; Spelling fixes
[emacs.git] / lisp / textmodes / flyspell.el
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1 ;;; flyspell.el --- On-the-fly spell checker -*- lexical-binding:t -*-
3 ;; Copyright (C) 1998, 2000-2017 Free Software Foundation, Inc.
5 ;; Author: Manuel Serrano <Manuel.Serrano@sophia.inria.fr>
6 ;; Maintainer: emacs-devel@gnu.org
7 ;; Keywords: convenience
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
26 ;; Flyspell is a minor Emacs mode performing on-the-fly spelling
27 ;; checking.
29 ;; To enable Flyspell minor mode, type M-x flyspell-mode.
30 ;; This applies only to the current buffer.
32 ;; To enable Flyspell in text representing computer programs, type
33 ;; M-x flyspell-prog-mode.
34 ;; In that mode only text inside comments is checked.
36 ;; Some user variables control the behavior of flyspell. They are
37 ;; those defined under the `User variables' comment.
39 ;;; Code:
41 (require 'ispell)
42 (eval-when-compile (require 'cl-lib))
44 ;;*---------------------------------------------------------------------*/
45 ;;* Group ... */
46 ;;*---------------------------------------------------------------------*/
47 (defgroup flyspell nil
48 "Spell checking on the fly."
49 :tag "FlySpell"
50 :prefix "flyspell-"
51 :group 'ispell
52 :group 'processes)
54 ;;*---------------------------------------------------------------------*/
55 ;;* User configuration ... */
56 ;;*---------------------------------------------------------------------*/
57 (defcustom flyspell-highlight-flag t
58 "How Flyspell should indicate misspelled words.
59 Non-nil means use highlight, nil means use minibuffer messages."
60 :group 'flyspell
61 :type 'boolean)
63 (defcustom flyspell-mark-duplications-flag t
64 "Non-nil means Flyspell reports a repeated word as an error.
65 See `flyspell-mark-duplications-exceptions' to add exceptions to this rule.
66 Detection of repeated words is not implemented in
67 \"large\" regions; see variable `flyspell-large-region'."
68 :group 'flyspell
69 :type 'boolean)
71 (defcustom flyspell-mark-duplications-exceptions
72 '((nil . ("that" "had")) ; Common defaults for English.
73 ("\\`francais" . ("nous" "vous")))
74 "A list of exceptions for duplicated words.
75 It should be a list of (LANGUAGE . EXCEPTION-LIST).
77 LANGUAGE is nil, which means the exceptions apply regardless of
78 the current dictionary, or a regular expression matching the
79 dictionary name (`ispell-local-dictionary' or
80 `ispell-dictionary') for which the exceptions should apply.
82 EXCEPTION-LIST is a list of strings. The checked word is
83 downcased before comparing with these exceptions."
84 :group 'flyspell
85 :type '(alist :key-type (choice (const :tag "All dictionaries" nil)
86 string)
87 :value-type (repeat string))
88 :version "24.1")
90 (defcustom flyspell-sort-corrections nil
91 "If non-nil, sort the corrections before popping them.
92 The sorting is controlled by the `flyspell-sort-corrections-function'
93 variable, and defaults to sorting alphabetically."
94 :group 'flyspell
95 :version "21.1"
96 :type 'boolean)
98 (defcustom flyspell-sort-corrections-function
99 'flyspell-sort-corrections-alphabetically
100 "The function used to sort corrections.
101 This only happens if `flyspell-sort-corrections' is non-nil. The
102 function takes three parameters -- the two correction candidates
103 to be sorted, and the third parameter is the word that's being
104 corrected."
105 :version "26.1"
106 :type 'function
107 :group 'flyspell)
109 (defun flyspell-sort-corrections-alphabetically (corr1 corr2 _)
110 (string< corr1 corr2))
112 (defun flyspell-sort (corrs word)
113 (if flyspell-sort-corrections
114 (sort corrs
115 (lambda (c1 c2)
116 (funcall flyspell-sort-corrections-function c1 c2 word)))
117 corrs))
119 (defcustom flyspell-duplicate-distance 400000
120 "The maximum distance for finding duplicates of unrecognized words.
121 This applies to the feature that when a word is not found in the dictionary,
122 if the same spelling occurs elsewhere in the buffer,
123 Flyspell uses a different face (`flyspell-duplicate') to highlight it.
124 This variable specifies how far to search to find such a duplicate.
125 -1 means no limit (search the whole buffer).
126 0 means do not search for duplicate unrecognized spellings."
127 :group 'flyspell
128 :version "24.5" ; -1 -> 400000
129 :type '(choice (const :tag "no limit" -1)
130 number))
132 (defcustom flyspell-delay 3
133 "The number of seconds to wait before checking, after a \"delayed\" command."
134 :group 'flyspell
135 :type 'number)
137 (defcustom flyspell-persistent-highlight t
138 "Non-nil means misspelled words remain highlighted until corrected.
139 If this variable is nil, only the most recently detected misspelled word
140 is highlighted."
141 :group 'flyspell
142 :type 'boolean)
144 (defcustom flyspell-highlight-properties t
145 "Non-nil means highlight incorrect words even if a property exists for this word."
146 :group 'flyspell
147 :type 'boolean)
149 (defcustom flyspell-default-delayed-commands
150 '(self-insert-command
151 delete-backward-char
152 backward-or-forward-delete-char
153 delete-char
154 scrollbar-vertical-drag
155 backward-delete-char-untabify)
156 "The standard list of delayed commands for Flyspell.
157 See `flyspell-delayed-commands'."
158 :group 'flyspell
159 :version "21.1"
160 :type '(repeat (symbol)))
162 (defcustom flyspell-delayed-commands nil
163 "List of commands that are \"delayed\" for Flyspell mode.
164 After these commands, Flyspell checking is delayed for a short time,
165 whose length is specified by `flyspell-delay'."
166 :group 'flyspell
167 :type '(repeat (symbol)))
169 (defcustom flyspell-default-deplacement-commands
170 '(next-line previous-line
171 handle-switch-frame handle-select-window
172 scroll-up
173 scroll-down)
174 "The standard list of deplacement commands for Flyspell.
175 See variable `flyspell-deplacement-commands'."
176 :group 'flyspell
177 :version "21.1"
178 :type '(repeat (symbol)))
180 (defcustom flyspell-deplacement-commands nil
181 "List of commands that are \"deplacement\" for Flyspell mode.
182 After these commands, Flyspell checking is performed only if the previous
183 command was not the very same command."
184 :group 'flyspell
185 :version "21.1"
186 :type '(repeat (symbol)))
188 (defcustom flyspell-issue-welcome-flag t
189 "Non-nil means that Flyspell should display a welcome message when started."
190 :group 'flyspell
191 :type 'boolean)
193 (defcustom flyspell-issue-message-flag t
194 "Non-nil means that Flyspell emits messages when checking words."
195 :group 'flyspell
196 :type 'boolean)
198 (defcustom flyspell-incorrect-hook nil
199 "List of functions to be called when incorrect words are encountered.
200 Each function is given three arguments. The first two
201 arguments are the beginning and the end of the incorrect region.
202 The third is either the symbol `doublon' or the list
203 of possible corrections as returned by `ispell-parse-output'.
205 If any of the functions return non-nil, the word is not highlighted as
206 incorrect."
207 :group 'flyspell
208 :version "21.1"
209 :type 'hook)
211 (defcustom flyspell-default-dictionary nil
212 "A string that is the name of the default dictionary.
213 This is passed to the `ispell-change-dictionary' when flyspell is started.
214 If the variable `ispell-local-dictionary' or `ispell-dictionary' is non-nil
215 when flyspell is started, the value of that variable is used instead
216 of `flyspell-default-dictionary' to select the default dictionary.
217 Otherwise, if `flyspell-default-dictionary' is nil, it means to use
218 Ispell's ultimate default dictionary."
219 :group 'flyspell
220 :version "21.1"
221 :type '(choice string (const :tag "Default" nil)))
223 (defcustom flyspell-tex-command-regexp
224 "\\(\\(begin\\|end\\)[ \t]*{\\|\\(cite[a-z*]*\\|label\\|ref\\|eqref\\|usepackage\\|documentclass\\)[ \t]*\\(\\[[^]]*\\]\\)?{[^{}]*\\)"
225 "A string that is the regular expression that matches TeX commands."
226 :group 'flyspell
227 :version "21.1"
228 :type 'string)
230 (defcustom flyspell-check-tex-math-command nil
231 "Non-nil means check even inside TeX math environment.
232 TeX math environments are discovered by `texmathp', implemented
233 inside AUCTeX package. That package may be found at
234 URL `http://www.gnu.org/software/auctex/'"
235 :group 'flyspell
236 :type 'boolean)
238 (defcustom flyspell-dictionaries-that-consider-dash-as-word-delimiter
239 '("francais" "deutsch8" "norsk")
240 "List of dictionary names that consider `-' as word delimiter."
241 :group 'flyspell
242 :version "21.1"
243 :type '(repeat (string)))
245 (defcustom flyspell-abbrev-p
247 "If non-nil, add correction to abbreviation table."
248 :group 'flyspell
249 :version "21.1"
250 :type 'boolean)
252 (defcustom flyspell-use-global-abbrev-table-p
254 "If non-nil, prefer global abbrev table to local abbrev table."
255 :group 'flyspell
256 :version "21.1"
257 :type 'boolean)
259 (defcustom flyspell-mode-line-string " Fly"
260 "String displayed on the mode line when flyspell is active.
261 Set this to nil if you don't want a mode line indicator."
262 :group 'flyspell
263 :type '(choice string (const :tag "None" nil)))
265 (defcustom flyspell-large-region 1000
266 "The threshold that determines if a region is small.
267 If the region is smaller than this number of characters,
268 `flyspell-region' checks the words sequentially using regular
269 flyspell methods. Else, if the region is large, a new Ispell process is
270 spawned for speed.
272 Doubled words are not detected in a large region, because Ispell
273 does not check for them.
275 If this variable is nil, all regions are treated as small."
276 :group 'flyspell
277 :version "21.1"
278 :type '(choice number (const :tag "All small" nil)))
280 (defcustom flyspell-insert-function (function insert)
281 "Function for inserting word by flyspell upon correction."
282 :group 'flyspell
283 :type 'function)
285 (defcustom flyspell-before-incorrect-word-string nil
286 "String used to indicate an incorrect word starting."
287 :group 'flyspell
288 :type '(choice string (const nil)))
290 (defcustom flyspell-after-incorrect-word-string nil
291 "String used to indicate an incorrect word ending."
292 :group 'flyspell
293 :type '(choice string (const nil)))
295 (defvar flyspell-mode-map)
297 (defcustom flyspell-use-meta-tab t
298 "Non-nil means that flyspell uses M-TAB to correct word."
299 :group 'flyspell
300 :type 'boolean
301 :initialize 'custom-initialize-default
302 :set (lambda (sym val)
303 (define-key flyspell-mode-map "\M-\t"
304 (if (set sym val)
305 'flyspell-auto-correct-word))))
307 (defcustom flyspell-auto-correct-binding
308 [(control ?\;)]
309 "The key binding for flyspell auto correction."
310 :type 'key-sequence
311 :group 'flyspell)
313 ;;*---------------------------------------------------------------------*/
314 ;;* Mode specific options */
315 ;;* ------------------------------------------------------------- */
316 ;;* Mode specific options enable users to disable flyspell on */
317 ;;* certain word depending of the emacs mode. For instance, when */
318 ;;* using flyspell with mail-mode add the following expression */
319 ;;* in your init file: */
320 ;;* (add-hook 'mail-mode */
321 ;;* (lambda () (setq flyspell-generic-check-word-predicate */
322 ;;* 'mail-mode-flyspell-verify))) */
323 ;;*---------------------------------------------------------------------*/
324 (defvar flyspell-generic-check-word-predicate nil
325 "Function providing per-mode customization over which words are flyspelled.
326 Returns t to continue checking, nil otherwise.
327 Flyspell mode sets this variable to whatever is the `flyspell-mode-predicate'
328 property of the major mode name.")
329 (make-variable-buffer-local 'flyspell-generic-check-word-predicate)
330 (define-obsolete-variable-alias 'flyspell-generic-check-word-p
331 'flyspell-generic-check-word-predicate "25.1")
333 ;;*--- mail mode -------------------------------------------------------*/
334 (put 'mail-mode 'flyspell-mode-predicate 'mail-mode-flyspell-verify)
335 (put 'message-mode 'flyspell-mode-predicate 'mail-mode-flyspell-verify)
336 (defvar message-signature-separator)
337 (defun mail-mode-flyspell-verify ()
338 "Function used for `flyspell-generic-check-word-predicate' in Mail mode."
339 (let* ((header-end (save-excursion
340 (goto-char (point-min))
341 (re-search-forward
342 (concat "^\\(?:"
343 (regexp-quote mail-header-separator)
344 "\\)?$")
345 nil t)
346 (point)))
347 (signature-begin
348 (if (not (boundp 'message-signature-separator))
349 (point-max)
350 (save-excursion
351 (goto-char (point-max))
352 (re-search-backward message-signature-separator
353 (max header-end (- (point) 4000)) t)
354 (point)))))
355 (cond ((< (point) header-end)
356 (and (save-excursion (beginning-of-line)
357 (looking-at "^Subject:"))
358 (> (point) (match-end 0))))
359 ((> (point) signature-begin)
360 nil)
362 (save-excursion
363 (beginning-of-line)
364 (not (looking-at "[>}|]\\|To:")))))))
366 ;;*--- texinfo mode ----------------------------------------------------*/
367 (put 'texinfo-mode 'flyspell-mode-predicate 'texinfo-mode-flyspell-verify)
368 (defun texinfo-mode-flyspell-verify ()
369 "Function used for `flyspell-generic-check-word-predicate' in Texinfo mode."
370 (save-excursion
371 (forward-word-strictly -1)
372 (not (looking-at "@"))))
374 ;;*--- tex mode --------------------------------------------------------*/
375 (put 'tex-mode 'flyspell-mode-predicate 'tex-mode-flyspell-verify)
376 (defun tex-mode-flyspell-verify ()
377 "Function used for `flyspell-generic-check-word-predicate' in LaTeX mode."
378 (and
379 (not (save-excursion
380 (re-search-backward "^[ \t]*%%%[ \t]+Local" nil t)))
381 (not (save-excursion
382 (let ((this (point)))
383 (beginning-of-line)
384 (and (re-search-forward "\\\\\\(cite\\|label\\|ref\\){[^}]*}"
385 (line-end-position) t)
386 (>= this (match-beginning 0))
387 (<= this (match-end 0))))))))
389 ;;*--- sgml mode -------------------------------------------------------*/
390 (put 'sgml-mode 'flyspell-mode-predicate 'sgml-mode-flyspell-verify)
391 (put 'html-mode 'flyspell-mode-predicate 'sgml-mode-flyspell-verify)
392 (put 'nxml-mode 'flyspell-mode-predicate 'sgml-mode-flyspell-verify)
394 (autoload 'sgml-lexical-context "sgml-mode")
396 (defun sgml-mode-flyspell-verify ()
397 "Function used for `flyspell-generic-check-word-predicate' in SGML mode.
398 Tag and attribute names are not spell checked, everything else is.
400 String values of attributes are checked because they can be text
401 like <img alt=\"Some thing.\">."
403 (not (memq (car (sgml-lexical-context))
404 '(tag pi))))
406 ;;*---------------------------------------------------------------------*/
407 ;;* Programming mode */
408 ;;*---------------------------------------------------------------------*/
409 (defvar flyspell-prog-text-faces
410 '(font-lock-string-face font-lock-comment-face font-lock-doc-face)
411 "Faces corresponding to text in programming-mode buffers.")
413 (defun flyspell-generic-progmode-verify ()
414 "Used for `flyspell-generic-check-word-predicate' in programming modes."
415 ;; (point) is next char after the word. Must check one char before.
416 (let ((f (get-text-property (- (point) 1) 'face)))
417 (memq f flyspell-prog-text-faces)))
419 ;; Records the binding of M-TAB in effect before flyspell was activated.
420 (defvar flyspell--prev-meta-tab-binding)
422 ;;;###autoload
423 (defun flyspell-prog-mode ()
424 "Turn on `flyspell-mode' for comments and strings."
425 (interactive)
426 (setq flyspell-generic-check-word-predicate
427 #'flyspell-generic-progmode-verify)
428 (setq-local flyspell--prev-meta-tab-binding
429 (or (local-key-binding "\M-\t" t)
430 (global-key-binding "\M-\t" t)))
431 (flyspell-mode 1)
432 (run-hooks 'flyspell-prog-mode-hook))
434 ;;*---------------------------------------------------------------------*/
435 ;;* Overlay compatibility */
436 ;;*---------------------------------------------------------------------*/
437 (autoload 'make-overlay "overlay" "Overlay compatibility kit." t)
438 (autoload 'overlayp "overlay" "Overlay compatibility kit." t)
439 (autoload 'overlays-in "overlay" "Overlay compatibility kit." t)
440 (autoload 'delete-overlay "overlay" "Overlay compatibility kit." t)
441 (autoload 'overlays-at "overlay" "Overlay compatibility kit." t)
442 (autoload 'overlay-put "overlay" "Overlay compatibility kit." t)
443 (autoload 'overlay-get "overlay" "Overlay compatibility kit." t)
444 (autoload 'previous-overlay-change "overlay" "Overlay compatibility kit." t)
446 ;;*---------------------------------------------------------------------*/
447 ;;* The minor mode declaration. */
448 ;;*---------------------------------------------------------------------*/
449 (defvar flyspell-mouse-map
450 (make-sparse-keymap)
451 "Keymap for Flyspell to put on erroneous words.")
453 (defvar flyspell-mode-map
454 (let ((map (make-sparse-keymap)))
455 (if flyspell-use-meta-tab
456 (define-key map "\M-\t" 'flyspell-auto-correct-word))
457 (define-key map flyspell-auto-correct-binding 'flyspell-auto-correct-previous-word)
458 (define-key map [(control ?\,)] 'flyspell-goto-next-error)
459 (define-key map [(control ?\.)] 'flyspell-auto-correct-word)
460 (define-key map [?\C-c ?$] 'flyspell-correct-word-before-point)
461 map)
462 "Minor mode keymap for Flyspell mode--for the whole buffer.")
464 ;; dash character machinery
465 (defvar flyspell-consider-dash-as-word-delimiter-flag nil
466 "Non-nil means that the `-' char is considered as a word delimiter.")
467 (make-variable-buffer-local 'flyspell-consider-dash-as-word-delimiter-flag)
468 (defvar flyspell-dash-dictionary nil)
469 (make-variable-buffer-local 'flyspell-dash-dictionary)
470 (defvar flyspell-dash-local-dictionary nil)
471 (make-variable-buffer-local 'flyspell-dash-local-dictionary)
473 ;;*---------------------------------------------------------------------*/
474 ;;* Highlighting */
475 ;;*---------------------------------------------------------------------*/
476 (defface flyspell-incorrect
477 '((((supports :underline (:style wave)))
478 :underline (:style wave :color "Red1"))
480 :underline t :inherit error))
481 "Flyspell face for misspelled words."
482 :version "24.4"
483 :group 'flyspell)
485 (defface flyspell-duplicate
486 '((((supports :underline (:style wave)))
487 :underline (:style wave :color "DarkOrange"))
489 :underline t :inherit warning))
490 "Flyspell face for words that appear twice in a row.
491 See also `flyspell-duplicate-distance'."
492 :version "24.4"
493 :group 'flyspell)
495 (defvar flyspell-overlay nil)
497 ;;*---------------------------------------------------------------------*/
498 ;;* flyspell-mode ... */
499 ;;*---------------------------------------------------------------------*/
500 ;;;###autoload(defvar flyspell-mode nil "Non-nil if Flyspell mode is enabled.")
501 ;;;###autoload
502 (define-minor-mode flyspell-mode
503 "Toggle on-the-fly spell checking (Flyspell mode).
504 With a prefix argument ARG, enable Flyspell mode if ARG is
505 positive, and disable it otherwise. If called from Lisp, enable
506 the mode if ARG is omitted or nil.
508 Flyspell mode is a buffer-local minor mode. When enabled, it
509 spawns a single Ispell process and checks each word. The default
510 flyspell behavior is to highlight incorrect words.
512 Bindings:
513 \\[ispell-word]: correct words (using Ispell).
514 \\[flyspell-auto-correct-word]: automatically correct word.
515 \\[flyspell-auto-correct-previous-word]: automatically correct the last misspelled word.
516 \\[flyspell-correct-word] (or down-mouse-2): popup correct words.
518 Hooks:
519 This runs `flyspell-mode-hook' after flyspell mode is entered or exit.
521 Remark:
522 `flyspell-mode' uses `ispell-mode'. Thus all Ispell options are
523 valid. For instance, a different dictionary can be used by
524 invoking `ispell-change-dictionary'.
526 Consider using the `ispell-parser' to check your text. For instance
527 consider adding:
528 \(add-hook \\='tex-mode-hook (function (lambda () (setq ispell-parser \\='tex))))
529 in your init file.
531 \\[flyspell-region] checks all words inside a region.
532 \\[flyspell-buffer] checks the whole buffer."
533 :lighter flyspell-mode-line-string
534 :keymap flyspell-mode-map
535 :group 'flyspell
536 (if flyspell-mode
537 (condition-case err
538 (flyspell-mode-on)
539 (error (message "Error enabling Flyspell mode:\n%s" (cdr err))
540 (flyspell-mode -1)))
541 (flyspell-mode-off)))
543 ;;;###autoload
544 (defun turn-on-flyspell ()
545 "Unconditionally turn on Flyspell mode."
546 (flyspell-mode 1))
548 ;;;###autoload
549 (defun turn-off-flyspell ()
550 "Unconditionally turn off Flyspell mode."
551 (flyspell-mode -1))
553 (custom-add-option 'text-mode-hook 'turn-on-flyspell)
555 ;;*---------------------------------------------------------------------*/
556 ;;* flyspell-buffers ... */
557 ;;* ------------------------------------------------------------- */
558 ;;* For remembering buffers running flyspell */
559 ;;*---------------------------------------------------------------------*/
560 (defvar flyspell-buffers nil)
562 ;;*---------------------------------------------------------------------*/
563 ;;* flyspell-minibuffer-p ... */
564 ;;*---------------------------------------------------------------------*/
565 (defun flyspell-minibuffer-p (buffer)
566 "Is BUFFER a minibuffer?"
567 (let ((ws (get-buffer-window-list buffer t)))
568 (and (consp ws) (window-minibuffer-p (car ws)))))
570 ;;*---------------------------------------------------------------------*/
571 ;;* flyspell-accept-buffer-local-defs ... */
572 ;;*---------------------------------------------------------------------*/
573 (defvar flyspell-last-buffer nil
574 "The buffer in which the last flyspell operation took place.")
576 (defun flyspell-accept-buffer-local-defs (&optional force)
577 ;; When flyspell-word is used inside a loop (e.g. when processing
578 ;; flyspell-changes), the calls to `ispell-accept-buffer-local-defs' end
579 ;; up dwarfing everything else, so only do it when the buffer has changed.
580 (when (or force (not (eq flyspell-last-buffer (current-buffer))))
581 (setq flyspell-last-buffer (current-buffer))
582 ;; Strange problem: If buffer in current window has font-lock turned on,
583 ;; but SET-BUFFER was called to point to an invisible buffer, this ispell
584 ;; call will reset the buffer to the buffer in the current window.
585 ;; However, it only happens at startup (fix by Albert L. Ting).
586 (save-current-buffer
587 (ispell-accept-buffer-local-defs))
588 (unless (and (eq flyspell-dash-dictionary ispell-dictionary)
589 (eq flyspell-dash-local-dictionary ispell-local-dictionary))
590 ;; The dictionary has changed
591 (setq flyspell-dash-dictionary ispell-dictionary)
592 (setq flyspell-dash-local-dictionary ispell-local-dictionary)
593 (setq flyspell-consider-dash-as-word-delimiter-flag
594 (member (or ispell-local-dictionary ispell-dictionary)
595 flyspell-dictionaries-that-consider-dash-as-word-delimiter)))))
597 (defun flyspell-hack-local-variables-hook ()
598 ;; When local variables are loaded, see if the dictionary context
599 ;; has changed.
600 (flyspell-accept-buffer-local-defs 'force))
602 (defun flyspell-kill-ispell-hook ()
603 (setq flyspell-last-buffer nil)
604 (dolist (buf (buffer-list))
605 (with-current-buffer buf
606 (kill-local-variable 'flyspell-word-cache-word))))
608 ;; Make sure we flush our caches when needed. Do it here rather than in
609 ;; flyspell-mode-on, since flyspell-region may be used without ever turning
610 ;; on flyspell-mode.
611 (add-hook 'ispell-kill-ispell-hook 'flyspell-kill-ispell-hook)
613 ;;*---------------------------------------------------------------------*/
614 ;;* flyspell-mode-on ... */
615 ;;*---------------------------------------------------------------------*/
616 (defun flyspell-mode-on ()
617 "Turn Flyspell mode on. Do not use this; use `flyspell-mode' instead."
618 (ispell-set-spellchecker-params) ; Initialize variables and dicts alists
619 (setq ispell-highlight-face 'flyspell-incorrect)
620 ;; local dictionaries setup
621 (or ispell-local-dictionary ispell-dictionary
622 (if flyspell-default-dictionary
623 (ispell-change-dictionary flyspell-default-dictionary)))
624 ;; we have to force ispell to accept the local definition or
625 ;; otherwise it could be too late, the local dictionary may
626 ;; be forgotten!
627 ;; Pass the `force' argument for the case where flyspell was active already
628 ;; but the buffer's local-defs have been edited.
629 (flyspell-accept-buffer-local-defs 'force)
630 ;; we put the `flyspell-delayed' property on some commands
631 (flyspell-delay-commands)
632 ;; we put the `flyspell-deplacement' property on some commands
633 (flyspell-deplacement-commands)
634 ;; we bound flyspell action to post-command hook
635 (add-hook 'post-command-hook (function flyspell-post-command-hook) t t)
636 ;; we bound flyspell action to pre-command hook
637 (add-hook 'pre-command-hook (function flyspell-pre-command-hook) t t)
638 ;; we bound flyspell action to after-change hook
639 (add-hook 'after-change-functions 'flyspell-after-change-function nil t)
640 ;; we bound flyspell action to hack-local-variables-hook
641 (add-hook 'hack-local-variables-hook
642 (function flyspell-hack-local-variables-hook) t t)
643 ;; set flyspell-generic-check-word-predicate based on the major mode
644 (let ((mode-predicate (get major-mode 'flyspell-mode-predicate)))
645 (if mode-predicate
646 (setq flyspell-generic-check-word-predicate mode-predicate)))
647 ;; the welcome message
648 (if (and flyspell-issue-message-flag
649 flyspell-issue-welcome-flag
650 (called-interactively-p 'interactive))
651 (let ((binding (where-is-internal 'flyspell-auto-correct-word
652 nil 'non-ascii)))
653 (message "%s"
654 (if binding
655 (format "Welcome to flyspell. Use %s or Mouse-2 to correct words."
656 (key-description binding))
657 "Welcome to flyspell. Use Mouse-2 to correct words.")))))
659 ;;*---------------------------------------------------------------------*/
660 ;;* flyspell-delay-commands ... */
661 ;;*---------------------------------------------------------------------*/
662 (defun flyspell-delay-commands ()
663 "Install the standard set of Flyspell delayed commands."
664 (mapc 'flyspell-delay-command flyspell-default-delayed-commands)
665 (mapc 'flyspell-delay-command flyspell-delayed-commands))
667 ;;*---------------------------------------------------------------------*/
668 ;;* flyspell-delay-command ... */
669 ;;*---------------------------------------------------------------------*/
670 (defun flyspell-delay-command (command)
671 "Set COMMAND to be delayed, for Flyspell.
672 When flyspell `post-command-hook' is invoked because a delayed command
673 has been used, the current word is not immediately checked.
674 It will be checked only after `flyspell-delay' seconds."
675 (interactive "SDelay Flyspell after Command: ")
676 (put command 'flyspell-delayed t))
678 ;;*---------------------------------------------------------------------*/
679 ;;* flyspell-deplacement-commands ... */
680 ;;*---------------------------------------------------------------------*/
681 (defun flyspell-deplacement-commands ()
682 "Install the standard set of Flyspell deplacement commands."
683 (mapc 'flyspell-deplacement-command flyspell-default-deplacement-commands)
684 (mapc 'flyspell-deplacement-command flyspell-deplacement-commands))
686 ;;*---------------------------------------------------------------------*/
687 ;;* flyspell-deplacement-command ... */
688 ;;*---------------------------------------------------------------------*/
689 (defun flyspell-deplacement-command (command)
690 "Set COMMAND that implement cursor movements, for Flyspell.
691 When flyspell `post-command-hook' is invoked because a deplacement command
692 has been used, the current word is not checked."
693 (interactive "SDeplacement Flyspell after Command: ")
694 (put command 'flyspell-deplacement t))
696 ;;*---------------------------------------------------------------------*/
697 ;;* flyspell-word-cache ... */
698 ;;*---------------------------------------------------------------------*/
699 (defvar flyspell-word-cache-start nil)
700 (defvar flyspell-word-cache-end nil)
701 (defvar flyspell-word-cache-word nil)
702 (defvar flyspell-word-cache-result '_)
703 (make-variable-buffer-local 'flyspell-word-cache-start)
704 (make-variable-buffer-local 'flyspell-word-cache-end)
705 (make-variable-buffer-local 'flyspell-word-cache-word)
706 (make-variable-buffer-local 'flyspell-word-cache-result)
708 ;;*---------------------------------------------------------------------*/
709 ;;* The flyspell pre-hook, store the current position. In the */
710 ;;* post command hook, we will check, if the word at this position */
711 ;;* has to be spell checked. */
712 ;;*---------------------------------------------------------------------*/
713 (defvar flyspell-pre-buffer nil "Buffer current before `this-command'.")
714 (defvar flyspell-pre-point nil "Point before running `this-command'")
715 (defvar flyspell-pre-column nil "Column before running `this-command'")
716 (defvar flyspell-pre-pre-buffer nil)
717 (defvar flyspell-pre-pre-point nil)
718 (make-variable-buffer-local 'flyspell-pre-point) ;Why?? --Stef
720 ;;*---------------------------------------------------------------------*/
721 ;;* flyspell-previous-command ... */
722 ;;*---------------------------------------------------------------------*/
723 (defvar flyspell-previous-command nil
724 "The last interactive command checked by Flyspell.")
726 ;;*---------------------------------------------------------------------*/
727 ;;* flyspell-pre-command-hook ... */
728 ;;*---------------------------------------------------------------------*/
729 (defun flyspell-pre-command-hook ()
730 "Save the current buffer and point for Flyspell's post-command hook."
731 (interactive)
732 (setq flyspell-pre-buffer (current-buffer))
733 (setq flyspell-pre-point (point))
734 (setq flyspell-pre-column (current-column)))
736 ;;*---------------------------------------------------------------------*/
737 ;;* flyspell-mode-off ... */
738 ;;*---------------------------------------------------------------------*/
739 ;;;###autoload
740 (defun flyspell-mode-off ()
741 "Turn Flyspell mode off."
742 ;; We remove the hooks.
743 (remove-hook 'post-command-hook (function flyspell-post-command-hook) t)
744 (remove-hook 'pre-command-hook (function flyspell-pre-command-hook) t)
745 (remove-hook 'after-change-functions 'flyspell-after-change-function t)
746 (remove-hook 'hack-local-variables-hook
747 (function flyspell-hack-local-variables-hook) t)
748 ;; We remove all the flyspell highlightings.
749 (flyspell-delete-all-overlays)
750 ;; We have to erase pre cache variables.
751 (setq flyspell-pre-buffer nil)
752 (setq flyspell-pre-point nil)
753 ;; We mark the mode as killed.
754 (setq flyspell-mode nil))
756 ;;*---------------------------------------------------------------------*/
757 ;;* flyspell-check-pre-word-p ... */
758 ;;*---------------------------------------------------------------------*/
759 (defun flyspell-check-pre-word-p ()
760 "Return non-nil if we should check the word before point.
761 More precisely, it applies to the word that was before point
762 before the current command."
763 (let ((ispell-otherchars (ispell-get-otherchars)))
764 (cond
765 ((not (and (numberp flyspell-pre-point)
766 (eq flyspell-pre-buffer (current-buffer))))
767 nil)
768 ((and (eq flyspell-pre-pre-point flyspell-pre-point)
769 (eq flyspell-pre-pre-buffer flyspell-pre-buffer))
770 nil)
771 ((or (and (= flyspell-pre-point (- (point) 1))
772 (or (eq (char-syntax (char-after flyspell-pre-point)) ?w)
773 (and (not (string= "" ispell-otherchars))
774 (string-match
775 ispell-otherchars
776 (buffer-substring-no-properties
777 flyspell-pre-point (1+ flyspell-pre-point))))))
778 (= flyspell-pre-point (point))
779 (= flyspell-pre-point (+ (point) 1)))
780 nil)
781 ((and (symbolp this-command)
782 (not executing-kbd-macro)
783 (or (get this-command 'flyspell-delayed)
784 (and (get this-command 'flyspell-deplacement)
785 (eq flyspell-previous-command this-command)))
786 (or (= (current-column) 0)
787 (= (current-column) flyspell-pre-column)
788 ;; If other post-command-hooks change the buffer,
789 ;; flyspell-pre-point can lie past eob (bug#468).
790 (null (char-after flyspell-pre-point))
791 (or (eq (char-syntax (char-after flyspell-pre-point)) ?w)
792 (and (not (string= "" ispell-otherchars))
793 (string-match
794 ispell-otherchars
795 (buffer-substring-no-properties
796 flyspell-pre-point (1+ flyspell-pre-point)))))))
797 nil)
798 ((not (eq (current-buffer) flyspell-pre-buffer))
800 ((not (and (numberp flyspell-word-cache-start)
801 (numberp flyspell-word-cache-end)))
804 (or (< flyspell-pre-point flyspell-word-cache-start)
805 (> flyspell-pre-point flyspell-word-cache-end))))))
807 ;;*---------------------------------------------------------------------*/
808 ;;* The flyspell after-change-hook, store the change position. In */
809 ;;* the post command hook, we will check, if the word at this */
810 ;;* position has to be spell checked. */
811 ;;*---------------------------------------------------------------------*/
812 (defvar flyspell-changes nil)
813 (make-variable-buffer-local 'flyspell-changes)
815 ;;*---------------------------------------------------------------------*/
816 ;;* flyspell-after-change-function ... */
817 ;;*---------------------------------------------------------------------*/
818 (defun flyspell-after-change-function (start stop _len)
819 "Save the current buffer and point for Flyspell's post-command hook."
820 (push (cons start stop) flyspell-changes))
822 ;;*---------------------------------------------------------------------*/
823 ;;* flyspell-check-changed-word-p ... */
824 ;;*---------------------------------------------------------------------*/
825 (defun flyspell-check-changed-word-p (start stop)
826 "Return non-nil when the changed word has to be checked.
827 The answer depends of several criteria.
828 Mostly we check word delimiters."
829 (not (and (not (and (memq (char-after start) '(?\n ? )) (> stop start)))
830 (numberp flyspell-pre-point)
832 (and (>= flyspell-pre-point start) (<= flyspell-pre-point stop))
833 (let ((pos (point)))
834 (or (>= pos start) (<= pos stop) (= pos (1+ stop))))))))
836 ;;*---------------------------------------------------------------------*/
837 ;;* flyspell-check-word-p ... */
838 ;;*---------------------------------------------------------------------*/
839 (defun flyspell-check-word-p ()
840 "Return t when the word at `point' has to be checked.
841 The answer depends of several criteria.
842 Mostly we check word delimiters."
843 (let ((ispell-otherchars (ispell-get-otherchars)))
844 (cond
845 ((<= (- (point-max) 1) (point-min))
846 ;; The buffer is not filled enough.
847 nil)
848 ((and (and (> (current-column) 0)
849 (not (eq (current-column) flyspell-pre-column)))
850 (save-excursion
851 (backward-char 1)
852 (and (looking-at (flyspell-get-not-casechars))
853 (or (string= "" ispell-otherchars)
854 (not (looking-at ispell-otherchars)))
855 (or flyspell-consider-dash-as-word-delimiter-flag
856 (not (looking-at "-"))))))
857 ;; Yes because we have reached or typed a word delimiter.
859 ((symbolp this-command)
860 (cond
861 ((get this-command 'flyspell-deplacement)
862 (not (eq flyspell-previous-command this-command)))
863 ((get this-command 'flyspell-delayed)
864 ;; The current command is not delayed, that
865 ;; is that we must check the word now.
866 (and (not unread-command-events)
867 (sit-for flyspell-delay)))
868 (t t)))
869 (t t))))
871 ;;*---------------------------------------------------------------------*/
872 ;;* flyspell-debug-signal-no-check ... */
873 ;;*---------------------------------------------------------------------*/
874 (defun flyspell-debug-signal-no-check (msg obj)
875 (setq debug-on-error t)
876 (with-current-buffer (get-buffer-create "*flyspell-debug*")
877 (erase-buffer)
878 (insert "NO-CHECK:\n")
879 (insert (format " %S : %S\n" msg obj))))
881 ;;*---------------------------------------------------------------------*/
882 ;;* flyspell-debug-signal-pre-word-checked ... */
883 ;;*---------------------------------------------------------------------*/
884 (defun flyspell-debug-signal-pre-word-checked ()
885 (setq debug-on-error t)
886 (with-current-buffer (get-buffer-create "*flyspell-debug*")
887 (insert "PRE-WORD:\n")
888 (insert (format " pre-point : %S\n" flyspell-pre-point))
889 (insert (format " pre-buffer : %S\n" flyspell-pre-buffer))
890 (insert (format " cache-start: %S\n" flyspell-word-cache-start))
891 (insert (format " cache-end : %S\n" flyspell-word-cache-end))
892 (goto-char (point-max))))
894 ;;*---------------------------------------------------------------------*/
895 ;;* flyspell-debug-signal-word-checked ... */
896 ;;*---------------------------------------------------------------------*/
897 (defun flyspell-debug-signal-word-checked ()
898 (setq debug-on-error t)
899 (let ((ispell-otherchars (ispell-get-otherchars))
900 (oldbuf (current-buffer))
901 (point (point)))
902 (with-current-buffer (get-buffer-create "*flyspell-debug*")
903 (insert
904 "WORD:\n"
905 (format " this-cmd : %S\n" this-command)
906 (format " delayed : %S\n" (and (symbolp this-command)
907 (get this-command
908 'flyspell-delayed)))
909 (format " point : %S\n" point)
910 (format " prev-char : [%c] %S\n"
911 (with-current-buffer oldbuf
912 (if (bobp) ?\ (char-before)))
913 (with-current-buffer oldbuf
914 (if (bobp)
916 (save-excursion
917 (backward-char 1)
918 (and (looking-at (flyspell-get-not-casechars))
919 (or (string= "" ispell-otherchars)
920 (not (looking-at ispell-otherchars)))
921 (or flyspell-consider-dash-as-word-delimiter-flag
922 (not (looking-at "\\-")))
923 2)))))
924 (format " because : %S\n"
925 (cond
926 ((not (and (symbolp this-command)
927 (get this-command 'flyspell-delayed)))
928 ;; The current command is not delayed, that
929 ;; is that we must check the word now.
930 'not-delayed)
931 ((with-current-buffer oldbuf
932 (if (bobp)
934 (save-excursion
935 (backward-char 1)
936 (and (looking-at (flyspell-get-not-casechars))
937 (or (string= "" ispell-otherchars)
938 (not (looking-at ispell-otherchars)))
939 (or flyspell-consider-dash-as-word-delimiter-flag
940 (not (looking-at "\\-")))))))
941 ;; Yes because we have reached or typed a word delimiter.
942 'separator)
943 ((not (integerp flyspell-delay))
944 ;; Yes because the user set up a no-delay configuration.
945 'no-delay)
947 'sit-for))))
948 (goto-char (point-max)))))
950 ;;*---------------------------------------------------------------------*/
951 ;;* flyspell-debug-signal-changed-checked ... */
952 ;;*---------------------------------------------------------------------*/
953 (defun flyspell-debug-signal-changed-checked ()
954 (setq debug-on-error t)
955 (let ((point (point)))
956 (with-current-buffer (get-buffer-create "*flyspell-debug*")
957 (insert "CHANGED WORD:\n")
958 (insert (format " point : %S\n" point))
959 (goto-char (point-max)))))
961 ;;*---------------------------------------------------------------------*/
962 ;;* flyspell-post-command-hook ... */
963 ;;* ------------------------------------------------------------- */
964 ;;* It is possible that we check several words: */
965 ;;* 1- the current word is checked if the predicate */
966 ;;* FLYSPELL-CHECK-WORD-P is true */
967 ;;* 2- the word that used to be the current word before the */
968 ;;* THIS-COMMAND is checked if: */
969 ;;* a- the previous word is different from the current word */
970 ;;* b- the previous word has not just been checked by the */
971 ;;* previous FLYSPELL-POST-COMMAND-HOOK */
972 ;;* 3- the words changed by the THIS-COMMAND that are neither the */
973 ;;* previous word nor the current word */
974 ;;*---------------------------------------------------------------------*/
975 (defun flyspell-post-command-hook ()
976 "The `post-command-hook' used by flyspell to check a word on-the-fly."
977 (interactive)
978 (when flyspell-mode
979 (with-local-quit
980 (let ((command this-command)
981 ;; Prevent anything we do from affecting the mark.
982 deactivate-mark)
983 (if (flyspell-check-pre-word-p)
984 (save-excursion
985 '(flyspell-debug-signal-pre-word-checked)
986 (goto-char flyspell-pre-point)
987 (flyspell-word)))
988 (if (flyspell-check-word-p)
989 (progn
990 '(flyspell-debug-signal-word-checked)
991 ;; FIXME: This should be asynchronous!
992 (flyspell-word)
993 ;; we remember which word we have just checked.
994 ;; this will be used next time we will check a word
995 ;; to compare the next current word with the word
996 ;; that has been registered in the pre-command-hook
997 ;; that is these variables are used within the predicate
998 ;; FLYSPELL-CHECK-PRE-WORD-P
999 (setq flyspell-pre-pre-buffer (current-buffer))
1000 (setq flyspell-pre-pre-point (point)))
1001 (setq flyspell-pre-pre-buffer nil)
1002 (setq flyspell-pre-pre-point nil)
1003 ;; when a word is not checked because of a delayed command
1004 ;; we do not disable the ispell cache.
1005 (when (and (symbolp this-command)
1006 (get this-command 'flyspell-delayed))
1007 (setq flyspell-word-cache-end -1)
1008 (setq flyspell-word-cache-result '_)))
1009 (while (and (not (input-pending-p)) (consp flyspell-changes))
1010 (let ((start (car (car flyspell-changes)))
1011 (stop (cdr (car flyspell-changes))))
1012 (if (flyspell-check-changed-word-p start stop)
1013 (save-excursion
1014 '(flyspell-debug-signal-changed-checked)
1015 (goto-char start)
1016 (flyspell-word)))
1017 (setq flyspell-changes (cdr flyspell-changes))))
1018 (setq flyspell-previous-command command)))))
1020 ;;*---------------------------------------------------------------------*/
1021 ;;* flyspell-notify-misspell ... */
1022 ;;*---------------------------------------------------------------------*/
1023 (defun flyspell-notify-misspell (word poss)
1024 (let ((replacements (if (stringp poss)
1025 poss
1026 (flyspell-sort (car (cdr (cdr poss))) word))))
1027 (if flyspell-issue-message-flag
1028 (message "misspelling `%s' %S" word replacements))))
1030 ;;*---------------------------------------------------------------------*/
1031 ;;* flyspell-word-search-backward ... */
1032 ;;*---------------------------------------------------------------------*/
1033 (defun flyspell-word-search-backward (word bound &optional ignore-case)
1034 (save-excursion
1035 (let* ((r '())
1036 (inhibit-point-motion-hooks t)
1037 (flyspell-not-casechars (flyspell-get-not-casechars))
1038 (bound (if (and bound
1039 (> bound (point-min)))
1040 (- bound 1)))
1041 (word-re (concat
1042 "\\(?:" flyspell-not-casechars "\\|\\`\\)"
1043 (regexp-quote word)
1044 flyspell-not-casechars))
1046 (while
1047 (and (not r)
1048 (setq p
1049 (and
1050 (re-search-backward word-re bound t)
1051 (if (bobp)
1052 (point)
1053 (forward-char)
1054 (point)))))
1055 (let ((lw (flyspell-get-word)))
1056 (if (and (consp lw)
1057 (if ignore-case
1058 (string-equal (downcase (car lw)) (downcase word))
1059 (string-equal (car lw) word)))
1060 (setq r p)
1061 (goto-char p))))
1062 r)))
1064 ;;*---------------------------------------------------------------------*/
1065 ;;* flyspell-word-search-forward ... */
1066 ;;*---------------------------------------------------------------------*/
1067 (defun flyspell-word-search-forward (word bound)
1068 (save-excursion
1069 (let* ((r '())
1070 (inhibit-point-motion-hooks t)
1071 (flyspell-not-casechars (flyspell-get-not-casechars))
1072 (bound (if (and bound
1073 (< bound (point-max)))
1074 (+ bound 1)))
1075 (word-re (concat flyspell-not-casechars
1076 (regexp-quote word)
1077 "\\(?:" flyspell-not-casechars "\\|\\'\\)"))
1079 (while
1080 (and (not r)
1081 (setq p (and
1082 (re-search-forward word-re bound t)
1083 (if (eobp)
1084 (point)
1085 (backward-char)
1086 (point)))))
1087 (let ((lw (flyspell-get-word)))
1088 (if (and (consp lw) (string-equal (car lw) word))
1089 (setq r p)
1090 (goto-char (1+ p)))))
1091 r)))
1093 (defvar flyspell-word) ;Backward compatibility; some predicates made use of it!
1095 ;;*---------------------------------------------------------------------*/
1096 ;;* flyspell-word ... */
1097 ;;*---------------------------------------------------------------------*/
1098 (defun flyspell-word (&optional following known-misspelling)
1099 "Spell check a word.
1100 If the optional argument FOLLOWING, or, when called interactively
1101 `ispell-following-word', is non-nil, checks the following (rather
1102 than preceding) word when the cursor is not over a word. If
1103 optional argument KNOWN-MISSPELLING is non nil considers word a
1104 misspelling and skips redundant spell-checking step."
1105 (interactive (list ispell-following-word))
1106 (ispell-set-spellchecker-params) ; Initialize variables and dicts alists
1107 (save-excursion
1108 ;; use the correct dictionary
1109 (flyspell-accept-buffer-local-defs)
1110 (let* ((cursor-location (point))
1111 (flyspell-word (flyspell-get-word following))
1112 start end poss word ispell-filter)
1113 (if (or (eq flyspell-word nil)
1114 (and (functionp flyspell-generic-check-word-predicate)
1115 (not (funcall flyspell-generic-check-word-predicate))))
1117 (progn
1118 ;; destructure return flyspell-word info list.
1119 (setq start (car (cdr flyspell-word))
1120 end (car (cdr (cdr flyspell-word)))
1121 word (car flyspell-word))
1122 ;; before checking in the directory, we check for doublons.
1123 (cond
1124 ((and (or (not (eq ispell-parser 'tex))
1125 (and (> start (point-min))
1126 (not (memq (char-after (1- start)) '(?\} ?\\)))))
1127 flyspell-mark-duplications-flag
1128 (not (catch 'exception
1129 (let ((dict (or ispell-local-dictionary
1130 ispell-dictionary)))
1131 (dolist (except flyspell-mark-duplications-exceptions)
1132 (and (or (null (car except))
1133 (and (stringp dict)
1134 (string-match (car except) dict)))
1135 (member (downcase word) (cdr except))
1136 (throw 'exception t))))))
1137 (save-excursion
1138 (goto-char start)
1139 (let* ((bound
1140 (- start
1141 (- end start)
1142 (- (save-excursion
1143 (skip-chars-backward " \t\n\f")))))
1144 (p (when (>= bound (point-min))
1145 (flyspell-word-search-backward word bound t))))
1146 (and p (/= p start)))))
1147 ;; yes, this is a doublon
1148 (flyspell-highlight-incorrect-region start end 'doublon)
1149 nil)
1150 ((and (eq flyspell-word-cache-start start)
1151 (eq flyspell-word-cache-end end)
1152 (string-equal flyspell-word-cache-word word))
1153 ;; this word had been already checked, we skip
1154 flyspell-word-cache-result)
1155 ((and (eq ispell-parser 'tex)
1156 (flyspell-tex-command-p flyspell-word))
1157 ;; this is a correct word (because a tex command)
1158 (flyspell-unhighlight-at start)
1159 (if (> end start)
1160 (flyspell-unhighlight-at (- end 1)))
1163 ;; we setup the cache
1164 (setq flyspell-word-cache-start start)
1165 (setq flyspell-word-cache-end end)
1166 (setq flyspell-word-cache-word word)
1167 ;; now check spelling of word.
1168 (if (not known-misspelling)
1169 (progn
1170 (ispell-send-string "%\n")
1171 ;; put in verbose mode
1172 (ispell-send-string (concat "^" word "\n"))
1173 ;; we mark the ispell process so it can be killed
1174 ;; when emacs is exited without query
1175 (set-process-query-on-exit-flag ispell-process nil)
1176 ;; Wait until ispell has processed word.
1177 (while (progn
1178 (accept-process-output ispell-process)
1179 (not (string= "" (car ispell-filter)))))
1180 ;; (ispell-send-string "!\n")
1181 ;; back to terse mode.
1182 ;; Remove leading empty element
1183 (setq ispell-filter (cdr ispell-filter))
1184 ;; ispell process should return something after word is sent.
1185 ;; Tag word as valid (i.e., skip) otherwise
1186 (or ispell-filter
1187 (setq ispell-filter '(*)))
1188 (if (consp ispell-filter)
1189 (setq poss (ispell-parse-output (car ispell-filter)))))
1190 ;; Else, this was a known misspelling to begin with, and
1191 ;; we should forge an ispell return value.
1192 (setq poss (list word 1 nil nil)))
1193 (let ((res (cond ((eq poss t)
1194 ;; correct
1195 (setq flyspell-word-cache-result t)
1196 (flyspell-unhighlight-at start)
1197 (if (> end start)
1198 (flyspell-unhighlight-at (- end 1)))
1200 ((and (stringp poss) flyspell-highlight-flag)
1201 ;; correct
1202 (setq flyspell-word-cache-result t)
1203 (flyspell-unhighlight-at start)
1204 (if (> end start)
1205 (flyspell-unhighlight-at (- end 1)))
1207 ((null poss)
1208 (setq flyspell-word-cache-result t)
1209 (flyspell-unhighlight-at start)
1210 (if (> end start)
1211 (flyspell-unhighlight-at (- end 1)))
1213 ((or (and (< flyspell-duplicate-distance 0)
1214 (or (save-excursion
1215 (goto-char start)
1216 (flyspell-word-search-backward
1217 word
1218 (point-min)))
1219 (save-excursion
1220 (goto-char end)
1221 (flyspell-word-search-forward
1222 word
1223 (point-max)))))
1224 (and (> flyspell-duplicate-distance 0)
1225 (or (save-excursion
1226 (goto-char start)
1227 (flyspell-word-search-backward
1228 word
1229 (- start
1230 flyspell-duplicate-distance)))
1231 (save-excursion
1232 (goto-char end)
1233 (flyspell-word-search-forward
1234 word
1235 (+ end
1236 flyspell-duplicate-distance))))))
1237 ;; This is a misspelled word which occurs
1238 ;; twice within flyspell-duplicate-distance.
1239 (setq flyspell-word-cache-result nil)
1240 (if flyspell-highlight-flag
1241 (flyspell-highlight-duplicate-region
1242 start end poss)
1243 (message "duplicate `%s'" word))
1244 nil)
1246 (setq flyspell-word-cache-result nil)
1247 ;; Highlight the location as incorrect,
1248 ;; including offset specified in POSS.
1249 (if flyspell-highlight-flag
1250 (flyspell-highlight-incorrect-region
1251 (if (and (consp poss)
1252 (integerp (nth 1 poss)))
1253 (+ start (nth 1 poss) -1)
1254 start)
1255 end poss)
1256 (flyspell-notify-misspell word poss))
1257 nil))))
1258 ;; return to original location
1259 (goto-char cursor-location)
1260 (if ispell-quit (setq ispell-quit nil))
1261 res))))))))
1263 ;;*---------------------------------------------------------------------*/
1264 ;;* flyspell-math-tex-command-p ... */
1265 ;;* ------------------------------------------------------------- */
1266 ;;* This function uses the texmathp package to check if point */
1267 ;;* is within a TeX math environment. `texmathp' can yield errors */
1268 ;;* if the document is currently not valid TeX syntax. */
1269 ;;*---------------------------------------------------------------------*/
1270 (defun flyspell-math-tex-command-p ()
1271 (when (fboundp 'texmathp)
1272 (if flyspell-check-tex-math-command
1274 (condition-case nil
1275 (texmathp)
1276 (error nil)))))
1278 ;;*---------------------------------------------------------------------*/
1279 ;;* flyspell-tex-command-p ... */
1280 ;;*---------------------------------------------------------------------*/
1281 (defun flyspell-tex-command-p (word)
1282 "Return t if WORD is a TeX command."
1283 (or (save-excursion
1284 (let ((b (car (cdr word))))
1285 (and (re-search-backward "\\\\" (- (point) 100) t)
1286 (or (= (match-end 0) b)
1287 (and (goto-char (match-end 0))
1288 (looking-at flyspell-tex-command-regexp)
1289 (>= (match-end 0) b))))))
1290 (flyspell-math-tex-command-p)))
1292 (defalias 'flyspell-get-casechars 'ispell-get-casechars)
1293 (defalias 'flyspell-get-not-casechars 'ispell-get-not-casechars)
1295 ;;*---------------------------------------------------------------------*/
1296 ;;* flyspell-get-word ... */
1297 ;;*---------------------------------------------------------------------*/
1298 (defun flyspell-get-word (&optional following extra-otherchars)
1299 "Return the word for spell-checking according to Ispell syntax.
1300 Optional argument FOLLOWING non-nil means to get the following
1301 \(rather than preceding) word when the cursor is not over a word.
1302 Optional second argument EXTRA-OTHERCHARS is a regexp of characters
1303 that may be included as part of a word (see `ispell-dictionary-alist')."
1304 (let* ((flyspell-casechars (flyspell-get-casechars))
1305 (flyspell-not-casechars (flyspell-get-not-casechars))
1306 (ispell-otherchars (ispell-get-otherchars))
1307 (ispell-many-otherchars-p (ispell-get-many-otherchars-p))
1308 (word-regexp (concat flyspell-casechars
1309 "+\\("
1310 (if (not (string= "" ispell-otherchars))
1311 (concat ispell-otherchars "?"))
1312 (if extra-otherchars
1313 (concat extra-otherchars "?"))
1314 flyspell-casechars
1315 "+\\)"
1316 (if (or ispell-many-otherchars-p
1317 extra-otherchars)
1318 "*" "?")))
1319 did-it-once prevpt
1320 start end word)
1321 ;; find the word
1322 (if (not (looking-at flyspell-casechars))
1323 (if following
1324 (re-search-forward flyspell-casechars nil t)
1325 (re-search-backward flyspell-casechars nil t)))
1326 ;; move to front of word
1327 (re-search-backward flyspell-not-casechars nil 'start)
1328 (while (and (or (and (not (string= "" ispell-otherchars))
1329 (looking-at ispell-otherchars))
1330 (and extra-otherchars (looking-at extra-otherchars)))
1331 (not (bobp))
1332 (or (not did-it-once)
1333 ispell-many-otherchars-p)
1334 (not (eq prevpt (point))))
1335 (if (and extra-otherchars (looking-at extra-otherchars))
1336 (progn
1337 (backward-char 1)
1338 (if (looking-at flyspell-casechars)
1339 (re-search-backward flyspell-not-casechars nil 'move)))
1340 (setq did-it-once t
1341 prevpt (point))
1342 (backward-char 1)
1343 (if (looking-at flyspell-casechars)
1344 (re-search-backward flyspell-not-casechars nil 'move)
1345 (backward-char -1))))
1346 ;; Now mark the word and save to string.
1347 (if (not (re-search-forward word-regexp nil t))
1349 (progn
1350 (setq start (match-beginning 0)
1351 end (point)
1352 word (buffer-substring-no-properties start end))
1353 (list word start end)))))
1355 ;;*---------------------------------------------------------------------*/
1356 ;;* flyspell-small-region ... */
1357 ;;*---------------------------------------------------------------------*/
1358 (defun flyspell-small-region (beg end)
1359 "Flyspell text between BEG and END."
1360 (save-excursion
1361 (if (> beg end)
1362 (let ((old beg))
1363 (setq beg end)
1364 (setq end old)))
1365 (goto-char beg)
1366 (let ((count 0))
1367 (while (< (point) end)
1368 (if (and flyspell-issue-message-flag (= count 100))
1369 (progn
1370 (message "Spell Checking...%d%%"
1371 (floor (* 100.0 (- (point) beg)) (- end beg)))
1372 (setq count 0))
1373 (setq count (+ 1 count)))
1374 (flyspell-word)
1375 (sit-for 0)
1376 (let ((cur (point)))
1377 (forward-word 1)
1378 (if (and (< (point) end) (> (point) (+ cur 1)))
1379 (backward-char 1)))))
1380 (backward-char 1)
1381 (if flyspell-issue-message-flag (message "Spell Checking completed."))
1382 (flyspell-word)))
1384 ;;*---------------------------------------------------------------------*/
1385 ;;* flyspell-external-ispell-process ... */
1386 ;;*---------------------------------------------------------------------*/
1387 (defvar flyspell-external-ispell-process '()
1388 "The external Flyspell Ispell process.")
1390 ;;*---------------------------------------------------------------------*/
1391 ;;* flyspell-external-ispell-buffer ... */
1392 ;;*---------------------------------------------------------------------*/
1393 (defvar flyspell-external-ispell-buffer '())
1394 (defvar flyspell-large-region-buffer '())
1395 (defvar flyspell-large-region-beg (point-min))
1396 (defvar flyspell-large-region-end (point-max))
1398 ;;*---------------------------------------------------------------------*/
1399 ;;* flyspell-external-point-words ... */
1400 ;;*---------------------------------------------------------------------*/
1401 (defun flyspell-external-point-words ()
1402 "Mark words from a buffer listing incorrect words in order of appearance.
1403 The list of incorrect words should be in `flyspell-external-ispell-buffer'.
1404 \(We finish by killing that buffer and setting the variable to nil.)
1405 The buffer to mark them in is `flyspell-large-region-buffer'."
1406 (let (words-not-found
1407 (ispell-otherchars (ispell-get-otherchars))
1408 (buffer-scan-pos flyspell-large-region-beg)
1409 case-fold-search)
1410 (with-current-buffer flyspell-external-ispell-buffer
1411 (goto-char (point-min))
1412 ;; Loop over incorrect words, in the order they were reported,
1413 ;; which is also the order they appear in the buffer being checked.
1414 (while (re-search-forward "\\([^\n]+\\)\n" nil t)
1415 ;; Bind WORD to the next one.
1416 (let ((word (match-string 1)) (wordpos (point)))
1417 ;; Here there used to be code to see if WORD is the same
1418 ;; as the previous iteration, and count the number of consecutive
1419 ;; identical words, and the loop below would search for that many.
1420 ;; That code seemed to be incorrect, and on principle, should
1421 ;; be unnecessary too. -- rms.
1422 (if flyspell-issue-message-flag
1423 (message "Spell Checking...%d%% [%s]"
1424 (floor (* 100.0 (point)) (point-max))
1425 word))
1426 (with-current-buffer flyspell-large-region-buffer
1427 (goto-char buffer-scan-pos)
1428 (let ((keep t))
1429 ;; Iterate on string search until string is found as word,
1430 ;; not as substring.
1431 (while keep
1432 (if (search-forward word
1433 flyspell-large-region-end t)
1434 (let* ((found-list
1435 (save-excursion
1436 ;; Move back into the match
1437 ;; so flyspell-get-word will find it.
1438 (forward-char -1)
1439 (flyspell-get-word)))
1440 (found (car found-list))
1441 (found-length (length found))
1442 (misspell-length (length word)))
1443 (when (or
1444 ;; Size matches, we really found it.
1445 (= found-length misspell-length)
1446 ;; Matches as part of a boundary-char separated
1447 ;; word.
1448 (member word
1449 (split-string found ispell-otherchars))
1450 ;; Misspelling has higher length than
1451 ;; what flyspell considers the word.
1452 ;; Caused by boundary-chars mismatch.
1453 ;; Validating seems safe.
1454 (< found-length misspell-length)
1455 ;; ispell treats beginning of some TeX
1456 ;; commands as nroff control sequences
1457 ;; and strips them in the list of
1458 ;; misspelled words thus giving a
1459 ;; non-existent word. Skip if ispell
1460 ;; is used, string is a TeX command
1461 ;; (char before beginning of word is
1462 ;; backslash) and none of the previous
1463 ;; conditions match.
1464 (and (not ispell-really-aspell)
1465 (save-excursion
1466 (goto-char (- (nth 1 found-list) 1))
1467 (if (looking-at "[\\]" )
1469 nil))))
1470 (setq keep nil)
1471 (flyspell-word nil t)
1472 ;; Search for next misspelled word will begin from
1473 ;; end of last validated match.
1474 (setq buffer-scan-pos (point))))
1475 ;; Record if misspelling is not found and try new one
1476 (cl-pushnew (concat " -> " word " - "
1477 (int-to-string wordpos))
1478 words-not-found :test #'equal)
1479 (setq keep nil)))))))
1480 ;; we are done
1481 (if flyspell-issue-message-flag (message "Spell Checking completed.")))
1482 ;; Warn about not found misspellings
1483 (dolist (word words-not-found)
1484 (message "%s: word not found" word))
1485 ;; Kill and forget the buffer with the list of incorrect words.
1486 (kill-buffer flyspell-external-ispell-buffer)
1487 (setq flyspell-external-ispell-buffer nil)))
1489 ;;*---------------------------------------------------------------------*/
1490 ;;* flyspell-process-localwords ... */
1491 ;;* ------------------------------------------------------------- */
1492 ;;* This function is used to prevent marking of words explicitly */
1493 ;;* declared correct. */
1494 ;;*---------------------------------------------------------------------*/
1495 (defun flyspell-process-localwords (misspellings-buffer)
1496 (let ((localwords ispell-buffer-session-localwords)
1497 case-fold-search
1498 (ispell-casechars (ispell-get-casechars)))
1499 ;; Get localwords from the original buffer
1500 (save-excursion
1501 (goto-char (point-min))
1502 ;; Localwords parsing copied from ispell.el.
1503 (while (search-forward ispell-words-keyword nil t)
1504 (let ((end (point-at-eol))
1505 string)
1506 ;; buffer-local words separated by a space, and can contain
1507 ;; any character other than a space. Not rigorous enough.
1508 (while (re-search-forward " *\\([^ ]+\\)" end t)
1509 (setq string (buffer-substring-no-properties (match-beginning 1)
1510 (match-end 1)))
1511 ;; This can fail when string contains a word with invalid chars.
1512 ;; Error handling needs to be added between Ispell and Emacs.
1513 (if (and (< 1 (length string))
1514 (equal 0 (string-match ispell-casechars string)))
1515 (push string localwords))))))
1516 ;; Remove localwords matches from misspellings-buffer.
1517 ;; The usual mechanism of communicating the local words to ispell
1518 ;; does not affect the special ispell process used by
1519 ;; flyspell-large-region.
1520 (with-current-buffer misspellings-buffer
1521 (save-excursion
1522 (dolist (word localwords)
1523 (goto-char (point-min))
1524 (let ((regexp (concat "^" word "\n")))
1525 (while (re-search-forward regexp nil t)
1526 (delete-region (match-beginning 0) (match-end 0)))))))))
1528 ;;* ---------------------------------------------------------------
1529 ;;* flyspell-check-region-doublons
1530 ;;* ---------------------------------------------------------------
1531 (defun flyspell-check-region-doublons (beg end)
1532 "Check for adjacent duplicated words (doublons) in the given region."
1533 (save-excursion
1534 (goto-char beg)
1535 (flyspell-word) ; Make sure current word is checked
1536 (backward-word 1)
1537 (while (and (< (point) end)
1538 (re-search-forward "\\<\\(\\w+\\)\\>[ \n\t\f]+\\1\\>"
1539 end 'move))
1540 (flyspell-word)
1541 (backward-word 1))
1542 (flyspell-word)))
1544 ;;*---------------------------------------------------------------------*/
1545 ;;* flyspell-large-region ... */
1546 ;;*---------------------------------------------------------------------*/
1547 (defun flyspell-large-region (beg end)
1548 (let* ((curbuf (current-buffer))
1549 (buffer (get-buffer-create "*flyspell-region*")))
1550 (setq flyspell-external-ispell-buffer buffer)
1551 (setq flyspell-large-region-buffer curbuf)
1552 (setq flyspell-large-region-beg beg)
1553 (setq flyspell-large-region-end end)
1554 (flyspell-accept-buffer-local-defs)
1555 (set-buffer buffer)
1556 (erase-buffer)
1557 ;; this is done, we can start checking...
1558 (if flyspell-issue-message-flag (message "Checking region..."))
1559 (set-buffer curbuf)
1560 (ispell-set-spellchecker-params) ; Initialize variables and dicts alists
1561 ;; Local dictionary becomes the global dictionary in use.
1562 (setq ispell-current-dictionary
1563 (or ispell-local-dictionary ispell-dictionary))
1564 (setq ispell-current-personal-dictionary
1565 (or ispell-local-pdict ispell-personal-dictionary))
1566 (let ((args (ispell-get-ispell-args))
1567 (encoding (ispell-get-coding-system))
1569 (if (and ispell-current-dictionary ; use specified dictionary
1570 (not (member "-d" args))) ; only define if not overridden
1571 (setq args
1572 (append (list "-d" ispell-current-dictionary) args)))
1573 (if ispell-current-personal-dictionary ; use specified pers dict
1574 (setq args
1575 (append args
1576 (list "-p"
1577 (expand-file-name
1578 ispell-current-personal-dictionary)))))
1580 ;; Check for extended character mode
1581 (let ((extended-char-mode (ispell-get-extended-character-mode)))
1582 (and extended-char-mode ; ~ extended character mode
1583 (string-match "[^~]+$" extended-char-mode)
1584 (cl-pushnew (concat "-T" (match-string 0 extended-char-mode))
1585 args :test #'equal)))
1587 ;; Add ispell-extra-args
1588 (setq args (append args ispell-extra-args))
1590 ;; If we are using recent aspell or hunspell, make sure we use the right encoding
1591 ;; for communication. ispell or older aspell/hunspell does not support this
1592 (if ispell-encoding8-command
1593 (setq args
1594 (append args
1595 (if ispell-really-hunspell
1596 (list ispell-encoding8-command
1597 (upcase (symbol-name encoding)))
1598 (list (concat ispell-encoding8-command
1599 (symbol-name encoding)))))))
1601 (let ((process-coding-system-alist (list (cons "\\.*" encoding))))
1602 (setq c (apply 'ispell-call-process-region beg
1604 ispell-program-name
1606 buffer
1608 (if ispell-really-aspell "list" "-l")
1609 args)))
1610 (if (eq c 0)
1611 (progn
1612 (flyspell-process-localwords buffer)
1613 (with-current-buffer curbuf
1614 (flyspell-delete-region-overlays beg end)
1615 (flyspell-check-region-doublons beg end))
1616 (flyspell-external-point-words))
1617 (error "Can't check region")))))
1619 ;;*---------------------------------------------------------------------*/
1620 ;;* flyspell-region ... */
1621 ;;* ------------------------------------------------------------- */
1622 ;;* Because `ispell -a' is too slow, it is not possible to use */
1623 ;;* it on large region. Then, when ispell is invoked on a large */
1624 ;;* text region, a new `ispell -l' process is spawned. The */
1625 ;;* pointed out words are then searched in the region a checked with */
1626 ;;* regular flyspell means. */
1627 ;;*---------------------------------------------------------------------*/
1628 ;;;###autoload
1629 (defun flyspell-region (beg end)
1630 "Flyspell text between BEG and END."
1631 (interactive "r")
1632 (ispell-set-spellchecker-params) ; Initialize variables and dicts alists
1633 (if (= beg end)
1635 (save-excursion
1636 (if (> beg end)
1637 (let ((old beg))
1638 (setq beg end)
1639 (setq end old)))
1640 (if (and flyspell-large-region (> (- end beg) flyspell-large-region))
1641 (flyspell-large-region beg end)
1642 (flyspell-small-region beg end)))))
1644 ;;*---------------------------------------------------------------------*/
1645 ;;* flyspell-buffer ... */
1646 ;;*---------------------------------------------------------------------*/
1647 ;;;###autoload
1648 (defun flyspell-buffer ()
1649 "Flyspell whole buffer."
1650 (interactive)
1651 (flyspell-region (point-min) (point-max)))
1653 ;;*---------------------------------------------------------------------*/
1654 ;;* old next error position ... */
1655 ;;*---------------------------------------------------------------------*/
1656 (defvar flyspell-old-buffer-error nil)
1657 (defvar flyspell-old-pos-error nil)
1659 ;;*---------------------------------------------------------------------*/
1660 ;;* flyspell-goto-next-error ... */
1661 ;;*---------------------------------------------------------------------*/
1662 (defun flyspell-goto-next-error ()
1663 "Go to the next previously detected error.
1664 In general FLYSPELL-GOTO-NEXT-ERROR must be used after
1665 FLYSPELL-BUFFER."
1666 (interactive)
1667 (let ((pos (point))
1668 (max (point-max)))
1669 (if (and (eq (current-buffer) flyspell-old-buffer-error)
1670 (eq pos flyspell-old-pos-error))
1671 (progn
1672 (if (= flyspell-old-pos-error max)
1673 ;; goto beginning of buffer
1674 (progn
1675 (message "Restarting from beginning of buffer")
1676 (goto-char (point-min)))
1677 (forward-word 1))
1678 (setq pos (point))))
1679 ;; seek the next error
1680 (while (and (< pos max)
1681 (let ((ovs (overlays-at pos))
1682 (r '()))
1683 (while (and (not r) (consp ovs))
1684 (if (flyspell-overlay-p (car ovs))
1685 (setq r t)
1686 (setq ovs (cdr ovs))))
1687 (not r)))
1688 (setq pos (1+ pos)))
1689 ;; save the current location for next invocation
1690 (setq flyspell-old-pos-error pos)
1691 (setq flyspell-old-buffer-error (current-buffer))
1692 (goto-char pos)
1693 (if (= pos max)
1694 (message "No more miss-spelled word!"))))
1696 ;;*---------------------------------------------------------------------*/
1697 ;;* flyspell-overlay-p ... */
1698 ;;*---------------------------------------------------------------------*/
1699 (defun flyspell-overlay-p (o)
1700 "Return true if O is an overlay used by flyspell."
1701 (and (overlayp o) (overlay-get o 'flyspell-overlay)))
1703 ;;*---------------------------------------------------------------------*/
1704 ;;* flyspell-delete-region-overlays, flyspell-delete-all-overlays */
1705 ;;* ------------------------------------------------------------- */
1706 ;;* Remove overlays introduced by flyspell. */
1707 ;;*---------------------------------------------------------------------*/
1708 (defun flyspell-delete-region-overlays (beg end)
1709 "Delete overlays used by flyspell in a given region."
1710 (remove-overlays beg end 'flyspell-overlay t))
1712 (defun flyspell-delete-all-overlays ()
1713 "Delete all the overlays used by flyspell."
1714 (flyspell-delete-region-overlays (point-min) (point-max)))
1716 ;;*---------------------------------------------------------------------*/
1717 ;;* flyspell-unhighlight-at ... */
1718 ;;*---------------------------------------------------------------------*/
1719 (defun flyspell-unhighlight-at (pos)
1720 "Remove the flyspell overlay that are located at POS."
1721 (if flyspell-persistent-highlight
1722 (let ((overlays (overlays-at pos)))
1723 (while (consp overlays)
1724 (if (flyspell-overlay-p (car overlays))
1725 (delete-overlay (car overlays)))
1726 (setq overlays (cdr overlays))))
1727 (if (flyspell-overlay-p flyspell-overlay)
1728 (delete-overlay flyspell-overlay))))
1730 ;;*---------------------------------------------------------------------*/
1731 ;;* flyspell-properties-at-p ... */
1732 ;;* ------------------------------------------------------------- */
1733 ;;* Is there an highlight properties at position pos? */
1734 ;;*---------------------------------------------------------------------*/
1735 (defun flyspell-properties-at-p (pos)
1736 "Return t if there is a text property at POS, not counting `local-map'.
1737 If variable `flyspell-highlight-properties' is set to nil,
1738 text with properties are not checked. This function is used to discover
1739 if the character at POS has any other property."
1740 (let ((prop (text-properties-at pos))
1741 (keep t))
1742 (while (and keep (consp prop))
1743 (if (and (eq (car prop) 'local-map) (consp (cdr prop)))
1744 (setq prop (cdr (cdr prop)))
1745 (setq keep nil)))
1746 (consp prop)))
1748 ;;*---------------------------------------------------------------------*/
1749 ;;* make-flyspell-overlay ... */
1750 ;;*---------------------------------------------------------------------*/
1751 (defun make-flyspell-overlay (beg end face mouse-face)
1752 "Allocate an overlay to highlight an incorrect word.
1753 BEG and END specify the range in the buffer of that word.
1754 FACE and MOUSE-FACE specify the `face' and `mouse-face' properties
1755 for the overlay."
1756 (let ((overlay (make-overlay beg end nil t nil)))
1757 (overlay-put overlay 'face face)
1758 (overlay-put overlay 'mouse-face mouse-face)
1759 (overlay-put overlay 'flyspell-overlay t)
1760 (overlay-put overlay 'evaporate t)
1761 (overlay-put overlay 'help-echo "mouse-2: correct word at point")
1762 (overlay-put overlay 'keymap flyspell-mouse-map)
1763 (when (eq face 'flyspell-incorrect)
1764 (and (stringp flyspell-before-incorrect-word-string)
1765 (overlay-put overlay 'before-string
1766 flyspell-before-incorrect-word-string))
1767 (and (stringp flyspell-after-incorrect-word-string)
1768 (overlay-put overlay 'after-string
1769 flyspell-after-incorrect-word-string)))
1770 overlay))
1772 ;;*---------------------------------------------------------------------*/
1773 ;;* flyspell-highlight-incorrect-region ... */
1774 ;;*---------------------------------------------------------------------*/
1775 (defun flyspell-highlight-incorrect-region (beg end poss)
1776 "Set up an overlay on a misspelled word, in the buffer from BEG to END.
1777 POSS is usually a list of possible spelling/correction lists,
1778 as returned by `ispell-parse-output'.
1779 It can also be the symbol `doublon', in the case where the word
1780 is itself incorrect, but suspiciously repeated."
1781 (let ((inhibit-read-only t))
1782 (unless (run-hook-with-args-until-success
1783 'flyspell-incorrect-hook beg end poss)
1784 (if (or flyspell-highlight-properties
1785 (not (flyspell-properties-at-p beg)))
1786 (progn
1787 ;; we cleanup all the overlay that are in the region, not
1788 ;; beginning at the word start position
1789 (if (< (1+ beg) end)
1790 (let ((os (overlays-in (1+ beg) end)))
1791 (while (consp os)
1792 (if (flyspell-overlay-p (car os))
1793 (delete-overlay (car os)))
1794 (setq os (cdr os)))))
1795 ;; we cleanup current overlay at the same position
1796 (flyspell-unhighlight-at beg)
1797 ;; now we can use a new overlay
1798 (setq flyspell-overlay
1799 (make-flyspell-overlay
1800 beg end
1801 (if (eq poss 'doublon) 'flyspell-duplicate 'flyspell-incorrect)
1802 'highlight)))))))
1804 ;;*---------------------------------------------------------------------*/
1805 ;;* flyspell-highlight-duplicate-region ... */
1806 ;;*---------------------------------------------------------------------*/
1807 (defun flyspell-highlight-duplicate-region (beg end poss)
1808 "Set up an overlay on a duplicate misspelled word, in the buffer from BEG to END.
1809 POSS is a list of possible spelling/correction lists,
1810 as returned by `ispell-parse-output'."
1811 (let ((inhibit-read-only t))
1812 (unless (run-hook-with-args-until-success
1813 'flyspell-incorrect-hook beg end poss)
1814 (if (or flyspell-highlight-properties
1815 (not (flyspell-properties-at-p beg)))
1816 (progn
1817 ;; we cleanup current overlay at the same position
1818 (flyspell-unhighlight-at beg)
1819 ;; now we can use a new overlay
1820 (setq flyspell-overlay
1821 (make-flyspell-overlay beg end
1822 'flyspell-duplicate
1823 'highlight)))))))
1825 ;;*---------------------------------------------------------------------*/
1826 ;;* flyspell-auto-correct-cache ... */
1827 ;;*---------------------------------------------------------------------*/
1828 (defvar flyspell-auto-correct-pos nil)
1829 (defvar flyspell-auto-correct-region nil)
1830 (defvar flyspell-auto-correct-ring nil)
1831 (defvar flyspell-auto-correct-word nil)
1832 (make-variable-buffer-local 'flyspell-auto-correct-pos)
1833 (make-variable-buffer-local 'flyspell-auto-correct-region)
1834 (make-variable-buffer-local 'flyspell-auto-correct-ring)
1835 (make-variable-buffer-local 'flyspell-auto-correct-word)
1837 ;;*---------------------------------------------------------------------*/
1838 ;;* flyspell-check-previous-highlighted-word ... */
1839 ;;*---------------------------------------------------------------------*/
1840 (defun flyspell-check-previous-highlighted-word (&optional arg)
1841 "Correct the closest previous word that is highlighted as misspelled.
1842 This function scans for a word which starts before point that has been
1843 highlighted by Flyspell as misspelled. If it finds one, it proposes
1844 a replacement for that word. With prefix arg N, check the Nth word
1845 before point that's highlighted as misspelled."
1846 (interactive "P")
1847 (let ((pos1 (point))
1848 (pos (point))
1849 (arg (if (or (not (numberp arg)) (< arg 1)) 1 arg))
1850 ov ovs)
1851 (if (catch 'exit
1852 (while (and (setq pos (previous-overlay-change pos))
1853 (not (= pos pos1)))
1854 (setq pos1 pos)
1855 (if (> pos (point-min))
1856 (progn
1857 (setq ovs (overlays-at pos))
1858 (while (consp ovs)
1859 (setq ov (car ovs))
1860 (setq ovs (cdr ovs))
1861 (if (and (flyspell-overlay-p ov)
1862 (= 0 (setq arg (1- arg))))
1863 (throw 'exit t)))))))
1864 (save-excursion
1865 (goto-char pos)
1866 (ispell-word)
1867 (setq flyspell-word-cache-word nil) ;; Force flyspell-word re-check
1868 (flyspell-word))
1869 (error "No word to correct before point"))))
1871 ;;*---------------------------------------------------------------------*/
1872 ;;* flyspell-display-next-corrections ... */
1873 ;;*---------------------------------------------------------------------*/
1874 (defun flyspell-display-next-corrections (corrections)
1875 (let ((string "Corrections:")
1876 (l corrections)
1877 (pos '()))
1878 (while (< (length string) 80)
1879 (if (equal (car l) flyspell-auto-correct-word)
1880 (setq pos (cons (+ 1 (length string)) pos)))
1881 (setq string (concat string " " (car l)))
1882 (setq l (cdr l)))
1883 (while (consp pos)
1884 (let ((num (car pos)))
1885 (put-text-property num
1886 (+ num (length flyspell-auto-correct-word))
1887 'face 'flyspell-incorrect
1888 string))
1889 (setq pos (cdr pos)))
1890 (if (fboundp 'display-message)
1891 (display-message 'no-log string)
1892 (message "%s" string))))
1894 ;;*---------------------------------------------------------------------*/
1895 ;;* flyspell-abbrev-table ... */
1896 ;;*---------------------------------------------------------------------*/
1897 (defun flyspell-abbrev-table ()
1898 (if flyspell-use-global-abbrev-table-p
1899 global-abbrev-table
1900 (or local-abbrev-table global-abbrev-table)))
1902 ;;*---------------------------------------------------------------------*/
1903 ;;* flyspell-define-abbrev ... */
1904 ;;*---------------------------------------------------------------------*/
1905 (defun flyspell-define-abbrev (name expansion)
1906 (let ((table (flyspell-abbrev-table)))
1907 (when table
1908 (define-abbrev table (downcase name) expansion))))
1910 ;;*---------------------------------------------------------------------*/
1911 ;;* flyspell-auto-correct-word ... */
1912 ;;*---------------------------------------------------------------------*/
1913 (defun flyspell-auto-correct-word ()
1914 "Correct the current word.
1915 This command proposes various successive corrections for the current word."
1916 (interactive)
1917 ;; If we are not in the construct where flyspell should be active,
1918 ;; invoke the original binding of M-TAB, if that was recorded.
1919 (if (and (local-variable-p 'flyspell--prev-meta-tab-binding)
1920 (commandp flyspell--prev-meta-tab-binding t)
1921 (functionp flyspell-generic-check-word-predicate)
1922 (not (funcall flyspell-generic-check-word-predicate))
1923 (equal (where-is-internal 'flyspell-auto-correct-word nil t)
1924 [?\M-\t]))
1925 (call-interactively flyspell--prev-meta-tab-binding)
1926 (let ((pos (point))
1927 (old-max (point-max)))
1928 ;; Use the correct dictionary.
1929 (flyspell-accept-buffer-local-defs)
1930 (if (and (eq flyspell-auto-correct-pos pos)
1931 (consp flyspell-auto-correct-region))
1932 ;; We have already been using the function at the same location.
1933 (let* ((start (car flyspell-auto-correct-region))
1934 (len (cdr flyspell-auto-correct-region)))
1935 (flyspell-unhighlight-at start)
1936 (delete-region start (+ start len))
1937 (setq flyspell-auto-correct-ring (cdr flyspell-auto-correct-ring))
1938 (let* ((word (car flyspell-auto-correct-ring))
1939 (len (length word)))
1940 (rplacd flyspell-auto-correct-region len)
1941 (goto-char start)
1942 (if flyspell-abbrev-p
1943 (if (flyspell-already-abbrevp (flyspell-abbrev-table)
1944 flyspell-auto-correct-word)
1945 (flyspell-change-abbrev (flyspell-abbrev-table)
1946 flyspell-auto-correct-word
1947 word)
1948 (flyspell-define-abbrev flyspell-auto-correct-word word)))
1949 (funcall flyspell-insert-function word)
1950 (flyspell-word)
1951 (flyspell-display-next-corrections flyspell-auto-correct-ring))
1952 (flyspell-adjust-cursor-point pos (point) old-max)
1953 (setq flyspell-auto-correct-pos (point)))
1954 ;; Fetch the word to be checked.
1955 (let ((word (flyspell-get-word)))
1956 (if (consp word)
1957 (let ((start (car (cdr word)))
1958 (end (car (cdr (cdr word))))
1959 (word (car word))
1960 poss ispell-filter)
1961 (setq flyspell-auto-correct-word word)
1962 ;; Now check spelling of word..
1963 (ispell-send-string "%\n") ;Put in verbose mode.
1964 (ispell-send-string (concat "^" word "\n"))
1965 ;; Wait until ispell has processed word.
1966 (while (progn
1967 (accept-process-output ispell-process)
1968 (not (string= "" (car ispell-filter)))))
1969 ;; Remove leading empty element.
1970 (setq ispell-filter (cdr ispell-filter))
1971 ;; Ispell process should return something after word is sent.
1972 ;; Tag word as valid (i.e., skip) otherwise.
1973 (or ispell-filter
1974 (setq ispell-filter '(*)))
1975 (if (consp ispell-filter)
1976 (setq poss (ispell-parse-output (car ispell-filter))))
1977 (cond
1978 ((or (eq poss t) (stringp poss))
1979 ;; Don't correct word.
1981 ((null poss)
1982 ;; Ispell error.
1983 (error "Ispell: error in Ispell process"))
1985 ;; The word is incorrect, we have to propose a replacement.
1986 (let ((replacements (flyspell-sort (car (cdr (cdr poss)))
1987 word)))
1988 (setq flyspell-auto-correct-region nil)
1989 (if (consp replacements)
1990 (progn
1991 (let ((replace (car replacements)))
1992 (let ((new-word replace))
1993 (if (not (equal new-word (car poss)))
1994 (progn
1995 ;; the save the current replacements
1996 (setq flyspell-auto-correct-region
1997 (cons start (length new-word)))
1998 (let ((l replacements))
1999 (while (consp (cdr l))
2000 (setq l (cdr l)))
2001 (rplacd l (cons (car poss) replacements)))
2002 (setq flyspell-auto-correct-ring
2003 replacements)
2004 (flyspell-unhighlight-at start)
2005 (delete-region start end)
2006 (funcall flyspell-insert-function new-word)
2007 (if flyspell-abbrev-p
2008 (if (flyspell-already-abbrevp
2009 (flyspell-abbrev-table) word)
2010 (flyspell-change-abbrev
2011 (flyspell-abbrev-table)
2012 word
2013 new-word)
2014 (flyspell-define-abbrev word
2015 new-word)))
2016 (flyspell-word)
2017 (flyspell-display-next-corrections
2018 (cons new-word flyspell-auto-correct-ring))
2019 (flyspell-adjust-cursor-point pos
2020 (point)
2021 old-max))))))))))
2022 (setq flyspell-auto-correct-pos (point))
2023 (ispell-pdict-save t))))))))
2025 ;;*---------------------------------------------------------------------*/
2026 ;;* flyspell-auto-correct-previous-pos ... */
2027 ;;*---------------------------------------------------------------------*/
2028 (defvar flyspell-auto-correct-previous-pos nil
2029 "Holds the start of the first incorrect word before point.")
2031 ;;*---------------------------------------------------------------------*/
2032 ;;* flyspell-auto-correct-previous-hook ... */
2033 ;;*---------------------------------------------------------------------*/
2034 (defun flyspell-auto-correct-previous-hook ()
2035 "Hook to track successive calls to `flyspell-auto-correct-previous-word'.
2036 Sets `flyspell-auto-correct-previous-pos' to nil"
2037 (interactive)
2038 (remove-hook 'pre-command-hook (function flyspell-auto-correct-previous-hook) t)
2039 (unless (eq this-command (function flyspell-auto-correct-previous-word))
2040 (setq flyspell-auto-correct-previous-pos nil)))
2042 ;;*---------------------------------------------------------------------*/
2043 ;;* flyspell-auto-correct-previous-word ... */
2044 ;;*---------------------------------------------------------------------*/
2045 (defun flyspell-auto-correct-previous-word (position)
2046 "Auto correct the first misspelled word that occurs before point.
2047 But don't look beyond what's visible on the screen."
2048 (interactive "d")
2050 (let ((top (window-start))
2051 (bot (window-end)))
2052 (save-excursion
2053 (save-restriction
2054 (narrow-to-region top bot)
2055 (overlay-recenter (point))
2057 (add-hook 'pre-command-hook
2058 (function flyspell-auto-correct-previous-hook) t t)
2060 (unless flyspell-auto-correct-previous-pos
2061 ;; only reset if a new overlay exists
2062 (setq flyspell-auto-correct-previous-pos nil)
2064 (let ((overlay-list (overlays-in (point-min) position))
2065 (new-overlay 'dummy-value))
2067 ;; search for previous (new) flyspell overlay
2068 (while (and new-overlay
2069 (or (not (flyspell-overlay-p new-overlay))
2070 ;; check if its face has changed
2071 (not (eq (get-char-property
2072 (overlay-start new-overlay) 'face)
2073 'flyspell-incorrect))))
2074 (setq new-overlay (car-safe overlay-list))
2075 (setq overlay-list (cdr-safe overlay-list)))
2077 ;; if nothing new exits new-overlay should be nil
2078 (if new-overlay ;; the length of the word may change so go to the start
2079 (setq flyspell-auto-correct-previous-pos
2080 (overlay-start new-overlay)))))
2082 (when flyspell-auto-correct-previous-pos
2083 (save-excursion
2084 (goto-char flyspell-auto-correct-previous-pos)
2085 (let ((ispell-following-word t)) ;; point is at start
2086 (if (numberp flyspell-auto-correct-previous-pos)
2087 (goto-char flyspell-auto-correct-previous-pos))
2088 (flyspell-auto-correct-word))
2089 ;; the point may have moved so reset this
2090 (setq flyspell-auto-correct-previous-pos (point))))))))
2092 ;;*---------------------------------------------------------------------*/
2093 ;;* flyspell-correct-word ... */
2094 ;;*---------------------------------------------------------------------*/
2096 (defun flyspell-correct-word (event)
2097 "Pop up a menu of possible corrections for a misspelled word.
2098 The word checked is the word at the mouse position."
2099 (interactive "e")
2100 (let ((save (point)))
2101 (mouse-set-point event)
2102 (flyspell-correct-word-before-point event save)))
2104 (defun flyspell-correct-word-before-point (&optional event opoint)
2105 "Pop up a menu of possible corrections for misspelled word before point.
2106 If EVENT is non-nil, it is the mouse event that invoked this operation;
2107 that controls where to put the menu.
2108 If OPOINT is non-nil, restore point there after adjusting it for replacement."
2109 (interactive)
2110 ;; use the correct dictionary
2111 (flyspell-accept-buffer-local-defs)
2112 (or opoint (setq opoint (point)))
2113 (let ((cursor-location (point))
2114 (word (flyspell-get-word)))
2115 (if (consp word)
2116 (let ((start (car (cdr word)))
2117 (end (car (cdr (cdr word))))
2118 (word (car word))
2119 poss ispell-filter)
2120 ;; now check spelling of word.
2121 (ispell-send-string "%\n") ;put in verbose mode
2122 (ispell-send-string (concat "^" word "\n"))
2123 ;; wait until ispell has processed word
2124 (while (progn
2125 (accept-process-output ispell-process)
2126 (not (string= "" (car ispell-filter)))))
2127 ;; Remove leading empty element
2128 (setq ispell-filter (cdr ispell-filter))
2129 ;; ispell process should return something after word is sent.
2130 ;; Tag word as valid (i.e., skip) otherwise
2131 (or ispell-filter
2132 (setq ispell-filter '(*)))
2133 (if (consp ispell-filter)
2134 (setq poss (ispell-parse-output (car ispell-filter))))
2135 (cond
2136 ((or (eq poss t) (stringp poss))
2137 ;; don't correct word
2139 ((null poss)
2140 ;; ispell error
2141 (error "Ispell: error in Ispell process"))
2143 ;; The word is incorrect, we have to propose a replacement.
2144 (flyspell-do-correct (flyspell-emacs-popup event poss word)
2145 poss word cursor-location start end opoint)))
2146 (ispell-pdict-save t)))))
2148 ;;*---------------------------------------------------------------------*/
2149 ;;* flyspell-do-correct ... */
2150 ;;*---------------------------------------------------------------------*/
2151 (defun flyspell-do-correct (replace poss word cursor-location start end save)
2152 "The popup menu callback."
2153 (cond ((eq replace 'ignore)
2154 (goto-char save)
2155 nil)
2156 ((eq replace 'save)
2157 (goto-char save)
2158 (ispell-send-string (concat "*" word "\n"))
2159 (ispell-send-string "#\n")
2160 (flyspell-unhighlight-at cursor-location)
2161 (setq ispell-pdict-modified-p '(t)))
2162 ((or (eq replace 'buffer) (eq replace 'session))
2163 (ispell-send-string (concat "@" word "\n"))
2164 (add-to-list 'ispell-buffer-session-localwords word)
2165 (or ispell-buffer-local-name ; session localwords might conflict
2166 (setq ispell-buffer-local-name (buffer-name)))
2167 (flyspell-unhighlight-at cursor-location)
2168 (if (null ispell-pdict-modified-p)
2169 (setq ispell-pdict-modified-p
2170 (list ispell-pdict-modified-p)))
2171 (goto-char save)
2172 (if (eq replace 'buffer)
2173 (ispell-add-per-file-word-list word)))
2174 (replace
2175 (flyspell-unhighlight-at cursor-location)
2176 (let ((old-max (point-max))
2177 (new-word (if (atom replace)
2178 replace
2179 (car replace)))
2180 (cursor-location (+ (- (length word) (- end start))
2181 cursor-location)))
2182 (unless (equal new-word (car poss))
2183 (delete-region start end)
2184 (goto-char start)
2185 (funcall flyspell-insert-function new-word)
2186 (if flyspell-abbrev-p
2187 (flyspell-define-abbrev word new-word)))
2188 (flyspell-adjust-cursor-point save cursor-location old-max)))
2190 (goto-char save)
2191 nil)))
2193 ;;*---------------------------------------------------------------------*/
2194 ;;* flyspell-adjust-cursor-point ... */
2195 ;;*---------------------------------------------------------------------*/
2196 (defun flyspell-adjust-cursor-point (save cursor-location old-max)
2197 (if (>= save cursor-location)
2198 (let ((new-pos (+ save (- (point-max) old-max))))
2199 (goto-char (cond
2200 ((< new-pos (point-min))
2201 (point-min))
2202 ((> new-pos (point-max))
2203 (point-max))
2204 (t new-pos))))
2205 (goto-char save)))
2207 ;;*---------------------------------------------------------------------*/
2208 ;;* flyspell-emacs-popup ... */
2209 ;;*---------------------------------------------------------------------*/
2210 (defun flyspell-emacs-popup (event poss word)
2211 "The Emacs popup menu."
2212 (if (and (not event)
2213 (display-mouse-p))
2214 (let* ((mouse-pos (mouse-position))
2215 (mouse-pos (if (nth 1 mouse-pos)
2216 mouse-pos
2217 (set-mouse-position (car mouse-pos)
2218 (/ (frame-width) 2) 2)
2219 (mouse-position))))
2220 (setq event (list (list (car (cdr mouse-pos))
2221 (1+ (cdr (cdr mouse-pos))))
2222 (car mouse-pos)))))
2223 (let* ((corrects (flyspell-sort (car (cdr (cdr poss))) word))
2224 (cor-menu (if (consp corrects)
2225 (mapcar (lambda (correct)
2226 (list correct correct))
2227 corrects)
2228 '()))
2229 (affix (car (cdr (cdr (cdr poss)))))
2230 show-affix-info
2231 (base-menu (let ((save (if (and (consp affix) show-affix-info)
2232 (list
2233 (list (concat "Save affix: " (car affix))
2234 'save)
2235 '("Accept (session)" session)
2236 '("Accept (buffer)" buffer))
2237 '(("Save word" save)
2238 ("Accept (session)" session)
2239 ("Accept (buffer)" buffer)))))
2240 (if (consp cor-menu)
2241 (append cor-menu (cons "" save))
2242 save)))
2243 (menu (cons "flyspell correction menu" base-menu)))
2244 (car (x-popup-menu event
2245 (list (format "%s [%s]" word (or ispell-local-dictionary
2246 ispell-dictionary))
2247 menu)))))
2249 ;;*---------------------------------------------------------------------*/
2250 ;;* Some example functions for real autocorrecting */
2251 ;;*---------------------------------------------------------------------*/
2252 (defun flyspell-maybe-correct-transposition (beg end poss)
2253 "Check replacements for transposed characters.
2255 If the text between BEG and END is equal to a correction suggested by
2256 Ispell, after transposing two adjacent characters, correct the text,
2257 and return t.
2259 The third arg POSS is either the symbol `doublon' or a list of
2260 possible corrections as returned by `ispell-parse-output'.
2262 This function is meant to be added to `flyspell-incorrect-hook'."
2263 (when (consp poss)
2264 (catch 'done
2265 (let ((str (buffer-substring beg end))
2266 (i 0) (len (- end beg)) tmp)
2267 (while (< (1+ i) len)
2268 (setq tmp (aref str i))
2269 (aset str i (aref str (1+ i)))
2270 (aset str (1+ i) tmp)
2271 (when (member str (nth 2 poss))
2272 (save-excursion
2273 (goto-char (+ beg i 1))
2274 (transpose-chars 1))
2275 (throw 'done t))
2276 (setq tmp (aref str i))
2277 (aset str i (aref str (1+ i)))
2278 (aset str (1+ i) tmp)
2279 (setq i (1+ i))))
2280 nil)))
2282 (defun flyspell-maybe-correct-doubling (beg end poss)
2283 "Check replacements for doubled characters.
2285 If the text between BEG and END is equal to a correction suggested by
2286 Ispell, after removing a pair of doubled characters, correct the text,
2287 and return t.
2289 The third arg POSS is either the symbol `doublon' or a list of
2290 possible corrections as returned by `ispell-parse-output'.
2292 This function is meant to be added to `flyspell-incorrect-hook'."
2293 (when (consp poss)
2294 (catch 'done
2295 (let ((str (buffer-substring beg end))
2296 (i 0) (len (- end beg)))
2297 (while (< (1+ i) len)
2298 (when (and (= (aref str i) (aref str (1+ i)))
2299 (member (concat (substring str 0 (1+ i))
2300 (substring str (+ i 2)))
2301 (nth 2 poss)))
2302 (goto-char (+ beg i))
2303 (delete-char 1)
2304 (throw 'done t))
2305 (setq i (1+ i))))
2306 nil)))
2308 ;;*---------------------------------------------------------------------*/
2309 ;;* flyspell-already-abbrevp ... */
2310 ;;*---------------------------------------------------------------------*/
2311 (defun flyspell-already-abbrevp (table word)
2312 (let ((sym (abbrev-symbol word table)))
2313 (and sym (symbolp sym))))
2315 ;;*---------------------------------------------------------------------*/
2316 ;;* flyspell-change-abbrev ... */
2317 ;;*---------------------------------------------------------------------*/
2318 (defun flyspell-change-abbrev (table old new)
2319 (set (abbrev-symbol old table) new))
2321 (provide 'flyspell)
2323 ;;; flyspell.el ends here