1 ;;; iso-acc.el --- minor mode providing electric accent keys
3 ;; Copyright (C) 1993-1994, 1996, 2001-2012 Free Software Foundation, Inc.
5 ;; Author: Johan Vromans
8 ;; Obsolete-since: 22.1
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 ;; Function `iso-accents-mode' activates a minor mode in which
28 ;; typewriter "dead keys" are emulated. The purpose of this emulation
29 ;; is to provide a simple means for inserting accented characters
30 ;; according to the ISO-8859-1...3 character sets.
32 ;; In `iso-accents-mode', pseudo accent characters are used to
33 ;; introduce accented keys. The pseudo-accent characters are:
35 ;; ' (minute) -> acute accent
36 ;; ` (backtick) -> grave accent
37 ;; " (second) -> diaeresis
38 ;; ^ (caret) -> circumflex
39 ;; ~ (tilde) -> tilde over the character
40 ;; / (slash) -> slash through the character.
41 ;; Also: /A is A-with-ring and /E is AE ligature.
42 ;; These two are enabled only if you set iso-accents-enable
44 ;; . (period) -> dot over the character (some languages only)
45 ;; , (cedilla) -> cedilla under the character (some languages only)
47 ;; The action taken depends on the key that follows the pseudo accent.
50 ;; pseudo-accent + appropriate letter -> accented letter
51 ;; pseudo-accent + space -> pseudo-accent (except comma and period)
52 ;; pseudo-accent + pseudo-accent -> accent (if available)
53 ;; pseudo-accent + other -> pseudo-accent + other
55 ;; If the pseudo-accent is followed by anything else than a
56 ;; self-insert-command, the dead-key code is terminated, the
57 ;; pseudo-accent inserted 'as is' and the bell is rung to signal this.
59 ;; Function `iso-accents-mode' can be used to enable the iso accents
60 ;; minor mode, or disable it.
62 ;; If you want only some of these characters to serve as accents,
63 ;; add a language to `iso-languages' which specifies the accent characters
64 ;; that you want, then select the language with `iso-accents-customize'.
71 "Minor mode providing electric accent keys."
72 :prefix
"iso-accents-"
75 (defcustom iso-accents-insert-offset nonascii-insert-offset
76 "Offset added by ISO Accents mode to character codes 0200 and above."
82 ;; Note this includes some extra characters used in Spanish,
83 ;; on the idea that someone who uses Catalan is likely to use Spanish
85 (?
' (?A . ?
\301) (?E . ?
\311) (?I . ?
\315) (?O . ?
\323) (?U . ?
\332)
86 (?a . ?
\341) (?e . ?
\351) (?i . ?
\355) (?o . ?
\363) (?u . ?
\372)
88 (?
` (?A . ?
\300) (?E . ?
\310) (?O . ?
\322)
89 (?a . ?
\340) (?e . ?
\350) (?o . ?
\362)
91 (?
\" (?I . ?
\317) (?U . ?
\334) (?i . ?
\357) (?u . ?
\374)
93 (?~
(?C . ?
\307) (?N . ?
\321) (?c . ?
\347) (?n . ?
\361)
94 (?
> . ?
\273) (?
< . ?
\253) (?
! . ?
\241) (?? . ?
\277)
98 (?^
(?H . ?
\246) (?J . ?
\254) (?h . ?
\266) (?j . ?
\274) (?C . ?
\306)
99 (?G . ?
\330) (?S . ?
\336) (?c . ?
\346) (?g . ?
\370) (?s . ?
\376)
101 (?~
(?U . ?
\335) (?u . ?
\375) (?\ . ?~
)))
104 (?
' (?E . ?
\311) (?C . ?
\307) (?e . ?
\351) (?c . ?
\347)
106 (?
` (?A . ?
\300) (?E . ?
\310) (?U . ?
\331)
107 (?a . ?
\340) (?e . ?
\350) (?u . ?
\371)
109 (?^
(?A . ?
\302) (?E . ?
\312) (?I . ?
\316) (?O . ?
\324) (?U . ?
\333)
110 (?a . ?
\342) (?e . ?
\352) (?i . ?
\356) (?o . ?
\364) (?u . ?
\373)
112 (?
\" (?E . ?
\313) (?I . ?
\317)
113 (?e . ?
\353) (?i . ?
\357)
115 (?~
(?
< . ?
\253) (?
> . ?
\273) (?C . ?
\307) (?c . ?
\347)
117 (?
, (?C . ?
\307) (?c . ?
\347) (?\ . ?\
,)))
120 (?
\" (?A . ?
\304) (?O . ?
\326) (?U . ?
\334)
121 (?a . ?
\344) (?o . ?
\366) (?u . ?
\374) (?s . ?
\337) (?\ . ?
\")))
124 (?
' (?A . ?
\301) (?E . ?
\311) (?I . ?
\315) (?O . ?
\323) (?U . ?
\332)
125 (?a . ?
\341) (?e . ?
\351) (?i . ?
\355) (?o . ?
\363) (?u . ?
\372)
129 (?
' (?A . ?
\301) (?E . ?
\311) (?I . ?
\315) (?O . ?
\323) (?U . ?
\332)
130 (?C . ?
\307) (?a . ?
\341) (?e . ?
\351) (?i . ?
\355) (?o . ?
\363)
131 (?u . ?
\372) (?c . ?
\347)
133 (?
` (?A . ?
\300) (?a . ?
\340)
135 (?^
(?A . ?
\302) (?E . ?
\312) (?O . ?
\324)
136 (?a . ?
\342) (?e . ?
\352) (?o . ?
\364)
138 (?
\" (?U . ?
\334) (?u . ?
\374)
140 (?~
(?A . ?
\303) (?O . ?
\325) (?a . ?
\343) (?o . ?
\365)
141 (?C . ?
\307) (?N . ?
\321) (?c . ?
\347) (?n . ?
\361)
143 (?
, (?c . ?
\347) (?C . ?
\307) (?
, . ?
,)))
146 (?
' (?A . ?
\301) (?E . ?
\311) (?I . ?
\315) (?O . ?
\323) (?U . ?
\332)
147 (?a . ?
\341) (?e . ?
\351) (?i . ?
\355) (?o . ?
\363) (?u . ?
\372)
149 (?
\" (?U . ?
\334) (?u . ?
\374) (?\ . ?
\"))
150 (?\~
(?N . ?
\321) (?n . ?
\361) (?
> . ?
\273) (?
< . ?
\253) (?
! . ?
\241)
151 (?? . ?
\277) (?\ . ?\~
)))
154 (?
' (?A . ?
\301) (?E . ?
\311) (?I . ?
\315) (?O . ?
\323) (?U . ?
\332)
155 (?Y . ?
\335) (?a . ?
\341) (?e . ?
\351) (?i . ?
\355) (?o . ?
\363)
156 (?u . ?
\372) (?y . ?
\375) (?
' . ?
\264)
158 (?
` (?A . ?
\300) (?E . ?
\310) (?I . ?
\314) (?O . ?
\322) (?U . ?
\331)
159 (?a . ?
\340) (?e . ?
\350) (?i . ?
\354) (?o . ?
\362) (?u . ?
\371)
161 (?^
(?A . ?
\302) (?E . ?
\312) (?I . ?
\316) (?O . ?
\324) (?U . ?
\333)
162 (?a . ?
\342) (?e . ?
\352) (?i . ?
\356) (?o . ?
\364) (?u . ?
\373)
164 (?
\" (?A . ?
\304) (?E . ?
\313) (?I . ?
\317) (?O . ?
\326) (?U . ?
\334)
165 (?a . ?
\344) (?e . ?
\353) (?i . ?
\357) (?o . ?
\366) (?s . ?
\337)
166 (?u . ?
\374) (?y . ?
\377)
167 (?
\" . ?
\250) (?\ . ?
\"))
168 (?~
(?A . ?
\303) (?C . ?
\307) (?D . ?
\320) (?N . ?
\321) (?O . ?
\325)
169 (?T . ?
\336) (?a . ?
\343) (?c . ?
\347) (?d . ?
\360) (?n . ?
\361)
170 (?o . ?
\365) (?t . ?
\376)
171 (?
> . ?
\273) (?
< . ?
\253) (?
! . ?
\241) (?? . ?
\277)
172 (?\~ . ?
\270) (?\ . ?~
))
173 (?
/ (?A . ?
\305) (?E . ?
\306) (?O . ?
\330) (?a . ?
\345) (?e . ?
\346)
175 (?
/ . ?
\260) (?\ . ?
/)))
177 ("latin-2" latin-iso8859-2
178 (?
' (?A . ?
\301) (?C . ?
\306) (?D . ?
\320) (?E . ?
\311) (?I . ?
\315)
179 (?L . ?
\305) (?N . ?
\321) (?O . ?
\323) (?R . ?
\300) (?S . ?
\246)
180 (?U . ?
\332) (?Y . ?
\335) (?Z . ?
\254)
181 (?a . ?
\341) (?c . ?
\346) (?d . ?
\360) (?e . ?
\351) (?i . ?
\355)
182 (?l . ?
\345) (?n . ?
\361) (?o . ?
\363) (?r . ?
\340) (?s . ?
\266)
183 (?u . ?
\372) (?y . ?
\375) (?z . ?
\274)
184 (?
' . ?
\264) (?\ . ?
'))
185 (?
` (?A . ?
\241) (?C . ?
\307) (?E . ?
\312) (?L . ?
\243) (?S . ?
\252)
186 (?T . ?
\336) (?Z . ?
\257)
187 (?a . ?
\261) (?l . ?
\263) (?c . ?
\347) (?e . ?
\352) (?s . ?
\272)
188 (?t . ?
\376) (?z . ?
\277)
190 (?. . ?
\377) (?\ . ?
`))
191 (?^
(?A . ?
\302) (?I . ?
\316) (?O . ?
\324)
192 (?a . ?
\342) (?i . ?
\356) (?o . ?
\364)
193 (?^ . ?^
) ; no special code?
195 (?
\" (?A . ?
\304) (?E . ?
\313) (?O . ?
\326) (?U . ?
\334)
196 (?a . ?
\344) (?e . ?
\353) (?o . ?
\366) (?s . ?
\337) (?u . ?
\374)
199 (?~
(?A . ?
\303) (?C . ?
\310) (?D . ?
\317) (?L . ?
\245) (?N . ?
\322)
200 (?O . ?
\325) (?R . ?
\330) (?S . ?
\251) (?T . ?
\253) (?U . ?
\333)
202 (?a . ?
\343) (?c . ?
\350) (?d . ?
\357) (?l . ?
\265) (?n . ?
\362)
203 (?o . ?
\365) (?r . ?
\370) (?s . ?
\271) (?t . ?
\273) (?u . ?
\373)
205 (?v . ?
\242) ; v accent
206 (?\~ . ?
\242) ; v accent
207 (?\. . ?
\270) ; cedilla accent
210 ("latin-3" latin-iso8859-3
211 (?
' (?A . ?
\301) (?E . ?
\311) (?I . ?
\315) (?O . ?
\323) (?U . ?
\332)
212 (?a . ?
\341) (?e . ?
\351) (?i . ?
\355) (?o . ?
\363) (?u . ?
\372)
213 (?
' . ?
\264) (?\ . ?
'))
214 (?
` (?A . ?
\300) (?E . ?
\310) (?I . ?
\314) (?O . ?
\322) (?U . ?
\331)
215 (?a . ?
\340) (?e . ?
\350) (?i . ?
\354) (?o . ?
\362) (?u . ?
\371)
217 (?^
(?A . ?
\302) (?C . ?
\306) (?E . ?
\312) (?G . ?
\330) (?H . ?
\246)
218 (?I . ?
\316) (?J . ?
\254) (?O . ?
\324) (?S . ?
\336) (?U . ?
\333)
219 (?a . ?
\342) (?c . ?
\346) (?e . ?
\352) (?g . ?
\370) (?h . ?
\266)
220 (?i . ?
\356) (?j . ?
\274) (?o . ?
\364) (?s . ?
\376) (?u . ?
\373)
222 (?
\" (?A . ?
\304) (?E . ?
\313) (?I . ?
\317) (?O . ?
\326) (?U . ?
\334)
223 (?a . ?
\344) (?e . ?
\353) (?i . ?
\357) (?o . ?
\366) (?u . ?
\374)
225 (?
\" . ?
\250) (?\ . ?
\"))
226 (?~
(?A . ?
\303) (?C . ?
\307) (?D . ?
\320) (?N . ?
\321) (?O . ?
\325)
227 (?a . ?
\343) (?c . ?
\347) (?d . ?
\360) (?n . ?
\361) (?o . ?
\365)
228 (?$ . ?
\245) (?S . ?
\252) (?s . ?
\272) (?G . ?
\253) (?g . ?
\273)
229 (?U . ?
\335) (?u . ?
\375) (?
` . ?
\242)
230 (?~ . ?
\270) (?\ . ?~
))
231 (?
/ (?C . ?
\305) (?G . ?
\325) (?H . ?
\241) (?I . ?
\251) (?Z . ?
\257)
232 (?c . ?
\345) (?g . ?
\365) (?h . ?
\261) (?i . ?
\271) (?z . ?
\277)
234 (?. . ?
\377) (?
# . ?
\243) (?$ . ?
\244)
235 (?
/ . ?
\260) (?\ . ?
/))
236 (?.
(?C . ?
\305) (?G . ?
\325) (?I . ?
\251) (?Z . ?
\257)
237 (?c . ?
\345) (?g . ?
\365) (?z . ?
\277))))
238 "List of language-specific customizations for the ISO Accents mode.
240 Each element of the list is of the form
243 (PSEUDO-ACCENT MAPPINGS)
244 (PSEUDO-ACCENT MAPPINGS)
247 LANGUAGE is a string naming the language.
248 CHARSET (which may be omitted) is the symbol name
249 of the character set used in this language.
250 If CHARSET is omitted, latin-iso8859-1 is the default.
251 PSEUDO-ACCENT is a char specifying an accent key.
252 MAPPINGS are cons cells of the form (CHAR . ISO-CHAR).
254 The net effect is that the key sequence PSEUDO-ACCENT CHAR is mapped
255 to ISO-CHAR on input.")
257 (defvar iso-language nil
258 "Language for which ISO Accents mode is currently customized.
259 Change it with the `iso-accents-customize' function.")
261 (defvar iso-accents-list nil
262 "Association list for ISO accent combinations, for the chosen language.")
264 (defcustom iso-accents-mode nil
265 "Non-nil enables ISO Accents mode.
266 Setting this variable makes it local to the current buffer.
267 See the function `iso-accents-mode'."
270 (make-variable-buffer-local 'iso-accents-mode
)
272 (defcustom iso-accents-enable
'(?
' ?
` ?^ ?
\" ?~ ?
/)
273 "List of accent keys that become prefixes in ISO Accents mode.
274 The default is (?' ?` ?^ ?\" ?~ ?/), which contains all the supported
275 accent keys. If you set this variable to a list in which some of those
276 characters are missing, the missing ones do not act as accents.
278 Note that if you specify a language with `iso-accents-customize',
279 that can also turn off certain prefixes (whichever ones are not needed in
280 the language you choose)."
281 :type
'(repeat character
)
284 (defun iso-accents-accent-key (prompt)
285 "Modify the following character by adding an accent to it."
286 ;; Pick up the accent character.
287 (if (and iso-accents-mode
288 (memq last-input-event iso-accents-enable
))
289 (iso-accents-compose prompt
)
290 (vector last-input-event
)))
293 ;; The iso-accents-compose function is called deep inside Emacs' read
294 ;; key sequence machinery, so the call to read-event below actually
295 ;; recurses into that machinery. Doing that does not cause any
296 ;; problem on its own, but read-event will have marked the window's
297 ;; display matrix to be accurate -- which is broken by the subsequent
298 ;; call to delete-region. Therefore, we must call force-window-update
299 ;; after delete-region to explicitly clear the accurate state of the
300 ;; window's display matrix.
302 (defun iso-accents-compose (prompt)
303 (let* ((first-char last-input-event
)
304 (list (assq first-char iso-accents-list
))
305 ;; Wait for the second key and look up the combination.
306 (second-char (if (or prompt
307 (not (eq (key-binding "a")
308 'self-insert-command
))
309 ;; Not at start of a key sequence.
310 (> (length (this-single-command-keys)) 1)
311 ;; Called from anything but the command loop.
315 (or prompt
"Compose with ")
320 (delete-region (1- (point)) (point))
321 ;; Display is no longer up-to-date.
322 (force-window-update (selected-window)))))
323 (entry (cdr (assq second-char list
))))
325 ;; Found it: return the mapped char
327 (if (and enable-multibyte-characters
329 (+ iso-accents-insert-offset entry
)
331 ;; Otherwise, advance and schedule the second key for execution.
332 (push second-char unread-command-events
)
333 (vector first-char
))))
335 ;; It is a matter of taste if you want the minor mode indicated
336 ;; in the mode line...
337 ;; If so, uncomment the next four lines.
338 ;; (or (assq 'iso-accents-mode minor-mode-alist)
339 ;; (setq minor-mode-alist
340 ;; (append minor-mode-alist
341 ;; '((iso-accents-mode " ISO-Acc")))))
344 (defun iso-accents-mode (&optional arg
)
345 "Toggle ISO Accents mode, in which accents modify the following letter.
346 This permits easy insertion of accented characters according to ISO-8859-1.
347 When Iso-accents mode is enabled, accent character keys
348 \(`, ', \", ^, / and ~) do not self-insert; instead, they modify the following
349 letter key so that it inserts an ISO accented letter.
351 You can customize ISO Accents mode to a particular language
352 with the command `iso-accents-customize'.
354 Special combinations: ~c gives a c with cedilla,
355 ~d gives an Icelandic eth (d with dash).
356 ~t gives an Icelandic thorn.
357 \"s gives German sharp s.
358 /a gives a with ring.
359 /e gives an a-e ligature.
360 ~< and ~> give guillemots.
361 ~! gives an inverted exclamation mark.
362 ~? gives an inverted question mark.
364 With an argument, a positive argument enables ISO Accents mode,
365 and a negative argument disables it."
370 ;; Negative arg means switch it off.
371 (<= (prefix-numeric-value arg
) 0)
372 ;; No arg means toggle.
374 (setq iso-accents-mode nil
)
376 ;; Enable electric accents.
377 (setq iso-accents-mode t
)))
379 (defun iso-accents-customize (language)
380 "Customize the ISO accents machinery for a particular language.
381 It selects the customization based on the specifications in the
382 `iso-languages' variable."
383 (interactive (list (completing-read "Language: " iso-languages nil t
)))
384 (let ((table (cdr (assoc language iso-languages
)))
387 (error "Unknown language `%s'" language
)
388 (setq iso-accents-insert-offset
(- (make-char (if (symbolp (car table
))
392 (if (symbolp (car table
))
393 (setq table
(cdr table
)))
394 (setq iso-language language
395 iso-accents-list table
)
396 (if key-translation-map
397 (substitute-key-definition
398 'iso-accents-accent-key nil key-translation-map
)
399 (setq key-translation-map
(make-sparse-keymap)))
400 ;; Set up translations for all the characters that are used as
401 ;; accent prefixes in this language.
402 (setq tail iso-accents-list
)
404 (define-key key-translation-map
(vector (car (car tail
)))
405 'iso-accents-accent-key
)
406 (setq tail
(cdr tail
))))))
408 (defun iso-accentuate (start end
)
409 "Convert two-character sequences in region into accented characters.
410 Noninteractively, this operates on text from START to END.
411 This uses the same conversion that ISO Accents mode uses for type-in."
415 (narrow-to-region start end
)
419 (while (< (point) end
)
420 (if (and (memq (preceding-char) iso-accents-enable
)
421 (setq entry
(cdr (assq (following-char) (assq (preceding-char) iso-accents-list
)))))
427 (forward-char 1)))))))
429 (defun iso-accent-rassoc-unit (value alist
)
431 (while (and alist
(not elt
))
432 (setq acc
(car (car alist
))
433 elt
(car (rassq value
(cdr (car alist
))))
438 (defun iso-unaccentuate (start end
)
439 "Convert accented characters in the region into two-character sequences.
440 Noninteractively, this operates on text from START to END.
441 This uses the opposite of the conversion done by ISO Accents mode for type-in."
445 (narrow-to-region start end
)
448 (while (< (point) end
)
449 (if (and (> (following-char) 127)
450 (setq entry
(iso-accent-rassoc-unit (following-char)
454 (insert (car entry
) (cdr entry
))
456 (forward-char 1)))))))
458 (defun iso-deaccentuate (start end
)
459 "Convert accented characters in the region into unaccented characters.
460 Noninteractively, this operates on text from START to END."
464 (narrow-to-region start end
)
467 (while (< (point) end
)
468 (if (and (> (following-char) 127)
469 (setq entry
(iso-accent-rassoc-unit (following-char)
473 (insert (cdr entry
)))
474 (forward-char 1)))))))
476 ;; Set up the default settings.
477 (iso-accents-customize "latin-1")
479 ;; Use Iso-Accents mode in the minibuffer
480 ;; if it was in use in the previous buffer.
481 (defun iso-acc-minibuf-setup ()
482 (setq iso-accents-mode
483 (with-current-buffer (window-buffer minibuffer-scroll-window
)
486 (add-hook 'minibuffer-setup-hook
'iso-acc-minibuf-setup
)
488 ;;; iso-acc.el ends here