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Import from CVS: tag r21-2-19
author cvs
date Mon, 13 Aug 2007 11:25:01 +0200
parents da8ed4261e83
children 11054d720c21
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421:fff06e11db74 422:95016f13131a
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))
101 (add-hook 'comint-exec-hook 171 (add-hook 'comint-exec-hook
106 'append) 176 'append)
107 (setq file-name-coding-system coding-system)) 177 (setq file-name-coding-system coding-system))
108 178
109 (defun prefer-coding-system (coding-system) 179 (defun prefer-coding-system (coding-system)
110 "Add CODING-SYSTEM at the front of the priority list for automatic detection. 180 "Add CODING-SYSTEM at the front of the priority list for automatic detection.
111 This also sets the following coding systems to CODING-SYSTEM: 181 This also sets the following coding systems:
112 o coding system of a newly created buffer 182 o coding system of a newly created buffer
113 o default coding system for terminal output 183 o default coding system for terminal output
114 o default coding system for keyboard input 184 o default coding system for keyboard input
115 o default coding system for subprocess I/O" 185 o default coding system for converting file names.
186
187 If CODING-SYSTEM specifies a certain type of EOL conversion, the coding
188 systems set by this function will use that type of EOL conversion.
189
190 This command does not change the default value of terminal coding system
191 for MS-DOS terminal, because DOS terminals only support a single coding
192 system, and Emacs automatically sets the default to that coding system at
193 startup."
116 (interactive "zPrefer coding system: ") 194 (interactive "zPrefer coding system: ")
117 (if (not (and coding-system (coding-system-p coding-system))) 195 (if (not (and coding-system (find-coding-system coding-system)))
118 (error "Invalid coding system `%s'" coding-system)) 196 (error "Invalid coding system `%s'" coding-system))
119 (let ((coding-category (coding-system-category coding-system)) 197 (let ((coding-category (coding-system-category coding-system))
120 (parent (coding-system-parent coding-system))) 198 (base (coding-system-base coding-system))
199 (eol-type (coding-system-eol-type coding-system)))
121 (if (not coding-category) 200 (if (not coding-category)
122 ;; CODING-SYSTEM is no-conversion or undecided. 201 ;; CODING-SYSTEM is no-conversion or undecided.
123 (error "Can't prefer the coding system `%s'" coding-system)) 202 (error "Can't prefer the coding system `%s'" coding-system))
124 (set coding-category (or parent coding-system)) 203 (set-coding-category-system coding-category (or base coding-system))
125 (if (not (eq coding-category (car coding-category-list))) 204 ;; (update-coding-systems-internal)
205 (or (eq coding-category (car (coding-category-list)))
126 ;; We must change the order. 206 ;; We must change the order.
127 (setq coding-category-list 207 (set-coding-priority-list (list coding-category)))
128 (cons coding-category 208 (if (and base (interactive-p))
129 (delq coding-category coding-category-list)))) 209 (message "Highest priority is set to %s (base of %s)"
130 (if (and parent (interactive-p)) 210 base coding-system))
131 (message "Highest priority is set to %s (parent of %s)" 211 ;; If they asked for specific EOL conversion, honor that.
132 parent coding-system)) 212 (if (memq eol-type '(lf crlf mac))
133 (set-default-coding-systems (or parent coding-system)))) 213 (setq coding-system
134 214 (coding-system-change-eol-conversion base eol-type))
215 (setq coding-system base))
216 (set-default-coding-systems coding-system)))
217
218 ;; (defun find-coding-systems-region-subset-p (list1 list2)
219 ;; "Return non-nil if all elements in LIST1 are included in LIST2.
220 ;; Comparison done with EQ."
221 ;; (catch 'tag
222 ;; (while list1
223 ;; (or (memq (car list1) list2)
224 ;; (throw 'tag nil))
225 ;; (setq list1 (cdr list1)))
226 ;; t))
227
228 ;; (defun find-coding-systems-region (from to)
229 ;; "Return a list of proper coding systems to encode a text between FROM and TO.
230 ;; All coding systems in the list can safely encode any multibyte characters
231 ;; in the text.
232 ;;
233 ;; If the text contains no multibyte characters, return a list of a single
234 ;; element `undecided'."
235 ;; (find-coding-systems-for-charsets (find-charset-region from to)))
236
237 ;; (defun find-coding-systems-string (string)
238 ;; "Return a list of proper coding systems to encode STRING.
239 ;; All coding systems in the list can safely encode any multibyte characters
240 ;; in STRING.
241 ;;
242 ;; If STRING contains no multibyte characters, return a list of a single
243 ;; element `undecided'."
244 ;; (find-coding-systems-for-charsets (find-charset-string string)))
245
246 ;; (defun find-coding-systems-for-charsets (charsets)
247 ;; "Return a list of proper coding systems to encode characters of CHARSETS.
248 ;; CHARSETS is a list of character sets."
249 ;; (if (or (null charsets)
250 ;; (and (= (length charsets) 1)
251 ;; (eq 'ascii (car charsets))))
252 ;; '(undecided)
253 ;; (setq charsets (delq 'composition charsets))
254 ;; (let ((l (coding-system-list 'base-only))
255 ;; (charset-preferred-codings
256 ;; (mapcar (function
257 ;; (lambda (x)
258 ;; (if (eq x 'unknown)
259 ;; 'raw-text
260 ;; (get-charset-property x 'preferred-coding-system))))
261 ;; charsets))
262 ;; (priorities (mapcar (function (lambda (x) (symbol-value x)))
263 ;; coding-category-list))
264 ;; codings coding safe)
265 ;; (if (memq 'unknown charsets)
266 ;; ;; The region contains invalid multibyte characters.
267 ;; (setq l '(raw-text)))
268 ;; (while l
269 ;; (setq coding (car l) l (cdr l))
270 ;; (if (and (setq safe (coding-system-get coding 'safe-charsets))
271 ;; (or (eq safe t)
272 ;; (find-coding-systems-region-subset-p charsets safe)))
273 ;; ;; We put the higher priority to coding systems included
274 ;; ;; in CHARSET-PREFERRED-CODINGS, and within them, put the
275 ;; ;; higher priority to coding systems which support smaller
276 ;; ;; number of charsets.
277 ;; (let ((priority
278 ;; (+ (if (coding-system-get coding 'mime-charset) 4096 0)
279 ;; (lsh (length (memq coding priorities)) 7)
280 ;; (if (memq coding charset-preferred-codings) 64 0)
281 ;; (if (> (coding-system-type coding) 0) 32 0)
282 ;; (if (consp safe) (- 32 (length safe)) 0))))
283 ;; (setq codings (cons (cons priority coding) codings)))))
284 ;; (mapcar 'cdr
285 ;; (sort codings (function (lambda (x y) (> (car x) (car y))))))
286 ;; )))
287
288 ;; (defun find-multibyte-characters (from to &optional maxcount excludes)
289 ;; "Find multibyte characters in the region specified by FROM and TO.
290 ;; If FROM is a string, find multibyte characters in the string.
291 ;; The return value is an alist of the following format:
292 ;; ((CHARSET COUNT CHAR ...) ...)
293 ;; where
294 ;; CHARSET is a character set,
295 ;; COUNT is a number of characters,
296 ;; CHARs are found characters of the character set.
297 ;; Optional 3rd arg MAXCOUNT limits how many CHARs are put in the above list.
298 ;; Optional 4th arg EXCLUDE is a list of character sets to be ignored.
299 ;;
300 ;; For invalid characters, CHARs are actually strings."
301 ;; (let ((chars nil)
302 ;; charset char)
303 ;; (if (stringp from)
304 ;; (let ((idx 0))
305 ;; (while (setq idx (string-match "[^\000-\177]" from idx))
306 ;; (setq char (aref from idx)
307 ;; charset (char-charset char))
308 ;; (if (eq charset 'unknown)
309 ;; (setq char (match-string 0)))
310 ;; (if (or (eq charset 'unknown)
311 ;; (not (or (eq excludes t) (memq charset excludes))))
312 ;; (let ((slot (assq charset chars)))
313 ;; (if slot
314 ;; (if (not (memq char (nthcdr 2 slot)))
315 ;; (let ((count (nth 1 slot)))
316 ;; (setcar (cdr slot) (1+ count))
317 ;; (if (or (not maxcount) (< count maxcount))
318 ;; (nconc slot (list char)))))
319 ;; (setq chars (cons (list charset 1 char) chars)))))
320 ;; (setq idx (1+ idx))))
321 ;; (save-excursion
322 ;; (goto-char from)
323 ;; (while (re-search-forward "[^\000-\177]" to t)
324 ;; (setq char (preceding-char)
325 ;; charset (char-charset char))
326 ;; (if (eq charset 'unknown)
327 ;; (setq char (match-string 0)))
328 ;; (if (or (eq charset 'unknown)
329 ;; (not (or (eq excludes t) (memq charset excludes))))
330 ;; (let ((slot (assq charset chars)))
331 ;; (if slot
332 ;; (if (not (member char (nthcdr 2 slot)))
333 ;; (let ((count (nth 1 slot)))
334 ;; (setcar (cdr slot) (1+ count))
335 ;; (if (or (not maxcount) (< count maxcount))
336 ;; (nconc slot (list char)))))
337 ;; (setq chars (cons (list charset 1 char) chars))))))))
338 ;; (nreverse chars)))
339
340 ;; (defvar last-coding-system-specified nil
341 ;; "Most recent coding system explicitly specified by the user when asked.
342 ;; This variable is set whenever Emacs asks the user which coding system
343 ;; to use in order to write a file. If you set it to nil explicitly,
344 ;; then call `write-region', then afterward this variable will be non-nil
345 ;; only if the user was explicitly asked and specified a coding system.")
346
347 ;; (defun select-safe-coding-system (from to &optional default-coding-system)
348 ;; "Ask a user to select a safe coding system from candidates.
349 ;; The candidates of coding systems which can safely encode a text
350 ;; between FROM and TO are shown in a popup window.
351 ;;
352 ;; Optional arg DEFAULT-CODING-SYSTEM specifies a coding system to be
353 ;; checked at first. If omitted, buffer-file-coding-system of the
354 ;; current buffer is used.
355 ;;
356 ;; If the text can be encoded safely by DEFAULT-CODING-SYSTEM, it is
357 ;; returned without any user interaction.
358 ;;
359 ;; Kludgy feature: if FROM is a string, the string is the target text,
360 ;; and TO is ignored."
361 ;; (or default-coding-system
362 ;; (setq default-coding-system buffer-file-coding-system))
363 ;; (let* ((charsets (if (stringp from) (find-charset-string from)
364 ;; (find-charset-region from to)))
365 ;; (safe-coding-systems (find-coding-systems-for-charsets charsets)))
366 ;; (if (or (not enable-multibyte-characters)
367 ;; (eq (car safe-coding-systems) 'undecided)
368 ;; (eq default-coding-system 'no-conversion)
369 ;; (and default-coding-system
370 ;; (memq (coding-system-base default-coding-system)
371 ;; safe-coding-systems)))
372 ;; default-coding-system
373 ;;
374 ;; ;; At first, change each coding system to the corresponding
375 ;; ;; mime-charset name if it is also a coding system.
376 ;; (let ((l safe-coding-systems)
377 ;; mime-charset)
378 ;; (while l
379 ;; (setq mime-charset (coding-system-get (car l) 'mime-charset))
380 ;; (if (and mime-charset (coding-system-p mime-charset))
381 ;; (setcar l mime-charset))
382 ;; (setq l (cdr l))))
383 ;;
384 ;; (let ((non-safe-chars (find-multibyte-characters
385 ;; from to 3
386 ;; (and default-coding-system
387 ;; (coding-system-get default-coding-system
388 ;; 'safe-charsets))))
389 ;; show-position overlays)
390 ;; (save-excursion
391 ;; ;; Highlight characters that default-coding-system can't encode.
392 ;; (when (integerp from)
393 ;; (goto-char from)
394 ;; (let ((found nil))
395 ;; (while (and (not found)
396 ;; (re-search-forward "[^\000-\177]" to t))
397 ;; (setq found (assq (char-charset (preceding-char))
398 ;; non-safe-chars))))
399 ;; (forward-line -1)
400 ;; (setq show-position (point))
401 ;; (save-excursion
402 ;; (while (and (< (length overlays) 256)
403 ;; (re-search-forward "[^\000-\177]" to t))
404 ;; (let* ((char (preceding-char))
405 ;; (charset (char-charset char)))
406 ;; (when (assq charset non-safe-chars)
407 ;; (setq overlays (cons (make-overlay (1- (point)) (point))
408 ;; overlays))
409 ;; (overlay-put (car overlays) 'face 'highlight))))))
410 ;;
411 ;; ;; At last, ask a user to select a proper coding system.
412 ;; (unwind-protect
413 ;; (save-window-excursion
414 ;; (when show-position
415 ;; ;; At first, be sure to show the current buffer.
416 ;; (set-window-buffer (selected-window) (current-buffer))
417 ;; (set-window-start (selected-window) show-position))
418 ;; ;; Then, show a helpful message.
419 ;; (with-output-to-temp-buffer "*Warning*"
420 ;; (save-excursion
421 ;; (set-buffer standard-output)
422 ;; (insert "The target text contains the following non ASCII character(s):\n")
423 ;; (let ((len (length non-safe-chars))
424 ;; (shown 0))
425 ;; (while (and non-safe-chars (< shown 3))
426 ;; (when (> (length (car non-safe-chars)) 2)
427 ;; (setq shown (1+ shown))
428 ;; (insert (format "%25s: " (car (car non-safe-chars))))
429 ;; (let ((l (nthcdr 2 (car non-safe-chars))))
430 ;; (while l
431 ;; (if (or (stringp (car l)) (char-valid-p (car l)))
432 ;; (insert (car l)))
433 ;; (setq l (cdr l))))
434 ;; (if (> (nth 1 (car non-safe-chars)) 3)
435 ;; (insert "..."))
436 ;; (insert "\n"))
437 ;; (setq non-safe-chars (cdr non-safe-chars)))
438 ;; (if (< shown len)
439 ;; (insert (format "%27s\n" "..."))))
440 ;; (insert (format "\
441 ;; These can't be encoded safely by the coding system %s.
442 ;;
443 ;; Please select one from the following safe coding systems:\n"
444 ;; default-coding-system))
445 ;; (let ((pos (point))
446 ;; (fill-prefix " "))
447 ;; (mapcar (function (lambda (x) (princ " ") (princ x)))
448 ;; safe-coding-systems)
449 ;; (fill-region-as-paragraph pos (point)))))
450 ;;
451 ;; ;; Read a coding system.
452 ;; (let* ((safe-names (mapcar (lambda (x) (list (symbol-name x)))
453 ;; safe-coding-systems))
454 ;; (name (completing-read
455 ;; (format "Select coding system (default %s): "
456 ;; (car safe-coding-systems))
457 ;; safe-names nil t nil nil
458 ;; (car (car safe-names)))))
459 ;; (setq last-coding-system-specified (intern name))
460 ;; (if (integerp (coding-system-eol-type default-coding-system))
461 ;; (setq last-coding-system-specified
462 ;; (coding-system-change-eol-conversion
463 ;; last-coding-system-specified
464 ;; (coding-system-eol-type default-coding-system))))
465 ;; last-coding-system-specified))
466 ;; (kill-buffer "*Warning*")
467 ;; (while overlays
468 ;; (delete-overlay (car overlays))
469 ;; (setq overlays (cdr overlays)))))))))
470
471 ;; (setq select-safe-coding-system-function 'select-safe-coding-system)
472
473 ;; (defun select-message-coding-system ()
474 ;; "Return a coding system to encode the outgoing message of the current buffer.
475 ;; It at first tries the first coding system found in these variables
476 ;; in this order:
477 ;; (1) local value of `buffer-file-coding-system'
478 ;; (2) value of `sendmail-coding-system'
479 ;; (3) value of `default-buffer-file-coding-system'
480 ;; (4) value of `default-sendmail-coding-system'
481 ;; If the found coding system can't encode the current buffer,
482 ;; or none of them are bound to a coding system,
483 ;; it asks the user to select a proper coding system."
484 ;; (let ((coding (or (and (local-variable-p 'buffer-file-coding-system)
485 ;; buffer-file-coding-system)
486 ;; sendmail-coding-system
487 ;; default-buffer-file-coding-system
488 ;; default-sendmail-coding-system)))
489 ;; (if (eq coding 'no-conversion)
490 ;; ;; We should never use no-conversion for outgoing mails.
491 ;; (setq coding nil))
492 ;; (if (fboundp select-safe-coding-system-function)
493 ;; (funcall select-safe-coding-system-function
494 ;; (point-min) (point-max) coding)
495 ;; coding)))
135 496
136 ;;; Language support staffs. 497 ;;; Language support stuff.
137 498
138 (defvar language-info-alist nil 499 (defvar language-info-alist nil
139 "Alist of language names vs the corresponding information of various kind. 500 "Alist of language environment definitions.
140 Each element looks like: 501 Each element looks like:
141 (LANGUAGE-NAME . ((KEY . INFO) ...)) 502 (LANGUAGE-NAME . ((KEY . INFO) ...))
142 where LANGUAGE-NAME is a string, 503 where LANGUAGE-NAME is a string, the name of the language environment,
143 KEY is a symbol denoting the kind of information, 504 KEY is a symbol denoting the kind of information, and
144 INFO is any Lisp object which contains the actual information related 505 INFO is the data associated with KEY.
145 to KEY.") 506 Meaningful values for KEY include
146 507
147 (defun get-language-info (language-name key) 508 documentation value is documentation of what this language environment
148 "Return the information for LANGUAGE-NAME of the kind KEY. 509 is meant for, and how to use it.
149 KEY is a symbol denoting the kind of required information." 510 charset value is a list of the character sets used by this
150 (if (symbolp language-name) 511 language environment.
151 (setq language-name (symbol-name language-name))) 512 sample-text value is one line of text,
152 (let ((lang-slot (assoc-ignore-case language-name language-info-alist))) 513 written using those character sets,
514 appropriate for this language environment.
515 setup-function value is a function to call to switch to this
516 language environment.
517 exit-function value is a function to call to leave this
518 language environment.
519 coding-system value is a list of coding systems that are good
520 for saving text written in this language environment.
521 This list serves as suggestions to the user;
522 in effect, as a kind of documentation.
523 coding-priority value is a list of coding systems for this language
524 environment, in order of decreasing priority.
525 This is used to set up the coding system priority
526 list when you switch to this language environment.
527 input-method value is a default input method for this language
528 environment.
529 features value is a list of features requested in this
530 language environment.
531 tutorial value is a tutorial file name written in the language.")
532
533 (defun get-language-info (lang-env key)
534 "Return information listed under KEY for language environment LANG-ENV.
535 KEY is a symbol denoting the kind of information.
536 For a list of useful values for KEY and their meanings,
537 see `language-info-alist'."
538 (if (symbolp lang-env)
539 (setq lang-env (symbol-name lang-env)))
540 (let ((lang-slot (assoc-ignore-case lang-env language-info-alist)))
153 (if lang-slot 541 (if lang-slot
154 (cdr (assq key (cdr lang-slot)))))) 542 (cdr (assq key (cdr lang-slot))))))
155 543
156 (defun set-language-info (language-name key info) 544 (defun set-language-info (lang-env key info)
157 "Set for LANGUAGE-NAME the information INFO under KEY. 545 "Modify part of the definition of language environment LANG-ENV.
546 Specifically, this stores the information INFO under KEY
547 in the definition of this language environment.
158 KEY is a symbol denoting the kind of information. 548 KEY is a symbol denoting the kind of information.
159 INFO is any Lisp object which contains the actual information. 549 INFO is the value for that information.
160 550
161 Currently, the following KEYs are used by Emacs: 551 For a list of useful values for KEY and their meanings,
162 552 see `language-info-alist'."
163 charset: list of symbols whose values are charsets specific to the language. 553 (if (symbolp lang-env)
164 554 (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) 555 (let (lang-slot key-slot)
190 (setq lang-slot (assoc language-name language-info-alist)) 556 (setq lang-slot (assoc lang-env language-info-alist))
191 (if (null lang-slot) ; If no slot for the language, add it. 557 (if (null lang-slot) ; If no slot for the language, add it.
192 (setq lang-slot (list language-name) 558 (setq lang-slot (list lang-env)
193 language-info-alist (cons lang-slot language-info-alist))) 559 language-info-alist (cons lang-slot language-info-alist)))
194 (setq key-slot (assq key lang-slot)) 560 (setq key-slot (assq key lang-slot))
195 (if (null key-slot) ; If no slot for the key, add it. 561 (if (null key-slot) ; If no slot for the key, add it.
196 (progn 562 (progn
197 (setq key-slot (list key)) 563 (setq key-slot (list key))
198 (setcdr lang-slot (cons key-slot (cdr lang-slot))))) 564 (setcdr lang-slot (cons key-slot (cdr lang-slot)))))
199 ;; Setup menu. 565 (setcdr key-slot info)))
200 (cond ((eq key 'documentation) 566
201 ;; (define-key-after 567 (defun set-language-info-alist (lang-env alist &optional parents)
202 ;; (if (consp info) 568 "Store ALIST as the definition of language environment LANG-ENV.
203 ;; (prog1 (symbol-value (cdr info)) 569 ALIST is an alist of KEY and INFO values. See the documentation of
204 ;; (setq info (car info))) 570 `set-language-info' for the meanings of KEY and INFO."
205 ;; describe-language-environment-map) 571 (if (symbolp lang-env)
206 ;; (vector (intern language-name)) 572 (setq lang-env (symbol-name lang-env)))
207 ;; (cons language-name 'describe-specified-language-support) 573 (let (; (describe-map describe-language-environment-map)
208 ;; t) 574 ; (setup-map setup-language-environment-map)
209 (if (consp info) 575 )
210 (setq info (car info))) 576 ;; (if parents
211 (when (featurep 'menubar) 577 ;; (let ((l parents)
212 (eval-after-load 578 ;; map parent-symbol parent)
579 ;; (while l
580 ;; (if (symbolp (setq parent-symbol (car l)))
581 ;; (setq parent (symbol-name parent))
582 ;; (setq parent parent-symbol parent-symbol (intern parent)))
583 ;; (setq map (lookup-key describe-map (vector parent-symbol)))
584 ;; (if (not map)
585 ;; (progn
586 ;; (setq map (intern (format "describe-%s-environment-map"
587 ;; (downcase parent))))
588 ;; (define-prefix-command map)
589 ;; (define-key-after describe-map (vector parent-symbol)
590 ;; (cons parent map) t)))
591 ;; (setq describe-map (symbol-value map))
592 ;; (setq map (lookup-key setup-map (vector parent-symbol)))
593 ;; (if (not map)
594 ;; (progn
595 ;; (setq map (intern (format "setup-%s-environment-map"
596 ;; (downcase parent))))
597 ;; (define-prefix-command map)
598 ;; (define-key-after setup-map (vector parent-symbol)
599 ;; (cons parent map) t)))
600 ;; (setq setup-map (symbol-value map))
601 ;; (setq l (cdr l)))))
602
603 ;; Set up menu items for this language env.
604 (let ((doc (assq 'documentation alist)))
605 (when doc
606 ;; (define-key-after describe-map (vector (intern lang-env))
607 ;; (cons lang-env 'describe-specified-language-support) t)
608 (when (featurep 'menubar)
609 (eval-after-load
213 "menubar-items.elc" 610 "menubar-items.elc"
214 `(add-menu-button 611 `(add-menu-button
215 '("Mule" "Describe Language Support") 612 '("Mule" "Describe Language Support")
216 (vector ,language-name 613 (vector ,lang-env
217 '(describe-language-environment ,language-name) 614 '(describe-language-environment ,lang-env)
218 t)))) 615 t))))
219 ) 616 ))
220 ((eq key 'setup-function) 617 ;; (define-key-after setup-map (vector (intern lang-env))
221 ;; (define-key-after 618 ;; (cons lang-env 'setup-specified-language-environment) t)
222 ;; (if (consp info) 619 (when (featurep 'menubar)
223 ;; (prog1 (symbol-value (cdr info)) 620 (eval-after-load
224 ;; (setq info (car info))) 621 "menubar-items.elc"
225 ;; setup-language-environment-map) 622 `(add-menu-button
226 ;; (vector (intern language-name)) 623 '("Mule" "Set Language Environment")
227 ;; (cons language-name 'setup-specified-language-environment) 624 (vector ,lang-env
228 ;; t) 625 '(set-language-environment ,lang-env)
229 (if (consp info) 626 t))))
230 (setq info (car info))) 627
231 (when (featurep 'menubar) 628 (while alist
232 (eval-after-load 629 (set-language-info lang-env (car (car alist)) (cdr (car alist)))
233 "menubar-items.elc" 630 (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))))
253 631
254 (defun read-language-name (key prompt &optional default) 632 (defun read-language-name (key prompt &optional default)
255 "Read language name which has information for KEY, prompting with PROMPT. 633 "Read a language environment name which has information for KEY.
256 DEFAULT is the default choice of language. 634 If KEY is nil, read any language environment.
257 This returns a language name as a string." 635 Prompt with PROMPT. DEFAULT is the default choice of language environment.
636 This returns a language environment name as a string."
258 (let* ((completion-ignore-case t) 637 (let* ((completion-ignore-case t)
259 (name (completing-read prompt 638 (name (completing-read prompt
260 language-info-alist 639 language-info-alist
261 (function (lambda (elm) (assq key elm))) 640 (and key
262 t nil default))) 641 (function (lambda (elm) (assq key elm))))
642 t nil nil default)))
263 (if (and (> (length name) 0) 643 (if (and (> (length name) 0)
264 (get-language-info name key)) 644 (or (not key)
645 (get-language-info name key)))
265 name))) 646 name)))
266 647
267 ;;; Multilingual input methods. 648 ;;; Multilingual input methods.
268 649
269 (defconst leim-list-file-name "leim-list.el" 650 (defconst leim-list-file-name "leim-list.el"
274 655
275 (defvar leim-list-header (format 656 (defvar leim-list-header (format
276 ";;; %s -- list of LEIM (Library of Emacs Input Method) 657 ";;; %s -- list of LEIM (Library of Emacs Input Method)
277 ;; 658 ;;
278 ;; This file contains a list of LEIM (Library of Emacs Input Method) 659 ;; This file contains a list of LEIM (Library of Emacs Input Method)
279 ;; in the same directory as this file. Loading this file registeres 660 ;; in the same directory as this file. Loading this file registers
280 ;; the whole input methods in Emacs. 661 ;; the whole input methods in Emacs.
281 ;; 662 ;;
282 ;; Each entry has the form: 663 ;; Each entry has the form:
283 ;; (register-input-method 664 ;; (register-input-method
284 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC 665 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC
319 "Title string of the current input method shown in mode line.") 700 "Title string of the current input method shown in mode line.")
320 (make-variable-buffer-local 'current-input-method-title) 701 (make-variable-buffer-local 'current-input-method-title)
321 (put 'current-input-method-title 'permanent-local t) 702 (put 'current-input-method-title 'permanent-local t)
322 703
323 (defcustom default-input-method nil 704 (defcustom default-input-method nil
324 "*Default input method for multilingual text. 705 "*Default input method for multilingual text (a string).
325 This is the input method activated automatically by the command 706 This is the input method activated automatically by the command
326 `toggle-input-method' (\\[toggle-input-method])." 707 `toggle-input-method' (\\[toggle-input-method])."
327 :group 'mule) 708 :group 'mule
709 :type '(choice (const nil) string))
710
711 (put 'input-method-function 'permanent-local t)
328 712
329 (defvar input-method-history nil 713 (defvar input-method-history nil
330 "History list for some commands that read input methods.") 714 "History list for some commands that read input methods.")
331 (make-variable-buffer-local 'input-method-history) 715 (make-variable-buffer-local 'input-method-history)
332 (put 'input-method-history 'permanent-local t) 716 (put 'input-method-history 'permanent-local t)
346 This function is called with no argument.") 730 This function is called with no argument.")
347 (make-variable-buffer-local 'describe-current-input-method-function) 731 (make-variable-buffer-local 'describe-current-input-method-function)
348 (put 'describe-current-input-method-function 'permanent-local t) 732 (put 'describe-current-input-method-function 'permanent-local t)
349 733
350 (defvar input-method-alist nil 734 (defvar input-method-alist nil
351 "Alist of input method names vs the corresponding information to use it. 735 "Alist of input method names vs how to use them.
352 Each element has the form: 736 Each element has the form:
353 (INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC TITLE DESCRIPTION ...) 737 (INPUT-METHOD LANGUAGE-ENV ACTIVATE-FUNC TITLE DESCRIPTION ARGS...)
354 See the function `register-input-method' for the meanings of each elements.") 738 See the function `register-input-method' for the meanings of the elements.")
355 739
356 (defun register-input-method (input-method language-name &rest args) 740 (defun register-input-method (input-method lang-env &rest args)
357 "Register INPUT-METHOD as an input method for LANGUAGE-NAME. 741 "Register INPUT-METHOD as an input method for language environment ENV.
358 INPUT-METHOD and LANGUAGE-NAME are symbols or strings. 742 INPUT-METHOD and LANG-ENV are symbols or strings.
743
359 The remaining arguments are: 744 The remaining arguments are:
360 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARG ... 745 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARGS...
361 where, 746 ACTIVATE-FUNC is a function to call to activate this method.
362 ACTIVATE-FUNC is a function to call for activating this method. 747 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, 748 DESCRIPTION is a string describing this method and what it is good for.
364 DESCRIPTION is a string describing about this method, 749 The ARGS, if any, are passed as arguments to ACTIVATE-FUNC.
365 Arguments to ACTIVATE-FUNC are INPUT-METHOD and ARGs." 750 All told, the arguments to ACTIVATE-FUNC are INPUT-METHOD and the ARGS.
366 (if (symbolp language-name) 751
367 (setq language-name (symbol-name language-name))) 752 This function is mainly used in the file \"leim-list.el\" which is
753 created at building time of emacs, registering all quail input methods
754 contained in the emacs distribution.
755
756 In case you want to register a new quail input method by yourself, be
757 careful to use the same input method title as given in the third
758 parameter of `quail-define-package' (if the values are different, the
759 string specified in this function takes precedence).
760
761 The commands `describe-input-method' and `list-input-methods' need
762 this duplicated values to show some information about input methods
763 without loading the affected quail packages."
764 (if (symbolp lang-env)
765 (setq lang-env (symbol-name lang-env)))
368 (if (symbolp input-method) 766 (if (symbolp input-method)
369 (setq input-method (symbol-name input-method))) 767 (setq input-method (symbol-name input-method)))
370 (let ((info (cons language-name args)) 768 (let ((info (cons lang-env args))
371 (slot (assoc input-method input-method-alist))) 769 (slot (assoc input-method input-method-alist)))
372 (if slot 770 (if slot
373 (setcdr slot info) 771 (setcdr slot info)
374 (setq slot (cons input-method info)) 772 (setq slot (cons input-method info))
375 (setq input-method-alist (cons slot input-method-alist))))) 773 (setq input-method-alist (cons slot input-method-alist)))))
385 (setq prompt (format prompt default))) 783 (setq prompt (format prompt default)))
386 (let* ((completion-ignore-case t) 784 (let* ((completion-ignore-case t)
387 ;; This binding is necessary because input-method-history is 785 ;; This binding is necessary because input-method-history is
388 ;; buffer local. 786 ;; buffer local.
389 (input-method (completing-read prompt input-method-alist 787 (input-method (completing-read prompt input-method-alist
390 nil t nil 'input-method-history) 788 nil t nil 'input-method-history
391 ;;default) 789 default)))
392 ))
393 (if (string-equal input-method "")
394 (setq input-method default))
395 (if (> (length input-method) 0) 790 (if (> (length input-method) 0)
396 input-method 791 input-method
397 (if inhibit-null 792 (if inhibit-null
398 (error "No valid input method is specified"))))) 793 (error "No valid input method is specified")))))
399 794
400 (defun activate-input-method (input-method) 795 (defun activate-input-method (input-method)
401 "Turn INPUT-METHOD on. 796 "Switch to input method INPUT-METHOD for the current buffer.
402 If some input method is already on, turn it off at first." 797 If some other input method is already active, turn it off first.
403 (if (symbolp input-method) 798 If INPUT-METHOD is nil, deactivate any current input method."
799 (if (and input-method (symbolp input-method))
404 (setq input-method (symbol-name input-method))) 800 (setq input-method (symbol-name input-method)))
405 (if (and current-input-method 801 (if (and current-input-method
406 (not (string= current-input-method input-method))) 802 (not (string= current-input-method input-method)))
407 (inactivate-input-method)) 803 (inactivate-input-method))
408 (unless current-input-method 804 (unless (or current-input-method (null input-method))
409 (let ((slot (assoc input-method input-method-alist))) 805 (let ((slot (assoc input-method input-method-alist)))
410 (if (null slot) 806 (if (null slot)
411 (error "Can't activate input method `%s'" input-method)) 807 (error "Can't activate input method `%s'" input-method))
412 (apply (nth 2 slot) input-method (nthcdr 5 slot)) 808 (let ((func (nth 2 slot)))
809 (if (functionp func)
810 (apply (nth 2 slot) input-method (nthcdr 5 slot))
811 (if (and (consp func) (symbolp (car func)) (symbolp (cdr func)))
812 (progn
813 (require (cdr func))
814 (apply (car func) input-method (nthcdr 5 slot)))
815 (error "Can't activate input method `%s'" input-method))))
413 (setq current-input-method input-method) 816 (setq current-input-method input-method)
414 (setq current-input-method-title (nth 3 slot)) 817 (setq current-input-method-title (nth 3 slot))
415 (run-hooks 'input-method-activate-hook)))) 818 (unwind-protect
819 (run-hooks 'input-method-activate-hook)
820 (force-mode-line-update)))))
416 821
417 (defun inactivate-input-method () 822 (defun inactivate-input-method ()
418 "Turn off the current input method." 823 "Turn off the current input method."
419 (when current-input-method 824 (when current-input-method
420 (if input-method-history 825 (if input-method-history
426 (unwind-protect 831 (unwind-protect
427 (funcall inactivate-current-input-method-function) 832 (funcall inactivate-current-input-method-function)
428 (unwind-protect 833 (unwind-protect
429 (run-hooks 'input-method-inactivate-hook) 834 (run-hooks 'input-method-inactivate-hook)
430 (setq current-input-method nil 835 (setq current-input-method nil
431 current-input-method-title nil))))) 836 current-input-method-title nil)
432 837 (force-mode-line-update)))))
433 (defun select-input-method (input-method) 838
434 "Select and turn on INPUT-METHOD. 839 (defun set-input-method (input-method)
435 This sets the default input method to what you specify, 840 "Select and activate input method INPUT-METHOD for the current buffer.
436 and turn it on for the current buffer." 841 This also sets the default input method to the one you specify."
437 (interactive 842 (interactive
438 (let* ((default (or (car input-method-history) default-input-method))) 843 (let* ((default (or (car input-method-history) default-input-method)))
439 (list (read-input-method-name 844 (list (read-input-method-name
440 (if default "Select input method (default %s): " "Select input method: ") 845 (if default "Select input method (default %s): " "Select input method: ")
441 default t)))) 846 default t))))
443 (setq default-input-method input-method)) 848 (setq default-input-method input-method))
444 849
445 (defun toggle-input-method (&optional arg) 850 (defun toggle-input-method (&optional arg)
446 "Turn on or off a multilingual text input method for the current buffer. 851 "Turn on or off a multilingual text input method for the current buffer.
447 852
448 With arg, read an input method from minibuffer and turn it on. 853 With no prefix argument, if an input method is currently activated,
449 854 turn it off. Otherwise, activate an input method -- the one most
450 Without arg, if some input method is currently activated, turn it off, 855 recently used, or the one specified in `default-input-method', or
451 else turn on an input method selected last time 856 the one read from the minibuffer.
452 or the default input method (see `default-input-method'). 857
453 858 With a prefix argument, read an input method from the minibuffer and
454 When there's no input method to turn on, turn on what read from minibuffer." 859 turn it on.
860
861 The default is to use the most recent input method specified
862 \(not including the currently active input method, if any)."
455 (interactive "P") 863 (interactive "P")
456 (let* ((default (or (car input-method-history) default-input-method))) 864 (if (and current-input-method (not arg))
457 (if (and current-input-method (not arg)) 865 (inactivate-input-method)
458 (inactivate-input-method) 866 (let ((default (or (car input-method-history) default-input-method)))
867 (if (and arg default (equal current-input-method default)
868 (> (length input-method-history) 1))
869 (setq default (nth 1 input-method-history)))
459 (activate-input-method 870 (activate-input-method
460 (if (or arg (not default)) 871 (if (or arg (not default))
461 (read-input-method-name 872 (progn
462 (if default "Input method (default %s): " "Input method: " ) 873 (read-input-method-name
463 default t) 874 (if default "Input method (default %s): " "Input method: " )
875 default t))
464 default)) 876 default))
465 (or default-input-method 877 (or default-input-method
466 (setq default-input-method current-input-method))))) 878 (setq default-input-method current-input-method)))))
467 879
468 (defun describe-input-method (input-method) 880 (defun describe-input-method (input-method)
469 "Describe input method INPUT-METHOD." 881 "Describe input method INPUT-METHOD."
470 (interactive 882 (interactive
471 (list (read-input-method-name 883 (list (read-input-method-name
472 "Describe input method (default, current choice): "))) 884 "Describe input method (default, current choice): ")))
473 (if (and input-method (symbolp input-method)) 885 (if (and input-method (symbolp input-method))
474 (setq input-method (symbol-name input-method))) 886 (setq input-method (symbol-name input-method)))
484 (if current-input-method 896 (if current-input-method
485 (if (and (symbolp describe-current-input-method-function) 897 (if (and (symbolp describe-current-input-method-function)
486 (fboundp describe-current-input-method-function)) 898 (fboundp describe-current-input-method-function))
487 (funcall describe-current-input-method-function) 899 (funcall describe-current-input-method-function)
488 (message "No way to describe the current input method `%s'" 900 (message "No way to describe the current input method `%s'"
489 (cdr current-input-method)) 901 current-input-method)
490 (ding)) 902 (ding))
491 (error "No input method is activated now"))) 903 (error "No input method is activated now")))
492 904
493 (defun read-multilingual-string (prompt &optional initial-input 905 (defun read-multilingual-string (prompt &optional initial-input input-method)
494 input-method)
495 "Read a multilingual string from minibuffer, prompting with string PROMPT. 906 "Read a multilingual string from minibuffer, prompting with string PROMPT.
496 The input method selected last time is activated in minibuffer. 907 The input method selected last time is activated in minibuffer.
497 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer 908 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer
498 initially. 909 initially.
499 Optional 3rd argument INPUT-METHOD specifies the input method 910 Optional 3rd argument INPUT-METHOD specifies the input method
500 to be activated instead of the one selected last time. It is a symbol 911 to be activated instead of the one selected last time. It is a symbol
501 or a string." 912 or a string."
502 (setq input-method 913 (setq input-method
503 (or input-method 914 (or input-method
915 current-input-method
504 default-input-method 916 default-input-method
505 (read-input-method-name "Input method: " nil t))) 917 (read-input-method-name "Input method: " nil t)))
506 (if (and input-method (symbolp input-method)) 918 (if (and input-method (symbolp input-method))
507 (setq input-method (symbol-name input-method))) 919 (setq input-method (symbol-name input-method)))
508 (let ((current-input-method input-method)) 920 (let ((prev-input-method current-input-method))
509 ;; FSFmacs 921 (unwind-protect
510 ;; (read-string prompt initial-input nil nil t))) 922 (progn
511 (read-string prompt initial-input nil))) 923 (activate-input-method input-method)
924 ;; FSF Emacs
925 ;; (read-string prompt initial-input nil nil t)
926 (read-string prompt initial-input nil))
927 (activate-input-method prev-input-method))))
512 928
513 ;; Variables to control behavior of input methods. All input methods 929 ;; Variables to control behavior of input methods. All input methods
514 ;; should react to these variables. 930 ;; should react to these variables.
515 931
516 (defcustom input-method-verbose-flag t 932 (defcustom input-method-verbose-flag 'default
517 "*If this flag is non-nil, input methods give extra guidance. 933 "*A flag to control extra guidance given by input methods.
934 The value should be nil, t, `complex-only', or `default'.
518 935
519 The extra guidance is done by showing list of available keys in echo 936 The extra guidance is done by showing list of available keys in echo
520 area. 937 area. When you use the input method in the minibuffer, the guidance
521 938 is shown at the bottom short window (split from the existing window).
522 For complex input methods such as `chinese-py' and `japanese', 939
523 when you use the input method in the minibuffer, the guidance is 940 If the value is t, extra guidance is always given, if the value is
524 shown at the bottom short window (split from the existing window). 941 nil, extra guidance is always suppressed.
525 For simple input methods, guidance is not shown 942
526 when you are in the minibuffer." 943 If the value is `complex-only', only complex input methods such as
527 :type 'boolean 944 `chinese-py' and `japanese' give extra guidance.
945
946 If the value is `default', complex input methods always give extra
947 guidance, but simple input methods give it only when you are not in
948 the minibuffer.
949
950 See also the variable `input-method-highlight-flag'."
951 :type '(choice (const t) (const nil) (const complex-only) (const default))
528 :group 'mule) 952 :group 'mule)
529 953
530 (defcustom input-method-highlight-flag t 954 (defcustom input-method-highlight-flag t
531 "*If this flag is non-nil, input methods highlight partially-entered text. 955 "*If this flag is non-nil, input methods highlight partially-entered text.
532 For instance, while you are in the middle of a Quail input method sequence, 956 For instance, while you are in the middle of a Quail input method sequence,
533 the text inserted so far is temporarily underlined. 957 the text inserted so far is temporarily underlined.
534 The underlining goes away when you finish or abort the input method sequence." 958 The underlining goes away when you finish or abort the input method sequence.
959 See also the variable `input-method-verbose-flag'."
535 :type 'boolean 960 :type 'boolean
536 :group 'mule) 961 :group 'mule)
537 962
538 (defvar input-method-activate-hook nil 963 (defvar input-method-activate-hook nil
539 "Normal hook run just after an input method is activated. 964 "Normal hook run just after an input method is activated.
543 968
544 (defvar input-method-inactivate-hook nil 969 (defvar input-method-inactivate-hook nil
545 "Normal hook run just after an input method is inactivated. 970 "Normal hook run just after an input method is inactivated.
546 971
547 The variable `current-input-method' still keeps the input method name 972 The variable `current-input-method' still keeps the input method name
548 just inacitvated.") 973 just inactivated.")
549 974
550 (defvar input-method-after-insert-chunk-hook nil 975 (defvar input-method-after-insert-chunk-hook nil
551 "Normal hook run just after an input method insert some chunk of text.") 976 "Normal hook run just after an input method insert some chunk of text.")
977
978 (defvar input-method-exit-on-first-char nil
979 "This flag controls a timing when an input method returns.
980 Usually, the input method does not return while there's a possibility
981 that it may find a different translation if a user types another key.
982 But, it this flag is non-nil, the input method returns as soon as
983 the current key sequence gets long enough to have some valid translation.")
984
985 (defvar input-method-use-echo-area nil
986 "This flag controls how an input method shows an intermediate key sequence.
987 Usually, the input method inserts the intermediate key sequence,
988 or candidate translations corresponding to the sequence,
989 at point in the current buffer.
990 But, if this flag is non-nil, it displays them in echo area instead.")
552 991
553 (defvar input-method-exit-on-invalid-key nil 992 (defvar input-method-exit-on-invalid-key nil
554 "This flag controls the behaviour of an input method on invalid key input. 993 "This flag controls the behaviour of an input method on invalid key input.
555 Usually, when a user types a key which doesn't start any character 994 Usually, when a user types a key which doesn't start any character
556 handled by the input method, the key is handled by turning off the 995 handled by the input method, the key is handled by turning off the
557 input method temporalily. After the key is handled, the input method is 996 input method temporarily. After that key, the input method is re-enabled.
558 back on.
559 But, if this flag is non-nil, the input method is never back on.") 997 But, if this flag is non-nil, the input method is never back on.")
560 998
561 999
1000 (defvar set-language-environment-hook nil
1001 "Normal hook run after some language environment is set.
1002
1003 When you set some hook function here, that effect usually should not
1004 be inherited to another language environment. So, you had better set
1005 another function in `exit-language-environment-hook' (which see) to
1006 cancel the effect.")
1007
1008 (defvar exit-language-environment-hook nil
1009 "Normal hook run after exiting from some language environment.
1010 When this hook is run, the variable `current-language-environment'
1011 is still bound to the language environment being exited.
1012
1013 This hook is mainly used for canceling the effect of
1014 `set-language-environment-hook' (which-see).")
1015
1016 (put 'setup-specified-language-environment 'apropos-inhibit t)
1017
562 (defun setup-specified-language-environment () 1018 (defun setup-specified-language-environment ()
563 "Set up multi-lingual environment convenient for the specified language." 1019 "Switch to a specified language environment."
564 (interactive) 1020 (interactive)
565 (let (language-name) 1021 (let (language-name)
566 (if (and (symbolp last-command-event) 1022 (if (and (symbolp last-command-event)
567 (or (not (eq last-command-event 'Default)) 1023 (or (not (eq last-command-event 'Default))
568 (setq last-command-event 'English)) 1024 (setq last-command-event 'English))
569 (setq language-name (symbol-name last-command-event))) 1025 (setq language-name (symbol-name last-command-event)))
570 (set-language-environment language-name) 1026 (set-language-environment language-name)
571 (error "Bogus calling sequence")))) 1027 (error "Bogus calling sequence"))))
572 1028
573 (defvar current-language-environment "English" 1029 (defcustom current-language-environment "English"
574 "The last language environment specified with `set-language-environment'.") 1030 "The last language environment specified with `set-language-environment'.
1031 This variable should be set only with \\[customize], which is equivalent
1032 to using the function `set-language-environment'."
1033 :link '(custom-manual "(emacs)Language Environments")
1034 :set (lambda (symbol value) (set-language-environment value))
1035 :get (lambda (x)
1036 (or (car-safe (assoc-ignore-case
1037 (if (symbolp current-language-environment)
1038 (symbol-name current-language-environment)
1039 current-language-environment)
1040 language-info-alist))
1041 "English"))
1042 :type (cons 'choice (mapcar (lambda (lang)
1043 (list 'const (car lang)))
1044 language-info-alist))
1045 :initialize 'custom-initialize-default
1046 :group 'mule
1047 :type 'string)
1048
1049 (defun reset-language-environment ()
1050 "Reset multilingual environment of Emacs to the default status.
1051
1052 The default status is as follows:
1053
1054 The default value of buffer-file-coding-system is nil.
1055 The default coding system for process I/O is nil.
1056 The default value for the command `set-terminal-coding-system' is nil.
1057 The default value for the command `set-keyboard-coding-system' is nil.
1058
1059 The order of priorities of coding categories and the coding system
1060 bound to each category are as follows
1061 coding category coding system
1062 --------------------------------------------------
1063 iso-8-2 iso-8859-1
1064 iso-8-1 iso-8859-1
1065 iso-7 iso-2022-7bit
1066 iso-lock-shift iso-2022-lock
1067 iso-8-designate iso-2022-8bit-ss2
1068 no-conversion raw-text
1069 shift-jis shift_jis
1070 big5 big5
1071 ucs-4 ----
1072 utf-8 ----
1073 "
1074 (interactive)
1075 ;; This function formerly set default-enable-multibyte-characters to t,
1076 ;; but that is incorrect. It should not alter the unibyte/multibyte choice.
1077
1078 (set-coding-category-system 'iso-7 'iso-2022-7bit)
1079 (set-coding-category-system 'iso-8-1 'iso-8859-1)
1080 (set-coding-category-system 'iso-8-2 'iso-8859-1)
1081 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
1082 (set-coding-category-system 'iso-8-designate 'iso-2022-8bit-ss2)
1083 (set-coding-category-system 'no-conversion 'raw-text)
1084 (set-coding-category-system 'shift-jis 'shift_jis)
1085 (set-coding-category-system 'big5 'big5)
1086 (cond ((eq (coding-system-type (coding-category-system 'utf-8)) 'utf-8)
1087 (set-coding-category-system 'ucs-4 'iso-10646-ucs-4)
1088 (set-coding-category-system 'utf-8 'utf-8)
1089 (set-coding-priority-list
1090 '(iso-8-1
1091 iso-8-2
1092 iso-7
1093 iso-lock-shift
1094 iso-8-designate
1095 utf-8
1096 ucs-4
1097 no-conversion
1098 shift-jis
1099 big5))
1100 )
1101 (t
1102 (set-coding-priority-list
1103 '(iso-8-1
1104 iso-8-2
1105 iso-7
1106 iso-lock-shift
1107 iso-8-designate
1108 no-conversion
1109 shift-jis
1110 big5))
1111 ))
1112
1113 ;; (update-coding-systems-internal)
1114
1115 (set-default-coding-systems nil)
1116 ;; Don't alter the terminal and keyboard coding systems here.
1117 ;; The terminal still supports the same coding system
1118 ;; that it supported a minute ago.
1119 ;;; (set-terminal-coding-system-internal nil)
1120 ;;; (set-keyboard-coding-system-internal nil)
1121
1122 ;; (setq nonascii-translation-table nil
1123 ;; nonascii-insert-offset 0)
1124 )
575 1125
576 (defun set-language-environment (language-name) 1126 (defun set-language-environment (language-name)
577 "Set up multi-lingual environment for using LANGUAGE-NAME. 1127 "Set up multi-lingual environment for using LANGUAGE-NAME.
578 This sets the coding system priority and the default input method 1128 This sets the coding system priority and the default input method
579 and sometimes other things." 1129 and sometimes other things. LANGUAGE-NAME should be a string
580 (interactive (list (read-language-name 'setup-function 1130 which is the name of a language environment. For example, \"Latin-1\"
581 "Set language environment: "))) 1131 specifies the character set for the major languages of Western Europe."
1132 (interactive (list (read-language-name
1133 nil
1134 "Set language environment (default, English): ")))
582 (if language-name 1135 (if language-name
583 (if (symbolp language-name) 1136 (if (symbolp language-name)
584 (setq language-name (symbol-name language-name))) 1137 (setq language-name (symbol-name language-name)))
585 (setq language-name "English")) 1138 (setq language-name "English"))
586 (if (null (get-language-info language-name 'setup-function)) 1139 (or (assoc-ignore-case language-name language-info-alist)
587 (error "Language environment not defined: %S" language-name)) 1140 (error "Language environment not defined: %S" language-name))
588 (funcall (get-language-info language-name 'setup-function)) 1141 (if current-language-environment
589 (setq current-language-environment language-name) 1142 (let ((func (get-language-info current-language-environment
1143 'exit-function)))
1144 (run-hooks 'exit-language-environment-hook)
1145 (if (fboundp func) (funcall func))))
1146 (let ((default-eol-type (coding-system-eol-type
1147 default-buffer-file-coding-system)))
1148 (reset-language-environment)
1149
1150 (setq current-language-environment language-name)
1151 (set-language-environment-coding-systems language-name default-eol-type))
1152 (let ((input-method (get-language-info language-name 'input-method)))
1153 (when input-method
1154 (setq default-input-method input-method)
1155 (if input-method-history
1156 (setq input-method-history
1157 (cons input-method
1158 (delete input-method input-method-history))))))
1159 ;; (let ((nonascii (get-language-info language-name 'nonascii-translation))
1160 ;; (dos-table
1161 ;; (if (eq window-system 'pc)
1162 ;; (intern
1163 ;; (concat "cp" dos-codepage "-nonascii-translation-table")))))
1164 ;; (cond
1165 ;; ((char-table-p nonascii)
1166 ;; (setq nonascii-translation-table nonascii))
1167 ;; ((and (eq window-system 'pc) (boundp dos-table))
1168 ;; ;; DOS terminals' default is to use a special non-ASCII translation
1169 ;; ;; table as appropriate for the installed codepage.
1170 ;; (setq nonascii-translation-table (symbol-value dos-table)))
1171 ;; ((charsetp nonascii)
1172 ;; (setq nonascii-insert-offset (- (make-char nonascii) 128)))))
1173
1174 ;; (setq charset-origin-alist
1175 ;; (get-language-info language-name 'charset-origin-alist))
1176
1177 ;; Unibyte setups if necessary.
1178 ;; (unless default-enable-multibyte-characters
1179 ;; ;; Syntax and case table.
1180 ;; (let ((syntax (get-language-info language-name 'unibyte-syntax)))
1181 ;; (if syntax
1182 ;; (let ((set-case-syntax-set-multibyte nil))
1183 ;; (load syntax nil t))
1184 ;; ;; No information for syntax and case. Reset to the defaults.
1185 ;; (let ((syntax-table (standard-syntax-table))
1186 ;; (case-table (standard-case-table))
1187 ;; (ch (if (eq window-system 'pc) 128 160)))
1188 ;; (while (< ch 256)
1189 ;; (modify-syntax-entry ch " " syntax-table)
1190 ;; (aset case-table ch ch)
1191 ;; (setq ch (1+ ch)))
1192 ;; (set-char-table-extra-slot case-table 0 nil)
1193 ;; (set-char-table-extra-slot case-table 1 nil)
1194 ;; (set-char-table-extra-slot case-table 2 nil))
1195 ;; (set-standard-case-table (standard-case-table))
1196 ;; (let ((list (buffer-list)))
1197 ;; (while list
1198 ;; (with-current-buffer (car list)
1199 ;; (set-case-table (standard-case-table)))
1200 ;; (setq list (cdr list))))))
1201 ;; ;; Display table and coding system for terminal.
1202 ;; (let ((coding (get-language-info language-name 'unibyte-display)))
1203 ;; (if coding
1204 ;; (standard-display-european-internal)
1205 ;; (standard-display-default (if (eq window-system 'pc) 128 160) 255)
1206 ;; (aset standard-display-table 146 nil))
1207 ;; (or (eq window-system 'pc)
1208 ;; (set-terminal-coding-system coding))))
1209
1210 (let ((required-features (get-language-info language-name 'features)))
1211 (while required-features
1212 (require (car required-features))
1213 (setq required-features (cdr required-features))))
1214 (let ((func (get-language-info language-name 'setup-function)))
1215 (if (fboundp func)
1216 (funcall func)))
1217 (run-hooks 'set-language-environment-hook)
590 (force-mode-line-update t)) 1218 (force-mode-line-update t))
1219
1220 ;; (defun standard-display-european-internal ()
1221 ;; ;; Actually set up direct output of non-ASCII characters.
1222 ;; (standard-display-8bit (if (eq window-system 'pc) 128 160) 255)
1223 ;; ;; Unibyte Emacs on MS-DOS wants to display all 8-bit characters with
1224 ;; ;; the native font, and codes 160 and 146 stand for something very
1225 ;; ;; different there.
1226 ;; (or (and (eq window-system 'pc) (not default-enable-multibyte-characters))
1227 ;; (progn
1228 ;; ;; Make non-line-break space display as a plain space.
1229 ;; ;; Most X fonts do the wrong thing for code 160.
1230 ;; (aset standard-display-table 160 [32])
1231 ;; ;; Most Windows programs send out apostrophe's as \222. Most X fonts
1232 ;; ;; don't contain a character at that position. Map it to the ASCII
1233 ;; ;; apostrophe.
1234 ;; (aset standard-display-table 146 [39]))))
1235
1236 (defun set-language-environment-coding-systems (language-name
1237 &optional eol-type)
1238 "Do various coding system setups for language environment LANGUAGE-NAME.
1239
1240 The optional arg EOL-TYPE specifies the eol-type of the default value
1241 of buffer-file-coding-system set by this function."
1242 (let* ((priority (get-language-info language-name 'coding-priority))
1243 (default-coding (car priority)))
1244 (if priority
1245 (let ((categories (mapcar 'coding-system-category priority))
1246 category checked-categories)
1247 (set-default-coding-systems
1248 (if (memq eol-type '(lf crlf cr unix dos mac))
1249 (coding-system-change-eol-conversion default-coding eol-type)
1250 default-coding))
1251 ;; (setq default-sendmail-coding-system default-coding)
1252 (while priority
1253 (unless (memq (setq category (car categories)) checked-categories)
1254 (set-coding-category-system category (car priority))
1255 (setq checked-categories (cons category checked-categories)))
1256 (setq priority (cdr priority)
1257 categories (cdr categories)))
1258 (set-coding-priority-list (nreverse checked-categories))
1259 ;; (update-coding-systems-internal)
1260 ))))
591 1261
592 ;; Print all arguments with `princ', then print "\n". 1262 ;; Print all arguments with `princ', then print "\n".
593 (defsubst princ-list (&rest args) 1263 (defsubst princ-list (&rest args)
594 (while args (princ (car args)) (setq args (cdr args))) 1264 (while args (princ (car args)) (setq args (cdr args)))
595 (princ "\n")) 1265 (princ "\n"))
1266
1267 (put 'describe-specified-language-support 'apropos-inhibit t)
596 1268
597 ;; Print a language specific information such as input methods, 1269 ;; Print a language specific information such as input methods,
598 ;; charsets, and coding systems. This function is intended to be 1270 ;; charsets, and coding systems. This function is intended to be
599 ;; called from the menu: 1271 ;; called from the menu:
600 ;; [menu-bar mule describe-language-environment LANGUAGE] 1272 ;; [menu-bar mule describe-language-environment LANGUAGE]
611 (defun describe-language-environment (language-name) 1283 (defun describe-language-environment (language-name)
612 "Describe how Emacs supports language environment LANGUAGE-NAME." 1284 "Describe how Emacs supports language environment LANGUAGE-NAME."
613 (interactive 1285 (interactive
614 (list (read-language-name 1286 (list (read-language-name
615 'documentation 1287 'documentation
616 "Describe language environment (default, current choise): "))) 1288 "Describe language environment (default, current choice): ")))
617 (if (null language-name) 1289 (if (null language-name)
618 (setq language-name current-language-environment)) 1290 (setq language-name current-language-environment))
619 (if (or (null language-name) 1291 (if (or (null language-name)
620 (null (get-language-info language-name 'documentation))) 1292 (null (get-language-info language-name 'documentation)))
621 (error "No documentation for the specified language")) 1293 (error "No documentation for the specified language"))
622 (if (symbolp language-name) 1294 (if (symbolp language-name)
623 (setq language-name (symbol-name language-name))) 1295 (setq language-name (symbol-name language-name)))
624 (let ((doc (get-language-info language-name 'documentation))) 1296 (let ((doc (get-language-info language-name 'documentation)))
625 (with-output-to-temp-buffer "*Help*" 1297 (with-output-to-temp-buffer "*Help*"
1298 (princ-list language-name " language environment" "\n")
626 (if (stringp doc) 1299 (if (stringp doc)
627 (progn 1300 (progn
628 (princ-list doc) 1301 (princ-list doc)
629 (terpri))) 1302 (terpri)))
630 (let ((str (get-language-info language-name 'sample-text))) 1303 (let ((str (get-language-info language-name 'sample-text)))
631 (if (stringp str) 1304 (if (stringp str)
632 (progn 1305 (progn
633 (princ "Sample text:\n") 1306 (princ "Sample text:\n")
634 (princ-list " " str) 1307 (princ-list " " str)
635 (terpri)))) 1308 (terpri))))
636 (princ "Input methods:\n") 1309 (let ((input-method (get-language-info language-name 'input-method))
637 (let ((l input-method-alist)) 1310 (l (copy-sequence input-method-alist)))
638 (while l 1311 (princ "Input methods")
1312 (when input-method
1313 (princ (format " (default, %s)" input-method))
1314 (setq input-method (assoc input-method input-method-alist))
1315 (setq l (cons input-method (delete input-method l))))
1316 (princ ":\n")
1317 (while l
639 (if (string= language-name (nth 1 (car l))) 1318 (if (string= language-name (nth 1 (car l)))
640 (princ-list " " (car (car l)) 1319 (princ-list " " (car (car l))
641 (format " (`%s' in mode line)" (nth 3 (car l))))) 1320 (format " (`%s' in mode line)" (nth 3 (car l)))))
642 (setq l (cdr l)))) 1321 (setq l (cdr l))))
643 (terpri) 1322 (terpri)
656 (princ-list " nothing specific to " language-name) 1335 (princ-list " nothing specific to " language-name)
657 (while l 1336 (while l
658 (princ ; (format " %s (`%c' in mode line):\n\t%s\n" 1337 (princ ; (format " %s (`%c' in mode line):\n\t%s\n"
659 ;; In XEmacs, `coding-system-mnemonic' returns string. 1338 ;; In XEmacs, `coding-system-mnemonic' returns string.
660 (format " %s (`%s' in mode line):\n\t%s\n" 1339 (format " %s (`%s' in mode line):\n\t%s\n"
661 (car l) 1340 (car l)
662 (coding-system-mnemonic (car l)) 1341 (coding-system-mnemonic (car l))
663 (coding-system-doc-string (car l)))) 1342 (coding-system-doc-string (car l))))
1343 ;; (let ((aliases (coding-system-get (car l) 'alias-coding-systems)))
1344 ;; (when aliases
1345 ;; (princ "\t")
1346 ;; (princ (cons 'alias: (cdr aliases)))
1347 ;; (terpri)))
664 (setq l (cdr l)))))))) 1348 (setq l (cdr l))))))))
665 1349
666 ;;; Charset property 1350 ;;; Charset property
667 1351
668 ;; (defsubst get-charset-property (charset propname) 1352 ;; (defsubst get-charset-property (charset propname)
678 ;; (plist-put (charset-plist charset) propname value))) 1362 ;; (plist-put (charset-plist charset) propname value)))
679 1363
680 (defvar char-code-property-table 1364 (defvar char-code-property-table
681 (make-char-table 'generic) 1365 (make-char-table 'generic)
682 "Char-table containing a property list of each character code. 1366 "Char-table containing a property list of each character code.
683 ;; 1367
684 See also the documentation of `get-char-code-property' and 1368 See also the documentation of `get-char-code-property' and
685 `put-char-code-property'") 1369 `put-char-code-property'")
686 ;; (let ((plist (aref char-code-property-table char))) 1370 ;; (let ((plist (aref char-code-property-table char)))
687 (defun get-char-code-property (char propname) 1371 (defun get-char-code-property (char propname)
688 "Return the value of CHAR's PROPNAME property in `char-code-property-table'." 1372 "Return the value of CHAR's PROPNAME property in `char-code-property-table'."
699 (if slot 1383 (if slot
700 (setcar (cdr slot) value) 1384 (setcar (cdr slot) value)
701 (nconc plist (list propname value)))) 1385 (nconc plist (list propname value))))
702 (put-char-table char (list propname value) char-code-property-table) 1386 (put-char-table char (list propname value) char-code-property-table)
703 ))) 1387 )))
704 ;; (setcar (cdr slot) value) 1388
705 ;; (nconc plist (list propname value)))) 1389
706 ;; (aset char-code-property-table char (list propname value))))) 1390 ;; Pretty description of encoded string
1391
1392 ;; Alist of ISO 2022 control code vs the corresponding mnemonic string.
1393 ;; (defvar iso-2022-control-alist
1394 ;; '((?\x1b . "ESC")
1395 ;; (?\x0e . "SO")
1396 ;; (?\x0f . "SI")
1397 ;; (?\x8e . "SS2")
1398 ;; (?\x8f . "SS3")
1399 ;; (?\x9b . "CSI")))
1400
1401 ;; (defun encoded-string-description (str coding-system)
1402 ;; "Return a pretty description of STR that is encoded by CODING-SYSTEM."
1403 ;; (setq str (string-as-unibyte str))
1404 ;; (let ((char (aref str 0))
1405 ;; desc)
1406 ;; (when (< char 128)
1407 ;; (setq desc (or (cdr (assq char iso-2022-control-alist))
1408 ;; (char-to-string char)))
1409 ;; (let ((i 1)
1410 ;; (len (length str)))
1411 ;; (while (< i len)
1412 ;; (setq char (aref str i))
1413 ;; (if (>= char 128)
1414 ;; (setq desc nil i len)
1415 ;; (setq desc (concat desc " "
1416 ;; (or (cdr (assq char iso-2022-control-alist))
1417 ;; (char-to-string char)))
1418 ;; i (1+ i))))))
1419 ;; (or desc
1420 ;; (mapconcat (function (lambda (x) (format "0x%02x" x))) str " "))))
1421
1422 ;; (defun encode-coding-char (char coding-system)
1423 ;; "Encode CHAR by CODING-SYSTEM and return the resulting string.
1424 ;; If CODING-SYSTEM can't safely encode CHAR, return nil."
1425 ;; (if (cmpcharp char)
1426 ;; (setq char (car (decompose-composite-char char 'list))))
1427 ;; (let ((str1 (char-to-string char))
1428 ;; (str2 (make-string 2 char))
1429 ;; (safe-charsets (and coding-system
1430 ;; (coding-system-get coding-system 'safe-charsets)))
1431 ;; enc1 enc2 i1 i2)
1432 ;; (when (or (eq safe-charsets t)
1433 ;; (memq (char-charset char) safe-charsets))
1434 ;; ;; We must find the encoded string of CHAR. But, just encoding
1435 ;; ;; CHAR will put extra control sequences (usually to designate
1436 ;; ;; ASCII charaset) at the tail if type of CODING is ISO 2022.
1437 ;; ;; To exclude such tailing bytes, we at first encode one-char
1438 ;; ;; string and two-char string, then check how many bytes at the
1439 ;; ;; tail of both encoded strings are the same.
1440 ;;
1441 ;; (setq enc1 (string-as-unibyte (encode-coding-string str1 coding-system))
1442 ;; i1 (length enc1)
1443 ;; enc2 (string-as-unibyte (encode-coding-string str2 coding-system))
1444 ;; i2 (length enc2))
1445 ;; (while (and (> i1 0) (= (aref enc1 (1- i1)) (aref enc2 (1- i2))))
1446 ;; (setq i1 (1- i1) i2 (1- i2)))
1447 ;;
1448 ;; ;; Now (substring enc1 i1) and (substring enc2 i2) are the same,
1449 ;; ;; and they are the extra control sequences at the tail to
1450 ;; ;; exclude.
1451 ;; (substring enc2 0 i2))))
1452
707 1453
708 ;;; mule-cmds.el ends here 1454 ;;; mule-cmds.el ends here