Language/OS - Multiplatform Resource Library/LANGUAGE OS.iso/gnu/emacs.lha/emacs-19.16/lisp/spell.el

Lisp/Scheme | 1993-06-09 | 5KB | 151 lines

;;; spell.el --- spelling correction interface for Emacs.

;; Copyright (C) 1985 Free Software Foundation, Inc.

;; Maintainer: FSF
;; Keywords: wp, unix

;; 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 2, 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.

;;; Commentary:

;; This mode provides an Emacs interface to the UNIX spell(1) program.
;; Entry points are `spell-buffer', `spell-word', `spell-region' and
;; `spell-string'.  These facilities are documented in the Emacs user's
;; manual.

;;; Code:

(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.")

;;;###autoload
(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"))

;;;###autoload
(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))))

;;;###autoload
(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)))))))


;;;###autoload
(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)))))))

;;; spell.el ends here