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4ed46869 KH |
1 | ;;; mule-cmds.el --- Commands for mulitilingual environment |
2 | ||
4ed46869 | 3 | ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN. |
fa526c4a | 4 | ;; Licensed to the Free Software Foundation. |
cda74479 | 5 | ;; Copyright (C) 2000 Free Software Foundation, Inc. |
4ed46869 KH |
6 | |
7 | ;; Keywords: mule, multilingual | |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
369314dc KH |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
4ed46869 KH |
25 | |
26 | ;;; Code: | |
27 | ||
cda74479 DL |
28 | (eval-when-compile (defvar dos-codepage)) |
29 | ||
4ed46869 KH |
30 | ;;; MULE related key bindings and menus. |
31 | ||
0709d285 | 32 | (defvar mule-keymap (make-sparse-keymap) |
33d17698 | 33 | "Keymap for Mule (Multilingual environment) specific commands.") |
4ed46869 | 34 | |
8f81f784 | 35 | ;; Keep "C-x C-m ..." for mule specific commands. |
0709d285 | 36 | (define-key ctl-x-map "\C-m" mule-keymap) |
ef8a8c8c | 37 | |
4ed46869 KH |
38 | (define-key mule-keymap "f" 'set-buffer-file-coding-system) |
39 | (define-key mule-keymap "t" 'set-terminal-coding-system) | |
15b3e511 KH |
40 | (define-key mule-keymap "k" 'set-keyboard-coding-system) |
41 | (define-key mule-keymap "p" 'set-buffer-process-coding-system) | |
7624ebb9 KH |
42 | (define-key mule-keymap "x" 'set-selection-coding-system) |
43 | (define-key mule-keymap "X" 'set-next-selection-coding-system) | |
8b784951 | 44 | (define-key mule-keymap "\C-\\" 'set-input-method) |
15b3e511 | 45 | (define-key mule-keymap "c" 'universal-coding-system-argument) |
b4fba33f | 46 | (define-key mule-keymap "l" 'set-language-environment) |
4ed46869 | 47 | |
281d03ec | 48 | (define-key help-map "\C-L" 'describe-language-environment) |
ac4a3a2d | 49 | (define-key help-map "L" 'describe-language-environment) |
4ed46869 | 50 | (define-key help-map "\C-\\" 'describe-input-method) |
ac4a3a2d | 51 | (define-key help-map "I" 'describe-input-method) |
d0b9c3ab | 52 | (define-key help-map "C" 'describe-coding-system) |
4ed46869 KH |
53 | (define-key help-map "h" 'view-hello-file) |
54 | ||
538d88fb EZ |
55 | (defvar mule-menu-keymap |
56 | (make-sparse-keymap "Mule (Multilingual Environment)") | |
33d17698 | 57 | "Keymap for Mule (Multilingual environment) menu specific commands.") |
15b3e511 | 58 | |
dcad02bc EZ |
59 | (defvar describe-language-environment-map |
60 | (make-sparse-keymap "Describe Language Environment")) | |
15b3e511 | 61 | |
dcad02bc EZ |
62 | (defvar setup-language-environment-map |
63 | (make-sparse-keymap "Set Language Environment")) | |
15b3e511 | 64 | |
dcad02bc EZ |
65 | (defvar set-coding-system-map |
66 | (make-sparse-keymap "Set Coding System")) | |
15b3e511 | 67 | |
15b3e511 | 68 | (define-key-after mule-menu-keymap [set-language-environment] |
cda74479 DL |
69 | (list 'menu-item "Set Language Environment" setup-language-environment-map |
70 | :help "Multilingual environment suitable for a specific language")) | |
a61f401d | 71 | (define-key-after mule-menu-keymap [mouse-set-font] |
538d88fb | 72 | '(menu-item "Set Font/Fontset" mouse-set-font |
cda74479 DL |
73 | :visible (fboundp 'generate-fontset-menu) |
74 | :help "Select a font from list of known fonts/fontsets")) | |
15b3e511 KH |
75 | (define-key-after mule-menu-keymap [separator-mule] |
76 | '("--") | |
77 | t) | |
78 | (define-key-after mule-menu-keymap [toggle-input-method] | |
538d88fb | 79 | '(menu-item "Toggle Input Method" toggle-input-method) |
15b3e511 | 80 | t) |
8b784951 | 81 | (define-key-after mule-menu-keymap [set-input-method] |
538d88fb | 82 | '(menu-item "Select Input Method..." set-input-method) |
15b3e511 | 83 | t) |
cda74479 DL |
84 | (define-key-after mule-menu-keymap [describe-input-method] |
85 | '(menu-item "Describe Input Method" describe-input-method)) | |
15b3e511 KH |
86 | (define-key-after mule-menu-keymap [separator-input-method] |
87 | '("--") | |
88 | t) | |
15b3e511 | 89 | (define-key-after mule-menu-keymap [set-various-coding-system] |
cda74479 DL |
90 | (list 'menu-item "Set Coding Systems" set-coding-system-map |
91 | :enable 'enable-multibyte-characters)) | |
538d88fb EZ |
92 | (define-key-after mule-menu-keymap [view-hello-file] |
93 | '(menu-item "Show Multi-lingual Text" view-hello-file | |
94 | :enable (file-readable-p | |
95 | (expand-file-name "HELLO" data-directory)) | |
96 | :help "Display file which says HELLO in many languages") | |
15b3e511 KH |
97 | t) |
98 | (define-key-after mule-menu-keymap [separator-coding-system] | |
99 | '("--") | |
100 | t) | |
538d88fb EZ |
101 | (define-key-after mule-menu-keymap [describe-language-environment] |
102 | (list 'menu-item "Describe Language Environment" | |
103 | describe-language-environment-map | |
cda74479 | 104 | :help "Show multilingual settings for a specific language") |
15b3e511 | 105 | t) |
538d88fb EZ |
106 | (define-key-after mule-menu-keymap [describe-input-method] |
107 | '(menu-item "Describe Input Method..." describe-input-method | |
cda74479 | 108 | :help "Keyboard layout for a specific input method") |
538d88fb EZ |
109 | t) |
110 | (define-key-after mule-menu-keymap [describe-coding-system] | |
111 | '(menu-item "Describe Coding System..." describe-coding-system) | |
112 | t) | |
cda74479 DL |
113 | (define-key-after mule-menu-keymap [list-character-sets] |
114 | '(menu-item "List Character Sets" list-character-sets | |
115 | :help "Show table of available character sets")) | |
538d88fb EZ |
116 | (define-key-after mule-menu-keymap [mule-diag] |
117 | '(menu-item "Show All of Mule Status" mule-diag | |
118 | :help "Display multilingual environment settings") | |
15b3e511 KH |
119 | t) |
120 | ||
121 | (define-key-after set-coding-system-map [set-buffer-file-coding-system] | |
538d88fb EZ |
122 | '(menu-item "For Saving this Buffer" set-buffer-file-coding-system |
123 | :help "How to encode this buffer on disk") | |
15b3e511 | 124 | t) |
3a151e98 | 125 | (define-key-after set-coding-system-map [universal-coding-system-argument] |
538d88fb EZ |
126 | '(menu-item "For Next Command" universal-coding-system-argument |
127 | :help "Coding system to be used by next command") | |
3a151e98 | 128 | t) |
15b3e511 | 129 | (define-key-after set-coding-system-map [set-terminal-coding-system] |
538d88fb EZ |
130 | '(menu-item "For Terminal" set-terminal-coding-system |
131 | :enable (null (memq window-system '(x w32 mac))) | |
132 | :help "How to encode terminal output") | |
15b3e511 KH |
133 | t) |
134 | (define-key-after set-coding-system-map [set-keyboard-coding-system] | |
538d88fb EZ |
135 | '(menu-item "For Keyboard" set-keyboard-coding-system |
136 | :help "How to decode keyboard input") | |
15b3e511 KH |
137 | t) |
138 | (define-key-after set-coding-system-map [set-buffer-process-coding-system] | |
538d88fb EZ |
139 | '(menu-item "For I/O with Subprocess" set-buffer-process-coding-system |
140 | :visible (fboundp 'start-process) | |
141 | :enable (get-buffer-process (current-buffer)) | |
142 | :help "How to en/decode I/O from/to subprocess connected to this buffer") | |
15b3e511 | 143 | t) |
7624ebb9 | 144 | (define-key-after set-coding-system-map [set-selection-coding-system] |
538d88fb EZ |
145 | '(menu-item "For X Selections/Clipboard" set-selection-coding-system |
146 | :visible (display-selections-p) | |
147 | :help "How to en/decode data to/from selection/clipboard") | |
7624ebb9 KH |
148 | t) |
149 | (define-key-after set-coding-system-map [set-next-selection-coding-system] | |
538d88fb EZ |
150 | '(menu-item "For Next X Selection" set-next-selection-coding-system |
151 | :visible (display-selections-p) | |
152 | :help "How to en/decode next selection/clipboard operation") | |
7624ebb9 | 153 | t) |
15b3e511 | 154 | (define-key setup-language-environment-map |
538d88fb | 155 | [Default] '(menu-item "Default" setup-specified-language-environment)) |
4ed46869 | 156 | |
cda74479 DL |
157 | (define-key describe-language-environment-map |
158 | [Default] '(menu-item "Default" describe-specified-language-support)) | |
159 | ||
4ed46869 KH |
160 | ;; This should be a single character key binding because users use it |
161 | ;; very frequently while editing multilingual text. Now we can use | |
162 | ;; only two such keys: "\C-\\" and "\C-^", but the latter is not | |
163 | ;; convenient because it requires shifting on most keyboards. An | |
164 | ;; alternative is "\C-\]" which is now bound to `abort-recursive-edit' | |
165 | ;; but it won't be used that frequently. | |
166 | (define-key global-map "\C-\\" 'toggle-input-method) | |
167 | ||
a2ad45b9 RS |
168 | ;;; This is no good because people often type Shift-SPC |
169 | ;;; meaning to type SPC. -- rms. | |
170 | ;;; ;; Here's an alternative key binding for X users (Shift-SPACE). | |
171 | ;;; (define-key global-map [?\S- ] 'toggle-input-method) | |
b4fba33f | 172 | |
464cc130 KH |
173 | ;;; Mule related hyperlinks. |
174 | (defconst help-xref-mule-regexp-template | |
175 | (purecopy (concat "\\(\\<\\(" | |
176 | "\\(coding system\\)\\|" | |
d0c40faa KH |
177 | "\\(input method\\)\\|" |
178 | "\\(character set\\)\\|" | |
179 | "\\(charset\\)" | |
464cc130 KH |
180 | "\\)\\s-+\\)?" |
181 | ;; Note starting with word-syntax character: | |
182 | "`\\(\\sw\\(\\sw\\|\\s_\\)+\\)'"))) | |
183 | ||
26d87040 EZ |
184 | (defun coding-system-change-eol-conversion (coding-system eol-type) |
185 | "Return a coding system which differs from CODING-SYSTEM in eol conversion. | |
186 | The returned coding system converts end-of-line by EOL-TYPE | |
187 | but text as the same way as CODING-SYSTEM. | |
188 | EOL-TYPE should be `unix', `dos', `mac', or nil. | |
189 | If EOL-TYPE is nil, the returned coding system detects | |
190 | how end-of-line is formatted automatically while decoding. | |
191 | ||
192 | EOL-TYPE can be specified by an integer 0, 1, or 2. | |
193 | They means `unix', `dos', and `mac' respectively." | |
194 | (if (symbolp eol-type) | |
195 | (setq eol-type (cond ((eq eol-type 'unix) 0) | |
196 | ((eq eol-type 'dos) 1) | |
197 | ((eq eol-type 'mac) 2) | |
198 | (t eol-type)))) | |
199 | (let ((orig-eol-type (coding-system-eol-type coding-system))) | |
200 | (if (vectorp orig-eol-type) | |
201 | (if (not eol-type) | |
202 | coding-system | |
203 | (aref orig-eol-type eol-type)) | |
204 | (let ((base (coding-system-base coding-system))) | |
205 | (if (not eol-type) | |
206 | base | |
207 | (if (= eol-type orig-eol-type) | |
208 | coding-system | |
209 | (setq orig-eol-type (coding-system-eol-type base)) | |
210 | (if (vectorp orig-eol-type) | |
211 | (aref orig-eol-type eol-type)))))))) | |
212 | ||
213 | (defun coding-system-change-text-conversion (coding-system coding) | |
214 | "Return a coding system which differs from CODING-SYSTEM in text conversion. | |
215 | The returned coding system converts text by CODING | |
216 | but end-of-line as the same way as CODING-SYSTEM. | |
217 | If CODING is nil, the returned coding system detects | |
218 | how text is formatted automatically while decoding." | |
219 | (if (not coding) | |
220 | (coding-system-base coding-system) | |
221 | (let ((eol-type (coding-system-eol-type coding-system))) | |
222 | (coding-system-change-eol-conversion | |
223 | coding | |
224 | (if (numberp eol-type) (aref [unix dos mac] eol-type)))))) | |
225 | ||
4ed46869 | 226 | (defun toggle-enable-multibyte-characters (&optional arg) |
6998e1a1 RS |
227 | "Change whether this buffer uses multibyte characters. |
228 | With arg, use multibyte characters if the arg is positive. | |
229 | ||
230 | Note that this command does not convert the byte contents of | |
231 | the buffer; it only changes the way those bytes are interpreted. | |
232 | In general, therefore, this command *changes* the sequence of | |
233 | characters that the current buffer contains. | |
234 | ||
235 | We suggest you avoid using use this command unless you know what you | |
236 | are doing. If you use it by mistake, and the buffer is now displayed | |
237 | wrong, use this command again to toggle back to the right mode." | |
4ed46869 | 238 | (interactive "P") |
b7079457 RS |
239 | (let ((new-flag |
240 | (if (null arg) (null enable-multibyte-characters) | |
241 | (> (prefix-numeric-value arg) 0)))) | |
242 | (set-buffer-multibyte new-flag)) | |
4ed46869 KH |
243 | (force-mode-line-update)) |
244 | ||
245 | (defun view-hello-file () | |
246 | "Display the HELLO file which list up many languages and characters." | |
247 | (interactive) | |
8f81f784 KH |
248 | ;; We have to decode the file in any environment. |
249 | (let ((default-enable-multibyte-characters t) | |
95fa03b4 | 250 | (coding-system-for-read 'iso-2022-7bit)) |
8f81f784 | 251 | (find-file-read-only (expand-file-name "HELLO" data-directory)))) |
4ed46869 | 252 | |
15b3e511 KH |
253 | (defun universal-coding-system-argument () |
254 | "Execute an I/O command using the specified coding system." | |
255 | (interactive) | |
34104362 KH |
256 | (let* ((default (and buffer-file-coding-system |
257 | (not (eq (coding-system-type buffer-file-coding-system) | |
258 | t)) | |
259 | buffer-file-coding-system)) | |
260 | (coding-system (read-coding-system | |
261 | (if default | |
262 | (format "Coding system for following command (default, %s): " default) | |
263 | "Coding system for following command: ") | |
264 | default)) | |
15b3e511 | 265 | (keyseq (read-key-sequence |
e14a8f4c | 266 | (format "Command to execute with %s:" coding-system))) |
15b3e511 KH |
267 | (cmd (key-binding keyseq))) |
268 | (let ((coding-system-for-read coding-system) | |
269 | (coding-system-for-write coding-system)) | |
270 | (message "") | |
271 | (call-interactively cmd)))) | |
272 | ||
de94d711 | 273 | (defun set-default-coding-systems (coding-system) |
0c3154d2 | 274 | "Set default value of various coding systems to CODING-SYSTEM. |
387136f6 | 275 | This sets the following coding systems: |
0c3154d2 | 276 | o coding system of a newly created buffer |
8efc03e1 KH |
277 | o default coding system for subprocess I/O |
278 | This also sets the following values: | |
387136f6 | 279 | o default value used as file-name-coding-system for converting file names. |
03c35c83 EZ |
280 | o default value for the command `set-terminal-coding-system' (not on MSDOS) |
281 | o default value for the command `set-keyboard-coding-system'." | |
de94d711 KH |
282 | (check-coding-system coding-system) |
283 | (setq-default buffer-file-coding-system coding-system) | |
716184d4 RS |
284 | (if default-enable-multibyte-characters |
285 | (setq default-file-name-coding-system coding-system)) | |
03c35c83 EZ |
286 | ;; If coding-system is nil, honor that on MS-DOS as well, so |
287 | ;; that they could reset the terminal coding system. | |
288 | (unless (and (eq window-system 'pc) coding-system) | |
289 | (setq default-terminal-coding-system coding-system)) | |
de94d711 KH |
290 | (setq default-keyboard-coding-system coding-system) |
291 | (setq default-process-coding-system (cons coding-system coding-system))) | |
292 | ||
45d08cb2 | 293 | (defalias 'update-iso-coding-systems 'update-coding-systems-internal) |
2598a293 | 294 | (make-obsolete 'update-iso-coding-systems 'update-coding-systems-internal "20.3") |
45d08cb2 | 295 | |
0c3154d2 KH |
296 | (defun prefer-coding-system (coding-system) |
297 | "Add CODING-SYSTEM at the front of the priority list for automatic detection. | |
387136f6 | 298 | This also sets the following coding systems: |
0c3154d2 | 299 | o coding system of a newly created buffer |
8efc03e1 KH |
300 | o default coding system for subprocess I/O |
301 | This also sets the following values: | |
387136f6 | 302 | o default value used as file-name-coding-system for converting file names. |
03c35c83 EZ |
303 | o default value for the command `set-terminal-coding-system' (not on MSDOS) |
304 | o default value for the command `set-keyboard-coding-system' | |
305 | ||
bd3ac67e EZ |
306 | If CODING-SYSTEM specifies a certain type of EOL conversion, the coding |
307 | systems set by this function will use that type of EOL conversion. | |
308 | ||
03c35c83 EZ |
309 | This command does not change the default value of terminal coding system |
310 | for MS-DOS terminal, because DOS terminals only support a single coding | |
311 | system, and Emacs automatically sets the default to that coding system at | |
312 | startup." | |
0c3154d2 KH |
313 | (interactive "zPrefer coding system: ") |
314 | (if (not (and coding-system (coding-system-p coding-system))) | |
315 | (error "Invalid coding system `%s'" coding-system)) | |
316 | (let ((coding-category (coding-system-category coding-system)) | |
bd3ac67e EZ |
317 | (base (coding-system-base coding-system)) |
318 | (eol-type (coding-system-eol-type coding-system))) | |
0c3154d2 KH |
319 | (if (not coding-category) |
320 | ;; CODING-SYSTEM is no-conversion or undecided. | |
321 | (error "Can't prefer the coding system `%s'" coding-system)) | |
8efc03e1 | 322 | (set coding-category (or base coding-system)) |
45d08cb2 | 323 | (update-coding-systems-internal) |
812cad80 | 324 | (or (eq coding-category (car coding-category-list)) |
0c3154d2 | 325 | ;; We must change the order. |
812cad80 | 326 | (set-coding-priority (list coding-category))) |
8efc03e1 KH |
327 | (if (and base (interactive-p)) |
328 | (message "Highest priority is set to %s (base of %s)" | |
329 | base coding-system)) | |
bd3ac67e | 330 | ;; If they asked for specific EOL conversion, honor that. |
6f9dc4fd | 331 | (if (memq eol-type '(0 1 2)) |
bd3ac67e EZ |
332 | (setq coding-system |
333 | (coding-system-change-eol-conversion base eol-type)) | |
334 | (setq coding-system base)) | |
335 | (set-default-coding-systems coding-system))) | |
0c3154d2 | 336 | |
b5edd1d1 KH |
337 | (defvar sort-coding-systems-predicate nil |
338 | "If non-nil, a predicate function to sort coding systems. | |
339 | ||
340 | It is called with two coding systems, and should return t if the first | |
341 | one is \"less\" than the second. | |
342 | ||
343 | The function `sort-coding-systems' use it.") | |
344 | ||
345 | (defun sort-coding-systems (codings) | |
346 | "Sort coding system list CODINGS by a priority of each coding system. | |
347 | ||
348 | If a coding system is most preferred, it has the highest priority. | |
349 | Otherwise, a coding system corresponds to some MIME charset has higher | |
350 | priorities. Among them, a coding system included in `coding-system' | |
351 | key of the current language environment has higher priorities. See | |
352 | also the documentation of `language-info-alist'. | |
353 | ||
354 | If the variable `sort-coding-systems-predicate' (which see) is | |
355 | non-nil, it is used to sort CODINGS in the different way than above." | |
356 | (if sort-coding-systems-predicate | |
357 | (sort codings sort-coding-systems-predicate) | |
358 | (let* ((most-preferred (symbol-value (car coding-category-list))) | |
359 | (lang-preferred (get-language-info current-language-environment | |
360 | 'coding-system)) | |
361 | (func (function | |
362 | (lambda (x) | |
363 | (let ((base (coding-system-base x))) | |
364 | (+ (if (eq base most-preferred) 64 0) | |
365 | (let ((mime (coding-system-get base 'mime-charset))) | |
366 | (if mime | |
367 | (if (string-match "^x-" (symbol-name mime)) | |
368 | 16 32) | |
369 | 0)) | |
370 | (if (memq base lang-preferred) 8 0) | |
371 | (if (string-match "-with-esc$" (symbol-name base)) | |
372 | 0 4) | |
373 | (if (eq (coding-system-type base) 2) | |
374 | ;; For ISO based coding systems, prefer | |
375 | ;; one that doesn't use escape sequences. | |
376 | (let ((flags (coding-system-flags base))) | |
377 | (if (or (consp (aref flags 0)) | |
378 | (consp (aref flags 1)) | |
379 | (consp (aref flags 2)) | |
380 | (consp (aref flags 3))) | |
381 | (if (or (aref flags 8) (aref flags 9)) | |
382 | 0 | |
383 | 1) | |
384 | 2)) | |
385 | 1))))))) | |
386 | (sort codings (function (lambda (x y) | |
387 | (> (funcall func x) (funcall func y)))))))) | |
54b226f7 | 388 | |
3fc7dfe5 | 389 | (defun find-coding-systems-region (from to) |
54b226f7 KH |
390 | "Return a list of proper coding systems to encode a text between FROM and TO. |
391 | All coding systems in the list can safely encode any multibyte characters | |
392 | in the text. | |
393 | ||
e8dd0160 | 394 | If the text contains no multibyte characters, return a list of a single |
3fc7dfe5 | 395 | element `undecided'." |
b5edd1d1 KH |
396 | (let ((codings (find-coding-systems-region-internal from to))) |
397 | (if (eq codings t) | |
398 | ;; The text contains only ASCII characters. Any coding | |
399 | ;; systems are safe. | |
400 | '(undecided) | |
401 | ;; We need copy-sequence because sorting will alter the argument. | |
402 | (sort-coding-systems (copy-sequence codings))))) | |
54b226f7 | 403 | |
3fc7dfe5 KH |
404 | (defun find-coding-systems-string (string) |
405 | "Return a list of proper coding systems to encode STRING. | |
406 | All coding systems in the list can safely encode any multibyte characters | |
407 | in STRING. | |
408 | ||
e8dd0160 | 409 | If STRING contains no multibyte characters, return a list of a single |
3fc7dfe5 | 410 | element `undecided'." |
b5edd1d1 | 411 | (find-coding-systems-region string nil)) |
3fc7dfe5 KH |
412 | |
413 | (defun find-coding-systems-for-charsets (charsets) | |
414 | "Return a list of proper coding systems to encode characters of CHARSETS. | |
415 | CHARSETS is a list of character sets." | |
b5edd1d1 KH |
416 | (cond ((or (null charsets) |
417 | (and (= (length charsets) 1) | |
418 | (eq 'ascii (car charsets)))) | |
419 | '(undecided)) | |
420 | ((or (memq 'eight-bit-control charsets) | |
421 | (memq 'eight-bit-graphic charsets)) | |
422 | '(raw-text emacs-mule)) | |
423 | (t | |
424 | (let ((codings t) | |
425 | charset l ll) | |
426 | (while (and codings charsets) | |
427 | (setq charset (car charsets) charsets (cdr charsets)) | |
428 | (unless (eq charset 'ascii) | |
429 | (setq l (aref char-coding-system-table (make-char charset))) | |
430 | (if (eq codings t) | |
431 | (setq codings l) | |
432 | (let ((ll nil)) | |
433 | (while codings | |
434 | (if (memq (car codings) l) | |
435 | (setq ll (cons (car codings) ll))) | |
436 | (setq codings (cdr codings))) | |
437 | (setq codings ll))))) | |
438 | (append codings | |
439 | (char-table-extra-slot char-coding-system-table 0)))))) | |
54b226f7 | 440 | |
51ed58ea KH |
441 | (defun find-multibyte-characters (from to &optional maxcount excludes) |
442 | "Find multibyte characters in the region specified by FROM and TO. | |
443 | If FROM is a string, find multibyte characters in the string. | |
444 | The return value is an alist of the following format: | |
445 | ((CHARSET COUNT CHAR ...) ...) | |
446 | where | |
447 | CHARSET is a character set, | |
448 | COUNT is a number of characters, | |
449 | CHARs are found characters of the character set. | |
450 | Optional 3rd arg MAXCOUNT limits how many CHARs are put in the above list. | |
251d4f4b KH |
451 | Optional 4th arg EXCLUDE is a list of character sets to be ignored. |
452 | ||
453 | For invalid characters, CHARs are actually strings." | |
51ed58ea KH |
454 | (let ((chars nil) |
455 | charset char) | |
456 | (if (stringp from) | |
457 | (let ((idx 0)) | |
458 | (while (setq idx (string-match "[^\000-\177]" from idx)) | |
459 | (setq char (aref from idx) | |
460 | charset (char-charset char)) | |
251d4f4b KH |
461 | (if (eq charset 'unknown) |
462 | (setq char (match-string 0))) | |
14333e31 KH |
463 | (if (or (memq charset '(unknown |
464 | eight-bit-control eight-bit-graphic)) | |
251d4f4b | 465 | (not (or (eq excludes t) (memq charset excludes)))) |
51ed58ea KH |
466 | (let ((slot (assq charset chars))) |
467 | (if slot | |
468 | (if (not (memq char (nthcdr 2 slot))) | |
469 | (let ((count (nth 1 slot))) | |
470 | (setcar (cdr slot) (1+ count)) | |
471 | (if (or (not maxcount) (< count maxcount)) | |
472 | (nconc slot (list char))))) | |
473 | (setq chars (cons (list charset 1 char) chars))))) | |
474 | (setq idx (1+ idx)))) | |
475 | (save-excursion | |
476 | (goto-char from) | |
477 | (while (re-search-forward "[^\000-\177]" to t) | |
478 | (setq char (preceding-char) | |
479 | charset (char-charset char)) | |
251d4f4b KH |
480 | (if (eq charset 'unknown) |
481 | (setq char (match-string 0))) | |
14333e31 | 482 | (if (or (memq charset '(unknown eight-bit-control eight-bit-graphic)) |
251d4f4b | 483 | (not (or (eq excludes t) (memq charset excludes)))) |
51ed58ea KH |
484 | (let ((slot (assq charset chars))) |
485 | (if slot | |
251d4f4b | 486 | (if (not (member char (nthcdr 2 slot))) |
51ed58ea KH |
487 | (let ((count (nth 1 slot))) |
488 | (setcar (cdr slot) (1+ count)) | |
489 | (if (or (not maxcount) (< count maxcount)) | |
490 | (nconc slot (list char))))) | |
491 | (setq chars (cons (list charset 1 char) chars)))))))) | |
492 | (nreverse chars))) | |
493 | ||
c83c4f60 RS |
494 | (defvar last-coding-system-specified nil |
495 | "Most recent coding system explicitly specified by the user when asked. | |
496 | This variable is set whenever Emacs asks the user which coding system | |
497 | to use in order to write a file. If you set it to nil explicitly, | |
498 | then call `write-region', then afterward this variable will be non-nil | |
499 | only if the user was explicitly asked and specified a coding system.") | |
500 | ||
b5edd1d1 KH |
501 | (defvar select-safe-coding-system-accept-default-p nil |
502 | "If non-nil, a function to control the behaviour of coding system selection. | |
503 | The meaning is the same as the argument ACCEPT-DEFAULT-P of the | |
504 | function `select-safe-coding-system' (which see). This variable | |
505 | overrides that argument.") | |
506 | ||
507 | (defun select-safe-coding-system (from to &optional default-coding-system | |
508 | accept-default-p) | |
d5266ddf KH |
509 | "Ask a user to select a safe coding system from candidates. |
510 | The candidates of coding systems which can safely encode a text | |
b5edd1d1 KH |
511 | between FROM and TO are shown in a popup window. Among them, the most |
512 | proper one is suggested as the default. | |
513 | ||
514 | The list of `buffer-file-coding-system' of the current buffer and the | |
515 | most preferred coding system (if it corresponds to a MIME charset) is | |
516 | treated as the default coding system list. Among them, the first one | |
517 | that safely encodes the text is silently selected and returned without | |
518 | any user interaction. See also the command `prefer-coding-system'. | |
54b226f7 | 519 | |
b5edd1d1 KH |
520 | Optional 3rd arg DEFAULT-CODING-SYSTEM specifies a coding system or a |
521 | list of coding systems to be prepended to the default coding system | |
522 | list. | |
54b226f7 | 523 | |
b5edd1d1 KH |
524 | Optional 4th arg ACCEPT-DEFAULT-P, if non-nil, is a function to |
525 | determine the acceptability of the silently selected coding system. | |
526 | It is called with that coding system, and should return nil if it | |
527 | should not be silently selected and thus user interaction is required. | |
528 | ||
529 | The variable `select-safe-coding-system-accept-default-p', if | |
530 | non-nil, overrides ACCEPT-DEFAULT-P. | |
54b226f7 KH |
531 | |
532 | Kludgy feature: if FROM is a string, the string is the target text, | |
533 | and TO is ignored." | |
b5edd1d1 KH |
534 | (if (and default-coding-system |
535 | (not (listp default-coding-system))) | |
536 | (setq default-coding-system (list default-coding-system))) | |
537 | ||
538 | ;; Change elements of the list to (coding . base-coding). | |
539 | (setq default-coding-system | |
540 | (mapcar (function (lambda (x) (cons x (coding-system-base x)))) | |
541 | default-coding-system)) | |
542 | ||
543 | ;; If buffer-file-coding-system is not nil nor undecided, append it | |
544 | ;; to the defaults. | |
545 | (if buffer-file-coding-system | |
546 | (let ((base (coding-system-base buffer-file-coding-system))) | |
547 | (or (eq base 'undecided) | |
548 | (assq buffer-file-coding-system default-coding-system) | |
549 | (rassq base default-coding-system) | |
e56d7900 | 550 | (setq default-coding-system |
b5edd1d1 KH |
551 | (append default-coding-system |
552 | (list (cons buffer-file-coding-system base))))))) | |
553 | ||
554 | ;; If the most preferred coding system has the property mime-charset, | |
555 | ;; append it to the defaults. | |
556 | (let* ((preferred (symbol-value (car coding-category-list))) | |
557 | (base (coding-system-base preferred))) | |
558 | (and (coding-system-get preferred 'mime-charset) | |
559 | (not (assq preferred default-coding-system)) | |
560 | (not (rassq base default-coding-system)) | |
561 | (setq default-coding-system | |
562 | (append default-coding-system (list (cons preferred base)))))) | |
563 | ||
564 | (if select-safe-coding-system-accept-default-p | |
565 | (setq accept-default-p select-safe-coding-system-accept-default-p)) | |
566 | ||
567 | (let ((codings (find-coding-systems-region from to)) | |
568 | (coding-system nil) | |
569 | (l default-coding-system)) | |
570 | (if (eq (car codings) 'undecided) | |
571 | ;; Any coding system is ok. | |
572 | (setq coding-system t) | |
573 | ;; Try the defaults. | |
574 | (while (and l (not coding-system)) | |
575 | (if (memq (cdr (car l)) codings) | |
576 | (setq coding-system (car (car l))) | |
577 | (setq l (cdr l)))) | |
578 | (if (and coding-system accept-default-p) | |
579 | (or (funcall accept-default-p coding-system) | |
580 | (setq coding-system (list coding-system))))) | |
581 | ||
582 | ;; If all the defaults failed, ask a user. | |
583 | (when (or (not coding-system) (consp coding-system)) | |
34104362 | 584 | ;; At first, change each coding system to the corresponding |
b5edd1d1 KH |
585 | ;; mime-charset name if it is also a coding system. Such a name |
586 | ;; is more friendly to users. | |
587 | (let ((l codings) | |
34104362 KH |
588 | mime-charset) |
589 | (while l | |
590 | (setq mime-charset (coding-system-get (car l) 'mime-charset)) | |
591 | (if (and mime-charset (coding-system-p mime-charset)) | |
592 | (setcar l mime-charset)) | |
593 | (setq l (cdr l)))) | |
594 | ||
b5edd1d1 KH |
595 | ;; Then ask users to select one form CODINGS. |
596 | (unwind-protect | |
597 | (save-window-excursion | |
598 | (with-output-to-temp-buffer "*Warning*" | |
599 | (save-excursion | |
600 | (set-buffer standard-output) | |
2f1fa038 | 601 | (insert "The following default coding systems were tried:\n") |
b5edd1d1 KH |
602 | (let ((pos (point)) |
603 | (fill-prefix " ")) | |
604 | (mapcar (function (lambda (x) (princ " ") (princ (car x)))) | |
605 | default-coding-system) | |
606 | (insert "\n") | |
607 | (fill-region-as-paragraph pos (point))) | |
2f1fa038 EZ |
608 | (insert |
609 | (if (consp coding-system) | |
610 | (concat (format "%s safely encodes the target text,\n" | |
611 | (car coding-system)) | |
612 | "but it is not recommended for encoding text in this context,\n" | |
613 | "e.g., for sending an email message.\n") | |
614 | "However, none of them safely encodes the target text.\n")) | |
b5edd1d1 | 615 | (insert (if (consp coding-system) |
2f1fa038 EZ |
616 | "\nSelect the above, or " |
617 | "\nSelect ") | |
618 | "one of the following safe coding systems:\n") | |
b5edd1d1 KH |
619 | (let ((pos (point)) |
620 | (fill-prefix " ")) | |
621 | (mapcar (function (lambda (x) (princ " ") (princ x))) | |
622 | codings) | |
623 | (insert "\n") | |
624 | (fill-region-as-paragraph pos (point))))) | |
625 | ||
626 | ;; Read a coding system. | |
627 | (if (consp coding-system) | |
628 | (setq codings (cons (car coding-system) codings))) | |
629 | (let* ((safe-names (mapcar (lambda (x) (list (symbol-name x))) | |
630 | codings)) | |
631 | (name (completing-read | |
632 | (format "Select coding system (default %s): " | |
633 | (car codings)) | |
634 | safe-names nil t nil nil | |
635 | (car (car safe-names))))) | |
636 | (setq last-coding-system-specified (intern name) | |
637 | coding-system last-coding-system-specified))) | |
638 | (kill-buffer "*Warning*"))) | |
639 | ||
640 | (if (vectorp (coding-system-eol-type coding-system)) | |
641 | (let ((eol (coding-system-eol-type buffer-file-coding-system))) | |
642 | (if (numberp eol) | |
643 | (setq coding-system | |
644 | (coding-system-change-eol-conversion coding-system eol))))) | |
645 | ||
646 | (if (eq coding-system t) | |
647 | (setq coding-system buffer-file-coding-system)) | |
e56d7900 | 648 | coding-system)) |
54b226f7 KH |
649 | |
650 | (setq select-safe-coding-system-function 'select-safe-coding-system) | |
651 | ||
46babb23 KH |
652 | (defun select-message-coding-system () |
653 | "Return a coding system to encode the outgoing message of the current buffer. | |
654 | It at first tries the first coding system found in these variables | |
655 | in this order: | |
656 | (1) local value of `buffer-file-coding-system' | |
657 | (2) value of `sendmail-coding-system' | |
b5edd1d1 KH |
658 | (3) value of `default-sendmail-coding-system' |
659 | (4) value of `default-buffer-file-coding-system' | |
46babb23 KH |
660 | If the found coding system can't encode the current buffer, |
661 | or none of them are bound to a coding system, | |
48e41165 | 662 | it asks the user to select a proper coding system." |
46babb23 | 663 | (let ((coding (or (and (local-variable-p 'buffer-file-coding-system) |
b5edd1d1 KH |
664 | buffer-file-coding-system) |
665 | sendmail-coding-system | |
666 | default-sendmail-coding-system | |
667 | default-buffer-file-coding-system))) | |
46babb23 KH |
668 | (if (eq coding 'no-conversion) |
669 | ;; We should never use no-conversion for outgoing mails. | |
670 | (setq coding nil)) | |
671 | (if (fboundp select-safe-coding-system-function) | |
672 | (funcall select-safe-coding-system-function | |
b5edd1d1 KH |
673 | (point-min) (point-max) coding |
674 | (function (lambda (x) (coding-system-get x 'mime-charset)))) | |
46babb23 | 675 | coding))) |
4ed46869 | 676 | \f |
03c35c83 | 677 | ;;; Language support stuff. |
4ed46869 | 678 | |
4ed46869 | 679 | (defvar language-info-alist nil |
2c395d56 | 680 | "Alist of language environment definitions. |
4ed46869 KH |
681 | Each element looks like: |
682 | (LANGUAGE-NAME . ((KEY . INFO) ...)) | |
2c395d56 RS |
683 | where LANGUAGE-NAME is a string, the name of the language environment, |
684 | KEY is a symbol denoting the kind of information, and | |
685 | INFO is the data associated with KEY. | |
686 | Meaningful values for KEY include | |
687 | ||
688 | documentation value is documentation of what this language environment | |
689 | is meant for, and how to use it. | |
690 | charset value is a list of the character sets used by this | |
691 | language environment. | |
692 | sample-text value is one line of text, | |
693 | written using those character sets, | |
694 | appropriate for this language environment. | |
695 | setup-function value is a function to call to switch to this | |
696 | language environment. | |
697 | exit-function value is a function to call to leave this | |
698 | language environment. | |
699 | coding-system value is a list of coding systems that are good | |
700 | for saving text written in this language environment. | |
701 | This list serves as suggestions to the user; | |
702 | in effect, as a kind of documentation. | |
703 | coding-priority value is a list of coding systems for this language | |
704 | environment, in order of decreasing priority. | |
705 | This is used to set up the coding system priority | |
45d08cb2 | 706 | list when you switch to this language environment. |
ddb5c041 | 707 | nonascii-translation |
7624ebb9 | 708 | value is a translation table to be set in the |
45d08cb2 | 709 | variable `nonascii-translation-table' in this |
7624ebb9 KH |
710 | language environment, or a character set from |
711 | which `nonascii-insert-offset' is calculated. | |
ddb5c041 KH |
712 | input-method value is a default input method for this language |
713 | environment. | |
7624ebb9 KH |
714 | features value is a list of features requested in this |
715 | language environment. | |
ddb5c041 KH |
716 | |
717 | The following keys take effect only when multibyte characters are | |
718 | globally disabled, i.e. the value of `default-enable-multibyte-characters' | |
719 | is nil. | |
720 | ||
721 | unibyte-syntax value is a library name to load to set | |
e8dd0160 | 722 | unibyte 8-bit character syntaxes for this |
ddb5c041 KH |
723 | language environment. |
724 | ||
725 | unibyte-display value is a coding system to encode characters | |
726 | for the terminal. Characters in the range | |
727 | of 160 to 255 display not as octal escapes, | |
728 | but as non-ASCII characters in this language | |
729 | environment.") | |
2c395d56 RS |
730 | |
731 | (defun get-language-info (lang-env key) | |
732 | "Return information listed under KEY for language environment LANG-ENV. | |
733 | KEY is a symbol denoting the kind of information. | |
734 | For a list of useful values for KEY and their meanings, | |
735 | see `language-info-alist'." | |
736 | (if (symbolp lang-env) | |
737 | (setq lang-env (symbol-name lang-env))) | |
738 | (let ((lang-slot (assoc-ignore-case lang-env language-info-alist))) | |
4ed46869 KH |
739 | (if lang-slot |
740 | (cdr (assq key (cdr lang-slot)))))) | |
741 | ||
f08adf27 | 742 | (defun set-language-info (lang-env key info) |
2c395d56 RS |
743 | "Modify part of the definition of language environment LANG-ENV. |
744 | Specifically, this stores the information INFO under KEY | |
745 | in the definition of this language environment. | |
4ed46869 | 746 | KEY is a symbol denoting the kind of information. |
2c395d56 | 747 | INFO is the value for that information. |
281d03ec | 748 | |
2c395d56 | 749 | For a list of useful values for KEY and their meanings, |
f08adf27 | 750 | see `language-info-alist'." |
2c395d56 RS |
751 | (if (symbolp lang-env) |
752 | (setq lang-env (symbol-name lang-env))) | |
4ed46869 | 753 | (let (lang-slot key-slot) |
2c395d56 | 754 | (setq lang-slot (assoc lang-env language-info-alist)) |
4ed46869 | 755 | (if (null lang-slot) ; If no slot for the language, add it. |
2c395d56 | 756 | (setq lang-slot (list lang-env) |
4ed46869 KH |
757 | language-info-alist (cons lang-slot language-info-alist))) |
758 | (setq key-slot (assq key lang-slot)) | |
759 | (if (null key-slot) ; If no slot for the key, add it. | |
760 | (progn | |
761 | (setq key-slot (list key)) | |
762 | (setcdr lang-slot (cons key-slot (cdr lang-slot))))) | |
cda74479 | 763 | (setcdr key-slot (purecopy info)))) |
4ed46869 | 764 | |
2c395d56 RS |
765 | (defun set-language-info-alist (lang-env alist &optional parents) |
766 | "Store ALIST as the definition of language environment LANG-ENV. | |
767 | ALIST is an alist of KEY and INFO values. See the documentation of | |
98c6d6ed | 768 | `language-info-alist' for the meanings of KEY and INFO. |
54b226f7 | 769 | |
2c395d56 RS |
770 | Optional arg PARENTS is a list of parent menu names; it specifies |
771 | where to put this language environment in the | |
772 | Describe Language Environment and Set Language Environment menus. | |
773 | For example, (\"European\") means to put this language environment | |
774 | in the European submenu in each of those two menus." | |
775 | (if (symbolp lang-env) | |
776 | (setq lang-env (symbol-name lang-env))) | |
54b226f7 KH |
777 | (let ((describe-map describe-language-environment-map) |
778 | (setup-map setup-language-environment-map)) | |
779 | (if parents | |
780 | (let ((l parents) | |
9deed82f | 781 | map parent-symbol parent prompt) |
54b226f7 KH |
782 | (while l |
783 | (if (symbolp (setq parent-symbol (car l))) | |
784 | (setq parent (symbol-name parent)) | |
785 | (setq parent parent-symbol parent-symbol (intern parent))) | |
786 | (setq map (lookup-key describe-map (vector parent-symbol))) | |
9deed82f EZ |
787 | ;; This prompt string is for define-prefix-command, so |
788 | ;; that the map it creates will be suitable for a menu. | |
789 | (or map (setq prompt (format "%s Environment" parent))) | |
54b226f7 KH |
790 | (if (not map) |
791 | (progn | |
792 | (setq map (intern (format "describe-%s-environment-map" | |
793 | (downcase parent)))) | |
9deed82f | 794 | (define-prefix-command map nil prompt) |
54b226f7 KH |
795 | (define-key-after describe-map (vector parent-symbol) |
796 | (cons parent map) t))) | |
797 | (setq describe-map (symbol-value map)) | |
798 | (setq map (lookup-key setup-map (vector parent-symbol))) | |
799 | (if (not map) | |
800 | (progn | |
801 | (setq map (intern (format "setup-%s-environment-map" | |
802 | (downcase parent)))) | |
9deed82f | 803 | (define-prefix-command map nil prompt) |
54b226f7 KH |
804 | (define-key-after setup-map (vector parent-symbol) |
805 | (cons parent map) t))) | |
806 | (setq setup-map (symbol-value map)) | |
807 | (setq l (cdr l))))) | |
f08adf27 RS |
808 | |
809 | ;; Set up menu items for this language env. | |
7624ebb9 | 810 | (let ((doc (assq 'documentation alist))) |
f08adf27 RS |
811 | (when doc |
812 | (define-key-after describe-map (vector (intern lang-env)) | |
7624ebb9 KH |
813 | (cons lang-env 'describe-specified-language-support) t))) |
814 | (define-key-after setup-map (vector (intern lang-env)) | |
815 | (cons lang-env 'setup-specified-language-environment) t) | |
f08adf27 | 816 | |
54b226f7 | 817 | (while alist |
f08adf27 | 818 | (set-language-info lang-env (car (car alist)) (cdr (car alist))) |
54b226f7 | 819 | (setq alist (cdr alist))))) |
4ed46869 | 820 | |
ae302641 | 821 | (defun read-language-name (key prompt &optional default) |
2c395d56 | 822 | "Read a language environment name which has information for KEY. |
ddb5c041 | 823 | If KEY is nil, read any language environment. |
2c395d56 RS |
824 | Prompt with PROMPT. DEFAULT is the default choice of language environment. |
825 | This returns a language environment name as a string." | |
4ed46869 KH |
826 | (let* ((completion-ignore-case t) |
827 | (name (completing-read prompt | |
828 | language-info-alist | |
ddb5c041 KH |
829 | (and key |
830 | (function (lambda (elm) (assq key elm)))) | |
ae302641 | 831 | t nil nil default))) |
13e82c04 | 832 | (if (and (> (length name) 0) |
ddb5c041 KH |
833 | (or (not key) |
834 | (get-language-info name key))) | |
13e82c04 | 835 | name))) |
4ed46869 KH |
836 | \f |
837 | ;;; Multilingual input methods. | |
d0c40faa KH |
838 | (defgroup leim nil |
839 | "LEIM: Libraries of Emacs Input Methods." | |
840 | :group 'mule) | |
4ed46869 | 841 | |
d0b9c3ab KH |
842 | (defconst leim-list-file-name "leim-list.el" |
843 | "Name of LEIM list file. | |
844 | This file contains a list of libraries of Emacs input methods (LEIM) | |
845 | in the format of Lisp expression for registering each input method. | |
846 | Emacs loads this file at startup time.") | |
847 | ||
2e224638 SM |
848 | (defvar leim-list-header (format |
849 | ";;; %s -- list of LEIM (Library of Emacs Input Method) | |
d0b9c3ab KH |
850 | ;; |
851 | ;; This file contains a list of LEIM (Library of Emacs Input Method) | |
e8dd0160 | 852 | ;; in the same directory as this file. Loading this file registers |
d0b9c3ab KH |
853 | ;; the whole input methods in Emacs. |
854 | ;; | |
d33d5fbe | 855 | ;; Each entry has the form: |
d0b9c3ab KH |
856 | ;; (register-input-method |
857 | ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC | |
858 | ;; TITLE DESCRIPTION | |
859 | ;; ARG ...) | |
860 | ;; See the function `register-input-method' for the meanings of arguments. | |
861 | ;; | |
862 | ;; If this directory is included in load-path, Emacs automatically | |
863 | ;; loads this file at startup time. | |
864 | ||
865 | " | |
866 | leim-list-file-name) | |
867 | "Header to be inserted in LEIM list file.") | |
868 | ||
e55e92ee | 869 | (defvar leim-list-entry-regexp "^(register-input-method" |
d0b9c3ab KH |
870 | "Regexp matching head of each entry in LEIM list file. |
871 | See also the variable `leim-list-header'") | |
872 | ||
873 | (defvar update-leim-list-functions | |
874 | '(quail-update-leim-list-file) | |
875 | "List of functions to call to update LEIM list file. | |
876 | Each function is called with one arg, LEIM directory name.") | |
877 | ||
a337fe7f RS |
878 | (defun update-leim-list-file (&rest dirs) |
879 | "Update LEIM list file in directories DIRS." | |
d0b9c3ab KH |
880 | (let ((functions update-leim-list-functions)) |
881 | (while functions | |
a337fe7f | 882 | (apply (car functions) dirs) |
d0b9c3ab KH |
883 | (setq functions (cdr functions))))) |
884 | ||
4ed46869 KH |
885 | (defvar current-input-method nil |
886 | "The current input method for multilingual text. | |
96db204a | 887 | If nil, that means no input method is activated now.") |
4ed46869 KH |
888 | (make-variable-buffer-local 'current-input-method) |
889 | (put 'current-input-method 'permanent-local t) | |
890 | ||
891 | (defvar current-input-method-title nil | |
d0b9c3ab | 892 | "Title string of the current input method shown in mode line.") |
4ed46869 KH |
893 | (make-variable-buffer-local 'current-input-method-title) |
894 | (put 'current-input-method-title 'permanent-local t) | |
895 | ||
b4fba33f | 896 | (defcustom default-input-method nil |
8861c593 | 897 | "*Default input method for multilingual text (a string). |
b4fba33f | 898 | This is the input method activated automatically by the command |
9b10b5a3 | 899 | `toggle-input-method' (\\[toggle-input-method])." |
8861c593 | 900 | :group 'mule |
5806e8a6 GM |
901 | :type '(choice (const nil) string) |
902 | :set-after '(current-language-environment)) | |
b4fba33f | 903 | |
0f835e87 KH |
904 | (put 'input-method-function 'permanent-local t) |
905 | ||
723a427a KH |
906 | (defvar input-method-history nil |
907 | "History list for some commands that read input methods.") | |
908 | (make-variable-buffer-local 'input-method-history) | |
909 | (put 'input-method-history 'permanent-local t) | |
4ed46869 KH |
910 | |
911 | (defvar inactivate-current-input-method-function nil | |
912 | "Function to call for inactivating the current input method. | |
913 | Every input method should set this to an appropriate value when activated. | |
f17ccaee KH |
914 | This function is called with no argument. |
915 | ||
916 | This function should never change the value of `current-input-method'. | |
917 | It is set to nil by the function `inactivate-input-method'.") | |
4ed46869 KH |
918 | (make-variable-buffer-local 'inactivate-current-input-method-function) |
919 | (put 'inactivate-current-input-method-function 'permanent-local t) | |
920 | ||
921 | (defvar describe-current-input-method-function nil | |
922 | "Function to call for describing the current input method. | |
923 | This function is called with no argument.") | |
924 | (make-variable-buffer-local 'describe-current-input-method-function) | |
925 | (put 'describe-current-input-method-function 'permanent-local t) | |
926 | ||
d0b9c3ab | 927 | (defvar input-method-alist nil |
2c395d56 | 928 | "Alist of input method names vs how to use them. |
d0b9c3ab | 929 | Each element has the form: |
2c395d56 RS |
930 | (INPUT-METHOD LANGUAGE-ENV ACTIVATE-FUNC TITLE DESCRIPTION ARGS...) |
931 | See the function `register-input-method' for the meanings of the elements.") | |
932 | ||
f08adf27 | 933 | (defun register-input-method (input-method lang-env &rest args) |
2c395d56 | 934 | "Register INPUT-METHOD as an input method for language environment ENV. |
f08adf27 | 935 | INPUT-METHOD and LANG-ENV are symbols or strings. |
d0b9c3ab | 936 | |
d0b9c3ab | 937 | The remaining arguments are: |
2c395d56 RS |
938 | ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARGS... |
939 | ACTIVATE-FUNC is a function to call to activate this method. | |
940 | TITLE is a string to show in the mode line when this method is active. | |
941 | DESCRIPTION is a string describing this method and what it is good for. | |
942 | The ARGS, if any, are passed as arguments to ACTIVATE-FUNC. | |
205814ee KH |
943 | All told, the arguments to ACTIVATE-FUNC are INPUT-METHOD and the ARGS. |
944 | ||
945 | This function is mainly used in the file \"leim-list.el\" which is | |
946 | created at building time of emacs, registering all quail input methods | |
947 | contained in the emacs distribution. | |
948 | ||
949 | In case you want to register a new quail input method by yourself, be | |
950 | careful to use the same input method title as given in the third | |
951 | parameter of `quail-define-package' (if the values are different, the | |
952 | string specified in this function takes precedence). | |
953 | ||
954 | The commands `describe-input-method' and `list-input-methods' need | |
955 | this duplicated values to show some information about input methods | |
956 | without loading the affected quail packages." | |
f08adf27 RS |
957 | (if (symbolp lang-env) |
958 | (setq lang-env (symbol-name lang-env))) | |
4ef06f75 KH |
959 | (if (symbolp input-method) |
960 | (setq input-method (symbol-name input-method))) | |
f08adf27 | 961 | (let ((info (cons lang-env args)) |
d0b9c3ab KH |
962 | (slot (assoc input-method input-method-alist))) |
963 | (if slot | |
964 | (setcdr slot info) | |
965 | (setq slot (cons input-method info)) | |
966 | (setq input-method-alist (cons slot input-method-alist))))) | |
967 | ||
4d5ac029 | 968 | (defun read-input-method-name (prompt &optional default inhibit-null) |
d0b9c3ab | 969 | "Read a name of input method from a minibuffer prompting with PROMPT. |
4d5ac029 RS |
970 | If DEFAULT is non-nil, use that as the default, |
971 | and substitute it into PROMPT at the first `%s'. | |
4ef06f75 KH |
972 | If INHIBIT-NULL is non-nil, null input signals an error. |
973 | ||
974 | The return value is a string." | |
4d5ac029 RS |
975 | (if default |
976 | (setq prompt (format prompt default))) | |
d0b9c3ab | 977 | (let* ((completion-ignore-case t) |
723a427a KH |
978 | ;; This binding is necessary because input-method-history is |
979 | ;; buffer local. | |
d0b9c3ab | 980 | (input-method (completing-read prompt input-method-alist |
87505a98 RS |
981 | nil t nil 'input-method-history |
982 | default))) | |
bf294e6e KH |
983 | (if (and input-method (symbolp input-method)) |
984 | (setq input-method (symbol-name input-method))) | |
d0b9c3ab KH |
985 | (if (> (length input-method) 0) |
986 | input-method | |
987 | (if inhibit-null | |
43807b77 | 988 | (error "No valid input method is specified"))))) |
d0b9c3ab | 989 | |
d0b9c3ab | 990 | (defun activate-input-method (input-method) |
2c395d56 RS |
991 | "Switch to input method INPUT-METHOD for the current buffer. |
992 | If some other input method is already active, turn it off first. | |
993 | If INPUT-METHOD is nil, deactivate any current input method." | |
305a3cb6 | 994 | (if (and input-method (symbolp input-method)) |
4ef06f75 | 995 | (setq input-method (symbol-name input-method))) |
723a427a KH |
996 | (if (and current-input-method |
997 | (not (string= current-input-method input-method))) | |
305a3cb6 | 998 | (inactivate-input-method)) |
2c395d56 | 999 | (unless (or current-input-method (null input-method)) |
d0b9c3ab KH |
1000 | (let ((slot (assoc input-method input-method-alist))) |
1001 | (if (null slot) | |
723a427a | 1002 | (error "Can't activate input method `%s'" input-method)) |
8efc03e1 KH |
1003 | (let ((func (nth 2 slot))) |
1004 | (if (functionp func) | |
1005 | (apply (nth 2 slot) input-method (nthcdr 5 slot)) | |
1006 | (if (and (consp func) (symbolp (car func)) (symbolp (cdr func))) | |
1007 | (progn | |
1008 | (require (cdr func)) | |
1009 | (apply (car func) input-method (nthcdr 5 slot))) | |
1010 | (error "Can't activate input method `%s'" input-method)))) | |
d0b9c3ab | 1011 | (setq current-input-method input-method) |
723a427a | 1012 | (setq current-input-method-title (nth 3 slot)) |
28885c0e KH |
1013 | (unwind-protect |
1014 | (run-hooks 'input-method-activate-hook) | |
1015 | (force-mode-line-update))))) | |
15b3e511 | 1016 | |
15b3e511 | 1017 | (defun inactivate-input-method () |
f17ccaee | 1018 | "Turn off the current input method." |
723a427a KH |
1019 | (when current-input-method |
1020 | (if input-method-history | |
1021 | (unless (string= current-input-method (car input-method-history)) | |
1022 | (setq input-method-history | |
1023 | (cons current-input-method | |
1024 | (delete current-input-method input-method-history)))) | |
1025 | (setq input-method-history (list current-input-method))) | |
1026 | (unwind-protect | |
1027 | (funcall inactivate-current-input-method-function) | |
15b3e511 | 1028 | (unwind-protect |
723a427a KH |
1029 | (run-hooks 'input-method-inactivate-hook) |
1030 | (setq current-input-method nil | |
28885c0e KH |
1031 | current-input-method-title nil) |
1032 | (force-mode-line-update))))) | |
4ed46869 | 1033 | |
8b784951 | 1034 | (defun set-input-method (input-method) |
2c395d56 RS |
1035 | "Select and activate input method INPUT-METHOD for the current buffer. |
1036 | This also sets the default input method to the one you specify." | |
d0b9c3ab | 1037 | (interactive |
723a427a | 1038 | (let* ((default (or (car input-method-history) default-input-method))) |
42395763 | 1039 | (list (read-input-method-name |
87505a98 | 1040 | (if default "Select input method (default %s): " "Select input method: ") |
42395763 | 1041 | default t)))) |
d0b9c3ab | 1042 | (activate-input-method input-method) |
42395763 | 1043 | (setq default-input-method input-method)) |
4ed46869 KH |
1044 | |
1045 | (defun toggle-input-method (&optional arg) | |
15b3e511 | 1046 | "Turn on or off a multilingual text input method for the current buffer. |
723a427a | 1047 | |
f2979bdb KH |
1048 | With no prefix argument, if an input method is currently activated, |
1049 | turn it off. Otherwise, activate an input method -- the one most | |
1050 | recently used, or the one specified in `default-input-method', or | |
1051 | the one read from the minibuffer. | |
723a427a | 1052 | |
f2979bdb KH |
1053 | With a prefix argument, read an input method from the minibuffer and |
1054 | turn it on. | |
723a427a | 1055 | |
f2979bdb KH |
1056 | The default is to use the most recent input method specified |
1057 | \(not including the currently active input method, if any)." | |
4ed46869 | 1058 | (interactive "P") |
7ddbb5bc RS |
1059 | (if (and current-input-method (not arg)) |
1060 | (inactivate-input-method) | |
1061 | (let ((default (or (car input-method-history) default-input-method))) | |
1062 | (if (and arg default (equal current-input-method default) | |
1063 | (> (length input-method-history) 1)) | |
1064 | (setq default (nth 1 input-method-history))) | |
723a427a KH |
1065 | (activate-input-method |
1066 | (if (or arg (not default)) | |
7ddbb5bc RS |
1067 | (progn |
1068 | (read-input-method-name | |
1069 | (if default "Input method (default %s): " "Input method: " ) | |
1070 | default t)) | |
723a427a KH |
1071 | default)) |
1072 | (or default-input-method | |
1073 | (setq default-input-method current-input-method))))) | |
d0b9c3ab KH |
1074 | |
1075 | (defun describe-input-method (input-method) | |
2c395d56 | 1076 | "Describe input method INPUT-METHOD." |
d0b9c3ab KH |
1077 | (interactive |
1078 | (list (read-input-method-name | |
1079 | "Describe input method (default, current choice): "))) | |
78754934 | 1080 | (if (and input-method (symbolp input-method)) |
4ef06f75 | 1081 | (setq input-method (symbol-name input-method))) |
d0b9c3ab KH |
1082 | (if (null input-method) |
1083 | (describe-current-input-method) | |
464cc130 KH |
1084 | (let ((current current-input-method)) |
1085 | (condition-case nil | |
1086 | (progn | |
1087 | (save-excursion | |
1088 | (activate-input-method input-method) | |
1089 | (describe-current-input-method)) | |
1090 | (activate-input-method current)) | |
1091 | (error | |
1092 | (activate-input-method current) | |
1093 | (with-output-to-temp-buffer "*Help*" | |
1094 | (let ((elt (assoc input-method input-method-alist))) | |
1095 | (princ (format | |
1096 | "Input method: %s (`%s' in mode line) for %s\n %s\n" | |
1097 | input-method (nth 3 elt) (nth 1 elt) (nth 4 elt)))))))))) | |
d0b9c3ab KH |
1098 | |
1099 | (defun describe-current-input-method () | |
96db204a | 1100 | "Describe the input method currently in use." |
4ed46869 KH |
1101 | (if current-input-method |
1102 | (if (and (symbolp describe-current-input-method-function) | |
1103 | (fboundp describe-current-input-method-function)) | |
1104 | (funcall describe-current-input-method-function) | |
1105 | (message "No way to describe the current input method `%s'" | |
f2979bdb | 1106 | current-input-method) |
4ed46869 | 1107 | (ding)) |
d0b9c3ab | 1108 | (error "No input method is activated now"))) |
4ed46869 | 1109 | |
d3459641 | 1110 | (defun read-multilingual-string (prompt &optional initial-input input-method) |
4ed46869 KH |
1111 | "Read a multilingual string from minibuffer, prompting with string PROMPT. |
1112 | The input method selected last time is activated in minibuffer. | |
15b3e511 | 1113 | If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer |
d0b9c3ab KH |
1114 | initially. |
1115 | Optional 3rd argument INPUT-METHOD specifies the input method | |
4ef06f75 KH |
1116 | to be activated instead of the one selected last time. It is a symbol |
1117 | or a string." | |
88d559ec KH |
1118 | (setq input-method |
1119 | (or input-method | |
d3459641 | 1120 | current-input-method |
88d559ec KH |
1121 | default-input-method |
1122 | (read-input-method-name "Input method: " nil t))) | |
3df60841 | 1123 | (if (and input-method (symbolp input-method)) |
4ef06f75 | 1124 | (setq input-method (symbol-name input-method))) |
305a3cb6 KH |
1125 | (let ((prev-input-method current-input-method)) |
1126 | (unwind-protect | |
1127 | (progn | |
1128 | (activate-input-method input-method) | |
1129 | (read-string prompt initial-input nil nil t)) | |
1130 | (activate-input-method prev-input-method)))) | |
4ed46869 KH |
1131 | |
1132 | ;; Variables to control behavior of input methods. All input methods | |
1133 | ;; should react to these variables. | |
1134 | ||
8efc03e1 KH |
1135 | (defcustom input-method-verbose-flag 'default |
1136 | "*A flag to control extra guidance given by input methods. | |
1137 | The value should be nil, t, `complex-only', or `default'. | |
4ed46869 | 1138 | |
cb29dfb6 | 1139 | The extra guidance is done by showing list of available keys in echo |
8efc03e1 KH |
1140 | area. When you use the input method in the minibuffer, the guidance |
1141 | is shown at the bottom short window (split from the existing window). | |
c27c4ed8 | 1142 | |
8efc03e1 KH |
1143 | If the value is t, extra guidance is always given, if the value is |
1144 | nil, extra guidance is always suppressed. | |
1145 | ||
1146 | If the value is `complex-only', only complex input methods such as | |
1147 | `chinese-py' and `japanese' give extra guidance. | |
1148 | ||
1149 | If the value is `default', complex input methods always give extra | |
1150 | guidance, but simple input methods give it only when you are not in | |
1151 | the minibuffer. | |
1152 | ||
1153 | See also the variable `input-method-highlight-flag'." | |
1154 | :type '(choice (const t) (const nil) (const complex-only) (const default)) | |
42395763 RS |
1155 | :group 'mule) |
1156 | ||
1157 | (defcustom input-method-highlight-flag t | |
1158 | "*If this flag is non-nil, input methods highlight partially-entered text. | |
1159 | For instance, while you are in the middle of a Quail input method sequence, | |
1160 | the text inserted so far is temporarily underlined. | |
8efc03e1 KH |
1161 | The underlining goes away when you finish or abort the input method sequence. |
1162 | See also the variable `input-method-verbose-flag'." | |
42395763 RS |
1163 | :type 'boolean |
1164 | :group 'mule) | |
4ed46869 KH |
1165 | |
1166 | (defvar input-method-activate-hook nil | |
f17ccaee KH |
1167 | "Normal hook run just after an input method is activated. |
1168 | ||
1169 | The variable `current-input-method' keeps the input method name | |
1170 | just activated.") | |
4ed46869 KH |
1171 | |
1172 | (defvar input-method-inactivate-hook nil | |
f17ccaee KH |
1173 | "Normal hook run just after an input method is inactivated. |
1174 | ||
1175 | The variable `current-input-method' still keeps the input method name | |
4d0e6a11 | 1176 | just inactivated.") |
4ed46869 KH |
1177 | |
1178 | (defvar input-method-after-insert-chunk-hook nil | |
1179 | "Normal hook run just after an input method insert some chunk of text.") | |
1180 | ||
dccca980 KH |
1181 | (defvar input-method-exit-on-first-char nil |
1182 | "This flag controls a timing when an input method returns. | |
1183 | Usually, the input method does not return while there's a possibility | |
1184 | that it may find a different translation if a user types another key. | |
39e643e2 RS |
1185 | But, it this flag is non-nil, the input method returns as soon as |
1186 | the current key sequence gets long enough to have some valid translation.") | |
dccca980 KH |
1187 | |
1188 | (defvar input-method-use-echo-area nil | |
1189 | "This flag controls how an input method shows an intermediate key sequence. | |
39e643e2 RS |
1190 | Usually, the input method inserts the intermediate key sequence, |
1191 | or candidate translations corresponding to the sequence, | |
1192 | at point in the current buffer. | |
1193 | But, if this flag is non-nil, it displays them in echo area instead.") | |
dccca980 | 1194 | |
723a427a KH |
1195 | (defvar input-method-exit-on-invalid-key nil |
1196 | "This flag controls the behaviour of an input method on invalid key input. | |
1197 | Usually, when a user types a key which doesn't start any character | |
1198 | handled by the input method, the key is handled by turning off the | |
e8dd0160 | 1199 | input method temporarily. After that key, the input method is re-enabled. |
723a427a KH |
1200 | But, if this flag is non-nil, the input method is never back on.") |
1201 | ||
4ed46869 | 1202 | \f |
8efc03e1 KH |
1203 | (defvar set-language-environment-hook nil |
1204 | "Normal hook run after some language environment is set. | |
1205 | ||
1206 | When you set some hook function here, that effect usually should not | |
1207 | be inherited to another language environment. So, you had better set | |
1208 | another function in `exit-language-environment-hook' (which see) to | |
1209 | cancel the effect.") | |
1210 | ||
1211 | (defvar exit-language-environment-hook nil | |
1212 | "Normal hook run after exiting from some language environment. | |
1213 | When this hook is run, the variable `current-language-environment' | |
1214 | is still bound to the language environment being exited. | |
1215 | ||
e8dd0160 | 1216 | This hook is mainly used for canceling the effect of |
8efc03e1 KH |
1217 | `set-language-environment-hook' (which-see).") |
1218 | ||
b0648a00 RS |
1219 | (put 'setup-specified-language-environment 'apropos-inhibit t) |
1220 | ||
15b3e511 | 1221 | (defun setup-specified-language-environment () |
f08adf27 | 1222 | "Switch to a specified language environment." |
15b3e511 | 1223 | (interactive) |
f850d782 | 1224 | (let (language-name) |
15b3e511 KH |
1225 | (if (and (symbolp last-command-event) |
1226 | (or (not (eq last-command-event 'Default)) | |
1227 | (setq last-command-event 'English)) | |
f850d782 RS |
1228 | (setq language-name (symbol-name last-command-event))) |
1229 | (set-language-environment language-name) | |
15b3e511 | 1230 | (error "Bogus calling sequence")))) |
4ed46869 | 1231 | |
8861c593 | 1232 | (defcustom current-language-environment "English" |
94d04df6 | 1233 | "The last language environment specified with `set-language-environment'. |
ebef6d93 KH |
1234 | This variable should be set only with \\[customize], which is equivalent |
1235 | to using the function `set-language-environment'." | |
94d04df6 | 1236 | :link '(custom-manual "(emacs)Language Environments") |
dff1aa24 | 1237 | :set (lambda (symbol value) (set-language-environment value)) |
94d04df6 DL |
1238 | :get (lambda (x) |
1239 | (or (car-safe (assoc-ignore-case | |
1240 | (if (symbolp current-language-environment) | |
1241 | (symbol-name current-language-environment) | |
1242 | current-language-environment) | |
1243 | language-info-alist)) | |
1244 | "English")) | |
1245 | :type (cons 'choice (mapcar (lambda (lang) | |
1246 | (list 'const (car lang))) | |
1247 | language-info-alist)) | |
8861c593 RS |
1248 | :initialize 'custom-initialize-default |
1249 | :group 'mule | |
1250 | :type 'string) | |
f850d782 | 1251 | |
ddb5c041 KH |
1252 | (defun reset-language-environment () |
1253 | "Reset multilingual environment of Emacs to the default status. | |
1254 | ||
1255 | The default status is as follows: | |
1256 | ||
1257 | The default value of buffer-file-coding-system is nil. | |
1258 | The default coding system for process I/O is nil. | |
1259 | The default value for the command `set-terminal-coding-system' is nil. | |
1260 | The default value for the command `set-keyboard-coding-system' is nil. | |
1261 | ||
1262 | The order of priorities of coding categories and the coding system | |
1263 | bound to each category are as follows | |
1264 | coding category coding system | |
1265 | -------------------------------------------------- | |
1266 | coding-category-iso-8-2 iso-latin-1 | |
1267 | coding-category-iso-8-1 iso-latin-1 | |
1268 | coding-category-iso-7-tight iso-2022-jp | |
1269 | coding-category-iso-7 iso-2022-7bit | |
1270 | coding-category-iso-7-else iso-2022-7bit-lock | |
1271 | coding-category-iso-8-else iso-2022-8bit-ss2 | |
1272 | coding-category-emacs-mule emacs-mule | |
1273 | coding-category-raw-text raw-text | |
1274 | coding-category-sjis japanese-shift-jis | |
1275 | coding-category-big5 chinese-big5 | |
1276 | coding-category-ccl nil | |
e8dd0160 | 1277 | coding-category-binary no-conversion |
ddb5c041 KH |
1278 | " |
1279 | (interactive) | |
1280 | ;; This function formerly set default-enable-multibyte-characters to t, | |
1281 | ;; but that is incorrect. It should not alter the unibyte/multibyte choice. | |
1282 | ||
1283 | (setq coding-category-iso-7-tight 'iso-2022-jp | |
1284 | coding-category-iso-7 'iso-2022-7bit | |
1285 | coding-category-iso-8-1 'iso-latin-1 | |
1286 | coding-category-iso-8-2 'iso-latin-1 | |
1287 | coding-category-iso-7-else 'iso-2022-7bit-lock | |
1288 | coding-category-iso-8-else 'iso-2022-8bit-ss2 | |
1289 | coding-category-emacs-mule 'emacs-mule | |
1290 | coding-category-raw-text 'raw-text | |
1291 | coding-category-sjis 'japanese-shift-jis | |
1292 | coding-category-big5 'chinese-big5 | |
9bfcd269 KH |
1293 | coding-category-utf-8 nil |
1294 | coding-category-utf-16-be nil | |
1295 | coding-category-utf-16-le nil | |
ddb5c041 KH |
1296 | coding-category-ccl nil |
1297 | coding-category-binary 'no-conversion) | |
1298 | ||
1299 | (set-coding-priority | |
1300 | '(coding-category-iso-8-1 | |
1301 | coding-category-iso-8-2 | |
1302 | coding-category-iso-7-tight | |
1303 | coding-category-iso-7 | |
1304 | coding-category-iso-7-else | |
1305 | coding-category-iso-8-else | |
1306 | coding-category-emacs-mule | |
1307 | coding-category-raw-text | |
1308 | coding-category-sjis | |
1309 | coding-category-big5 | |
1310 | coding-category-ccl | |
9bfcd269 KH |
1311 | coding-category-binary |
1312 | coding-category-utf-16-be | |
1313 | coding-category-utf-16-le | |
1314 | coding-category-utf-8)) | |
ddb5c041 | 1315 | |
91693d18 KH |
1316 | (update-coding-systems-internal) |
1317 | ||
ddb5c041 | 1318 | (set-default-coding-systems nil) |
b5edd1d1 | 1319 | (setq default-sendmail-coding-system 'iso-latin-1) |
0c47a7c8 | 1320 | (setq default-process-coding-system '(undecided . iso-latin-1)) |
b5edd1d1 | 1321 | |
ddb5c041 KH |
1322 | ;; Don't alter the terminal and keyboard coding systems here. |
1323 | ;; The terminal still supports the same coding system | |
1324 | ;; that it supported a minute ago. | |
1325 | ;;; (set-terminal-coding-system-internal nil) | |
1326 | ;;; (set-keyboard-coding-system-internal nil) | |
1327 | ||
1328 | (setq nonascii-translation-table nil | |
1329 | nonascii-insert-offset 0)) | |
1330 | ||
0c47a7c8 KH |
1331 | (reset-language-environment) |
1332 | ||
40c81f74 PE |
1333 | (defun set-display-table-and-terminal-coding-system (language-name) |
1334 | "Set up the display table and terminal coding system for LANGUAGE-NAME." | |
1335 | (let ((coding (get-language-info language-name 'unibyte-display))) | |
1336 | (if coding | |
1337 | (standard-display-european-internal) | |
1338 | (standard-display-default (if (eq window-system 'pc) 128 160) 255) | |
1339 | (aset standard-display-table 146 nil)) | |
1340 | (or (eq window-system 'pc) | |
1341 | (set-terminal-coding-system coding)))) | |
1342 | ||
166246f7 | 1343 | (defun set-language-environment (language-name) |
6c05d680 RS |
1344 | "Set up multi-lingual environment for using LANGUAGE-NAME. |
1345 | This sets the coding system priority and the default input method | |
8861c593 RS |
1346 | and sometimes other things. LANGUAGE-NAME should be a string |
1347 | which is the name of a language environment. For example, \"Latin-1\" | |
1348 | specifies the character set for the major languages of Western Europe." | |
8efc03e1 | 1349 | (interactive (list (read-language-name |
ddb5c041 | 1350 | nil |
8efc03e1 | 1351 | "Set language environment (default, English): "))) |
4ef06f75 KH |
1352 | (if language-name |
1353 | (if (symbolp language-name) | |
1354 | (setq language-name (symbol-name language-name))) | |
1355 | (setq language-name "English")) | |
ddb5c041 | 1356 | (or (assoc-ignore-case language-name language-info-alist) |
f850d782 | 1357 | (error "Language environment not defined: %S" language-name)) |
8efc03e1 KH |
1358 | (if current-language-environment |
1359 | (let ((func (get-language-info current-language-environment | |
1360 | 'exit-function))) | |
e63645c2 KH |
1361 | (run-hooks 'exit-language-environment-hook) |
1362 | (if (fboundp func) (funcall func)))) | |
03c35c83 EZ |
1363 | (let ((default-eol-type (coding-system-eol-type |
1364 | default-buffer-file-coding-system))) | |
1365 | (reset-language-environment) | |
ddb5c041 | 1366 | |
03c35c83 EZ |
1367 | (setq current-language-environment language-name) |
1368 | (set-language-environment-coding-systems language-name default-eol-type)) | |
ddb5c041 KH |
1369 | (let ((input-method (get-language-info language-name 'input-method))) |
1370 | (when input-method | |
1371 | (setq default-input-method input-method) | |
1372 | (if input-method-history | |
1373 | (setq input-method-history | |
1374 | (cons input-method | |
1375 | (delete input-method input-method-history)))))) | |
ec241f58 EZ |
1376 | (let ((nonascii (get-language-info language-name 'nonascii-translation)) |
1377 | (dos-table | |
4e2ac2d9 EZ |
1378 | (if (eq window-system 'pc) |
1379 | (intern | |
d9c0a50e | 1380 | (format "cp%d-nonascii-translation-table" dos-codepage))))) |
03c35c83 EZ |
1381 | (cond |
1382 | ((char-table-p nonascii) | |
1383 | (setq nonascii-translation-table nonascii)) | |
ec241f58 | 1384 | ((and (eq window-system 'pc) (boundp dos-table)) |
03c35c83 EZ |
1385 | ;; DOS terminals' default is to use a special non-ASCII translation |
1386 | ;; table as appropriate for the installed codepage. | |
ec241f58 | 1387 | (setq nonascii-translation-table (symbol-value dos-table))) |
03c35c83 EZ |
1388 | ((charsetp nonascii) |
1389 | (setq nonascii-insert-offset (- (make-char nonascii) 128))))) | |
ddb5c041 | 1390 | |
63283a8f | 1391 | ;; Unibyte setups if necessary. |
ddb5c041 | 1392 | (unless default-enable-multibyte-characters |
63283a8f | 1393 | ;; Syntax and case table. |
ddb5c041 KH |
1394 | (let ((syntax (get-language-info language-name 'unibyte-syntax))) |
1395 | (if syntax | |
1396 | (let ((set-case-syntax-set-multibyte nil)) | |
63283a8f KH |
1397 | (load syntax nil t)) |
1398 | ;; No information for syntax and case. Reset to the defaults. | |
1399 | (let ((syntax-table (standard-syntax-table)) | |
1400 | (case-table (standard-case-table)) | |
03c35c83 | 1401 | (ch (if (eq window-system 'pc) 128 160))) |
63283a8f KH |
1402 | (while (< ch 256) |
1403 | (modify-syntax-entry ch " " syntax-table) | |
1404 | (aset case-table ch ch) | |
1405 | (setq ch (1+ ch))) | |
1406 | (set-char-table-extra-slot case-table 0 nil) | |
1407 | (set-char-table-extra-slot case-table 1 nil) | |
1408 | (set-char-table-extra-slot case-table 2 nil)) | |
1409 | (set-standard-case-table (standard-case-table)) | |
1410 | (let ((list (buffer-list))) | |
1411 | (while list | |
1412 | (with-current-buffer (car list) | |
1413 | (set-case-table (standard-case-table))) | |
1414 | (setq list (cdr list)))))) | |
40c81f74 | 1415 | (set-display-table-and-terminal-coding-system language-name)) |
ddb5c041 KH |
1416 | |
1417 | (let ((required-features (get-language-info language-name 'features))) | |
1418 | (while required-features | |
1419 | (require (car required-features)) | |
1420 | (setq required-features (cdr required-features)))) | |
1421 | (let ((func (get-language-info language-name 'setup-function))) | |
1422 | (if (fboundp func) | |
1423 | (funcall func))) | |
8efc03e1 | 1424 | (run-hooks 'set-language-environment-hook) |
f850d782 | 1425 | (force-mode-line-update t)) |
4ed46869 | 1426 | |
51a8fc1d RS |
1427 | (defun standard-display-european-internal () |
1428 | ;; Actually set up direct output of non-ASCII characters. | |
03c35c83 EZ |
1429 | (standard-display-8bit (if (eq window-system 'pc) 128 160) 255) |
1430 | ;; Unibyte Emacs on MS-DOS wants to display all 8-bit characters with | |
1431 | ;; the native font, and codes 160 and 146 stand for something very | |
1432 | ;; different there. | |
1433 | (or (and (eq window-system 'pc) (not default-enable-multibyte-characters)) | |
1434 | (progn | |
1435 | ;; Make non-line-break space display as a plain space. | |
1436 | ;; Most X fonts do the wrong thing for code 160. | |
1437 | (aset standard-display-table 160 [32]) | |
1438 | ;; Most Windows programs send out apostrophe's as \222. Most X fonts | |
1439 | ;; don't contain a character at that position. Map it to the ASCII | |
1440 | ;; apostrophe. | |
1441 | (aset standard-display-table 146 [39])))) | |
1442 | ||
1443 | (defun set-language-environment-coding-systems (language-name | |
1444 | &optional eol-type) | |
1445 | "Do various coding system setups for language environment LANGUAGE-NAME. | |
1446 | ||
1447 | The optional arg EOL-TYPE specifies the eol-type of the default value | |
1448 | of buffer-file-coding-system set by this function." | |
54b226f7 KH |
1449 | (let* ((priority (get-language-info language-name 'coding-priority)) |
1450 | (default-coding (car priority))) | |
1451 | (if priority | |
1452 | (let ((categories (mapcar 'coding-system-category priority))) | |
03c35c83 EZ |
1453 | (set-default-coding-systems |
1454 | (if (memq eol-type '(0 1 2 unix dos mac)) | |
1455 | (coding-system-change-eol-conversion default-coding eol-type) | |
1456 | default-coding)) | |
46babb23 | 1457 | (setq default-sendmail-coding-system default-coding) |
54b226f7 KH |
1458 | (set-coding-priority categories) |
1459 | (while priority | |
1460 | (set (car categories) (car priority)) | |
1461 | (setq priority (cdr priority) categories (cdr categories))) | |
45d08cb2 | 1462 | (update-coding-systems-internal))))) |
54b226f7 | 1463 | |
4ed46869 KH |
1464 | ;; Print all arguments with `princ', then print "\n". |
1465 | (defsubst princ-list (&rest args) | |
1466 | (while args (princ (car args)) (setq args (cdr args))) | |
1467 | (princ "\n")) | |
1468 | ||
b0648a00 RS |
1469 | (put 'describe-specified-language-support 'apropos-inhibit t) |
1470 | ||
48082651 | 1471 | ;; Print a language specific information such as input methods, |
13e82c04 | 1472 | ;; charsets, and coding systems. This function is intended to be |
48082651 | 1473 | ;; called from the menu: |
281d03ec | 1474 | ;; [menu-bar mule describe-language-environment LANGUAGE] |
48082651 KH |
1475 | ;; and should not run it by `M-x describe-current-input-method-function'. |
1476 | (defun describe-specified-language-support () | |
96db204a | 1477 | "Describe how Emacs supports the specified language environment." |
48082651 | 1478 | (interactive) |
281d03ec | 1479 | (let (language-name) |
48082651 | 1480 | (if (not (and (symbolp last-command-event) |
cda74479 DL |
1481 | (or (not (eq last-command-event 'Default)) |
1482 | (setq last-command-event 'English)) | |
281d03ec | 1483 | (setq language-name (symbol-name last-command-event)))) |
48082651 | 1484 | (error "Bogus calling sequence")) |
281d03ec RS |
1485 | (describe-language-environment language-name))) |
1486 | ||
1487 | (defun describe-language-environment (language-name) | |
1488 | "Describe how Emacs supports language environment LANGUAGE-NAME." | |
78754934 KH |
1489 | (interactive |
1490 | (list (read-language-name | |
1491 | 'documentation | |
8adfa8be | 1492 | "Describe language environment (default, current choice): "))) |
f850d782 RS |
1493 | (if (null language-name) |
1494 | (setq language-name current-language-environment)) | |
281d03ec RS |
1495 | (if (or (null language-name) |
1496 | (null (get-language-info language-name 'documentation))) | |
1497 | (error "No documentation for the specified language")) | |
4ef06f75 KH |
1498 | (if (symbolp language-name) |
1499 | (setq language-name (symbol-name language-name))) | |
464cc130 KH |
1500 | (let ((doc (get-language-info language-name 'documentation)) |
1501 | pos) | |
48082651 | 1502 | (with-output-to-temp-buffer "*Help*" |
464cc130 KH |
1503 | (save-excursion |
1504 | (set-buffer standard-output) | |
1505 | (insert language-name " language environment\n\n") | |
1506 | (if (stringp doc) | |
1507 | (insert doc "\n\n")) | |
1508 | (let ((str (get-language-info language-name 'sample-text))) | |
1509 | (if (stringp str) | |
1510 | (insert "Sample text:\n " str "\n\n"))) | |
1511 | (let ((input-method (get-language-info language-name 'input-method)) | |
1512 | (l (copy-sequence input-method-alist))) | |
1513 | (insert "Input methods") | |
1514 | (when input-method | |
1515 | (insert " (default, " input-method ")") | |
1516 | (setq input-method (assoc input-method input-method-alist)) | |
1517 | (setq l (cons input-method (delete input-method l)))) | |
1518 | (insert ":\n") | |
48082651 | 1519 | (while l |
464cc130 KH |
1520 | (when (string= language-name (nth 1 (car l))) |
1521 | (insert " " (car (car l))) | |
1522 | (search-backward (car (car l))) | |
1523 | (help-xref-button 0 #'describe-input-method (car (car l)) | |
1524 | "mouse-2, RET: describe this input method") | |
1525 | (goto-char (point-max)) | |
1526 | (insert " (\"" (nth 3 (car l)) "\" in mode line)\n")) | |
1527 | (setq l (cdr l))) | |
1528 | (insert "\n")) | |
1529 | (insert "Character sets:\n") | |
1530 | (let ((l (get-language-info language-name 'charset))) | |
1531 | (if (null l) | |
1532 | (insert " nothing specific to " language-name "\n") | |
1533 | (while l | |
1534 | (insert " " (symbol-name (car l))) | |
1535 | (search-backward (symbol-name (car l))) | |
1536 | (help-xref-button 0 #'describe-character-set (car l) | |
1537 | "mouse-2, RET: describe this character set") | |
1538 | (goto-char (point-max)) | |
1539 | (insert ": " (charset-description (car l)) "\n") | |
1540 | (setq l (cdr l))))) | |
1541 | (insert "\n") | |
1542 | (insert "Coding systems:\n") | |
1543 | (let ((l (get-language-info language-name 'coding-system))) | |
1544 | (if (null l) | |
1545 | (insert " nothing specific to " language-name "\n") | |
1546 | (while l | |
1547 | (insert " " (symbol-name (car l))) | |
1548 | (search-backward (symbol-name (car l))) | |
1549 | (help-xref-button 0 #'describe-coding-system (car l) | |
1550 | "mouse-2, RET: describe this coding system") | |
1551 | (goto-char (point-max)) | |
1552 | (insert " (`" | |
1553 | (coding-system-mnemonic (car l)) | |
1554 | "' in mode line):\n\t" | |
1555 | (coding-system-doc-string (car l)) | |
1556 | "\n") | |
1557 | (let ((aliases (coding-system-get (car l) | |
1558 | 'alias-coding-systems))) | |
1559 | (when aliases | |
1560 | (insert "\t(alias:") | |
1561 | (while aliases | |
1562 | (insert " " (symbol-name (car aliases))) | |
1563 | (setq aliases (cdr aliases))) | |
1564 | (insert ")\n"))) | |
1565 | (setq l (cdr l))))) | |
1566 | (help-setup-xref (list #'describe-language-environment language-name) | |
1567 | (interactive-p)))))) | |
4ed46869 | 1568 | \f |
40c81f74 PE |
1569 | ;;; Locales. |
1570 | ||
0d7c5bb9 DL |
1571 | (defvar locale-translation-file-name nil |
1572 | "File name for the system's file of locale-name aliases, or nil if none.") | |
40c81f74 PE |
1573 | |
1574 | (defvar locale-language-names | |
1575 | '( | |
1576 | ;; UTF-8 is not yet implemented. | |
1577 | ;; Put this first, so that e.g. "ko.UTF-8" does not match "ko" below. | |
1578 | (".*[._]utf" . nil) | |
1579 | ||
1580 | ;; Locale names of the form LANGUAGE[_TERRITORY][.CODESET][@MODIFIER] | |
1581 | ;; as specified in the Single Unix Spec, Version 2. | |
1582 | ;; LANGUAGE is a language code taken from ISO 639:1988 (E/F) | |
1583 | ;; with additions from ISO 639/RA Newsletter No.1/1989; | |
1584 | ;; see Internet RFC 2165 (1997-06). | |
1585 | ;; TERRITORY is a country code taken from ISO 3166. | |
1586 | ;; CODESET and MODIFIER are implementation-dependent. | |
1587 | ;; | |
1588 | ; aa Afar | |
1589 | ; ab Abkhazian | |
6ececc4d | 1590 | ("af" . "Latin-1") ; Afrikaans |
40c81f74 PE |
1591 | ("am" . "Ethiopic") ; Amharic |
1592 | ; ar Arabic | |
1593 | ; as Assamese | |
1594 | ; ay Aymara | |
1595 | ; az Azerbaijani | |
1596 | ; ba Bashkir | |
6ececc4d PE |
1597 | ("be" . "Latin-5") ; Byelorussian |
1598 | ("bg" . "Latin-5") ; Bulgarian | |
40c81f74 PE |
1599 | ; bh Bihari |
1600 | ; bi Bislama | |
1601 | ; bn Bengali, Bangla | |
1602 | ("bo" . "Tibetan") | |
1603 | ("br" . "Latin-1") ; Breton | |
1604 | ("ca" . "Latin-1") ; Catalan | |
1605 | ; co Corsican | |
1606 | ("cs" . "Czech") | |
6ececc4d | 1607 | ("cy" . "Latin-8") ; Welsh |
40c81f74 PE |
1608 | ("da" . "Latin-1") ; Danish |
1609 | ("de" . "German") | |
1610 | ; dz Bhutani | |
1611 | ("el" . "Greek") | |
6ececc4d PE |
1612 | ;; Users who specify "en" explicitly typically want Latin-1, not ASCII. |
1613 | ("en" . "Latin-1") ; English | |
40c81f74 PE |
1614 | ("eo" . "Latin-3") ; Esperanto |
1615 | ("es" . "Latin-1") ; Spanish | |
1616 | ("et" . "Latin-4") ; Estonian | |
1617 | ("eu" . "Latin-1") ; Basque | |
1618 | ; fa Persian | |
1619 | ("fi" . "Latin-1") ; Finnish | |
1620 | ; fj Fiji | |
1621 | ("fo" . "Latin-1") ; Faroese | |
1622 | ("fr" . "Latin-1") ; French | |
1623 | ("fy" . "Latin-1") ; Frisian | |
6ececc4d PE |
1624 | ("ga" . "Latin-1") ; Irish Gaelic (new orthography) |
1625 | ("gd" . "Latin-1") ; Scots Gaelic | |
1626 | ("gl" . "Latin-1") ; Galician | |
40c81f74 PE |
1627 | ; gn Guarani |
1628 | ; gu Gujarati | |
1629 | ; ha Hausa | |
1630 | ("he" . "Hebrew") | |
1631 | ("hi" . "Devanagari") ; Hindi | |
1632 | ("hr" . "Latin-2") ; Croatian | |
1633 | ("hu" . "Latin-2") ; Hungarian | |
1634 | ; hy Armenian | |
1635 | ; ia Interlingua | |
1636 | ("id" . "Latin-1") ; Indonesian | |
1637 | ; ie Interlingue | |
1638 | ; ik Inupiak | |
1639 | ("is" . "Latin-1") ; Icelandic | |
1640 | ("it" . "Latin-1") ; Italian | |
1641 | ; iu Inuktitut | |
1642 | ("ja" . "Japanese") | |
1643 | ; jw Javanese | |
1644 | ; ka Georgian | |
1645 | ; kk Kazakh | |
6ececc4d | 1646 | ("kl" . "Latin-1") ; Greenlandic |
40c81f74 PE |
1647 | ; km Cambodian |
1648 | ; kn Kannada | |
1649 | ("ko" . "Korean") | |
1650 | ; ks Kashmiri | |
1651 | ; ku Kurdish | |
1652 | ; ky Kirghiz | |
1653 | ("la" . "Latin-1") ; Latin | |
1654 | ; ln Lingala | |
1655 | ("lo" . "Lao") ; Laothian | |
1656 | ("lt" . "Latin-4") ; Lithuanian | |
1657 | ("lv" . "Latin-4") ; Latvian, Lettish | |
1658 | ; mg Malagasy | |
1659 | ; mi Maori | |
6ececc4d | 1660 | ("mk" . "Latin-5") ; Macedonian |
40c81f74 PE |
1661 | ; ml Malayalam |
1662 | ; mn Mongolian | |
1663 | ; mo Moldavian | |
1664 | ("mr" . "Devanagari") ; Marathi | |
1665 | ; ms Malay | |
1666 | ("mt" . "Latin-3") ; Maltese | |
1667 | ; my Burmese | |
1668 | ; na Nauru | |
1669 | ("ne" . "Devanagari") ; Nepali | |
1670 | ("nl" . "Latin-1") ; Dutch | |
1671 | ("no" . "Latin-1") ; Norwegian | |
1672 | ; oc Occitan | |
1673 | ; om (Afan) Oromo | |
1674 | ; or Oriya | |
1675 | ; pa Punjabi | |
1676 | ("pl" . "Latin-2") ; Polish | |
1677 | ; ps Pashto, Pushto | |
1678 | ("pt" . "Latin-1") ; Portuguese | |
1679 | ; qu Quechua | |
6ececc4d | 1680 | ("rm" . "Latin-1") ; Rhaeto-Romanic |
40c81f74 PE |
1681 | ; rn Kirundi |
1682 | ("ro" . "Romanian") | |
1683 | ("ru.*[_.]koi8" . "Cyrillic-KOI8") ; Russian | |
6ececc4d | 1684 | ("ru" . "Latin-5") ; Russian |
40c81f74 PE |
1685 | ; rw Kinyarwanda |
1686 | ("sa" . "Devanagari") ; Sanskrit | |
1687 | ; sd Sindhi | |
1688 | ; sg Sangho | |
1689 | ("sh" . "Latin-2") ; Serbo-Croatian | |
1690 | ; si Sinhalese | |
1691 | ("sk" . "Slovak") | |
1692 | ("sl" . "Slovenian") | |
1693 | ; sm Samoan | |
1694 | ; sn Shona | |
1695 | ; so Somali | |
6ececc4d | 1696 | ("sq" . "Latin-1") ; Albanian |
40c81f74 PE |
1697 | ("sr" . "Latin-2") ; Serbian (Latin alphabet) |
1698 | ; ss Siswati | |
1699 | ; st Sesotho | |
1700 | ; su Sundanese | |
1701 | ("sv" . "Latin-1") ; Swedish | |
1702 | ("sw" . "Latin-1") ; Swahili | |
1703 | ; ta Tamil | |
1704 | ; te Telugu | |
1705 | ; tg Tajik | |
1706 | ("th" . "Thai") | |
1707 | ; ti Tigrinya | |
1708 | ; tk Turkmen | |
6ececc4d | 1709 | ("tl" . "Latin-1") ; Tagalog |
40c81f74 PE |
1710 | ; tn Setswana |
1711 | ; to Tonga | |
1712 | ("tr" . "Latin-5") ; Turkish | |
1713 | ; ts Tsonga | |
1714 | ; tt Tatar | |
1715 | ; tw Twi | |
1716 | ; ug Uighur | |
6ececc4d | 1717 | ("uk" . "Latin-5") ; Ukrainian |
40c81f74 PE |
1718 | ; ur Urdu |
1719 | ; uz Uzbek | |
1720 | ("vi" . "Vietnamese") | |
1721 | ; vo Volapuk | |
1722 | ; wo Wolof | |
1723 | ; xh Xhosa | |
1724 | ; yi Yiddish | |
1725 | ; yo Yoruba | |
1726 | ; za Zhuang | |
1727 | ("zh.*[._]big5" . "Chinese-BIG5") | |
1728 | ("zh.*[._]gbk" . nil) ; Solaris 2.7; has gbk-0 as well as GB 2312.1980-0 | |
1729 | ("zh_tw" . "Chinese-CNS") | |
1730 | ("zh" . "Chinese-GB") | |
1731 | ; zu Zulu | |
1732 | ||
1733 | ;; ISO standard locales | |
1734 | ("c$" . "ASCII") | |
1735 | ("posix$" . "ASCII") | |
1736 | ||
40c81f74 PE |
1737 | ;; The "IPA" Emacs language environment does not correspond |
1738 | ;; to any ISO 639 code, so let it stand for itself. | |
1739 | ("ipa$" . "IPA") | |
1740 | ||
1741 | ;; Nonstandard or obsolete language codes | |
1742 | ("cz" . "Czech") ; e.g. Solaris 2.6 | |
1743 | ("ee" . "Latin-4") ; Estonian, e.g. X11R6.4 | |
1744 | ("iw" . "Hebrew") ; e.g. X11R6.4 | |
6ececc4d | 1745 | ("sp" . "Latin-5") ; Serbian (Cyrillic alphabet), e.g. X11R6.4 |
40c81f74 PE |
1746 | ("su" . "Latin-1") ; Finnish, e.g. Solaris 2.6 |
1747 | ) | |
1748 | "List of pairs of locale regexps and language names. | |
6ececc4d PE |
1749 | The first element whose locale regexp matches the start of a downcased locale |
1750 | specifies the language name corresponding to that locale. | |
40c81f74 PE |
1751 | If the language name is nil, there is no corresponding language environment.") |
1752 | ||
6ececc4d PE |
1753 | (defvar locale-charset-language-names |
1754 | '((".*8859[-_]?1\\>" . "Latin-1") | |
1755 | (".*8859[-_]?2\\>" . "Latin-2") | |
1756 | (".*8859[-_]?3\\>" . "Latin-3") | |
1757 | (".*8859[-_]?4\\>" . "Latin-4") | |
1758 | (".*8859[-_]?9\\>" . "Latin-5") | |
1759 | (".*8859[-_]?14\\>" . "Latin-8") | |
1760 | (".*8859[-_]?15\\>" . "Latin-9") | |
1761 | ) | |
1762 | "List of pairs of locale regexps and charset language names. | |
1763 | The first element whose locale regexp matches the start of a downcased locale | |
1764 | specifies the language name whose charsets corresponds to that locale. | |
1765 | This language name is used if its charsets disagree with the charsets of | |
1766 | the language name that would otherwise be used for this locale.") | |
1767 | ||
40c81f74 PE |
1768 | (defvar locale-preferred-coding-systems |
1769 | '(("ja.*[._]euc" . japanese-iso-8bit) | |
1770 | ("ja.*[._]jis7" . iso-2022-jp) | |
1771 | ("ja.*[._]pck" . japanese-shift-jis) | |
1772 | ("ja.*[._]sjis" . japanese-shift-jis) | |
40c81f74 | 1773 | ) |
6ececc4d PE |
1774 | "List of pairs of locale regexps and preferred coding systems. |
1775 | The first element whose locale regexp matches the start of a downcased locale | |
1776 | specifies the coding system to prefer when using that locale.") | |
40c81f74 PE |
1777 | |
1778 | (defun locale-name-match (key alist) | |
1779 | "Search for KEY in ALIST, which should be a list of regexp-value pairs. | |
1780 | Return the value corresponding to the first regexp that matches the | |
1781 | start of KEY, or nil if there is no match." | |
1782 | (let (element) | |
1783 | (while (and alist (not element)) | |
1784 | (if (string-match (concat "^\\(" (car (car alist)) "\\)") key) | |
1785 | (setq element (car alist))) | |
1786 | (setq alist (cdr alist))) | |
1787 | (cdr element))) | |
1788 | ||
1789 | (defun set-locale-environment (locale-name) | |
1790 | "Set up multi-lingual environment for using LOCALE-NAME. | |
1791 | This sets the coding system priority and the default input method | |
1792 | and sometimes other things. LOCALE-NAME should be a string | |
1793 | which is the name of a locale supported by the system; | |
1794 | often it is of the form xx_XX.CODE, where xx is a language, | |
1795 | XX is a country, and CODE specifies a character set and coding system. | |
1796 | For example, the locale name \"ja_JP.EUC\" might name a locale | |
1797 | for Japanese in Japan using the `japanese-iso-8bit' coding-system. | |
1798 | ||
1799 | If LOCALE-NAME is nil, its value is taken from the environment. | |
1800 | ||
1801 | The locale names supported by your system can typically be found in a | |
1802 | directory named `/usr/share/locale' or `/usr/lib/locale'." | |
1803 | ||
0d7c5bb9 DL |
1804 | ;; Do this at runtime for the sake of binaries possibly transported |
1805 | ;; to a system without X. | |
1806 | (setq locale-translation-file-name | |
1807 | (let ((files | |
1808 | '("/usr/lib/X11/locale/locale.alias" ; e.g. X11R6.4 | |
1809 | "/usr/X11R6/lib/X11/locale/locale.alias" ; e.g. RedHat 4.2 | |
1810 | "/usr/openwin/lib/locale/locale.alias" ; e.g. Solaris 2.6 | |
1811 | ;; | |
1812 | ;; The following name appears after the X-related names above, | |
1813 | ;; since the X-related names are what X actually uses. | |
1814 | "/usr/share/locale/locale.alias" ; GNU/Linux sans X | |
1815 | ))) | |
1816 | (while (and files (not (file-exists-p (car files)))) | |
1817 | (setq files (cdr files))) | |
1818 | (car files))) | |
1819 | ||
40c81f74 PE |
1820 | (unless locale-name |
1821 | ;; Use the first of these three environment variables | |
1822 | ;; that has a nonempty value. | |
1823 | (let ((vars '("LC_ALL" "LC_CTYPE" "LANG"))) | |
1824 | (while (and vars (not (setq locale-name (getenv (car vars))))) | |
1825 | (setq vars (cdr vars))))) | |
1826 | ||
1827 | (when locale-name | |
1828 | ||
1829 | ;; Translate "swedish" into "sv_SE.ISO8859-1", and so on, | |
1830 | ;; using the translation file that many systems have. | |
1831 | (when locale-translation-file-name | |
1832 | (with-temp-buffer | |
1833 | (insert-file-contents locale-translation-file-name) | |
1834 | (when (re-search-forward | |
1835 | (concat "^" (regexp-quote locale-name) ":?[ \t]+") nil t) | |
1836 | (setq locale-name (buffer-substring (point) (line-end-position)))))) | |
1837 | ||
1838 | (setq locale-name (downcase locale-name)) | |
1839 | ||
6ececc4d PE |
1840 | (let ((language-name |
1841 | (locale-name-match locale-name locale-language-names)) | |
1842 | (charset-language-name | |
1843 | (locale-name-match locale-name locale-charset-language-names)) | |
1844 | (coding-system | |
1845 | (locale-name-match locale-name locale-preferred-coding-systems))) | |
1846 | ||
1847 | (if (and charset-language-name | |
1848 | (not | |
1849 | (equal (get-language-info language-name 'charset) | |
1850 | (get-language-info charset-language-name 'charset)))) | |
1851 | (setq language-name charset-language-name)) | |
1852 | ||
40c81f74 PE |
1853 | (when language-name |
1854 | ||
1855 | ;; Set up for this character set. This is now the right way | |
1856 | ;; to do it for both unibyte and multibyte modes. | |
1857 | (set-language-environment language-name) | |
1858 | ||
1859 | ;; If default-enable-multibyte-characters is nil, | |
1860 | ;; we are using single-byte characters, | |
1861 | ;; so the display table and terminal coding system are irrelevant. | |
1862 | (when default-enable-multibyte-characters | |
1863 | (set-display-table-and-terminal-coding-system language-name)) | |
1864 | ||
1865 | (setq locale-coding-system | |
1866 | (car (get-language-info language-name 'coding-priority)))) | |
1867 | ||
1868 | (when coding-system | |
1869 | (prefer-coding-system coding-system) | |
1870 | (setq locale-coding-system coding-system))))) | |
1871 | \f | |
4ed46869 KH |
1872 | ;;; Charset property |
1873 | ||
251d4f4b | 1874 | (defun get-charset-property (charset propname) |
4ed46869 KH |
1875 | "Return the value of CHARSET's PROPNAME property. |
1876 | This is the last value stored with | |
96db204a | 1877 | (put-charset-property CHARSET PROPNAME VALUE)." |
251d4f4b KH |
1878 | (and (not (eq charset 'composition)) |
1879 | (plist-get (charset-plist charset) propname))) | |
4ed46869 | 1880 | |
251d4f4b | 1881 | (defun put-charset-property (charset propname value) |
4ed46869 KH |
1882 | "Store CHARSETS's PROPNAME property with value VALUE. |
1883 | It can be retrieved with `(get-charset-property CHARSET PROPNAME)'." | |
1300d43f KH |
1884 | (or (eq charset 'composition) |
1885 | (set-charset-plist charset | |
1886 | (plist-put (charset-plist charset) propname value)))) | |
4ed46869 KH |
1887 | |
1888 | ;;; Character code property | |
1889 | (put 'char-code-property-table 'char-table-extra-slots 0) | |
1890 | ||
1891 | (defvar char-code-property-table | |
1892 | (make-char-table 'char-code-property-table) | |
1893 | "Char-table containing a property list of each character code. | |
1894 | ||
1895 | See also the documentation of `get-char-code-property' and | |
96db204a | 1896 | `put-char-code-property'.") |
4ed46869 KH |
1897 | |
1898 | (defun get-char-code-property (char propname) | |
1899 | "Return the value of CHAR's PROPNAME property in `char-code-property-table'." | |
1900 | (let ((plist (aref char-code-property-table char))) | |
1901 | (if (listp plist) | |
1902 | (car (cdr (memq propname plist)))))) | |
1903 | ||
1904 | (defun put-char-code-property (char propname value) | |
1905 | "Store CHAR's PROPNAME property with VALUE in `char-code-property-table'. | |
1906 | It can be retrieved with `(get-char-code-property CHAR PROPNAME)'." | |
1907 | (let ((plist (aref char-code-property-table char))) | |
1908 | (if plist | |
1909 | (let ((slot (memq propname plist))) | |
1910 | (if slot | |
1911 | (setcar (cdr slot) value) | |
1912 | (nconc plist (list propname value)))) | |
1913 | (aset char-code-property-table char (list propname value))))) | |
1914 | ||
a127b764 KH |
1915 | \f |
1916 | ;; Pretty description of encoded string | |
1917 | ||
1918 | ;; Alist of ISO 2022 control code vs the corresponding mnemonic string. | |
1919 | (defvar iso-2022-control-alist | |
1920 | '((?\x1b . "ESC") | |
1921 | (?\x0e . "SO") | |
1922 | (?\x0f . "SI") | |
1923 | (?\x8e . "SS2") | |
1924 | (?\x8f . "SS3") | |
1925 | (?\x9b . "CSI"))) | |
1926 | ||
1927 | (defun encoded-string-description (str coding-system) | |
1928 | "Return a pretty description of STR that is encoded by CODING-SYSTEM." | |
1929 | (setq str (string-as-unibyte str)) | |
993b2a7d | 1930 | (mapconcat |
8c9d55a9 | 1931 | (if (and coding-system (eq (coding-system-type coding-system) 2)) |
993b2a7d KH |
1932 | ;; Try to get a pretty description for ISO 2022 escape sequences. |
1933 | (function (lambda (x) (or (cdr (assq x iso-2022-control-alist)) | |
1934 | (format "%02X" x)))) | |
5de75f53 | 1935 | (function (lambda (x) (format "0x%02X" x)))) |
993b2a7d | 1936 | str " ")) |
a127b764 KH |
1937 | |
1938 | (defun encode-coding-char (char coding-system) | |
1939 | "Encode CHAR by CODING-SYSTEM and return the resulting string. | |
1940 | If CODING-SYSTEM can't safely encode CHAR, return nil." | |
bd953173 KH |
1941 | (let ((str1 (string-as-multibyte (char-to-string char))) |
1942 | (str2 (string-as-multibyte (make-string 2 char))) | |
a127b764 KH |
1943 | (safe-charsets (and coding-system |
1944 | (coding-system-get coding-system 'safe-charsets))) | |
8c9d55a9 | 1945 | (charset (char-charset char)) |
a127b764 KH |
1946 | enc1 enc2 i1 i2) |
1947 | (when (or (eq safe-charsets t) | |
8c9d55a9 KH |
1948 | (eq charset 'ascii) |
1949 | (memq charset safe-charsets)) | |
a127b764 KH |
1950 | ;; We must find the encoded string of CHAR. But, just encoding |
1951 | ;; CHAR will put extra control sequences (usually to designate | |
1952 | ;; ASCII charaset) at the tail if type of CODING is ISO 2022. | |
1953 | ;; To exclude such tailing bytes, we at first encode one-char | |
1954 | ;; string and two-char string, then check how many bytes at the | |
1955 | ;; tail of both encoded strings are the same. | |
1956 | ||
bd953173 | 1957 | (setq enc1 (encode-coding-string str1 coding-system) |
a127b764 | 1958 | i1 (length enc1) |
bd953173 | 1959 | enc2 (encode-coding-string str2 coding-system) |
a127b764 KH |
1960 | i2 (length enc2)) |
1961 | (while (and (> i1 0) (= (aref enc1 (1- i1)) (aref enc2 (1- i2)))) | |
1962 | (setq i1 (1- i1) i2 (1- i2))) | |
1963 | ||
1964 | ;; Now (substring enc1 i1) and (substring enc2 i2) are the same, | |
1965 | ;; and they are the extra control sequences at the tail to | |
1966 | ;; exclude. | |
1967 | (substring enc2 0 i2)))) | |
1968 | ||
1969 | ||
4ed46869 | 1970 | ;;; mule-cmds.el ends here |