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;; Spelling correction interface for Emacs.
;; Copyright (C) 1985 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 1, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
(defvar spell-command "spell"
"*Command to run the spell program.")
(defvar spell-filter nil
"*Filter function to process text before passing it to spell program.
This function might remove text-processor commands.
nil means don't alter the text before checking it.")
(defun spell-buffer ()
"Check spelling of every word in the buffer.
For each incorrect word, you are asked for the correct spelling
and then put into a query-replace to fix some or all occurrences.
If you do not want to change a word, just give the same word
as its \"correct\" spelling; then the query replace is skipped."
(interactive)
(spell-region (point-min) (point-max) "buffer"))
(defun spell-word ()
"Check spelling of word at or before point.
If it is not correct, ask user for the correct spelling
and query-replace the entire buffer to substitute it."
(interactive)
(let (beg end spell-filter)
(save-excursion
(if (not (looking-at "\\<"))
(forward-word -1))
(setq beg (point))
(forward-word 1)
(setq end (point)))
(spell-region beg end (buffer-substring beg end))))
(defun spell-region (start end &optional description)
"Like spell-buffer but applies only to region.
Used in a program, applies from START to END.
DESCRIPTION is an optional string naming the unit being checked:
for example, \"word\"."
(interactive "r")
(let ((filter spell-filter)
(buf (get-buffer-create " *temp*")))
(save-excursion
(set-buffer buf)
(widen)
(erase-buffer))
(message "Checking spelling of %s..." (or description "region"))
(if (and (null filter) (= ?\n (char-after (1- end))))
(if (string= "spell" spell-command)
(call-process-region start end "spell" nil buf)
(call-process-region start end shell-file-name
nil buf nil "-c" spell-command))
(let ((oldbuf (current-buffer)))
(save-excursion
(set-buffer buf)
(insert-buffer-substring oldbuf start end)
(or (bolp) (insert ?\n))
(if filter (funcall filter))
(if (string= "spell" spell-command)
(call-process-region (point-min) (point-max) "spell" t buf)
(call-process-region (point-min) (point-max) shell-file-name
t buf nil "-c" spell-command)))))
(message "Checking spelling of %s...%s"
(or description "region")
(if (save-excursion
(set-buffer buf)
(> (buffer-size) 0))
"not correct"
"correct"))
(let (word newword
(case-fold-search t)
(case-replace t))
(while (save-excursion
(set-buffer buf)
(> (buffer-size) 0))
(save-excursion
(set-buffer buf)
(goto-char (point-min))
(setq word (downcase
(buffer-substring (point)
(progn (end-of-line) (point)))))
(forward-char 1)
(delete-region (point-min) (point))
(setq newword
(read-input (concat "`" word
"' not recognized; edit a replacement: ")
word))
(flush-lines (concat "^" (regexp-quote word) "$")))
(if (not (equal word newword))
(progn
(goto-char (point-min))
(query-replace-regexp (concat "\\b" (regexp-quote word) "\\b")
newword)))))))
(defun spell-string (string)
"Check spelling of string supplied as argument."
(interactive "sSpell string: ")
(let ((buf (get-buffer-create " *temp*")))
(save-excursion
(set-buffer buf)
(widen)
(erase-buffer)
(insert string "\n")
(if (string= "spell" spell-command)
(call-process-region (point-min) (point-max) "spell"
t t)
(call-process-region (point-min) (point-max) shell-file-name
t t nil "-c" spell-command))
(if (= 0 (buffer-size))
(message "%s is correct" string)
(goto-char (point-min))
(while (search-forward "\n" nil t)
(replace-match " "))
(message "%sincorrect" (buffer-substring 1 (point-max)))))))
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