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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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26 ;;; Code:
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27
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28 ;;; MULE related key bindings and menus.
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29
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30 (defvar mule-keymap (make-sparse-keymap "Mule")
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31 "Keymap for Mule (Multilingual environment) specific commands.")
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32
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33 ;; Keep "C-x C-m ..." for mule specific commands.
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34 (define-key ctl-x-map "\C-m" mule-keymap)
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35
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36 (define-key mule-keymap "f" 'set-buffer-file-coding-system)
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37 (define-key mule-keymap "F" 'set-default-buffer-file-coding-system) ; XEmacs
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38 (define-key mule-keymap "t" 'set-terminal-coding-system)
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39 (define-key mule-keymap "k" 'set-keyboard-coding-system)
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40 (define-key mule-keymap "p" 'set-buffer-process-coding-system)
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41 (define-key mule-keymap "x" 'set-selection-coding-system)
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42 (define-key mule-keymap "X" 'set-next-selection-coding-system)
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43 (define-key mule-keymap "\C-\\" 'set-input-method)
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44 (define-key mule-keymap "c" 'universal-coding-system-argument)
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45 ;;(define-key mule-keymap "c" 'list-coding-system-briefly) ; XEmacs
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46 (define-key mule-keymap "C" 'describe-coding-system) ; XEmacs
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47 (define-key mule-keymap "r" 'toggle-display-direction) ; XEmacs
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48 (define-key mule-keymap "l" 'set-language-environment)
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49
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50 (define-key help-map "L" 'describe-language-environment)
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51 (define-key help-map "\C-\\" 'describe-input-method)
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52 (define-key help-map "I" 'describe-input-method)
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53 (define-key help-map "h" 'view-hello-file)
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54
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55 ;; Menu for XEmacs were moved to menubar-items.el.
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56
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57
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58 ;; This should be a single character key binding because users use it
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59 ;; very frequently while editing multilingual text. Now we can use
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60 ;; only two such keys: "\C-\\" and "\C-^", but the latter is not
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61 ;; convenient because it requires shifting on most keyboards. An
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62 ;; alternative is "\C-\]" which is now bound to `abort-recursive-edit'
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63 ;; but it won't be used that frequently.
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64 (define-key global-map "\C-\\" 'toggle-input-method)
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65
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66 ;;; This is no good because people often type Shift-SPC
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67 ;;; meaning to type SPC. -- rms.
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68 ;;; ;; Here's an alternative key binding for X users (Shift-SPACE).
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69 ;;; (define-key global-map [?\S- ] 'toggle-input-method)
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70
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71 (defun coding-system-change-eol-conversion (coding-system eol-type)
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72 "Return a coding system which differs from CODING-SYSTEM in eol conversion.
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73 The returned coding system converts end-of-line by EOL-TYPE
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74 but text as the same way as CODING-SYSTEM.
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75 EOL-TYPE should be `lf', `crlf', `cr' or nil.
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76 If EOL-TYPE is nil, the returned coding system detects
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77 how end-of-line is formatted automatically while decoding.
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78
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79 EOL-TYPE can be specified by an symbol `unix', `dos' or `mac'.
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80 They means `lf', `crlf', and `cr' respectively."
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81 (if (symbolp eol-type)
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82 (setq eol-type (cond ((or (eq eol-type 'unix)
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83 (eq eol-type 'lf))
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84 'eol-lf)
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85 ((or (eq eol-type 'dos)
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86 (eq eol-type 'crlf))
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87 'eol-crlf)
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88 ((or (eq eol-type 'mac)
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89 (eq eol-type 'cr))
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90 'eol-cr)
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91 (t eol-type))))
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92 (let ((orig-eol-type (coding-system-eol-type coding-system)))
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93 (if (null orig-eol-type)
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94 (if (not eol-type)
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95 coding-system
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96 (coding-system-property coding-system eol-type))
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97 (let ((base (coding-system-base coding-system)))
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98 (if (not eol-type)
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99 base
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442
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100 (if (eq eol-type orig-eol-type)
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428
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101 coding-system
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102 (setq orig-eol-type (coding-system-eol-type base))
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103 (if (null orig-eol-type)
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104 (coding-system-property base eol-type))))))))
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105
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106 ;; (defun coding-system-change-text-conversion (coding-system coding)
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107 ;; "Return a coding system which differs from CODING-SYSTEM in text conversion.
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108 ;; The returned coding system converts text by CODING
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109 ;; but end-of-line as the same way as CODING-SYSTEM.
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110 ;; If CODING is nil, the returned coding system detects
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111 ;; how text is formatted automatically while decoding."
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112 ;; (if (not coding)
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113 ;; (coding-system-base coding-system)
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114 ;; (let ((eol-type (coding-system-eol-type coding-system)))
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115 ;; (coding-system-change-eol-conversion
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116 ;; coding
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117 ;; (if (numberp eol-type) (aref [unix dos mac] eol-type))))))
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118
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119 (defun view-hello-file ()
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120 "Display the HELLO file which list up many languages and characters."
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121 (interactive)
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122 ;; We have to decode the file in any environment.
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123 (let ((coding-system-for-read 'iso-2022-7bit))
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124 (find-file-read-only (expand-file-name "HELLO" data-directory))))
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125
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126 (defun universal-coding-system-argument ()
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127 "Execute an I/O command using the specified coding system."
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128 (interactive)
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129 (let* ((default (and buffer-file-coding-system
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130 (not (eq (coding-system-type buffer-file-coding-system)
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131 t))
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132 (coding-system-name buffer-file-coding-system)))
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133 (coding-system
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134 (read-coding-system
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135 (if default
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136 (format "Coding system for following command (default, %s): "
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137 default)
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138 "Coding system for following command: ")
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139 default))
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140 (keyseq (read-key-sequence
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141 (format "Command to execute with %s:" coding-system)))
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142 (cmd (key-binding keyseq)))
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143 (let ((coding-system-for-read coding-system)
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144 (coding-system-for-write coding-system))
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145 (message "")
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146 (call-interactively cmd))))
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147
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148 (defun set-default-coding-systems (coding-system)
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149 "Set default value of various coding systems to CODING-SYSTEM.
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150 This sets the following coding systems:
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151 o coding system of a newly created buffer
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152 o default coding system for terminal output
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153 o default coding system for keyboard input
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154 o default coding system for subprocess I/O
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155 o default coding system for converting file names."
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156 (check-coding-system coding-system)
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157 ;;(setq-default buffer-file-coding-system coding-system)
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158 (set-default-buffer-file-coding-system coding-system)
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159 ;; (if default-enable-multibyte-characters
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160 ;; (setq default-file-name-coding-system coding-system))
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161 ;; If coding-system is nil, honor that on MS-DOS as well, so
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162 ;; that they could reset the terminal coding system.
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163 ;; (unless (and (eq window-system 'pc) coding-system)
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164 ;; (setq default-terminal-coding-system coding-system))
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442
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165 (set-terminal-coding-system coding-system)
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428
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166 ;;(setq default-keyboard-coding-system coding-system)
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442
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167 (set-keyboard-coding-system coding-system)
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428
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168 ;;(setq default-process-coding-system (cons coding-system coding-system))
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438
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169 ;; Refer to coding-system-for-read and coding-system-for-write
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170 ;; so that C-x RET c works.
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428
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171 (add-hook 'comint-exec-hook
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172 `(lambda ()
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173 (let ((proc (get-buffer-process (current-buffer))))
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438
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174 (set-process-input-coding-system
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175 proc (or coding-system-for-read ',coding-system))
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176 (set-process-output-coding-system
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177 proc (or coding-system-for-write ',coding-system))))
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428
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178 'append)
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179 (setq file-name-coding-system coding-system))
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180
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181 (defun prefer-coding-system (coding-system)
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182 "Add CODING-SYSTEM at the front of the priority list for automatic detection.
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183 This also sets the following coding systems:
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184 o coding system of a newly created buffer
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185 o default coding system for terminal output
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186 o default coding system for keyboard input
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187 o default coding system for converting file names.
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188
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189 If CODING-SYSTEM specifies a certain type of EOL conversion, the coding
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190 systems set by this function will use that type of EOL conversion.
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191
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192 This command does not change the default value of terminal coding system
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193 for MS-DOS terminal, because DOS terminals only support a single coding
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194 system, and Emacs automatically sets the default to that coding system at
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195 startup."
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196 (interactive "zPrefer coding system: ")
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197 (if (not (and coding-system (find-coding-system coding-system)))
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198 (error "Invalid coding system `%s'" coding-system))
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199 (let ((coding-category (coding-system-category coding-system))
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200 (base (coding-system-base coding-system))
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201 (eol-type (coding-system-eol-type coding-system)))
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202 (if (not coding-category)
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203 ;; CODING-SYSTEM is no-conversion or undecided.
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204 (error "Can't prefer the coding system `%s'" coding-system))
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205 (set-coding-category-system coding-category (or base coding-system))
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206 ;; (update-coding-systems-internal)
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207 (or (eq coding-category (car (coding-category-list)))
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208 ;; We must change the order.
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209 (set-coding-priority-list (list coding-category)))
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210 (if (and base (interactive-p))
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211 (message "Highest priority is set to %s (base of %s)"
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212 base coding-system))
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213 ;; If they asked for specific EOL conversion, honor that.
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214 (if (memq eol-type '(lf crlf mac))
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215 (setq coding-system
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216 (coding-system-change-eol-conversion base eol-type))
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217 (setq coding-system base))
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218 (set-default-coding-systems coding-system)))
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219
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220 ;; (defun find-coding-systems-region-subset-p (list1 list2)
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221 ;; "Return non-nil if all elements in LIST1 are included in LIST2.
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222 ;; Comparison done with EQ."
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223 ;; (catch 'tag
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224 ;; (while list1
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225 ;; (or (memq (car list1) list2)
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226 ;; (throw 'tag nil))
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227 ;; (setq list1 (cdr list1)))
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228 ;; t))
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229
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230 ;; (defun find-coding-systems-region (from to)
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231 ;; "Return a list of proper coding systems to encode a text between FROM and TO.
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232 ;; All coding systems in the list can safely encode any multibyte characters
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233 ;; in the text.
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234 ;;
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235 ;; If the text contains no multibyte characters, return a list of a single
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236 ;; element `undecided'."
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237 ;; (find-coding-systems-for-charsets (find-charset-region from to)))
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238
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239 ;; (defun find-coding-systems-string (string)
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240 ;; "Return a list of proper coding systems to encode STRING.
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241 ;; All coding systems in the list can safely encode any multibyte characters
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242 ;; in STRING.
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243 ;;
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244 ;; If STRING contains no multibyte characters, return a list of a single
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245 ;; element `undecided'."
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246 ;; (find-coding-systems-for-charsets (find-charset-string string)))
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247
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248 ;; (defun find-coding-systems-for-charsets (charsets)
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249 ;; "Return a list of proper coding systems to encode characters of CHARSETS.
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250 ;; CHARSETS is a list of character sets."
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251 ;; (if (or (null charsets)
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252 ;; (and (= (length charsets) 1)
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253 ;; (eq 'ascii (car charsets))))
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254 ;; '(undecided)
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255 ;; (setq charsets (delq 'composition charsets))
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256 ;; (let ((l (coding-system-list 'base-only))
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257 ;; (charset-preferred-codings
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258 ;; (mapcar (function
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259 ;; (lambda (x)
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260 ;; (if (eq x 'unknown)
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261 ;; 'raw-text
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262 ;; (get-charset-property x 'preferred-coding-system))))
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263 ;; charsets))
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264 ;; (priorities (mapcar (function (lambda (x) (symbol-value x)))
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265 ;; coding-category-list))
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266 ;; codings coding safe)
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267 ;; (if (memq 'unknown charsets)
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268 ;; ;; The region contains invalid multibyte characters.
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269 ;; (setq l '(raw-text)))
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270 ;; (while l
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271 ;; (setq coding (car l) l (cdr l))
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272 ;; (if (and (setq safe (coding-system-get coding 'safe-charsets))
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273 ;; (or (eq safe t)
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274 ;; (find-coding-systems-region-subset-p charsets safe)))
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275 ;; ;; We put the higher priority to coding systems included
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276 ;; ;; in CHARSET-PREFERRED-CODINGS, and within them, put the
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277 ;; ;; higher priority to coding systems which support smaller
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278 ;; ;; number of charsets.
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279 ;; (let ((priority
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280 ;; (+ (if (coding-system-get coding 'mime-charset) 4096 0)
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281 ;; (lsh (length (memq coding priorities)) 7)
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282 ;; (if (memq coding charset-preferred-codings) 64 0)
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283 ;; (if (> (coding-system-type coding) 0) 32 0)
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284 ;; (if (consp safe) (- 32 (length safe)) 0))))
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285 ;; (setq codings (cons (cons priority coding) codings)))))
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286 ;; (mapcar 'cdr
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287 ;; (sort codings (function (lambda (x y) (> (car x) (car y))))))
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288 ;; )))
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289
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290 ;; (defun find-multibyte-characters (from to &optional maxcount excludes)
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291 ;; "Find multibyte characters in the region specified by FROM and TO.
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292 ;; If FROM is a string, find multibyte characters in the string.
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293 ;; The return value is an alist of the following format:
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294 ;; ((CHARSET COUNT CHAR ...) ...)
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295 ;; where
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296 ;; CHARSET is a character set,
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297 ;; COUNT is a number of characters,
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298 ;; CHARs are found characters of the character set.
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299 ;; Optional 3rd arg MAXCOUNT limits how many CHARs are put in the above list.
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300 ;; Optional 4th arg EXCLUDE is a list of character sets to be ignored.
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301 ;;
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302 ;; For invalid characters, CHARs are actually strings."
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303 ;; (let ((chars nil)
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304 ;; charset char)
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305 ;; (if (stringp from)
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306 ;; (let ((idx 0))
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307 ;; (while (setq idx (string-match "[^\000-\177]" from idx))
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308 ;; (setq char (aref from idx)
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309 ;; charset (char-charset char))
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310 ;; (if (eq charset 'unknown)
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311 ;; (setq char (match-string 0)))
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312 ;; (if (or (eq charset 'unknown)
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313 ;; (not (or (eq excludes t) (memq charset excludes))))
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314 ;; (let ((slot (assq charset chars)))
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315 ;; (if slot
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316 ;; (if (not (memq char (nthcdr 2 slot)))
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317 ;; (let ((count (nth 1 slot)))
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318 ;; (setcar (cdr slot) (1+ count))
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319 ;; (if (or (not maxcount) (< count maxcount))
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320 ;; (nconc slot (list char)))))
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321 ;; (setq chars (cons (list charset 1 char) chars)))))
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322 ;; (setq idx (1+ idx))))
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323 ;; (save-excursion
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324 ;; (goto-char from)
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325 ;; (while (re-search-forward "[^\000-\177]" to t)
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326 ;; (setq char (preceding-char)
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327 ;; charset (char-charset char))
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328 ;; (if (eq charset 'unknown)
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329 ;; (setq char (match-string 0)))
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330 ;; (if (or (eq charset 'unknown)
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331 ;; (not (or (eq excludes t) (memq charset excludes))))
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332 ;; (let ((slot (assq charset chars)))
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333 ;; (if slot
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334 ;; (if (not (member char (nthcdr 2 slot)))
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335 ;; (let ((count (nth 1 slot)))
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336 ;; (setcar (cdr slot) (1+ count))
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337 ;; (if (or (not maxcount) (< count maxcount))
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338 ;; (nconc slot (list char)))))
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339 ;; (setq chars (cons (list charset 1 char) chars))))))))
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340 ;; (nreverse chars)))
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341
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342 ;; (defvar last-coding-system-specified nil
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343 ;; "Most recent coding system explicitly specified by the user when asked.
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344 ;; This variable is set whenever Emacs asks the user which coding system
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345 ;; to use in order to write a file. If you set it to nil explicitly,
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346 ;; then call `write-region', then afterward this variable will be non-nil
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347 ;; only if the user was explicitly asked and specified a coding system.")
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348
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349 ;; (defun select-safe-coding-system (from to &optional default-coding-system)
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350 ;; "Ask a user to select a safe coding system from candidates.
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351 ;; The candidates of coding systems which can safely encode a text
|
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352 ;; between FROM and TO are shown in a popup window.
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353 ;;
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354 ;; Optional arg DEFAULT-CODING-SYSTEM specifies a coding system to be
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355 ;; checked at first. If omitted, buffer-file-coding-system of the
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356 ;; current buffer is used.
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357 ;;
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358 ;; If the text can be encoded safely by DEFAULT-CODING-SYSTEM, it is
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359 ;; returned without any user interaction.
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360 ;;
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361 ;; Kludgy feature: if FROM is a string, the string is the target text,
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362 ;; and TO is ignored."
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363 ;; (or default-coding-system
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364 ;; (setq default-coding-system buffer-file-coding-system))
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365 ;; (let* ((charsets (if (stringp from) (find-charset-string from)
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366 ;; (find-charset-region from to)))
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367 ;; (safe-coding-systems (find-coding-systems-for-charsets charsets)))
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368 ;; (if (or (not enable-multibyte-characters)
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369 ;; (eq (car safe-coding-systems) 'undecided)
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370 ;; (eq default-coding-system 'no-conversion)
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371 ;; (and default-coding-system
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372 ;; (memq (coding-system-base default-coding-system)
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373 ;; safe-coding-systems)))
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374 ;; default-coding-system
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375 ;;
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376 ;; ;; At first, change each coding system to the corresponding
|
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377 ;; ;; mime-charset name if it is also a coding system.
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378 ;; (let ((l safe-coding-systems)
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379 ;; mime-charset)
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380 ;; (while l
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381 ;; (setq mime-charset (coding-system-get (car l) 'mime-charset))
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382 ;; (if (and mime-charset (coding-system-p mime-charset))
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383 ;; (setcar l mime-charset))
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384 ;; (setq l (cdr l))))
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385 ;;
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386 ;; (let ((non-safe-chars (find-multibyte-characters
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387 ;; from to 3
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388 ;; (and default-coding-system
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389 ;; (coding-system-get default-coding-system
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390 ;; 'safe-charsets))))
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|
391 ;; show-position overlays)
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|
|
392 ;; (save-excursion
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|
|
393 ;; ;; Highlight characters that default-coding-system can't encode.
|
|
|
394 ;; (when (integerp from)
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|
|
395 ;; (goto-char from)
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|
|
396 ;; (let ((found nil))
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|
397 ;; (while (and (not found)
|
|
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398 ;; (re-search-forward "[^\000-\177]" to t))
|
|
|
399 ;; (setq found (assq (char-charset (preceding-char))
|
|
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400 ;; non-safe-chars))))
|
|
|
401 ;; (forward-line -1)
|
|
|
402 ;; (setq show-position (point))
|
|
|
403 ;; (save-excursion
|
|
|
404 ;; (while (and (< (length overlays) 256)
|
|
|
405 ;; (re-search-forward "[^\000-\177]" to t))
|
|
|
406 ;; (let* ((char (preceding-char))
|
|
|
407 ;; (charset (char-charset char)))
|
|
|
408 ;; (when (assq charset non-safe-chars)
|
|
|
409 ;; (setq overlays (cons (make-overlay (1- (point)) (point))
|
|
|
410 ;; overlays))
|
|
|
411 ;; (overlay-put (car overlays) 'face 'highlight))))))
|
|
|
412 ;;
|
|
|
413 ;; ;; At last, ask a user to select a proper coding system.
|
|
|
414 ;; (unwind-protect
|
|
|
415 ;; (save-window-excursion
|
|
|
416 ;; (when show-position
|
|
|
417 ;; ;; At first, be sure to show the current buffer.
|
|
|
418 ;; (set-window-buffer (selected-window) (current-buffer))
|
|
|
419 ;; (set-window-start (selected-window) show-position))
|
|
|
420 ;; ;; Then, show a helpful message.
|
|
|
421 ;; (with-output-to-temp-buffer "*Warning*"
|
|
|
422 ;; (save-excursion
|
|
|
423 ;; (set-buffer standard-output)
|
|
|
424 ;; (insert "The target text contains the following non ASCII character(s):\n")
|
|
|
425 ;; (let ((len (length non-safe-chars))
|
|
|
426 ;; (shown 0))
|
|
|
427 ;; (while (and non-safe-chars (< shown 3))
|
|
|
428 ;; (when (> (length (car non-safe-chars)) 2)
|
|
|
429 ;; (setq shown (1+ shown))
|
|
|
430 ;; (insert (format "%25s: " (car (car non-safe-chars))))
|
|
|
431 ;; (let ((l (nthcdr 2 (car non-safe-chars))))
|
|
|
432 ;; (while l
|
|
|
433 ;; (if (or (stringp (car l)) (char-valid-p (car l)))
|
|
|
434 ;; (insert (car l)))
|
|
|
435 ;; (setq l (cdr l))))
|
|
|
436 ;; (if (> (nth 1 (car non-safe-chars)) 3)
|
|
|
437 ;; (insert "..."))
|
|
|
438 ;; (insert "\n"))
|
|
|
439 ;; (setq non-safe-chars (cdr non-safe-chars)))
|
|
|
440 ;; (if (< shown len)
|
|
|
441 ;; (insert (format "%27s\n" "..."))))
|
|
|
442 ;; (insert (format "\
|
|
|
443 ;; These can't be encoded safely by the coding system %s.
|
|
|
444 ;;
|
|
|
445 ;; Please select one from the following safe coding systems:\n"
|
|
|
446 ;; default-coding-system))
|
|
|
447 ;; (let ((pos (point))
|
|
|
448 ;; (fill-prefix " "))
|
|
|
449 ;; (mapcar (function (lambda (x) (princ " ") (princ x)))
|
|
|
450 ;; safe-coding-systems)
|
|
|
451 ;; (fill-region-as-paragraph pos (point)))))
|
|
|
452 ;;
|
|
|
453 ;; ;; Read a coding system.
|
|
|
454 ;; (let* ((safe-names (mapcar (lambda (x) (list (symbol-name x)))
|
|
|
455 ;; safe-coding-systems))
|
|
|
456 ;; (name (completing-read
|
|
|
457 ;; (format "Select coding system (default %s): "
|
|
|
458 ;; (car safe-coding-systems))
|
|
|
459 ;; safe-names nil t nil nil
|
|
|
460 ;; (car (car safe-names)))))
|
|
|
461 ;; (setq last-coding-system-specified (intern name))
|
|
|
462 ;; (if (integerp (coding-system-eol-type default-coding-system))
|
|
|
463 ;; (setq last-coding-system-specified
|
|
|
464 ;; (coding-system-change-eol-conversion
|
|
|
465 ;; last-coding-system-specified
|
|
|
466 ;; (coding-system-eol-type default-coding-system))))
|
|
|
467 ;; last-coding-system-specified))
|
|
|
468 ;; (kill-buffer "*Warning*")
|
|
|
469 ;; (while overlays
|
|
|
470 ;; (delete-overlay (car overlays))
|
|
|
471 ;; (setq overlays (cdr overlays)))))))))
|
|
|
472
|
|
|
473 ;; (setq select-safe-coding-system-function 'select-safe-coding-system)
|
|
|
474
|
|
|
475 ;; (defun select-message-coding-system ()
|
|
|
476 ;; "Return a coding system to encode the outgoing message of the current buffer.
|
|
|
477 ;; It at first tries the first coding system found in these variables
|
|
|
478 ;; in this order:
|
|
|
479 ;; (1) local value of `buffer-file-coding-system'
|
|
|
480 ;; (2) value of `sendmail-coding-system'
|
|
|
481 ;; (3) value of `default-buffer-file-coding-system'
|
|
|
482 ;; (4) value of `default-sendmail-coding-system'
|
|
|
483 ;; If the found coding system can't encode the current buffer,
|
|
|
484 ;; or none of them are bound to a coding system,
|
|
|
485 ;; it asks the user to select a proper coding system."
|
|
|
486 ;; (let ((coding (or (and (local-variable-p 'buffer-file-coding-system)
|
|
|
487 ;; buffer-file-coding-system)
|
|
|
488 ;; sendmail-coding-system
|
|
|
489 ;; default-buffer-file-coding-system
|
|
|
490 ;; default-sendmail-coding-system)))
|
|
|
491 ;; (if (eq coding 'no-conversion)
|
|
|
492 ;; ;; We should never use no-conversion for outgoing mails.
|
|
|
493 ;; (setq coding nil))
|
|
|
494 ;; (if (fboundp select-safe-coding-system-function)
|
|
|
495 ;; (funcall select-safe-coding-system-function
|
|
|
496 ;; (point-min) (point-max) coding)
|
|
|
497 ;; coding)))
|
|
|
498
|
|
|
499 ;;; Language support stuff.
|
|
|
500
|
|
|
501 (defvar language-info-alist nil
|
|
|
502 "Alist of language environment definitions.
|
|
|
503 Each element looks like:
|
|
|
504 (LANGUAGE-NAME . ((KEY . INFO) ...))
|
|
|
505 where LANGUAGE-NAME is a string, the name of the language environment,
|
|
|
506 KEY is a symbol denoting the kind of information, and
|
|
|
507 INFO is the data associated with KEY.
|
|
|
508 Meaningful values for KEY include
|
|
|
509
|
|
|
510 documentation value is documentation of what this language environment
|
|
|
511 is meant for, and how to use it.
|
|
|
512 charset value is a list of the character sets used by this
|
|
|
513 language environment.
|
|
|
514 sample-text value is one line of text,
|
|
|
515 written using those character sets,
|
|
|
516 appropriate for this language environment.
|
|
|
517 setup-function value is a function to call to switch to this
|
|
|
518 language environment.
|
|
|
519 exit-function value is a function to call to leave this
|
|
|
520 language environment.
|
|
|
521 coding-system value is a list of coding systems that are good
|
|
|
522 for saving text written in this language environment.
|
|
|
523 This list serves as suggestions to the user;
|
|
|
524 in effect, as a kind of documentation.
|
|
|
525 coding-priority value is a list of coding systems for this language
|
|
|
526 environment, in order of decreasing priority.
|
|
|
527 This is used to set up the coding system priority
|
|
|
528 list when you switch to this language environment.
|
|
|
529 input-method value is a default input method for this language
|
|
|
530 environment.
|
|
|
531 features value is a list of features requested in this
|
|
|
532 language environment.
|
|
|
533 tutorial value is a tutorial file name written in the language.")
|
|
|
534
|
|
|
535 (defun get-language-info (lang-env key)
|
|
|
536 "Return information listed under KEY for language environment LANG-ENV.
|
|
|
537 KEY is a symbol denoting the kind of information.
|
|
|
538 For a list of useful values for KEY and their meanings,
|
|
|
539 see `language-info-alist'."
|
|
|
540 (if (symbolp lang-env)
|
|
|
541 (setq lang-env (symbol-name lang-env)))
|
|
|
542 (let ((lang-slot (assoc-ignore-case lang-env language-info-alist)))
|
|
|
543 (if lang-slot
|
|
|
544 (cdr (assq key (cdr lang-slot))))))
|
|
|
545
|
|
|
546 (defun set-language-info (lang-env key info)
|
|
|
547 "Modify part of the definition of language environment LANG-ENV.
|
|
|
548 Specifically, this stores the information INFO under KEY
|
|
|
549 in the definition of this language environment.
|
|
|
550 KEY is a symbol denoting the kind of information.
|
|
|
551 INFO is the value for that information.
|
|
|
552
|
|
|
553 For a list of useful values for KEY and their meanings,
|
|
|
554 see `language-info-alist'."
|
|
|
555 (if (symbolp lang-env)
|
|
|
556 (setq lang-env (symbol-name lang-env)))
|
|
|
557 (let (lang-slot key-slot)
|
|
|
558 (setq lang-slot (assoc lang-env language-info-alist))
|
|
|
559 (if (null lang-slot) ; If no slot for the language, add it.
|
|
|
560 (setq lang-slot (list lang-env)
|
|
|
561 language-info-alist (cons lang-slot language-info-alist)))
|
|
|
562 (setq key-slot (assq key lang-slot))
|
|
|
563 (if (null key-slot) ; If no slot for the key, add it.
|
|
|
564 (progn
|
|
|
565 (setq key-slot (list key))
|
|
|
566 (setcdr lang-slot (cons key-slot (cdr lang-slot)))))
|
|
|
567 (setcdr key-slot info)))
|
|
|
568
|
|
|
569 (defun set-language-info-alist (lang-env alist &optional parents)
|
|
|
570 "Store ALIST as the definition of language environment LANG-ENV.
|
|
|
571 ALIST is an alist of KEY and INFO values. See the documentation of
|
|
|
572 `set-language-info' for the meanings of KEY and INFO."
|
|
|
573 (if (symbolp lang-env)
|
|
|
574 (setq lang-env (symbol-name lang-env)))
|
|
|
575 (let (; (describe-map describe-language-environment-map)
|
|
|
576 ; (setup-map setup-language-environment-map)
|
|
|
577 )
|
|
|
578 ;; (if parents
|
|
|
579 ;; (let ((l parents)
|
|
|
580 ;; map parent-symbol parent)
|
|
|
581 ;; (while l
|
|
|
582 ;; (if (symbolp (setq parent-symbol (car l)))
|
|
|
583 ;; (setq parent (symbol-name parent))
|
|
|
584 ;; (setq parent parent-symbol parent-symbol (intern parent)))
|
|
|
585 ;; (setq map (lookup-key describe-map (vector parent-symbol)))
|
|
|
586 ;; (if (not map)
|
|
|
587 ;; (progn
|
|
|
588 ;; (setq map (intern (format "describe-%s-environment-map"
|
|
|
589 ;; (downcase parent))))
|
|
|
590 ;; (define-prefix-command map)
|
|
|
591 ;; (define-key-after describe-map (vector parent-symbol)
|
|
|
592 ;; (cons parent map) t)))
|
|
|
593 ;; (setq describe-map (symbol-value map))
|
|
|
594 ;; (setq map (lookup-key setup-map (vector parent-symbol)))
|
|
|
595 ;; (if (not map)
|
|
|
596 ;; (progn
|
|
|
597 ;; (setq map (intern (format "setup-%s-environment-map"
|
|
|
598 ;; (downcase parent))))
|
|
|
599 ;; (define-prefix-command map)
|
|
|
600 ;; (define-key-after setup-map (vector parent-symbol)
|
|
|
601 ;; (cons parent map) t)))
|
|
|
602 ;; (setq setup-map (symbol-value map))
|
|
|
603 ;; (setq l (cdr l)))))
|
|
|
604
|
|
|
605 ;; Set up menu items for this language env.
|
|
|
606 (let ((doc (assq 'documentation alist)))
|
|
|
607 (when doc
|
|
|
608 ;; (define-key-after describe-map (vector (intern lang-env))
|
|
|
609 ;; (cons lang-env 'describe-specified-language-support) t)
|
|
|
610 (when (featurep 'menubar)
|
|
|
611 (eval-after-load
|
|
|
612 "menubar-items.elc"
|
|
|
613 `(add-menu-button
|
|
442
|
614 '("%_Edit" "%_Multilingual (\"Mule\")"
|
|
|
615 "%_Describe Language Support")
|
|
428
|
616 (vector ,lang-env
|
|
|
617 '(describe-language-environment ,lang-env)
|
|
|
618 t))))
|
|
|
619 ))
|
|
|
620 ;; (define-key-after setup-map (vector (intern lang-env))
|
|
|
621 ;; (cons lang-env 'setup-specified-language-environment) t)
|
|
|
622 (when (featurep 'menubar)
|
|
|
623 (eval-after-load
|
|
|
624 "menubar-items.elc"
|
|
|
625 `(add-menu-button
|
|
442
|
626 '("%_Edit" "%_Multilingual (\"Mule\")"
|
|
|
627 "%_Set Language Environment")
|
|
428
|
628 (vector ,lang-env
|
|
|
629 '(set-language-environment ,lang-env)
|
|
|
630 t))))
|
|
442
|
631
|
|
428
|
632 (while alist
|
|
|
633 (set-language-info lang-env (car (car alist)) (cdr (car alist)))
|
|
|
634 (setq alist (cdr alist)))))
|
|
|
635
|
|
|
636 (defun read-language-name (key prompt &optional default)
|
|
|
637 "Read a language environment name which has information for KEY.
|
|
|
638 If KEY is nil, read any language environment.
|
|
|
639 Prompt with PROMPT. DEFAULT is the default choice of language environment.
|
|
|
640 This returns a language environment name as a string."
|
|
|
641 (let* ((completion-ignore-case t)
|
|
|
642 (name (completing-read prompt
|
|
|
643 language-info-alist
|
|
|
644 (and key
|
|
|
645 (function (lambda (elm) (assq key elm))))
|
|
|
646 t nil nil default)))
|
|
|
647 (if (and (> (length name) 0)
|
|
|
648 (or (not key)
|
|
|
649 (get-language-info name key)))
|
|
|
650 name)))
|
|
|
651
|
|
|
652 ;;; Multilingual input methods.
|
|
|
653
|
|
|
654 (defconst leim-list-file-name "leim-list.el"
|
|
|
655 "Name of LEIM list file.
|
|
|
656 This file contains a list of libraries of Emacs input methods (LEIM)
|
|
|
657 in the format of Lisp expression for registering each input method.
|
|
|
658 Emacs loads this file at startup time.")
|
|
|
659
|
|
|
660 (defvar leim-list-header (format
|
|
|
661 ";;; %s -- list of LEIM (Library of Emacs Input Method)
|
|
|
662 ;;
|
|
|
663 ;; This file contains a list of LEIM (Library of Emacs Input Method)
|
|
|
664 ;; in the same directory as this file. Loading this file registers
|
|
|
665 ;; the whole input methods in Emacs.
|
|
|
666 ;;
|
|
|
667 ;; Each entry has the form:
|
|
|
668 ;; (register-input-method
|
|
|
669 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC
|
|
|
670 ;; TITLE DESCRIPTION
|
|
|
671 ;; ARG ...)
|
|
|
672 ;; See the function `register-input-method' for the meanings of arguments.
|
|
|
673 ;;
|
|
|
674 ;; If this directory is included in load-path, Emacs automatically
|
|
|
675 ;; loads this file at startup time.
|
|
|
676
|
|
|
677 "
|
|
|
678 leim-list-file-name)
|
|
|
679 "Header to be inserted in LEIM list file.")
|
|
|
680
|
|
|
681 (defvar leim-list-entry-regexp "^(register-input-method"
|
|
|
682 "Regexp matching head of each entry in LEIM list file.
|
|
|
683 See also the variable `leim-list-header'")
|
|
|
684
|
|
|
685 (defvar update-leim-list-functions
|
|
|
686 '(quail-update-leim-list-file)
|
|
|
687 "List of functions to call to update LEIM list file.
|
|
|
688 Each function is called with one arg, LEIM directory name.")
|
|
|
689
|
|
|
690 (defun update-leim-list-file (&rest dirs)
|
|
|
691 "Update LEIM list file in directories DIRS."
|
|
|
692 (let ((functions update-leim-list-functions))
|
|
|
693 (while functions
|
|
|
694 (apply (car functions) dirs)
|
|
|
695 (setq functions (cdr functions)))))
|
|
|
696
|
|
|
697 (defvar current-input-method nil
|
|
|
698 "The current input method for multilingual text.
|
|
|
699 If nil, that means no input method is activated now.")
|
|
|
700 (make-variable-buffer-local 'current-input-method)
|
|
|
701 (put 'current-input-method 'permanent-local t)
|
|
|
702
|
|
|
703 (defvar current-input-method-title nil
|
|
|
704 "Title string of the current input method shown in mode line.")
|
|
|
705 (make-variable-buffer-local 'current-input-method-title)
|
|
|
706 (put 'current-input-method-title 'permanent-local t)
|
|
|
707
|
|
|
708 (defcustom default-input-method nil
|
|
|
709 "*Default input method for multilingual text (a string).
|
|
|
710 This is the input method activated automatically by the command
|
|
|
711 `toggle-input-method' (\\[toggle-input-method])."
|
|
|
712 :group 'mule
|
|
|
713 :type '(choice (const nil) string))
|
|
|
714
|
|
|
715 (put 'input-method-function 'permanent-local t)
|
|
|
716
|
|
|
717 (defvar input-method-history nil
|
|
|
718 "History list for some commands that read input methods.")
|
|
|
719 (make-variable-buffer-local 'input-method-history)
|
|
|
720 (put 'input-method-history 'permanent-local t)
|
|
|
721
|
|
|
722 (defvar inactivate-current-input-method-function nil
|
|
|
723 "Function to call for inactivating the current input method.
|
|
|
724 Every input method should set this to an appropriate value when activated.
|
|
|
725 This function is called with no argument.
|
|
|
726
|
|
|
727 This function should never change the value of `current-input-method'.
|
|
|
728 It is set to nil by the function `inactivate-input-method'.")
|
|
|
729 (make-variable-buffer-local 'inactivate-current-input-method-function)
|
|
|
730 (put 'inactivate-current-input-method-function 'permanent-local t)
|
|
|
731
|
|
|
732 (defvar describe-current-input-method-function nil
|
|
|
733 "Function to call for describing the current input method.
|
|
|
734 This function is called with no argument.")
|
|
|
735 (make-variable-buffer-local 'describe-current-input-method-function)
|
|
|
736 (put 'describe-current-input-method-function 'permanent-local t)
|
|
|
737
|
|
|
738 (defvar input-method-alist nil
|
|
|
739 "Alist of input method names vs how to use them.
|
|
|
740 Each element has the form:
|
|
|
741 (INPUT-METHOD LANGUAGE-ENV ACTIVATE-FUNC TITLE DESCRIPTION ARGS...)
|
|
|
742 See the function `register-input-method' for the meanings of the elements.")
|
|
|
743
|
|
|
744 (defun register-input-method (input-method lang-env &rest args)
|
|
|
745 "Register INPUT-METHOD as an input method for language environment ENV.
|
|
|
746 INPUT-METHOD and LANG-ENV are symbols or strings.
|
|
|
747
|
|
|
748 The remaining arguments are:
|
|
|
749 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARGS...
|
|
|
750 ACTIVATE-FUNC is a function to call to activate this method.
|
|
|
751 TITLE is a string to show in the mode line when this method is active.
|
|
|
752 DESCRIPTION is a string describing this method and what it is good for.
|
|
|
753 The ARGS, if any, are passed as arguments to ACTIVATE-FUNC.
|
|
|
754 All told, the arguments to ACTIVATE-FUNC are INPUT-METHOD and the ARGS.
|
|
|
755
|
|
|
756 This function is mainly used in the file \"leim-list.el\" which is
|
|
|
757 created at building time of emacs, registering all quail input methods
|
|
|
758 contained in the emacs distribution.
|
|
|
759
|
|
|
760 In case you want to register a new quail input method by yourself, be
|
|
|
761 careful to use the same input method title as given in the third
|
|
|
762 parameter of `quail-define-package' (if the values are different, the
|
|
|
763 string specified in this function takes precedence).
|
|
|
764
|
|
|
765 The commands `describe-input-method' and `list-input-methods' need
|
|
|
766 this duplicated values to show some information about input methods
|
|
|
767 without loading the affected quail packages."
|
|
|
768 (if (symbolp lang-env)
|
|
|
769 (setq lang-env (symbol-name lang-env)))
|
|
|
770 (if (symbolp input-method)
|
|
|
771 (setq input-method (symbol-name input-method)))
|
|
|
772 (let ((info (cons lang-env args))
|
|
|
773 (slot (assoc input-method input-method-alist)))
|
|
|
774 (if slot
|
|
|
775 (setcdr slot info)
|
|
|
776 (setq slot (cons input-method info))
|
|
|
777 (setq input-method-alist (cons slot input-method-alist)))))
|
|
|
778
|
|
|
779 (defun read-input-method-name (prompt &optional default inhibit-null)
|
|
|
780 "Read a name of input method from a minibuffer prompting with PROMPT.
|
|
|
781 If DEFAULT is non-nil, use that as the default,
|
|
|
782 and substitute it into PROMPT at the first `%s'.
|
|
|
783 If INHIBIT-NULL is non-nil, null input signals an error.
|
|
|
784
|
|
|
785 The return value is a string."
|
|
|
786 (if default
|
|
|
787 (setq prompt (format prompt default)))
|
|
|
788 (let* ((completion-ignore-case t)
|
|
|
789 ;; This binding is necessary because input-method-history is
|
|
|
790 ;; buffer local.
|
|
|
791 (input-method (completing-read prompt input-method-alist
|
|
|
792 nil t nil 'input-method-history
|
|
|
793 default)))
|
|
|
794 (if (and input-method (symbolp input-method))
|
|
|
795 (setq input-method (symbol-name input-method)))
|
|
|
796 (if (> (length input-method) 0)
|
|
|
797 input-method
|
|
|
798 (if inhibit-null
|
|
|
799 (error "No valid input method is specified")))))
|
|
|
800
|
|
|
801 (defun activate-input-method (input-method)
|
|
|
802 "Switch to input method INPUT-METHOD for the current buffer.
|
|
|
803 If some other input method is already active, turn it off first.
|
|
|
804 If INPUT-METHOD is nil, deactivate any current input method."
|
|
|
805 (if (and input-method (symbolp input-method))
|
|
|
806 (setq input-method (symbol-name input-method)))
|
|
|
807 (if (and current-input-method
|
|
|
808 (not (string= current-input-method input-method)))
|
|
|
809 (inactivate-input-method))
|
|
|
810 (unless (or current-input-method (null input-method))
|
|
|
811 (let ((slot (assoc input-method input-method-alist)))
|
|
|
812 (if (null slot)
|
|
|
813 (error "Can't activate input method `%s'" input-method))
|
|
|
814 (let ((func (nth 2 slot)))
|
|
|
815 (if (functionp func)
|
|
|
816 (apply (nth 2 slot) input-method (nthcdr 5 slot))
|
|
|
817 (if (and (consp func) (symbolp (car func)) (symbolp (cdr func)))
|
|
|
818 (progn
|
|
|
819 (require (cdr func))
|
|
|
820 (apply (car func) input-method (nthcdr 5 slot)))
|
|
|
821 (error "Can't activate input method `%s'" input-method))))
|
|
|
822 (setq current-input-method input-method)
|
|
|
823 (setq current-input-method-title (nth 3 slot))
|
|
|
824 (unwind-protect
|
|
|
825 (run-hooks 'input-method-activate-hook)
|
|
|
826 (force-mode-line-update)))))
|
|
|
827
|
|
|
828 (defun inactivate-input-method ()
|
|
|
829 "Turn off the current input method."
|
|
|
830 (when current-input-method
|
|
|
831 (if input-method-history
|
|
|
832 (unless (string= current-input-method (car input-method-history))
|
|
|
833 (setq input-method-history
|
|
|
834 (cons current-input-method
|
|
|
835 (delete current-input-method input-method-history))))
|
|
|
836 (setq input-method-history (list current-input-method)))
|
|
|
837 (unwind-protect
|
|
|
838 (funcall inactivate-current-input-method-function)
|
|
|
839 (unwind-protect
|
|
|
840 (run-hooks 'input-method-inactivate-hook)
|
|
|
841 (setq current-input-method nil
|
|
|
842 current-input-method-title nil)
|
|
|
843 (force-mode-line-update)))))
|
|
|
844
|
|
|
845 (defun set-input-method (input-method)
|
|
|
846 "Select and activate input method INPUT-METHOD for the current buffer.
|
|
|
847 This also sets the default input method to the one you specify."
|
|
|
848 (interactive
|
|
|
849 (let* ((default (or (car input-method-history) default-input-method)))
|
|
|
850 (list (read-input-method-name
|
|
|
851 (if default "Select input method (default %s): " "Select input method: ")
|
|
|
852 default t))))
|
|
|
853 (activate-input-method input-method)
|
|
|
854 (setq default-input-method input-method))
|
|
|
855
|
|
|
856 (defun toggle-input-method (&optional arg)
|
|
|
857 "Turn on or off a multilingual text input method for the current buffer.
|
|
|
858
|
|
|
859 With no prefix argument, if an input method is currently activated,
|
|
|
860 turn it off. Otherwise, activate an input method -- the one most
|
|
|
861 recently used, or the one specified in `default-input-method', or
|
|
|
862 the one read from the minibuffer.
|
|
|
863
|
|
|
864 With a prefix argument, read an input method from the minibuffer and
|
|
|
865 turn it on.
|
|
|
866
|
|
|
867 The default is to use the most recent input method specified
|
|
|
868 \(not including the currently active input method, if any)."
|
|
|
869 (interactive "P")
|
|
|
870 (if (and current-input-method (not arg))
|
|
|
871 (inactivate-input-method)
|
|
|
872 (let ((default (or (car input-method-history) default-input-method)))
|
|
|
873 (if (and arg default (equal current-input-method default)
|
|
|
874 (> (length input-method-history) 1))
|
|
|
875 (setq default (nth 1 input-method-history)))
|
|
|
876 (activate-input-method
|
|
|
877 (if (or arg (not default))
|
|
|
878 (progn
|
|
|
879 (read-input-method-name
|
|
|
880 (if default "Input method (default %s): " "Input method: " )
|
|
|
881 default t))
|
|
|
882 default))
|
|
|
883 (or default-input-method
|
|
|
884 (setq default-input-method current-input-method)))))
|
|
|
885
|
|
|
886 (defun describe-input-method (input-method)
|
|
|
887 "Describe input method INPUT-METHOD."
|
|
|
888 (interactive
|
|
|
889 (list (read-input-method-name
|
|
|
890 "Describe input method (default, current choice): ")))
|
|
|
891 (if (and input-method (symbolp input-method))
|
|
|
892 (setq input-method (symbol-name input-method)))
|
|
|
893 (if (null input-method)
|
|
|
894 (describe-current-input-method)
|
|
|
895 (with-output-to-temp-buffer "*Help*"
|
|
|
896 (let ((elt (assoc input-method input-method-alist)))
|
|
|
897 (princ (format "Input method: %s (`%s' in mode line) for %s\n %s\n"
|
|
|
898 input-method (nth 3 elt) (nth 1 elt) (nth 4 elt)))))))
|
|
|
899
|
|
|
900 (defun describe-current-input-method ()
|
|
|
901 "Describe the input method currently in use."
|
|
|
902 (if current-input-method
|
|
|
903 (if (and (symbolp describe-current-input-method-function)
|
|
|
904 (fboundp describe-current-input-method-function))
|
|
|
905 (funcall describe-current-input-method-function)
|
|
|
906 (message "No way to describe the current input method `%s'"
|
|
|
907 current-input-method)
|
|
|
908 (ding))
|
|
|
909 (error "No input method is activated now")))
|
|
|
910
|
|
|
911 (defun read-multilingual-string (prompt &optional initial-input input-method)
|
|
|
912 "Read a multilingual string from minibuffer, prompting with string PROMPT.
|
|
|
913 The input method selected last time is activated in minibuffer.
|
|
|
914 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer
|
|
|
915 initially.
|
|
|
916 Optional 3rd argument INPUT-METHOD specifies the input method
|
|
|
917 to be activated instead of the one selected last time. It is a symbol
|
|
|
918 or a string."
|
|
|
919 (setq input-method
|
|
|
920 (or input-method
|
|
|
921 current-input-method
|
|
|
922 default-input-method
|
|
|
923 (read-input-method-name "Input method: " nil t)))
|
|
|
924 (if (and input-method (symbolp input-method))
|
|
|
925 (setq input-method (symbol-name input-method)))
|
|
|
926 (let ((prev-input-method current-input-method))
|
|
|
927 (unwind-protect
|
|
|
928 (progn
|
|
|
929 (activate-input-method input-method)
|
|
|
930 ;; FSF Emacs
|
|
|
931 ;; (read-string prompt initial-input nil nil t)
|
|
|
932 (read-string prompt initial-input nil))
|
|
|
933 (activate-input-method prev-input-method))))
|
|
|
934
|
|
|
935 ;; Variables to control behavior of input methods. All input methods
|
|
|
936 ;; should react to these variables.
|
|
|
937
|
|
|
938 (defcustom input-method-verbose-flag 'default
|
|
|
939 "*A flag to control extra guidance given by input methods.
|
|
|
940 The value should be nil, t, `complex-only', or `default'.
|
|
|
941
|
|
|
942 The extra guidance is done by showing list of available keys in echo
|
|
|
943 area. When you use the input method in the minibuffer, the guidance
|
|
|
944 is shown at the bottom short window (split from the existing window).
|
|
|
945
|
|
|
946 If the value is t, extra guidance is always given, if the value is
|
|
|
947 nil, extra guidance is always suppressed.
|
|
|
948
|
|
|
949 If the value is `complex-only', only complex input methods such as
|
|
|
950 `chinese-py' and `japanese' give extra guidance.
|
|
|
951
|
|
|
952 If the value is `default', complex input methods always give extra
|
|
|
953 guidance, but simple input methods give it only when you are not in
|
|
|
954 the minibuffer.
|
|
|
955
|
|
|
956 See also the variable `input-method-highlight-flag'."
|
|
|
957 :type '(choice (const t) (const nil) (const complex-only) (const default))
|
|
|
958 :group 'mule)
|
|
|
959
|
|
|
960 (defcustom input-method-highlight-flag t
|
|
|
961 "*If this flag is non-nil, input methods highlight partially-entered text.
|
|
|
962 For instance, while you are in the middle of a Quail input method sequence,
|
|
|
963 the text inserted so far is temporarily underlined.
|
|
|
964 The underlining goes away when you finish or abort the input method sequence.
|
|
|
965 See also the variable `input-method-verbose-flag'."
|
|
|
966 :type 'boolean
|
|
|
967 :group 'mule)
|
|
|
968
|
|
|
969 (defvar input-method-activate-hook nil
|
|
|
970 "Normal hook run just after an input method is activated.
|
|
|
971
|
|
|
972 The variable `current-input-method' keeps the input method name
|
|
|
973 just activated.")
|
|
|
974
|
|
|
975 (defvar input-method-inactivate-hook nil
|
|
|
976 "Normal hook run just after an input method is inactivated.
|
|
|
977
|
|
|
978 The variable `current-input-method' still keeps the input method name
|
|
|
979 just inactivated.")
|
|
|
980
|
|
|
981 (defvar input-method-after-insert-chunk-hook nil
|
|
|
982 "Normal hook run just after an input method insert some chunk of text.")
|
|
|
983
|
|
|
984 (defvar input-method-exit-on-first-char nil
|
|
|
985 "This flag controls a timing when an input method returns.
|
|
|
986 Usually, the input method does not return while there's a possibility
|
|
|
987 that it may find a different translation if a user types another key.
|
|
|
988 But, it this flag is non-nil, the input method returns as soon as
|
|
|
989 the current key sequence gets long enough to have some valid translation.")
|
|
|
990
|
|
|
991 (defvar input-method-use-echo-area nil
|
|
|
992 "This flag controls how an input method shows an intermediate key sequence.
|
|
|
993 Usually, the input method inserts the intermediate key sequence,
|
|
|
994 or candidate translations corresponding to the sequence,
|
|
|
995 at point in the current buffer.
|
|
|
996 But, if this flag is non-nil, it displays them in echo area instead.")
|
|
|
997
|
|
|
998 (defvar input-method-exit-on-invalid-key nil
|
|
442
|
999 "This flag controls the behavior of an input method on invalid key input.
|
|
428
|
1000 Usually, when a user types a key which doesn't start any character
|
|
|
1001 handled by the input method, the key is handled by turning off the
|
|
|
1002 input method temporarily. After that key, the input method is re-enabled.
|
|
|
1003 But, if this flag is non-nil, the input method is never back on.")
|
|
|
1004
|
|
|
1005
|
|
|
1006 (defvar set-language-environment-hook nil
|
|
|
1007 "Normal hook run after some language environment is set.
|
|
|
1008
|
|
|
1009 When you set some hook function here, that effect usually should not
|
|
|
1010 be inherited to another language environment. So, you had better set
|
|
|
1011 another function in `exit-language-environment-hook' (which see) to
|
|
|
1012 cancel the effect.")
|
|
|
1013
|
|
|
1014 (defvar exit-language-environment-hook nil
|
|
|
1015 "Normal hook run after exiting from some language environment.
|
|
|
1016 When this hook is run, the variable `current-language-environment'
|
|
|
1017 is still bound to the language environment being exited.
|
|
|
1018
|
|
|
1019 This hook is mainly used for canceling the effect of
|
|
|
1020 `set-language-environment-hook' (which-see).")
|
|
|
1021
|
|
|
1022 (put 'setup-specified-language-environment 'apropos-inhibit t)
|
|
|
1023
|
|
|
1024 (defun setup-specified-language-environment ()
|
|
|
1025 "Switch to a specified language environment."
|
|
|
1026 (interactive)
|
|
|
1027 (let (language-name)
|
|
|
1028 (if (and (symbolp last-command-event)
|
|
|
1029 (or (not (eq last-command-event 'Default))
|
|
|
1030 (setq last-command-event 'English))
|
|
|
1031 (setq language-name (symbol-name last-command-event)))
|
|
|
1032 (set-language-environment language-name)
|
|
|
1033 (error "Bogus calling sequence"))))
|
|
|
1034
|
|
|
1035 (defcustom current-language-environment "English"
|
|
|
1036 "The last language environment specified with `set-language-environment'.
|
|
|
1037 This variable should be set only with \\[customize], which is equivalent
|
|
|
1038 to using the function `set-language-environment'."
|
|
|
1039 :link '(custom-manual "(emacs)Language Environments")
|
|
|
1040 :set (lambda (symbol value) (set-language-environment value))
|
|
|
1041 :get (lambda (x)
|
|
|
1042 (or (car-safe (assoc-ignore-case
|
|
|
1043 (if (symbolp current-language-environment)
|
|
|
1044 (symbol-name current-language-environment)
|
|
|
1045 current-language-environment)
|
|
|
1046 language-info-alist))
|
|
|
1047 "English"))
|
|
|
1048 :type (cons 'choice (mapcar (lambda (lang)
|
|
|
1049 (list 'const (car lang)))
|
|
|
1050 language-info-alist))
|
|
|
1051 :initialize 'custom-initialize-default
|
|
|
1052 :group 'mule
|
|
|
1053 :type 'string)
|
|
|
1054
|
|
|
1055 (defun reset-language-environment ()
|
|
|
1056 "Reset multilingual environment of Emacs to the default status.
|
|
|
1057
|
|
|
1058 The default status is as follows:
|
|
|
1059
|
|
|
1060 The default value of buffer-file-coding-system is nil.
|
|
|
1061 The default coding system for process I/O is nil.
|
|
|
1062 The default value for the command `set-terminal-coding-system' is nil.
|
|
|
1063 The default value for the command `set-keyboard-coding-system' is nil.
|
|
|
1064
|
|
|
1065 The order of priorities of coding categories and the coding system
|
|
|
1066 bound to each category are as follows
|
|
|
1067 coding category coding system
|
|
|
1068 --------------------------------------------------
|
|
|
1069 iso-8-2 iso-8859-1
|
|
|
1070 iso-8-1 iso-8859-1
|
|
|
1071 iso-7 iso-2022-7bit
|
|
|
1072 iso-lock-shift iso-2022-lock
|
|
|
1073 iso-8-designate iso-2022-8bit-ss2
|
|
|
1074 no-conversion raw-text
|
|
|
1075 shift-jis shift_jis
|
|
|
1076 big5 big5
|
|
|
1077 ucs-4 ----
|
|
|
1078 utf-8 ----
|
|
|
1079 "
|
|
|
1080 (interactive)
|
|
|
1081 ;; This function formerly set default-enable-multibyte-characters to t,
|
|
|
1082 ;; but that is incorrect. It should not alter the unibyte/multibyte choice.
|
|
|
1083
|
|
|
1084 (set-coding-category-system 'iso-7 'iso-2022-7bit)
|
|
|
1085 (set-coding-category-system 'iso-8-1 'iso-8859-1)
|
|
|
1086 (set-coding-category-system 'iso-8-2 'iso-8859-1)
|
|
|
1087 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
|
|
|
1088 (set-coding-category-system 'iso-8-designate 'iso-2022-8bit-ss2)
|
|
|
1089 (set-coding-category-system 'no-conversion 'raw-text)
|
|
|
1090 (set-coding-category-system 'shift-jis 'shift_jis)
|
|
|
1091 (set-coding-category-system 'big5 'big5)
|
|
|
1092 (cond ((eq (coding-system-type (coding-category-system 'utf-8)) 'utf-8)
|
|
|
1093 (set-coding-category-system 'ucs-4 'iso-10646-ucs-4)
|
|
|
1094 (set-coding-category-system 'utf-8 'utf-8)
|
|
|
1095 (set-coding-priority-list
|
|
|
1096 '(iso-8-1
|
|
|
1097 iso-8-2
|
|
|
1098 iso-7
|
|
|
1099 iso-lock-shift
|
|
|
1100 iso-8-designate
|
|
|
1101 utf-8
|
|
|
1102 ucs-4
|
|
|
1103 no-conversion
|
|
|
1104 shift-jis
|
|
|
1105 big5))
|
|
|
1106 )
|
|
|
1107 (t
|
|
|
1108 (set-coding-priority-list
|
|
|
1109 '(iso-8-1
|
|
|
1110 iso-8-2
|
|
|
1111 iso-7
|
|
|
1112 iso-lock-shift
|
|
|
1113 iso-8-designate
|
|
|
1114 no-conversion
|
|
|
1115 shift-jis
|
|
|
1116 big5))
|
|
|
1117 ))
|
|
|
1118
|
|
|
1119 ;; (update-coding-systems-internal)
|
|
|
1120
|
|
|
1121 (set-default-coding-systems nil)
|
|
|
1122 ;; Don't alter the terminal and keyboard coding systems here.
|
|
|
1123 ;; The terminal still supports the same coding system
|
|
|
1124 ;; that it supported a minute ago.
|
|
|
1125 ;;; (set-terminal-coding-system-internal nil)
|
|
|
1126 ;;; (set-keyboard-coding-system-internal nil)
|
|
|
1127
|
|
|
1128 ;; (setq nonascii-translation-table nil
|
|
|
1129 ;; nonascii-insert-offset 0)
|
|
|
1130 )
|
|
|
1131
|
|
|
1132 (defun set-language-environment (language-name)
|
|
|
1133 "Set up multi-lingual environment for using LANGUAGE-NAME.
|
|
|
1134 This sets the coding system priority and the default input method
|
|
|
1135 and sometimes other things. LANGUAGE-NAME should be a string
|
|
|
1136 which is the name of a language environment. For example, \"Latin-1\"
|
|
|
1137 specifies the character set for the major languages of Western Europe."
|
|
|
1138 (interactive (list (read-language-name
|
|
|
1139 nil
|
|
|
1140 "Set language environment (default, English): ")))
|
|
|
1141 (if language-name
|
|
|
1142 (if (symbolp language-name)
|
|
|
1143 (setq language-name (symbol-name language-name)))
|
|
|
1144 (setq language-name "English"))
|
|
|
1145 (or (assoc-ignore-case language-name language-info-alist)
|
|
|
1146 (error "Language environment not defined: %S" language-name))
|
|
|
1147 (if current-language-environment
|
|
|
1148 (let ((func (get-language-info current-language-environment
|
|
|
1149 'exit-function)))
|
|
|
1150 (run-hooks 'exit-language-environment-hook)
|
|
|
1151 (if (fboundp func) (funcall func))))
|
|
|
1152 (let ((default-eol-type (coding-system-eol-type
|
|
|
1153 default-buffer-file-coding-system)))
|
|
|
1154 (reset-language-environment)
|
|
|
1155
|
|
|
1156 (setq current-language-environment language-name)
|
|
|
1157 (set-language-environment-coding-systems language-name default-eol-type))
|
|
|
1158 (let ((input-method (get-language-info language-name 'input-method)))
|
|
|
1159 (when input-method
|
|
|
1160 (setq default-input-method input-method)
|
|
|
1161 (if input-method-history
|
|
|
1162 (setq input-method-history
|
|
|
1163 (cons input-method
|
|
|
1164 (delete input-method input-method-history))))))
|
|
|
1165 ;; (let ((nonascii (get-language-info language-name 'nonascii-translation))
|
|
|
1166 ;; (dos-table
|
|
|
1167 ;; (if (eq window-system 'pc)
|
|
|
1168 ;; (intern
|
|
|
1169 ;; (concat "cp" dos-codepage "-nonascii-translation-table")))))
|
|
|
1170 ;; (cond
|
|
|
1171 ;; ((char-table-p nonascii)
|
|
|
1172 ;; (setq nonascii-translation-table nonascii))
|
|
|
1173 ;; ((and (eq window-system 'pc) (boundp dos-table))
|
|
|
1174 ;; ;; DOS terminals' default is to use a special non-ASCII translation
|
|
|
1175 ;; ;; table as appropriate for the installed codepage.
|
|
|
1176 ;; (setq nonascii-translation-table (symbol-value dos-table)))
|
|
|
1177 ;; ((charsetp nonascii)
|
|
|
1178 ;; (setq nonascii-insert-offset (- (make-char nonascii) 128)))))
|
|
|
1179
|
|
|
1180 ;; (setq charset-origin-alist
|
|
|
1181 ;; (get-language-info language-name 'charset-origin-alist))
|
|
|
1182
|
|
|
1183 ;; Unibyte setups if necessary.
|
|
|
1184 ;; (unless default-enable-multibyte-characters
|
|
|
1185 ;; ;; Syntax and case table.
|
|
|
1186 ;; (let ((syntax (get-language-info language-name 'unibyte-syntax)))
|
|
|
1187 ;; (if syntax
|
|
|
1188 ;; (let ((set-case-syntax-set-multibyte nil))
|
|
|
1189 ;; (load syntax nil t))
|
|
|
1190 ;; ;; No information for syntax and case. Reset to the defaults.
|
|
|
1191 ;; (let ((syntax-table (standard-syntax-table))
|
|
|
1192 ;; (case-table (standard-case-table))
|
|
|
1193 ;; (ch (if (eq window-system 'pc) 128 160)))
|
|
|
1194 ;; (while (< ch 256)
|
|
|
1195 ;; (modify-syntax-entry ch " " syntax-table)
|
|
|
1196 ;; (aset case-table ch ch)
|
|
|
1197 ;; (setq ch (1+ ch)))
|
|
|
1198 ;; (set-char-table-extra-slot case-table 0 nil)
|
|
|
1199 ;; (set-char-table-extra-slot case-table 1 nil)
|
|
|
1200 ;; (set-char-table-extra-slot case-table 2 nil))
|
|
|
1201 ;; (set-standard-case-table (standard-case-table))
|
|
|
1202 ;; (let ((list (buffer-list)))
|
|
|
1203 ;; (while list
|
|
|
1204 ;; (with-current-buffer (car list)
|
|
|
1205 ;; (set-case-table (standard-case-table)))
|
|
|
1206 ;; (setq list (cdr list))))))
|
|
|
1207 ;; ;; Display table and coding system for terminal.
|
|
|
1208 ;; (let ((coding (get-language-info language-name 'unibyte-display)))
|
|
|
1209 ;; (if coding
|
|
|
1210 ;; (standard-display-european-internal)
|
|
|
1211 ;; (standard-display-default (if (eq window-system 'pc) 128 160) 255)
|
|
|
1212 ;; (aset standard-display-table 146 nil))
|
|
|
1213 ;; (or (eq window-system 'pc)
|
|
|
1214 ;; (set-terminal-coding-system coding))))
|
|
|
1215
|
|
|
1216 (let ((required-features (get-language-info language-name 'features)))
|
|
|
1217 (while required-features
|
|
|
1218 (require (car required-features))
|
|
|
1219 (setq required-features (cdr required-features))))
|
|
|
1220 (let ((func (get-language-info language-name 'setup-function)))
|
|
|
1221 (if (fboundp func)
|
|
|
1222 (funcall func)))
|
|
|
1223 (run-hooks 'set-language-environment-hook)
|
|
|
1224 (force-mode-line-update t))
|
|
|
1225
|
|
|
1226 ;; (defun standard-display-european-internal ()
|
|
|
1227 ;; ;; Actually set up direct output of non-ASCII characters.
|
|
|
1228 ;; (standard-display-8bit (if (eq window-system 'pc) 128 160) 255)
|
|
|
1229 ;; ;; Unibyte Emacs on MS-DOS wants to display all 8-bit characters with
|
|
|
1230 ;; ;; the native font, and codes 160 and 146 stand for something very
|
|
|
1231 ;; ;; different there.
|
|
|
1232 ;; (or (and (eq window-system 'pc) (not default-enable-multibyte-characters))
|
|
|
1233 ;; (progn
|
|
|
1234 ;; ;; Make non-line-break space display as a plain space.
|
|
|
1235 ;; ;; Most X fonts do the wrong thing for code 160.
|
|
|
1236 ;; (aset standard-display-table 160 [32])
|
|
|
1237 ;; ;; Most Windows programs send out apostrophe's as \222. Most X fonts
|
|
|
1238 ;; ;; don't contain a character at that position. Map it to the ASCII
|
|
|
1239 ;; ;; apostrophe.
|
|
|
1240 ;; (aset standard-display-table 146 [39]))))
|
|
|
1241
|
|
|
1242 (defun set-language-environment-coding-systems (language-name
|
|
|
1243 &optional eol-type)
|
|
|
1244 "Do various coding system setups for language environment LANGUAGE-NAME.
|
|
|
1245
|
|
|
1246 The optional arg EOL-TYPE specifies the eol-type of the default value
|
|
|
1247 of buffer-file-coding-system set by this function."
|
|
|
1248 (let* ((priority (get-language-info language-name 'coding-priority))
|
|
|
1249 (default-coding (car priority)))
|
|
|
1250 (if priority
|
|
|
1251 (let ((categories (mapcar 'coding-system-category priority))
|
|
|
1252 category checked-categories)
|
|
|
1253 (set-default-coding-systems
|
|
|
1254 (if (memq eol-type '(lf crlf cr unix dos mac))
|
|
|
1255 (coding-system-change-eol-conversion default-coding eol-type)
|
|
|
1256 default-coding))
|
|
|
1257 ;; (setq default-sendmail-coding-system default-coding)
|
|
|
1258 (while priority
|
|
|
1259 (unless (memq (setq category (car categories)) checked-categories)
|
|
|
1260 (set-coding-category-system category (car priority))
|
|
|
1261 (setq checked-categories (cons category checked-categories)))
|
|
|
1262 (setq priority (cdr priority)
|
|
|
1263 categories (cdr categories)))
|
|
|
1264 (set-coding-priority-list (nreverse checked-categories))
|
|
|
1265 ;; (update-coding-systems-internal)
|
|
|
1266 ))))
|
|
|
1267
|
|
|
1268 ;; Print all arguments with `princ', then print "\n".
|
|
|
1269 (defsubst princ-list (&rest args)
|
|
|
1270 (while args (princ (car args)) (setq args (cdr args)))
|
|
|
1271 (princ "\n"))
|
|
|
1272
|
|
|
1273 (put 'describe-specified-language-support 'apropos-inhibit t)
|
|
|
1274
|
|
|
1275 ;; Print a language specific information such as input methods,
|
|
|
1276 ;; charsets, and coding systems. This function is intended to be
|
|
|
1277 ;; called from the menu:
|
|
|
1278 ;; [menu-bar mule describe-language-environment LANGUAGE]
|
|
|
1279 ;; and should not run it by `M-x describe-current-input-method-function'.
|
|
|
1280 (defun describe-specified-language-support ()
|
|
|
1281 "Describe how Emacs supports the specified language environment."
|
|
|
1282 (interactive)
|
|
|
1283 (let (language-name)
|
|
|
1284 (if (not (and (symbolp last-command-event)
|
|
|
1285 (setq language-name (symbol-name last-command-event))))
|
|
|
1286 (error "Bogus calling sequence"))
|
|
|
1287 (describe-language-environment language-name)))
|
|
|
1288
|
|
|
1289 (defun describe-language-environment (language-name)
|
|
|
1290 "Describe how Emacs supports language environment LANGUAGE-NAME."
|
|
|
1291 (interactive
|
|
|
1292 (list (read-language-name
|
|
|
1293 'documentation
|
|
|
1294 "Describe language environment (default, current choice): ")))
|
|
|
1295 (if (null language-name)
|
|
|
1296 (setq language-name current-language-environment))
|
|
|
1297 (if (or (null language-name)
|
|
|
1298 (null (get-language-info language-name 'documentation)))
|
|
|
1299 (error "No documentation for the specified language"))
|
|
|
1300 (if (symbolp language-name)
|
|
|
1301 (setq language-name (symbol-name language-name)))
|
|
|
1302 (let ((doc (get-language-info language-name 'documentation)))
|
|
|
1303 (with-output-to-temp-buffer "*Help*"
|
|
|
1304 (princ-list language-name " language environment" "\n")
|
|
|
1305 (if (stringp doc)
|
|
|
1306 (progn
|
|
|
1307 (princ-list doc)
|
|
|
1308 (terpri)))
|
|
|
1309 (let ((str (get-language-info language-name 'sample-text)))
|
|
|
1310 (if (stringp str)
|
|
|
1311 (progn
|
|
|
1312 (princ "Sample text:\n")
|
|
|
1313 (princ-list " " str)
|
|
|
1314 (terpri))))
|
|
|
1315 (let ((input-method (get-language-info language-name 'input-method))
|
|
|
1316 (l (copy-sequence input-method-alist)))
|
|
|
1317 (princ "Input methods")
|
|
|
1318 (when input-method
|
|
|
1319 (princ (format " (default, %s)" input-method))
|
|
|
1320 (setq input-method (assoc input-method input-method-alist))
|
|
|
1321 (setq l (cons input-method (delete input-method l))))
|
|
|
1322 (princ ":\n")
|
|
|
1323 (while l
|
|
|
1324 (if (string= language-name (nth 1 (car l)))
|
|
|
1325 (princ-list " " (car (car l))
|
|
|
1326 (format " (`%s' in mode line)" (nth 3 (car l)))))
|
|
|
1327 (setq l (cdr l))))
|
|
|
1328 (terpri)
|
|
|
1329 (princ "Character sets:\n")
|
|
|
1330 (let ((l (get-language-info language-name 'charset)))
|
|
|
1331 (if (null l)
|
|
|
1332 (princ-list " nothing specific to " language-name)
|
|
|
1333 (while l
|
|
|
1334 (princ-list " " (car l) ": "
|
|
|
1335 (charset-description (car l)))
|
|
|
1336 (setq l (cdr l)))))
|
|
|
1337 (terpri)
|
|
|
1338 (princ "Coding systems:\n")
|
|
|
1339 (let ((l (get-language-info language-name 'coding-system)))
|
|
|
1340 (if (null l)
|
|
|
1341 (princ-list " nothing specific to " language-name)
|
|
|
1342 (while l
|
|
|
1343 (princ ; (format " %s (`%c' in mode line):\n\t%s\n"
|
|
|
1344 ;; In XEmacs, `coding-system-mnemonic' returns string.
|
|
|
1345 (format " %s (`%s' in mode line):\n\t%s\n"
|
|
|
1346 (car l)
|
|
|
1347 (coding-system-mnemonic (car l))
|
|
|
1348 (coding-system-doc-string (car l))))
|
|
|
1349 ;; (let ((aliases (coding-system-get (car l) 'alias-coding-systems)))
|
|
|
1350 ;; (when aliases
|
|
|
1351 ;; (princ "\t")
|
|
|
1352 ;; (princ (cons 'alias: (cdr aliases)))
|
|
|
1353 ;; (terpri)))
|
|
|
1354 (setq l (cdr l))))))))
|
|
|
1355
|
|
|
1356 ;;; Charset property
|
|
|
1357
|
|
|
1358 ;; (defsubst get-charset-property (charset propname)
|
|
|
1359 ;; "Return the value of CHARSET's PROPNAME property.
|
|
|
1360 ;; This is the last value stored with
|
|
|
1361 ;; `(put-charset-property CHARSET PROPNAME VALUE)'."
|
|
|
1362 ;; (plist-get (charset-plist charset) propname))
|
|
|
1363
|
|
|
1364 ;; (defsubst put-charset-property (charset propname value)
|
|
|
1365 ;; "Store CHARSETS's PROPNAME property with value VALUE.
|
|
|
1366 ;; It can be retrieved with `(get-charset-property CHARSET PROPNAME)'."
|
|
|
1367 ;; (set-charset-plist charset
|
|
|
1368 ;; (plist-put (charset-plist charset) propname value)))
|
|
|
1369
|
|
|
1370 (defvar char-code-property-table
|
|
|
1371 (make-char-table 'generic)
|
|
|
1372 "Char-table containing a property list of each character code.
|
|
|
1373
|
|
|
1374 See also the documentation of `get-char-code-property' and
|
|
|
1375 `put-char-code-property'")
|
|
|
1376 ;; (let ((plist (aref char-code-property-table char)))
|
|
|
1377 (defun get-char-code-property (char propname)
|
|
|
1378 "Return the value of CHAR's PROPNAME property in `char-code-property-table'."
|
|
|
1379 (let ((plist (get-char-table char char-code-property-table)))
|
|
|
1380 (if (listp plist)
|
|
|
1381 (car (cdr (memq propname plist))))))
|
|
|
1382
|
|
|
1383 (defun put-char-code-property (char propname value)
|
|
|
1384 "Store CHAR's PROPNAME property with VALUE in `char-code-property-table'.
|
|
|
1385 It can be retrieved with `(get-char-code-property CHAR PROPNAME)'."
|
|
|
1386 (let ((plist (get-char-table char char-code-property-table)))
|
|
|
1387 (if plist
|
|
|
1388 (let ((slot (memq propname plist)))
|
|
|
1389 (if slot
|
|
|
1390 (setcar (cdr slot) value)
|
|
|
1391 (nconc plist (list propname value))))
|
|
|
1392 (put-char-table char (list propname value) char-code-property-table)
|
|
|
1393 )))
|
|
|
1394
|
|
|
1395
|
|
|
1396 ;; Pretty description of encoded string
|
|
|
1397
|
|
|
1398 ;; Alist of ISO 2022 control code vs the corresponding mnemonic string.
|
|
|
1399 ;; (defvar iso-2022-control-alist
|
|
|
1400 ;; '((?\x1b . "ESC")
|
|
|
1401 ;; (?\x0e . "SO")
|
|
|
1402 ;; (?\x0f . "SI")
|
|
|
1403 ;; (?\x8e . "SS2")
|
|
|
1404 ;; (?\x8f . "SS3")
|
|
|
1405 ;; (?\x9b . "CSI")))
|
|
|
1406
|
|
|
1407 ;; (defun encoded-string-description (str coding-system)
|
|
|
1408 ;; "Return a pretty description of STR that is encoded by CODING-SYSTEM."
|
|
|
1409 ;; (setq str (string-as-unibyte str))
|
|
|
1410 ;; (let ((char (aref str 0))
|
|
|
1411 ;; desc)
|
|
|
1412 ;; (when (< char 128)
|
|
|
1413 ;; (setq desc (or (cdr (assq char iso-2022-control-alist))
|
|
|
1414 ;; (char-to-string char)))
|
|
|
1415 ;; (let ((i 1)
|
|
|
1416 ;; (len (length str)))
|
|
|
1417 ;; (while (< i len)
|
|
|
1418 ;; (setq char (aref str i))
|
|
|
1419 ;; (if (>= char 128)
|
|
|
1420 ;; (setq desc nil i len)
|
|
|
1421 ;; (setq desc (concat desc " "
|
|
|
1422 ;; (or (cdr (assq char iso-2022-control-alist))
|
|
|
1423 ;; (char-to-string char)))
|
|
|
1424 ;; i (1+ i))))))
|
|
|
1425 ;; (or desc
|
|
|
1426 ;; (mapconcat (function (lambda (x) (format "0x%02x" x))) str " "))))
|
|
|
1427
|
|
|
1428 ;; (defun encode-coding-char (char coding-system)
|
|
|
1429 ;; "Encode CHAR by CODING-SYSTEM and return the resulting string.
|
|
|
1430 ;; If CODING-SYSTEM can't safely encode CHAR, return nil."
|
|
|
1431 ;; (if (cmpcharp char)
|
|
|
1432 ;; (setq char (car (decompose-composite-char char 'list))))
|
|
|
1433 ;; (let ((str1 (char-to-string char))
|
|
|
1434 ;; (str2 (make-string 2 char))
|
|
|
1435 ;; (safe-charsets (and coding-system
|
|
|
1436 ;; (coding-system-get coding-system 'safe-charsets)))
|
|
|
1437 ;; enc1 enc2 i1 i2)
|
|
|
1438 ;; (when (or (eq safe-charsets t)
|
|
|
1439 ;; (memq (char-charset char) safe-charsets))
|
|
|
1440 ;; ;; We must find the encoded string of CHAR. But, just encoding
|
|
|
1441 ;; ;; CHAR will put extra control sequences (usually to designate
|
|
440
|
1442 ;; ;; ASCII charset) at the tail if type of CODING is ISO 2022.
|
|
428
|
1443 ;; ;; To exclude such tailing bytes, we at first encode one-char
|
|
|
1444 ;; ;; string and two-char string, then check how many bytes at the
|
|
|
1445 ;; ;; tail of both encoded strings are the same.
|
|
|
1446 ;;
|
|
|
1447 ;; (setq enc1 (string-as-unibyte (encode-coding-string str1 coding-system))
|
|
|
1448 ;; i1 (length enc1)
|
|
|
1449 ;; enc2 (string-as-unibyte (encode-coding-string str2 coding-system))
|
|
|
1450 ;; i2 (length enc2))
|
|
|
1451 ;; (while (and (> i1 0) (= (aref enc1 (1- i1)) (aref enc2 (1- i2))))
|
|
|
1452 ;; (setq i1 (1- i1) i2 (1- i2)))
|
|
|
1453 ;;
|
|
|
1454 ;; ;; Now (substring enc1 i1) and (substring enc2 i2) are the same,
|
|
|
1455 ;; ;; and they are the extra control sequences at the tail to
|
|
|
1456 ;; ;; exclude.
|
|
|
1457 ;; (substring enc2 0 i2))))
|
|
|
1458
|
|
|
1459
|
|
|
1460 ;;; mule-cmds.el ends here
|
