annotate .elisp/show-wspace.el @ 55:846d556d9619

Add a custom _hg (modified off of recent crew) and fix up function path stuff in hg to improve my hg tab completions.
author Augie Fackler <durin42@gmail.com>
date Fri, 20 Feb 2009 11:47:12 -0600
parents c30d68fbd368
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ;;; show-wspace.el --- Highlight whitespace of various kinds.
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2 ;;
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3 ;; Filename: show-wspace.el
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4 ;; Description: Highlight whitespace of various kinds.
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5 ;; Author: Peter Steiner <unistein@isbe.ch>, Drew Adams
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6 ;; Maintainer: Drew Adams
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7 ;; Copyright (C) 2000-2008, Drew Adams, all rights reserved.
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8 ;; Created: Wed Jun 21 08:54:53 2000
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9 ;; Version: 21.0
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10 ;; Last-Updated: Tue Jan 01 13:59:36 2008 (-28800 Pacific Standard Time)
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11 ;; By: dradams
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12 ;; Update #: 264
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13 ;; URL: http://www.emacswiki.org/cgi-bin/wiki/show-wspace.el
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14 ;; Keywords: highlight, whitespace
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15 ;; Compatibility: GNU Emacs 20.x, GNU Emacs 21.x, GNU Emacs 22.x
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16 ;;
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17 ;; Features that might be required by this library:
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18 ;;
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19 ;; None
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20 ;;
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21 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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22 ;;
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23 ;;; Commentary:
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24 ;;
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25 ;; Highlight whitespace of various kinds.
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26 ;;
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27 ;; To use this library:
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28 ;;
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29 ;; Add this to your initialization file (~/.emacs or ~/_emacs):
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30 ;;
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31 ;; (require 'show-wspace) ; Load this library.
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32 ;;
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33 ;; Then you can use commands `toggle-*' (see below) to turn the
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34 ;; various kinds of whitespace highlighting on and off in Font-Lock
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35 ;; mode.
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36 ;;
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37 ;; If you want to always use a particular kind of whitespace
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38 ;; highlighting, by default, then add the corresponding
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39 ;; `show-ws-highlight-*' function (see below) to the hook
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40 ;; `font-lock-mode-hook'. Then, whenever Font-Lock mode is turned on,
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41 ;; whitespace highlighting will also be turned on.
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42 ;;
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43 ;; For example, you can turn on tab highlighting by default by adding
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44 ;; function `show-ws-highlight-tabs' to `font-lock-mode-hook' in your
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45 ;; .emacs file, as follows:
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46 ;;
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47 ;; (add-hook 'font-lock-mode-hook 'show-ws-highlight-tabs)
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48 ;;
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49 ;;
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50 ;; Faces defined here:
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51 ;;
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52 ;; `show-ws-hard-space', `show-ws-tab', `show-ws-trailing-whitespace'.
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53 ;;
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54 ;; Commands defined here:
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55 ;;
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56 ;; `show-ws-toggle-show-hard-spaces', `show-ws-toggle-show-tabs',
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57 ;; `show-ws-toggle-show-trailing-whitespace',
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58 ;; `toggle-show-hard-spaces-show-ws' (alias),
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59 ;; `toggle-show-tabs-show-ws' (alias),
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60 ;; `toggle-show-trailing-whitespace-show-ws' (alias).
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61 ;;
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62 ;; Non-interactive functions defined here:
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63 ;;
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64 ;; `show-ws-highlight-hard-spaces', `show-ws-highlight-tabs',
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65 ;; `show-ws-highlight-trailing-whitespace'.
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66 ;;
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67 ;; Internal variables defined here:
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68 ;;
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69 ;; `show-ws-highlight-hard-spaces-p', `show-ws-highlight-tabs-p',
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70 ;; `show-ws-highlight-trailing-whitespace-p'.
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71 ;;
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72 ;; Drew Adams wrote the `toggle-*' commands and `*-p' variables.
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73 ;;
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74 ;; Peter Steiner wrote the original code that did the equivalent of
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75 ;; the `show-ws-highlight-*' commands here in his `hilite-trail.el'.
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76 ;;
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77 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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78 ;;
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79 ;;; Change log:
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80 ;;
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81 ;; 2007/09/25 dadams
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82 ;; Renamed to use prefix show-ws-. Thx to Cyril Brulebois.
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83 ;; 2006/11/11 dadams
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84 ;; Corrected doc strings. Clarified: hard space is non-breaking space, \240.
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85 ;; Included hard space in highlight-trailing-whitespace.
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86 ;; 2006/04/06 dadams
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87 ;; highlight-*: Use font-lock-add-keywords. Thanks to Karl Chen.
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88 ;; 2006/02/20 dadams
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89 ;; Mentioned in Commentary how to use non-interactively.
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90 ;; 2006/01/07 dadams
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91 ;; Added :link for sending bug report.
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92 ;; 2006/01/06 dadams
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93 ;; Added defgroup and use it.
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94 ;; 2005/12/30 dadams
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95 ;; Removed require of def-face-const.el.
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96 ;; Renamed faces, without "-face".
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97 ;; 2005/01/25 dadams
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98 ;; Removed ###autoload for defvars.
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99 ;; 2004/06/10 dadams
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100 ;; Fixed minor bug in highlight-* functions.
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101 ;;
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102 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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103 ;;
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104 ;; This program is free software; you can redistribute it and/or modify
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105 ;; it under the terms of the GNU General Public License as published by
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106 ;; the Free Software Foundation; either version 2, or (at your option)
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107 ;; any later version.
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108
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109 ;; This program is distributed in the hope that it will be useful,
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110 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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111 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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112 ;; GNU General Public License for more details.
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113
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114 ;; You should have received a copy of the GNU General Public License
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115 ;; along with this program; see the file COPYING. If not, write to
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116 ;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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117 ;; Floor, Boston, MA 02110-1301, USA.
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118 ;;
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119 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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120 ;;
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121 ;;; Code:
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122
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123 (and (< emacs-major-version 20) (eval-when-compile (require 'cl))) ;; when, push
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124
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125 ;;;;;;;;;;;;;;;;;;;;;;;;;
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126
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127 (defgroup Show-Whitespace nil
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128 "Highlight whitespace of various kinds."
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129 :prefix "show-ws-"
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130 :group 'convenience :group 'matching
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131 :link `(url-link :tag "Send Bug Report"
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132 ,(concat "mailto:" "drew.adams" "@" "oracle" ".com?subject=\
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133 show-wspace.el bug: \
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134 &body=Describe bug here, starting with `emacs -q'. \
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135 Don't forget to mention your Emacs and library versions."))
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136 :link '(url-link :tag "Other Libraries by Drew"
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137 "http://www.emacswiki.org/cgi-bin/wiki/DrewsElispLibraries")
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138 :link '(url-link :tag "Download"
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139 "http://www.emacswiki.org/cgi-bin/wiki/show-wspace.el")
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140 :link '(url-link :tag "Description"
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141 "http://www.emacswiki.org/cgi-bin/wiki/ShowWhiteSpace#ShowWspace")
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142 :link '(emacs-commentary-link :tag "Commentary" "show-wspace")
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143 )
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144
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145 (defface show-ws-tab '((t (:background "LemonChiffon")))
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146 "*Face for highlighting tab characters (`C-i') in Font-Lock mode."
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147 :group 'Show-Whitespace :group 'font-lock :group 'faces)
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148
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149 (defface show-ws-trailing-whitespace '((t (:background "Gold")))
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150 "*Face for highlighting whitespace at line ends in Font-Lock mode."
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151 :group 'Show-Whitespace :group 'font-lock :group 'faces)
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152
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153 (defface show-ws-hard-space '((t (:background "PaleGreen")))
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154 "*Face for highlighting non-breaking spaces (`\240')in Font-Lock mode."
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155 :group 'Show-Whitespace :group 'font-lock :group 'faces)
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156
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157
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158 (defvar show-ws-highlight-tabs-p nil
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159 "Non-nil means font-lock mode highlights TAB characters (`C-i').")
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160
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161 (defvar show-ws-highlight-trailing-whitespace-p nil
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162 "Non-nil means font-lock mode highlights whitespace at line ends.")
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163
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164 (defvar show-ws-highlight-hard-spaces-p nil
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165 "Non-nil means font-lock mode highlights non-breaking spaces (`\240').")
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166
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167 ;;;###autoload
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168 (defalias 'toggle-show-tabs-show-ws 'show-ws-toggle-show-tabs)
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169 ;;;###autoload
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170 (defun show-ws-toggle-show-tabs ()
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171 "Toggle highlighting of TABs, using face `show-ws-tab'."
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172 (interactive)
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173 (if show-ws-highlight-tabs-p
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174 (remove-hook 'font-lock-mode-hook 'show-ws-highlight-tabs)
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175 (add-hook 'font-lock-mode-hook 'show-ws-highlight-tabs))
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176 (setq show-ws-highlight-tabs-p (not show-ws-highlight-tabs-p))
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177 (font-lock-mode) (font-lock-mode)
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178 (message "TAB highlighting is now %s." (if show-ws-highlight-tabs-p "ON" "OFF")))
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179
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180 ;;;###autoload
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181 (defalias 'toggle-show-hard-spaces-show-ws 'show-ws-toggle-show-hard-spaces)
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182 ;;;###autoload
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183 (defun show-ws-toggle-show-hard-spaces ()
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184 "Toggle highlighting of non-breaking space characters (`\240').
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185 Uses face `show-ws-hard-space'."
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186 (interactive)
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187 (if show-ws-highlight-hard-spaces-p
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188 (remove-hook 'font-lock-mode-hook 'show-ws-highlight-hard-spaces)
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189 (add-hook 'font-lock-mode-hook 'show-ws-highlight-hard-spaces))
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190 (setq show-ws-highlight-hard-spaces-p (not show-ws-highlight-hard-spaces-p))
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191 (font-lock-mode) (font-lock-mode)
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192 (message "Hard (non-breaking) space highlighting is now %s."
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193 (if show-ws-highlight-hard-spaces-p "ON" "OFF")))
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194
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195 ;;;###autoload
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196 (defalias 'toggle-show-trailing-whitespace-show-ws
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197 'show-ws-toggle-show-trailing-whitespace)
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198 ;;;###autoload
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199 (defun show-ws-toggle-show-trailing-whitespace ()
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200 "Toggle highlighting of trailing whitespace.
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201 Uses face `show-ws-trailing-whitespace'."
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202 (interactive)
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203 (if show-ws-highlight-trailing-whitespace-p
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204 (remove-hook 'font-lock-mode-hook 'show-ws-highlight-trailing-whitespace)
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205 (add-hook 'font-lock-mode-hook 'show-ws-highlight-trailing-whitespace))
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206 (setq show-ws-highlight-trailing-whitespace-p
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207 (not show-ws-highlight-trailing-whitespace-p))
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208 (font-lock-mode) (font-lock-mode)
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209 (message "Trailing whitespace highlighting is now %s."
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210 (if show-ws-highlight-trailing-whitespace-p "ON" "OFF")))
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211
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212 (defun show-ws-highlight-tabs ()
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213 "Highlight tab characters (`C-i')."
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214 (font-lock-add-keywords nil '(("[\t]+" (0 'show-ws-tab t)))))
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215 (defun show-ws-highlight-hard-spaces ()
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216 "Highlight hard (non-breaking) space characters (`\240')."
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217 (font-lock-add-keywords nil '(("[\240]+" (0 'show-ws-hard-space t)))))
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218 (defun show-ws-highlight-trailing-whitespace ()
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219 "Highlight whitespace characters at line ends."
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220 (font-lock-add-keywords
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221 nil '(("[\240\040\t]+$" (0 'show-ws-trailing-whitespace t)))))
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222
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223 ;;;;;;;;;;;;;;;;;;;;;;;
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224
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225 (provide 'show-wspace)
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226
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227 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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228 ;;; show-wspace.el ends here