
|
|
1211 'regexp-search-ring-yank-pointer
|
|
|
1212 'search-ring-yank-pointer))
|
|
|
1213 (yank-pointer (eval yank-pointer-name)))
|
|
|
1214 (if (zerop length)
|
|
|
1215 ()
|
|
|
1216 (set yank-pointer-name
|
|
|
1217 (setq yank-pointer
|
|
|
1218 (mod (+ (or yank-pointer 0)
|
|
442
|
1219 ;; XEmacs change
|
|
|
1220 (if advance -1 (if yank-pointer 1 0)))
|
|
428
|
1221 length)))
|
|
|
1222 (setq isearch-string (nth yank-pointer ring)
|
|
|
1223 isearch-message (mapconcat 'isearch-text-char-description
|
|
|
1224 isearch-string "")))))
|
|
|
1225
|
|
|
1226 (defun isearch-ring-adjust (advance)
|
|
|
1227 ;; Helper for isearch-ring-advance and isearch-ring-retreat
|
|
|
1228 ; (if (cdr isearch-cmds) ;; is there more than one thing on stack?
|
|
|
1229 ; (isearch-pop-state))
|
|
|
1230 (isearch-ring-adjust1 advance)
|
|
|
1231 (if search-ring-update
|
|
|
1232 (progn
|
|
|
1233 (isearch-search)
|
|
|
1234 (isearch-update))
|
|
|
1235 (isearch-edit-string)
|
|
|
1236 )
|
|
|
1237 (isearch-push-state))
|
|
|
1238
|
|
|
1239 (defun isearch-ring-advance ()
|
|
|
1240 "Advance to the next search string in the ring."
|
|
|
1241 ;; This could be more general to handle a prefix arg, but who would use it.
|
|
|
1242 (interactive)
|
|
|
1243 (isearch-ring-adjust 'advance))
|
|
|
1244
|
|
|
1245 (defun isearch-ring-retreat ()
|
|
|
1246 "Retreat to the previous search string in the ring."
|
|
|
1247 (interactive)
|
|
|
1248 (isearch-ring-adjust nil))
|
|
|
1249
|
|
|
1250 (defun isearch-ring-advance-edit (n)
|
|
|
1251 "Insert the next element of the search history into the minibuffer."
|
|
|
1252 (interactive "p")
|
|
|
1253 (let* ((yank-pointer-name (if isearch-regexp
|
|
|
1254 'regexp-search-ring-yank-pointer
|
|
|
1255 'search-ring-yank-pointer))
|
|
|
1256 (yank-pointer (eval yank-pointer-name))
|
|
|
1257 (ring (if isearch-regexp regexp-search-ring search-ring))
|
|
|
1258 (length (length ring)))
|
|
|
1259 (if (zerop length)
|
|
|
1260 ()
|
|
|
1261 (set yank-pointer-name
|
|
|
1262 (setq yank-pointer
|
|
|
1263 (mod (- (or yank-pointer 0) n)
|
|
|
1264 length)))
|
|
|
1265
|
|
|
1266 (erase-buffer)
|
|
|
1267 (insert (nth yank-pointer ring))
|
|
|
1268 (goto-char (point-max)))))
|
|
|
1269
|
|
|
1270 (defun isearch-ring-retreat-edit (n)
|
|
|
1271 "Inserts the previous element of the search history into the minibuffer."
|
|
|
1272 (interactive "p")
|
|
|
1273 (isearch-ring-advance-edit (- n)))
|
|
|
1274
|
|
|
1275 ;; Merging note: FSF comments out these functions and implements them
|
|
|
1276 ;; differently (see above), presumably because the versions below mess
|
|
|
1277 ;; with isearch-string, while what we really want them to do is simply
|
|
|
1278 ;; to insert the correct string to the minibuffer.
|
|
|
1279
|
|
|
1280 ;;(defun isearch-ring-adjust-edit (advance)
|
|
|
1281 ;; "Use the next or previous search string in the ring while in minibuffer."
|
|
|
1282 ;; (isearch-ring-adjust1 advance)
|
|
|
1283 ;; (erase-buffer)
|
|
|
1284 ;; (insert isearch-string))
|
|
|
1285
|
|
|
1286 ;;(defun isearch-ring-advance-edit ()
|
|
|
1287 ;; (interactive)
|
|
|
1288 ;; (isearch-ring-adjust-edit 'advance))
|
|
|
1289
|
|
|
1290 ;;(defun isearch-ring-retreat-edit ()
|
|
|
1291 ;; "Retreat to the previous search string in the ring while in the minibuffer."
|
|
|
1292 ;; (interactive)
|
|
|
1293 ;; (isearch-ring-adjust-edit nil))
|
|
|
1294
|
|
|
1295
|
|
|
1296 (defun isearch-complete1 ()
|
|
|
1297 ;; Helper for isearch-complete and isearch-complete-edit
|
|
|
1298 ;; Return t if completion OK, nil if no completion exists.
|
|
|
1299 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
|
|
|
1300 (alist (mapcar (function (lambda (string) (list string))) ring))
|
|
|
1301 (completion-ignore-case case-fold-search)
|
|
|
1302 (completion (try-completion isearch-string alist)))
|
|
|
1303 (cond
|
|
|
1304 ((eq completion t)
|
|
|
1305 ;; isearch-string stays the same
|
|
|
1306 t)
|
|
|
1307 ((or completion ; not nil, must be a string
|
|
|
1308 (= 0 (length isearch-string))) ; shouldn't have to say this
|
|
|
1309 (if (equal completion isearch-string) ;; no extension?
|
|
|
1310 (progn
|
|
|
1311 (if completion-auto-help
|
|
|
1312 (with-output-to-temp-buffer "*Isearch completions*"
|
|
|
1313 (display-completion-list
|
|
|
1314 (all-completions isearch-string alist))))
|
|
|
1315 t)
|
|
|
1316 (and completion
|
|
|
1317 (setq isearch-string completion))))
|
|
|
1318 (t
|
|
|
1319 (temp-minibuffer-message "No completion")
|
|
|
1320 nil))))
|
|
|
1321
|
|
|
1322 (defun isearch-complete ()
|
|
|
1323 "Complete the search string from the strings on the search ring.
|
|
|
1324 The completed string is then editable in the minibuffer.
|
|
|
1325 If there is no completion possible, say so and continue searching."
|
|
|
1326 (interactive)
|
|
|
1327 (if (isearch-complete1)
|
|
|
1328 (isearch-edit-string)
|
|
|
1329 ;; else
|
|
|
1330 (sit-for 1)
|
|
|
1331 (isearch-update)))
|
|
|
1332
|
|
|
1333 (defun isearch-complete-edit ()
|
|
|
1334 "Same as `isearch-complete' except in the minibuffer."
|
|
|
1335 (interactive)
|
|
|
1336 (setq isearch-string (buffer-string))
|
|
|
1337 (if (isearch-complete1)
|
|
|
1338 (progn
|
|
|
1339 (erase-buffer)
|
|
|
1340 (insert isearch-string))))
|
|
|
1341
|
|
|
1342
|
|
|
1343 ;;;==============================================================
|
|
|
1344 ;; The search status stack.
|
|
|
1345
|
|
|
1346 (defun isearch-top-state ()
|
|
|
1347 (let ((cmd (car isearch-cmds)))
|
|
|
1348 ;; #### Grr, this is so error-prone. If you add something to
|
|
440
|
1349 ;; isearch-push-state, don't forget to update this. I thought I'd
|
|
428
|
1350 ;; make a list of variables, and just do (mapcar* #'set vars
|
|
|
1351 ;; values), but the (point) thing would spoil it, leaving to more
|
|
|
1352 ;; complication.
|
|
|
1353 (setq isearch-string (car cmd)
|
|
|
1354 isearch-message (car (cdr cmd))
|
|
|
1355 isearch-success (nth 3 cmd)
|
|
|
1356 isearch-forward (nth 4 cmd)
|
|
|
1357 isearch-other-end (nth 5 cmd)
|
|
|
1358 isearch-word (nth 6 cmd)
|
|
|
1359 isearch-invalid-regexp (nth 7 cmd)
|
|
|
1360 isearch-wrapped (nth 8 cmd)
|
|
|
1361 isearch-barrier (nth 9 cmd)
|
|
|
1362 isearch-within-brackets (nth 10 cmd))
|
|
|
1363 (goto-char (car (cdr (cdr cmd))))))
|
|
|
1364
|
|
|
1365 (defun isearch-pop-state ()
|
|
|
1366 (pop isearch-cmds)
|
|
|
1367 (isearch-top-state)
|
|
|
1368
|
|
|
1369 ;; Make sure isearch-case-fold-search gets the correct value. FSF
|
|
|
1370 ;; simply stores isearch-case-fold-search to isearch-cmds. We
|
|
|
1371 ;; should probably do the same.
|
|
|
1372 (isearch-fix-case)
|
|
|
1373
|
|
|
1374 ;; Here, as well as in isearch-search we must deal with the point
|
|
|
1375 ;; landing at an invisible area which may need unhiding.
|
|
|
1376 (if (or (not (eq search-invisible 'open))
|
|
|
1377 (not isearch-hide-immediately))
|
|
|
1378 ;; If search-invisible is t, invisible text is just like any
|
|
|
1379 ;; other text. If it is nil, it is always skipped and we can't
|
|
|
1380 ;; land inside. In both cases, we don't need to do anything.
|
|
|
1381 ;;
|
|
|
1382 ;; Similarly, if isearch-hide-immediately is nil, needn't
|
|
|
1383 ;; re-hide the area here, and neither can we land back into a
|
|
|
1384 ;; hidden one.
|
|
|
1385 nil
|
|
|
1386 (when isearch-other-end
|
|
|
1387 ;; This will unhide the extents.
|
|
|
1388 (isearch-range-invisible (point) isearch-other-end))
|
|
|
1389 (isearch-restore-invisible-extents (point)
|
|
|
1390 (or isearch-other-end (point)))))
|
|
|
1391
|
|
|
1392 (defun isearch-push-state ()
|
|
|
1393 (setq isearch-cmds
|
|
|
1394 (cons (list isearch-string isearch-message (point)
|
|
|
1395 isearch-success isearch-forward isearch-other-end
|
|
|
1396 isearch-word
|
|
|
1397 isearch-invalid-regexp isearch-wrapped isearch-barrier
|
|
|
1398 isearch-within-brackets)
|
|
|
1399 isearch-cmds)))
|
|
|
1400
|
|
|
1401
|
|
|
1402 ;;;==================================================================
|
|
|
1403 ;; Message string
|
|
|
1404
|
|
|
1405 (defun isearch-message (&optional c-q-hack ellipsis)
|
|
|
1406 ;; Generate and print the message string.
|
|
|
1407 (let ((cursor-in-echo-area ellipsis)
|
|
|
1408 (m (concat
|
|
|
1409 (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental)
|
|
|
1410 isearch-message
|
|
|
1411 (isearch-message-suffix c-q-hack ellipsis)
|
|
|
1412 )))
|
|
|
1413 (if c-q-hack
|
|
|
1414 m
|
|
|
1415 (display-message 'progress (format "%s" m)))))
|
|
|
1416
|
|
|
1417 (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental)
|
|
|
1418 ;; If about to search, and previous search regexp was invalid,
|
|
|
1419 ;; check that it still is. If it is valid now,
|
|
|
1420 ;; let the message we display while searching say that it is valid.
|
|
|
1421 (and isearch-invalid-regexp ellipsis
|
|
|
1422 (condition-case ()
|
|
|
1423 (progn (re-search-forward isearch-string (point) t)
|
|
|
1424 (setq isearch-invalid-regexp nil
|
|
|
1425 isearch-within-brackets nil))
|
|
|
1426 (error nil)))
|
|
|
1427 ;; If currently failing, display no ellipsis.
|
|
|
1428 (or isearch-success (setq ellipsis nil))
|
|
|
1429 ;; #### - ! Emacs assembles strings all over the place, they can't
|
|
|
1430 ;; all be internationalized in the manner proposed below... Add an
|
|
|
1431 ;; explicit call to `gettext' and have the string snarfer pluck the
|
|
|
1432 ;; english strings out of the comment below. XEmacs is on a
|
|
|
1433 ;; purespace diet! -Stig
|
|
|
1434
|
|
|
1435 ;; The comment below is dead and buried, but it can be rebuilt if
|
|
|
1436 ;; necessary. -hniksic
|
|
|
1437 (let ((m (concat (if isearch-success nil "failing ")
|
|
|
1438 (if (and isearch-wrapped
|
|
|
1439 (if isearch-forward
|
|
|
1440 (> (point) isearch-opoint)
|
|
|
1441 (< (point) isearch-opoint)))
|
|
|
1442 "overwrapped "
|
|
|
1443 (if isearch-wrapped "wrapped "))
|
|
|
1444 (if isearch-word "word ")
|
|
|
1445 (if isearch-regexp "regexp ")
|
|
|
1446 (if nonincremental "search" "I-search")
|
|
|
1447 (if isearch-forward nil " backward")
|
|
|
1448 ": "
|
|
|
1449 )))
|
|
|
1450 (aset m 0 (upcase (aref m 0)))
|
|
|
1451 (gettext m)))
|
|
|
1452
|
|
|
1453 (defun isearch-message-suffix (&optional c-q-hack ellipsis)
|
|
|
1454 (concat (if c-q-hack "^Q" "")
|
|
|
1455 (if isearch-invalid-regexp
|
|
|
1456 (concat " [" isearch-invalid-regexp "]")
|
|
|
1457 "")))
|
|
|
1458
|
|
|
1459 ;;;(let ((i (logior (if isearch-success 32 0)
|
|
|
1460 ;;; (if isearch-wrapped 16 0)
|
|
|
1461 ;;; (if isearch-word 8 0)
|
|
|
1462 ;;; (if isearch-regexp 4 0)
|
|
|
1463 ;;; (if nonincremental 2 0)
|
|
|
1464 ;;; (if isearch-forward 1 0))))
|
|
|
1465 ;;; (cond
|
|
|
1466 ;;; ((= i 63) (gettext "Wrapped word regexp search: ")) ; 111111
|
|
|
1467 ;;; ...and so on, ad nauseam...
|
|
|
1468 ;;; ((= i 0) (gettext "Failing I-search backward: ")) ; 000000
|
|
|
1469 ;;; (t (error "Something's rotten")))))
|
|
|
1470
|
|
|
1471
|
|
|
1472 ;;;========================================================
|
|
|
1473 ;;; Exiting
|
|
|
1474
|
|
|
1475 (put 'isearch-printing-char 'isearch-command t)
|
|
|
1476 (put 'isearch-return-char 'isearch-command t)
|
|
|
1477 (put 'isearch-repeat-forward 'isearch-command t)
|
|
|
1478 (put 'isearch-repeat-backward 'isearch-command t)
|
|
|
1479 (put 'isearch-delete-char 'isearch-command t)
|
|
|
1480 (put 'isearch-help-or-delete-char 'isearch-command t)
|
|
|
1481 (put 'isearch-cancel 'isearch-command t)
|
|
|
1482 (put 'isearch-abort 'isearch-command t)
|
|
|
1483 (put 'isearch-quote-char 'isearch-command t)
|
|
|
1484 (put 'isearch-exit 'isearch-command t)
|
|
|
1485 (put 'isearch-printing-char 'isearch-command t)
|
|
|
1486 (put 'isearch-printing-char 'isearch-command t)
|
|
|
1487 (put 'isearch-yank-word 'isearch-command t)
|
|
|
1488 (put 'isearch-yank-line 'isearch-command t)
|
|
|
1489 (put 'isearch-yank-kill 'isearch-command t)
|
|
|
1490 (put 'isearch-yank-sexp 'isearch-command t)
|
|
|
1491 (put 'isearch-*-char 'isearch-command t)
|
|
|
1492 (put 'isearch-*-char 'isearch-command t)
|
|
|
1493 (put 'isearch-|-char 'isearch-command t)
|
|
|
1494 (put 'isearch-toggle-regexp 'isearch-command t)
|
|
|
1495 (put 'isearch-toggle-case-fold 'isearch-command t)
|
|
|
1496 (put 'isearch-edit-string 'isearch-command t)
|
|
|
1497 (put 'isearch-mode-help 'isearch-command t)
|
|
|
1498 (put 'isearch-ring-advance 'isearch-command t)
|
|
|
1499 (put 'isearch-ring-retreat 'isearch-command t)
|
|
|
1500 (put 'isearch-ring-advance-edit 'isearch-command t)
|
|
|
1501 (put 'isearch-ring-retreat-edit 'isearch-command t)
|
|
|
1502 (put 'isearch-whitespace-chars 'isearch-command t)
|
|
|
1503 (put 'isearch-complete 'isearch-command t)
|
|
|
1504 (put 'isearch-complete-edit 'isearch-command t)
|
|
|
1505 (put 'isearch-edit-string 'isearch-command t)
|
|
|
1506 (put 'isearch-toggle-regexp 'isearch-command t)
|
|
|
1507 (put 'isearch-forward-exit-minibuffer 'isearch-command t)
|
|
|
1508 (put 'isearch-reverse-exit-minibuffer 'isearch-command t)
|
|
|
1509 (put 'isearch-nonincremental-exit-minibuffer 'isearch-command t)
|
|
|
1510 (put 'isearch-yank-selection 'isearch-command t)
|
|
|
1511 (put 'isearch-yank-clipboard 'isearch-command t)
|
|
|
1512 (put 'isearch-yank-x-selection 'isearch-command t)
|
|
|
1513 (put 'isearch-yank-x-clipboard 'isearch-command t)
|
|
|
1514
|
|
|
1515 ;; scrolling the scrollbar should not terminate isearch.
|
|
|
1516
|
|
|
1517 ;; vertical scrollbar:
|
|
|
1518 (put 'scrollbar-line-up 'isearch-command t)
|
|
|
1519 (put 'scrollbar-line-down 'isearch-command t)
|
|
|
1520 (put 'scrollbar-page-up 'isearch-command t)
|
|
|
1521 (put 'scrollbar-page-down 'isearch-command t)
|
|
|
1522 (put 'scrollbar-to-top 'isearch-command t)
|
|
|
1523 (put 'scrollbar-to-bottom 'isearch-command t)
|
|
|
1524 (put 'scrollbar-vertical-drag 'isearch-command t)
|
|
|
1525
|
|
|
1526 ;; horizontal scrollbar:
|
|
|
1527 (put 'scrollbar-char-left 'isearch-command t)
|
|
|
1528 (put 'scrollbar-char-right 'isearch-command t)
|
|
|
1529 (put 'scrollbar-page-left 'isearch-command t)
|
|
|
1530 (put 'scrollbar-page-right 'isearch-command t)
|
|
|
1531 (put 'scrollbar-to-left 'isearch-command t)
|
|
|
1532 (put 'scrollbar-to-right 'isearch-command t)
|
|
|
1533 (put 'scrollbar-horizontal-drag 'isearch-command t)
|
|
|
1534
|
|
|
1535 (defun isearch-pre-command-hook ()
|
|
|
1536 ;;
|
|
|
1537 ;; For use as the value of `pre-command-hook' when isearch-mode is active.
|
|
|
1538 ;; If the command about to be executed is not one of the isearch commands,
|
|
|
1539 ;; then isearch-mode is turned off before that command is executed.
|
|
|
1540 ;;
|
|
|
1541 ;; If the command about to be executed is self-insert-command, or is a
|
|
|
1542 ;; keyboard macro of a single key sequence which is bound to self-insert-
|
|
|
1543 ;; command, then we add those chars to the search ring instead of inserting
|
|
|
1544 ;; them in the buffer. In this way, the set of self-searching characters
|
|
|
1545 ;; need not be exhaustively enumerated, but is derived from other maps.
|
|
|
1546 ;;
|
|
|
1547 (cond ((not (eq (current-buffer) isearch-buffer))
|
|
|
1548 ;; If the buffer (likely meaning "frame") has changed, bail.
|
|
|
1549 ;; This can happen if the user types something into another
|
|
|
1550 ;; frame. It can also happen if a proc filter has popped up
|
|
|
1551 ;; another buffer, which is arguably a bad thing for it to
|
|
|
1552 ;; have done, but the way in which isearch would have hosed
|
|
|
1553 ;; you in that case is unarguably even worse. -jwz
|
|
|
1554 (isearch-done)
|
|
|
1555
|
|
|
1556 ;; `this-command' is set according to the value of
|
|
|
1557 ;; `overriding-local-map', set by isearch-mode. This is
|
|
|
1558 ;; wrong because that keymap makes sense only in isearch
|
|
|
1559 ;; buffer. To make sure the right command is called, adjust
|
|
|
1560 ;; `this-command' to the appropriate value, now that
|
|
|
1561 ;; `isearch-done' has set `overriding-local-map' to nil.
|
|
|
1562
|
|
|
1563 ;; FSF does similar magic in `isearch-other-meta-char', which
|
|
|
1564 ;; is horribly complex. I *hope* what we do works in all
|
|
|
1565 ;; cases.
|
|
|
1566 (setq this-command (key-binding (this-command-keys))))
|
|
|
1567 (t
|
|
|
1568 (isearch-maybe-frob-keyboard-macros)
|
|
|
1569 (if (and this-command
|
|
|
1570 (symbolp this-command)
|
|
|
1571 (get this-command 'isearch-command))
|
|
|
1572 nil ; then continue.
|
|
|
1573 (isearch-done)))))
|
|
|
1574
|
|
|
1575 (defun isearch-maybe-frob-keyboard-macros ()
|
|
|
1576 ;;
|
|
|
1577 ;; If the command about to be executed is `self-insert-command' then change
|
|
|
1578 ;; the command to `isearch-printing-char' instead, meaning add the last-
|
|
|
1579 ;; typed character to the search string.
|
|
|
1580 ;;
|
|
|
1581 ;; If `this-command' is a string or a vector (that is, a keyboard macro)
|
|
|
1582 ;; and it contains only one command, which is bound to self-insert-command,
|
|
|
1583 ;; then do the same thing as for self-inserting commands: arrange for that
|
|
|
1584 ;; character to be added to the search string. If we didn't do this, then
|
|
|
1585 ;; typing a compose sequence (a la x-compose.el) would terminate the search
|
|
|
1586 ;; and insert the character, instead of searching for that character.
|
|
|
1587 ;;
|
|
|
1588 ;; We should continue doing this, since it's pretty much the behavior one
|
|
|
1589 ;; would expect, but it will stop being so necessary once key-translation-
|
|
|
1590 ;; map exists and is used by x-compose.el and things like it, since the
|
|
|
1591 ;; translation will have been done before we see the keys.
|
|
|
1592 ;;
|
|
|
1593 (cond ((eq this-command 'self-insert-command)
|
|
|
1594 (setq this-command 'isearch-printing-char))
|
|
|
1595 ((and (or (stringp this-command) (vectorp this-command))
|
|
|
1596 (eq (key-binding this-command) 'self-insert-command))
|
|
|
1597 (setq last-command-event (character-to-event (aref this-command 0))
|
|
|
1598 last-command-char (and (stringp this-command)
|
|
|
1599 (aref this-command 0))
|
|
|
1600 this-command 'isearch-printing-char))
|
|
|
1601 ))
|
|
|
1602
|
|
|
1603
|
|
|
1604 ;;;========================================================
|
|
|
1605 ;;; Highlighting
|
|
|
1606
|
|
|
1607 (defvar isearch-extent nil)
|
|
|
1608
|
|
|
1609 ;; this face is initialized by faces.el since isearch is preloaded.
|
|
|
1610 ;(make-face 'isearch)
|
|
|
1611
|
|
|
1612 (defun isearch-make-extent (begin end)
|
|
|
1613 (let ((x (make-extent begin end (current-buffer))))
|
|
440
|
1614 ;; make the isearch extent always take precedence over any mouse-
|
|
428
|
1615 ;; highlighted extents we may be passing through, since isearch, being
|
|
|
1616 ;; modal, is more interesting (there's nothing they could do with a
|
|
|
1617 ;; mouse-highlighted extent while in the midst of a search anyway).
|
|
|
1618 (set-extent-priority x (+ mouse-highlight-priority 2))
|
|
|
1619 (set-extent-face x 'isearch)
|
|
|
1620 (setq isearch-extent x)))
|
|
|
1621
|
|
|
1622 (defun isearch-highlight (begin end)
|
|
|
1623 (if (null search-highlight)
|
|
|
1624 nil
|
|
|
1625 ;; make sure isearch-extent is in the current buffer
|
|
|
1626 (or (and (extentp isearch-extent)
|
|
|
1627 (extent-live-p isearch-extent))
|
|
|
1628 (isearch-make-extent begin end))
|
|
|
1629 (set-extent-endpoints isearch-extent begin end (current-buffer))))
|
|
|
1630
|
|
|
1631 ;; This used to have a TOTALLY flag that also deleted the extent. I
|
|
|
1632 ;; don't think this is necessary any longer, as isearch-highlight can
|
|
|
1633 ;; simply move the extent to another buffer. The IGNORED argument is
|
|
|
1634 ;; for the code that calls this function with an argument. --hniksic
|
|
|
1635 (defun isearch-dehighlight (&optional ignored)
|
|
|
1636 (and search-highlight
|
|
|
1637 (extentp isearch-extent)
|
|
|
1638 (extent-live-p isearch-extent)
|
|
|
1639 (detach-extent isearch-extent)))
|
|
|
1640
|
|
|
1641
|
|
|
1642 ;;;========================================================
|
|
|
1643 ;;; Searching
|
|
|
1644
|
|
|
1645 (defun isearch-search ()
|
|
|
1646 ;; Do the search with the current search string.
|
|
|
1647 (isearch-message nil t)
|
|
|
1648 (isearch-fix-case)
|
|
|
1649 (condition-case lossage
|
|
|
1650 (let ((inhibit-quit nil)
|
|
|
1651 (case-fold-search isearch-case-fold-search)
|
|
|
1652 (retry t))
|
|
|
1653 (if isearch-regexp (setq isearch-invalid-regexp nil))
|
|
|
1654 (setq isearch-within-brackets nil)
|
|
|
1655 (while retry
|
|
|
1656 (setq isearch-success
|
|
|
1657 (funcall
|
|
|
1658 (cond (isearch-word
|
|
|
1659 (if isearch-forward
|
|
|
1660 'word-search-forward 'word-search-backward))
|
|
|
1661 (isearch-regexp
|
|
|
1662 (if isearch-forward
|
|
|
1663 're-search-forward 're-search-backward))
|
|
|
1664 (t
|
|
|
1665 (if isearch-forward 'search-forward 'search-backward)))
|
|
|
1666 isearch-string nil t))
|
|
|
1667 ;; Clear RETRY unless we matched some invisible text
|
|
|
1668 ;; and we aren't supposed to do that.
|
|
|
1669 (if (or (eq search-invisible t)
|
|
|
1670 (not isearch-success)
|
|
|
1671 (bobp) (eobp)
|
|
|
1672 (= (match-beginning 0) (match-end 0))
|
|
|
1673 (not (isearch-range-invisible
|
|
|
1674 (match-beginning 0) (match-end 0))))
|
|
|
1675 (setq retry nil)))
|
|
|
1676 (setq isearch-just-started nil)
|
|
|
1677 (when isearch-success
|
|
|
1678 (setq isearch-other-end
|
|
|
1679 (if isearch-forward (match-beginning 0) (match-end 0)))
|
|
|
1680 (and isearch-hide-immediately
|
|
|
1681 (isearch-restore-invisible-extents (match-beginning 0)
|
|
|
1682 (match-end 0)))))
|
|
|
1683
|
|
|
1684 (quit (setq unread-command-events (nconc unread-command-events
|
|
|
1685 (character-to-event (quit-char))))
|
|
|
1686 (setq isearch-success nil))
|
|
|
1687
|
|
|
1688 (invalid-regexp
|
|
|
1689 (setq isearch-invalid-regexp (car (cdr lossage)))
|
|
|
1690 (setq isearch-within-brackets (string-match "\\`Unmatched \\["
|
|
|
1691 isearch-invalid-regexp))
|
|
|
1692 (if (string-match
|
|
|
1693 "\\`Premature \\|\\`Unmatched \\|\\`Invalid "
|
|
|
1694 isearch-invalid-regexp)
|
|
|
1695 (setq isearch-invalid-regexp (gettext "incomplete input"))))
|
|
|
1696 (error
|
|
|
1697 ;; stack overflow in regexp search.
|
|
|
1698 (setq isearch-invalid-regexp (car (cdr lossage)))))
|
|
|
1699
|
|
|
1700 (if isearch-success
|
|
|
1701 nil
|
|
|
1702
|
|
|
1703 ;; If we're being run inside a keyboard macro, then the call to
|
|
|
1704 ;; ding will signal an error (to terminate the macro). We must
|
|
|
1705 ;; turn off isearch-mode first, so that we aren't still in isearch
|
|
|
1706 ;; mode after the macro exits. Note that isearch-recursive-edit
|
|
|
1707 ;; must not be true if a keyboard macro is executing.
|
|
|
1708 (if (and executing-kbd-macro (not defining-kbd-macro))
|
|
|
1709 (progn
|
|
|
1710 (isearch-done)
|
|
|
1711 (ding nil 'isearch-failed)))
|
|
|
1712
|
|
|
1713 ;; Ding if failed this time after succeeding last time.
|
|
|
1714 (and (nth 3 (car isearch-cmds))
|
|
|
1715 (ding nil 'isearch-failed))
|
|
|
1716 (goto-char (nth 2 (car isearch-cmds)))))
|
|
|
1717
|
|
|
1718 ;; Replaced with isearch-edit-string.
|
|
|
1719 ;(defun nonincremental-search (forward regexp)
|
|
|
1720 ;...
|
|
|
1721
|
|
|
1722 (defun isearch-unhide-extent (extent)
|
|
|
1723 ;; Store the values for the `invisible' and `intangible'
|
|
|
1724 ;; properties, and then set them to nil. This way the text hidden
|
|
|
1725 ;; by this extent becomes visible.
|
|
|
1726 (put extent 'isearch-invisible (get extent 'invisible))
|
|
|
1727 (put extent 'isearch-intangible (get extent 'intangible))
|
|
|
1728 (put extent 'invisible nil)
|
|
|
1729 (put extent 'intangible nil))
|
|
|
1730
|
|
444
|
1731 (defun isearch-range-invisible (start end)
|
|
|
1732 "Return t if all the text from START to END is invisible.
|
|
428
|
1733 Before that, if search-invisible is `open', unhide the extents with an
|
|
|
1734 `isearch-open-invisible' property."
|
|
|
1735 ;; isearch-search uses this to skip the extents that are invisible,
|
|
|
1736 ;; but don't have `isearch-open-invisible' set. It is unclear
|
|
444
|
1737 ;; what's supposed to happen if only a part of [START, END) overlaps
|
|
428
|
1738 ;; the extent.
|
|
|
1739 (let (to-be-unhidden)
|
|
|
1740 (if (map-extents
|
|
|
1741 (lambda (extent ignored)
|
|
444
|
1742 (if (and (<= (extent-start-position extent) start)
|
|
428
|
1743 (>= (extent-end-position extent) end))
|
|
|
1744 ;; All of the region is covered by the extent.
|
|
|
1745 (if (and (eq search-invisible 'open)
|
|
|
1746 (get extent 'isearch-open-invisible))
|
|
|
1747 (progn
|
|
|
1748 (push extent to-be-unhidden)
|
|
|
1749 nil) ; keep mapping
|
|
|
1750 ;; We can't or won't unhide this extent, so we must
|
|
|
1751 ;; skip the whole match. We return from map-extents
|
|
|
1752 ;; immediately.
|
|
|
1753 t)
|
|
|
1754 ;; Else, keep looking.
|
|
|
1755 nil))
|
|
444
|
1756 nil start end nil 'all-extents-closed 'invisible)
|
|
428
|
1757 ;; The whole match must be skipped. Signal it by returning t
|
|
|
1758 ;; to the caller.
|
|
|
1759 t
|
|
|
1760 ;; If any extents need to be unhidden, unhide them.
|
|
|
1761 (mapc #'isearch-unhide-extent to-be-unhidden)
|
|
|
1762 ;; Will leave this assert for some time, to catch bugs.
|
|
|
1763 (assert (null (intersection to-be-unhidden isearch-unhidden-extents)))
|
|
|
1764 (setq isearch-unhidden-extents (nconc to-be-unhidden
|
|
|
1765 isearch-unhidden-extents))
|
|
|
1766 nil)))
|
|
|
1767
|
|
|
1768 (defun isearch-restore-extent (extent)
|
|
|
1769 (put extent 'invisible (get extent 'isearch-invisible))
|
|
|
1770 (put extent 'intangible (get extent 'isearch-intangible))
|
|
|
1771 (remprop extent 'isearch-invisible)
|
|
|
1772 (remprop extent 'isearch-intangible))
|
|
|
1773
|
|
|
1774 ;; FSF calls this function `isearch-clean-overlays'.
|
|
444
|
1775 (defun isearch-restore-invisible-extents (start end)
|
|
428
|
1776 (cond
|
|
444
|
1777 ((null start)
|
|
428
|
1778 ;; Delete all -- this is called at the end of isearch.
|
|
|
1779 (mapc #'isearch-restore-extent isearch-unhidden-extents)
|
|
|
1780 (setq isearch-unhidden-extents nil))
|
|
|
1781 (t
|
|
|
1782 ;; Extents that do not overlap the match area can be safely
|
|
|
1783 ;; restored to their hidden state.
|
|
|
1784 (setq isearch-unhidden-extents
|
|
|
1785 (delete-if (lambda (extent)
|
|
444
|
1786 (unless (extent-in-region-p extent start end
|
|
428
|
1787 'all-extents-closed)
|
|
|
1788 (isearch-restore-extent extent)
|
|
|
1789 t))
|
|
|
1790 isearch-unhidden-extents)))))
|
|
|
1791
|
|
|
1792 (defun isearch-no-upper-case-p (string)
|
|
|
1793 "Return t if there are no upper case chars in string.
|
|
|
1794 But upper case chars preceded by \\ do not count since they
|
|
|
1795 have special meaning in a regexp."
|
|
|
1796 ;; this incorrectly returns t for "\\\\A"
|
|
|
1797 (let ((case-fold-search nil))
|
|
|
1798 (not (string-match "\\(^\\|[^\\]\\)[A-Z]" string))))
|
|
|
1799 (make-obsolete 'isearch-no-upper-case-p 'no-upper-case-p)
|
|
|
1800
|
|
|
1801 ;; Portability functions to support various Emacs versions.
|
|
|
1802
|
|
|
1803 (defun isearch-char-to-string (c)
|
|
|
1804 (if (eventp c)
|
|
|
1805 (make-string 1 (event-to-character c nil nil t))
|
|
|
1806 (make-string 1 c)))
|
|
|
1807
|
|
|
1808 ;(defun isearch-text-char-description (c)
|
|
|
1809 ; (isearch-char-to-string c))
|
|
|
1810
|
|
|
1811 (define-function 'isearch-text-char-description 'text-char-description)
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1812
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1813 ;; Used by etags.el and info.el
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1814 (defmacro with-caps-disable-folding (string &rest body) "\
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1815 Eval BODY with `case-fold-search' let to nil if STRING contains
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1816 uppercase letters and `search-caps-disable-folding' is t."
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1817 `(let ((case-fold-search
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1818 (if (and case-fold-search search-caps-disable-folding)
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1819 (isearch-no-upper-case-p ,string)
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1820 case-fold-search)))
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1821 ,@body))
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1822 (make-obsolete 'with-caps-disable-folding 'with-search-caps-disable-folding)
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1823 (put 'with-caps-disable-folding 'lisp-indent-function 1)
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1824 (put 'with-caps-disable-folding 'edebug-form-spec '(form body))
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1825
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1826
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1827 ;;;========================================================
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1828 ;;; Advanced highlighting
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1829
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1830 ;; When active, *every* visible match for the current search string is
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1831 ;; highlighted: the current one using the normal isearch match color
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1832 ;; and all the others using the `isearch-secondary' face. The extra
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1833 ;; highlighting makes it easier to anticipate where the cursor will
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1834 ;; land each time you press C-s or C-r to repeat a pending search.
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1835 ;; Only the matches visible at any point are highlighted -- when you
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1836 ;; move through the buffer, the highlighting is readjusted.
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1837
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1838 ;; This is based on ideas from Bob Glickstein's `ishl' package. It
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1839 ;; has been merged with XEmacs by Darryl Okahata, and then completely
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1840 ;; rewritten by Hrvoje Niksic.
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1841
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1842 ;; The code makes the following assumptions about the rest of this
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1843 ;; file, so be careful when modifying it.
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1844
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1845 ;; * `isearch-highlight-all-update' should get called when the search
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1846 ;; string changes, or when the search advances. This is done from
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1847 ;; `isearch-update'.
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1848 ;; * `isearch-highlight-all-cleanup' should get called when the search
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1849 ;; is done. This is performed in `isearch-done'.
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1850 ;; * `isearch-string' is expected to contain the current search string
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1851 ;; as entered by the user.
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1852 ;; * `isearch-opoint' is expected to contain the location where the
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1853 ;; current search began.
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1854 ;; * the type of the current search is expected to be given by
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1855 ;; `isearch-word' and `isearch-regexp'.
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1856 ;; * the variable `isearch-invalid-regexp' is expected to be true iff
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1857 ;; `isearch-string' is an invalid regexp.
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1858
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1859 (defcustom isearch-highlight-all-matches search-highlight
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1860 "*Non-nil means highlight all visible matches."
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1861 :type 'boolean
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1862 :group 'isearch)
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1863
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1864 ;; We can't create this face here, as isearch.el is preloaded.
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1865 ;; #### Think up a better name for this!
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1866 ;(defface isearch-secondary '((t (:foreground "red3")))
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1867 ; "Face to use for highlighting all matches."
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1868 ; :group 'isearch)
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1869
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1870 (defvar isearch-highlight-extents nil)
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1871 (defvar isearch-window-start nil)
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1872 (defvar isearch-window-end nil)
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1873 ;; We compare isearch-string and isearch-case-fold-search to saved
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1874 ;; values for better efficiency.
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1875 (defvar isearch-highlight-last-string nil)
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1876 (defvar isearch-highlight-last-case-fold-search nil)
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1877 (defvar isearch-highlight-last-regexp nil)
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1878
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1879 (defun isearch-delete-extents-in-range (start end)
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1880 ;; Delete all highlighting extents that overlap [START, END).
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1881 (setq isearch-highlight-extents
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1882 (delete-if (lambda (extent)
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1883 (when (extent-in-region-p extent start end)
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1884 (delete-extent extent)
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1885 t))
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1886 isearch-highlight-extents)))
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1887
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1888 (defun isearch-highlight-all-cleanup ()
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1889 ;; Stop lazily highlighting and remove extra highlighting from
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1890 ;; buffer.
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1891 (mapc #'delete-extent isearch-highlight-extents)
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1892 (setq isearch-highlight-extents nil)
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442
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1893 (setq isearch-window-end nil
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428
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1894 isearch-highlight-last-string nil))
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1895
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1896 (defun isearch-highlight-all-update ()
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1897 ;; Update the highlighting if necessary. This needs to check if the
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1898 ;; search string has changed, or if the window has changed position
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1899 ;; in the buffer.
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1900 (let ((need-start-over nil))
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1901 ;; NB: we don't check for isearch-success because if the point is
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1902 ;; after the last match, the search can be unsuccessful, and yet
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1903 ;; there are things to highlight.
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1904 (cond ((not isearch-highlight-all-matches))
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1905 ((or (equal isearch-string "")
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1906 isearch-invalid-regexp)
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1907 (isearch-highlight-all-cleanup))
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1908 ((not (eq isearch-case-fold-search
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1909 isearch-highlight-last-case-fold-search))
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1910 ;; This case is usually caused by search string being
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1911 ;; changed, which would be caught below, but it can also be
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1912 ;; tripped using isearch-toggle-case-fold.
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1913 (setq need-start-over t))
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1914 ((not (eq isearch-regexp isearch-highlight-last-regexp))
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1915 ;; Ditto for isearch-toggle-regexp.
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1916 (setq need-start-over t))
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1917 ((equal isearch-string isearch-highlight-last-string)
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1918 ;; The search string is the same. We need to do something
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1919 ;; if our position has changed.
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1920
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1921 ;; It would be nice if we didn't have to do this; however,
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1922 ;; window-start doesn't support a GUARANTEE flag, so we must
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440
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1923 ;; force redisplay to get the correct value for start and end
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428
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1924 ;; of window.
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1925 (sit-for 0)
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1926
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1927 ;; Check whether our location has changed.
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1928 (let ((start (window-start))
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1929 (end (min (window-end) (point-max))))
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1930 (cond ((and (= start isearch-window-start)
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1931 (= end isearch-window-end))
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1932 ;; Our position is unchanged -- do nothing.
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1933 )
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1934 ((and (> start isearch-window-start)
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1935 (> end isearch-window-end)
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1936 (<= start isearch-window-end))
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1937 ;; We've migrated downward, but we overlap the old
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1938 ;; region. Delete the old non-overlapping extents
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1939 ;; and fill in the rest.
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1940 (isearch-delete-extents-in-range isearch-window-start start)
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1941 (isearch-highlightify-region isearch-window-end end)
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1942 (setq isearch-window-start start
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1943 isearch-window-end end))
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1944 ((and (<= start isearch-window-start)
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1945 (<= end isearch-window-end)
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1946 (> end isearch-window-start))
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1947 ;; We've migrated upward, but we overlap the old
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1948 ;; region. Delete the old non-overlapping extents
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1949 ;; and fill in the rest.
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1950 (isearch-delete-extents-in-range
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1951 end isearch-window-end)
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1952 (isearch-highlightify-region start isearch-window-start)
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1953 (setq isearch-window-start start
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1954 isearch-window-end end))
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1955 (t
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1956 ;; The regions don't overlap, or they overlap in a
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1957 ;; weird way.
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1958 (setq need-start-over t)))))
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1959 (t
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1960 ;; The search string has changed.
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1961
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1962 ;; If more input is pending, don't start over because
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1963 ;; starting over forces redisplay, and that slows down
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1964 ;; typing.
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1965 (unless (input-pending-p)
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1966 (setq need-start-over t))))
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1967 (when need-start-over
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1968 ;; Force redisplay before removing the old extents, in order to
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1969 ;; avoid flicker.
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1970 (sit-for 0)
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1971 (isearch-highlight-all-cleanup)
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1972 (setq isearch-window-start (window-start)
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1973 isearch-window-end (min (window-end) (point-max)))
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1974 (isearch-highlightify-region isearch-window-start isearch-window-end))
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1975
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1976 (setq isearch-highlight-last-string isearch-string
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1977 isearch-highlight-last-case-fold-search isearch-case-fold-search
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1978 isearch-highlight-last-regexp isearch-regexp)))
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1979
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1980 (defun isearch-highlight-advance (string forwardp)
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1981 ;; Search ahead for the next or previous match. This is the same as
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1982 ;; isearch-search, but without the extra baggage. Maybe it should
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1983 ;; be in a separate function.
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1984 (let ((case-fold-search isearch-case-fold-search))
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1985 (funcall (cond (isearch-word (if forwardp
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1986 'word-search-forward
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1987 'word-search-backward))
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1988 (isearch-regexp (if forwardp
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1989 're-search-forward
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1990 're-search-backward))
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1991 (t (if forwardp
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1992 'search-forward
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1993 'search-backward)))
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1994 string nil t)))
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1995
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1996 (defun isearch-highlightify-region (start end)
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1997 ;; Highlight all occurrences of isearch-string between START and
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1998 ;; END. To do this right, we have to search forward as long as
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1999 ;; there are matches that overlap [START, END), and then search
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2000 ;; backward the same way.
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2001 (save-excursion
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2002 (goto-char isearch-opoint)
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2003 (let ((lastpoint (point)))
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2004 (while (and (isearch-highlight-advance isearch-string t)
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2005 (/= lastpoint (point))
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2006 (< (match-beginning 0) end))
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2007 (let ((extent (make-extent (match-beginning 0)
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2008 (match-end 0))))
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2009 (set-extent-priority extent (1+ mouse-highlight-priority))
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2010 (put extent 'face 'isearch-secondary)
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2011 (push extent isearch-highlight-extents))
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2012 (setq lastpoint (point))))
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2013 (goto-char isearch-opoint)
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2014 (let ((lastpoint (point)))
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2015 (while (and (isearch-highlight-advance isearch-string nil)
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2016 (/= lastpoint (point))
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2017 (>= (match-end 0) start))
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2018 (let ((extent (make-extent (match-beginning 0)
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2019 (match-end 0))))
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2020 (set-extent-priority extent (1+ mouse-highlight-priority))
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2021 (put extent 'face 'isearch-secondary)
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2022 (push extent isearch-highlight-extents))
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2023 (setq lastpoint (point))))))
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2024
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2025 ;;; isearch-mode.el ends here
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