diff options
Diffstat (limited to 'lisp/obsolete/iso-acc.el')
| -rw-r--r-- | lisp/obsolete/iso-acc.el | 489 |
1 files changed, 489 insertions, 0 deletions
diff --git a/lisp/obsolete/iso-acc.el b/lisp/obsolete/iso-acc.el new file mode 100644 index 00000000000..a18d4e543f6 --- /dev/null +++ b/lisp/obsolete/iso-acc.el @@ -0,0 +1,489 @@ +;;; iso-acc.el --- minor mode providing electric accent keys + +;; Copyright (C) 1993-1994, 1996, 2001-2017 Free Software Foundation, +;; Inc. + +;; Author: Johan Vromans +;; Maintainer: emacs-devel@gnu.org +;; Keywords: i18n +;; Obsolete-since: 22.1 + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software: you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. + +;;; Commentary: + +;; Function `iso-accents-mode' activates a minor mode in which +;; typewriter "dead keys" are emulated. The purpose of this emulation +;; is to provide a simple means for inserting accented characters +;; according to the ISO-8859-1...3 character sets. +;; +;; In `iso-accents-mode', pseudo accent characters are used to +;; introduce accented keys. The pseudo-accent characters are: +;; +;; ' (minute) -> acute accent +;; ` (backtick) -> grave accent +;; " (second) -> diaeresis +;; ^ (caret) -> circumflex +;; ~ (tilde) -> tilde over the character +;; / (slash) -> slash through the character. +;; Also: /A is A-with-ring and /E is AE ligature. +;; These two are enabled only if you set iso-accents-enable +;; to include them: +;; . (period) -> dot over the character (some languages only) +;; , (cedilla) -> cedilla under the character (some languages only) +;; +;; The action taken depends on the key that follows the pseudo accent. +;; In general: +;; +;; pseudo-accent + appropriate letter -> accented letter +;; pseudo-accent + space -> pseudo-accent (except comma and period) +;; pseudo-accent + pseudo-accent -> accent (if available) +;; pseudo-accent + other -> pseudo-accent + other +;; +;; If the pseudo-accent is followed by anything else than a +;; self-insert-command, the dead-key code is terminated, the +;; pseudo-accent inserted ‘as is’ and the bell is rung to signal this. +;; +;; Function `iso-accents-mode' can be used to enable the iso accents +;; minor mode, or disable it. + +;; If you want only some of these characters to serve as accents, +;; add a language to `iso-languages' which specifies the accent characters +;; that you want, then select the language with `iso-accents-customize'. + +;;; Code: + +(provide 'iso-acc) + +(defgroup iso-acc nil + "Minor mode providing electric accent keys." + :prefix "iso-accents-" + :group 'i18n) + +(defcustom iso-accents-insert-offset nonascii-insert-offset + "Offset added by ISO Accents mode to character codes 0200 and above." + :type 'integer + :group 'iso-acc) + +(defvar iso-languages + '(("catalan" + ;; Note this includes some extra characters used in Spanish, + ;; on the idea that someone who uses Catalan is likely to use Spanish + ;; as well. + (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332) + (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372) + (?\ . ?')) + (?` (?A . ?\300) (?E . ?\310) (?O . ?\322) + (?a . ?\340) (?e . ?\350) (?o . ?\362) + (?\ . ?`)) + (?\" (?I . ?\317) (?U . ?\334) (?i . ?\357) (?u . ?\374) + (?\ . ?\")) + (?~ (?C . ?\307) (?N . ?\321) (?c . ?\347) (?n . ?\361) + (?> . ?\273) (?< . ?\253) (?! . ?\241) (?? . ?\277) + (?\ . ?\~))) + + ("esperanto" + (?^ (?H . ?\246) (?J . ?\254) (?h . ?\266) (?j . ?\274) (?C . ?\306) + (?G . ?\330) (?S . ?\336) (?c . ?\346) (?g . ?\370) (?s . ?\376) + (?^ . ?^) (?\ . ?^)) + (?~ (?U . ?\335) (?u . ?\375) (?\ . ?~))) + + ("french" + (?' (?E . ?\311) (?C . ?\307) (?e . ?\351) (?c . ?\347) + (?\ . ?')) + (?` (?A . ?\300) (?E . ?\310) (?U . ?\331) + (?a . ?\340) (?e . ?\350) (?u . ?\371) + (?\ . ?`)) + (?^ (?A . ?\302) (?E . ?\312) (?I . ?\316) (?O . ?\324) (?U . ?\333) + (?a . ?\342) (?e . ?\352) (?i . ?\356) (?o . ?\364) (?u . ?\373) + (?\ . ?^)) + (?\" (?E . ?\313) (?I . ?\317) + (?e . ?\353) (?i . ?\357) + (?\ . ?\")) + (?~ (?< . ?\253) (?> . ?\273) (?C . ?\307) (?c . ?\347) + (?\ . ?~)) + (?, (?C . ?\307) (?c . ?\347) (?\ . ?\,))) + + ("german" + (?\" (?A . ?\304) (?O . ?\326) (?U . ?\334) + (?a . ?\344) (?o . ?\366) (?u . ?\374) (?s . ?\337) (?\ . ?\"))) + + ("irish" + (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332) + (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372) + (?\ . ?'))) + + ("portuguese" + (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332) + (?C . ?\307) (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) + (?u . ?\372) (?c . ?\347) + (?\ . ?')) + (?` (?A . ?\300) (?a . ?\340) + (?\ . ?`)) + (?^ (?A . ?\302) (?E . ?\312) (?O . ?\324) + (?a . ?\342) (?e . ?\352) (?o . ?\364) + (?\ . ?^)) + (?\" (?U . ?\334) (?u . ?\374) + (?\ . ?\")) + (?~ (?A . ?\303) (?O . ?\325) (?a . ?\343) (?o . ?\365) + (?C . ?\307) (?N . ?\321) (?c . ?\347) (?n . ?\361) + (?\ . ?~)) + (?, (?c . ?\347) (?C . ?\307) (?, . ?,))) + + ("spanish" + (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332) + (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372) + (?\ . ?')) + (?\" (?U . ?\334) (?u . ?\374) (?\ . ?\")) + (?\~ (?N . ?\321) (?n . ?\361) (?> . ?\273) (?< . ?\253) (?! . ?\241) + (?? . ?\277) (?\ . ?\~))) + + ("latin-1" + (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332) + (?Y . ?\335) (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) + (?u . ?\372) (?y . ?\375) (?' . ?\264) + (?\ . ?')) + (?` (?A . ?\300) (?E . ?\310) (?I . ?\314) (?O . ?\322) (?U . ?\331) + (?a . ?\340) (?e . ?\350) (?i . ?\354) (?o . ?\362) (?u . ?\371) + (?` . ?`) (?\ . ?`)) + (?^ (?A . ?\302) (?E . ?\312) (?I . ?\316) (?O . ?\324) (?U . ?\333) + (?a . ?\342) (?e . ?\352) (?i . ?\356) (?o . ?\364) (?u . ?\373) + (?^ . ?^) (?\ . ?^)) + (?\" (?A . ?\304) (?E . ?\313) (?I . ?\317) (?O . ?\326) (?U . ?\334) + (?a . ?\344) (?e . ?\353) (?i . ?\357) (?o . ?\366) (?s . ?\337) + (?u . ?\374) (?y . ?\377) + (?\" . ?\250) (?\ . ?\")) + (?~ (?A . ?\303) (?C . ?\307) (?D . ?\320) (?N . ?\321) (?O . ?\325) + (?T . ?\336) (?a . ?\343) (?c . ?\347) (?d . ?\360) (?n . ?\361) + (?o . ?\365) (?t . ?\376) + (?> . ?\273) (?< . ?\253) (?! . ?\241) (?? . ?\277) + (?\~ . ?\270) (?\ . ?~)) + (?/ (?A . ?\305) (?E . ?\306) (?O . ?\330) (?a . ?\345) (?e . ?\346) + (?o . ?\370) + (?/ . ?\260) (?\ . ?/))) + + ("latin-2" latin-iso8859-2 + (?' (?A . ?\301) (?C . ?\306) (?D . ?\320) (?E . ?\311) (?I . ?\315) + (?L . ?\305) (?N . ?\321) (?O . ?\323) (?R . ?\300) (?S . ?\246) + (?U . ?\332) (?Y . ?\335) (?Z . ?\254) + (?a . ?\341) (?c . ?\346) (?d . ?\360) (?e . ?\351) (?i . ?\355) + (?l . ?\345) (?n . ?\361) (?o . ?\363) (?r . ?\340) (?s . ?\266) + (?u . ?\372) (?y . ?\375) (?z . ?\274) + (?' . ?\264) (?\ . ?')) + (?` (?A . ?\241) (?C . ?\307) (?E . ?\312) (?L . ?\243) (?S . ?\252) + (?T . ?\336) (?Z . ?\257) + (?a . ?\261) (?l . ?\263) (?c . ?\347) (?e . ?\352) (?s . ?\272) + (?t . ?\376) (?z . ?\277) + (?` . ?\252) + (?. . ?\377) (?\ . ?`)) + (?^ (?A . ?\302) (?I . ?\316) (?O . ?\324) + (?a . ?\342) (?i . ?\356) (?o . ?\364) + (?^ . ?^) ; no special code? + (?\ . ?^)) + (?\" (?A . ?\304) (?E . ?\313) (?O . ?\326) (?U . ?\334) + (?a . ?\344) (?e . ?\353) (?o . ?\366) (?s . ?\337) (?u . ?\374) + (?\" . ?\250) + (?\ . ?\")) + (?~ (?A . ?\303) (?C . ?\310) (?D . ?\317) (?L . ?\245) (?N . ?\322) + (?O . ?\325) (?R . ?\330) (?S . ?\251) (?T . ?\253) (?U . ?\333) + (?Z . ?\256) + (?a . ?\343) (?c . ?\350) (?d . ?\357) (?l . ?\265) (?n . ?\362) + (?o . ?\365) (?r . ?\370) (?s . ?\271) (?t . ?\273) (?u . ?\373) + (?z . ?\276) + (?v . ?\242) ; v accent + (?\~ . ?\242) ; v accent + (?\. . ?\270) ; cedilla accent + (?\ . ?~))) + + ("latin-3" latin-iso8859-3 + (?' (?A . ?\301) (?E . ?\311) (?I . ?\315) (?O . ?\323) (?U . ?\332) + (?a . ?\341) (?e . ?\351) (?i . ?\355) (?o . ?\363) (?u . ?\372) + (?' . ?\264) (?\ . ?')) + (?` (?A . ?\300) (?E . ?\310) (?I . ?\314) (?O . ?\322) (?U . ?\331) + (?a . ?\340) (?e . ?\350) (?i . ?\354) (?o . ?\362) (?u . ?\371) + (?` . ?`) (?\ . ?`)) + (?^ (?A . ?\302) (?C . ?\306) (?E . ?\312) (?G . ?\330) (?H . ?\246) + (?I . ?\316) (?J . ?\254) (?O . ?\324) (?S . ?\336) (?U . ?\333) + (?a . ?\342) (?c . ?\346) (?e . ?\352) (?g . ?\370) (?h . ?\266) + (?i . ?\356) (?j . ?\274) (?o . ?\364) (?s . ?\376) (?u . ?\373) + (?^ . ?^) (?\ . ?^)) + (?\" (?A . ?\304) (?E . ?\313) (?I . ?\317) (?O . ?\326) (?U . ?\334) + (?a . ?\344) (?e . ?\353) (?i . ?\357) (?o . ?\366) (?u . ?\374) + (?s . ?\337) + (?\" . ?\250) (?\ . ?\")) + (?~ (?A . ?\303) (?C . ?\307) (?D . ?\320) (?N . ?\321) (?O . ?\325) + (?a . ?\343) (?c . ?\347) (?d . ?\360) (?n . ?\361) (?o . ?\365) + (?$ . ?\245) (?S . ?\252) (?s . ?\272) (?G . ?\253) (?g . ?\273) + (?U . ?\335) (?u . ?\375) (?` . ?\242) + (?~ . ?\270) (?\ . ?~)) + (?/ (?C . ?\305) (?G . ?\325) (?H . ?\241) (?I . ?\251) (?Z . ?\257) + (?c . ?\345) (?g . ?\365) (?h . ?\261) (?i . ?\271) (?z . ?\277) + (?r . ?\256) + (?. . ?\377) (?# . ?\243) (?$ . ?\244) + (?/ . ?\260) (?\ . ?/)) + (?. (?C . ?\305) (?G . ?\325) (?I . ?\251) (?Z . ?\257) + (?c . ?\345) (?g . ?\365) (?z . ?\277)))) + "List of language-specific customizations for the ISO Accents mode. + +Each element of the list is of the form + + (LANGUAGE [CHARSET] + (PSEUDO-ACCENT MAPPINGS) + (PSEUDO-ACCENT MAPPINGS) + ...) + +LANGUAGE is a string naming the language. +CHARSET (which may be omitted) is the symbol name + of the character set used in this language. + If CHARSET is omitted, latin-iso8859-1 is the default. +PSEUDO-ACCENT is a char specifying an accent key. +MAPPINGS are cons cells of the form (CHAR . ISO-CHAR). + +The net effect is that the key sequence PSEUDO-ACCENT CHAR is mapped +to ISO-CHAR on input.") + +(defvar iso-language nil + "Language for which ISO Accents mode is currently customized. +Change it with the `iso-accents-customize' function.") + +(defvar iso-accents-list nil + "Association list for ISO accent combinations, for the chosen language.") + +(defcustom iso-accents-mode nil + "Non-nil enables ISO Accents mode. +Setting this variable makes it local to the current buffer. +See the function `iso-accents-mode'." + :type 'boolean + :group 'iso-acc) +(make-variable-buffer-local 'iso-accents-mode) + +(defcustom iso-accents-enable '(?' ?` ?^ ?\" ?~ ?/) + "List of accent keys that become prefixes in ISO Accents mode. +The default is (?\\=' ?\\=` ?^ ?\" ?~ ?/), which contains all the supported +accent keys. If you set this variable to a list in which some of those +characters are missing, the missing ones do not act as accents. + +Note that if you specify a language with `iso-accents-customize', +that can also turn off certain prefixes (whichever ones are not needed in +the language you choose)." + :type '(repeat character) + :group 'iso-acc) + +(defun iso-accents-accent-key (prompt) + "Modify the following character by adding an accent to it." + ;; Pick up the accent character. + (if (and iso-accents-mode + (memq last-input-event iso-accents-enable)) + (iso-accents-compose prompt) + (vector last-input-event))) + + +;; The iso-accents-compose function is called deep inside Emacs' read +;; key sequence machinery, so the call to read-event below actually +;; recurses into that machinery. Doing that does not cause any +;; problem on its own, but read-event will have marked the window's +;; display matrix to be accurate -- which is broken by the subsequent +;; call to delete-region. Therefore, we must call force-window-update +;; after delete-region to explicitly clear the accurate state of the +;; window's display matrix. + +(defun iso-accents-compose (prompt) + (let* ((first-char last-input-event) + (list (assq first-char iso-accents-list)) + ;; Wait for the second key and look up the combination. + (second-char (if (or prompt + (not (eq (key-binding "a") + 'self-insert-command)) + ;; Not at start of a key sequence. + (> (length (this-single-command-keys)) 1) + ;; Called from anything but the command loop. + this-command) + (progn + (message "%s%c" + (or prompt "Compose with ") + first-char) + (read-event)) + (insert first-char) + (prog1 (read-event) + (delete-region (1- (point)) (point)) + ;; Display is no longer up-to-date. + (force-window-update (selected-window))))) + (entry (cdr (assq second-char list)))) + (if entry + ;; Found it: return the mapped char + (vector + (if (and enable-multibyte-characters + (>= entry ?\200)) + (+ iso-accents-insert-offset entry) + entry)) + ;; Otherwise, advance and schedule the second key for execution. + (push second-char unread-command-events) + (vector first-char)))) + +;; It is a matter of taste if you want the minor mode indicated +;; in the mode line... +;; If so, uncomment the next four lines. +;; (or (assq 'iso-accents-mode minor-mode-alist) +;; (setq minor-mode-alist +;; (append minor-mode-alist +;; '((iso-accents-mode " ISO-Acc"))))) + +;;;###autoload +(defun iso-accents-mode (&optional arg) + "Toggle ISO Accents mode, in which accents modify the following letter. +This permits easy insertion of accented characters according to ISO-8859-1. +When Iso-accents mode is enabled, accent character keys +\(\\=`, \\=', \", ^, / and ~) do not self-insert; instead, they modify the following +letter key so that it inserts an ISO accented letter. + +You can customize ISO Accents mode to a particular language +with the command `iso-accents-customize'. + +Special combinations: ~c gives a c with cedilla, +~d gives an Icelandic eth (d with dash). +~t gives an Icelandic thorn. +\"s gives German sharp s. +/a gives a with ring. +/e gives an a-e ligature. +~< and ~> give guillemots. +~! gives an inverted exclamation mark. +~? gives an inverted question mark. + +With an argument, a positive argument enables ISO Accents mode, +and a negative argument disables it." + + (interactive "P") + + (if (if arg + ;; Negative arg means switch it off. + (<= (prefix-numeric-value arg) 0) + ;; No arg means toggle. + iso-accents-mode) + (setq iso-accents-mode nil) + + ;; Enable electric accents. + (setq iso-accents-mode t))) + +(defun iso-accents-customize (language) + "Customize the ISO accents machinery for a particular language. +It selects the customization based on the specifications in the +`iso-languages' variable." + (interactive (list (completing-read "Language: " iso-languages nil t))) + (let ((table (cdr (assoc language iso-languages))) + all-accents tail) + (if (not table) + (error "Unknown language `%s'" language) + (setq iso-accents-insert-offset (- (make-char (if (symbolp (car table)) + (car table) + 'latin-iso8859-1)) + 128)) + (if (symbolp (car table)) + (setq table (cdr table))) + (setq iso-language language + iso-accents-list table) + (if key-translation-map + (substitute-key-definition + 'iso-accents-accent-key nil key-translation-map) + (setq key-translation-map (make-sparse-keymap))) + ;; Set up translations for all the characters that are used as + ;; accent prefixes in this language. + (setq tail iso-accents-list) + (while tail + (define-key key-translation-map (vector (car (car tail))) + 'iso-accents-accent-key) + (setq tail (cdr tail)))))) + +(defun iso-accentuate (start end) + "Convert two-character sequences in region into accented characters. +Noninteractively, this operates on text from START to END. +This uses the same conversion that ISO Accents mode uses for type-in." + (interactive "r") + (save-excursion + (save-restriction + (narrow-to-region start end) + (goto-char start) + (forward-char 1) + (let (entry) + (while (< (point) end) + (if (and (memq (preceding-char) iso-accents-enable) + (setq entry (cdr (assq (following-char) (assq (preceding-char) iso-accents-list))))) + (progn + (forward-char -1) + (delete-char 2) + (insert entry) + (setq end (1- end))) + (forward-char 1))))))) + +(defun iso-accent-rassoc-unit (value alist) + (let (elt acc) + (while (and alist (not elt)) + (setq acc (car (car alist)) + elt (car (rassq value (cdr (car alist)))) + alist (cdr alist))) + (if elt + (cons acc elt)))) + +(defun iso-unaccentuate (start end) + "Convert accented characters in the region into two-character sequences. +Noninteractively, this operates on text from START to END. +This uses the opposite of the conversion done by ISO Accents mode for type-in." + (interactive "r") + (save-excursion + (save-restriction + (narrow-to-region start end) + (goto-char start) + (let (entry) + (while (< (point) end) + (if (and (> (following-char) 127) + (setq entry (iso-accent-rassoc-unit (following-char) + iso-accents-list))) + (progn + (delete-char 1) + (insert (car entry) (cdr entry)) + (setq end (1+ end))) + (forward-char 1))))))) + +(defun iso-deaccentuate (start end) + "Convert accented characters in the region into unaccented characters. +Noninteractively, this operates on text from START to END." + (interactive "r") + (save-excursion + (save-restriction + (narrow-to-region start end) + (goto-char start) + (let (entry) + (while (< (point) end) + (if (and (> (following-char) 127) + (setq entry (iso-accent-rassoc-unit (following-char) + iso-accents-list))) + (progn + (delete-char 1) + (insert (cdr entry))) + (forward-char 1))))))) + +;; Set up the default settings. +(iso-accents-customize "latin-1") + +;; Use Iso-Accents mode in the minibuffer +;; if it was in use in the previous buffer. +(defun iso-acc-minibuf-setup () + (setq iso-accents-mode + (with-current-buffer (window-buffer minibuffer-scroll-window) + iso-accents-mode))) + +(add-hook 'minibuffer-setup-hook 'iso-acc-minibuf-setup) + +;;; iso-acc.el ends here |