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comparison lisp/mule/mule-cmds.el @ 398:74fd4e045ea6 r21-2-29

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Import from CVS: tag r21-2-29
author cvs
date Mon, 13 Aug 2007 11:13:30 +0200
parents 4f79e16b1112
children a86b2b5e0111
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397:f4aeb21a5bad 398:74fd4e045ea6
1 ;;; mule-cmds.el --- Commands for multilingual environment 1 ;;; mule-cmds.el --- Commands for multilingual environment
2 2
3 ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN. 3 ;; Copyright (C) 1995,1999 Electrotechnical Laboratory, JAPAN.
4 ;; Licensed to the Free Software Foundation. 4 ;; Licensed to the Free Software Foundation.
5 ;; Copyright (C) 1997 MORIOKA Tomohiko 5 ;; Copyright (C) 1997 MORIOKA Tomohiko
6 6
7 ;; Keywords: mule, multilingual 7 ;; Keywords: mule, multilingual
8 8
25 25
26 ;;; Code: 26 ;;; Code:
27 27
28 ;;; MULE related key bindings and menus. 28 ;;; MULE related key bindings and menus.
29 29
30 (defvar mule-keymap (make-sparse-keymap "MULE") 30 (defvar mule-keymap (make-sparse-keymap "Mule")
31 "Keymap for MULE (Multilingual environment) specific commands.") 31 "Keymap for Mule (Multilingual environment) specific commands.")
32 32
33 ;; Keep "C-x C-m ..." for mule specific commands. 33 ;; Keep "C-x C-m ..." for mule specific commands.
34 (define-key ctl-x-map "\C-m" mule-keymap) 34 (define-key ctl-x-map "\C-m" mule-keymap)
35 35
36 (define-key mule-keymap "f" 'set-buffer-file-coding-system) 36 (define-key mule-keymap "f" 'set-buffer-file-coding-system)
37 (define-key mule-keymap "F" 'set-default-buffer-file-coding-system) ; XEmacs 37 (define-key mule-keymap "F" 'set-default-buffer-file-coding-system) ; XEmacs
38 (define-key mule-keymap "t" 'set-terminal-coding-system) 38 (define-key mule-keymap "t" 'set-terminal-coding-system)
39 (define-key mule-keymap "k" 'set-keyboard-coding-system) 39 (define-key mule-keymap "k" 'set-keyboard-coding-system)
40 (define-key mule-keymap "p" 'set-buffer-process-coding-system) 40 (define-key mule-keymap "p" 'set-buffer-process-coding-system)
41 (define-key mule-keymap "\C-\\" 'select-input-method) 41 (define-key mule-keymap "x" 'set-selection-coding-system)
42 (define-key mule-keymap "X" 'set-next-selection-coding-system)
43 (define-key mule-keymap "\C-\\" 'set-input-method)
42 (define-key mule-keymap "c" 'universal-coding-system-argument) 44 (define-key mule-keymap "c" 'universal-coding-system-argument)
43 ;;(define-key mule-keymap "c" 'list-coding-system-briefly) ; XEmacs 45 ;;(define-key mule-keymap "c" 'list-coding-system-briefly) ; XEmacs
44 (define-key mule-keymap "C" 'list-coding-system) ; XEmacs 46 (define-key mule-keymap "C" 'describe-coding-system) ; XEmacs
45 (define-key mule-keymap "r" 'toggle-display-direction) ; XEmacs 47 (define-key mule-keymap "r" 'toggle-display-direction) ; XEmacs
46 (define-key mule-keymap "l" 'set-language-environment) 48 (define-key mule-keymap "l" 'set-language-environment)
47 49
48 (define-key help-map "\C-L" 'describe-language-support) 50 (define-key help-map "\C-L" 'describe-language-support)
49 (define-key help-map "L" 'describe-language-environment) 51 (define-key help-map "L" 'describe-language-environment)
61 ;; convenient because it requires shifting on most keyboards. An 63 ;; convenient because it requires shifting on most keyboards. An
62 ;; alternative is "\C-\]" which is now bound to `abort-recursive-edit' 64 ;; alternative is "\C-\]" which is now bound to `abort-recursive-edit'
63 ;; but it won't be used that frequently. 65 ;; but it won't be used that frequently.
64 (define-key global-map "\C-\\" 'toggle-input-method) 66 (define-key global-map "\C-\\" 'toggle-input-method)
65 67
68 ;;; This is no good because people often type Shift-SPC
69 ;;; meaning to type SPC. -- rms.
70 ;;; ;; Here's an alternative key binding for X users (Shift-SPACE).
71 ;;; (define-key global-map [?\S- ] 'toggle-input-method)
72
73 (defun coding-system-change-eol-conversion (coding-system eol-type)
74 "Return a coding system which differs from CODING-SYSTEM in eol conversion.
75 The returned coding system converts end-of-line by EOL-TYPE
76 but text as the same way as CODING-SYSTEM.
77 EOL-TYPE should be `lf', `crlf', `cr' or nil.
78 If EOL-TYPE is nil, the returned coding system detects
79 how end-of-line is formatted automatically while decoding.
80
81 EOL-TYPE can be specified by an symbol `unix', `dos' or `mac'.
82 They means `lf', `crlf', and `cr' respectively."
83 (if (symbolp eol-type)
84 (setq eol-type (cond ((or (eq eol-type 'unix)
85 (eq eol-type 'lf))
86 'eol-lf)
87 ((or (eq eol-type 'dos)
88 (eq eol-type 'crlf))
89 'eol-crlf)
90 ((or (eq eol-type 'mac)
91 (eq eol-type 'cr))
92 'eol-cr)
93 (t eol-type))))
94 (let ((orig-eol-type (coding-system-eol-type coding-system)))
95 (if (null orig-eol-type)
96 (if (not eol-type)
97 coding-system
98 (coding-system-property coding-system eol-type))
99 (let ((base (coding-system-base coding-system)))
100 (if (not eol-type)
101 base
102 (if (= eol-type orig-eol-type)
103 coding-system
104 (setq orig-eol-type (coding-system-eol-type base))
105 (if (null orig-eol-type)
106 (coding-system-property base eol-type))))))))
107
108 ;; (defun coding-system-change-text-conversion (coding-system coding)
109 ;; "Return a coding system which differs from CODING-SYSTEM in text conversion.
110 ;; The returned coding system converts text by CODING
111 ;; but end-of-line as the same way as CODING-SYSTEM.
112 ;; If CODING is nil, the returned coding system detects
113 ;; how text is formatted automatically while decoding."
114 ;; (if (not coding)
115 ;; (coding-system-base coding-system)
116 ;; (let ((eol-type (coding-system-eol-type coding-system)))
117 ;; (coding-system-change-eol-conversion
118 ;; coding
119 ;; (if (numberp eol-type) (aref [unix dos mac] eol-type))))))
120
66 (defun view-hello-file () 121 (defun view-hello-file ()
67 "Display the HELLO file which list up many languages and characters." 122 "Display the HELLO file which list up many languages and characters."
68 (interactive) 123 (interactive)
69 ;; We have to decode the file in any environment. 124 ;; We have to decode the file in any environment.
70 (let ((coding-system-for-read 'iso-2022-7)) 125 (let ((coding-system-for-read 'iso-2022-7bit))
71 (find-file-read-only (expand-file-name "HELLO" data-directory)))) 126 (find-file-read-only (expand-file-name "HELLO" data-directory))))
72 127
73 (defun universal-coding-system-argument () 128 (defun universal-coding-system-argument ()
74 "Execute an I/O command using the specified coding system." 129 "Execute an I/O command using the specified coding system."
75 (interactive) 130 (interactive)
76 (let* ((coding-system 131 (let* ((default (and buffer-file-coding-system
77 (read-coding-system "Coding system for following command: ")) 132 (not (eq (coding-system-type buffer-file-coding-system)
133 t))
134 (coding-system-name buffer-file-coding-system)))
135 (coding-system
136 (read-coding-system
137 (if default
138 (format "Coding system for following command (default, %s): "
139 default)
140 "Coding system for following command: ")
141 default))
78 (keyseq (read-key-sequence 142 (keyseq (read-key-sequence
79 (format "Command to execute with %s:" coding-system))) 143 (format "Command to execute with %s:" coding-system)))
80 (cmd (key-binding keyseq))) 144 (cmd (key-binding keyseq)))
81 (let ((coding-system-for-read coding-system) 145 (let ((coding-system-for-read coding-system)
82 (coding-system-for-write coding-system)) 146 (coding-system-for-write coding-system))
83 (message "") 147 (message "")
84 (call-interactively cmd)))) 148 (call-interactively cmd))))
85 149
86 (defun set-default-coding-systems (coding-system) 150 (defun set-default-coding-systems (coding-system)
87 "Set default value of various coding systems to CODING-SYSTEM. 151 "Set default value of various coding systems to CODING-SYSTEM.
88 The follwing coding systems are set: 152 This sets the following coding systems:
89 o coding system of a newly created buffer 153 o coding system of a newly created buffer
90 o default coding system for terminal output 154 o default coding system for terminal output
91 o default coding system for keyboard input 155 o default coding system for keyboard input
92 o default coding system for subprocess I/O" 156 o default coding system for subprocess I/O
157 o default coding system for converting file names."
93 (check-coding-system coding-system) 158 (check-coding-system coding-system)
94 ;;(setq-default buffer-file-coding-system coding-system) 159 ;;(setq-default buffer-file-coding-system coding-system)
95 (set-default-buffer-file-coding-system coding-system) 160 (set-default-buffer-file-coding-system coding-system)
96 ;;(setq default-terminal-coding-system coding-system) 161 ;; (if default-enable-multibyte-characters
162 ;; (setq default-file-name-coding-system coding-system))
163 ;; If coding-system is nil, honor that on MS-DOS as well, so
164 ;; that they could reset the terminal coding system.
165 ;; (unless (and (eq window-system 'pc) coding-system)
166 ;; (setq default-terminal-coding-system coding-system))
97 (setq terminal-coding-system coding-system) 167 (setq terminal-coding-system coding-system)
98 ;;(setq default-keyboard-coding-system coding-system) 168 ;;(setq default-keyboard-coding-system coding-system)
99 (setq keyboard-coding-system coding-system) 169 (setq keyboard-coding-system coding-system)
100 ;;(setq default-process-coding-system (cons coding-system coding-system)) 170 ;;(setq default-process-coding-system (cons coding-system coding-system))
171 ;; Refer to coding-system-for-read and coding-system-for-write
172 ;; so that C-x RET c works.
101 (add-hook 'comint-exec-hook 173 (add-hook 'comint-exec-hook
102 `(lambda () 174 `(lambda ()
103 (let ((proc (get-buffer-process (current-buffer)))) 175 (let ((proc (get-buffer-process (current-buffer))))
104 (set-process-input-coding-system proc ',coding-system) 176 (set-process-input-coding-system
105 (set-process-output-coding-system proc ',coding-system))) 177 proc (or coding-system-for-read ',coding-system))
178 (set-process-output-coding-system
179 proc (or coding-system-for-write ',coding-system))))
106 'append) 180 'append)
107 (setq file-name-coding-system coding-system)) 181 (setq file-name-coding-system coding-system))
108 182
109 (defun prefer-coding-system (coding-system) 183 (defun prefer-coding-system (coding-system)
110 "Add CODING-SYSTEM at the front of the priority list for automatic detection. 184 "Add CODING-SYSTEM at the front of the priority list for automatic detection.
111 This also sets the following coding systems to CODING-SYSTEM: 185 This also sets the following coding systems:
112 o coding system of a newly created buffer 186 o coding system of a newly created buffer
113 o default coding system for terminal output 187 o default coding system for terminal output
114 o default coding system for keyboard input 188 o default coding system for keyboard input
115 o default coding system for subprocess I/O" 189 o default coding system for converting file names.
190
191 If CODING-SYSTEM specifies a certain type of EOL conversion, the coding
192 systems set by this function will use that type of EOL conversion.
193
194 This command does not change the default value of terminal coding system
195 for MS-DOS terminal, because DOS terminals only support a single coding
196 system, and Emacs automatically sets the default to that coding system at
197 startup."
116 (interactive "zPrefer coding system: ") 198 (interactive "zPrefer coding system: ")
117 (if (not (and coding-system (coding-system-p coding-system))) 199 (if (not (and coding-system (find-coding-system coding-system)))
118 (error "Invalid coding system `%s'" coding-system)) 200 (error "Invalid coding system `%s'" coding-system))
119 (let ((coding-category (coding-system-category coding-system)) 201 (let ((coding-category (coding-system-category coding-system))
120 (parent (coding-system-parent coding-system))) 202 (base (coding-system-base coding-system))
203 (eol-type (coding-system-eol-type coding-system)))
121 (if (not coding-category) 204 (if (not coding-category)
122 ;; CODING-SYSTEM is no-conversion or undecided. 205 ;; CODING-SYSTEM is no-conversion or undecided.
123 (error "Can't prefer the coding system `%s'" coding-system)) 206 (error "Can't prefer the coding system `%s'" coding-system))
124 (set coding-category (or parent coding-system)) 207 (set-coding-category-system coding-category (or base coding-system))
125 (if (not (eq coding-category (car coding-category-list))) 208 ;; (update-coding-systems-internal)
209 (or (eq coding-category (car (coding-category-list)))
126 ;; We must change the order. 210 ;; We must change the order.
127 (setq coding-category-list 211 (set-coding-priority-list (list coding-category)))
128 (cons coding-category 212 (if (and base (interactive-p))
129 (delq coding-category coding-category-list)))) 213 (message "Highest priority is set to %s (base of %s)"
130 (if (and parent (interactive-p)) 214 base coding-system))
131 (message "Highest priority is set to %s (parent of %s)" 215 ;; If they asked for specific EOL conversion, honor that.
132 parent coding-system)) 216 (if (memq eol-type '(lf crlf mac))
133 (set-default-coding-systems (or parent coding-system)))) 217 (setq coding-system
134 218 (coding-system-change-eol-conversion base eol-type))
219 (setq coding-system base))
220 (set-default-coding-systems coding-system)))
221
222 ;; (defun find-coding-systems-region-subset-p (list1 list2)
223 ;; "Return non-nil if all elements in LIST1 are included in LIST2.
224 ;; Comparison done with EQ."
225 ;; (catch 'tag
226 ;; (while list1
227 ;; (or (memq (car list1) list2)
228 ;; (throw 'tag nil))
229 ;; (setq list1 (cdr list1)))
230 ;; t))
231
232 ;; (defun find-coding-systems-region (from to)
233 ;; "Return a list of proper coding systems to encode a text between FROM and TO.
234 ;; All coding systems in the list can safely encode any multibyte characters
235 ;; in the text.
236 ;;
237 ;; If the text contains no multibyte characters, return a list of a single
238 ;; element `undecided'."
239 ;; (find-coding-systems-for-charsets (find-charset-region from to)))
240
241 ;; (defun find-coding-systems-string (string)
242 ;; "Return a list of proper coding systems to encode STRING.
243 ;; All coding systems in the list can safely encode any multibyte characters
244 ;; in STRING.
245 ;;
246 ;; If STRING contains no multibyte characters, return a list of a single
247 ;; element `undecided'."
248 ;; (find-coding-systems-for-charsets (find-charset-string string)))
249
250 ;; (defun find-coding-systems-for-charsets (charsets)
251 ;; "Return a list of proper coding systems to encode characters of CHARSETS.
252 ;; CHARSETS is a list of character sets."
253 ;; (if (or (null charsets)
254 ;; (and (= (length charsets) 1)
255 ;; (eq 'ascii (car charsets))))
256 ;; '(undecided)
257 ;; (setq charsets (delq 'composition charsets))
258 ;; (let ((l (coding-system-list 'base-only))
259 ;; (charset-preferred-codings
260 ;; (mapcar (function
261 ;; (lambda (x)
262 ;; (if (eq x 'unknown)
263 ;; 'raw-text
264 ;; (get-charset-property x 'preferred-coding-system))))
265 ;; charsets))
266 ;; (priorities (mapcar (function (lambda (x) (symbol-value x)))
267 ;; coding-category-list))
268 ;; codings coding safe)
269 ;; (if (memq 'unknown charsets)
270 ;; ;; The region contains invalid multibyte characters.
271 ;; (setq l '(raw-text)))
272 ;; (while l
273 ;; (setq coding (car l) l (cdr l))
274 ;; (if (and (setq safe (coding-system-get coding 'safe-charsets))
275 ;; (or (eq safe t)
276 ;; (find-coding-systems-region-subset-p charsets safe)))
277 ;; ;; We put the higher priority to coding systems included
278 ;; ;; in CHARSET-PREFERRED-CODINGS, and within them, put the
279 ;; ;; higher priority to coding systems which support smaller
280 ;; ;; number of charsets.
281 ;; (let ((priority
282 ;; (+ (if (coding-system-get coding 'mime-charset) 4096 0)
283 ;; (lsh (length (memq coding priorities)) 7)
284 ;; (if (memq coding charset-preferred-codings) 64 0)
285 ;; (if (> (coding-system-type coding) 0) 32 0)
286 ;; (if (consp safe) (- 32 (length safe)) 0))))
287 ;; (setq codings (cons (cons priority coding) codings)))))
288 ;; (mapcar 'cdr
289 ;; (sort codings (function (lambda (x y) (> (car x) (car y))))))
290 ;; )))
291
292 ;; (defun find-multibyte-characters (from to &optional maxcount excludes)
293 ;; "Find multibyte characters in the region specified by FROM and TO.
294 ;; If FROM is a string, find multibyte characters in the string.
295 ;; The return value is an alist of the following format:
296 ;; ((CHARSET COUNT CHAR ...) ...)
297 ;; where
298 ;; CHARSET is a character set,
299 ;; COUNT is a number of characters,
300 ;; CHARs are found characters of the character set.
301 ;; Optional 3rd arg MAXCOUNT limits how many CHARs are put in the above list.
302 ;; Optional 4th arg EXCLUDE is a list of character sets to be ignored.
303 ;;
304 ;; For invalid characters, CHARs are actually strings."
305 ;; (let ((chars nil)
306 ;; charset char)
307 ;; (if (stringp from)
308 ;; (let ((idx 0))
309 ;; (while (setq idx (string-match "[^\000-\177]" from idx))
310 ;; (setq char (aref from idx)
311 ;; charset (char-charset char))
312 ;; (if (eq charset 'unknown)
313 ;; (setq char (match-string 0)))
314 ;; (if (or (eq charset 'unknown)
315 ;; (not (or (eq excludes t) (memq charset excludes))))
316 ;; (let ((slot (assq charset chars)))
317 ;; (if slot
318 ;; (if (not (memq char (nthcdr 2 slot)))
319 ;; (let ((count (nth 1 slot)))
320 ;; (setcar (cdr slot) (1+ count))
321 ;; (if (or (not maxcount) (< count maxcount))
322 ;; (nconc slot (list char)))))
323 ;; (setq chars (cons (list charset 1 char) chars)))))
324 ;; (setq idx (1+ idx))))
325 ;; (save-excursion
326 ;; (goto-char from)
327 ;; (while (re-search-forward "[^\000-\177]" to t)
328 ;; (setq char (preceding-char)
329 ;; charset (char-charset char))
330 ;; (if (eq charset 'unknown)
331 ;; (setq char (match-string 0)))
332 ;; (if (or (eq charset 'unknown)
333 ;; (not (or (eq excludes t) (memq charset excludes))))
334 ;; (let ((slot (assq charset chars)))
335 ;; (if slot
336 ;; (if (not (member char (nthcdr 2 slot)))
337 ;; (let ((count (nth 1 slot)))
338 ;; (setcar (cdr slot) (1+ count))
339 ;; (if (or (not maxcount) (< count maxcount))
340 ;; (nconc slot (list char)))))
341 ;; (setq chars (cons (list charset 1 char) chars))))))))
342 ;; (nreverse chars)))
343
344 ;; (defvar last-coding-system-specified nil
345 ;; "Most recent coding system explicitly specified by the user when asked.
346 ;; This variable is set whenever Emacs asks the user which coding system
347 ;; to use in order to write a file. If you set it to nil explicitly,
348 ;; then call `write-region', then afterward this variable will be non-nil
349 ;; only if the user was explicitly asked and specified a coding system.")
350
351 ;; (defun select-safe-coding-system (from to &optional default-coding-system)
352 ;; "Ask a user to select a safe coding system from candidates.
353 ;; The candidates of coding systems which can safely encode a text
354 ;; between FROM and TO are shown in a popup window.
355 ;;
356 ;; Optional arg DEFAULT-CODING-SYSTEM specifies a coding system to be
357 ;; checked at first. If omitted, buffer-file-coding-system of the
358 ;; current buffer is used.
359 ;;
360 ;; If the text can be encoded safely by DEFAULT-CODING-SYSTEM, it is
361 ;; returned without any user interaction.
362 ;;
363 ;; Kludgy feature: if FROM is a string, the string is the target text,
364 ;; and TO is ignored."
365 ;; (or default-coding-system
366 ;; (setq default-coding-system buffer-file-coding-system))
367 ;; (let* ((charsets (if (stringp from) (find-charset-string from)
368 ;; (find-charset-region from to)))
369 ;; (safe-coding-systems (find-coding-systems-for-charsets charsets)))
370 ;; (if (or (not enable-multibyte-characters)
371 ;; (eq (car safe-coding-systems) 'undecided)
372 ;; (eq default-coding-system 'no-conversion)
373 ;; (and default-coding-system
374 ;; (memq (coding-system-base default-coding-system)
375 ;; safe-coding-systems)))
376 ;; default-coding-system
377 ;;
378 ;; ;; At first, change each coding system to the corresponding
379 ;; ;; mime-charset name if it is also a coding system.
380 ;; (let ((l safe-coding-systems)
381 ;; mime-charset)
382 ;; (while l
383 ;; (setq mime-charset (coding-system-get (car l) 'mime-charset))
384 ;; (if (and mime-charset (coding-system-p mime-charset))
385 ;; (setcar l mime-charset))
386 ;; (setq l (cdr l))))
387 ;;
388 ;; (let ((non-safe-chars (find-multibyte-characters
389 ;; from to 3
390 ;; (and default-coding-system
391 ;; (coding-system-get default-coding-system
392 ;; 'safe-charsets))))
393 ;; show-position overlays)
394 ;; (save-excursion
395 ;; ;; Highlight characters that default-coding-system can't encode.
396 ;; (when (integerp from)
397 ;; (goto-char from)
398 ;; (let ((found nil))
399 ;; (while (and (not found)
400 ;; (re-search-forward "[^\000-\177]" to t))
401 ;; (setq found (assq (char-charset (preceding-char))
402 ;; non-safe-chars))))
403 ;; (forward-line -1)
404 ;; (setq show-position (point))
405 ;; (save-excursion
406 ;; (while (and (< (length overlays) 256)
407 ;; (re-search-forward "[^\000-\177]" to t))
408 ;; (let* ((char (preceding-char))
409 ;; (charset (char-charset char)))
410 ;; (when (assq charset non-safe-chars)
411 ;; (setq overlays (cons (make-overlay (1- (point)) (point))
412 ;; overlays))
413 ;; (overlay-put (car overlays) 'face 'highlight))))))
414 ;;
415 ;; ;; At last, ask a user to select a proper coding system.
416 ;; (unwind-protect
417 ;; (save-window-excursion
418 ;; (when show-position
419 ;; ;; At first, be sure to show the current buffer.
420 ;; (set-window-buffer (selected-window) (current-buffer))
421 ;; (set-window-start (selected-window) show-position))
422 ;; ;; Then, show a helpful message.
423 ;; (with-output-to-temp-buffer "*Warning*"
424 ;; (save-excursion
425 ;; (set-buffer standard-output)
426 ;; (insert "The target text contains the following non ASCII character(s):\n")
427 ;; (let ((len (length non-safe-chars))
428 ;; (shown 0))
429 ;; (while (and non-safe-chars (< shown 3))
430 ;; (when (> (length (car non-safe-chars)) 2)
431 ;; (setq shown (1+ shown))
432 ;; (insert (format "%25s: " (car (car non-safe-chars))))
433 ;; (let ((l (nthcdr 2 (car non-safe-chars))))
434 ;; (while l
435 ;; (if (or (stringp (car l)) (char-valid-p (car l)))
436 ;; (insert (car l)))
437 ;; (setq l (cdr l))))
438 ;; (if (> (nth 1 (car non-safe-chars)) 3)
439 ;; (insert "..."))
440 ;; (insert "\n"))
441 ;; (setq non-safe-chars (cdr non-safe-chars)))
442 ;; (if (< shown len)
443 ;; (insert (format "%27s\n" "..."))))
444 ;; (insert (format "\
445 ;; These can't be encoded safely by the coding system %s.
446 ;;
447 ;; Please select one from the following safe coding systems:\n"
448 ;; default-coding-system))
449 ;; (let ((pos (point))
450 ;; (fill-prefix " "))
451 ;; (mapcar (function (lambda (x) (princ " ") (princ x)))
452 ;; safe-coding-systems)
453 ;; (fill-region-as-paragraph pos (point)))))
454 ;;
455 ;; ;; Read a coding system.
456 ;; (let* ((safe-names (mapcar (lambda (x) (list (symbol-name x)))
457 ;; safe-coding-systems))
458 ;; (name (completing-read
459 ;; (format "Select coding system (default %s): "
460 ;; (car safe-coding-systems))
461 ;; safe-names nil t nil nil
462 ;; (car (car safe-names)))))
463 ;; (setq last-coding-system-specified (intern name))
464 ;; (if (integerp (coding-system-eol-type default-coding-system))
465 ;; (setq last-coding-system-specified
466 ;; (coding-system-change-eol-conversion
467 ;; last-coding-system-specified
468 ;; (coding-system-eol-type default-coding-system))))
469 ;; last-coding-system-specified))
470 ;; (kill-buffer "*Warning*")
471 ;; (while overlays
472 ;; (delete-overlay (car overlays))
473 ;; (setq overlays (cdr overlays)))))))))
474
475 ;; (setq select-safe-coding-system-function 'select-safe-coding-system)
476
477 ;; (defun select-message-coding-system ()
478 ;; "Return a coding system to encode the outgoing message of the current buffer.
479 ;; It at first tries the first coding system found in these variables
480 ;; in this order:
481 ;; (1) local value of `buffer-file-coding-system'
482 ;; (2) value of `sendmail-coding-system'
483 ;; (3) value of `default-buffer-file-coding-system'
484 ;; (4) value of `default-sendmail-coding-system'
485 ;; If the found coding system can't encode the current buffer,
486 ;; or none of them are bound to a coding system,
487 ;; it asks the user to select a proper coding system."
488 ;; (let ((coding (or (and (local-variable-p 'buffer-file-coding-system)
489 ;; buffer-file-coding-system)
490 ;; sendmail-coding-system
491 ;; default-buffer-file-coding-system
492 ;; default-sendmail-coding-system)))
493 ;; (if (eq coding 'no-conversion)
494 ;; ;; We should never use no-conversion for outgoing mails.
495 ;; (setq coding nil))
496 ;; (if (fboundp select-safe-coding-system-function)
497 ;; (funcall select-safe-coding-system-function
498 ;; (point-min) (point-max) coding)
499 ;; coding)))
135 500
136 ;;; Language support staffs. 501 ;;; Language support stuff.
137 502
138 (defvar language-info-alist nil 503 (defvar language-info-alist nil
139 "Alist of language names vs the corresponding information of various kind. 504 "Alist of language environment definitions.
140 Each element looks like: 505 Each element looks like:
141 (LANGUAGE-NAME . ((KEY . INFO) ...)) 506 (LANGUAGE-NAME . ((KEY . INFO) ...))
142 where LANGUAGE-NAME is a string, 507 where LANGUAGE-NAME is a string, the name of the language environment,
143 KEY is a symbol denoting the kind of information, 508 KEY is a symbol denoting the kind of information, and
144 INFO is any Lisp object which contains the actual information related 509 INFO is the data associated with KEY.
145 to KEY.") 510 Meaningful values for KEY include
146 511
147 (defun get-language-info (language-name key) 512 documentation value is documentation of what this language environment
148 "Return the information for LANGUAGE-NAME of the kind KEY. 513 is meant for, and how to use it.
149 KEY is a symbol denoting the kind of required information." 514 charset value is a list of the character sets used by this
150 (if (symbolp language-name) 515 language environment.
151 (setq language-name (symbol-name language-name))) 516 sample-text value is one line of text,
152 (let ((lang-slot (assoc-ignore-case language-name language-info-alist))) 517 written using those character sets,
518 appropriate for this language environment.
519 setup-function value is a function to call to switch to this
520 language environment.
521 exit-function value is a function to call to leave this
522 language environment.
523 coding-system value is a list of coding systems that are good
524 for saving text written in this language environment.
525 This list serves as suggestions to the user;
526 in effect, as a kind of documentation.
527 coding-priority value is a list of coding systems for this language
528 environment, in order of decreasing priority.
529 This is used to set up the coding system priority
530 list when you switch to this language environment.
531 input-method value is a default input method for this language
532 environment.
533 features value is a list of features requested in this
534 language environment.
535 tutorial value is a tutorial file name written in the language.")
536
537 (defun get-language-info (lang-env key)
538 "Return information listed under KEY for language environment LANG-ENV.
539 KEY is a symbol denoting the kind of information.
540 For a list of useful values for KEY and their meanings,
541 see `language-info-alist'."
542 (if (symbolp lang-env)
543 (setq lang-env (symbol-name lang-env)))
544 (let ((lang-slot (assoc-ignore-case lang-env language-info-alist)))
153 (if lang-slot 545 (if lang-slot
154 (cdr (assq key (cdr lang-slot)))))) 546 (cdr (assq key (cdr lang-slot))))))
155 547
156 (defun set-language-info (language-name key info) 548 (defun set-language-info (lang-env key info)
157 "Set for LANGUAGE-NAME the information INFO under KEY. 549 "Modify part of the definition of language environment LANG-ENV.
550 Specifically, this stores the information INFO under KEY
551 in the definition of this language environment.
158 KEY is a symbol denoting the kind of information. 552 KEY is a symbol denoting the kind of information.
159 INFO is any Lisp object which contains the actual information. 553 INFO is the value for that information.
160 554
161 Currently, the following KEYs are used by Emacs: 555 For a list of useful values for KEY and their meanings,
162 556 see `language-info-alist'."
163 charset: list of symbols whose values are charsets specific to the language. 557 (if (symbolp lang-env)
164 558 (setq lang-env (symbol-name lang-env)))
165 coding-system: list of coding systems specific to the language.
166
167 tutorial: a tutorial file name written in the language.
168
169 sample-text: one line short text containing characters of the language.
170
171 documentation: t or a string describing how Emacs supports the language.
172 If a string is specified, it is shown before any other information
173 of the language by the command `describe-language-environment'.
174
175 setup-function: a function to call for setting up environment
176 convenient for a user of the language.
177
178 If KEY is documentation or setup-function, you can also specify
179 a cons cell as INFO, in which case, the car part should be
180 a normal value as INFO for KEY (as described above),
181 and the cdr part should be a symbol whose value is a menu keymap
182 in which an entry for the language is defined. But, only the car part
183 is actually set as the information.
184
185 We will define more KEYs in the future. To avoid conflict,
186 if you want to use your own KEY values, make them start with `user-'."
187 (if (symbolp language-name)
188 (setq language-name (symbol-name language-name)))
189 (let (lang-slot key-slot) 559 (let (lang-slot key-slot)
190 (setq lang-slot (assoc language-name language-info-alist)) 560 (setq lang-slot (assoc lang-env language-info-alist))
191 (if (null lang-slot) ; If no slot for the language, add it. 561 (if (null lang-slot) ; If no slot for the language, add it.
192 (setq lang-slot (list language-name) 562 (setq lang-slot (list lang-env)
193 language-info-alist (cons lang-slot language-info-alist))) 563 language-info-alist (cons lang-slot language-info-alist)))
194 (setq key-slot (assq key lang-slot)) 564 (setq key-slot (assq key lang-slot))
195 (if (null key-slot) ; If no slot for the key, add it. 565 (if (null key-slot) ; If no slot for the key, add it.
196 (progn 566 (progn
197 (setq key-slot (list key)) 567 (setq key-slot (list key))
198 (setcdr lang-slot (cons key-slot (cdr lang-slot))))) 568 (setcdr lang-slot (cons key-slot (cdr lang-slot)))))
199 ;; Setup menu. 569 (setcdr key-slot info)))
200 (cond ((eq key 'documentation) 570
201 ;; (define-key-after 571 (defun set-language-info-alist (lang-env alist &optional parents)
202 ;; (if (consp info) 572 "Store ALIST as the definition of language environment LANG-ENV.
203 ;; (prog1 (symbol-value (cdr info)) 573 ALIST is an alist of KEY and INFO values. See the documentation of
204 ;; (setq info (car info))) 574 `set-language-info' for the meanings of KEY and INFO."
205 ;; describe-language-environment-map) 575 (if (symbolp lang-env)
206 ;; (vector (intern language-name)) 576 (setq lang-env (symbol-name lang-env)))
207 ;; (cons language-name 'describe-specified-language-support) 577 (let (; (describe-map describe-language-environment-map)
208 ;; t) 578 ; (setup-map setup-language-environment-map)
209 (if (consp info) 579 )
210 (setq info (car info))) 580 ;; (if parents
211 (when (featurep 'menubar) 581 ;; (let ((l parents)
212 (eval-after-load 582 ;; map parent-symbol parent)
583 ;; (while l
584 ;; (if (symbolp (setq parent-symbol (car l)))
585 ;; (setq parent (symbol-name parent))
586 ;; (setq parent parent-symbol parent-symbol (intern parent)))
587 ;; (setq map (lookup-key describe-map (vector parent-symbol)))
588 ;; (if (not map)
589 ;; (progn
590 ;; (setq map (intern (format "describe-%s-environment-map"
591 ;; (downcase parent))))
592 ;; (define-prefix-command map)
593 ;; (define-key-after describe-map (vector parent-symbol)
594 ;; (cons parent map) t)))
595 ;; (setq describe-map (symbol-value map))
596 ;; (setq map (lookup-key setup-map (vector parent-symbol)))
597 ;; (if (not map)
598 ;; (progn
599 ;; (setq map (intern (format "setup-%s-environment-map"
600 ;; (downcase parent))))
601 ;; (define-prefix-command map)
602 ;; (define-key-after setup-map (vector parent-symbol)
603 ;; (cons parent map) t)))
604 ;; (setq setup-map (symbol-value map))
605 ;; (setq l (cdr l)))))
606
607 ;; Set up menu items for this language env.
608 (let ((doc (assq 'documentation alist)))
609 (when doc
610 ;; (define-key-after describe-map (vector (intern lang-env))
611 ;; (cons lang-env 'describe-specified-language-support) t)
612 (when (featurep 'menubar)
613 (eval-after-load
213 "menubar-items.elc" 614 "menubar-items.elc"
214 `(add-menu-button 615 `(add-menu-button
215 '("Mule" "Describe Language Support") 616 '("Mule" "Describe Language Support")
216 (vector ,language-name 617 (vector ,lang-env
217 '(describe-language-environment ,language-name) 618 '(describe-language-environment ,lang-env)
218 t)))) 619 t))))
219 ) 620 ))
220 ((eq key 'setup-function) 621 ;; (define-key-after setup-map (vector (intern lang-env))
221 ;; (define-key-after 622 ;; (cons lang-env 'setup-specified-language-environment) t)
222 ;; (if (consp info) 623 (when (featurep 'menubar)
223 ;; (prog1 (symbol-value (cdr info)) 624 (eval-after-load
224 ;; (setq info (car info))) 625 "menubar-items.elc"
225 ;; setup-language-environment-map) 626 `(add-menu-button
226 ;; (vector (intern language-name)) 627 '("Mule" "Set Language Environment")
227 ;; (cons language-name 'setup-specified-language-environment) 628 (vector ,lang-env
228 ;; t) 629 '(set-language-environment ,lang-env)
229 (if (consp info) 630 t))))
230 (setq info (car info))) 631
231 (when (featurep 'menubar) 632 (while alist
232 (eval-after-load 633 (set-language-info lang-env (car (car alist)) (cdr (car alist)))
233 "menubar-items.elc" 634 (setq alist (cdr alist)))))
234 `(add-menu-button
235 '("Mule" "Set Language Environment")
236 (vector ,language-name
237 '(set-language-environment ,language-name)
238 t))))
239 ))
240
241 (setcdr key-slot info)
242 ))
243
244 (defun set-language-info-alist (language-name alist)
245 "Set for LANGUAGE-NAME the information in ALIST.
246 ALIST is an alist of KEY and INFO. See the documentation of
247 `set-language-info' for the meanings of KEY and INFO."
248 (if (symbolp language-name)
249 (setq language-name (symbol-name language-name)))
250 (while alist
251 (set-language-info language-name (car (car alist)) (cdr (car alist)))
252 (setq alist (cdr alist))))
253 635
254 (defun read-language-name (key prompt &optional default) 636 (defun read-language-name (key prompt &optional default)
255 "Read language name which has information for KEY, prompting with PROMPT. 637 "Read a language environment name which has information for KEY.
256 DEFAULT is the default choice of language. 638 If KEY is nil, read any language environment.
257 This returns a language name as a string." 639 Prompt with PROMPT. DEFAULT is the default choice of language environment.
640 This returns a language environment name as a string."
258 (let* ((completion-ignore-case t) 641 (let* ((completion-ignore-case t)
259 (name (completing-read prompt 642 (name (completing-read prompt
260 language-info-alist 643 language-info-alist
261 (function (lambda (elm) (assq key elm))) 644 (and key
262 t nil default))) 645 (function (lambda (elm) (assq key elm))))
646 t nil nil default)))
263 (if (and (> (length name) 0) 647 (if (and (> (length name) 0)
264 (get-language-info name key)) 648 (or (not key)
649 (get-language-info name key)))
265 name))) 650 name)))
266 651
267 ;;; Multilingual input methods. 652 ;;; Multilingual input methods.
268 653
269 (defconst leim-list-file-name "leim-list.el" 654 (defconst leim-list-file-name "leim-list.el"
274 659
275 (defvar leim-list-header (format 660 (defvar leim-list-header (format
276 ";;; %s -- list of LEIM (Library of Emacs Input Method) 661 ";;; %s -- list of LEIM (Library of Emacs Input Method)
277 ;; 662 ;;
278 ;; This file contains a list of LEIM (Library of Emacs Input Method) 663 ;; This file contains a list of LEIM (Library of Emacs Input Method)
279 ;; in the same directory as this file. Loading this file registeres 664 ;; in the same directory as this file. Loading this file registers
280 ;; the whole input methods in Emacs. 665 ;; the whole input methods in Emacs.
281 ;; 666 ;;
282 ;; Each entry has the form: 667 ;; Each entry has the form:
283 ;; (register-input-method 668 ;; (register-input-method
284 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC 669 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC
319 "Title string of the current input method shown in mode line.") 704 "Title string of the current input method shown in mode line.")
320 (make-variable-buffer-local 'current-input-method-title) 705 (make-variable-buffer-local 'current-input-method-title)
321 (put 'current-input-method-title 'permanent-local t) 706 (put 'current-input-method-title 'permanent-local t)
322 707
323 (defcustom default-input-method nil 708 (defcustom default-input-method nil
324 "*Default input method for multilingual text. 709 "*Default input method for multilingual text (a string).
325 This is the input method activated automatically by the command 710 This is the input method activated automatically by the command
326 `toggle-input-method' (\\[toggle-input-method])." 711 `toggle-input-method' (\\[toggle-input-method])."
327 :group 'mule) 712 :group 'mule
713 :type '(choice (const nil) string))
714
715 (put 'input-method-function 'permanent-local t)
328 716
329 (defvar input-method-history nil 717 (defvar input-method-history nil
330 "History list for some commands that read input methods.") 718 "History list for some commands that read input methods.")
331 (make-variable-buffer-local 'input-method-history) 719 (make-variable-buffer-local 'input-method-history)
332 (put 'input-method-history 'permanent-local t) 720 (put 'input-method-history 'permanent-local t)
346 This function is called with no argument.") 734 This function is called with no argument.")
347 (make-variable-buffer-local 'describe-current-input-method-function) 735 (make-variable-buffer-local 'describe-current-input-method-function)
348 (put 'describe-current-input-method-function 'permanent-local t) 736 (put 'describe-current-input-method-function 'permanent-local t)
349 737
350 (defvar input-method-alist nil 738 (defvar input-method-alist nil
351 "Alist of input method names vs the corresponding information to use it. 739 "Alist of input method names vs how to use them.
352 Each element has the form: 740 Each element has the form:
353 (INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC TITLE DESCRIPTION ...) 741 (INPUT-METHOD LANGUAGE-ENV ACTIVATE-FUNC TITLE DESCRIPTION ARGS...)
354 See the function `register-input-method' for the meanings of each elements.") 742 See the function `register-input-method' for the meanings of the elements.")
355 743
356 (defun register-input-method (input-method language-name &rest args) 744 (defun register-input-method (input-method lang-env &rest args)
357 "Register INPUT-METHOD as an input method for LANGUAGE-NAME. 745 "Register INPUT-METHOD as an input method for language environment ENV.
358 INPUT-METHOD and LANGUAGE-NAME are symbols or strings. 746 INPUT-METHOD and LANG-ENV are symbols or strings.
747
359 The remaining arguments are: 748 The remaining arguments are:
360 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARG ... 749 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARGS...
361 where, 750 ACTIVATE-FUNC is a function to call to activate this method.
362 ACTIVATE-FUNC is a function to call for activating this method. 751 TITLE is a string to show in the mode line when this method is active.
363 TITLE is a string shown in mode-line while this method is active, 752 DESCRIPTION is a string describing this method and what it is good for.
364 DESCRIPTION is a string describing about this method, 753 The ARGS, if any, are passed as arguments to ACTIVATE-FUNC.
365 Arguments to ACTIVATE-FUNC are INPUT-METHOD and ARGs." 754 All told, the arguments to ACTIVATE-FUNC are INPUT-METHOD and the ARGS.
366 (if (symbolp language-name) 755
367 (setq language-name (symbol-name language-name))) 756 This function is mainly used in the file \"leim-list.el\" which is
757 created at building time of emacs, registering all quail input methods
758 contained in the emacs distribution.
759
760 In case you want to register a new quail input method by yourself, be
761 careful to use the same input method title as given in the third
762 parameter of `quail-define-package' (if the values are different, the
763 string specified in this function takes precedence).
764
765 The commands `describe-input-method' and `list-input-methods' need
766 this duplicated values to show some information about input methods
767 without loading the affected quail packages."
768 (if (symbolp lang-env)
769 (setq lang-env (symbol-name lang-env)))
368 (if (symbolp input-method) 770 (if (symbolp input-method)
369 (setq input-method (symbol-name input-method))) 771 (setq input-method (symbol-name input-method)))
370 (let ((info (cons language-name args)) 772 (let ((info (cons lang-env args))
371 (slot (assoc input-method input-method-alist))) 773 (slot (assoc input-method input-method-alist)))
372 (if slot 774 (if slot
373 (setcdr slot info) 775 (setcdr slot info)
374 (setq slot (cons input-method info)) 776 (setq slot (cons input-method info))
375 (setq input-method-alist (cons slot input-method-alist))))) 777 (setq input-method-alist (cons slot input-method-alist)))))
385 (setq prompt (format prompt default))) 787 (setq prompt (format prompt default)))
386 (let* ((completion-ignore-case t) 788 (let* ((completion-ignore-case t)
387 ;; This binding is necessary because input-method-history is 789 ;; This binding is necessary because input-method-history is
388 ;; buffer local. 790 ;; buffer local.
389 (input-method (completing-read prompt input-method-alist 791 (input-method (completing-read prompt input-method-alist
390 nil t nil 'input-method-history) 792 nil t nil 'input-method-history
391 ;;default) 793 default)))
392 )) 794 (if (and input-method (symbolp input-method))
795 (setq input-method (symbol-name input-method)))
393 (if (> (length input-method) 0) 796 (if (> (length input-method) 0)
394 input-method 797 input-method
395 (if inhibit-null 798 (if inhibit-null
396 (error "No valid input method is specified"))))) 799 (error "No valid input method is specified")))))
397 800
398 (defun activate-input-method (input-method) 801 (defun activate-input-method (input-method)
399 "Turn INPUT-METHOD on. 802 "Switch to input method INPUT-METHOD for the current buffer.
400 If some input method is already on, turn it off at first." 803 If some other input method is already active, turn it off first.
401 (if (symbolp input-method) 804 If INPUT-METHOD is nil, deactivate any current input method."
805 (if (and input-method (symbolp input-method))
402 (setq input-method (symbol-name input-method))) 806 (setq input-method (symbol-name input-method)))
403 (if (and current-input-method 807 (if (and current-input-method
404 (not (string= current-input-method input-method))) 808 (not (string= current-input-method input-method)))
405 (inactivate-input-method)) 809 (inactivate-input-method))
406 (unless current-input-method 810 (unless (or current-input-method (null input-method))
407 (let ((slot (assoc input-method input-method-alist))) 811 (let ((slot (assoc input-method input-method-alist)))
408 (if (null slot) 812 (if (null slot)
409 (error "Can't activate input method `%s'" input-method)) 813 (error "Can't activate input method `%s'" input-method))
410 (apply (nth 2 slot) input-method (nthcdr 5 slot)) 814 (let ((func (nth 2 slot)))
815 (if (functionp func)
816 (apply (nth 2 slot) input-method (nthcdr 5 slot))
817 (if (and (consp func) (symbolp (car func)) (symbolp (cdr func)))
818 (progn
819 (require (cdr func))
820 (apply (car func) input-method (nthcdr 5 slot)))
821 (error "Can't activate input method `%s'" input-method))))
411 (setq current-input-method input-method) 822 (setq current-input-method input-method)
412 (setq current-input-method-title (nth 3 slot)) 823 (setq current-input-method-title (nth 3 slot))
413 (run-hooks 'input-method-activate-hook)))) 824 (unwind-protect
825 (run-hooks 'input-method-activate-hook)
826 (force-mode-line-update)))))
414 827
415 (defun inactivate-input-method () 828 (defun inactivate-input-method ()
416 "Turn off the current input method." 829 "Turn off the current input method."
417 (when current-input-method 830 (when current-input-method
418 (if input-method-history 831 (if input-method-history
424 (unwind-protect 837 (unwind-protect
425 (funcall inactivate-current-input-method-function) 838 (funcall inactivate-current-input-method-function)
426 (unwind-protect 839 (unwind-protect
427 (run-hooks 'input-method-inactivate-hook) 840 (run-hooks 'input-method-inactivate-hook)
428 (setq current-input-method nil 841 (setq current-input-method nil
429 current-input-method-title nil))))) 842 current-input-method-title nil)
430 843 (force-mode-line-update)))))
431 (defun select-input-method (input-method) 844
432 "Select and turn on INPUT-METHOD. 845 (defun set-input-method (input-method)
433 This sets the default input method to what you specify, 846 "Select and activate input method INPUT-METHOD for the current buffer.
434 and turn it on for the current buffer." 847 This also sets the default input method to the one you specify."
435 (interactive 848 (interactive
436 (let* ((default (or (car input-method-history) default-input-method))) 849 (let* ((default (or (car input-method-history) default-input-method)))
437 (list (read-input-method-name 850 (list (read-input-method-name
438 (if default "Select input method (default %s): " "Select input method: ") 851 (if default "Select input method (default %s): " "Select input method: ")
439 default t)))) 852 default t))))
441 (setq default-input-method input-method)) 854 (setq default-input-method input-method))
442 855
443 (defun toggle-input-method (&optional arg) 856 (defun toggle-input-method (&optional arg)
444 "Turn on or off a multilingual text input method for the current buffer. 857 "Turn on or off a multilingual text input method for the current buffer.
445 858
446 With arg, read an input method from minibuffer and turn it on. 859 With no prefix argument, if an input method is currently activated,
447 860 turn it off. Otherwise, activate an input method -- the one most
448 Without arg, if some input method is currently activated, turn it off, 861 recently used, or the one specified in `default-input-method', or
449 else turn on an input method selected last time 862 the one read from the minibuffer.
450 or the default input method (see `default-input-method'). 863
451 864 With a prefix argument, read an input method from the minibuffer and
452 When there's no input method to turn on, turn on what read from minibuffer." 865 turn it on.
866
867 The default is to use the most recent input method specified
868 \(not including the currently active input method, if any)."
453 (interactive "P") 869 (interactive "P")
454 (let* ((default (or (car input-method-history) default-input-method))) 870 (if (and current-input-method (not arg))
455 (if (and current-input-method (not arg)) 871 (inactivate-input-method)
456 (inactivate-input-method) 872 (let ((default (or (car input-method-history) default-input-method)))
873 (if (and arg default (equal current-input-method default)
874 (> (length input-method-history) 1))
875 (setq default (nth 1 input-method-history)))
457 (activate-input-method 876 (activate-input-method
458 (if (or arg (not default)) 877 (if (or arg (not default))
459 (read-input-method-name 878 (progn
460 (if default "Input method (default %s): " "Input method: " ) 879 (read-input-method-name
461 default t) 880 (if default "Input method (default %s): " "Input method: " )
881 default t))
462 default)) 882 default))
463 (or default-input-method 883 (or default-input-method
464 (setq default-input-method current-input-method))))) 884 (setq default-input-method current-input-method)))))
465 885
466 (defun describe-input-method (input-method) 886 (defun describe-input-method (input-method)
467 "Describe input method INPUT-METHOD." 887 "Describe input method INPUT-METHOD."
468 (interactive 888 (interactive
469 (list (read-input-method-name 889 (list (read-input-method-name
470 "Describe input method (default, current choice): "))) 890 "Describe input method (default, current choice): ")))
471 (if (and input-method (symbolp input-method)) 891 (if (and input-method (symbolp input-method))
472 (setq input-method (symbol-name input-method))) 892 (setq input-method (symbol-name input-method)))
482 (if current-input-method 902 (if current-input-method
483 (if (and (symbolp describe-current-input-method-function) 903 (if (and (symbolp describe-current-input-method-function)
484 (fboundp describe-current-input-method-function)) 904 (fboundp describe-current-input-method-function))
485 (funcall describe-current-input-method-function) 905 (funcall describe-current-input-method-function)
486 (message "No way to describe the current input method `%s'" 906 (message "No way to describe the current input method `%s'"
487 (cdr current-input-method)) 907 current-input-method)
488 (ding)) 908 (ding))
489 (error "No input method is activated now"))) 909 (error "No input method is activated now")))
490 910
491 (defun read-multilingual-string (prompt &optional initial-input 911 (defun read-multilingual-string (prompt &optional initial-input input-method)
492 input-method)
493 "Read a multilingual string from minibuffer, prompting with string PROMPT. 912 "Read a multilingual string from minibuffer, prompting with string PROMPT.
494 The input method selected last time is activated in minibuffer. 913 The input method selected last time is activated in minibuffer.
495 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer 914 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer
496 initially. 915 initially.
497 Optional 3rd argument INPUT-METHOD specifies the input method 916 Optional 3rd argument INPUT-METHOD specifies the input method
498 to be activated instead of the one selected last time. It is a symbol 917 to be activated instead of the one selected last time. It is a symbol
499 or a string." 918 or a string."
500 (setq input-method 919 (setq input-method
501 (or input-method 920 (or input-method
921 current-input-method
502 default-input-method 922 default-input-method
503 (read-input-method-name "Input method: " nil t))) 923 (read-input-method-name "Input method: " nil t)))
504 (if (and input-method (symbolp input-method)) 924 (if (and input-method (symbolp input-method))
505 (setq input-method (symbol-name input-method))) 925 (setq input-method (symbol-name input-method)))
506 (let ((current-input-method input-method)) 926 (let ((prev-input-method current-input-method))
507 ;; FSFmacs 927 (unwind-protect
508 ;; (read-string prompt initial-input nil nil t))) 928 (progn
509 (read-string prompt initial-input nil))) 929 (activate-input-method input-method)
930 ;; FSF Emacs
931 ;; (read-string prompt initial-input nil nil t)
932 (read-string prompt initial-input nil))
933 (activate-input-method prev-input-method))))
510 934
511 ;; Variables to control behavior of input methods. All input methods 935 ;; Variables to control behavior of input methods. All input methods
512 ;; should react to these variables. 936 ;; should react to these variables.
513 937
514 (defcustom input-method-verbose-flag t 938 (defcustom input-method-verbose-flag 'default
515 "*If this flag is non-nil, input methods give extra guidance. 939 "*A flag to control extra guidance given by input methods.
940 The value should be nil, t, `complex-only', or `default'.
516 941
517 The extra guidance is done by showing list of available keys in echo 942 The extra guidance is done by showing list of available keys in echo
518 area. 943 area. When you use the input method in the minibuffer, the guidance
519 944 is shown at the bottom short window (split from the existing window).
520 For complex input methods such as `chinese-py' and `japanese', 945
521 when you use the input method in the minibuffer, the guidance is 946 If the value is t, extra guidance is always given, if the value is
522 shown at the bottom short window (split from the existing window). 947 nil, extra guidance is always suppressed.
523 For simple input methods, guidance is not shown 948
524 when you are in the minibuffer." 949 If the value is `complex-only', only complex input methods such as
525 :type 'boolean 950 `chinese-py' and `japanese' give extra guidance.
951
952 If the value is `default', complex input methods always give extra
953 guidance, but simple input methods give it only when you are not in
954 the minibuffer.
955
956 See also the variable `input-method-highlight-flag'."
957 :type '(choice (const t) (const nil) (const complex-only) (const default))
526 :group 'mule) 958 :group 'mule)
527 959
528 (defcustom input-method-highlight-flag t 960 (defcustom input-method-highlight-flag t
529 "*If this flag is non-nil, input methods highlight partially-entered text. 961 "*If this flag is non-nil, input methods highlight partially-entered text.
530 For instance, while you are in the middle of a Quail input method sequence, 962 For instance, while you are in the middle of a Quail input method sequence,
531 the text inserted so far is temporarily underlined. 963 the text inserted so far is temporarily underlined.
532 The underlining goes away when you finish or abort the input method sequence." 964 The underlining goes away when you finish or abort the input method sequence.
965 See also the variable `input-method-verbose-flag'."
533 :type 'boolean 966 :type 'boolean
534 :group 'mule) 967 :group 'mule)
535 968
536 (defvar input-method-activate-hook nil 969 (defvar input-method-activate-hook nil
537 "Normal hook run just after an input method is activated. 970 "Normal hook run just after an input method is activated.
541 974
542 (defvar input-method-inactivate-hook nil 975 (defvar input-method-inactivate-hook nil
543 "Normal hook run just after an input method is inactivated. 976 "Normal hook run just after an input method is inactivated.
544 977
545 The variable `current-input-method' still keeps the input method name 978 The variable `current-input-method' still keeps the input method name
546 just inacitvated.") 979 just inactivated.")
547 980
548 (defvar input-method-after-insert-chunk-hook nil 981 (defvar input-method-after-insert-chunk-hook nil
549 "Normal hook run just after an input method insert some chunk of text.") 982 "Normal hook run just after an input method insert some chunk of text.")
983
984 (defvar input-method-exit-on-first-char nil
985 "This flag controls a timing when an input method returns.
986 Usually, the input method does not return while there's a possibility
987 that it may find a different translation if a user types another key.
988 But, it this flag is non-nil, the input method returns as soon as
989 the current key sequence gets long enough to have some valid translation.")
990
991 (defvar input-method-use-echo-area nil
992 "This flag controls how an input method shows an intermediate key sequence.
993 Usually, the input method inserts the intermediate key sequence,
994 or candidate translations corresponding to the sequence,
995 at point in the current buffer.
996 But, if this flag is non-nil, it displays them in echo area instead.")
550 997
551 (defvar input-method-exit-on-invalid-key nil 998 (defvar input-method-exit-on-invalid-key nil
552 "This flag controls the behaviour of an input method on invalid key input. 999 "This flag controls the behaviour of an input method on invalid key input.
553 Usually, when a user types a key which doesn't start any character 1000 Usually, when a user types a key which doesn't start any character
554 handled by the input method, the key is handled by turning off the 1001 handled by the input method, the key is handled by turning off the
555 input method temporalily. After the key is handled, the input method is 1002 input method temporarily. After that key, the input method is re-enabled.
556 back on.
557 But, if this flag is non-nil, the input method is never back on.") 1003 But, if this flag is non-nil, the input method is never back on.")
558 1004
559 1005
1006 (defvar set-language-environment-hook nil
1007 "Normal hook run after some language environment is set.
1008
1009 When you set some hook function here, that effect usually should not
1010 be inherited to another language environment. So, you had better set
1011 another function in `exit-language-environment-hook' (which see) to
1012 cancel the effect.")
1013
1014 (defvar exit-language-environment-hook nil
1015 "Normal hook run after exiting from some language environment.
1016 When this hook is run, the variable `current-language-environment'
1017 is still bound to the language environment being exited.
1018
1019 This hook is mainly used for canceling the effect of
1020 `set-language-environment-hook' (which-see).")
1021
1022 (put 'setup-specified-language-environment 'apropos-inhibit t)
1023
560 (defun setup-specified-language-environment () 1024 (defun setup-specified-language-environment ()
561 "Set up multi-lingual environment convenient for the specified language." 1025 "Switch to a specified language environment."
562 (interactive) 1026 (interactive)
563 (let (language-name) 1027 (let (language-name)
564 (if (and (symbolp last-command-event) 1028 (if (and (symbolp last-command-event)
565 (or (not (eq last-command-event 'Default)) 1029 (or (not (eq last-command-event 'Default))
566 (setq last-command-event 'English)) 1030 (setq last-command-event 'English))
567 (setq language-name (symbol-name last-command-event))) 1031 (setq language-name (symbol-name last-command-event)))
568 (set-language-environment language-name) 1032 (set-language-environment language-name)
569 (error "Bogus calling sequence")))) 1033 (error "Bogus calling sequence"))))
570 1034
571 (defvar current-language-environment "English" 1035 (defcustom current-language-environment "English"
572 "The last language environment specified with `set-language-environment'.") 1036 "The last language environment specified with `set-language-environment'.
1037 This variable should be set only with \\[customize], which is equivalent
1038 to using the function `set-language-environment'."
1039 :link '(custom-manual "(emacs)Language Environments")
1040 :set (lambda (symbol value) (set-language-environment value))
1041 :get (lambda (x)
1042 (or (car-safe (assoc-ignore-case
1043 (if (symbolp current-language-environment)
1044 (symbol-name current-language-environment)
1045 current-language-environment)
1046 language-info-alist))
1047 "English"))
1048 :type (cons 'choice (mapcar (lambda (lang)
1049 (list 'const (car lang)))
1050 language-info-alist))
1051 :initialize 'custom-initialize-default
1052 :group 'mule
1053 :type 'string)
1054
1055 (defun reset-language-environment ()
1056 "Reset multilingual environment of Emacs to the default status.
1057
1058 The default status is as follows:
1059
1060 The default value of buffer-file-coding-system is nil.
1061 The default coding system for process I/O is nil.
1062 The default value for the command `set-terminal-coding-system' is nil.
1063 The default value for the command `set-keyboard-coding-system' is nil.
1064
1065 The order of priorities of coding categories and the coding system
1066 bound to each category are as follows
1067 coding category coding system
1068 --------------------------------------------------
1069 iso-8-2 iso-8859-1
1070 iso-8-1 iso-8859-1
1071 iso-7 iso-2022-7bit
1072 iso-lock-shift iso-2022-lock
1073 iso-8-designate iso-2022-8bit-ss2
1074 no-conversion raw-text
1075 shift-jis shift_jis
1076 big5 big5
1077 ucs-4 ----
1078 utf-8 ----
1079 "
1080 (interactive)
1081 ;; This function formerly set default-enable-multibyte-characters to t,
1082 ;; but that is incorrect. It should not alter the unibyte/multibyte choice.
1083
1084 (set-coding-category-system 'iso-7 'iso-2022-7bit)
1085 (set-coding-category-system 'iso-8-1 'iso-8859-1)
1086 (set-coding-category-system 'iso-8-2 'iso-8859-1)
1087 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
1088 (set-coding-category-system 'iso-8-designate 'iso-2022-8bit-ss2)
1089 (set-coding-category-system 'no-conversion 'raw-text)
1090 (set-coding-category-system 'shift-jis 'shift_jis)
1091 (set-coding-category-system 'big5 'big5)
1092 (cond ((eq (coding-system-type (coding-category-system 'utf-8)) 'utf-8)
1093 (set-coding-category-system 'ucs-4 'iso-10646-ucs-4)
1094 (set-coding-category-system 'utf-8 'utf-8)
1095 (set-coding-priority-list
1096 '(iso-8-1
1097 iso-8-2
1098 iso-7
1099 iso-lock-shift
1100 iso-8-designate
1101 utf-8
1102 ucs-4
1103 no-conversion
1104 shift-jis
1105 big5))
1106 )
1107 (t
1108 (set-coding-priority-list
1109 '(iso-8-1
1110 iso-8-2
1111 iso-7
1112 iso-lock-shift
1113 iso-8-designate
1114 no-conversion
1115 shift-jis
1116 big5))
1117 ))
1118
1119 ;; (update-coding-systems-internal)
1120
1121 (set-default-coding-systems nil)
1122 ;; Don't alter the terminal and keyboard coding systems here.
1123 ;; The terminal still supports the same coding system
1124 ;; that it supported a minute ago.
1125 ;;; (set-terminal-coding-system-internal nil)
1126 ;;; (set-keyboard-coding-system-internal nil)
1127
1128 ;; (setq nonascii-translation-table nil
1129 ;; nonascii-insert-offset 0)
1130 )
573 1131
574 (defun set-language-environment (language-name) 1132 (defun set-language-environment (language-name)
575 "Set up multi-lingual environment for using LANGUAGE-NAME. 1133 "Set up multi-lingual environment for using LANGUAGE-NAME.
576 This sets the coding system priority and the default input method 1134 This sets the coding system priority and the default input method
577 and sometimes other things." 1135 and sometimes other things. LANGUAGE-NAME should be a string
578 (interactive (list (read-language-name 'setup-function 1136 which is the name of a language environment. For example, \"Latin-1\"
579 "Set language environment: "))) 1137 specifies the character set for the major languages of Western Europe."
1138 (interactive (list (read-language-name
1139 nil
1140 "Set language environment (default, English): ")))
580 (if language-name 1141 (if language-name
581 (if (symbolp language-name) 1142 (if (symbolp language-name)
582 (setq language-name (symbol-name language-name))) 1143 (setq language-name (symbol-name language-name)))
583 (setq language-name "English")) 1144 (setq language-name "English"))
584 (if (null (get-language-info language-name 'setup-function)) 1145 (or (assoc-ignore-case language-name language-info-alist)
585 (error "Language environment not defined: %S" language-name)) 1146 (error "Language environment not defined: %S" language-name))
586 (funcall (get-language-info language-name 'setup-function)) 1147 (if current-language-environment
587 (setq current-language-environment language-name) 1148 (let ((func (get-language-info current-language-environment
1149 'exit-function)))
1150 (run-hooks 'exit-language-environment-hook)
1151 (if (fboundp func) (funcall func))))
1152 (let ((default-eol-type (coding-system-eol-type
1153 default-buffer-file-coding-system)))
1154 (reset-language-environment)
1155
1156 (setq current-language-environment language-name)
1157 (set-language-environment-coding-systems language-name default-eol-type))
1158 (let ((input-method (get-language-info language-name 'input-method)))
1159 (when input-method
1160 (setq default-input-method input-method)
1161 (if input-method-history
1162 (setq input-method-history
1163 (cons input-method
1164 (delete input-method input-method-history))))))
1165 ;; (let ((nonascii (get-language-info language-name 'nonascii-translation))
1166 ;; (dos-table
1167 ;; (if (eq window-system 'pc)
1168 ;; (intern
1169 ;; (concat "cp" dos-codepage "-nonascii-translation-table")))))
1170 ;; (cond
1171 ;; ((char-table-p nonascii)
1172 ;; (setq nonascii-translation-table nonascii))
1173 ;; ((and (eq window-system 'pc) (boundp dos-table))
1174 ;; ;; DOS terminals' default is to use a special non-ASCII translation
1175 ;; ;; table as appropriate for the installed codepage.
1176 ;; (setq nonascii-translation-table (symbol-value dos-table)))
1177 ;; ((charsetp nonascii)
1178 ;; (setq nonascii-insert-offset (- (make-char nonascii) 128)))))
1179
1180 ;; (setq charset-origin-alist
1181 ;; (get-language-info language-name 'charset-origin-alist))
1182
1183 ;; Unibyte setups if necessary.
1184 ;; (unless default-enable-multibyte-characters
1185 ;; ;; Syntax and case table.
1186 ;; (let ((syntax (get-language-info language-name 'unibyte-syntax)))
1187 ;; (if syntax
1188 ;; (let ((set-case-syntax-set-multibyte nil))
1189 ;; (load syntax nil t))
1190 ;; ;; No information for syntax and case. Reset to the defaults.
1191 ;; (let ((syntax-table (standard-syntax-table))
1192 ;; (case-table (standard-case-table))
1193 ;; (ch (if (eq window-system 'pc) 128 160)))
1194 ;; (while (< ch 256)
1195 ;; (modify-syntax-entry ch " " syntax-table)
1196 ;; (aset case-table ch ch)
1197 ;; (setq ch (1+ ch)))
1198 ;; (set-char-table-extra-slot case-table 0 nil)
1199 ;; (set-char-table-extra-slot case-table 1 nil)
1200 ;; (set-char-table-extra-slot case-table 2 nil))
1201 ;; (set-standard-case-table (standard-case-table))
1202 ;; (let ((list (buffer-list)))
1203 ;; (while list
1204 ;; (with-current-buffer (car list)
1205 ;; (set-case-table (standard-case-table)))
1206 ;; (setq list (cdr list))))))
1207 ;; ;; Display table and coding system for terminal.
1208 ;; (let ((coding (get-language-info language-name 'unibyte-display)))
1209 ;; (if coding
1210 ;; (standard-display-european-internal)
1211 ;; (standard-display-default (if (eq window-system 'pc) 128 160) 255)
1212 ;; (aset standard-display-table 146 nil))
1213 ;; (or (eq window-system 'pc)
1214 ;; (set-terminal-coding-system coding))))
1215
1216 (let ((required-features (get-language-info language-name 'features)))
1217 (while required-features
1218 (require (car required-features))
1219 (setq required-features (cdr required-features))))
1220 (let ((func (get-language-info language-name 'setup-function)))
1221 (if (fboundp func)
1222 (funcall func)))
1223 (run-hooks 'set-language-environment-hook)
588 (force-mode-line-update t)) 1224 (force-mode-line-update t))
1225
1226 ;; (defun standard-display-european-internal ()
1227 ;; ;; Actually set up direct output of non-ASCII characters.
1228 ;; (standard-display-8bit (if (eq window-system 'pc) 128 160) 255)
1229 ;; ;; Unibyte Emacs on MS-DOS wants to display all 8-bit characters with
1230 ;; ;; the native font, and codes 160 and 146 stand for something very
1231 ;; ;; different there.
1232 ;; (or (and (eq window-system 'pc) (not default-enable-multibyte-characters))
1233 ;; (progn
1234 ;; ;; Make non-line-break space display as a plain space.
1235 ;; ;; Most X fonts do the wrong thing for code 160.
1236 ;; (aset standard-display-table 160 [32])
1237 ;; ;; Most Windows programs send out apostrophe's as \222. Most X fonts
1238 ;; ;; don't contain a character at that position. Map it to the ASCII
1239 ;; ;; apostrophe.
1240 ;; (aset standard-display-table 146 [39]))))
1241
1242 (defun set-language-environment-coding-systems (language-name
1243 &optional eol-type)
1244 "Do various coding system setups for language environment LANGUAGE-NAME.
1245
1246 The optional arg EOL-TYPE specifies the eol-type of the default value
1247 of buffer-file-coding-system set by this function."
1248 (let* ((priority (get-language-info language-name 'coding-priority))
1249 (default-coding (car priority)))
1250 (if priority
1251 (let ((categories (mapcar 'coding-system-category priority))
1252 category checked-categories)
1253 (set-default-coding-systems
1254 (if (memq eol-type '(lf crlf cr unix dos mac))
1255 (coding-system-change-eol-conversion default-coding eol-type)
1256 default-coding))
1257 ;; (setq default-sendmail-coding-system default-coding)
1258 (while priority
1259 (unless (memq (setq category (car categories)) checked-categories)
1260 (set-coding-category-system category (car priority))
1261 (setq checked-categories (cons category checked-categories)))
1262 (setq priority (cdr priority)
1263 categories (cdr categories)))
1264 (set-coding-priority-list (nreverse checked-categories))
1265 ;; (update-coding-systems-internal)
1266 ))))
589 1267
590 ;; Print all arguments with `princ', then print "\n". 1268 ;; Print all arguments with `princ', then print "\n".
591 (defsubst princ-list (&rest args) 1269 (defsubst princ-list (&rest args)
592 (while args (princ (car args)) (setq args (cdr args))) 1270 (while args (princ (car args)) (setq args (cdr args)))
593 (princ "\n")) 1271 (princ "\n"))
1272
1273 (put 'describe-specified-language-support 'apropos-inhibit t)
594 1274
595 ;; Print a language specific information such as input methods, 1275 ;; Print a language specific information such as input methods,
596 ;; charsets, and coding systems. This function is intended to be 1276 ;; charsets, and coding systems. This function is intended to be
597 ;; called from the menu: 1277 ;; called from the menu:
598 ;; [menu-bar mule describe-language-environment LANGUAGE] 1278 ;; [menu-bar mule describe-language-environment LANGUAGE]
609 (defun describe-language-environment (language-name) 1289 (defun describe-language-environment (language-name)
610 "Describe how Emacs supports language environment LANGUAGE-NAME." 1290 "Describe how Emacs supports language environment LANGUAGE-NAME."
611 (interactive 1291 (interactive
612 (list (read-language-name 1292 (list (read-language-name
613 'documentation 1293 'documentation
614 "Describe language environment (default, current choise): "))) 1294 "Describe language environment (default, current choice): ")))
615 (if (null language-name) 1295 (if (null language-name)
616 (setq language-name current-language-environment)) 1296 (setq language-name current-language-environment))
617 (if (or (null language-name) 1297 (if (or (null language-name)
618 (null (get-language-info language-name 'documentation))) 1298 (null (get-language-info language-name 'documentation)))
619 (error "No documentation for the specified language")) 1299 (error "No documentation for the specified language"))
620 (if (symbolp language-name) 1300 (if (symbolp language-name)
621 (setq language-name (symbol-name language-name))) 1301 (setq language-name (symbol-name language-name)))
622 (let ((doc (get-language-info language-name 'documentation))) 1302 (let ((doc (get-language-info language-name 'documentation)))
623 (with-output-to-temp-buffer "*Help*" 1303 (with-output-to-temp-buffer "*Help*"
1304 (princ-list language-name " language environment" "\n")
624 (if (stringp doc) 1305 (if (stringp doc)
625 (progn 1306 (progn
626 (princ-list doc) 1307 (princ-list doc)
627 (terpri))) 1308 (terpri)))
628 (let ((str (get-language-info language-name 'sample-text))) 1309 (let ((str (get-language-info language-name 'sample-text)))
629 (if (stringp str) 1310 (if (stringp str)
630 (progn 1311 (progn
631 (princ "Sample text:\n") 1312 (princ "Sample text:\n")
632 (princ-list " " str) 1313 (princ-list " " str)
633 (terpri)))) 1314 (terpri))))
634 (princ "Input methods:\n") 1315 (let ((input-method (get-language-info language-name 'input-method))
635 (let ((l input-method-alist)) 1316 (l (copy-sequence input-method-alist)))
636 (while l 1317 (princ "Input methods")
1318 (when input-method
1319 (princ (format " (default, %s)" input-method))
1320 (setq input-method (assoc input-method input-method-alist))
1321 (setq l (cons input-method (delete input-method l))))
1322 (princ ":\n")
1323 (while l
637 (if (string= language-name (nth 1 (car l))) 1324 (if (string= language-name (nth 1 (car l)))
638 (princ-list " " (car (car l)) 1325 (princ-list " " (car (car l))
639 (format " (`%s' in mode line)" (nth 3 (car l))))) 1326 (format " (`%s' in mode line)" (nth 3 (car l)))))
640 (setq l (cdr l)))) 1327 (setq l (cdr l))))
641 (terpri) 1328 (terpri)
654 (princ-list " nothing specific to " language-name) 1341 (princ-list " nothing specific to " language-name)
655 (while l 1342 (while l
656 (princ ; (format " %s (`%c' in mode line):\n\t%s\n" 1343 (princ ; (format " %s (`%c' in mode line):\n\t%s\n"
657 ;; In XEmacs, `coding-system-mnemonic' returns string. 1344 ;; In XEmacs, `coding-system-mnemonic' returns string.
658 (format " %s (`%s' in mode line):\n\t%s\n" 1345 (format " %s (`%s' in mode line):\n\t%s\n"
659 (car l) 1346 (car l)
660 (coding-system-mnemonic (car l)) 1347 (coding-system-mnemonic (car l))
661 (coding-system-doc-string (car l)))) 1348 (coding-system-doc-string (car l))))
1349 ;; (let ((aliases (coding-system-get (car l) 'alias-coding-systems)))
1350 ;; (when aliases
1351 ;; (princ "\t")
1352 ;; (princ (cons 'alias: (cdr aliases)))
1353 ;; (terpri)))
662 (setq l (cdr l)))))))) 1354 (setq l (cdr l))))))))
663 1355
664 ;;; Charset property 1356 ;;; Charset property
665 1357
666 ;; (defsubst get-charset-property (charset propname) 1358 ;; (defsubst get-charset-property (charset propname)
676 ;; (plist-put (charset-plist charset) propname value))) 1368 ;; (plist-put (charset-plist charset) propname value)))
677 1369
678 (defvar char-code-property-table 1370 (defvar char-code-property-table
679 (make-char-table 'generic) 1371 (make-char-table 'generic)
680 "Char-table containing a property list of each character code. 1372 "Char-table containing a property list of each character code.
681 ;; 1373
682 See also the documentation of `get-char-code-property' and 1374 See also the documentation of `get-char-code-property' and
683 `put-char-code-property'") 1375 `put-char-code-property'")
684 ;; (let ((plist (aref char-code-property-table char))) 1376 ;; (let ((plist (aref char-code-property-table char)))
685 (defun get-char-code-property (char propname) 1377 (defun get-char-code-property (char propname)
686 "Return the value of CHAR's PROPNAME property in `char-code-property-table'." 1378 "Return the value of CHAR's PROPNAME property in `char-code-property-table'."
697 (if slot 1389 (if slot
698 (setcar (cdr slot) value) 1390 (setcar (cdr slot) value)
699 (nconc plist (list propname value)))) 1391 (nconc plist (list propname value))))
700 (put-char-table char (list propname value) char-code-property-table) 1392 (put-char-table char (list propname value) char-code-property-table)
701 ))) 1393 )))
702 ;; (setcar (cdr slot) value) 1394
703 ;; (nconc plist (list propname value)))) 1395
704 ;; (aset char-code-property-table char (list propname value))))) 1396 ;; Pretty description of encoded string
1397
1398 ;; Alist of ISO 2022 control code vs the corresponding mnemonic string.
1399 ;; (defvar iso-2022-control-alist
1400 ;; '((?\x1b . "ESC")
1401 ;; (?\x0e . "SO")
1402 ;; (?\x0f . "SI")
1403 ;; (?\x8e . "SS2")
1404 ;; (?\x8f . "SS3")
1405 ;; (?\x9b . "CSI")))
1406
1407 ;; (defun encoded-string-description (str coding-system)
1408 ;; "Return a pretty description of STR that is encoded by CODING-SYSTEM."
1409 ;; (setq str (string-as-unibyte str))
1410 ;; (let ((char (aref str 0))
1411 ;; desc)
1412 ;; (when (< char 128)
1413 ;; (setq desc (or (cdr (assq char iso-2022-control-alist))
1414 ;; (char-to-string char)))
1415 ;; (let ((i 1)
1416 ;; (len (length str)))
1417 ;; (while (< i len)
1418 ;; (setq char (aref str i))
1419 ;; (if (>= char 128)
1420 ;; (setq desc nil i len)
1421 ;; (setq desc (concat desc " "
1422 ;; (or (cdr (assq char iso-2022-control-alist))
1423 ;; (char-to-string char)))
1424 ;; i (1+ i))))))
1425 ;; (or desc
1426 ;; (mapconcat (function (lambda (x) (format "0x%02x" x))) str " "))))
1427
1428 ;; (defun encode-coding-char (char coding-system)
1429 ;; "Encode CHAR by CODING-SYSTEM and return the resulting string.
1430 ;; If CODING-SYSTEM can't safely encode CHAR, return nil."
1431 ;; (if (cmpcharp char)
1432 ;; (setq char (car (decompose-composite-char char 'list))))
1433 ;; (let ((str1 (char-to-string char))
1434 ;; (str2 (make-string 2 char))
1435 ;; (safe-charsets (and coding-system
1436 ;; (coding-system-get coding-system 'safe-charsets)))
1437 ;; enc1 enc2 i1 i2)
1438 ;; (when (or (eq safe-charsets t)
1439 ;; (memq (char-charset char) safe-charsets))
1440 ;; ;; We must find the encoded string of CHAR. But, just encoding
1441 ;; ;; CHAR will put extra control sequences (usually to designate
1442 ;; ;; ASCII charset) at the tail if type of CODING is ISO 2022.
1443 ;; ;; To exclude such tailing bytes, we at first encode one-char
1444 ;; ;; string and two-char string, then check how many bytes at the
1445 ;; ;; tail of both encoded strings are the same.
1446 ;;
1447 ;; (setq enc1 (string-as-unibyte (encode-coding-string str1 coding-system))
1448 ;; i1 (length enc1)
1449 ;; enc2 (string-as-unibyte (encode-coding-string str2 coding-system))
1450 ;; i2 (length enc2))
1451 ;; (while (and (> i1 0) (= (aref enc1 (1- i1)) (aref enc2 (1- i2))))
1452 ;; (setq i1 (1- i1) i2 (1- i2)))
1453 ;;
1454 ;; ;; Now (substring enc1 i1) and (substring enc2 i2) are the same,
1455 ;; ;; and they are the extra control sequences at the tail to
1456 ;; ;; exclude.
1457 ;; (substring enc2 0 i2))))
1458
705 1459
706 ;;; mule-cmds.el ends here 1460 ;;; mule-cmds.el ends here