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comparison lisp/mule/mule-cmds.el @ 412:697ef44129c6 r21-2-14

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Import from CVS: tag r21-2-14
author cvs
date Mon, 13 Aug 2007 11:20:41 +0200
parents b8cc9ab3f761
children da8ed4261e83
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411:12e008d41344 412:697ef44129c6
1 ;;; mule-cmds.el --- Commands for multilingual environment 1 ;;; mule-cmds.el --- Commands for multilingual environment
2 2
3 ;; Copyright (C) 1995,1999 Electrotechnical Laboratory, JAPAN. 3 ;; Copyright (C) 1995 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 "x" 'set-selection-coding-system) 41 (define-key mule-keymap "\C-\\" 'select-input-method)
42 (define-key mule-keymap "X" 'set-next-selection-coding-system)
43 (define-key mule-keymap "\C-\\" 'set-input-method)
44 (define-key mule-keymap "c" 'universal-coding-system-argument) 42 (define-key mule-keymap "c" 'universal-coding-system-argument)
45 ;;(define-key mule-keymap "c" 'list-coding-system-briefly) ; XEmacs 43 ;;(define-key mule-keymap "c" 'list-coding-system-briefly) ; XEmacs
46 (define-key mule-keymap "C" 'describe-coding-system) ; XEmacs 44 (define-key mule-keymap "C" 'list-coding-system) ; XEmacs
47 (define-key mule-keymap "r" 'toggle-display-direction) ; XEmacs 45 (define-key mule-keymap "r" 'toggle-display-direction) ; XEmacs
48 (define-key mule-keymap "l" 'set-language-environment) 46 (define-key mule-keymap "l" 'set-language-environment)
49 47
48 (define-key help-map "\C-L" 'describe-language-support)
50 (define-key help-map "L" 'describe-language-environment) 49 (define-key help-map "L" 'describe-language-environment)
51 (define-key help-map "\C-\\" 'describe-input-method) 50 (define-key help-map "\C-\\" 'describe-input-method)
52 (define-key help-map "I" 'describe-input-method) 51 (define-key help-map "I" 'describe-input-method)
52 (define-key help-map "C" 'describe-coding-system)
53 (define-key help-map "h" 'view-hello-file) 53 (define-key help-map "h" 'view-hello-file)
54 54
55 ;; Menu for XEmacs were moved to menubar-items.el. 55 ;; Menu for XEmacs were moved to menubar-items.el.
56 56
57 57
61 ;; convenient because it requires shifting on most keyboards. An 61 ;; convenient because it requires shifting on most keyboards. An
62 ;; alternative is "\C-\]" which is now bound to `abort-recursive-edit' 62 ;; alternative is "\C-\]" which is now bound to `abort-recursive-edit'
63 ;; but it won't be used that frequently. 63 ;; but it won't be used that frequently.
64 (define-key global-map "\C-\\" 'toggle-input-method) 64 (define-key global-map "\C-\\" 'toggle-input-method)
65 65
66 ;;; This is no good because people often type Shift-SPC
67 ;;; meaning to type SPC. -- rms.
68 ;;; ;; Here's an alternative key binding for X users (Shift-SPACE).
69 ;;; (define-key global-map [?\S- ] 'toggle-input-method)
70
71 (defun coding-system-change-eol-conversion (coding-system eol-type)
72 "Return a coding system which differs from CODING-SYSTEM in eol conversion.
73 The returned coding system converts end-of-line by EOL-TYPE
74 but text as the same way as CODING-SYSTEM.
75 EOL-TYPE should be `lf', `crlf', `cr' or nil.
76 If EOL-TYPE is nil, the returned coding system detects
77 how end-of-line is formatted automatically while decoding.
78
79 EOL-TYPE can be specified by an symbol `unix', `dos' or `mac'.
80 They means `lf', `crlf', and `cr' respectively."
81 (if (symbolp eol-type)
82 (setq eol-type (cond ((or (eq eol-type 'unix)
83 (eq eol-type 'lf))
84 'eol-lf)
85 ((or (eq eol-type 'dos)
86 (eq eol-type 'crlf))
87 'eol-crlf)
88 ((or (eq eol-type 'mac)
89 (eq eol-type 'cr))
90 'eol-cr)
91 (t eol-type))))
92 (let ((orig-eol-type (coding-system-eol-type coding-system)))
93 (if (null orig-eol-type)
94 (if (not eol-type)
95 coding-system
96 (coding-system-property coding-system eol-type))
97 (let ((base (coding-system-base coding-system)))
98 (if (not eol-type)
99 base
100 (if (= eol-type orig-eol-type)
101 coding-system
102 (setq orig-eol-type (coding-system-eol-type base))
103 (if (null orig-eol-type)
104 (coding-system-property base eol-type))))))))
105
106 ;; (defun coding-system-change-text-conversion (coding-system coding)
107 ;; "Return a coding system which differs from CODING-SYSTEM in text conversion.
108 ;; The returned coding system converts text by CODING
109 ;; but end-of-line as the same way as CODING-SYSTEM.
110 ;; If CODING is nil, the returned coding system detects
111 ;; how text is formatted automatically while decoding."
112 ;; (if (not coding)
113 ;; (coding-system-base coding-system)
114 ;; (let ((eol-type (coding-system-eol-type coding-system)))
115 ;; (coding-system-change-eol-conversion
116 ;; coding
117 ;; (if (numberp eol-type) (aref [unix dos mac] eol-type))))))
118
119 (defun view-hello-file () 66 (defun view-hello-file ()
120 "Display the HELLO file which list up many languages and characters." 67 "Display the HELLO file which list up many languages and characters."
121 (interactive) 68 (interactive)
122 ;; We have to decode the file in any environment. 69 ;; We have to decode the file in any environment.
123 (let ((coding-system-for-read 'iso-2022-7bit)) 70 (let ((coding-system-for-read 'iso-2022-7))
124 (find-file-read-only (expand-file-name "HELLO" data-directory)))) 71 (find-file-read-only (expand-file-name "HELLO" data-directory))))
125 72
126 (defun universal-coding-system-argument () 73 (defun universal-coding-system-argument ()
127 "Execute an I/O command using the specified coding system." 74 "Execute an I/O command using the specified coding system."
128 (interactive) 75 (interactive)
129 (let* ((default (and buffer-file-coding-system 76 (let* ((coding-system
130 (not (eq (coding-system-type buffer-file-coding-system) 77 (read-coding-system "Coding system for following command: "))
131 t))
132 (coding-system-name buffer-file-coding-system)))
133 (coding-system
134 (read-coding-system
135 (if default
136 (format "Coding system for following command (default, %s): "
137 default)
138 "Coding system for following command: ")
139 default))
140 (keyseq (read-key-sequence 78 (keyseq (read-key-sequence
141 (format "Command to execute with %s:" coding-system))) 79 (format "Command to execute with %s:" coding-system)))
142 (cmd (key-binding keyseq))) 80 (cmd (key-binding keyseq)))
143 (let ((coding-system-for-read coding-system) 81 (let ((coding-system-for-read coding-system)
144 (coding-system-for-write coding-system)) 82 (coding-system-for-write coding-system))
145 (message "") 83 (message "")
146 (call-interactively cmd)))) 84 (call-interactively cmd))))
147 85
148 (defun set-default-coding-systems (coding-system) 86 (defun set-default-coding-systems (coding-system)
149 "Set default value of various coding systems to CODING-SYSTEM. 87 "Set default value of various coding systems to CODING-SYSTEM.
150 This sets the following coding systems: 88 The follwing coding systems are set:
151 o coding system of a newly created buffer 89 o coding system of a newly created buffer
152 o default coding system for terminal output 90 o default coding system for terminal output
153 o default coding system for keyboard input 91 o default coding system for keyboard input
154 o default coding system for subprocess I/O 92 o default coding system for subprocess I/O"
155 o default coding system for converting file names."
156 (check-coding-system coding-system) 93 (check-coding-system coding-system)
157 ;;(setq-default buffer-file-coding-system coding-system) 94 ;;(setq-default buffer-file-coding-system coding-system)
158 (set-default-buffer-file-coding-system coding-system) 95 (set-default-buffer-file-coding-system coding-system)
159 ;; (if default-enable-multibyte-characters 96 ;;(setq default-terminal-coding-system coding-system)
160 ;; (setq default-file-name-coding-system coding-system)) 97 (setq terminal-coding-system coding-system)
161 ;; If coding-system is nil, honor that on MS-DOS as well, so
162 ;; that they could reset the terminal coding system.
163 ;; (unless (and (eq window-system 'pc) coding-system)
164 ;; (setq default-terminal-coding-system coding-system))
165 (set-terminal-coding-system coding-system)
166 ;;(setq default-keyboard-coding-system coding-system) 98 ;;(setq default-keyboard-coding-system coding-system)
167 (set-keyboard-coding-system coding-system) 99 (setq keyboard-coding-system coding-system)
168 ;;(setq default-process-coding-system (cons coding-system coding-system)) 100 ;;(setq default-process-coding-system (cons coding-system coding-system))
169 ;; Refer to coding-system-for-read and coding-system-for-write
170 ;; so that C-x RET c works.
171 (add-hook 'comint-exec-hook 101 (add-hook 'comint-exec-hook
172 `(lambda () 102 `(lambda ()
173 (let ((proc (get-buffer-process (current-buffer)))) 103 (let ((proc (get-buffer-process (current-buffer))))
174 (set-process-input-coding-system 104 (set-process-input-coding-system proc ',coding-system)
175 proc (or coding-system-for-read ',coding-system)) 105 (set-process-output-coding-system proc ',coding-system)))
176 (set-process-output-coding-system
177 proc (or coding-system-for-write ',coding-system))))
178 'append) 106 'append)
179 (setq file-name-coding-system coding-system)) 107 (setq file-name-coding-system coding-system))
180 108
181 (defun prefer-coding-system (coding-system) 109 (defun prefer-coding-system (coding-system)
182 "Add CODING-SYSTEM at the front of the priority list for automatic detection. 110 "Add CODING-SYSTEM at the front of the priority list for automatic detection.
183 This also sets the following coding systems: 111 This also sets the following coding systems to CODING-SYSTEM:
184 o coding system of a newly created buffer 112 o coding system of a newly created buffer
185 o default coding system for terminal output 113 o default coding system for terminal output
186 o default coding system for keyboard input 114 o default coding system for keyboard input
187 o default coding system for converting file names. 115 o default coding system for subprocess I/O"
188
189 If CODING-SYSTEM specifies a certain type of EOL conversion, the coding
190 systems set by this function will use that type of EOL conversion.
191
192 This command does not change the default value of terminal coding system
193 for MS-DOS terminal, because DOS terminals only support a single coding
194 system, and Emacs automatically sets the default to that coding system at
195 startup."
196 (interactive "zPrefer coding system: ") 116 (interactive "zPrefer coding system: ")
197 (if (not (and coding-system (find-coding-system coding-system))) 117 (if (not (and coding-system (coding-system-p coding-system)))
198 (error "Invalid coding system `%s'" coding-system)) 118 (error "Invalid coding system `%s'" coding-system))
199 (let ((coding-category (coding-system-category coding-system)) 119 (let ((coding-category (coding-system-category coding-system))
200 (base (coding-system-base coding-system)) 120 (parent (coding-system-parent coding-system)))
201 (eol-type (coding-system-eol-type coding-system)))
202 (if (not coding-category) 121 (if (not coding-category)
203 ;; CODING-SYSTEM is no-conversion or undecided. 122 ;; CODING-SYSTEM is no-conversion or undecided.
204 (error "Can't prefer the coding system `%s'" coding-system)) 123 (error "Can't prefer the coding system `%s'" coding-system))
205 (set-coding-category-system coding-category (or base coding-system)) 124 (set coding-category (or parent coding-system))
206 ;; (update-coding-systems-internal) 125 (if (not (eq coding-category (car coding-category-list)))
207 (or (eq coding-category (car (coding-category-list)))
208 ;; We must change the order. 126 ;; We must change the order.
209 (set-coding-priority-list (list coding-category))) 127 (setq coding-category-list
210 (if (and base (interactive-p)) 128 (cons coding-category
211 (message "Highest priority is set to %s (base of %s)" 129 (delq coding-category coding-category-list))))
212 base coding-system)) 130 (if (and parent (interactive-p))
213 ;; If they asked for specific EOL conversion, honor that. 131 (message "Highest priority is set to %s (parent of %s)"
214 (if (memq eol-type '(lf crlf mac)) 132 parent coding-system))
215 (setq coding-system 133 (set-default-coding-systems (or parent coding-system))))
216 (coding-system-change-eol-conversion base eol-type)) 134
217 (setq coding-system base))
218 (set-default-coding-systems coding-system)))
219
220 ;; (defun find-coding-systems-region-subset-p (list1 list2)
221 ;; "Return non-nil if all elements in LIST1 are included in LIST2.
222 ;; Comparison done with EQ."
223 ;; (catch 'tag
224 ;; (while list1
225 ;; (or (memq (car list1) list2)
226 ;; (throw 'tag nil))
227 ;; (setq list1 (cdr list1)))
228 ;; t))
229
230 ;; (defun find-coding-systems-region (from to)
231 ;; "Return a list of proper coding systems to encode a text between FROM and TO.
232 ;; All coding systems in the list can safely encode any multibyte characters
233 ;; in the text.
234 ;;
235 ;; If the text contains no multibyte characters, return a list of a single
236 ;; element `undecided'."
237 ;; (find-coding-systems-for-charsets (find-charset-region from to)))
238
239 ;; (defun find-coding-systems-string (string)
240 ;; "Return a list of proper coding systems to encode STRING.
241 ;; All coding systems in the list can safely encode any multibyte characters
242 ;; in STRING.
243 ;;
244 ;; If STRING contains no multibyte characters, return a list of a single
245 ;; element `undecided'."
246 ;; (find-coding-systems-for-charsets (find-charset-string string)))
247
248 ;; (defun find-coding-systems-for-charsets (charsets)
249 ;; "Return a list of proper coding systems to encode characters of CHARSETS.
250 ;; CHARSETS is a list of character sets."
251 ;; (if (or (null charsets)
252 ;; (and (= (length charsets) 1)
253 ;; (eq 'ascii (car charsets))))
254 ;; '(undecided)
255 ;; (setq charsets (delq 'composition charsets))
256 ;; (let ((l (coding-system-list 'base-only))
257 ;; (charset-preferred-codings
258 ;; (mapcar (function
259 ;; (lambda (x)
260 ;; (if (eq x 'unknown)
261 ;; 'raw-text
262 ;; (get-charset-property x 'preferred-coding-system))))
263 ;; charsets))
264 ;; (priorities (mapcar (function (lambda (x) (symbol-value x)))
265 ;; coding-category-list))
266 ;; codings coding safe)
267 ;; (if (memq 'unknown charsets)
268 ;; ;; The region contains invalid multibyte characters.
269 ;; (setq l '(raw-text)))
270 ;; (while l
271 ;; (setq coding (car l) l (cdr l))
272 ;; (if (and (setq safe (coding-system-get coding 'safe-charsets))
273 ;; (or (eq safe t)
274 ;; (find-coding-systems-region-subset-p charsets safe)))
275 ;; ;; We put the higher priority to coding systems included
276 ;; ;; in CHARSET-PREFERRED-CODINGS, and within them, put the
277 ;; ;; higher priority to coding systems which support smaller
278 ;; ;; number of charsets.
279 ;; (let ((priority
280 ;; (+ (if (coding-system-get coding 'mime-charset) 4096 0)
281 ;; (lsh (length (memq coding priorities)) 7)
282 ;; (if (memq coding charset-preferred-codings) 64 0)
283 ;; (if (> (coding-system-type coding) 0) 32 0)
284 ;; (if (consp safe) (- 32 (length safe)) 0))))
285 ;; (setq codings (cons (cons priority coding) codings)))))
286 ;; (mapcar 'cdr
287 ;; (sort codings (function (lambda (x y) (> (car x) (car y))))))
288 ;; )))
289
290 ;; (defun find-multibyte-characters (from to &optional maxcount excludes)
291 ;; "Find multibyte characters in the region specified by FROM and TO.
292 ;; If FROM is a string, find multibyte characters in the string.
293 ;; The return value is an alist of the following format:
294 ;; ((CHARSET COUNT CHAR ...) ...)
295 ;; where
296 ;; CHARSET is a character set,
297 ;; COUNT is a number of characters,
298 ;; CHARs are found characters of the character set.
299 ;; Optional 3rd arg MAXCOUNT limits how many CHARs are put in the above list.
300 ;; Optional 4th arg EXCLUDE is a list of character sets to be ignored.
301 ;;
302 ;; For invalid characters, CHARs are actually strings."
303 ;; (let ((chars nil)
304 ;; charset char)
305 ;; (if (stringp from)
306 ;; (let ((idx 0))
307 ;; (while (setq idx (string-match "[^\000-\177]" from idx))
308 ;; (setq char (aref from idx)
309 ;; charset (char-charset char))
310 ;; (if (eq charset 'unknown)
311 ;; (setq char (match-string 0)))
312 ;; (if (or (eq charset 'unknown)
313 ;; (not (or (eq excludes t) (memq charset excludes))))
314 ;; (let ((slot (assq charset chars)))
315 ;; (if slot
316 ;; (if (not (memq char (nthcdr 2 slot)))
317 ;; (let ((count (nth 1 slot)))
318 ;; (setcar (cdr slot) (1+ count))
319 ;; (if (or (not maxcount) (< count maxcount))
320 ;; (nconc slot (list char)))))
321 ;; (setq chars (cons (list charset 1 char) chars)))))
322 ;; (setq idx (1+ idx))))
323 ;; (save-excursion
324 ;; (goto-char from)
325 ;; (while (re-search-forward "[^\000-\177]" to t)
326 ;; (setq char (preceding-char)
327 ;; charset (char-charset char))
328 ;; (if (eq charset 'unknown)
329 ;; (setq char (match-string 0)))
330 ;; (if (or (eq charset 'unknown)
331 ;; (not (or (eq excludes t) (memq charset excludes))))
332 ;; (let ((slot (assq charset chars)))
333 ;; (if slot
334 ;; (if (not (member char (nthcdr 2 slot)))
335 ;; (let ((count (nth 1 slot)))
336 ;; (setcar (cdr slot) (1+ count))
337 ;; (if (or (not maxcount) (< count maxcount))
338 ;; (nconc slot (list char)))))
339 ;; (setq chars (cons (list charset 1 char) chars))))))))
340 ;; (nreverse chars)))
341
342 ;; (defvar last-coding-system-specified nil
343 ;; "Most recent coding system explicitly specified by the user when asked.
344 ;; This variable is set whenever Emacs asks the user which coding system
345 ;; to use in order to write a file. If you set it to nil explicitly,
346 ;; then call `write-region', then afterward this variable will be non-nil
347 ;; only if the user was explicitly asked and specified a coding system.")
348
349 ;; (defun select-safe-coding-system (from to &optional default-coding-system)
350 ;; "Ask a user to select a safe coding system from candidates.
351 ;; The candidates of coding systems which can safely encode a text
352 ;; between FROM and TO are shown in a popup window.
353 ;;
354 ;; Optional arg DEFAULT-CODING-SYSTEM specifies a coding system to be
355 ;; checked at first. If omitted, buffer-file-coding-system of the
356 ;; current buffer is used.
357 ;;
358 ;; If the text can be encoded safely by DEFAULT-CODING-SYSTEM, it is
359 ;; returned without any user interaction.
360 ;;
361 ;; Kludgy feature: if FROM is a string, the string is the target text,
362 ;; and TO is ignored."
363 ;; (or default-coding-system
364 ;; (setq default-coding-system buffer-file-coding-system))
365 ;; (let* ((charsets (if (stringp from) (find-charset-string from)
366 ;; (find-charset-region from to)))
367 ;; (safe-coding-systems (find-coding-systems-for-charsets charsets)))
368 ;; (if (or (not enable-multibyte-characters)
369 ;; (eq (car safe-coding-systems) 'undecided)
370 ;; (eq default-coding-system 'no-conversion)
371 ;; (and default-coding-system
372 ;; (memq (coding-system-base default-coding-system)
373 ;; safe-coding-systems)))
374 ;; default-coding-system
375 ;;
376 ;; ;; At first, change each coding system to the corresponding
377 ;; ;; mime-charset name if it is also a coding system.
378 ;; (let ((l safe-coding-systems)
379 ;; mime-charset)
380 ;; (while l
381 ;; (setq mime-charset (coding-system-get (car l) 'mime-charset))
382 ;; (if (and mime-charset (coding-system-p mime-charset))
383 ;; (setcar l mime-charset))
384 ;; (setq l (cdr l))))
385 ;;
386 ;; (let ((non-safe-chars (find-multibyte-characters
387 ;; from to 3
388 ;; (and default-coding-system
389 ;; (coding-system-get default-coding-system
390 ;; 'safe-charsets))))
391 ;; show-position overlays)
392 ;; (save-excursion
393 ;; ;; Highlight characters that default-coding-system can't encode.
394 ;; (when (integerp from)
395 ;; (goto-char from)
396 ;; (let ((found nil))
397 ;; (while (and (not found)
398 ;; (re-search-forward "[^\000-\177]" to t))
399 ;; (setq found (assq (char-charset (preceding-char))
400 ;; non-safe-chars))))
401 ;; (forward-line -1)
402 ;; (setq show-position (point))
403 ;; (save-excursion
404 ;; (while (and (< (length overlays) 256)
405 ;; (re-search-forward "[^\000-\177]" to t))
406 ;; (let* ((char (preceding-char))
407 ;; (charset (char-charset char)))
408 ;; (when (assq charset non-safe-chars)
409 ;; (setq overlays (cons (make-overlay (1- (point)) (point))
410 ;; overlays))
411 ;; (overlay-put (car overlays) 'face 'highlight))))))
412 ;;
413 ;; ;; At last, ask a user to select a proper coding system.
414 ;; (unwind-protect
415 ;; (save-window-excursion
416 ;; (when show-position
417 ;; ;; At first, be sure to show the current buffer.
418 ;; (set-window-buffer (selected-window) (current-buffer))
419 ;; (set-window-start (selected-window) show-position))
420 ;; ;; Then, show a helpful message.
421 ;; (with-output-to-temp-buffer "*Warning*"
422 ;; (save-excursion
423 ;; (set-buffer standard-output)
424 ;; (insert "The target text contains the following non ASCII character(s):\n")
425 ;; (let ((len (length non-safe-chars))
426 ;; (shown 0))
427 ;; (while (and non-safe-chars (< shown 3))
428 ;; (when (> (length (car non-safe-chars)) 2)
429 ;; (setq shown (1+ shown))
430 ;; (insert (format "%25s: " (car (car non-safe-chars))))
431 ;; (let ((l (nthcdr 2 (car non-safe-chars))))
432 ;; (while l
433 ;; (if (or (stringp (car l)) (char-valid-p (car l)))
434 ;; (insert (car l)))
435 ;; (setq l (cdr l))))
436 ;; (if (> (nth 1 (car non-safe-chars)) 3)
437 ;; (insert "..."))
438 ;; (insert "\n"))
439 ;; (setq non-safe-chars (cdr non-safe-chars)))
440 ;; (if (< shown len)
441 ;; (insert (format "%27s\n" "..."))))
442 ;; (insert (format "\
443 ;; These can't be encoded safely by the coding system %s.
444 ;;
445 ;; Please select one from the following safe coding systems:\n"
446 ;; default-coding-system))
447 ;; (let ((pos (point))
448 ;; (fill-prefix " "))
449 ;; (mapcar (function (lambda (x) (princ " ") (princ x)))
450 ;; safe-coding-systems)
451 ;; (fill-region-as-paragraph pos (point)))))
452 ;;
453 ;; ;; Read a coding system.
454 ;; (let* ((safe-names (mapcar (lambda (x) (list (symbol-name x)))
455 ;; safe-coding-systems))
456 ;; (name (completing-read
457 ;; (format "Select coding system (default %s): "
458 ;; (car safe-coding-systems))
459 ;; safe-names nil t nil nil
460 ;; (car (car safe-names)))))
461 ;; (setq last-coding-system-specified (intern name))
462 ;; (if (integerp (coding-system-eol-type default-coding-system))
463 ;; (setq last-coding-system-specified
464 ;; (coding-system-change-eol-conversion
465 ;; last-coding-system-specified
466 ;; (coding-system-eol-type default-coding-system))))
467 ;; last-coding-system-specified))
468 ;; (kill-buffer "*Warning*")
469 ;; (while overlays
470 ;; (delete-overlay (car overlays))
471 ;; (setq overlays (cdr overlays)))))))))
472
473 ;; (setq select-safe-coding-system-function 'select-safe-coding-system)
474
475 ;; (defun select-message-coding-system ()
476 ;; "Return a coding system to encode the outgoing message of the current buffer.
477 ;; It at first tries the first coding system found in these variables
478 ;; in this order:
479 ;; (1) local value of `buffer-file-coding-system'
480 ;; (2) value of `sendmail-coding-system'
481 ;; (3) value of `default-buffer-file-coding-system'
482 ;; (4) value of `default-sendmail-coding-system'
483 ;; If the found coding system can't encode the current buffer,
484 ;; or none of them are bound to a coding system,
485 ;; it asks the user to select a proper coding system."
486 ;; (let ((coding (or (and (local-variable-p 'buffer-file-coding-system)
487 ;; buffer-file-coding-system)
488 ;; sendmail-coding-system
489 ;; default-buffer-file-coding-system
490 ;; default-sendmail-coding-system)))
491 ;; (if (eq coding 'no-conversion)
492 ;; ;; We should never use no-conversion for outgoing mails.
493 ;; (setq coding nil))
494 ;; (if (fboundp select-safe-coding-system-function)
495 ;; (funcall select-safe-coding-system-function
496 ;; (point-min) (point-max) coding)
497 ;; coding)))
498 135
499 ;;; Language support stuff. 136 ;;; Language support staffs.
500 137
501 (defvar language-info-alist nil 138 (defvar language-info-alist nil
502 "Alist of language environment definitions. 139 "Alist of language names vs the corresponding information of various kind.
503 Each element looks like: 140 Each element looks like:
504 (LANGUAGE-NAME . ((KEY . INFO) ...)) 141 (LANGUAGE-NAME . ((KEY . INFO) ...))
505 where LANGUAGE-NAME is a string, the name of the language environment, 142 where LANGUAGE-NAME is a string,
506 KEY is a symbol denoting the kind of information, and 143 KEY is a symbol denoting the kind of information,
507 INFO is the data associated with KEY. 144 INFO is any Lisp object which contains the actual information related
508 Meaningful values for KEY include 145 to KEY.")
509 146
510 documentation value is documentation of what this language environment 147 (defun get-language-info (language-name key)
511 is meant for, and how to use it. 148 "Return the information for LANGUAGE-NAME of the kind KEY.
512 charset value is a list of the character sets used by this 149 KEY is a symbol denoting the kind of required information."
513 language environment. 150 (if (symbolp language-name)
514 sample-text value is one line of text, 151 (setq language-name (symbol-name language-name)))
515 written using those character sets, 152 (let ((lang-slot (assoc-ignore-case language-name language-info-alist)))
516 appropriate for this language environment.
517 setup-function value is a function to call to switch to this
518 language environment.
519 exit-function value is a function to call to leave this
520 language environment.
521 coding-system value is a list of coding systems that are good
522 for saving text written in this language environment.
523 This list serves as suggestions to the user;
524 in effect, as a kind of documentation.
525 coding-priority value is a list of coding systems for this language
526 environment, in order of decreasing priority.
527 This is used to set up the coding system priority
528 list when you switch to this language environment.
529 input-method value is a default input method for this language
530 environment.
531 features value is a list of features requested in this
532 language environment.
533 tutorial value is a tutorial file name written in the language.")
534
535 (defun get-language-info (lang-env key)
536 "Return information listed under KEY for language environment LANG-ENV.
537 KEY is a symbol denoting the kind of information.
538 For a list of useful values for KEY and their meanings,
539 see `language-info-alist'."
540 (if (symbolp lang-env)
541 (setq lang-env (symbol-name lang-env)))
542 (let ((lang-slot (assoc-ignore-case lang-env language-info-alist)))
543 (if lang-slot 153 (if lang-slot
544 (cdr (assq key (cdr lang-slot)))))) 154 (cdr (assq key (cdr lang-slot))))))
545 155
546 (defun set-language-info (lang-env key info) 156 (defun set-language-info (language-name key info)
547 "Modify part of the definition of language environment LANG-ENV. 157 "Set for LANGUAGE-NAME the information INFO under KEY.
548 Specifically, this stores the information INFO under KEY
549 in the definition of this language environment.
550 KEY is a symbol denoting the kind of information. 158 KEY is a symbol denoting the kind of information.
551 INFO is the value for that information. 159 INFO is any Lisp object which contains the actual information.
552 160
553 For a list of useful values for KEY and their meanings, 161 Currently, the following KEYs are used by Emacs:
554 see `language-info-alist'." 162
555 (if (symbolp lang-env) 163 charset: list of symbols whose values are charsets specific to the language.
556 (setq lang-env (symbol-name lang-env))) 164
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)))
557 (let (lang-slot key-slot) 189 (let (lang-slot key-slot)
558 (setq lang-slot (assoc lang-env language-info-alist)) 190 (setq lang-slot (assoc language-name language-info-alist))
559 (if (null lang-slot) ; If no slot for the language, add it. 191 (if (null lang-slot) ; If no slot for the language, add it.
560 (setq lang-slot (list lang-env) 192 (setq lang-slot (list language-name)
561 language-info-alist (cons lang-slot language-info-alist))) 193 language-info-alist (cons lang-slot language-info-alist)))
562 (setq key-slot (assq key lang-slot)) 194 (setq key-slot (assq key lang-slot))
563 (if (null key-slot) ; If no slot for the key, add it. 195 (if (null key-slot) ; If no slot for the key, add it.
564 (progn 196 (progn
565 (setq key-slot (list key)) 197 (setq key-slot (list key))
566 (setcdr lang-slot (cons key-slot (cdr lang-slot))))) 198 (setcdr lang-slot (cons key-slot (cdr lang-slot)))))
567 (setcdr key-slot info))) 199 ;; Setup menu.
568 200 (cond ((eq key 'documentation)
569 (defun set-language-info-alist (lang-env alist &optional parents) 201 ;; (define-key-after
570 "Store ALIST as the definition of language environment LANG-ENV. 202 ;; (if (consp info)
571 ALIST is an alist of KEY and INFO values. See the documentation of 203 ;; (prog1 (symbol-value (cdr info))
204 ;; (setq info (car info)))
205 ;; describe-language-environment-map)
206 ;; (vector (intern language-name))
207 ;; (cons language-name 'describe-specified-language-support)
208 ;; t)
209 (if (consp info)
210 (setq info (car info)))
211 (when (featurep 'menubar)
212 (eval-after-load
213 "menubar-items.elc"
214 `(add-menu-button
215 '("Mule" "Describe Language Support")
216 (vector ,language-name
217 '(describe-language-environment ,language-name)
218 t))))
219 )
220 ((eq key 'setup-function)
221 ;; (define-key-after
222 ;; (if (consp info)
223 ;; (prog1 (symbol-value (cdr info))
224 ;; (setq info (car info)))
225 ;; setup-language-environment-map)
226 ;; (vector (intern language-name))
227 ;; (cons language-name 'setup-specified-language-environment)
228 ;; t)
229 (if (consp info)
230 (setq info (car info)))
231 (when (featurep 'menubar)
232 (eval-after-load
233 "menubar-items.elc"
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
572 `set-language-info' for the meanings of KEY and INFO." 247 `set-language-info' for the meanings of KEY and INFO."
573 (if (symbolp lang-env) 248 (if (symbolp language-name)
574 (setq lang-env (symbol-name lang-env))) 249 (setq language-name (symbol-name language-name)))
575 (let (; (describe-map describe-language-environment-map) 250 (while alist
576 ; (setup-map setup-language-environment-map) 251 (set-language-info language-name (car (car alist)) (cdr (car alist)))
577 ) 252 (setq alist (cdr alist))))
578 ;; (if parents
579 ;; (let ((l parents)
580 ;; map parent-symbol parent)
581 ;; (while l
582 ;; (if (symbolp (setq parent-symbol (car l)))
583 ;; (setq parent (symbol-name parent))
584 ;; (setq parent parent-symbol parent-symbol (intern parent)))
585 ;; (setq map (lookup-key describe-map (vector parent-symbol)))
586 ;; (if (not map)
587 ;; (progn
588 ;; (setq map (intern (format "describe-%s-environment-map"
589 ;; (downcase parent))))
590 ;; (define-prefix-command map)
591 ;; (define-key-after describe-map (vector parent-symbol)
592 ;; (cons parent map) t)))
593 ;; (setq describe-map (symbol-value map))
594 ;; (setq map (lookup-key setup-map (vector parent-symbol)))
595 ;; (if (not map)
596 ;; (progn
597 ;; (setq map (intern (format "setup-%s-environment-map"
598 ;; (downcase parent))))
599 ;; (define-prefix-command map)
600 ;; (define-key-after setup-map (vector parent-symbol)
601 ;; (cons parent map) t)))
602 ;; (setq setup-map (symbol-value map))
603 ;; (setq l (cdr l)))))
604
605 ;; Set up menu items for this language env.
606 (let ((doc (assq 'documentation alist)))
607 (when doc
608 ;; (define-key-after describe-map (vector (intern lang-env))
609 ;; (cons lang-env 'describe-specified-language-support) t)
610 (when (featurep 'menubar)
611 (eval-after-load
612 "menubar-items.elc"
613 `(add-menu-button
614 '("%_Edit" "%_Multilingual (\"Mule\")"
615 "%_Describe Language Support")
616 (vector ,lang-env
617 '(describe-language-environment ,lang-env)
618 t))))
619 ))
620 ;; (define-key-after setup-map (vector (intern lang-env))
621 ;; (cons lang-env 'setup-specified-language-environment) t)
622 (when (featurep 'menubar)
623 (eval-after-load
624 "menubar-items.elc"
625 `(add-menu-button
626 '("%_Edit" "%_Multilingual (\"Mule\")"
627 "%_Set Language Environment")
628 (vector ,lang-env
629 '(set-language-environment ,lang-env)
630 t))))
631
632 (while alist
633 (set-language-info lang-env (car (car alist)) (cdr (car alist)))
634 (setq alist (cdr alist)))))
635 253
636 (defun read-language-name (key prompt &optional default) 254 (defun read-language-name (key prompt &optional default)
637 "Read a language environment name which has information for KEY. 255 "Read language name which has information for KEY, prompting with PROMPT.
638 If KEY is nil, read any language environment. 256 DEFAULT is the default choice of language.
639 Prompt with PROMPT. DEFAULT is the default choice of language environment. 257 This returns a language name as a string."
640 This returns a language environment name as a string."
641 (let* ((completion-ignore-case t) 258 (let* ((completion-ignore-case t)
642 (name (completing-read prompt 259 (name (completing-read prompt
643 language-info-alist 260 language-info-alist
644 (and key 261 (function (lambda (elm) (assq key elm)))
645 (function (lambda (elm) (assq key elm)))) 262 t nil default)))
646 t nil nil default)))
647 (if (and (> (length name) 0) 263 (if (and (> (length name) 0)
648 (or (not key) 264 (get-language-info name key))
649 (get-language-info name key)))
650 name))) 265 name)))
651 266
652 ;;; Multilingual input methods. 267 ;;; Multilingual input methods.
653 268
654 (defconst leim-list-file-name "leim-list.el" 269 (defconst leim-list-file-name "leim-list.el"
659 274
660 (defvar leim-list-header (format 275 (defvar leim-list-header (format
661 ";;; %s -- list of LEIM (Library of Emacs Input Method) 276 ";;; %s -- list of LEIM (Library of Emacs Input Method)
662 ;; 277 ;;
663 ;; This file contains a list of LEIM (Library of Emacs Input Method) 278 ;; This file contains a list of LEIM (Library of Emacs Input Method)
664 ;; in the same directory as this file. Loading this file registers 279 ;; in the same directory as this file. Loading this file registeres
665 ;; the whole input methods in Emacs. 280 ;; the whole input methods in Emacs.
666 ;; 281 ;;
667 ;; Each entry has the form: 282 ;; Each entry has the form:
668 ;; (register-input-method 283 ;; (register-input-method
669 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC 284 ;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC
704 "Title string of the current input method shown in mode line.") 319 "Title string of the current input method shown in mode line.")
705 (make-variable-buffer-local 'current-input-method-title) 320 (make-variable-buffer-local 'current-input-method-title)
706 (put 'current-input-method-title 'permanent-local t) 321 (put 'current-input-method-title 'permanent-local t)
707 322
708 (defcustom default-input-method nil 323 (defcustom default-input-method nil
709 "*Default input method for multilingual text (a string). 324 "*Default input method for multilingual text.
710 This is the input method activated automatically by the command 325 This is the input method activated automatically by the command
711 `toggle-input-method' (\\[toggle-input-method])." 326 `toggle-input-method' (\\[toggle-input-method])."
712 :group 'mule 327 :group 'mule)
713 :type '(choice (const nil) string))
714
715 (put 'input-method-function 'permanent-local t)
716 328
717 (defvar input-method-history nil 329 (defvar input-method-history nil
718 "History list for some commands that read input methods.") 330 "History list for some commands that read input methods.")
719 (make-variable-buffer-local 'input-method-history) 331 (make-variable-buffer-local 'input-method-history)
720 (put 'input-method-history 'permanent-local t) 332 (put 'input-method-history 'permanent-local t)
734 This function is called with no argument.") 346 This function is called with no argument.")
735 (make-variable-buffer-local 'describe-current-input-method-function) 347 (make-variable-buffer-local 'describe-current-input-method-function)
736 (put 'describe-current-input-method-function 'permanent-local t) 348 (put 'describe-current-input-method-function 'permanent-local t)
737 349
738 (defvar input-method-alist nil 350 (defvar input-method-alist nil
739 "Alist of input method names vs how to use them. 351 "Alist of input method names vs the corresponding information to use it.
740 Each element has the form: 352 Each element has the form:
741 (INPUT-METHOD LANGUAGE-ENV ACTIVATE-FUNC TITLE DESCRIPTION ARGS...) 353 (INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC TITLE DESCRIPTION ...)
742 See the function `register-input-method' for the meanings of the elements.") 354 See the function `register-input-method' for the meanings of each elements.")
743 355
744 (defun register-input-method (input-method lang-env &rest args) 356 (defun register-input-method (input-method language-name &rest args)
745 "Register INPUT-METHOD as an input method for language environment ENV. 357 "Register INPUT-METHOD as an input method for LANGUAGE-NAME.
746 INPUT-METHOD and LANG-ENV are symbols or strings. 358 INPUT-METHOD and LANGUAGE-NAME are symbols or strings.
747
748 The remaining arguments are: 359 The remaining arguments are:
749 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARGS... 360 ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARG ...
750 ACTIVATE-FUNC is a function to call to activate this method. 361 where,
751 TITLE is a string to show in the mode line when this method is active. 362 ACTIVATE-FUNC is a function to call for activating this method.
752 DESCRIPTION is a string describing this method and what it is good for. 363 TITLE is a string shown in mode-line while this method is active,
753 The ARGS, if any, are passed as arguments to ACTIVATE-FUNC. 364 DESCRIPTION is a string describing about this method,
754 All told, the arguments to ACTIVATE-FUNC are INPUT-METHOD and the ARGS. 365 Arguments to ACTIVATE-FUNC are INPUT-METHOD and ARGs."
755 366 (if (symbolp language-name)
756 This function is mainly used in the file \"leim-list.el\" which is 367 (setq language-name (symbol-name language-name)))
757 created at building time of emacs, registering all quail input methods
758 contained in the emacs distribution.
759
760 In case you want to register a new quail input method by yourself, be
761 careful to use the same input method title as given in the third
762 parameter of `quail-define-package' (if the values are different, the
763 string specified in this function takes precedence).
764
765 The commands `describe-input-method' and `list-input-methods' need
766 this duplicated values to show some information about input methods
767 without loading the affected quail packages."
768 (if (symbolp lang-env)
769 (setq lang-env (symbol-name lang-env)))
770 (if (symbolp input-method) 368 (if (symbolp input-method)
771 (setq input-method (symbol-name input-method))) 369 (setq input-method (symbol-name input-method)))
772 (let ((info (cons lang-env args)) 370 (let ((info (cons language-name args))
773 (slot (assoc input-method input-method-alist))) 371 (slot (assoc input-method input-method-alist)))
774 (if slot 372 (if slot
775 (setcdr slot info) 373 (setcdr slot info)
776 (setq slot (cons input-method info)) 374 (setq slot (cons input-method info))
777 (setq input-method-alist (cons slot input-method-alist))))) 375 (setq input-method-alist (cons slot input-method-alist)))))
787 (setq prompt (format prompt default))) 385 (setq prompt (format prompt default)))
788 (let* ((completion-ignore-case t) 386 (let* ((completion-ignore-case t)
789 ;; This binding is necessary because input-method-history is 387 ;; This binding is necessary because input-method-history is
790 ;; buffer local. 388 ;; buffer local.
791 (input-method (completing-read prompt input-method-alist 389 (input-method (completing-read prompt input-method-alist
792 nil t nil 'input-method-history 390 nil t nil 'input-method-history)
793 default))) 391 ;;default)
794 (if (and input-method (symbolp input-method)) 392 ))
795 (setq input-method (symbol-name input-method)))
796 (if (> (length input-method) 0) 393 (if (> (length input-method) 0)
797 input-method 394 input-method
798 (if inhibit-null 395 (if inhibit-null
799 (error "No valid input method is specified"))))) 396 (error "No valid input method is specified")))))
800 397
801 (defun activate-input-method (input-method) 398 (defun activate-input-method (input-method)
802 "Switch to input method INPUT-METHOD for the current buffer. 399 "Turn INPUT-METHOD on.
803 If some other input method is already active, turn it off first. 400 If some input method is already on, turn it off at first."
804 If INPUT-METHOD is nil, deactivate any current input method." 401 (if (symbolp input-method)
805 (if (and input-method (symbolp input-method))
806 (setq input-method (symbol-name input-method))) 402 (setq input-method (symbol-name input-method)))
807 (if (and current-input-method 403 (if (and current-input-method
808 (not (string= current-input-method input-method))) 404 (not (string= current-input-method input-method)))
809 (inactivate-input-method)) 405 (inactivate-input-method))
810 (unless (or current-input-method (null input-method)) 406 (unless current-input-method
811 (let ((slot (assoc input-method input-method-alist))) 407 (let ((slot (assoc input-method input-method-alist)))
812 (if (null slot) 408 (if (null slot)
813 (error "Can't activate input method `%s'" input-method)) 409 (error "Can't activate input method `%s'" input-method))
814 (let ((func (nth 2 slot))) 410 (apply (nth 2 slot) input-method (nthcdr 5 slot))
815 (if (functionp func)
816 (apply (nth 2 slot) input-method (nthcdr 5 slot))
817 (if (and (consp func) (symbolp (car func)) (symbolp (cdr func)))
818 (progn
819 (require (cdr func))
820 (apply (car func) input-method (nthcdr 5 slot)))
821 (error "Can't activate input method `%s'" input-method))))
822 (setq current-input-method input-method) 411 (setq current-input-method input-method)
823 (setq current-input-method-title (nth 3 slot)) 412 (setq current-input-method-title (nth 3 slot))
824 (unwind-protect 413 (run-hooks 'input-method-activate-hook))))
825 (run-hooks 'input-method-activate-hook)
826 (force-mode-line-update)))))
827 414
828 (defun inactivate-input-method () 415 (defun inactivate-input-method ()
829 "Turn off the current input method." 416 "Turn off the current input method."
830 (when current-input-method 417 (when current-input-method
831 (if input-method-history 418 (if input-method-history
837 (unwind-protect 424 (unwind-protect
838 (funcall inactivate-current-input-method-function) 425 (funcall inactivate-current-input-method-function)
839 (unwind-protect 426 (unwind-protect
840 (run-hooks 'input-method-inactivate-hook) 427 (run-hooks 'input-method-inactivate-hook)
841 (setq current-input-method nil 428 (setq current-input-method nil
842 current-input-method-title nil) 429 current-input-method-title nil)))))
843 (force-mode-line-update))))) 430
844 431 (defun select-input-method (input-method)
845 (defun set-input-method (input-method) 432 "Select and turn on INPUT-METHOD.
846 "Select and activate input method INPUT-METHOD for the current buffer. 433 This sets the default input method to what you specify,
847 This also sets the default input method to the one you specify." 434 and turn it on for the current buffer."
848 (interactive 435 (interactive
849 (let* ((default (or (car input-method-history) default-input-method))) 436 (let* ((default (or (car input-method-history) default-input-method)))
850 (list (read-input-method-name 437 (list (read-input-method-name
851 (if default "Select input method (default %s): " "Select input method: ") 438 (if default "Select input method (default %s): " "Select input method: ")
852 default t)))) 439 default t))))
854 (setq default-input-method input-method)) 441 (setq default-input-method input-method))
855 442
856 (defun toggle-input-method (&optional arg) 443 (defun toggle-input-method (&optional arg)
857 "Turn on or off a multilingual text input method for the current buffer. 444 "Turn on or off a multilingual text input method for the current buffer.
858 445
859 With no prefix argument, if an input method is currently activated, 446 With arg, read an input method from minibuffer and turn it on.
860 turn it off. Otherwise, activate an input method -- the one most 447
861 recently used, or the one specified in `default-input-method', or 448 Without arg, if some input method is currently activated, turn it off,
862 the one read from the minibuffer. 449 else turn on an input method selected last time
863 450 or the default input method (see `default-input-method').
864 With a prefix argument, read an input method from the minibuffer and 451
865 turn it on. 452 When there's no input method to turn on, turn on what read from minibuffer."
866
867 The default is to use the most recent input method specified
868 \(not including the currently active input method, if any)."
869 (interactive "P") 453 (interactive "P")
870 (if (and current-input-method (not arg)) 454 (let* ((default (or (car input-method-history) default-input-method)))
871 (inactivate-input-method) 455 (if (and current-input-method (not arg))
872 (let ((default (or (car input-method-history) default-input-method))) 456 (inactivate-input-method)
873 (if (and arg default (equal current-input-method default)
874 (> (length input-method-history) 1))
875 (setq default (nth 1 input-method-history)))
876 (activate-input-method 457 (activate-input-method
877 (if (or arg (not default)) 458 (if (or arg (not default))
878 (progn 459 (read-input-method-name
879 (read-input-method-name 460 (if default "Input method (default %s): " "Input method: " )
880 (if default "Input method (default %s): " "Input method: " ) 461 default t)
881 default t))
882 default)) 462 default))
883 (or default-input-method 463 (or default-input-method
884 (setq default-input-method current-input-method))))) 464 (setq default-input-method current-input-method)))))
885 465
886 (defun describe-input-method (input-method) 466 (defun describe-input-method (input-method)
887 "Describe input method INPUT-METHOD." 467 "Describe input method INPUT-METHOD."
888 (interactive 468 (interactive
889 (list (read-input-method-name 469 (list (read-input-method-name
890 "Describe input method (default, current choice): "))) 470 "Describe input method (default, current choice): ")))
891 (if (and input-method (symbolp input-method)) 471 (if (and input-method (symbolp input-method))
892 (setq input-method (symbol-name input-method))) 472 (setq input-method (symbol-name input-method)))
902 (if current-input-method 482 (if current-input-method
903 (if (and (symbolp describe-current-input-method-function) 483 (if (and (symbolp describe-current-input-method-function)
904 (fboundp describe-current-input-method-function)) 484 (fboundp describe-current-input-method-function))
905 (funcall describe-current-input-method-function) 485 (funcall describe-current-input-method-function)
906 (message "No way to describe the current input method `%s'" 486 (message "No way to describe the current input method `%s'"
907 current-input-method) 487 (cdr current-input-method))
908 (ding)) 488 (ding))
909 (error "No input method is activated now"))) 489 (error "No input method is activated now")))
910 490
911 (defun read-multilingual-string (prompt &optional initial-input input-method) 491 (defun read-multilingual-string (prompt &optional initial-input
492 input-method)
912 "Read a multilingual string from minibuffer, prompting with string PROMPT. 493 "Read a multilingual string from minibuffer, prompting with string PROMPT.
913 The input method selected last time is activated in minibuffer. 494 The input method selected last time is activated in minibuffer.
914 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer 495 If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer
915 initially. 496 initially.
916 Optional 3rd argument INPUT-METHOD specifies the input method 497 Optional 3rd argument INPUT-METHOD specifies the input method
917 to be activated instead of the one selected last time. It is a symbol 498 to be activated instead of the one selected last time. It is a symbol
918 or a string." 499 or a string."
919 (setq input-method 500 (setq input-method
920 (or input-method 501 (or input-method
921 current-input-method
922 default-input-method 502 default-input-method
923 (read-input-method-name "Input method: " nil t))) 503 (read-input-method-name "Input method: " nil t)))
924 (if (and input-method (symbolp input-method)) 504 (if (and input-method (symbolp input-method))
925 (setq input-method (symbol-name input-method))) 505 (setq input-method (symbol-name input-method)))
926 (let ((prev-input-method current-input-method)) 506 (let ((current-input-method input-method))
927 (unwind-protect 507 ;; FSFmacs
928 (progn 508 ;; (read-string prompt initial-input nil nil t)))
929 (activate-input-method input-method) 509 (read-string prompt initial-input nil)))
930 ;; FSF Emacs
931 ;; (read-string prompt initial-input nil nil t)
932 (read-string prompt initial-input nil))
933 (activate-input-method prev-input-method))))
934 510
935 ;; Variables to control behavior of input methods. All input methods 511 ;; Variables to control behavior of input methods. All input methods
936 ;; should react to these variables. 512 ;; should react to these variables.
937 513
938 (defcustom input-method-verbose-flag 'default 514 (defcustom input-method-verbose-flag t
939 "*A flag to control extra guidance given by input methods. 515 "*If this flag is non-nil, input methods give extra guidance.
940 The value should be nil, t, `complex-only', or `default'.
941 516
942 The extra guidance is done by showing list of available keys in echo 517 The extra guidance is done by showing list of available keys in echo
943 area. When you use the input method in the minibuffer, the guidance 518 area.
944 is shown at the bottom short window (split from the existing window). 519
945 520 For complex input methods such as `chinese-py' and `japanese',
946 If the value is t, extra guidance is always given, if the value is 521 when you use the input method in the minibuffer, the guidance is
947 nil, extra guidance is always suppressed. 522 shown at the bottom short window (split from the existing window).
948 523 For simple input methods, guidance is not shown
949 If the value is `complex-only', only complex input methods such as 524 when you are in the minibuffer."
950 `chinese-py' and `japanese' give extra guidance. 525 :type 'boolean
951
952 If the value is `default', complex input methods always give extra
953 guidance, but simple input methods give it only when you are not in
954 the minibuffer.
955
956 See also the variable `input-method-highlight-flag'."
957 :type '(choice (const t) (const nil) (const complex-only) (const default))
958 :group 'mule) 526 :group 'mule)
959 527
960 (defcustom input-method-highlight-flag t 528 (defcustom input-method-highlight-flag t
961 "*If this flag is non-nil, input methods highlight partially-entered text. 529 "*If this flag is non-nil, input methods highlight partially-entered text.
962 For instance, while you are in the middle of a Quail input method sequence, 530 For instance, while you are in the middle of a Quail input method sequence,
963 the text inserted so far is temporarily underlined. 531 the text inserted so far is temporarily underlined.
964 The underlining goes away when you finish or abort the input method sequence. 532 The underlining goes away when you finish or abort the input method sequence."
965 See also the variable `input-method-verbose-flag'."
966 :type 'boolean 533 :type 'boolean
967 :group 'mule) 534 :group 'mule)
968 535
969 (defvar input-method-activate-hook nil 536 (defvar input-method-activate-hook nil
970 "Normal hook run just after an input method is activated. 537 "Normal hook run just after an input method is activated.
974 541
975 (defvar input-method-inactivate-hook nil 542 (defvar input-method-inactivate-hook nil
976 "Normal hook run just after an input method is inactivated. 543 "Normal hook run just after an input method is inactivated.
977 544
978 The variable `current-input-method' still keeps the input method name 545 The variable `current-input-method' still keeps the input method name
979 just inactivated.") 546 just inacitvated.")
980 547
981 (defvar input-method-after-insert-chunk-hook nil 548 (defvar input-method-after-insert-chunk-hook nil
982 "Normal hook run just after an input method insert some chunk of text.") 549 "Normal hook run just after an input method insert some chunk of text.")
983
984 (defvar input-method-exit-on-first-char nil
985 "This flag controls a timing when an input method returns.
986 Usually, the input method does not return while there's a possibility
987 that it may find a different translation if a user types another key.
988 But, it this flag is non-nil, the input method returns as soon as
989 the current key sequence gets long enough to have some valid translation.")
990
991 (defvar input-method-use-echo-area nil
992 "This flag controls how an input method shows an intermediate key sequence.
993 Usually, the input method inserts the intermediate key sequence,
994 or candidate translations corresponding to the sequence,
995 at point in the current buffer.
996 But, if this flag is non-nil, it displays them in echo area instead.")
997 550
998 (defvar input-method-exit-on-invalid-key nil 551 (defvar input-method-exit-on-invalid-key nil
999 "This flag controls the behaviour of an input method on invalid key input. 552 "This flag controls the behaviour of an input method on invalid key input.
1000 Usually, when a user types a key which doesn't start any character 553 Usually, when a user types a key which doesn't start any character
1001 handled by the input method, the key is handled by turning off the 554 handled by the input method, the key is handled by turning off the
1002 input method temporarily. After that key, the input method is re-enabled. 555 input method temporalily. After the key is handled, the input method is
556 back on.
1003 But, if this flag is non-nil, the input method is never back on.") 557 But, if this flag is non-nil, the input method is never back on.")
1004 558
1005 559
1006 (defvar set-language-environment-hook nil
1007 "Normal hook run after some language environment is set.
1008
1009 When you set some hook function here, that effect usually should not
1010 be inherited to another language environment. So, you had better set
1011 another function in `exit-language-environment-hook' (which see) to
1012 cancel the effect.")
1013
1014 (defvar exit-language-environment-hook nil
1015 "Normal hook run after exiting from some language environment.
1016 When this hook is run, the variable `current-language-environment'
1017 is still bound to the language environment being exited.
1018
1019 This hook is mainly used for canceling the effect of
1020 `set-language-environment-hook' (which-see).")
1021
1022 (put 'setup-specified-language-environment 'apropos-inhibit t)
1023
1024 (defun setup-specified-language-environment () 560 (defun setup-specified-language-environment ()
1025 "Switch to a specified language environment." 561 "Set up multi-lingual environment convenient for the specified language."
1026 (interactive) 562 (interactive)
1027 (let (language-name) 563 (let (language-name)
1028 (if (and (symbolp last-command-event) 564 (if (and (symbolp last-command-event)
1029 (or (not (eq last-command-event 'Default)) 565 (or (not (eq last-command-event 'Default))
1030 (setq last-command-event 'English)) 566 (setq last-command-event 'English))
1031 (setq language-name (symbol-name last-command-event))) 567 (setq language-name (symbol-name last-command-event)))
1032 (set-language-environment language-name) 568 (set-language-environment language-name)
1033 (error "Bogus calling sequence")))) 569 (error "Bogus calling sequence"))))
1034 570
1035 (defcustom current-language-environment "English" 571 (defvar current-language-environment "English"
1036 "The last language environment specified with `set-language-environment'. 572 "The last language environment specified with `set-language-environment'.")
1037 This variable should be set only with \\[customize], which is equivalent
1038 to using the function `set-language-environment'."
1039 :link '(custom-manual "(emacs)Language Environments")
1040 :set (lambda (symbol value) (set-language-environment value))
1041 :get (lambda (x)
1042 (or (car-safe (assoc-ignore-case
1043 (if (symbolp current-language-environment)
1044 (symbol-name current-language-environment)
1045 current-language-environment)
1046 language-info-alist))
1047 "English"))
1048 :type (cons 'choice (mapcar (lambda (lang)
1049 (list 'const (car lang)))
1050 language-info-alist))
1051 :initialize 'custom-initialize-default
1052 :group 'mule
1053 :type 'string)
1054
1055 (defun reset-language-environment ()
1056 "Reset multilingual environment of Emacs to the default status.
1057
1058 The default status is as follows:
1059
1060 The default value of buffer-file-coding-system is nil.
1061 The default coding system for process I/O is nil.
1062 The default value for the command `set-terminal-coding-system' is nil.
1063 The default value for the command `set-keyboard-coding-system' is nil.
1064
1065 The order of priorities of coding categories and the coding system
1066 bound to each category are as follows
1067 coding category coding system
1068 --------------------------------------------------
1069 iso-8-2 iso-8859-1
1070 iso-8-1 iso-8859-1
1071 iso-7 iso-2022-7bit
1072 iso-lock-shift iso-2022-lock
1073 iso-8-designate iso-2022-8bit-ss2
1074 no-conversion raw-text
1075 shift-jis shift_jis
1076 big5 big5
1077 ucs-4 ----
1078 utf-8 ----
1079 "
1080 (interactive)
1081 ;; This function formerly set default-enable-multibyte-characters to t,
1082 ;; but that is incorrect. It should not alter the unibyte/multibyte choice.
1083
1084 (set-coding-category-system 'iso-7 'iso-2022-7bit)
1085 (set-coding-category-system 'iso-8-1 'iso-8859-1)
1086 (set-coding-category-system 'iso-8-2 'iso-8859-1)
1087 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
1088 (set-coding-category-system 'iso-8-designate 'iso-2022-8bit-ss2)
1089 (set-coding-category-system 'no-conversion 'raw-text)
1090 (set-coding-category-system 'shift-jis 'shift_jis)
1091 (set-coding-category-system 'big5 'big5)
1092 (cond ((eq (coding-system-type (coding-category-system 'utf-8)) 'utf-8)
1093 (set-coding-category-system 'ucs-4 'iso-10646-ucs-4)
1094 (set-coding-category-system 'utf-8 'utf-8)
1095 (set-coding-priority-list
1096 '(iso-8-1
1097 iso-8-2
1098 iso-7
1099 iso-lock-shift
1100 iso-8-designate
1101 utf-8
1102 ucs-4
1103 no-conversion
1104 shift-jis
1105 big5))
1106 )
1107 (t
1108 (set-coding-priority-list
1109 '(iso-8-1
1110 iso-8-2
1111 iso-7
1112 iso-lock-shift
1113 iso-8-designate
1114 no-conversion
1115 shift-jis
1116 big5))
1117 ))
1118
1119 ;; (update-coding-systems-internal)
1120
1121 (set-default-coding-systems nil)
1122 ;; Don't alter the terminal and keyboard coding systems here.
1123 ;; The terminal still supports the same coding system
1124 ;; that it supported a minute ago.
1125 ;;; (set-terminal-coding-system-internal nil)
1126 ;;; (set-keyboard-coding-system-internal nil)
1127
1128 ;; (setq nonascii-translation-table nil
1129 ;; nonascii-insert-offset 0)
1130 )
1131 573
1132 (defun set-language-environment (language-name) 574 (defun set-language-environment (language-name)
1133 "Set up multi-lingual environment for using LANGUAGE-NAME. 575 "Set up multi-lingual environment for using LANGUAGE-NAME.
1134 This sets the coding system priority and the default input method 576 This sets the coding system priority and the default input method
1135 and sometimes other things. LANGUAGE-NAME should be a string 577 and sometimes other things."
1136 which is the name of a language environment. For example, \"Latin-1\" 578 (interactive (list (read-language-name 'setup-function
1137 specifies the character set for the major languages of Western Europe." 579 "Set language environment: ")))
1138 (interactive (list (read-language-name
1139 nil
1140 "Set language environment (default, English): ")))
1141 (if language-name 580 (if language-name
1142 (if (symbolp language-name) 581 (if (symbolp language-name)
1143 (setq language-name (symbol-name language-name))) 582 (setq language-name (symbol-name language-name)))
1144 (setq language-name "English")) 583 (setq language-name "English"))
1145 (or (assoc-ignore-case language-name language-info-alist) 584 (if (null (get-language-info language-name 'setup-function))
1146 (error "Language environment not defined: %S" language-name)) 585 (error "Language environment not defined: %S" language-name))
1147 (if current-language-environment 586 (funcall (get-language-info language-name 'setup-function))
1148 (let ((func (get-language-info current-language-environment 587 (setq current-language-environment language-name)
1149 'exit-function)))
1150 (run-hooks 'exit-language-environment-hook)
1151 (if (fboundp func) (funcall func))))
1152 (let ((default-eol-type (coding-system-eol-type
1153 default-buffer-file-coding-system)))
1154 (reset-language-environment)
1155
1156 (setq current-language-environment language-name)
1157 (set-language-environment-coding-systems language-name default-eol-type))
1158 (let ((input-method (get-language-info language-name 'input-method)))
1159 (when input-method
1160 (setq default-input-method input-method)
1161 (if input-method-history
1162 (setq input-method-history
1163 (cons input-method
1164 (delete input-method input-method-history))))))
1165 ;; (let ((nonascii (get-language-info language-name 'nonascii-translation))
1166 ;; (dos-table
1167 ;; (if (eq window-system 'pc)
1168 ;; (intern
1169 ;; (concat "cp" dos-codepage "-nonascii-translation-table")))))
1170 ;; (cond
1171 ;; ((char-table-p nonascii)
1172 ;; (setq nonascii-translation-table nonascii))
1173 ;; ((and (eq window-system 'pc) (boundp dos-table))
1174 ;; ;; DOS terminals' default is to use a special non-ASCII translation
1175 ;; ;; table as appropriate for the installed codepage.
1176 ;; (setq nonascii-translation-table (symbol-value dos-table)))
1177 ;; ((charsetp nonascii)
1178 ;; (setq nonascii-insert-offset (- (make-char nonascii) 128)))))
1179
1180 ;; (setq charset-origin-alist
1181 ;; (get-language-info language-name 'charset-origin-alist))
1182
1183 ;; Unibyte setups if necessary.
1184 ;; (unless default-enable-multibyte-characters
1185 ;; ;; Syntax and case table.
1186 ;; (let ((syntax (get-language-info language-name 'unibyte-syntax)))
1187 ;; (if syntax
1188 ;; (let ((set-case-syntax-set-multibyte nil))
1189 ;; (load syntax nil t))
1190 ;; ;; No information for syntax and case. Reset to the defaults.
1191 ;; (let ((syntax-table (standard-syntax-table))
1192 ;; (case-table (standard-case-table))
1193 ;; (ch (if (eq window-system 'pc) 128 160)))
1194 ;; (while (< ch 256)
1195 ;; (modify-syntax-entry ch " " syntax-table)
1196 ;; (aset case-table ch ch)
1197 ;; (setq ch (1+ ch)))
1198 ;; (set-char-table-extra-slot case-table 0 nil)
1199 ;; (set-char-table-extra-slot case-table 1 nil)
1200 ;; (set-char-table-extra-slot case-table 2 nil))
1201 ;; (set-standard-case-table (standard-case-table))
1202 ;; (let ((list (buffer-list)))
1203 ;; (while list
1204 ;; (with-current-buffer (car list)
1205 ;; (set-case-table (standard-case-table)))
1206 ;; (setq list (cdr list))))))
1207 ;; ;; Display table and coding system for terminal.
1208 ;; (let ((coding (get-language-info language-name 'unibyte-display)))
1209 ;; (if coding
1210 ;; (standard-display-european-internal)
1211 ;; (standard-display-default (if (eq window-system 'pc) 128 160) 255)
1212 ;; (aset standard-display-table 146 nil))
1213 ;; (or (eq window-system 'pc)
1214 ;; (set-terminal-coding-system coding))))
1215
1216 (let ((required-features (get-language-info language-name 'features)))
1217 (while required-features
1218 (require (car required-features))
1219 (setq required-features (cdr required-features))))
1220 (let ((func (get-language-info language-name 'setup-function)))
1221 (if (fboundp func)
1222 (funcall func)))
1223 (run-hooks 'set-language-environment-hook)
1224 (force-mode-line-update t)) 588 (force-mode-line-update t))
1225
1226 ;; (defun standard-display-european-internal ()
1227 ;; ;; Actually set up direct output of non-ASCII characters.
1228 ;; (standard-display-8bit (if (eq window-system 'pc) 128 160) 255)
1229 ;; ;; Unibyte Emacs on MS-DOS wants to display all 8-bit characters with
1230 ;; ;; the native font, and codes 160 and 146 stand for something very
1231 ;; ;; different there.
1232 ;; (or (and (eq window-system 'pc) (not default-enable-multibyte-characters))
1233 ;; (progn
1234 ;; ;; Make non-line-break space display as a plain space.
1235 ;; ;; Most X fonts do the wrong thing for code 160.
1236 ;; (aset standard-display-table 160 [32])
1237 ;; ;; Most Windows programs send out apostrophe's as \222. Most X fonts
1238 ;; ;; don't contain a character at that position. Map it to the ASCII
1239 ;; ;; apostrophe.
1240 ;; (aset standard-display-table 146 [39]))))
1241
1242 (defun set-language-environment-coding-systems (language-name
1243 &optional eol-type)
1244 "Do various coding system setups for language environment LANGUAGE-NAME.
1245
1246 The optional arg EOL-TYPE specifies the eol-type of the default value
1247 of buffer-file-coding-system set by this function."
1248 (let* ((priority (get-language-info language-name 'coding-priority))
1249 (default-coding (car priority)))
1250 (if priority
1251 (let ((categories (mapcar 'coding-system-category priority))
1252 category checked-categories)
1253 (set-default-coding-systems
1254 (if (memq eol-type '(lf crlf cr unix dos mac))
1255 (coding-system-change-eol-conversion default-coding eol-type)
1256 default-coding))
1257 ;; (setq default-sendmail-coding-system default-coding)
1258 (while priority
1259 (unless (memq (setq category (car categories)) checked-categories)
1260 (set-coding-category-system category (car priority))
1261 (setq checked-categories (cons category checked-categories)))
1262 (setq priority (cdr priority)
1263 categories (cdr categories)))
1264 (set-coding-priority-list (nreverse checked-categories))
1265 ;; (update-coding-systems-internal)
1266 ))))
1267 589
1268 ;; Print all arguments with `princ', then print "\n". 590 ;; Print all arguments with `princ', then print "\n".
1269 (defsubst princ-list (&rest args) 591 (defsubst princ-list (&rest args)
1270 (while args (princ (car args)) (setq args (cdr args))) 592 (while args (princ (car args)) (setq args (cdr args)))
1271 (princ "\n")) 593 (princ "\n"))
1272
1273 (put 'describe-specified-language-support 'apropos-inhibit t)
1274 594
1275 ;; Print a language specific information such as input methods, 595 ;; Print a language specific information such as input methods,
1276 ;; charsets, and coding systems. This function is intended to be 596 ;; charsets, and coding systems. This function is intended to be
1277 ;; called from the menu: 597 ;; called from the menu:
1278 ;; [menu-bar mule describe-language-environment LANGUAGE] 598 ;; [menu-bar mule describe-language-environment LANGUAGE]
1289 (defun describe-language-environment (language-name) 609 (defun describe-language-environment (language-name)
1290 "Describe how Emacs supports language environment LANGUAGE-NAME." 610 "Describe how Emacs supports language environment LANGUAGE-NAME."
1291 (interactive 611 (interactive
1292 (list (read-language-name 612 (list (read-language-name
1293 'documentation 613 'documentation
1294 "Describe language environment (default, current choice): "))) 614 "Describe language environment (default, current choise): ")))
1295 (if (null language-name) 615 (if (null language-name)
1296 (setq language-name current-language-environment)) 616 (setq language-name current-language-environment))
1297 (if (or (null language-name) 617 (if (or (null language-name)
1298 (null (get-language-info language-name 'documentation))) 618 (null (get-language-info language-name 'documentation)))
1299 (error "No documentation for the specified language")) 619 (error "No documentation for the specified language"))
1300 (if (symbolp language-name) 620 (if (symbolp language-name)
1301 (setq language-name (symbol-name language-name))) 621 (setq language-name (symbol-name language-name)))
1302 (let ((doc (get-language-info language-name 'documentation))) 622 (let ((doc (get-language-info language-name 'documentation)))
1303 (with-output-to-temp-buffer "*Help*" 623 (with-output-to-temp-buffer "*Help*"
1304 (princ-list language-name " language environment" "\n")
1305 (if (stringp doc) 624 (if (stringp doc)
1306 (progn 625 (progn
1307 (princ-list doc) 626 (princ-list doc)
1308 (terpri))) 627 (terpri)))
1309 (let ((str (get-language-info language-name 'sample-text))) 628 (let ((str (get-language-info language-name 'sample-text)))
1310 (if (stringp str) 629 (if (stringp str)
1311 (progn 630 (progn
1312 (princ "Sample text:\n") 631 (princ "Sample text:\n")
1313 (princ-list " " str) 632 (princ-list " " str)
1314 (terpri)))) 633 (terpri))))
1315 (let ((input-method (get-language-info language-name 'input-method)) 634 (princ "Input methods:\n")
1316 (l (copy-sequence input-method-alist))) 635 (let ((l input-method-alist))
1317 (princ "Input methods") 636 (while l
1318 (when input-method
1319 (princ (format " (default, %s)" input-method))
1320 (setq input-method (assoc input-method input-method-alist))
1321 (setq l (cons input-method (delete input-method l))))
1322 (princ ":\n")
1323 (while l
1324 (if (string= language-name (nth 1 (car l))) 637 (if (string= language-name (nth 1 (car l)))
1325 (princ-list " " (car (car l)) 638 (princ-list " " (car (car l))
1326 (format " (`%s' in mode line)" (nth 3 (car l))))) 639 (format " (`%s' in mode line)" (nth 3 (car l)))))
1327 (setq l (cdr l)))) 640 (setq l (cdr l))))
1328 (terpri) 641 (terpri)
1341 (princ-list " nothing specific to " language-name) 654 (princ-list " nothing specific to " language-name)
1342 (while l 655 (while l
1343 (princ ; (format " %s (`%c' in mode line):\n\t%s\n" 656 (princ ; (format " %s (`%c' in mode line):\n\t%s\n"
1344 ;; In XEmacs, `coding-system-mnemonic' returns string. 657 ;; In XEmacs, `coding-system-mnemonic' returns string.
1345 (format " %s (`%s' in mode line):\n\t%s\n" 658 (format " %s (`%s' in mode line):\n\t%s\n"
1346 (car l) 659 (car l)
1347 (coding-system-mnemonic (car l)) 660 (coding-system-mnemonic (car l))
1348 (coding-system-doc-string (car l)))) 661 (coding-system-doc-string (car l))))
1349 ;; (let ((aliases (coding-system-get (car l) 'alias-coding-systems)))
1350 ;; (when aliases
1351 ;; (princ "\t")
1352 ;; (princ (cons 'alias: (cdr aliases)))
1353 ;; (terpri)))
1354 (setq l (cdr l)))))))) 662 (setq l (cdr l))))))))
1355 663
1356 ;;; Charset property 664 ;;; Charset property
1357 665
1358 ;; (defsubst get-charset-property (charset propname) 666 ;; (defsubst get-charset-property (charset propname)
1368 ;; (plist-put (charset-plist charset) propname value))) 676 ;; (plist-put (charset-plist charset) propname value)))
1369 677
1370 (defvar char-code-property-table 678 (defvar char-code-property-table
1371 (make-char-table 'generic) 679 (make-char-table 'generic)
1372 "Char-table containing a property list of each character code. 680 "Char-table containing a property list of each character code.
1373 681 ;;
1374 See also the documentation of `get-char-code-property' and 682 See also the documentation of `get-char-code-property' and
1375 `put-char-code-property'") 683 `put-char-code-property'")
1376 ;; (let ((plist (aref char-code-property-table char))) 684 ;; (let ((plist (aref char-code-property-table char)))
1377 (defun get-char-code-property (char propname) 685 (defun get-char-code-property (char propname)
1378 "Return the value of CHAR's PROPNAME property in `char-code-property-table'." 686 "Return the value of CHAR's PROPNAME property in `char-code-property-table'."
1389 (if slot 697 (if slot
1390 (setcar (cdr slot) value) 698 (setcar (cdr slot) value)
1391 (nconc plist (list propname value)))) 699 (nconc plist (list propname value))))
1392 (put-char-table char (list propname value) char-code-property-table) 700 (put-char-table char (list propname value) char-code-property-table)
1393 ))) 701 )))
1394 702 ;; (setcar (cdr slot) value)
1395 703 ;; (nconc plist (list propname value))))
1396 ;; Pretty description of encoded string 704 ;; (aset char-code-property-table char (list propname value)))))
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
1459 705
1460 ;;; mule-cmds.el ends here 706 ;;; mule-cmds.el ends here