Merge from origin/emacs-24
[emacs.git] / lisp / obsolete / iso-acc.el
blobeaf732ebbd5a598138736c6980bb7115703085a0
1 ;;; iso-acc.el --- minor mode providing electric accent keys
3 ;; Copyright (C) 1993-1994, 1996, 2001-2015 Free Software Foundation,
4 ;; Inc.
6 ;; Author: Johan Vromans
7 ;; Maintainer: emacs-devel@gnu.org
8 ;; Keywords: i18n
9 ;; Obsolete-since: 22.1
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software: you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation, either version 3 of the License, or
16 ;; (at your option) any later version.
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
26 ;;; Commentary:
28 ;; Function `iso-accents-mode' activates a minor mode in which
29 ;; typewriter "dead keys" are emulated. The purpose of this emulation
30 ;; is to provide a simple means for inserting accented characters
31 ;; according to the ISO-8859-1...3 character sets.
33 ;; In `iso-accents-mode', pseudo accent characters are used to
34 ;; introduce accented keys. The pseudo-accent characters are:
36 ;; ' (minute) -> acute accent
37 ;; ` (backtick) -> grave accent
38 ;; " (second) -> diaeresis
39 ;; ^ (caret) -> circumflex
40 ;; ~ (tilde) -> tilde over the character
41 ;; / (slash) -> slash through the character.
42 ;; Also: /A is A-with-ring and /E is AE ligature.
43 ;; These two are enabled only if you set iso-accents-enable
44 ;; to include them:
45 ;; . (period) -> dot over the character (some languages only)
46 ;; , (cedilla) -> cedilla under the character (some languages only)
48 ;; The action taken depends on the key that follows the pseudo accent.
49 ;; In general:
51 ;; pseudo-accent + appropriate letter -> accented letter
52 ;; pseudo-accent + space -> pseudo-accent (except comma and period)
53 ;; pseudo-accent + pseudo-accent -> accent (if available)
54 ;; pseudo-accent + other -> pseudo-accent + other
56 ;; If the pseudo-accent is followed by anything else than a
57 ;; self-insert-command, the dead-key code is terminated, the
58 ;; pseudo-accent inserted 'as is' and the bell is rung to signal this.
60 ;; Function `iso-accents-mode' can be used to enable the iso accents
61 ;; minor mode, or disable it.
63 ;; If you want only some of these characters to serve as accents,
64 ;; add a language to `iso-languages' which specifies the accent characters
65 ;; that you want, then select the language with `iso-accents-customize'.
67 ;;; Code:
69 (provide 'iso-acc)
71 (defgroup iso-acc nil
72 "Minor mode providing electric accent keys."
73 :prefix "iso-accents-"
74 :group 'i18n)
76 (defcustom iso-accents-insert-offset nonascii-insert-offset
77 "Offset added by ISO Accents mode to character codes 0200 and above."
78 :type 'integer
79 :group 'iso-acc)
81 (defvar iso-languages
82 '(("catalan"
83 ;; Note this includes some extra characters used in Spanish,
84 ;; on the idea that someone who uses Catalan is likely to use Spanish
85 ;; as well.
86 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
87 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
88 (?\ . ?'))
89 (?` (?A . ?\300) (?E . ?\310) (?O . ?\322)
90 (?a . ?\340) (?e . ?\350) (?o . ?\362)
91 (?\ . ?`))
92 (?\" (?I . ?\317) (?U . ?\334) (?i . ?\357) (?u . ?\374)
93 (?\ . ?\"))
94 (?~ (?C . ?\307) (?N . ?\321) (?c . ?\347) (?n . ?\361)
95 (?> . ?\273) (?< . ?\253) (?! . ?\241) (?? . ?\277)
96 (?\ . ?\~)))
98 ("esperanto"
99 (?^ (?H . ?\246) (?J . ?\254) (?h . ?\266) (?j . ?\274) (?C . ?\306)
100 (?G . ?\330) (?S . ?\336) (?c . ?\346) (?g . ?\370) (?s . ?\376)
101 (?^ . ?^) (?\ . ?^))
102 (?~ (?U . ?\335) (?u . ?\375) (?\ . ?~)))
104 ("french"
105 (?' (?E . ?\311) (?C . ?\307) (?e . ?\351) (?c . ?\347)
106 (?\ . ?'))
107 (?` (?A . ?\300) (?E . ?\310) (?U . ?\331)
108 (?a . ?\340) (?e . ?\350) (?u . ?\371)
109 (?\ . ?`))
110 (?^ (?A . ?\302) (?E . ?\312) (?I . ?\316) (?O . ?\324) (?U . ?\333)
111 (?a . ?\342) (?e . ?\352) (?i . ?\356) (?o . ?\364) (?u . ?\373)
112 (?\ . ?^))
113 (?\" (?E . ?\313) (?I . ?\317)
114 (?e . ?\353) (?i . ?\357)
115 (?\ . ?\"))
116 (?~ (?< . ?\253) (?> . ?\273) (?C . ?\307) (?c . ?\347)
117 (?\ . ?~))
118 (?, (?C . ?\307) (?c . ?\347) (?\ . ?\,)))
120 ("german"
121 (?\" (?A . ?\304) (?O . ?\326) (?U . ?\334)
122 (?a . ?\344) (?o . ?\366) (?u . ?\374) (?s . ?\337) (?\ . ?\")))
124 ("irish"
125 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
126 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
127 (?\ . ?')))
129 ("portuguese"
130 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
131 (?C . ?\307) (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363)
132 (?u . ?\372) (?c . ?\347)
133 (?\ . ?'))
134 (?` (?A . ?\300) (?a . ?\340)
135 (?\ . ?`))
136 (?^ (?A . ?\302) (?E . ?\312) (?O . ?\324)
137 (?a . ?\342) (?e . ?\352) (?o . ?\364)
138 (?\ . ?^))
139 (?\" (?U . ?\334) (?u . ?\374)
140 (?\ . ?\"))
141 (?~ (?A . ?\303) (?O . ?\325) (?a . ?\343) (?o . ?\365)
142 (?C . ?\307) (?N . ?\321) (?c . ?\347) (?n . ?\361)
143 (?\ . ?~))
144 (?, (?c . ?\347) (?C . ?\307) (?, . ?,)))
146 ("spanish"
147 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
148 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
149 (?\ . ?'))
150 (?\" (?U . ?\334) (?u . ?\374) (?\ . ?\"))
151 (?\~ (?N . ?\321) (?n . ?\361) (?> . ?\273) (?< . ?\253) (?! . ?\241)
152 (?? . ?\277) (?\ . ?\~)))
154 ("latin-1"
155 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
156 (?Y . ?\335) (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363)
157 (?u . ?\372) (?y . ?\375) (?' . ?\264)
158 (?\ . ?'))
159 (?` (?A . ?\300) (?E . ?\310) (?I . ?\314) (?O . ?\322) (?U . ?\331)
160 (?a . ?\340) (?e . ?\350) (?i . ?\354) (?o . ?\362) (?u . ?\371)
161 (?` . ?`) (?\ . ?`))
162 (?^ (?A . ?\302) (?E . ?\312) (?I . ?\316) (?O . ?\324) (?U . ?\333)
163 (?a . ?\342) (?e . ?\352) (?i . ?\356) (?o . ?\364) (?u . ?\373)
164 (?^ . ?^) (?\ . ?^))
165 (?\" (?A . ?\304) (?E . ?\313) (?I . ?\317) (?O . ?\326) (?U . ?\334)
166 (?a . ?\344) (?e . ?\353) (?i . ?\357) (?o . ?\366) (?s . ?\337)
167 (?u . ?\374) (?y . ?\377)
168 (?\" . ?\250) (?\ . ?\"))
169 (?~ (?A . ?\303) (?C . ?\307) (?D . ?\320) (?N . ?\321) (?O . ?\325)
170 (?T . ?\336) (?a . ?\343) (?c . ?\347) (?d . ?\360) (?n . ?\361)
171 (?o . ?\365) (?t . ?\376)
172 (?> . ?\273) (?< . ?\253) (?! . ?\241) (?? . ?\277)
173 (?\~ . ?\270) (?\ . ?~))
174 (?/ (?A . ?\305) (?E . ?\306) (?O . ?\330) (?a . ?\345) (?e . ?\346)
175 (?o . ?\370)
176 (?/ . ?\260) (?\ . ?/)))
178 ("latin-2" latin-iso8859-2
179 (?' (?A . ?\301) (?C . ?\306) (?D . ?\320) (?E . ?\311) (?I . ?\315)
180 (?L . ?\305) (?N . ?\321) (?O . ?\323) (?R . ?\300) (?S . ?\246)
181 (?U . ?\332) (?Y . ?\335) (?Z . ?\254)
182 (?a . ?\341) (?c . ?\346) (?d . ?\360) (?e . ?\351) (?i . ?\355)
183 (?l . ?\345) (?n . ?\361) (?o . ?\363) (?r . ?\340) (?s . ?\266)
184 (?u . ?\372) (?y . ?\375) (?z . ?\274)
185 (?' . ?\264) (?\ . ?'))
186 (?` (?A . ?\241) (?C . ?\307) (?E . ?\312) (?L . ?\243) (?S . ?\252)
187 (?T . ?\336) (?Z . ?\257)
188 (?a . ?\261) (?l . ?\263) (?c . ?\347) (?e . ?\352) (?s . ?\272)
189 (?t . ?\376) (?z . ?\277)
190 (?` . ?\252)
191 (?. . ?\377) (?\ . ?`))
192 (?^ (?A . ?\302) (?I . ?\316) (?O . ?\324)
193 (?a . ?\342) (?i . ?\356) (?o . ?\364)
194 (?^ . ?^) ; no special code?
195 (?\ . ?^))
196 (?\" (?A . ?\304) (?E . ?\313) (?O . ?\326) (?U . ?\334)
197 (?a . ?\344) (?e . ?\353) (?o . ?\366) (?s . ?\337) (?u . ?\374)
198 (?\" . ?\250)
199 (?\ . ?\"))
200 (?~ (?A . ?\303) (?C . ?\310) (?D . ?\317) (?L . ?\245) (?N . ?\322)
201 (?O . ?\325) (?R . ?\330) (?S . ?\251) (?T . ?\253) (?U . ?\333)
202 (?Z . ?\256)
203 (?a . ?\343) (?c . ?\350) (?d . ?\357) (?l . ?\265) (?n . ?\362)
204 (?o . ?\365) (?r . ?\370) (?s . ?\271) (?t . ?\273) (?u . ?\373)
205 (?z . ?\276)
206 (?v . ?\242) ; v accent
207 (?\~ . ?\242) ; v accent
208 (?\. . ?\270) ; cedilla accent
209 (?\ . ?~)))
211 ("latin-3" latin-iso8859-3
212 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
213 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
214 (?' . ?\264) (?\ . ?'))
215 (?` (?A . ?\300) (?E . ?\310) (?I . ?\314) (?O . ?\322) (?U . ?\331)
216 (?a . ?\340) (?e . ?\350) (?i . ?\354) (?o . ?\362) (?u . ?\371)
217 (?` . ?`) (?\ . ?`))
218 (?^ (?A . ?\302) (?C . ?\306) (?E . ?\312) (?G . ?\330) (?H . ?\246)
219 (?I . ?\316) (?J . ?\254) (?O . ?\324) (?S . ?\336) (?U . ?\333)
220 (?a . ?\342) (?c . ?\346) (?e . ?\352) (?g . ?\370) (?h . ?\266)
221 (?i . ?\356) (?j . ?\274) (?o . ?\364) (?s . ?\376) (?u . ?\373)
222 (?^ . ?^) (?\ . ?^))
223 (?\" (?A . ?\304) (?E . ?\313) (?I . ?\317) (?O . ?\326) (?U . ?\334)
224 (?a . ?\344) (?e . ?\353) (?i . ?\357) (?o . ?\366) (?u . ?\374)
225 (?s . ?\337)
226 (?\" . ?\250) (?\ . ?\"))
227 (?~ (?A . ?\303) (?C . ?\307) (?D . ?\320) (?N . ?\321) (?O . ?\325)
228 (?a . ?\343) (?c . ?\347) (?d . ?\360) (?n . ?\361) (?o . ?\365)
229 (?$ . ?\245) (?S . ?\252) (?s . ?\272) (?G . ?\253) (?g . ?\273)
230 (?U . ?\335) (?u . ?\375) (?` . ?\242)
231 (?~ . ?\270) (?\ . ?~))
232 (?/ (?C . ?\305) (?G . ?\325) (?H . ?\241) (?I . ?\251) (?Z . ?\257)
233 (?c . ?\345) (?g . ?\365) (?h . ?\261) (?i . ?\271) (?z . ?\277)
234 (?r . ?\256)
235 (?. . ?\377) (?# . ?\243) (?$ . ?\244)
236 (?/ . ?\260) (?\ . ?/))
237 (?. (?C . ?\305) (?G . ?\325) (?I . ?\251) (?Z . ?\257)
238 (?c . ?\345) (?g . ?\365) (?z . ?\277))))
239 "List of language-specific customizations for the ISO Accents mode.
241 Each element of the list is of the form
243 (LANGUAGE [CHARSET]
244 (PSEUDO-ACCENT MAPPINGS)
245 (PSEUDO-ACCENT MAPPINGS)
246 ...)
248 LANGUAGE is a string naming the language.
249 CHARSET (which may be omitted) is the symbol name
250 of the character set used in this language.
251 If CHARSET is omitted, latin-iso8859-1 is the default.
252 PSEUDO-ACCENT is a char specifying an accent key.
253 MAPPINGS are cons cells of the form (CHAR . ISO-CHAR).
255 The net effect is that the key sequence PSEUDO-ACCENT CHAR is mapped
256 to ISO-CHAR on input.")
258 (defvar iso-language nil
259 "Language for which ISO Accents mode is currently customized.
260 Change it with the `iso-accents-customize' function.")
262 (defvar iso-accents-list nil
263 "Association list for ISO accent combinations, for the chosen language.")
265 (defcustom iso-accents-mode nil
266 "Non-nil enables ISO Accents mode.
267 Setting this variable makes it local to the current buffer.
268 See the function `iso-accents-mode'."
269 :type 'boolean
270 :group 'iso-acc)
271 (make-variable-buffer-local 'iso-accents-mode)
273 (defcustom iso-accents-enable '(?' ?` ?^ ?\" ?~ ?/)
274 "List of accent keys that become prefixes in ISO Accents mode.
275 The default is (?' ?` ?^ ?\" ?~ ?/), which contains all the supported
276 accent keys. If you set this variable to a list in which some of those
277 characters are missing, the missing ones do not act as accents.
279 Note that if you specify a language with `iso-accents-customize',
280 that can also turn off certain prefixes (whichever ones are not needed in
281 the language you choose)."
282 :type '(repeat character)
283 :group 'iso-acc)
285 (defun iso-accents-accent-key (prompt)
286 "Modify the following character by adding an accent to it."
287 ;; Pick up the accent character.
288 (if (and iso-accents-mode
289 (memq last-input-event iso-accents-enable))
290 (iso-accents-compose prompt)
291 (vector last-input-event)))
294 ;; The iso-accents-compose function is called deep inside Emacs' read
295 ;; key sequence machinery, so the call to read-event below actually
296 ;; recurses into that machinery. Doing that does not cause any
297 ;; problem on its own, but read-event will have marked the window's
298 ;; display matrix to be accurate -- which is broken by the subsequent
299 ;; call to delete-region. Therefore, we must call force-window-update
300 ;; after delete-region to explicitly clear the accurate state of the
301 ;; window's display matrix.
303 (defun iso-accents-compose (prompt)
304 (let* ((first-char last-input-event)
305 (list (assq first-char iso-accents-list))
306 ;; Wait for the second key and look up the combination.
307 (second-char (if (or prompt
308 (not (eq (key-binding "a")
309 'self-insert-command))
310 ;; Not at start of a key sequence.
311 (> (length (this-single-command-keys)) 1)
312 ;; Called from anything but the command loop.
313 this-command)
314 (progn
315 (message "%s%c"
316 (or prompt "Compose with ")
317 first-char)
318 (read-event))
319 (insert first-char)
320 (prog1 (read-event)
321 (delete-region (1- (point)) (point))
322 ;; Display is no longer up-to-date.
323 (force-window-update (selected-window)))))
324 (entry (cdr (assq second-char list))))
325 (if entry
326 ;; Found it: return the mapped char
327 (vector
328 (if (and enable-multibyte-characters
329 (>= entry ?\200))
330 (+ iso-accents-insert-offset entry)
331 entry))
332 ;; Otherwise, advance and schedule the second key for execution.
333 (push second-char unread-command-events)
334 (vector first-char))))
336 ;; It is a matter of taste if you want the minor mode indicated
337 ;; in the mode line...
338 ;; If so, uncomment the next four lines.
339 ;; (or (assq 'iso-accents-mode minor-mode-alist)
340 ;; (setq minor-mode-alist
341 ;; (append minor-mode-alist
342 ;; '((iso-accents-mode " ISO-Acc")))))
344 ;;;###autoload
345 (defun iso-accents-mode (&optional arg)
346 "Toggle ISO Accents mode, in which accents modify the following letter.
347 This permits easy insertion of accented characters according to ISO-8859-1.
348 When Iso-accents mode is enabled, accent character keys
349 \(`, ', \", ^, / and ~) do not self-insert; instead, they modify the following
350 letter key so that it inserts an ISO accented letter.
352 You can customize ISO Accents mode to a particular language
353 with the command `iso-accents-customize'.
355 Special combinations: ~c gives a c with cedilla,
356 ~d gives an Icelandic eth (d with dash).
357 ~t gives an Icelandic thorn.
358 \"s gives German sharp s.
359 /a gives a with ring.
360 /e gives an a-e ligature.
361 ~< and ~> give guillemots.
362 ~! gives an inverted exclamation mark.
363 ~? gives an inverted question mark.
365 With an argument, a positive argument enables ISO Accents mode,
366 and a negative argument disables it."
368 (interactive "P")
370 (if (if arg
371 ;; Negative arg means switch it off.
372 (<= (prefix-numeric-value arg) 0)
373 ;; No arg means toggle.
374 iso-accents-mode)
375 (setq iso-accents-mode nil)
377 ;; Enable electric accents.
378 (setq iso-accents-mode t)))
380 (defun iso-accents-customize (language)
381 "Customize the ISO accents machinery for a particular language.
382 It selects the customization based on the specifications in the
383 `iso-languages' variable."
384 (interactive (list (completing-read "Language: " iso-languages nil t)))
385 (let ((table (cdr (assoc language iso-languages)))
386 all-accents tail)
387 (if (not table)
388 (error "Unknown language `%s'" language)
389 (setq iso-accents-insert-offset (- (make-char (if (symbolp (car table))
390 (car table)
391 'latin-iso8859-1))
392 128))
393 (if (symbolp (car table))
394 (setq table (cdr table)))
395 (setq iso-language language
396 iso-accents-list table)
397 (if key-translation-map
398 (substitute-key-definition
399 'iso-accents-accent-key nil key-translation-map)
400 (setq key-translation-map (make-sparse-keymap)))
401 ;; Set up translations for all the characters that are used as
402 ;; accent prefixes in this language.
403 (setq tail iso-accents-list)
404 (while tail
405 (define-key key-translation-map (vector (car (car tail)))
406 'iso-accents-accent-key)
407 (setq tail (cdr tail))))))
409 (defun iso-accentuate (start end)
410 "Convert two-character sequences in region into accented characters.
411 Noninteractively, this operates on text from START to END.
412 This uses the same conversion that ISO Accents mode uses for type-in."
413 (interactive "r")
414 (save-excursion
415 (save-restriction
416 (narrow-to-region start end)
417 (goto-char start)
418 (forward-char 1)
419 (let (entry)
420 (while (< (point) end)
421 (if (and (memq (preceding-char) iso-accents-enable)
422 (setq entry (cdr (assq (following-char) (assq (preceding-char) iso-accents-list)))))
423 (progn
424 (forward-char -1)
425 (delete-char 2)
426 (insert entry)
427 (setq end (1- end)))
428 (forward-char 1)))))))
430 (defun iso-accent-rassoc-unit (value alist)
431 (let (elt acc)
432 (while (and alist (not elt))
433 (setq acc (car (car alist))
434 elt (car (rassq value (cdr (car alist))))
435 alist (cdr alist)))
436 (if elt
437 (cons acc elt))))
439 (defun iso-unaccentuate (start end)
440 "Convert accented characters in the region into two-character sequences.
441 Noninteractively, this operates on text from START to END.
442 This uses the opposite of the conversion done by ISO Accents mode for type-in."
443 (interactive "r")
444 (save-excursion
445 (save-restriction
446 (narrow-to-region start end)
447 (goto-char start)
448 (let (entry)
449 (while (< (point) end)
450 (if (and (> (following-char) 127)
451 (setq entry (iso-accent-rassoc-unit (following-char)
452 iso-accents-list)))
453 (progn
454 (delete-char 1)
455 (insert (car entry) (cdr entry))
456 (setq end (1+ end)))
457 (forward-char 1)))))))
459 (defun iso-deaccentuate (start end)
460 "Convert accented characters in the region into unaccented characters.
461 Noninteractively, this operates on text from START to END."
462 (interactive "r")
463 (save-excursion
464 (save-restriction
465 (narrow-to-region start end)
466 (goto-char start)
467 (let (entry)
468 (while (< (point) end)
469 (if (and (> (following-char) 127)
470 (setq entry (iso-accent-rassoc-unit (following-char)
471 iso-accents-list)))
472 (progn
473 (delete-char 1)
474 (insert (cdr entry)))
475 (forward-char 1)))))))
477 ;; Set up the default settings.
478 (iso-accents-customize "latin-1")
480 ;; Use Iso-Accents mode in the minibuffer
481 ;; if it was in use in the previous buffer.
482 (defun iso-acc-minibuf-setup ()
483 (setq iso-accents-mode
484 (with-current-buffer (window-buffer minibuffer-scroll-window)
485 iso-accents-mode)))
487 (add-hook 'minibuffer-setup-hook 'iso-acc-minibuf-setup)
489 ;;; iso-acc.el ends here