1 ;;; iso-acc.el --- minor mode providing electric accent keys
3 ;; Copyright (C) 1993, 1994, 1996, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
6 ;; Author: Johan Vromans
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software: you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation, either version 3 of the License, or
15 ;; (at your option) any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
27 ;; This file has been obsolete since Emacs 22.1.
29 ;; Function `iso-accents-mode' activates a minor mode in which
30 ;; typewriter "dead keys" are emulated. The purpose of this emulation
31 ;; is to provide a simple means for inserting accented characters
32 ;; according to the ISO-8859-1...3 character sets.
34 ;; In `iso-accents-mode', pseudo accent characters are used to
35 ;; introduce accented keys. The pseudo-accent characters are:
37 ;; ' (minute) -> actue accent
38 ;; ` (backtick) -> grave accent
39 ;; " (second) -> diaeresis
40 ;; ^ (caret) -> circumflex
41 ;; ~ (tilde) -> tilde over the character
42 ;; / (slash) -> slash through the character.
43 ;; Also: /A is A-with-ring and /E is AE ligature.
44 ;; These two are enabled only if you set iso-accents-enable
46 ;; . (period) -> dot over the character (some languages only)
47 ;; , (cedilla) -> cedilla under the character (some languages only)
49 ;; The action taken depends on the key that follows the pseudo accent.
52 ;; pseudo-accent + appropriate letter -> accented letter
53 ;; pseudo-accent + space -> pseudo-accent (except comma and period)
54 ;; pseudo-accent + pseudo-accent -> accent (if available)
55 ;; pseudo-accent + other -> pseudo-accent + other
57 ;; If the pseudo-accent is followed by anything else than a
58 ;; self-insert-command, the dead-key code is terminated, the
59 ;; pseudo-accent inserted 'as is' and the bell is rung to signal this.
61 ;; Function `iso-accents-mode' can be used to enable the iso accents
62 ;; minor mode, or disable it.
64 ;; If you want only some of these characters to serve as accents,
65 ;; add a language to `iso-languages' which specifies the accent characters
66 ;; that you want, then select the language with `iso-accents-customize'.
73 "Minor mode providing electric accent keys."
74 :prefix "iso-accents-"
77 (defcustom iso-accents-insert-offset nonascii-insert-offset
78 "*Offset added by ISO Accents mode to character codes 0200 and above."
84 ;; Note this includes some extra characters used in Spanish,
85 ;; on the idea that someone who uses Catalan is likely to use Spanish
87 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
88 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
90 (?` (?A . ?\300) (?E . ?\310) (?O . ?\322)
91 (?a . ?\340) (?e . ?\350) (?o . ?\362)
93 (?\" (?I . ?\317) (?U . ?\334) (?i . ?\357) (?u . ?\374)
95 (?~ (?C . ?\307) (?N . ?\321) (?c . ?\347) (?n . ?\361)
96 (?> . ?\273) (?< . ?\253) (?! . ?\241) (?? . ?\277)
100 (?^ (?H . ?\246) (?J . ?\254) (?h . ?\266) (?j . ?\274) (?C . ?\306)
101 (?G . ?\330) (?S . ?\336) (?c . ?\346) (?g . ?\370) (?s . ?\376)
103 (?~ (?U . ?\335) (?u . ?\375) (?\ . ?~)))
106 (?' (?E . ?\311) (?C . ?\307) (?e . ?\351) (?c . ?\347)
108 (?` (?A . ?\300) (?E . ?\310) (?U . ?\331)
109 (?a . ?\340) (?e . ?\350) (?u . ?\371)
111 (?^ (?A . ?\302) (?E . ?\312) (?I . ?\316) (?O . ?\324) (?U . ?\333)
112 (?a . ?\342) (?e . ?\352) (?i . ?\356) (?o . ?\364) (?u . ?\373)
114 (?\" (?E . ?\313) (?I . ?\317)
115 (?e . ?\353) (?i . ?\357)
117 (?~ (?< . ?\253) (?> . ?\273) (?C . ?\307) (?c . ?\347)
119 (?, (?C . ?\307) (?c . ?\347) (?\ . ?\,)))
122 (?\" (?A . ?\304) (?O . ?\326) (?U . ?\334)
123 (?a . ?\344) (?o . ?\366) (?u . ?\374) (?s . ?\337) (?\ . ?\")))
126 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
127 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
131 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
132 (?C . ?\307) (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363)
133 (?u . ?\372) (?c . ?\347)
135 (?` (?A . ?\300) (?a . ?\340)
137 (?^ (?A . ?\302) (?E . ?\312) (?O . ?\324)
138 (?a . ?\342) (?e . ?\352) (?o . ?\364)
140 (?\" (?U . ?\334) (?u . ?\374)
142 (?~ (?A . ?\303) (?O . ?\325) (?a . ?\343) (?o . ?\365)
143 (?C . ?\307) (?N . ?\321) (?c . ?\347) (?n . ?\361)
145 (?, (?c . ?\347) (?C . ?\307) (?, . ?,)))
148 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
149 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
151 (?\" (?U . ?\334) (?u . ?\374) (?\ . ?\"))
152 (?\~ (?N . ?\321) (?n . ?\361) (?> . ?\273) (?< . ?\253) (?! . ?\241)
153 (?? . ?\277) (?\ . ?\~)))
156 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
157 (?Y . ?\335) (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363)
158 (?u . ?\372) (?y . ?\375) (?' . ?\264)
160 (?` (?A . ?\300) (?E . ?\310) (?I . ?\314) (?O . ?\322) (?U . ?\331)
161 (?a . ?\340) (?e . ?\350) (?i . ?\354) (?o . ?\362) (?u . ?\371)
163 (?^ (?A . ?\302) (?E . ?\312) (?I . ?\316) (?O . ?\324) (?U . ?\333)
164 (?a . ?\342) (?e . ?\352) (?i . ?\356) (?o . ?\364) (?u . ?\373)
166 (?\" (?A . ?\304) (?E . ?\313) (?I . ?\317) (?O . ?\326) (?U . ?\334)
167 (?a . ?\344) (?e . ?\353) (?i . ?\357) (?o . ?\366) (?s . ?\337)
168 (?u . ?\374) (?y . ?\377)
169 (?\" . ?\250) (?\ . ?\"))
170 (?~ (?A . ?\303) (?C . ?\307) (?D . ?\320) (?N . ?\321) (?O . ?\325)
171 (?T . ?\336) (?a . ?\343) (?c . ?\347) (?d . ?\360) (?n . ?\361)
172 (?o . ?\365) (?t . ?\376)
173 (?> . ?\273) (?< . ?\253) (?! . ?\241) (?? . ?\277)
174 (?\~ . ?\270) (?\ . ?~))
175 (?/ (?A . ?\305) (?E . ?\306) (?O . ?\330) (?a . ?\345) (?e . ?\346)
177 (?/ . ?\260) (?\ . ?/)))
179 ("latin-2" latin-iso8859-2
180 (?' (?A . ?\301) (?C . ?\306) (?D . ?\320) (?E . ?\311) (?I . ?\315)
181 (?L . ?\305) (?N . ?\321) (?O . ?\323) (?R . ?\300) (?S . ?\246)
182 (?U . ?\332) (?Y . ?\335) (?Z . ?\254)
183 (?a . ?\341) (?c . ?\346) (?d . ?\360) (?e . ?\351) (?i . ?\355)
184 (?l . ?\345) (?n . ?\361) (?o . ?\363) (?r . ?\340) (?s . ?\266)
185 (?u . ?\372) (?y . ?\375) (?z . ?\274)
186 (?' . ?\264) (?\ . ?'))
187 (?` (?A . ?\241) (?C . ?\307) (?E . ?\312) (?L . ?\243) (?S . ?\252)
188 (?T . ?\336) (?Z . ?\257)
189 (?a . ?\261) (?l . ?\263) (?c . ?\347) (?e . ?\352) (?s . ?\272)
190 (?t . ?\376) (?z . ?\277)
192 (?. . ?\377) (?\ . ?`))
193 (?^ (?A . ?\302) (?I . ?\316) (?O . ?\324)
194 (?a . ?\342) (?i . ?\356) (?o . ?\364)
195 (?^ . ?^) ; no special code?
197 (?\" (?A . ?\304) (?E . ?\313) (?O . ?\326) (?U . ?\334)
198 (?a . ?\344) (?e . ?\353) (?o . ?\366) (?s . ?\337) (?u . ?\374)
201 (?~ (?A . ?\303) (?C . ?\310) (?D . ?\317) (?L . ?\245) (?N . ?\322)
202 (?O . ?\325) (?R . ?\330) (?S . ?\251) (?T . ?\253) (?U . ?\333)
204 (?a . ?\343) (?c . ?\350) (?d . ?\357) (?l . ?\265) (?n . ?\362)
205 (?o . ?\365) (?r . ?\370) (?s . ?\271) (?t . ?\273) (?u . ?\373)
207 (?v . ?\242) ; v accent
208 (?\~ . ?\242) ; v accent
209 (?\. . ?\270) ; cedilla accent
212 ("latin-3" latin-iso8859-3
213 (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332)
214 (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372)
215 (?' . ?\264) (?\ . ?'))
216 (?` (?A . ?\300) (?E . ?\310) (?I . ?\314) (?O . ?\322) (?U . ?\331)
217 (?a . ?\340) (?e . ?\350) (?i . ?\354) (?o . ?\362) (?u . ?\371)
219 (?^ (?A . ?\302) (?C . ?\306) (?E . ?\312) (?G . ?\330) (?H . ?\246)
220 (?I . ?\316) (?J . ?\254) (?O . ?\324) (?S . ?\336) (?U . ?\333)
221 (?a . ?\342) (?c . ?\346) (?e . ?\352) (?g . ?\370) (?h . ?\266)
222 (?i . ?\356) (?j . ?\274) (?o . ?\364) (?s . ?\376) (?u . ?\373)
224 (?\" (?A . ?\304) (?E . ?\313) (?I . ?\317) (?O . ?\326) (?U . ?\334)
225 (?a . ?\344) (?e . ?\353) (?i . ?\357) (?o . ?\366) (?u . ?\374)
227 (?\" . ?\250) (?\ . ?\"))
228 (?~ (?A . ?\303) (?C . ?\307) (?D . ?\320) (?N . ?\321) (?O . ?\325)
229 (?a . ?\343) (?c . ?\347) (?d . ?\360) (?n . ?\361) (?o . ?\365)
230 (?$ . ?\245) (?S . ?\252) (?s . ?\272) (?G . ?\253) (?g . ?\273)
231 (?U . ?\335) (?u . ?\375) (?` . ?\242)
232 (?~ . ?\270) (?\ . ?~))
233 (?/ (?C . ?\305) (?G . ?\325) (?H . ?\241) (?I . ?\251) (?Z . ?\257)
234 (?c . ?\345) (?g . ?\365) (?h . ?\261) (?i . ?\271) (?z . ?\277)
236 (?. . ?\377) (?# . ?\243) (?$ . ?\244)
237 (?/ . ?\260) (?\ . ?/))
238 (?. (?C . ?\305) (?G . ?\325) (?I . ?\251) (?Z . ?\257)
239 (?c . ?\345) (?g . ?\365) (?z . ?\277))))
240 "List of language-specific customizations for the ISO Accents mode.
242 Each element of the list is of the form
245 (PSEUDO-ACCENT MAPPINGS)
246 (PSEUDO-ACCENT MAPPINGS)
249 LANGUAGE is a string naming the language.
250 CHARSET (which may be omitted) is the symbol name
251 of the character set used in this language.
252 If CHARSET is omitted, latin-iso8859-1 is the default.
253 PSEUDO-ACCENT is a char specifying an accent key.
254 MAPPINGS are cons cells of the form (CHAR . ISO-CHAR).
256 The net effect is that the key sequence PSEUDO-ACCENT CHAR is mapped
257 to ISO-CHAR on input.")
259 (defvar iso-language nil
260 "Language for which ISO Accents mode is currently customized.
261 Change it with the `iso-accents-customize' function.")
263 (defvar iso-accents-list nil
264 "Association list for ISO accent combinations, for the chosen language.")
266 (defcustom iso-accents-mode nil
267 "*Non-nil enables ISO Accents mode.
268 Setting this variable makes it local to the current buffer.
269 See the function `iso-accents-mode'."
272 (make-variable-buffer-local 'iso-accents-mode)
274 (defcustom iso-accents-enable '(?' ?` ?^ ?\" ?~ ?/)
275 "*List of accent keys that become prefixes in ISO Accents mode.
276 The default is (?' ?` ?^ ?\" ?~ ?/), which contains all the supported
277 accent keys. If you set this variable to a list in which some of those
278 characters are missing, the missing ones do not act as accents.
280 Note that if you specify a language with `iso-accents-customize',
281 that can also turn off certain prefixes (whichever ones are not needed in
282 the language you choose)."
283 :type '(repeat character)
286 (defun iso-accents-accent-key (prompt)
287 "Modify the following character by adding an accent to it."
288 ;; Pick up the accent character.
289 (if (and iso-accents-mode
290 (memq last-input-event iso-accents-enable))
291 (iso-accents-compose prompt)
292 (vector last-input-event)))
295 ;; The iso-accents-compose function is called deep inside Emacs' read
296 ;; key sequence machinery, so the call to read-event below actually
297 ;; recurses into that machinery. Doing that does not cause any
298 ;; problem on its own, but read-event will have marked the window's
299 ;; display matrix to be accurate -- which is broken by the subsequent
300 ;; call to delete-region. Therefore, we must call force-window-update
301 ;; after delete-region to explicitly clear the accurate state of the
302 ;; window's display matrix.
304 (defun iso-accents-compose (prompt)
305 (let* ((first-char last-input-event)
306 (list (assq first-char iso-accents-list))
307 ;; Wait for the second key and look up the combination.
308 (second-char (if (or prompt
309 (not (eq (key-binding "a")
310 'self-insert-command))
311 ;; Not at start of a key sequence.
312 (> (length (this-single-command-keys)) 1)
313 ;; Called from anything but the command loop.
317 (or prompt "Compose with ")
322 (delete-region (1- (point)) (point))
323 ;; Display is no longer up-to-date.
324 (force-window-update (selected-window)))))
325 (entry (cdr (assq second-char list))))
327 ;; Found it: return the mapped char
329 (if (and enable-multibyte-characters
331 (+ iso-accents-insert-offset entry)
333 ;; Otherwise, advance and schedule the second key for execution.
334 (push second-char unread-command-events)
335 (vector first-char))))
337 ;; It is a matter of taste if you want the minor mode indicated
338 ;; in the mode line...
339 ;; If so, uncomment the next four lines.
340 ;; (or (assq 'iso-accents-mode minor-mode-alist)
341 ;; (setq minor-mode-alist
342 ;; (append minor-mode-alist
343 ;; '((iso-accents-mode " ISO-Acc")))))
346 (defun iso-accents-mode (&optional arg)
347 "Toggle ISO Accents mode, in which accents modify the following letter.
348 This permits easy insertion of accented characters according to ISO-8859-1.
349 When Iso-accents mode is enabled, accent character keys
350 \(`, ', \", ^, / and ~) do not self-insert; instead, they modify the following
351 letter key so that it inserts an ISO accented letter.
353 You can customize ISO Accents mode to a particular language
354 with the command `iso-accents-customize'.
356 Special combinations: ~c gives a c with cedilla,
357 ~d gives an Icelandic eth (d with dash).
358 ~t gives an Icelandic thorn.
359 \"s gives German sharp s.
360 /a gives a with ring.
361 /e gives an a-e ligature.
362 ~< and ~> give guillemots.
363 ~! gives an inverted exclamation mark.
364 ~? gives an inverted question mark.
366 With an argument, a positive argument enables ISO Accents mode,
367 and a negative argument disables it."
372 ;; Negative arg means switch it off.
373 (<= (prefix-numeric-value arg) 0)
374 ;; No arg means toggle.
376 (setq iso-accents-mode nil)
378 ;; Enable electric accents.
379 (setq iso-accents-mode t)))
381 (defun iso-accents-customize (language)
382 "Customize the ISO accents machinery for a particular language.
383 It selects the customization based on the specifications in the
384 `iso-languages' variable."
385 (interactive (list (completing-read "Language: " iso-languages nil t)))
386 (let ((table (cdr (assoc language iso-languages)))
389 (error "Unknown language `%s'" language)
390 (setq iso-accents-insert-offset (- (make-char (if (symbolp (car table))
394 (if (symbolp (car table))
395 (setq table (cdr table)))
396 (setq iso-language language
397 iso-accents-list table)
398 (if key-translation-map
399 (substitute-key-definition
400 'iso-accents-accent-key nil key-translation-map)
401 (setq key-translation-map (make-sparse-keymap)))
402 ;; Set up translations for all the characters that are used as
403 ;; accent prefixes in this language.
404 (setq tail iso-accents-list)
406 (define-key key-translation-map (vector (car (car tail)))
407 'iso-accents-accent-key)
408 (setq tail (cdr tail))))))
410 (defun iso-accentuate (start end)
411 "Convert two-character sequences in region into accented characters.
412 Noninteractively, this operates on text from START to END.
413 This uses the same conversion that ISO Accents mode uses for type-in."
417 (narrow-to-region start end)
421 (while (< (point) end)
422 (if (and (memq (preceding-char) iso-accents-enable)
423 (setq entry (cdr (assq (following-char) (assq (preceding-char) iso-accents-list)))))
429 (forward-char 1)))))))
431 (defun iso-accent-rassoc-unit (value alist)
433 (while (and alist (not elt))
434 (setq acc (car (car alist))
435 elt (car (rassq value (cdr (car alist))))
440 (defun iso-unaccentuate (start end)
441 "Convert accented characters in the region into two-character sequences.
442 Noninteractively, this operates on text from START to END.
443 This uses the opposite of the conversion done by ISO Accents mode for type-in."
447 (narrow-to-region start end)
450 (while (< (point) end)
451 (if (and (> (following-char) 127)
452 (setq entry (iso-accent-rassoc-unit (following-char)
456 (insert (car entry) (cdr entry))
458 (forward-char 1)))))))
460 (defun iso-deaccentuate (start end)
461 "Convert accented characters in the region into unaccented characters.
462 Noninteractively, this operates on text from START to END."
466 (narrow-to-region start end)
469 (while (< (point) end)
470 (if (and (> (following-char) 127)
471 (setq entry (iso-accent-rassoc-unit (following-char)
475 (insert (cdr entry)))
476 (forward-char 1)))))))
478 ;; Set up the default settings.
479 (iso-accents-customize "latin-1")
481 ;; Use Iso-Accents mode in the minibuffer
482 ;; if it was in use in the previous buffer.
483 (defun iso-acc-minibuf-setup ()
484 (setq iso-accents-mode
485 (with-current-buffer (window-buffer minibuffer-scroll-window)
488 (add-hook 'minibuffer-setup-hook 'iso-acc-minibuf-setup)
490 ;;; iso-acc.el ends here