1 ;;; mm-util.el --- Utility functions for Mule and low level things
2 ;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
5 ;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; This file is part of GNU Emacs.
8 ;; GNU Emacs is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs; see the file COPYING. If not, write to the
20 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 ;; Boston, MA 02111-1307, USA.
27 (eval-when-compile (require 'cl))
33 (let ((nfunc (intern (format "mm-%s" (car elem)))))
34 (if (fboundp (car elem))
35 (defalias nfunc (car elem))
36 (defalias nfunc (cdr elem)))))
37 '((decode-coding-string . (lambda (s a) s))
38 (encode-coding-string . (lambda (s a) s))
39 (encode-coding-region . ignore)
40 (coding-system-list . ignore)
41 (decode-coding-region . ignore)
43 (device-type . ignore)
44 (coding-system-equal . equal)
45 (annotationp . ignore)
46 (set-buffer-file-coding-system . ignore)
48 . (lambda (charset int)
56 (mapcar (lambda (e) (list (symbol-name (car e))))
57 mm-mime-mule-charset-alist)
60 . (lambda (from to string) ;; stolen (and renamed) from nnheader.el
61 "Replace characters in STRING from FROM to TO."
62 (let ((string (substring string 0)) ;Copy string.
65 ;; Replace all occurrences of FROM with TO.
67 (when (= (aref string idx) from)
71 (string-as-unibyte . identity)
72 (string-as-multibyte . identity)
73 (multibyte-string-p . ignore))))
76 (defalias 'mm-char-or-char-int-p
78 ((fboundp 'char-or-char-int-p) 'char-or-char-int-p)
79 ((fboundp 'char-valid-p) 'char-valid-p)
83 (defalias 'mm-read-coding-system
85 ((fboundp 'read-coding-system)
86 (if (and (featurep 'xemacs)
87 (<= (string-to-number emacs-version) 21.1))
88 (lambda (prompt &optional default-coding-system)
89 (read-coding-system prompt))
91 (t (lambda (prompt &optional default-coding-system)
92 "Prompt the user for a coding system."
94 prompt (mapcar (lambda (s) (list (symbol-name (car s))))
95 mm-mime-mule-charset-alist)))))))
97 (defvar mm-coding-system-list nil)
98 (defun mm-get-coding-system-list ()
99 "Get the coding system list."
100 (or mm-coding-system-list
101 (setq mm-coding-system-list (mm-coding-system-list))))
103 (defun mm-coding-system-p (sym)
104 "Return non-nil if SYM is a coding system."
105 (or (and (fboundp 'coding-system-p) (coding-system-p sym))
106 (memq sym (mm-get-coding-system-list))))
108 (defvar mm-charset-synonym-alist
110 ;; Perfectly fine? A valid MIME name, anyhow.
111 ,@(unless (mm-coding-system-p 'big5)
113 ;; Not in XEmacs, but it's not a proper MIME charset anyhow.
114 ,@(unless (mm-coding-system-p 'x-ctext)
115 '((x-ctext . ctext)))
116 ;; Apparently not defined in Emacs 20, but is a valid MIME name.
117 ,@(unless (mm-coding-system-p 'gb2312)
118 '((gb2312 . cn-gb-2312)))
119 ;; ISO-8859-15 is very similar to ISO-8859-1.
120 ,@(unless (mm-coding-system-p 'iso-8859-15) ; Emacs 21 defines it.
121 '((iso-8859-15 . iso-8859-1)))
122 ;; Windows-1252 is actually a superset of Latin-1. See also
123 ;; `gnus-article-dumbquotes-map'.
124 ,@(unless (mm-coding-system-p 'windows-1252)
125 (if (mm-coding-system-p 'cp1252)
126 '((windows-1252 . cp1252))
127 '((windows-1252 . iso-8859-1))))
128 ;; Windows-1250 is a variant of Latin-2 heavily used by Microsoft
129 ;; Outlook users in Czech republic. Use this to allow reading of their
130 ;; e-mails. cp1250 should be defined by M-x codepage-setup.
131 ,@(if (and (not (mm-coding-system-p 'windows-1250))
132 (mm-coding-system-p 'cp1250))
133 '((windows-1250 . cp1250)))
135 "A mapping from invalid charset names to the real charset names.")
137 (defvar mm-binary-coding-system
139 ((mm-coding-system-p 'binary) 'binary)
140 ((mm-coding-system-p 'no-conversion) 'no-conversion)
142 "100% binary coding system.")
144 (defvar mm-text-coding-system
145 (or (if (memq system-type '(windows-nt ms-dos ms-windows))
146 (and (mm-coding-system-p 'raw-text-dos) 'raw-text-dos)
147 (and (mm-coding-system-p 'raw-text) 'raw-text))
148 mm-binary-coding-system)
149 "Text-safe coding system (For removing ^M).")
151 (defvar mm-text-coding-system-for-write nil
152 "Text coding system for write.")
154 (defvar mm-auto-save-coding-system
156 ((mm-coding-system-p 'emacs-mule)
157 (if (memq system-type '(windows-nt ms-dos ms-windows))
158 (if (mm-coding-system-p 'emacs-mule-dos)
159 'emacs-mule-dos mm-binary-coding-system)
161 ((mm-coding-system-p 'escape-quoted) 'escape-quoted)
162 (t mm-binary-coding-system))
163 "Coding system of auto save file.")
165 (defvar mm-universal-coding-system mm-auto-save-coding-system
166 "The universal Coding system.")
168 ;; Fixme: some of the cars here aren't valid MIME charsets. That
169 ;; should only matter with XEmacs, though.
170 (defvar mm-mime-mule-charset-alist
172 (iso-8859-1 latin-iso8859-1)
173 (iso-8859-2 latin-iso8859-2)
174 (iso-8859-3 latin-iso8859-3)
175 (iso-8859-4 latin-iso8859-4)
176 (iso-8859-5 cyrillic-iso8859-5)
177 ;; Non-mule (X)Emacs uses the last mule-charset for 8bit characters.
178 ;; The fake mule-charset, gnus-koi8-r, tells Gnus that the default
179 ;; charset is koi8-r, not iso-8859-5.
180 (koi8-r cyrillic-iso8859-5 gnus-koi8-r)
181 (iso-8859-6 arabic-iso8859-6)
182 (iso-8859-7 greek-iso8859-7)
183 (iso-8859-8 hebrew-iso8859-8)
184 (iso-8859-9 latin-iso8859-9)
185 (iso-8859-14 latin-iso8859-14)
186 (iso-8859-15 latin-iso8859-15)
187 (viscii vietnamese-viscii-lower)
188 (iso-2022-jp latin-jisx0201 japanese-jisx0208 japanese-jisx0208-1978)
189 (euc-kr korean-ksc5601)
190 (gb2312 chinese-gb2312)
191 (big5 chinese-big5-1 chinese-big5-2)
193 (thai-tis620 thai-tis620)
194 (iso-2022-7bit ethiopic arabic-1-column arabic-2-column)
195 (iso-2022-jp-2 latin-iso8859-1 greek-iso8859-7
196 latin-jisx0201 japanese-jisx0208-1978
197 chinese-gb2312 japanese-jisx0208
198 korean-ksc5601 japanese-jisx0212
200 (iso-2022-int-1 latin-iso8859-1 greek-iso8859-7
201 latin-jisx0201 japanese-jisx0208-1978
202 chinese-gb2312 japanese-jisx0208
203 korean-ksc5601 japanese-jisx0212
204 chinese-cns11643-1 chinese-cns11643-2)
205 (iso-2022-int-1 latin-iso8859-1 latin-iso8859-2
206 cyrillic-iso8859-5 greek-iso8859-7
207 latin-jisx0201 japanese-jisx0208-1978
208 chinese-gb2312 japanese-jisx0208
209 korean-ksc5601 japanese-jisx0212
210 chinese-cns11643-1 chinese-cns11643-2
211 chinese-cns11643-3 chinese-cns11643-4
212 chinese-cns11643-5 chinese-cns11643-6
214 ,(if (or (not (fboundp 'charsetp)) ;; non-Mule case
215 (charsetp 'unicode-a)
216 (not (mm-coding-system-p 'mule-utf-8)))
217 '(utf-8 unicode-a unicode-b unicode-c unicode-d unicode-e)
218 ;; If we have utf-8 we're in Mule 5+.
221 (coding-system-get 'mule-utf-8 'safe-charsets)))))
222 "Alist of MIME-charset/MULE-charsets.")
224 ;; Correct by construction, but should be unnecessary:
226 (when (and (not (featurep 'xemacs))
227 (fboundp 'coding-system-list)
228 (fboundp 'sort-coding-systems))
229 (setq mm-mime-mule-charset-alist
234 (when (and (coding-system-get cs 'mime-charset)
235 (not (eq t (coding-system-get cs 'safe-charsets))))
236 (list (cons (coding-system-get cs 'mime-charset)
238 (coding-system-get cs 'safe-charsets))))))
239 (sort-coding-systems (coding-system-list 'base-only))))))
241 (defvar mm-hack-charsets '(iso-8859-15 iso-2022-jp-2)
242 "A list of special charsets when encoding.
243 The each element could be one of the following:
244 `iso-8859-15' convert ISO-8859-1, -9 to ISO-8859-15 if ISO-8859-15 exists.
245 `iso-2022-jp-2' convert ISO-2022-jp to ISO-2022-jp-2 if ISO-2022-jp-2 exists."
248 ;; FIXME: what the value should be?
249 (defvar mm-iso-8859-15-compatible
250 '((iso-8859-1 "\xA4\xA6\xA8\xB4\xB8\xBC\xBD\xBE")
251 (iso-8859-9 "\xA4\xA6\xA8\xB4\xB8\xBC\xBD\xBE\xD0\xDD\xDE\xF0\xFD\xFE"))
252 "Coding systems (inconvertible characters) to ISO-8859-15.")
254 (defvar mm-iso-8859-x-to-15-table
255 (and (fboundp 'coding-system-p)
256 (mm-coding-system-p 'iso-8859-15)
259 (if (mm-coding-system-p (car cs))
260 (let ((c (string-to-char
261 (decode-coding-string "\341" (car cs)))))
262 (cons (char-charset c)
265 (decode-coding-string "\341" 'iso-8859-15)) c)
266 (string-to-list (decode-coding-string (car (cdr cs))
269 mm-iso-8859-15-compatible))
270 "A table of the difference character between ISO-8859-X and ISO-8859-15.")
272 ;;; Internal variables:
276 (defun mm-mule-charset-to-mime-charset (charset)
277 "Return the MIME charset corresponding to the given Mule CHARSET."
278 (if (fboundp 'find-coding-systems-for-charsets)
280 (dolist (cs (find-coding-systems-for-charsets (list charset)))
283 (setq mime (coding-system-get cs 'mime-charset)))))
285 (let ((alist mm-mime-mule-charset-alist)
288 (when (memq charset (cdar alist))
289 (setq out (caar alist)
294 (defun mm-charset-to-coding-system (charset &optional lbt)
295 "Return coding-system corresponding to CHARSET.
296 CHARSET is a symbol naming a MIME charset.
297 If optional argument LBT (`unix', `dos' or `mac') is specified, it is
298 used as the line break code type of the coding system."
299 (when (stringp charset)
300 (setq charset (intern (downcase charset))))
302 (setq charset (intern (format "%s-%s" charset lbt))))
306 ;; Running in a non-MULE environment.
307 ((null (mm-get-coding-system-list))
310 ((eq charset 'us-ascii)
312 ;; Check to see whether we can handle this charset. (This depends
313 ;; on there being some coding system matching each `mime-charset'
314 ;; property defined, as there should be.)
315 ((and (mm-coding-system-p charset)
316 ;;; Doing this would potentially weed out incorrect charsets.
318 ;;; (eq charset (coding-system-get charset 'mime-charset))
321 ;; Translate invalid charsets.
322 ((mm-coding-system-p (setq charset
324 mm-charset-synonym-alist))))
326 ;; Last resort: search the coding system list for entries which
327 ;; have the right mime-charset in case the canonical name isn't
328 ;; defined (though it should be).
330 ;; mm-get-coding-system-list returns a list of cs without lbt.
332 (dolist (c (mm-get-coding-system-list))
334 (eq charset (coding-system-get c 'mime-charset)))
338 (defsubst mm-replace-chars-in-string (string from to)
339 (mm-subst-char-in-string from to string))
342 (defvar mm-emacs-mule (and (not (featurep 'xemacs))
343 (boundp 'default-enable-multibyte-characters)
344 default-enable-multibyte-characters
345 (fboundp 'set-buffer-multibyte))
348 (defvar mm-mule4-p (and mm-emacs-mule
350 (not (charsetp 'eight-bit-control)))
354 (defun mm-enable-multibyte ()
355 "Set the multibyte flag of the current buffer.
356 Only do this if the default value of `enable-multibyte-characters' is
357 non-nil. This is a no-op in XEmacs."
358 (set-buffer-multibyte t))
359 (defalias 'mm-enable-multibyte 'ignore))
362 (defun mm-disable-multibyte ()
363 "Unset the multibyte flag of in the current buffer.
364 This is a no-op in XEmacs."
365 (set-buffer-multibyte nil))
366 (defalias 'mm-disable-multibyte 'ignore))
369 (defun mm-enable-multibyte-mule4 ()
370 "Enable multibyte in the current buffer.
371 Only used in Emacs Mule 4."
372 (set-buffer-multibyte t))
373 (defalias 'mm-enable-multibyte-mule4 'ignore))
376 (defun mm-disable-multibyte-mule4 ()
377 "Disable multibyte in the current buffer.
378 Only used in Emacs Mule 4."
379 (set-buffer-multibyte nil))
380 (defalias 'mm-disable-multibyte-mule4 'ignore)))
382 (defun mm-preferred-coding-system (charset)
383 ;; A typo in some Emacs versions.
384 (or (get-charset-property charset 'prefered-coding-system)
385 (get-charset-property charset 'preferred-coding-system)))
387 (defun mm-charset-after (&optional pos)
388 "Return charset of a character in current buffer at position POS.
389 If POS is nil, it defauls to the current point.
390 If POS is out of range, the value is nil.
391 If the charset is `composition', return the actual one."
392 (let ((char (char-after pos)) charset)
393 (if (< (mm-char-int char) 128)
394 (setq charset 'ascii)
395 ;; charset-after is fake in some Emacsen.
396 (setq charset (and (fboundp 'char-charset) (char-charset char)))
397 (if (eq charset 'composition)
398 (let ((p (or pos (point))))
399 (cadr (find-charset-region p (1+ p))))
400 (if (and charset (not (memq charset '(ascii eight-bit-control
401 eight-bit-graphic))))
404 mail-parse-mule-charset ;; cached mule-charset
406 (setq mail-parse-mule-charset
407 (and (boundp 'current-language-environment)
410 (assoc current-language-environment
411 language-info-alist))))))
412 (if (or (not mail-parse-mule-charset)
413 (eq mail-parse-mule-charset 'ascii))
414 (setq mail-parse-mule-charset
415 (or (car (last (assq mail-parse-charset
416 mm-mime-mule-charset-alist)))
417 ;; Fixme: don't fix that!
419 mail-parse-mule-charset)))))))
421 (defun mm-mime-charset (charset)
422 "Return the MIME charset corresponding to the given Mule CHARSET."
423 (if (eq charset 'unknown)
424 (error "The message contains non-printable characters, please use attachment"))
425 (if (and (fboundp 'coding-system-get) (fboundp 'get-charset-property))
426 ;; This exists in Emacs 20.
428 (and (mm-preferred-coding-system charset)
430 (mm-preferred-coding-system charset) 'mime-charset))
431 (and (eq charset 'ascii)
433 (mm-preferred-coding-system charset)
434 (mm-mule-charset-to-mime-charset charset))
435 ;; This is for XEmacs.
436 (mm-mule-charset-to-mime-charset charset)))
438 (defun mm-delete-duplicates (list)
439 "Simple substitute for CL `delete-duplicates', testing with `equal'."
442 (setq head (car list))
443 (setq list (delete head list))
444 (setq result (cons head result)))
447 ;; It's not clear whether this is supposed to mean the global or local
448 ;; setting. I think it's used inconsistently. -- fx
449 (defsubst mm-multibyte-p ()
450 "Say whether multibyte is enabled."
451 (if (and (not (featurep 'xemacs))
452 (boundp 'enable-multibyte-characters))
453 enable-multibyte-characters
456 (defun mm-iso-8859-x-to-15-region (&optional b e)
457 (if (fboundp 'char-charset)
458 (let (charset item c inconvertible)
460 (if e (narrow-to-region b e))
461 (goto-char (point-min))
462 (skip-chars-forward "\0-\177")
465 ((not (setq item (assq (char-charset (setq c (char-after)))
466 mm-iso-8859-x-to-15-table)))
468 ((memq c (cdr (cdr item)))
469 (setq inconvertible t)
472 (insert (prog1 (+ c (car (cdr item))) (delete-char 1))))
473 (skip-chars-forward "\0-\177"))))
474 (not inconvertible))))
476 (defun mm-find-mime-charset-region (b e &optional hack-charsets)
477 "Return the MIME charsets needed to encode the region between B and E.
478 Nil means ASCII, a single-element list represents an appropriate MIME
479 charset, and a longer list means no appropriate charset."
481 ;; The return possibilities of this function are a mess...
482 (or (and (mm-multibyte-p)
483 (fboundp 'find-coding-systems-region)
484 ;; Find the mime-charset of the most preferred coding
485 ;; system that has one.
486 (let ((systems (find-coding-systems-region b e)))
487 ;; Fixme: The `mime-charset' (`x-ctext') of `compound-text'
488 ;; is not in the IANA list.
489 (setq systems (delq 'compound-text systems))
490 (unless (equal systems '(undecided))
492 (let ((cs (coding-system-get (pop systems) 'mime-charset)))
495 charsets (list cs))))))
497 ;; Otherwise we're not multibyte, XEmacs or a single coding
498 ;; system won't cover it.
500 (mm-delete-duplicates
501 (mapcar 'mm-mime-charset
503 (mm-find-charset-region b e))))))
504 (if (and (memq 'iso-8859-15 charsets)
505 (memq 'iso-8859-15 hack-charsets)
506 (save-excursion (mm-iso-8859-x-to-15-region b e)))
507 (mapcar (lambda (x) (setq charsets (delq (car x) charsets)))
508 mm-iso-8859-15-compatible))
509 (if (and (memq 'iso-2022-jp-2 charsets)
510 (memq 'iso-2022-jp-2 hack-charsets))
511 (setq charsets (delq 'iso-2022-jp charsets)))
514 (defmacro mm-with-unibyte-buffer (&rest forms)
515 "Create a temporary buffer, and evaluate FORMS there like `progn'.
516 Use unibyte mode for this."
517 `(let (default-enable-multibyte-characters)
518 (with-temp-buffer ,@forms)))
519 (put 'mm-with-unibyte-buffer 'lisp-indent-function 0)
520 (put 'mm-with-unibyte-buffer 'edebug-form-spec '(body))
522 (defmacro mm-with-unibyte-current-buffer (&rest forms)
523 "Evaluate FORMS with current current buffer temporarily made unibyte.
524 Also bind `default-enable-multibyte-characters' to nil.
525 Equivalent to `progn' in XEmacs"
526 (let ((multibyte (make-symbol "multibyte"))
527 (buffer (make-symbol "buffer")))
529 (let ((,multibyte enable-multibyte-characters)
530 (,buffer (current-buffer)))
532 (let (default-enable-multibyte-characters)
533 (set-buffer-multibyte nil)
536 (set-buffer-multibyte ,multibyte)))
537 (let (default-enable-multibyte-characters)
539 (put 'mm-with-unibyte-current-buffer 'lisp-indent-function 0)
540 (put 'mm-with-unibyte-current-buffer 'edebug-form-spec '(body))
542 (defmacro mm-with-unibyte-current-buffer-mule4 (&rest forms)
543 "Evaluate FORMS there like `progn' in current buffer.
545 (let ((multibyte (make-symbol "multibyte"))
546 (buffer (make-symbol "buffer")))
548 (let ((,multibyte enable-multibyte-characters)
549 (,buffer (current-buffer)))
551 (let (default-enable-multibyte-characters)
552 (set-buffer-multibyte nil)
555 (set-buffer-multibyte ,multibyte)))
556 (let (default-enable-multibyte-characters)
558 (put 'mm-with-unibyte-current-buffer-mule4 'lisp-indent-function 0)
559 (put 'mm-with-unibyte-current-buffer-mule4 'edebug-form-spec '(body))
561 (defmacro mm-with-unibyte (&rest forms)
562 "Eval the FORMS with the default value of `enable-multibyte-characters' nil, ."
563 `(let (default-enable-multibyte-characters)
565 (put 'mm-with-unibyte 'lisp-indent-function 0)
566 (put 'mm-with-unibyte 'edebug-form-spec '(body))
568 (defun mm-find-charset-region (b e)
569 "Return a list of Emacs charsets in the region B to E."
571 ((and (mm-multibyte-p)
572 (fboundp 'find-charset-region))
573 ;; Remove composition since the base charsets have been included.
574 ;; Remove eight-bit-*, treat them as ascii.
575 (let ((css (find-charset-region b e)))
576 (mapcar (lambda (cs) (setq css (delq cs css)))
577 '(composition eight-bit-control eight-bit-graphic
581 ;; We are in a unibyte buffer or XEmacs non-mule, so we futz around a bit.
584 (narrow-to-region b e)
585 (goto-char (point-min))
586 (skip-chars-forward "\0-\177")
591 (and (boundp 'current-language-environment)
592 (car (last (assq 'charset
593 (assoc current-language-environment
594 language-info-alist))))))
595 (if (eq charset 'ascii) (setq charset nil))
598 (car (last (assq mail-parse-charset
599 mm-mime-mule-charset-alist)))))
600 (list 'ascii (or charset 'latin-iso8859-1)))))))))
602 (if (fboundp 'shell-quote-argument)
603 (defalias 'mm-quote-arg 'shell-quote-argument)
604 (defun mm-quote-arg (arg)
605 "Return a version of ARG that is safe to evaluate in a shell."
606 (let ((pos 0) new-pos accum)
607 ;; *** bug: we don't handle newline characters properly
608 (while (setq new-pos (string-match "[]*[;!'`\"$\\& \t{} |()<>]" arg pos))
609 (push (substring arg pos new-pos) accum)
611 (push (list (aref arg new-pos)) accum)
612 (setq pos (1+ new-pos)))
615 (apply 'concat (nconc (nreverse accum) (list (substring arg pos))))))))
617 (defun mm-auto-mode-alist ()
618 "Return an `auto-mode-alist' with only the .gz (etc) thingies."
619 (let ((alist auto-mode-alist)
622 (when (listp (cdar alist))
623 (push (car alist) out))
627 (defvar mm-inhibit-file-name-handlers
628 '(jka-compr-handler image-file-handler)
629 "A list of handlers doing (un)compression (etc) thingies.")
631 (defun mm-insert-file-contents (filename &optional visit beg end replace
633 "Like `insert-file-contents', q.v., but only reads in the file.
634 A buffer may be modified in several ways after reading into the buffer due
635 to advanced Emacs features, such as file-name-handlers, format decoding,
636 find-file-hooks, etc.
637 If INHIBIT is non-nil, inhibit mm-inhibit-file-name-handlers.
638 This function ensures that none of these modifications will take place."
639 (let ((format-alist nil)
640 (auto-mode-alist (if inhibit nil (mm-auto-mode-alist)))
641 (default-major-mode 'fundamental-mode)
642 (enable-local-variables nil)
643 (after-insert-file-functions nil)
644 (enable-local-eval nil)
645 (find-file-hooks nil)
646 (inhibit-file-name-operation (if inhibit
647 'insert-file-contents
648 inhibit-file-name-operation))
649 (inhibit-file-name-handlers
651 (append mm-inhibit-file-name-handlers
652 inhibit-file-name-handlers)
653 inhibit-file-name-handlers)))
654 (insert-file-contents filename visit beg end replace)))
656 (defun mm-append-to-file (start end filename &optional codesys inhibit)
657 "Append the contents of the region to the end of file FILENAME.
658 When called from a function, expects three arguments,
659 START, END and FILENAME. START and END are buffer positions
660 saying what text to write.
661 Optional fourth argument specifies the coding system to use when
663 If INHIBIT is non-nil, inhibit mm-inhibit-file-name-handlers."
664 (let ((coding-system-for-write
665 (or codesys mm-text-coding-system-for-write
666 mm-text-coding-system))
667 (inhibit-file-name-operation (if inhibit
669 inhibit-file-name-operation))
670 (inhibit-file-name-handlers
672 (append mm-inhibit-file-name-handlers
673 inhibit-file-name-handlers)
674 inhibit-file-name-handlers)))
675 (append-to-file start end filename)))
677 (defun mm-write-region (start end filename &optional append visit lockname
678 coding-system inhibit)
680 "Like `write-region'.
681 If INHIBIT is non-nil, inhibit mm-inhibit-file-name-handlers."
682 (let ((coding-system-for-write
683 (or coding-system mm-text-coding-system-for-write
684 mm-text-coding-system))
685 (inhibit-file-name-operation (if inhibit
687 inhibit-file-name-operation))
688 (inhibit-file-name-handlers
690 (append mm-inhibit-file-name-handlers
691 inhibit-file-name-handlers)
692 inhibit-file-name-handlers)))
693 (write-region start end filename append visit lockname)))
695 (defun mm-image-load-path (&optional package)
697 (dolist (path load-path (nreverse result))
698 (if (file-directory-p
699 (setq dir (concat (file-name-directory
700 (directory-file-name path))
701 "etc/" (or package "gnus/"))))
703 (push path result))))
707 ;;; mm-util.el ends here