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428
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1 ;;; mule-cmds.el --- Commands for multilingual environment
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2
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3 ;; Copyright (C) 1995,1999 Electrotechnical Laboratory, JAPAN.
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4 ;; Licensed to the Free Software Foundation.
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5 ;; Copyright (C) 1997 MORIOKA Tomohiko
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6
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7 ;; Keywords: mule, multilingual
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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 Free
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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25
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444
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26 ;; Note: Some of the code here is now in code-cmds.el
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27
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428
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28 ;;; Code:
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29
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30 ;;; MULE related key bindings and menus.
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31
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444
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32 (require 'code-cmds)
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428
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33
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444
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34 ;; Preserve the old name
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35 (defvaralias 'mule-keymap 'coding-keymap)
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36
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428
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37 (define-key mule-keymap "x" 'set-selection-coding-system)
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38 (define-key mule-keymap "X" 'set-next-selection-coding-system)
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39 (define-key mule-keymap "\C-\\" 'set-input-method)
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40 ;;(define-key mule-keymap "c" 'list-coding-system-briefly) ; XEmacs
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41 (define-key mule-keymap "C" 'describe-coding-system) ; XEmacs
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42 (define-key mule-keymap "r" 'toggle-display-direction) ; XEmacs
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43 (define-key mule-keymap "l" 'set-language-environment)
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44
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45 (define-key help-map "L" 'describe-language-environment)
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46 (define-key help-map "\C-\\" 'describe-input-method)
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47 (define-key help-map "I" 'describe-input-method)
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48 (define-key help-map "h" 'view-hello-file)
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49
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50 ;; Menu for XEmacs were moved to menubar-items.el.
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51
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52
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53 ;; This should be a single character key binding because users use it
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54 ;; very frequently while editing multilingual text. Now we can use
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55 ;; only two such keys: "\C-\\" and "\C-^", but the latter is not
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56 ;; convenient because it requires shifting on most keyboards. An
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57 ;; alternative is "\C-\]" which is now bound to `abort-recursive-edit'
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58 ;; but it won't be used that frequently.
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59 (define-key global-map "\C-\\" 'toggle-input-method)
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60
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61 ;;; This is no good because people often type Shift-SPC
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62 ;;; meaning to type SPC. -- rms.
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63 ;;; ;; Here's an alternative key binding for X users (Shift-SPACE).
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64 ;;; (define-key global-map [?\S- ] 'toggle-input-method)
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65
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66 (defun coding-system-change-eol-conversion (coding-system eol-type)
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67 "Return a coding system which differs from CODING-SYSTEM in eol conversion.
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68 The returned coding system converts end-of-line by EOL-TYPE
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69 but text as the same way as CODING-SYSTEM.
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70 EOL-TYPE should be `lf', `crlf', `cr' or nil.
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71 If EOL-TYPE is nil, the returned coding system detects
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72 how end-of-line is formatted automatically while decoding.
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73
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74 EOL-TYPE can be specified by an symbol `unix', `dos' or `mac'.
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75 They means `lf', `crlf', and `cr' respectively."
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76 (if (symbolp eol-type)
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77 (setq eol-type (cond ((or (eq eol-type 'unix)
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78 (eq eol-type 'lf))
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79 'eol-lf)
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80 ((or (eq eol-type 'dos)
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81 (eq eol-type 'crlf))
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82 'eol-crlf)
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83 ((or (eq eol-type 'mac)
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84 (eq eol-type 'cr))
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85 'eol-cr)
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86 (t eol-type))))
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87 (let ((orig-eol-type (coding-system-eol-type coding-system)))
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88 (if (null orig-eol-type)
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89 (if (not eol-type)
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90 coding-system
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91 (coding-system-property coding-system eol-type))
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92 (let ((base (coding-system-base coding-system)))
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93 (if (not eol-type)
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94 base
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442
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95 (if (eq eol-type orig-eol-type)
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428
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96 coding-system
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97 (setq orig-eol-type (coding-system-eol-type base))
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98 (if (null orig-eol-type)
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99 (coding-system-property base eol-type))))))))
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100
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101 ;; (defun coding-system-change-text-conversion (coding-system coding)
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102 ;; "Return a coding system which differs from CODING-SYSTEM in text conversion.
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103 ;; The returned coding system converts text by CODING
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104 ;; but end-of-line as the same way as CODING-SYSTEM.
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105 ;; If CODING is nil, the returned coding system detects
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106 ;; how text is formatted automatically while decoding."
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107 ;; (if (not coding)
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108 ;; (coding-system-base coding-system)
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109 ;; (let ((eol-type (coding-system-eol-type coding-system)))
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110 ;; (coding-system-change-eol-conversion
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111 ;; coding
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112 ;; (if (numberp eol-type) (aref [unix dos mac] eol-type))))))
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113
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114 (defun view-hello-file ()
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115 "Display the HELLO file which list up many languages and characters."
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116 (interactive)
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117 ;; We have to decode the file in any environment.
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118 (let ((coding-system-for-read 'iso-2022-7bit))
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119 (find-file-read-only (expand-file-name "HELLO" data-directory))))
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120
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121
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122 ;;; Language support stuff.
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123
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124 (defvar language-info-alist nil
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125 "Alist of language environment definitions.
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126 Each element looks like:
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127 (LANGUAGE-NAME . ((KEY . INFO) ...))
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128 where LANGUAGE-NAME is a string, the name of the language environment,
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129 KEY is a symbol denoting the kind of information, and
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130 INFO is the data associated with KEY.
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131 Meaningful values for KEY include
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132
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133 documentation value is documentation of what this language environment
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134 is meant for, and how to use it.
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135 charset value is a list of the character sets used by this
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136 language environment.
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137 sample-text value is one line of text,
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138 written using those character sets,
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139 appropriate for this language environment.
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140 setup-function value is a function to call to switch to this
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141 language environment.
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142 exit-function value is a function to call to leave this
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143 language environment.
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144 coding-system value is a list of coding systems that are good
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145 for saving text written in this language environment.
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146 This list serves as suggestions to the user;
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147 in effect, as a kind of documentation.
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148 coding-priority value is a list of coding systems for this language
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149 environment, in order of decreasing priority.
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150 This is used to set up the coding system priority
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151 list when you switch to this language environment.
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152 input-method value is a default input method for this language
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153 environment.
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154 features value is a list of features requested in this
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155 language environment.
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156 tutorial value is a tutorial file name written in the language.")
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157
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158 (defun get-language-info (lang-env key)
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159 "Return information listed under KEY for language environment LANG-ENV.
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160 KEY is a symbol denoting the kind of information.
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161 For a list of useful values for KEY and their meanings,
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162 see `language-info-alist'."
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163 (if (symbolp lang-env)
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164 (setq lang-env (symbol-name lang-env)))
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165 (let ((lang-slot (assoc-ignore-case lang-env language-info-alist)))
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166 (if lang-slot
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167 (cdr (assq key (cdr lang-slot))))))
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168
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169 (defun set-language-info (lang-env key info)
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170 "Modify part of the definition of language environment LANG-ENV.
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171 Specifically, this stores the information INFO under KEY
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172 in the definition of this language environment.
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173 KEY is a symbol denoting the kind of information.
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174 INFO is the value for that information.
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175
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176 For a list of useful values for KEY and their meanings,
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177 see `language-info-alist'."
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178 (if (symbolp lang-env)
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179 (setq lang-env (symbol-name lang-env)))
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180 (let (lang-slot key-slot)
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181 (setq lang-slot (assoc lang-env language-info-alist))
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182 (if (null lang-slot) ; If no slot for the language, add it.
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183 (setq lang-slot (list lang-env)
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184 language-info-alist (cons lang-slot language-info-alist)))
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185 (setq key-slot (assq key lang-slot))
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186 (if (null key-slot) ; If no slot for the key, add it.
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187 (progn
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188 (setq key-slot (list key))
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189 (setcdr lang-slot (cons key-slot (cdr lang-slot)))))
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190 (setcdr key-slot info)))
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191
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192 (defun set-language-info-alist (lang-env alist &optional parents)
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193 "Store ALIST as the definition of language environment LANG-ENV.
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194 ALIST is an alist of KEY and INFO values. See the documentation of
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195 `set-language-info' for the meanings of KEY and INFO."
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196 (if (symbolp lang-env)
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197 (setq lang-env (symbol-name lang-env)))
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198 (let (; (describe-map describe-language-environment-map)
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199 ; (setup-map setup-language-environment-map)
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200 )
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201 ;; (if parents
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202 ;; (let ((l parents)
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203 ;; map parent-symbol parent)
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204 ;; (while l
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205 ;; (if (symbolp (setq parent-symbol (car l)))
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206 ;; (setq parent (symbol-name parent))
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207 ;; (setq parent parent-symbol parent-symbol (intern parent)))
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208 ;; (setq map (lookup-key describe-map (vector parent-symbol)))
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209 ;; (if (not map)
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210 ;; (progn
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211 ;; (setq map (intern (format "describe-%s-environment-map"
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212 ;; (downcase parent))))
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213 ;; (define-prefix-command map)
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214 ;; (define-key-after describe-map (vector parent-symbol)
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215 ;; (cons parent map) t)))
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216 ;; (setq describe-map (symbol-value map))
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217 ;; (setq map (lookup-key setup-map (vector parent-symbol)))
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218 ;; (if (not map)
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219 ;; (progn
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220 ;; (setq map (intern (format "setup-%s-environment-map"
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221 ;; (downcase parent))))
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222 ;; (define-prefix-command map)
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223 ;; (define-key-after setup-map (vector parent-symbol)
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224 ;; (cons parent map) t)))
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225 ;; (setq setup-map (symbol-value map))
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226 ;; (setq l (cdr l)))))
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227
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228 ;; Set up menu items for this language env.
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229 (let ((doc (assq 'documentation alist)))
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230 (when doc
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231 ;; (define-key-after describe-map (vector (intern lang-env))
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232 ;; (cons lang-env 'describe-specified-language-support) t)
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233 (when (featurep 'menubar)
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234 (eval-after-load
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235 "menubar-items.elc"
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236 `(add-menu-button
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442
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237 '("%_Edit" "%_Multilingual (\"Mule\")"
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238 "%_Describe Language Support")
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428
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239 (vector ,lang-env
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240 '(describe-language-environment ,lang-env)
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241 t))))
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242 ))
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243 ;; (define-key-after setup-map (vector (intern lang-env))
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244 ;; (cons lang-env 'setup-specified-language-environment) t)
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245 (when (featurep 'menubar)
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246 (eval-after-load
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247 "menubar-items.elc"
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248 `(add-menu-button
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442
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249 '("%_Edit" "%_Multilingual (\"Mule\")"
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250 "%_Set Language Environment")
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428
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251 (vector ,lang-env
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252 '(set-language-environment ,lang-env)
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253 t))))
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442
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254
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428
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255 (while alist
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256 (set-language-info lang-env (car (car alist)) (cdr (car alist)))
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257 (setq alist (cdr alist)))))
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258
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259 (defun read-language-name (key prompt &optional default)
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260 "Read a language environment name which has information for KEY.
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261 If KEY is nil, read any language environment.
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262 Prompt with PROMPT. DEFAULT is the default choice of language environment.
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263 This returns a language environment name as a string."
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264 (let* ((completion-ignore-case t)
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265 (name (completing-read prompt
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266 language-info-alist
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267 (and key
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268 (function (lambda (elm) (assq key elm))))
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269 t nil nil default)))
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270 (if (and (> (length name) 0)
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271 (or (not key)
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272 (get-language-info name key)))
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273 name)))
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274
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275 ;;; Multilingual input methods.
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276
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277 (defconst leim-list-file-name "leim-list.el"
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278 "Name of LEIM list file.
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279 This file contains a list of libraries of Emacs input methods (LEIM)
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280 in the format of Lisp expression for registering each input method.
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281 Emacs loads this file at startup time.")
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282
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283 (defvar leim-list-header (format
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284 ";;; %s -- list of LEIM (Library of Emacs Input Method)
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285 ;;
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286 ;; This file contains a list of LEIM (Library of Emacs Input Method)
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287 ;; in the same directory as this file. Loading this file registers
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288 ;; the whole input methods in Emacs.
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289 ;;
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290 ;; Each entry has the form:
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291 ;; (register-input-method
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292 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC
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293 ;; TITLE DESCRIPTION
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294 ;; ARG ...)
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295 ;; See the function `register-input-method' for the meanings of arguments.
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296 ;;
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297 ;; If this directory is included in load-path, Emacs automatically
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298 ;; loads this file at startup time.
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299
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300 "
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301 leim-list-file-name)
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302 "Header to be inserted in LEIM list file.")
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303
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304 (defvar leim-list-entry-regexp "^(register-input-method"
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305 "Regexp matching head of each entry in LEIM list file.
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306 See also the variable `leim-list-header'")
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307
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308 (defvar update-leim-list-functions
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309 '(quail-update-leim-list-file)
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310 "List of functions to call to update LEIM list file.
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311 Each function is called with one arg, LEIM directory name.")
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312
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313 (defun update-leim-list-file (&rest dirs)
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314 "Update LEIM list file in directories DIRS."
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315 (let ((functions update-leim-list-functions))
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316 (while functions
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317 (apply (car functions) dirs)
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318 (setq functions (cdr functions)))))
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319
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320 (defvar current-input-method nil
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321 "The current input method for multilingual text.
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322 If nil, that means no input method is activated now.")
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323 (make-variable-buffer-local 'current-input-method)
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324 (put 'current-input-method 'permanent-local t)
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325
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326 (defvar current-input-method-title nil
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327 "Title string of the current input method shown in mode line.")
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328 (make-variable-buffer-local 'current-input-method-title)
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329 (put 'current-input-method-title 'permanent-local t)
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330
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331 (defcustom default-input-method nil
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332 "*Default input method for multilingual text (a string).
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333 This is the input method activated automatically by the command
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334 `toggle-input-method' (\\[toggle-input-method])."
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335 :group 'mule
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336 :type '(choice (const nil) string))
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337
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338 (put 'input-method-function 'permanent-local t)
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339
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340 (defvar input-method-history nil
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341 "History list for some commands that read input methods.")
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342 (make-variable-buffer-local 'input-method-history)
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343 (put 'input-method-history 'permanent-local t)
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344
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345 (defvar inactivate-current-input-method-function nil
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346 "Function to call for inactivating the current input method.
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347 Every input method should set this to an appropriate value when activated.
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348 This function is called with no argument.
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349
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350 This function should never change the value of `current-input-method'.
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351 It is set to nil by the function `inactivate-input-method'.")
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352 (make-variable-buffer-local 'inactivate-current-input-method-function)
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353 (put 'inactivate-current-input-method-function 'permanent-local t)
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354
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355 (defvar describe-current-input-method-function nil
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356 "Function to call for describing the current input method.
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357 This function is called with no argument.")
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358 (make-variable-buffer-local 'describe-current-input-method-function)
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359 (put 'describe-current-input-method-function 'permanent-local t)
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360
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361 (defvar input-method-alist nil
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362 "Alist of input method names vs how to use them.
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363 Each element has the form:
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364 (INPUT-METHOD LANGUAGE-ENV ACTIVATE-FUNC TITLE DESCRIPTION ARGS...)
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365 See the function `register-input-method' for the meanings of the elements.")
|
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366
|
|
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367 (defun register-input-method (input-method lang-env &rest args)
|
|
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368 "Register INPUT-METHOD as an input method for language environment ENV.
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|
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369 INPUT-METHOD and LANG-ENV are symbols or strings.
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370
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371 The remaining arguments are:
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372 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARGS...
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|
|
373 ACTIVATE-FUNC is a function to call to activate this method.
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|
374 TITLE is a string to show in the mode line when this method is active.
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375 DESCRIPTION is a string describing this method and what it is good for.
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376 The ARGS, if any, are passed as arguments to ACTIVATE-FUNC.
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377 All told, the arguments to ACTIVATE-FUNC are INPUT-METHOD and the ARGS.
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378
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379 This function is mainly used in the file \"leim-list.el\" which is
|
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380 created at building time of emacs, registering all quail input methods
|
|
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381 contained in the emacs distribution.
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382
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383 In case you want to register a new quail input method by yourself, be
|
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384 careful to use the same input method title as given in the third
|
|
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385 parameter of `quail-define-package' (if the values are different, the
|
|
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386 string specified in this function takes precedence).
|
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387
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|
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388 The commands `describe-input-method' and `list-input-methods' need
|
|
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389 this duplicated values to show some information about input methods
|
|
|
390 without loading the affected quail packages."
|
|
|
391 (if (symbolp lang-env)
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|
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392 (setq lang-env (symbol-name lang-env)))
|
|
|
393 (if (symbolp input-method)
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|
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394 (setq input-method (symbol-name input-method)))
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395 (let ((info (cons lang-env args))
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396 (slot (assoc input-method input-method-alist)))
|
|
|
397 (if slot
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|
|
398 (setcdr slot info)
|
|
|
399 (setq slot (cons input-method info))
|
|
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400 (setq input-method-alist (cons slot input-method-alist)))))
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|
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401
|
|
|
402 (defun read-input-method-name (prompt &optional default inhibit-null)
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|
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403 "Read a name of input method from a minibuffer prompting with PROMPT.
|
|
|
404 If DEFAULT is non-nil, use that as the default,
|
|
|
405 and substitute it into PROMPT at the first `%s'.
|
|
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406 If INHIBIT-NULL is non-nil, null input signals an error.
|
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407
|
|
|
408 The return value is a string."
|
|
|
409 (if default
|
|
|
410 (setq prompt (format prompt default)))
|
|
|
411 (let* ((completion-ignore-case t)
|
|
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412 ;; This binding is necessary because input-method-history is
|
|
|
413 ;; buffer local.
|
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414 (input-method (completing-read prompt input-method-alist
|
|
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415 nil t nil 'input-method-history
|
|
|
416 default)))
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|
|
417 (if (and input-method (symbolp input-method))
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418 (setq input-method (symbol-name input-method)))
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|
|
419 (if (> (length input-method) 0)
|
|
|
420 input-method
|
|
|
421 (if inhibit-null
|
|
|
422 (error "No valid input method is specified")))))
|
|
|
423
|
|
|
424 (defun activate-input-method (input-method)
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|
|
425 "Switch to input method INPUT-METHOD for the current buffer.
|
|
|
426 If some other input method is already active, turn it off first.
|
|
|
427 If INPUT-METHOD is nil, deactivate any current input method."
|
|
|
428 (if (and input-method (symbolp input-method))
|
|
|
429 (setq input-method (symbol-name input-method)))
|
|
|
430 (if (and current-input-method
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|
|
431 (not (string= current-input-method input-method)))
|
|
|
432 (inactivate-input-method))
|
|
|
433 (unless (or current-input-method (null input-method))
|
|
|
434 (let ((slot (assoc input-method input-method-alist)))
|
|
|
435 (if (null slot)
|
|
|
436 (error "Can't activate input method `%s'" input-method))
|
|
|
437 (let ((func (nth 2 slot)))
|
|
|
438 (if (functionp func)
|
|
|
439 (apply (nth 2 slot) input-method (nthcdr 5 slot))
|
|
|
440 (if (and (consp func) (symbolp (car func)) (symbolp (cdr func)))
|
|
|
441 (progn
|
|
|
442 (require (cdr func))
|
|
|
443 (apply (car func) input-method (nthcdr 5 slot)))
|
|
|
444 (error "Can't activate input method `%s'" input-method))))
|
|
|
445 (setq current-input-method input-method)
|
|
|
446 (setq current-input-method-title (nth 3 slot))
|
|
|
447 (unwind-protect
|
|
|
448 (run-hooks 'input-method-activate-hook)
|
|
|
449 (force-mode-line-update)))))
|
|
|
450
|
|
|
451 (defun inactivate-input-method ()
|
|
|
452 "Turn off the current input method."
|
|
|
453 (when current-input-method
|
|
|
454 (if input-method-history
|
|
|
455 (unless (string= current-input-method (car input-method-history))
|
|
|
456 (setq input-method-history
|
|
|
457 (cons current-input-method
|
|
|
458 (delete current-input-method input-method-history))))
|
|
|
459 (setq input-method-history (list current-input-method)))
|
|
|
460 (unwind-protect
|
|
|
461 (funcall inactivate-current-input-method-function)
|
|
|
462 (unwind-protect
|
|
|
463 (run-hooks 'input-method-inactivate-hook)
|
|
|
464 (setq current-input-method nil
|
|
|
465 current-input-method-title nil)
|
|
|
466 (force-mode-line-update)))))
|
|
|
467
|
|
|
468 (defun set-input-method (input-method)
|
|
|
469 "Select and activate input method INPUT-METHOD for the current buffer.
|
|
|
470 This also sets the default input method to the one you specify."
|
|
|
471 (interactive
|
|
|
472 (let* ((default (or (car input-method-history) default-input-method)))
|
|
|
473 (list (read-input-method-name
|
|
|
474 (if default "Select input method (default %s): " "Select input method: ")
|
|
|
475 default t))))
|
|
|
476 (activate-input-method input-method)
|
|
|
477 (setq default-input-method input-method))
|
|
|
478
|
|
|
479 (defun toggle-input-method (&optional arg)
|
|
|
480 "Turn on or off a multilingual text input method for the current buffer.
|
|
|
481
|
|
|
482 With no prefix argument, if an input method is currently activated,
|
|
|
483 turn it off. Otherwise, activate an input method -- the one most
|
|
|
484 recently used, or the one specified in `default-input-method', or
|
|
|
485 the one read from the minibuffer.
|
|
|
486
|
|
|
487 With a prefix argument, read an input method from the minibuffer and
|
|
|
488 turn it on.
|
|
|
489
|
|
|
490 The default is to use the most recent input method specified
|
|
|
491 \(not including the currently active input method, if any)."
|
|
|
492 (interactive "P")
|
|
|
493 (if (and current-input-method (not arg))
|
|
|
494 (inactivate-input-method)
|
|
|
495 (let ((default (or (car input-method-history) default-input-method)))
|
|
|
496 (if (and arg default (equal current-input-method default)
|
|
|
497 (> (length input-method-history) 1))
|
|
|
498 (setq default (nth 1 input-method-history)))
|
|
|
499 (activate-input-method
|
|
|
500 (if (or arg (not default))
|
|
|
501 (progn
|
|
|
502 (read-input-method-name
|
|
|
503 (if default "Input method (default %s): " "Input method: " )
|
|
|
504 default t))
|
|
|
505 default))
|
|
|
506 (or default-input-method
|
|
|
507 (setq default-input-method current-input-method)))))
|
|
|
508
|
|
|
509 (defun describe-input-method (input-method)
|
|
|
510 "Describe input method INPUT-METHOD."
|
|
|
511 (interactive
|
|
|
512 (list (read-input-method-name
|
|
|
513 "Describe input method (default, current choice): ")))
|
|
|
514 (if (and input-method (symbolp input-method))
|
|
|
515 (setq input-method (symbol-name input-method)))
|
|
|
516 (if (null input-method)
|
|
|
517 (describe-current-input-method)
|
|
|
518 (with-output-to-temp-buffer "*Help*"
|
|
|
519 (let ((elt (assoc input-method input-method-alist)))
|
|
|
520 (princ (format "Input method: %s (`%s' in mode line) for %s\n %s\n"
|
|
|
521 input-method (nth 3 elt) (nth 1 elt) (nth 4 elt)))))))
|
|
|
522
|
|
|
523 (defun describe-current-input-method ()
|
|
|
524 "Describe the input method currently in use."
|
|
|
525 (if current-input-method
|
|
|
526 (if (and (symbolp describe-current-input-method-function)
|
|
|
527 (fboundp describe-current-input-method-function))
|
|
|
528 (funcall describe-current-input-method-function)
|
|
|
529 (message "No way to describe the current input method `%s'"
|
|
|
530 current-input-method)
|
|
|
531 (ding))
|
|
|
532 (error "No input method is activated now")))
|
|
|
533
|
|
|
534 (defun read-multilingual-string (prompt &optional initial-input input-method)
|
|
|
535 "Read a multilingual string from minibuffer, prompting with string PROMPT.
|
|
|
536 The input method selected last time is activated in minibuffer.
|
|
|
537 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer
|
|
|
538 initially.
|
|
|
539 Optional 3rd argument INPUT-METHOD specifies the input method
|
|
|
540 to be activated instead of the one selected last time. It is a symbol
|
|
|
541 or a string."
|
|
|
542 (setq input-method
|
|
|
543 (or input-method
|
|
|
544 current-input-method
|
|
|
545 default-input-method
|
|
|
546 (read-input-method-name "Input method: " nil t)))
|
|
|
547 (if (and input-method (symbolp input-method))
|
|
|
548 (setq input-method (symbol-name input-method)))
|
|
|
549 (let ((prev-input-method current-input-method))
|
|
|
550 (unwind-protect
|
|
|
551 (progn
|
|
|
552 (activate-input-method input-method)
|
|
|
553 ;; FSF Emacs
|
|
|
554 ;; (read-string prompt initial-input nil nil t)
|
|
|
555 (read-string prompt initial-input nil))
|
|
|
556 (activate-input-method prev-input-method))))
|
|
|
557
|
|
|
558 ;; Variables to control behavior of input methods. All input methods
|
|
|
559 ;; should react to these variables.
|
|
|
560
|
|
|
561 (defcustom input-method-verbose-flag 'default
|
|
|
562 "*A flag to control extra guidance given by input methods.
|
|
|
563 The value should be nil, t, `complex-only', or `default'.
|
|
|
564
|
|
|
565 The extra guidance is done by showing list of available keys in echo
|
|
|
566 area. When you use the input method in the minibuffer, the guidance
|
|
|
567 is shown at the bottom short window (split from the existing window).
|
|
|
568
|
|
|
569 If the value is t, extra guidance is always given, if the value is
|
|
|
570 nil, extra guidance is always suppressed.
|
|
|
571
|
|
|
572 If the value is `complex-only', only complex input methods such as
|
|
|
573 `chinese-py' and `japanese' give extra guidance.
|
|
|
574
|
|
|
575 If the value is `default', complex input methods always give extra
|
|
|
576 guidance, but simple input methods give it only when you are not in
|
|
|
577 the minibuffer.
|
|
|
578
|
|
|
579 See also the variable `input-method-highlight-flag'."
|
|
|
580 :type '(choice (const t) (const nil) (const complex-only) (const default))
|
|
|
581 :group 'mule)
|
|
|
582
|
|
|
583 (defcustom input-method-highlight-flag t
|
|
|
584 "*If this flag is non-nil, input methods highlight partially-entered text.
|
|
|
585 For instance, while you are in the middle of a Quail input method sequence,
|
|
|
586 the text inserted so far is temporarily underlined.
|
|
|
587 The underlining goes away when you finish or abort the input method sequence.
|
|
|
588 See also the variable `input-method-verbose-flag'."
|
|
|
589 :type 'boolean
|
|
|
590 :group 'mule)
|
|
|
591
|
|
|
592 (defvar input-method-activate-hook nil
|
|
|
593 "Normal hook run just after an input method is activated.
|
|
|
594
|
|
|
595 The variable `current-input-method' keeps the input method name
|
|
|
596 just activated.")
|
|
|
597
|
|
|
598 (defvar input-method-inactivate-hook nil
|
|
|
599 "Normal hook run just after an input method is inactivated.
|
|
|
600
|
|
|
601 The variable `current-input-method' still keeps the input method name
|
|
|
602 just inactivated.")
|
|
|
603
|
|
|
604 (defvar input-method-after-insert-chunk-hook nil
|
|
|
605 "Normal hook run just after an input method insert some chunk of text.")
|
|
|
606
|
|
|
607 (defvar input-method-exit-on-first-char nil
|
|
|
608 "This flag controls a timing when an input method returns.
|
|
|
609 Usually, the input method does not return while there's a possibility
|
|
|
610 that it may find a different translation if a user types another key.
|
|
|
611 But, it this flag is non-nil, the input method returns as soon as
|
|
|
612 the current key sequence gets long enough to have some valid translation.")
|
|
|
613
|
|
|
614 (defvar input-method-use-echo-area nil
|
|
|
615 "This flag controls how an input method shows an intermediate key sequence.
|
|
|
616 Usually, the input method inserts the intermediate key sequence,
|
|
|
617 or candidate translations corresponding to the sequence,
|
|
|
618 at point in the current buffer.
|
|
|
619 But, if this flag is non-nil, it displays them in echo area instead.")
|
|
|
620
|
|
|
621 (defvar input-method-exit-on-invalid-key nil
|
|
442
|
622 "This flag controls the behavior of an input method on invalid key input.
|
|
428
|
623 Usually, when a user types a key which doesn't start any character
|
|
|
624 handled by the input method, the key is handled by turning off the
|
|
|
625 input method temporarily. After that key, the input method is re-enabled.
|
|
|
626 But, if this flag is non-nil, the input method is never back on.")
|
|
|
627
|
|
|
628
|
|
|
629 (defvar set-language-environment-hook nil
|
|
|
630 "Normal hook run after some language environment is set.
|
|
|
631
|
|
|
632 When you set some hook function here, that effect usually should not
|
|
|
633 be inherited to another language environment. So, you had better set
|
|
|
634 another function in `exit-language-environment-hook' (which see) to
|
|
|
635 cancel the effect.")
|
|
|
636
|
|
|
637 (defvar exit-language-environment-hook nil
|
|
|
638 "Normal hook run after exiting from some language environment.
|
|
|
639 When this hook is run, the variable `current-language-environment'
|
|
|
640 is still bound to the language environment being exited.
|
|
|
641
|
|
|
642 This hook is mainly used for canceling the effect of
|
|
|
643 `set-language-environment-hook' (which-see).")
|
|
|
644
|
|
|
645 (put 'setup-specified-language-environment 'apropos-inhibit t)
|
|
|
646
|
|
|
647 (defun setup-specified-language-environment ()
|
|
|
648 "Switch to a specified language environment."
|
|
|
649 (interactive)
|
|
|
650 (let (language-name)
|
|
|
651 (if (and (symbolp last-command-event)
|
|
|
652 (or (not (eq last-command-event 'Default))
|
|
|
653 (setq last-command-event 'English))
|
|
|
654 (setq language-name (symbol-name last-command-event)))
|
|
|
655 (set-language-environment language-name)
|
|
|
656 (error "Bogus calling sequence"))))
|
|
|
657
|
|
|
658 (defcustom current-language-environment "English"
|
|
|
659 "The last language environment specified with `set-language-environment'.
|
|
|
660 This variable should be set only with \\[customize], which is equivalent
|
|
|
661 to using the function `set-language-environment'."
|
|
|
662 :link '(custom-manual "(emacs)Language Environments")
|
|
|
663 :set (lambda (symbol value) (set-language-environment value))
|
|
|
664 :get (lambda (x)
|
|
|
665 (or (car-safe (assoc-ignore-case
|
|
|
666 (if (symbolp current-language-environment)
|
|
|
667 (symbol-name current-language-environment)
|
|
|
668 current-language-environment)
|
|
|
669 language-info-alist))
|
|
|
670 "English"))
|
|
|
671 :type (cons 'choice (mapcar (lambda (lang)
|
|
|
672 (list 'const (car lang)))
|
|
|
673 language-info-alist))
|
|
|
674 :initialize 'custom-initialize-default
|
|
|
675 :group 'mule
|
|
|
676 :type 'string)
|
|
|
677
|
|
|
678 (defun reset-language-environment ()
|
|
|
679 "Reset multilingual environment of Emacs to the default status.
|
|
|
680
|
|
|
681 The default status is as follows:
|
|
|
682
|
|
444
|
683 The default value of `buffer-file-coding-system' is nil.
|
|
428
|
684 The default coding system for process I/O is nil.
|
|
|
685 The default value for the command `set-terminal-coding-system' is nil.
|
|
|
686 The default value for the command `set-keyboard-coding-system' is nil.
|
|
|
687
|
|
|
688 The order of priorities of coding categories and the coding system
|
|
|
689 bound to each category are as follows
|
|
|
690 coding category coding system
|
|
|
691 --------------------------------------------------
|
|
|
692 iso-8-2 iso-8859-1
|
|
|
693 iso-8-1 iso-8859-1
|
|
|
694 iso-7 iso-2022-7bit
|
|
|
695 iso-lock-shift iso-2022-lock
|
|
|
696 iso-8-designate iso-2022-8bit-ss2
|
|
|
697 no-conversion raw-text
|
|
|
698 shift-jis shift_jis
|
|
|
699 big5 big5
|
|
|
700 ucs-4 ----
|
|
|
701 utf-8 ----
|
|
|
702 "
|
|
|
703 (interactive)
|
|
|
704 ;; This function formerly set default-enable-multibyte-characters to t,
|
|
|
705 ;; but that is incorrect. It should not alter the unibyte/multibyte choice.
|
|
|
706
|
|
|
707 (set-coding-category-system 'iso-7 'iso-2022-7bit)
|
|
|
708 (set-coding-category-system 'iso-8-1 'iso-8859-1)
|
|
|
709 (set-coding-category-system 'iso-8-2 'iso-8859-1)
|
|
|
710 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
|
|
|
711 (set-coding-category-system 'iso-8-designate 'iso-2022-8bit-ss2)
|
|
|
712 (set-coding-category-system 'no-conversion 'raw-text)
|
|
|
713 (set-coding-category-system 'shift-jis 'shift_jis)
|
|
|
714 (set-coding-category-system 'big5 'big5)
|
|
|
715 (cond ((eq (coding-system-type (coding-category-system 'utf-8)) 'utf-8)
|
|
|
716 (set-coding-category-system 'ucs-4 'iso-10646-ucs-4)
|
|
|
717 (set-coding-category-system 'utf-8 'utf-8)
|
|
|
718 (set-coding-priority-list
|
|
|
719 '(iso-8-1
|
|
|
720 iso-8-2
|
|
|
721 iso-7
|
|
|
722 iso-lock-shift
|
|
|
723 iso-8-designate
|
|
|
724 utf-8
|
|
|
725 ucs-4
|
|
|
726 no-conversion
|
|
|
727 shift-jis
|
|
|
728 big5))
|
|
|
729 )
|
|
|
730 (t
|
|
|
731 (set-coding-priority-list
|
|
|
732 '(iso-8-1
|
|
|
733 iso-8-2
|
|
|
734 iso-7
|
|
|
735 iso-lock-shift
|
|
|
736 iso-8-designate
|
|
|
737 no-conversion
|
|
|
738 shift-jis
|
|
|
739 big5))
|
|
|
740 ))
|
|
|
741
|
|
|
742 ;; (update-coding-systems-internal)
|
|
|
743
|
|
|
744 (set-default-coding-systems nil)
|
|
|
745 ;; Don't alter the terminal and keyboard coding systems here.
|
|
|
746 ;; The terminal still supports the same coding system
|
|
|
747 ;; that it supported a minute ago.
|
|
|
748 ;;; (set-terminal-coding-system-internal nil)
|
|
|
749 ;;; (set-keyboard-coding-system-internal nil)
|
|
|
750
|
|
|
751 ;; (setq nonascii-translation-table nil
|
|
|
752 ;; nonascii-insert-offset 0)
|
|
|
753 )
|
|
|
754
|
|
|
755 (defun set-language-environment (language-name)
|
|
|
756 "Set up multi-lingual environment for using LANGUAGE-NAME.
|
|
|
757 This sets the coding system priority and the default input method
|
|
|
758 and sometimes other things. LANGUAGE-NAME should be a string
|
|
|
759 which is the name of a language environment. For example, \"Latin-1\"
|
|
|
760 specifies the character set for the major languages of Western Europe."
|
|
|
761 (interactive (list (read-language-name
|
|
|
762 nil
|
|
|
763 "Set language environment (default, English): ")))
|
|
|
764 (if language-name
|
|
|
765 (if (symbolp language-name)
|
|
|
766 (setq language-name (symbol-name language-name)))
|
|
|
767 (setq language-name "English"))
|
|
|
768 (or (assoc-ignore-case language-name language-info-alist)
|
|
|
769 (error "Language environment not defined: %S" language-name))
|
|
|
770 (if current-language-environment
|
|
|
771 (let ((func (get-language-info current-language-environment
|
|
|
772 'exit-function)))
|
|
|
773 (run-hooks 'exit-language-environment-hook)
|
|
|
774 (if (fboundp func) (funcall func))))
|
|
|
775 (let ((default-eol-type (coding-system-eol-type
|
|
|
776 default-buffer-file-coding-system)))
|
|
|
777 (reset-language-environment)
|
|
|
778
|
|
|
779 (setq current-language-environment language-name)
|
|
|
780 (set-language-environment-coding-systems language-name default-eol-type))
|
|
|
781 (let ((input-method (get-language-info language-name 'input-method)))
|
|
|
782 (when input-method
|
|
|
783 (setq default-input-method input-method)
|
|
|
784 (if input-method-history
|
|
|
785 (setq input-method-history
|
|
|
786 (cons input-method
|
|
|
787 (delete input-method input-method-history))))))
|
|
|
788 ;; (let ((nonascii (get-language-info language-name 'nonascii-translation))
|
|
|
789 ;; (dos-table
|
|
|
790 ;; (if (eq window-system 'pc)
|
|
|
791 ;; (intern
|
|
|
792 ;; (concat "cp" dos-codepage "-nonascii-translation-table")))))
|
|
|
793 ;; (cond
|
|
|
794 ;; ((char-table-p nonascii)
|
|
|
795 ;; (setq nonascii-translation-table nonascii))
|
|
|
796 ;; ((and (eq window-system 'pc) (boundp dos-table))
|
|
|
797 ;; ;; DOS terminals' default is to use a special non-ASCII translation
|
|
|
798 ;; ;; table as appropriate for the installed codepage.
|
|
|
799 ;; (setq nonascii-translation-table (symbol-value dos-table)))
|
|
|
800 ;; ((charsetp nonascii)
|
|
|
801 ;; (setq nonascii-insert-offset (- (make-char nonascii) 128)))))
|
|
|
802
|
|
|
803 ;; (setq charset-origin-alist
|
|
|
804 ;; (get-language-info language-name 'charset-origin-alist))
|
|
|
805
|
|
|
806 ;; Unibyte setups if necessary.
|
|
|
807 ;; (unless default-enable-multibyte-characters
|
|
|
808 ;; ;; Syntax and case table.
|
|
|
809 ;; (let ((syntax (get-language-info language-name 'unibyte-syntax)))
|
|
|
810 ;; (if syntax
|
|
|
811 ;; (let ((set-case-syntax-set-multibyte nil))
|
|
|
812 ;; (load syntax nil t))
|
|
|
813 ;; ;; No information for syntax and case. Reset to the defaults.
|
|
|
814 ;; (let ((syntax-table (standard-syntax-table))
|
|
|
815 ;; (case-table (standard-case-table))
|
|
|
816 ;; (ch (if (eq window-system 'pc) 128 160)))
|
|
|
817 ;; (while (< ch 256)
|
|
|
818 ;; (modify-syntax-entry ch " " syntax-table)
|
|
|
819 ;; (aset case-table ch ch)
|
|
|
820 ;; (setq ch (1+ ch)))
|
|
|
821 ;; (set-char-table-extra-slot case-table 0 nil)
|
|
|
822 ;; (set-char-table-extra-slot case-table 1 nil)
|
|
|
823 ;; (set-char-table-extra-slot case-table 2 nil))
|
|
|
824 ;; (set-standard-case-table (standard-case-table))
|
|
|
825 ;; (let ((list (buffer-list)))
|
|
|
826 ;; (while list
|
|
|
827 ;; (with-current-buffer (car list)
|
|
|
828 ;; (set-case-table (standard-case-table)))
|
|
|
829 ;; (setq list (cdr list))))))
|
|
|
830 ;; ;; Display table and coding system for terminal.
|
|
|
831 ;; (let ((coding (get-language-info language-name 'unibyte-display)))
|
|
|
832 ;; (if coding
|
|
|
833 ;; (standard-display-european-internal)
|
|
|
834 ;; (standard-display-default (if (eq window-system 'pc) 128 160) 255)
|
|
|
835 ;; (aset standard-display-table 146 nil))
|
|
|
836 ;; (or (eq window-system 'pc)
|
|
|
837 ;; (set-terminal-coding-system coding))))
|
|
|
838
|
|
|
839 (let ((required-features (get-language-info language-name 'features)))
|
|
|
840 (while required-features
|
|
|
841 (require (car required-features))
|
|
|
842 (setq required-features (cdr required-features))))
|
|
|
843 (let ((func (get-language-info language-name 'setup-function)))
|
|
|
844 (if (fboundp func)
|
|
|
845 (funcall func)))
|
|
|
846 (run-hooks 'set-language-environment-hook)
|
|
|
847 (force-mode-line-update t))
|
|
|
848
|
|
|
849 ;; (defun standard-display-european-internal ()
|
|
|
850 ;; ;; Actually set up direct output of non-ASCII characters.
|
|
|
851 ;; (standard-display-8bit (if (eq window-system 'pc) 128 160) 255)
|
|
|
852 ;; ;; Unibyte Emacs on MS-DOS wants to display all 8-bit characters with
|
|
|
853 ;; ;; the native font, and codes 160 and 146 stand for something very
|
|
|
854 ;; ;; different there.
|
|
|
855 ;; (or (and (eq window-system 'pc) (not default-enable-multibyte-characters))
|
|
|
856 ;; (progn
|
|
|
857 ;; ;; Make non-line-break space display as a plain space.
|
|
|
858 ;; ;; Most X fonts do the wrong thing for code 160.
|
|
|
859 ;; (aset standard-display-table 160 [32])
|
|
|
860 ;; ;; Most Windows programs send out apostrophe's as \222. Most X fonts
|
|
|
861 ;; ;; don't contain a character at that position. Map it to the ASCII
|
|
|
862 ;; ;; apostrophe.
|
|
|
863 ;; (aset standard-display-table 146 [39]))))
|
|
|
864
|
|
|
865 (defun set-language-environment-coding-systems (language-name
|
|
|
866 &optional eol-type)
|
|
|
867 "Do various coding system setups for language environment LANGUAGE-NAME.
|
|
|
868
|
|
|
869 The optional arg EOL-TYPE specifies the eol-type of the default value
|
|
|
870 of buffer-file-coding-system set by this function."
|
|
|
871 (let* ((priority (get-language-info language-name 'coding-priority))
|
|
|
872 (default-coding (car priority)))
|
|
|
873 (if priority
|
|
|
874 (let ((categories (mapcar 'coding-system-category priority))
|
|
|
875 category checked-categories)
|
|
|
876 (set-default-coding-systems
|
|
|
877 (if (memq eol-type '(lf crlf cr unix dos mac))
|
|
|
878 (coding-system-change-eol-conversion default-coding eol-type)
|
|
|
879 default-coding))
|
|
|
880 ;; (setq default-sendmail-coding-system default-coding)
|
|
|
881 (while priority
|
|
|
882 (unless (memq (setq category (car categories)) checked-categories)
|
|
|
883 (set-coding-category-system category (car priority))
|
|
|
884 (setq checked-categories (cons category checked-categories)))
|
|
|
885 (setq priority (cdr priority)
|
|
|
886 categories (cdr categories)))
|
|
|
887 (set-coding-priority-list (nreverse checked-categories))
|
|
|
888 ;; (update-coding-systems-internal)
|
|
|
889 ))))
|
|
|
890
|
|
|
891 ;; Print all arguments with `princ', then print "\n".
|
|
|
892 (defsubst princ-list (&rest args)
|
|
|
893 (while args (princ (car args)) (setq args (cdr args)))
|
|
|
894 (princ "\n"))
|
|
|
895
|
|
|
896 (put 'describe-specified-language-support 'apropos-inhibit t)
|
|
|
897
|
|
|
898 ;; Print a language specific information such as input methods,
|
|
|
899 ;; charsets, and coding systems. This function is intended to be
|
|
|
900 ;; called from the menu:
|
|
|
901 ;; [menu-bar mule describe-language-environment LANGUAGE]
|
|
|
902 ;; and should not run it by `M-x describe-current-input-method-function'.
|
|
|
903 (defun describe-specified-language-support ()
|
|
|
904 "Describe how Emacs supports the specified language environment."
|
|
|
905 (interactive)
|
|
|
906 (let (language-name)
|
|
|
907 (if (not (and (symbolp last-command-event)
|
|
|
908 (setq language-name (symbol-name last-command-event))))
|
|
|
909 (error "Bogus calling sequence"))
|
|
|
910 (describe-language-environment language-name)))
|
|
|
911
|
|
|
912 (defun describe-language-environment (language-name)
|
|
|
913 "Describe how Emacs supports language environment LANGUAGE-NAME."
|
|
|
914 (interactive
|
|
|
915 (list (read-language-name
|
|
|
916 'documentation
|
|
|
917 "Describe language environment (default, current choice): ")))
|
|
|
918 (if (null language-name)
|
|
|
919 (setq language-name current-language-environment))
|
|
|
920 (if (or (null language-name)
|
|
|
921 (null (get-language-info language-name 'documentation)))
|
|
|
922 (error "No documentation for the specified language"))
|
|
|
923 (if (symbolp language-name)
|
|
|
924 (setq language-name (symbol-name language-name)))
|
|
|
925 (let ((doc (get-language-info language-name 'documentation)))
|
|
|
926 (with-output-to-temp-buffer "*Help*"
|
|
|
927 (princ-list language-name " language environment" "\n")
|
|
|
928 (if (stringp doc)
|
|
|
929 (progn
|
|
|
930 (princ-list doc)
|
|
|
931 (terpri)))
|
|
|
932 (let ((str (get-language-info language-name 'sample-text)))
|
|
|
933 (if (stringp str)
|
|
|
934 (progn
|
|
|
935 (princ "Sample text:\n")
|
|
|
936 (princ-list " " str)
|
|
|
937 (terpri))))
|
|
|
938 (let ((input-method (get-language-info language-name 'input-method))
|
|
|
939 (l (copy-sequence input-method-alist)))
|
|
|
940 (princ "Input methods")
|
|
|
941 (when input-method
|
|
|
942 (princ (format " (default, %s)" input-method))
|
|
|
943 (setq input-method (assoc input-method input-method-alist))
|
|
|
944 (setq l (cons input-method (delete input-method l))))
|
|
|
945 (princ ":\n")
|
|
|
946 (while l
|
|
|
947 (if (string= language-name (nth 1 (car l)))
|
|
|
948 (princ-list " " (car (car l))
|
|
|
949 (format " (`%s' in mode line)" (nth 3 (car l)))))
|
|
|
950 (setq l (cdr l))))
|
|
|
951 (terpri)
|
|
|
952 (princ "Character sets:\n")
|
|
|
953 (let ((l (get-language-info language-name 'charset)))
|
|
|
954 (if (null l)
|
|
|
955 (princ-list " nothing specific to " language-name)
|
|
|
956 (while l
|
|
|
957 (princ-list " " (car l) ": "
|
|
|
958 (charset-description (car l)))
|
|
|
959 (setq l (cdr l)))))
|
|
|
960 (terpri)
|
|
|
961 (princ "Coding systems:\n")
|
|
|
962 (let ((l (get-language-info language-name 'coding-system)))
|
|
|
963 (if (null l)
|
|
|
964 (princ-list " nothing specific to " language-name)
|
|
|
965 (while l
|
|
|
966 (princ ; (format " %s (`%c' in mode line):\n\t%s\n"
|
|
|
967 ;; In XEmacs, `coding-system-mnemonic' returns string.
|
|
|
968 (format " %s (`%s' in mode line):\n\t%s\n"
|
|
|
969 (car l)
|
|
|
970 (coding-system-mnemonic (car l))
|
|
|
971 (coding-system-doc-string (car l))))
|
|
|
972 ;; (let ((aliases (coding-system-get (car l) 'alias-coding-systems)))
|
|
|
973 ;; (when aliases
|
|
|
974 ;; (princ "\t")
|
|
|
975 ;; (princ (cons 'alias: (cdr aliases)))
|
|
|
976 ;; (terpri)))
|
|
|
977 (setq l (cdr l))))))))
|
|
|
978
|
|
|
979 ;;; Charset property
|
|
|
980
|
|
|
981 ;; (defsubst get-charset-property (charset propname)
|
|
|
982 ;; "Return the value of CHARSET's PROPNAME property.
|
|
|
983 ;; This is the last value stored with
|
|
|
984 ;; `(put-charset-property CHARSET PROPNAME VALUE)'."
|
|
|
985 ;; (plist-get (charset-plist charset) propname))
|
|
|
986
|
|
|
987 ;; (defsubst put-charset-property (charset propname value)
|
|
|
988 ;; "Store CHARSETS's PROPNAME property with value VALUE.
|
|
|
989 ;; It can be retrieved with `(get-charset-property CHARSET PROPNAME)'."
|
|
|
990 ;; (set-charset-plist charset
|
|
|
991 ;; (plist-put (charset-plist charset) propname value)))
|
|
|
992
|
|
|
993 (defvar char-code-property-table
|
|
|
994 (make-char-table 'generic)
|
|
|
995 "Char-table containing a property list of each character code.
|
|
|
996
|
|
|
997 See also the documentation of `get-char-code-property' and
|
|
|
998 `put-char-code-property'")
|
|
|
999 ;; (let ((plist (aref char-code-property-table char)))
|
|
|
1000 (defun get-char-code-property (char propname)
|
|
|
1001 "Return the value of CHAR's PROPNAME property in `char-code-property-table'."
|
|
|
1002 (let ((plist (get-char-table char char-code-property-table)))
|
|
|
1003 (if (listp plist)
|
|
|
1004 (car (cdr (memq propname plist))))))
|
|
|
1005
|
|
|
1006 (defun put-char-code-property (char propname value)
|
|
|
1007 "Store CHAR's PROPNAME property with VALUE in `char-code-property-table'.
|
|
|
1008 It can be retrieved with `(get-char-code-property CHAR PROPNAME)'."
|
|
|
1009 (let ((plist (get-char-table char char-code-property-table)))
|
|
|
1010 (if plist
|
|
|
1011 (let ((slot (memq propname plist)))
|
|
|
1012 (if slot
|
|
|
1013 (setcar (cdr slot) value)
|
|
|
1014 (nconc plist (list propname value))))
|
|
|
1015 (put-char-table char (list propname value) char-code-property-table)
|
|
|
1016 )))
|
|
|
1017
|
|
|
1018
|
|
|
1019 ;; Pretty description of encoded string
|
|
|
1020
|
|
|
1021 ;; Alist of ISO 2022 control code vs the corresponding mnemonic string.
|
|
|
1022 ;; (defvar iso-2022-control-alist
|
|
|
1023 ;; '((?\x1b . "ESC")
|
|
|
1024 ;; (?\x0e . "SO")
|
|
|
1025 ;; (?\x0f . "SI")
|
|
|
1026 ;; (?\x8e . "SS2")
|
|
|
1027 ;; (?\x8f . "SS3")
|
|
|
1028 ;; (?\x9b . "CSI")))
|
|
|
1029
|
|
|
1030 ;; (defun encoded-string-description (str coding-system)
|
|
|
1031 ;; "Return a pretty description of STR that is encoded by CODING-SYSTEM."
|
|
|
1032 ;; (setq str (string-as-unibyte str))
|
|
|
1033 ;; (let ((char (aref str 0))
|
|
|
1034 ;; desc)
|
|
|
1035 ;; (when (< char 128)
|
|
|
1036 ;; (setq desc (or (cdr (assq char iso-2022-control-alist))
|
|
|
1037 ;; (char-to-string char)))
|
|
|
1038 ;; (let ((i 1)
|
|
|
1039 ;; (len (length str)))
|
|
|
1040 ;; (while (< i len)
|
|
|
1041 ;; (setq char (aref str i))
|
|
|
1042 ;; (if (>= char 128)
|
|
|
1043 ;; (setq desc nil i len)
|
|
|
1044 ;; (setq desc (concat desc " "
|
|
|
1045 ;; (or (cdr (assq char iso-2022-control-alist))
|
|
|
1046 ;; (char-to-string char)))
|
|
|
1047 ;; i (1+ i))))))
|
|
|
1048 ;; (or desc
|
|
|
1049 ;; (mapconcat (function (lambda (x) (format "0x%02x" x))) str " "))))
|
|
|
1050
|
|
|
1051 ;; (defun encode-coding-char (char coding-system)
|
|
|
1052 ;; "Encode CHAR by CODING-SYSTEM and return the resulting string.
|
|
|
1053 ;; If CODING-SYSTEM can't safely encode CHAR, return nil."
|
|
|
1054 ;; (if (cmpcharp char)
|
|
|
1055 ;; (setq char (car (decompose-composite-char char 'list))))
|
|
|
1056 ;; (let ((str1 (char-to-string char))
|
|
|
1057 ;; (str2 (make-string 2 char))
|
|
|
1058 ;; (safe-charsets (and coding-system
|
|
|
1059 ;; (coding-system-get coding-system 'safe-charsets)))
|
|
|
1060 ;; enc1 enc2 i1 i2)
|
|
|
1061 ;; (when (or (eq safe-charsets t)
|
|
|
1062 ;; (memq (char-charset char) safe-charsets))
|
|
|
1063 ;; ;; We must find the encoded string of CHAR. But, just encoding
|
|
|
1064 ;; ;; CHAR will put extra control sequences (usually to designate
|
|
440
|
1065 ;; ;; ASCII charset) at the tail if type of CODING is ISO 2022.
|
|
428
|
1066 ;; ;; To exclude such tailing bytes, we at first encode one-char
|
|
|
1067 ;; ;; string and two-char string, then check how many bytes at the
|
|
|
1068 ;; ;; tail of both encoded strings are the same.
|
|
|
1069 ;;
|
|
|
1070 ;; (setq enc1 (string-as-unibyte (encode-coding-string str1 coding-system))
|
|
|
1071 ;; i1 (length enc1)
|
|
|
1072 ;; enc2 (string-as-unibyte (encode-coding-string str2 coding-system))
|
|
|
1073 ;; i2 (length enc2))
|
|
|
1074 ;; (while (and (> i1 0) (= (aref enc1 (1- i1)) (aref enc2 (1- i2))))
|
|
|
1075 ;; (setq i1 (1- i1) i2 (1- i2)))
|
|
|
1076 ;;
|
|
|
1077 ;; ;; Now (substring enc1 i1) and (substring enc2 i2) are the same,
|
|
|
1078 ;; ;; and they are the extra control sequences at the tail to
|
|
|
1079 ;; ;; exclude.
|
|
|
1080 ;; (substring enc2 0 i2))))
|
|
|
1081
|
|
|
1082
|
|
|
1083 ;;; mule-cmds.el ends here
|
