1 ;;; mml.el --- A package for parsing and validating MML documents
3 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 3, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 ;; Boston, MA 02110-1301, USA.
30 (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
37 (eval-when-compile (require 'cl))
40 (autoload 'message-make-message-id "message")
41 (autoload 'gnus-setup-posting-charset "gnus-msg")
42 (autoload 'gnus-make-local-hook "gnus-util")
43 (autoload 'message-fetch-field "message")
44 (autoload 'message-mark-active-p "message")
45 (autoload 'message-info "message")
46 (autoload 'fill-flowed-encode "flow-fill")
47 (autoload 'message-posting-charset "message")
48 (autoload 'dnd-get-local-file-name "dnd"))
50 (defvar gnus-article-mime-handles)
52 (defvar gnus-newsrc-hashtb)
53 (defvar message-default-charset)
54 (defvar message-deletable-headers)
55 (defvar message-options)
56 (defvar message-posting-charset)
57 (defvar message-required-mail-headers)
58 (defvar message-required-news-headers)
59 (defvar dnd-protocol-alist)
60 (defvar mml-dnd-protocol-alist)
62 (defcustom mml-content-type-parameters
63 '(name access-type expiration size permission format)
64 "*A list of acceptable parameters in MML tag.
65 These parameters are generated in Content-Type header if exists."
67 :type '(repeat (symbol :tag "Parameter"))
70 (defcustom mml-content-disposition-parameters
71 '(filename creation-date modification-date read-date)
72 "*A list of acceptable parameters in MML tag.
73 These parameters are generated in Content-Disposition header if exists."
75 :type '(repeat (symbol :tag "Parameter"))
78 (defcustom mml-content-disposition-alist
79 '((text (rtf . "attachment") (t . "inline"))
81 "Alist of MIME types or regexps matching file names and default dispositions.
82 Each element should be one of the following three forms:
84 (REGEXP . DISPOSITION)
85 (SUPERTYPE (SUBTYPE . DISPOSITION) (SUBTYPE . DISPOSITION)...)
88 Where REGEXP is a string which matches the file name (if any) of an
89 attachment, SUPERTYPE, SUBTYPE and TYPE should be symbols which are a
90 MIME supertype (e.g., text), a MIME subtype (e.g., plain) and a MIME
91 type (e.g., text/plain) respectively, and DISPOSITION should be either
92 the string \"attachment\" or the string \"inline\". The value t for
93 SUPERTYPE, SUBTYPE or TYPE matches any of those types. The first
94 match found will be used."
95 :version "23.0" ;; No Gnus
96 :type (let ((dispositions '(radio :format "DISPOSITION: %v"
98 (const :format "%v " "attachment")
99 (const :format "%v\n" "inline"))))
102 (choice :format "%[Value Menu%]%v"
103 (cons :tag "(REGEXP . DISPOSITION)" :extra-offset 4
104 (regexp :tag "REGEXP" :value ".*")
106 (cons :tag "(SUPERTYPE (SUBTYPE . DISPOSITION)...)"
108 (symbol :tag " SUPERTYPE" :value text)
109 (repeat :format "%v%i\n" :offset 0 :extra-offset 4
110 (cons :format "%v" :extra-offset 5
111 (symbol :tag "SUBTYPE" :value t)
113 (cons :tag "(TYPE . DISPOSITION)" :extra-offset 4
114 (symbol :tag "TYPE" :value t)
118 (defcustom mml-insert-mime-headers-always nil
119 "If non-nil, always put Content-Type: text/plain at top of empty parts.
120 It is necessary to work against a bug in certain clients."
125 (defvar mml-tweak-type-alist nil
126 "A list of (TYPE . FUNCTION) for tweaking MML parts.
127 TYPE is a string containing a regexp to match the MIME type. FUNCTION
128 is a Lisp function which is called with the MML handle to tweak the
129 part. This variable is used only when no TWEAK parameter exists in
132 (defvar mml-tweak-function-alist nil
133 "A list of (NAME . FUNCTION) for tweaking MML parts.
134 NAME is a string containing the name of the TWEAK parameter in the MML
135 handle. FUNCTION is a Lisp function which is called with the MML
136 handle to tweak the part.")
138 (defvar mml-tweak-sexp-alist
139 '((mml-externalize-attachments . mml-tweak-externalize-attachments))
140 "A list of (SEXP . FUNCTION) for tweaking MML parts.
141 SEXP is an s-expression. If the evaluation of SEXP is non-nil, FUNCTION
142 is called. FUNCTION is a Lisp function which is called with the MML
143 handle to tweak the part.")
145 (defvar mml-externalize-attachments nil
146 "*If non-nil, local-file attachments are generated as external parts.")
148 (defvar mml-generate-multipart-alist nil
149 "*Alist of multipart generation functions.
150 Each entry has the form (NAME . FUNCTION), where
151 NAME is a string containing the name of the part (without the
152 leading \"/multipart/\"),
153 FUNCTION is a Lisp function which is called to generate the part.
155 The Lisp function has to supply the appropriate MIME headers and the
156 contents of this part.")
158 (defvar mml-syntax-table
159 (let ((table (copy-syntax-table emacs-lisp-mode-syntax-table)))
160 (modify-syntax-entry ?\\ "/" table)
161 (modify-syntax-entry ?< "(" table)
162 (modify-syntax-entry ?> ")" table)
163 (modify-syntax-entry ?@ "w" table)
164 (modify-syntax-entry ?/ "w" table)
165 (modify-syntax-entry ?= " " table)
166 (modify-syntax-entry ?* " " table)
167 (modify-syntax-entry ?\; " " table)
168 (modify-syntax-entry ?\' " " table)
171 (defvar mml-boundary-function 'mml-make-boundary
172 "A function called to suggest a boundary.
173 The function may be called several times, and should try to make a new
174 suggestion each time. The function is called with one parameter,
175 which is a number that says how many times the function has been
176 called for this message.")
178 (defvar mml-confirmation-set nil
179 "A list of symbols, each of which disables some warning.
180 `unknown-encoding': always send messages contain characters with
181 unknown encoding; `use-ascii': always use ASCII for those characters
182 with unknown encoding; `multipart': always send messages with more than
185 (defvar mml-generate-default-type "text/plain"
186 "Content type by which the Content-Type header can be omitted.
187 The Content-Type header will not be put in the MIME part if the type
188 equals the value and there's no parameter (e.g. charset, format, etc.)
189 and `mml-insert-mime-headers-always' is nil. The value will be bound
190 to \"message/rfc822\" when encoding an article to be forwarded as a MIME
191 part. This is for the internal use, you should never modify the value.")
193 (defvar mml-buffer-list nil)
195 (defun mml-generate-new-buffer (name)
196 (let ((buf (generate-new-buffer name)))
197 (push buf mml-buffer-list)
200 (defun mml-destroy-buffers ()
201 (let (kill-buffer-hook)
202 (mapc 'kill-buffer mml-buffer-list)
203 (setq mml-buffer-list nil)))
206 "Parse the current buffer as an MML document."
208 (goto-char (point-min))
209 (with-syntax-table mml-syntax-table
212 (defun mml-parse-1 ()
213 "Parse the current buffer as an MML document."
214 (let (struct tag point contents charsets warn use-ascii no-markup-p raw)
215 (while (and (not (eobp))
216 (not (looking-at "<#/multipart")))
218 ((looking-at "<#secure")
219 ;; The secure part is essentially a meta-meta tag, which
220 ;; expands to either a part tag if there are no other parts in
221 ;; the document or a multipart tag if there are other parts
222 ;; included in the message
224 (taginfo (mml-read-tag))
225 (keyfile (cdr (assq 'keyfile taginfo)))
226 (certfile (cdr (assq 'certfile taginfo)))
227 (recipients (cdr (assq 'recipients taginfo)))
228 (sender (cdr (assq 'sender taginfo)))
229 (location (cdr (assq 'tag-location taginfo)))
230 (mode (cdr (assq 'mode taginfo)))
231 (method (cdr (assq 'method taginfo)))
234 (if (re-search-forward
235 "<#/?\\(multipart\\|part\\|external\\|mml\\)." nil t)
236 (setq secure-mode "multipart")
237 (setq secure-mode "part")))
240 (re-search-forward "<#secure[^\n]*>\n"))
241 (delete-region (match-beginning 0) (match-end 0))
242 (cond ((string= mode "sign")
243 (setq tags (list "sign" method)))
244 ((string= mode "encrypt")
245 (setq tags (list "encrypt" method)))
246 ((string= mode "signencrypt")
247 (setq tags (list "sign" method "encrypt" method))))
248 (eval `(mml-insert-tag ,secure-mode
250 ,(if keyfile "keyfile")
252 ,(if certfile "certfile")
254 ,(if recipients "recipients")
256 ,(if sender "sender")
259 (goto-char location)))
260 ((looking-at "<#multipart")
261 (push (nconc (mml-read-tag) (mml-parse-1)) struct))
262 ((looking-at "<#external")
263 (push (nconc (mml-read-tag) (list (cons 'contents (mml-read-part))))
266 (if (or (looking-at "<#part") (looking-at "<#mml"))
267 (setq tag (mml-read-tag)
270 (setq tag (list 'part '(type . "text/plain"))
273 (setq raw (cdr (assq 'raw tag))
275 contents (mml-read-part (eq 'mml (car tag)))
280 (intern (downcase (cdr (assq 'charset tag))))))
282 (mm-find-mime-charset-region point (point)
284 (when (and (not raw) (memq nil charsets))
285 (if (or (memq 'unknown-encoding mml-confirmation-set)
286 (message-options-get 'unknown-encoding)
288 Message contains characters with unknown encoding. Really send? ")
289 (message-options-set 'unknown-encoding t)))
291 (or (memq 'use-ascii mml-confirmation-set)
292 (message-options-get 'use-ascii)
293 (and (y-or-n-p "Use ASCII as charset? ")
294 (message-options-set 'use-ascii t))))
295 (setq charsets (delq nil charsets))
297 (error "Edit your message to remove those characters")))
300 (< (length charsets) 2))
301 (if (or (not no-markup-p)
302 (string-match "[^ \t\r\n]" contents))
303 ;; Don't create blank parts.
304 (push (nconc tag (list (cons 'contents contents)))
306 (let ((nstruct (mml-parse-singlepart-with-multiple-charsets
307 tag point (point) use-ascii)))
309 (not (memq 'multipart mml-confirmation-set))
310 (not (message-options-get 'multipart))
311 (not (and (y-or-n-p (format "\
312 A message part needs to be split into %d charset parts. Really send? "
314 (message-options-set 'multipart t))))
315 (error "Edit your message to use only one charset"))
316 (setq struct (nconc nstruct struct)))))))
321 (defun mml-parse-singlepart-with-multiple-charsets
322 (orig-tag beg end &optional use-ascii)
325 (narrow-to-region beg end)
326 (goto-char (point-min))
327 (let ((current (or (mm-mime-charset (mm-charset-after))
328 (and use-ascii 'us-ascii)))
329 charset struct space newline paragraph)
331 (setq charset (mm-mime-charset (mm-charset-after)))
333 ;; The charset remains the same.
334 ((eq charset 'us-ascii))
335 ((or (and use-ascii (not charset))
336 (eq charset current))
340 ;; The initial charset was ascii.
341 ((eq current 'us-ascii)
342 (setq current charset
346 ;; We have a change in charsets.
350 (list (cons 'contents
351 (buffer-substring-no-properties
352 beg (or paragraph newline space (point))))))
354 (setq beg (or paragraph newline space (point))
359 ;; Compute places where it might be nice to break the part.
361 ((memq (following-char) '(? ?\t))
362 (setq space (1+ (point))))
363 ((and (eq (following-char) ?\n)
365 (eq (char-after (1- (point))) ?\n))
366 (setq paragraph (point)))
367 ((eq (following-char) ?\n)
368 (setq newline (1+ (point)))))
370 ;; Do the final part.
371 (unless (= beg (point))
372 (push (append orig-tag
373 (list (cons 'contents
374 (buffer-substring-no-properties
379 (defun mml-read-tag ()
380 "Read a tag and return the contents."
381 (let ((orig-point (point))
382 contents name elem val)
384 (setq name (buffer-substring-no-properties
385 (point) (progn (forward-sexp 1) (point))))
386 (skip-chars-forward " \t\n")
387 (while (not (looking-at ">[ \t]*\n?"))
388 (setq elem (buffer-substring-no-properties
389 (point) (progn (forward-sexp 1) (point))))
390 (skip-chars-forward "= \t\n")
391 (setq val (buffer-substring-no-properties
392 (point) (progn (forward-sexp 1) (point))))
393 (when (string-match "^\"\\(.*\\)\"$" val)
394 (setq val (match-string 1 val)))
395 (push (cons (intern elem) val) contents)
396 (skip-chars-forward " \t\n"))
397 (goto-char (match-end 0))
398 ;; Don't skip the leading space.
399 ;;(skip-chars-forward " \t\n")
400 ;; Put the tag location into the returned contents
401 (setq contents (append (list (cons 'tag-location orig-point)) contents))
402 (cons (intern name) (nreverse contents))))
404 (defun mml-buffer-substring-no-properties-except-hard-newlines (start end)
405 (let ((str (buffer-substring-no-properties start end))
406 (bufstart start) tmp)
407 (while (setq tmp (text-property-any start end 'hard 't))
408 (set-text-properties (- tmp bufstart) (- tmp bufstart -1)
410 (setq start (1+ tmp)))
413 (defun mml-read-part (&optional mml)
414 "Return the buffer up till the next part, multipart or closing part or multipart.
415 If MML is non-nil, return the buffer up till the correspondent mml tag."
416 (let ((beg (point)) (count 1))
417 ;; If the tag ended at the end of the line, we go to the next line.
418 (when (looking-at "[ \t]*\n")
422 (while (and (> count 0) (not (eobp)))
423 (if (re-search-forward "<#\\(/\\)?mml." nil t)
424 (setq count (+ count (if (match-beginning 1) -1 1)))
425 (goto-char (point-max))))
426 (mml-buffer-substring-no-properties-except-hard-newlines
429 (match-beginning 0))))
430 (if (re-search-forward
431 "<#\\(/\\)?\\(multipart\\|part\\|external\\|mml\\)." nil t)
433 (mml-buffer-substring-no-properties-except-hard-newlines
434 beg (match-beginning 0))
435 (if (or (not (match-beginning 1))
436 (equal (match-string 2) "multipart"))
437 (goto-char (match-beginning 0))
438 (when (looking-at "[ \t]*\n")
440 (mml-buffer-substring-no-properties-except-hard-newlines
441 beg (goto-char (point-max)))))))
443 (defvar mml-boundary nil)
444 (defvar mml-base-boundary "-=-=")
445 (defvar mml-multipart-number 0)
447 (defun mml-generate-mime ()
448 "Generate a MIME message based on the current MML document."
449 (let ((cont (mml-parse))
450 (mml-multipart-number mml-multipart-number))
453 (mm-with-multibyte-buffer
454 (if (and (consp (car cont))
456 (mml-generate-mime-1 (car cont))
457 (mml-generate-mime-1 (nconc (list 'multipart '(type . "mixed"))
461 (defun mml-generate-mime-1 (cont)
462 (let ((mm-use-ultra-safe-encoding
463 (or mm-use-ultra-safe-encoding (assq 'sign cont))))
465 (narrow-to-region (point) (point))
466 (mml-tweak-part cont)
468 ((or (eq (car cont) 'part) (eq (car cont) 'mml))
469 (let* ((raw (cdr (assq 'raw cont)))
470 (filename (cdr (assq 'filename cont)))
471 (type (or (cdr (assq 'type cont))
473 (or (mm-default-file-encoding filename)
474 "application/octet-stream")
476 (charset (cdr (assq 'charset cont)))
477 (coding (mm-charset-to-coding-system charset))
478 encoding flowed coded)
479 (cond ((eq coding 'ascii)
483 (setq charset (intern (downcase charset)))))
485 (member (car (split-string type "/")) '("text" "message")))
489 ((cdr (assq 'buffer cont))
490 (insert-buffer-substring (cdr (assq 'buffer cont))))
492 (not (equal (cdr (assq 'nofile cont)) "yes")))
493 (let ((coding-system-for-read coding))
494 (mm-insert-file-contents filename)))
495 ((eq 'mml (car cont))
496 (insert (cdr (assq 'contents cont))))
499 (narrow-to-region (point) (point))
500 (insert (cdr (assq 'contents cont)))
501 ;; Remove quotes from quoted tags.
502 (goto-char (point-min))
503 (while (re-search-forward
504 "<#!+/?\\(part\\|multipart\\|external\\|mml\\)"
506 (delete-region (+ (match-beginning 0) 2)
507 (+ (match-beginning 0) 3))))))
509 ((eq (car cont) 'mml)
510 (let ((mml-boundary (mml-compute-boundary cont))
511 ;; It is necessary for the case where this
512 ;; function is called recursively since
513 ;; `m-g-d-t' will be bound to "message/rfc822"
514 ;; when encoding an article to be forwarded.
515 (mml-generate-default-type "text/plain"))
517 (let ((mm-7bit-chars (concat mm-7bit-chars "\x1b")))
518 ;; ignore 0x1b, it is part of iso-2022-jp
519 (setq encoding (mm-body-7-or-8))))
520 ((string= (car (split-string type "/")) "message")
521 (let ((mm-7bit-chars (concat mm-7bit-chars "\x1b")))
522 ;; ignore 0x1b, it is part of iso-2022-jp
523 (setq encoding (mm-body-7-or-8))))
525 ;; Only perform format=flowed filling on text/plain
526 ;; parts where there either isn't a format parameter
527 ;; in the mml tag or it says "flowed" and there
528 ;; actually are hard newlines in the text.
529 (let (use-hard-newlines)
530 (when (and (string= type "text/plain")
531 (not (string= (cdr (assq 'sign cont)) "pgp"))
532 (or (null (assq 'format cont))
533 (string= (cdr (assq 'format cont))
535 (setq use-hard-newlines
537 (point-min) (point-max) 'hard 't)))
539 ;; Indicate that `mml-insert-mime-headers' should
540 ;; insert a "; format=flowed" string unless the
541 ;; user has already specified it.
542 (setq flowed (null (assq 'format cont)))))
543 ;; Prefer `utf-8' for text/calendar parts.
545 (not (string= type "text/calendar")))
546 (setq charset (mm-encode-body charset))
547 (let ((mm-coding-system-priorities
548 (cons 'utf-8 mm-coding-system-priorities)))
549 (setq charset (mm-encode-body))))
550 (setq encoding (mm-body-encoding
551 charset (cdr (assq 'encoding cont))))))
552 (setq coded (buffer-string)))
553 (mml-insert-mime-headers cont type charset encoding flowed)
556 (mm-with-unibyte-buffer
558 ((cdr (assq 'buffer cont))
559 (insert (mm-string-as-unibyte
560 (with-current-buffer (cdr (assq 'buffer cont))
563 (not (equal (cdr (assq 'nofile cont)) "yes")))
564 (let ((coding-system-for-read mm-binary-coding-system))
565 (mm-insert-file-contents filename nil nil nil nil t))
567 (setq charset (mm-coding-system-to-mime-charset
568 (mm-find-buffer-file-coding-system
571 (let ((contents (cdr (assq 'contents cont))))
572 (if (if (featurep 'xemacs)
573 (string-match "[^\000-\377]" contents)
574 (mm-multibyte-string-p contents))
576 (mm-enable-multibyte)
579 (setq charset (mm-encode-body charset))))
580 (insert contents)))))
581 (setq encoding (mm-encode-buffer type)
582 coded (mm-string-as-multibyte (buffer-string))))
583 (mml-insert-mime-headers cont type charset encoding nil)
584 (insert "\n" coded))))
585 ((eq (car cont) 'external)
586 (insert "Content-Type: message/external-body")
587 (let ((parameters (mml-parameter-string
588 cont '(expiration size permission)))
589 (name (cdr (assq 'name cont)))
590 (url (cdr (assq 'url cont))))
592 (setq name (mml-parse-file-name name))
594 (mml-insert-parameter
595 (mail-header-encode-parameter "name" name)
596 "access-type=local-file")
597 (mml-insert-parameter
598 (mail-header-encode-parameter
599 "name" (file-name-nondirectory (nth 2 name)))
600 (mail-header-encode-parameter "site" (nth 1 name))
601 (mail-header-encode-parameter
602 "directory" (file-name-directory (nth 2 name))))
603 (mml-insert-parameter
604 (concat "access-type="
605 (if (member (nth 0 name) '("ftp@" "anonymous@"))
609 (mml-insert-parameter
610 (mail-header-encode-parameter "url" url)
613 (mml-insert-parameter-string
614 cont '(expiration size permission)))
616 (insert "Content-Type: "
617 (or (cdr (assq 'type cont))
619 (or (mm-default-file-encoding name)
620 "application/octet-stream")
623 (insert "Content-ID: " (message-make-message-id) "\n")
624 (insert "Content-Transfer-Encoding: "
625 (or (cdr (assq 'encoding cont)) "binary"))
627 (insert (or (cdr (assq 'contents cont))))
629 ((eq (car cont) 'multipart)
630 (let* ((type (or (cdr (assq 'type cont)) "mixed"))
631 (mml-generate-default-type (if (equal type "digest")
634 (handler (assoc type mml-generate-multipart-alist)))
636 (funcall (cdr handler) cont)
637 ;; No specific handler. Use default one.
638 (let ((mml-boundary (mml-compute-boundary cont)))
639 (insert (format "Content-Type: multipart/%s; boundary=\"%s\""
641 (if (cdr (assq 'start cont))
642 (format "; start=\"%s\"\n" (cdr (assq 'start cont)))
644 (let ((cont cont) part)
645 (while (setq part (pop cont))
646 ;; Skip `multipart' and attributes.
647 (when (and (consp part) (consp (cdr part)))
648 (insert "\n--" mml-boundary "\n")
649 (mml-generate-mime-1 part)
650 (goto-char (point-max)))))
651 (insert "\n--" mml-boundary "--\n")))))
653 (error "Invalid element: %S" cont)))
654 ;; handle sign & encrypt tags in a semi-smart way.
655 (let ((sign-item (assoc (cdr (assq 'sign cont)) mml-sign-alist))
656 (encrypt-item (assoc (cdr (assq 'encrypt cont))
659 (when (or sign-item encrypt-item)
660 (when (setq sender (cdr (assq 'sender cont)))
661 (message-options-set 'mml-sender sender)
662 (message-options-set 'message-sender sender))
663 (if (setq recipients (cdr (assq 'recipients cont)))
664 (message-options-set 'message-recipients recipients))
665 (let ((style (mml-signencrypt-style
666 (first (or sign-item encrypt-item)))))
667 ;; check if: we're both signing & encrypting, both methods
668 ;; are the same (why would they be different?!), and that
669 ;; the signencrypt style allows for combined operation.
670 (if (and sign-item encrypt-item (equal (first sign-item)
671 (first encrypt-item))
672 (equal style 'combined))
673 (funcall (nth 1 encrypt-item) cont t)
674 ;; otherwise, revert to the old behavior.
676 (funcall (nth 1 sign-item) cont))
678 (funcall (nth 1 encrypt-item) cont)))))))))
680 (defun mml-compute-boundary (cont)
681 "Return a unique boundary that does not exist in CONT."
682 (let ((mml-boundary (funcall mml-boundary-function
683 (incf mml-multipart-number))))
684 ;; This function tries again and again until it has found
685 ;; a unique boundary.
686 (while (not (catch 'not-unique
687 (mml-compute-boundary-1 cont))))
690 (defun mml-compute-boundary-1 (cont)
693 ((eq (car cont) 'part)
696 ((cdr (assq 'buffer cont))
697 (insert-buffer-substring (cdr (assq 'buffer cont))))
698 ((and (setq filename (cdr (assq 'filename cont)))
699 (not (equal (cdr (assq 'nofile cont)) "yes")))
700 (mm-insert-file-contents filename nil nil nil nil t))
702 (insert (cdr (assq 'contents cont)))))
703 (goto-char (point-min))
704 (when (re-search-forward (concat "^--" (regexp-quote mml-boundary))
706 (setq mml-boundary (funcall mml-boundary-function
707 (incf mml-multipart-number)))
708 (throw 'not-unique nil))))
709 ((eq (car cont) 'multipart)
710 (mapc 'mml-compute-boundary-1 (cddr cont))))
713 (defun mml-make-boundary (number)
714 (concat (make-string (% number 60) ?=)
720 (defun mml-content-disposition (type &optional filename)
721 "Return a default disposition name suitable to TYPE or FILENAME."
722 (let ((defs mml-content-disposition-alist)
723 disposition def types)
724 (while (and (not disposition) defs)
725 (setq def (pop defs))
726 (cond ((stringp (car def))
728 (string-match (car def) filename))
729 (setq disposition (cdr def))))
731 (when (string= (car (setq types (split-string type "/")))
733 (setq type (cadr types)
735 (while (and (not disposition) types)
736 (setq def (pop types))
737 (when (or (eq (car def) t) (string= type (car def)))
738 (setq disposition (cdr def))))))
740 (when (or (eq (car def) t) (string= type (car def)))
741 (setq disposition (cdr def))))))
742 (or disposition "attachment")))
744 (defun mml-insert-mime-headers (cont type charset encoding flowed)
745 (let (parameters id disposition description)
747 (mml-parameter-string
748 cont mml-content-type-parameters))
752 (not (equal type mml-generate-default-type))
753 mml-insert-mime-headers-always)
754 (when (consp charset)
756 "Can't encode a part with several charsets"))
757 (insert "Content-Type: " type)
759 (mml-insert-parameter
760 (mail-header-encode-parameter "charset" (symbol-name charset))))
762 (mml-insert-parameter "format=flowed"))
764 (mml-insert-parameter-string
765 cont mml-content-type-parameters))
767 (when (setq id (cdr (assq 'id cont)))
768 (insert "Content-ID: " id "\n"))
770 (mml-parameter-string
771 cont mml-content-disposition-parameters))
772 (when (or (setq disposition (cdr (assq 'disposition cont)))
774 (insert "Content-Disposition: "
776 (mml-content-disposition type (cdr (assq 'filename cont)))))
778 (mml-insert-parameter-string
779 cont mml-content-disposition-parameters))
781 (unless (eq encoding '7bit)
782 (insert (format "Content-Transfer-Encoding: %s\n" encoding)))
783 (when (setq description (cdr (assq 'description cont)))
784 (insert "Content-Description: ")
785 (setq description (prog1
787 (insert description "\n")))
788 (mail-encode-encoded-word-region description (point)))))
790 (defun mml-parameter-string (cont types)
793 (while (setq type (pop types))
794 (when (setq value (cdr (assq type cont)))
795 ;; Strip directory component from the filename parameter.
796 (when (eq type 'filename)
797 (setq value (file-name-nondirectory value)))
798 (setq string (concat string "; "
799 (mail-header-encode-parameter
800 (symbol-name type) value)))))
801 (when (not (zerop (length string)))
804 (defun mml-insert-parameter-string (cont types)
806 (while (setq type (pop types))
807 (when (setq value (cdr (assq type cont)))
808 ;; Strip directory component from the filename parameter.
809 (when (eq type 'filename)
810 (setq value (file-name-nondirectory value)))
811 (mml-insert-parameter
812 (mail-header-encode-parameter
813 (symbol-name type) value))))))
815 (defvar ange-ftp-name-format)
816 (defvar efs-path-regexp)
818 (defun mml-parse-file-name (path)
819 (if (if (boundp 'efs-path-regexp)
820 (string-match efs-path-regexp path)
821 (if (boundp 'ange-ftp-name-format)
822 (string-match (car ange-ftp-name-format) path)))
823 (list (match-string 1 path) (match-string 2 path)
824 (substring path (1+ (match-end 2))))
827 (defun mml-insert-buffer (buffer)
828 "Insert BUFFER at point and quote any MML markup."
830 (narrow-to-region (point) (point))
831 (insert-buffer-substring buffer)
832 (mml-quote-region (point-min) (point-max))
833 (goto-char (point-max))))
836 ;;; Transforming MIME to MML
839 (defun mime-to-mml (&optional handles)
840 "Translate the current buffer (which should be a message) into MML.
841 If HANDLES is non-nil, use it instead reparsing the buffer."
842 ;; First decode the head.
844 (message-narrow-to-head)
845 (let ((rfc2047-quote-decoded-words-containing-tspecials t))
846 (mail-decode-encoded-word-region (point-min) (point-max))))
848 (setq handles (mm-dissect-buffer t)))
849 (goto-char (point-min))
850 (search-forward "\n\n" nil t)
851 (delete-region (point) (point-max))
852 (if (stringp (car handles))
853 (mml-insert-mime handles)
854 (mml-insert-mime handles t))
855 (mm-destroy-parts handles)
857 (message-narrow-to-head)
858 ;; Remove them, they are confusing.
859 (message-remove-header "Content-Type")
860 (message-remove-header "MIME-Version")
861 (message-remove-header "Content-Disposition")
862 (message-remove-header "Content-Transfer-Encoding")))
864 (defun mml-to-mime ()
865 "Translate the current buffer from MML to MIME."
866 (message-encode-message-body)
868 (message-narrow-to-headers-or-head)
869 ;; Skip past any From_ headers.
870 (while (looking-at "From ")
872 (let ((mail-parse-charset message-default-charset))
873 (mail-encode-encoded-word-buffer))))
875 (defun mml-insert-mime (handle &optional no-markup)
876 (let (textp buffer mmlp)
877 ;; Determine type and stuff.
878 (unless (stringp (car handle))
879 (unless (setq textp (equal (mm-handle-media-supertype handle) "text"))
881 (set-buffer (setq buffer (mml-generate-new-buffer " *mml*")))
882 (mm-insert-part handle 'no-cache)
883 (if (setq mmlp (equal (mm-handle-media-type handle)
887 (mml-insert-mml-markup handle nil t t)
888 (unless (and no-markup
889 (equal (mm-handle-media-type handle) "text/plain"))
890 (mml-insert-mml-markup handle buffer textp)))
893 (insert-buffer-substring buffer)
894 (goto-char (point-max))
895 (insert "<#/mml>\n"))
896 ((stringp (car handle))
897 (mapc 'mml-insert-mime (cdr handle))
898 (insert "<#/multipart>\n"))
900 (let ((charset (mail-content-type-get
901 (mm-handle-type handle) 'charset))
903 (if (eq charset 'gnus-decoded)
904 (mm-insert-part handle)
905 (insert (mm-decode-string (mm-get-part handle) charset)))
906 (mml-quote-region start (point)))
907 (goto-char (point-max)))
909 (insert "<#/part>\n")))))
911 (defun mml-insert-mml-markup (handle &optional buffer nofile mmlp)
912 "Take a MIME handle and insert an MML tag."
913 (if (stringp (car handle))
915 (insert "<#multipart type=" (mm-handle-media-subtype handle))
916 (let ((start (mm-handle-multipart-ctl-parameter handle 'start)))
918 (insert " start=\"" start "\"")))
921 (insert "<#mml type=" (mm-handle-media-type handle))
922 (insert "<#part type=" (mm-handle-media-type handle)))
923 (dolist (elem (append (cdr (mm-handle-type handle))
924 (cdr (mm-handle-disposition handle))))
925 (unless (symbolp (cdr elem))
926 (insert " " (symbol-name (car elem)) "=\"" (cdr elem) "\"")))
927 (when (mm-handle-id handle)
928 (insert " id=\"" (mm-handle-id handle) "\""))
929 (when (mm-handle-disposition handle)
930 (insert " disposition=" (car (mm-handle-disposition handle))))
932 (insert " buffer=\"" (buffer-name buffer) "\""))
934 (insert " nofile=yes"))
935 (when (mm-handle-description handle)
936 (insert " description=\"" (mm-handle-description handle) "\""))
939 (defun mml-insert-parameter (&rest parameters)
940 "Insert PARAMETERS in a nice way."
942 (dolist (param parameters)
949 (if (> (current-column) 76)
953 (goto-char (1+ end)))
957 ;;; Mode for inserting and editing MML forms
961 (let ((sign (make-sparse-keymap))
962 (encrypt (make-sparse-keymap))
963 (signpart (make-sparse-keymap))
964 (encryptpart (make-sparse-keymap))
965 (map (make-sparse-keymap))
966 (main (make-sparse-keymap)))
967 (define-key map "\C-s" 'mml-secure-message-sign)
968 (define-key map "\C-c" 'mml-secure-message-encrypt)
969 (define-key map "\C-e" 'mml-secure-message-sign-encrypt)
970 (define-key map "\C-p\C-s" 'mml-secure-sign)
971 (define-key map "\C-p\C-c" 'mml-secure-encrypt)
972 (define-key sign "p" 'mml-secure-message-sign-pgpmime)
973 (define-key sign "o" 'mml-secure-message-sign-pgp)
974 (define-key sign "s" 'mml-secure-message-sign-smime)
975 (define-key signpart "p" 'mml-secure-sign-pgpmime)
976 (define-key signpart "o" 'mml-secure-sign-pgp)
977 (define-key signpart "s" 'mml-secure-sign-smime)
978 (define-key encrypt "p" 'mml-secure-message-encrypt-pgpmime)
979 (define-key encrypt "o" 'mml-secure-message-encrypt-pgp)
980 (define-key encrypt "s" 'mml-secure-message-encrypt-smime)
981 (define-key encryptpart "p" 'mml-secure-encrypt-pgpmime)
982 (define-key encryptpart "o" 'mml-secure-encrypt-pgp)
983 (define-key encryptpart "s" 'mml-secure-encrypt-smime)
984 (define-key map "\C-n" 'mml-unsecure-message)
985 (define-key map "f" 'mml-attach-file)
986 (define-key map "b" 'mml-attach-buffer)
987 (define-key map "e" 'mml-attach-external)
988 (define-key map "q" 'mml-quote-region)
989 (define-key map "m" 'mml-insert-multipart)
990 (define-key map "p" 'mml-insert-part)
991 (define-key map "v" 'mml-validate)
992 (define-key map "P" 'mml-preview)
993 (define-key map "s" sign)
994 (define-key map "S" signpart)
995 (define-key map "c" encrypt)
996 (define-key map "C" encryptpart)
997 ;;(define-key map "n" 'mml-narrow-to-part)
998 ;; `M-m' conflicts with `back-to-indentation'.
999 ;; (define-key main "\M-m" map)
1000 (define-key main "\C-c\C-m" map)
1004 mml-menu mml-mode-map ""
1006 ["Attach File..." mml-attach-file
1007 ,@(if (featurep 'xemacs) '(t)
1008 '(:help "Attach a file at point"))]
1009 ["Attach Buffer..." mml-attach-buffer
1010 ,@(if (featurep 'xemacs) '(t)
1011 '(:help "Attach a buffer to the outgoing MIME message"))]
1012 ["Attach External..." mml-attach-external
1013 ,@(if (featurep 'xemacs) '(t)
1014 '(:help "Attach reference to file"))]
1016 ("Change Security Method"
1018 (lambda () (interactive) (setq mml-secure-method "pgpmime"))
1019 ,@(if (featurep 'xemacs) nil
1020 '(:help "Set Security Method to PGP/MIME"))
1022 :selected (equal mml-secure-method "pgpmime") ]
1024 (lambda () (interactive) (setq mml-secure-method "smime"))
1025 ,@(if (featurep 'xemacs) nil
1026 '(:help "Set Security Method to S/MIME"))
1028 :selected (equal mml-secure-method "smime") ]
1030 (lambda () (interactive) (setq mml-secure-method "pgp"))
1031 ,@(if (featurep 'xemacs) nil
1032 '(:help "Set Security Method to inline PGP"))
1034 :selected (equal mml-secure-method "pgp") ] )
1036 ["Sign Message" mml-secure-message-sign t]
1037 ["Encrypt Message" mml-secure-message-encrypt t]
1038 ["Sign and Encrypt Message" mml-secure-message-sign-encrypt t]
1039 ["Encrypt/Sign off" mml-unsecure-message
1040 ,@(if (featurep 'xemacs) '(t)
1041 '(:help "Don't Encrypt/Sign Message"))]
1042 ;; Maybe we could remove these, because people who write MML most probably
1043 ;; don't use the menu:
1044 ["Insert Part..." mml-insert-part
1045 :active (message-in-body-p)]
1046 ["Insert Multipart..." mml-insert-multipart
1047 :active (message-in-body-p)]
1049 ;; Do we have separate encrypt and encrypt/sign commands for parts?
1050 ["Sign Part" mml-secure-sign t]
1051 ["Encrypt Part" mml-secure-encrypt t]
1052 ;;["Narrow" mml-narrow-to-part t]
1053 ["Quote MML in region" mml-quote-region
1054 :active (message-mark-active-p)
1055 ,@(if (featurep 'xemacs) nil
1056 '(:help "Quote MML tags in region"))]
1057 ["Validate MML" mml-validate t]
1058 ["Preview" mml-preview t]
1060 ["Emacs MIME manual" (lambda () (interactive) (message-info 4))
1061 ,@(if (featurep 'xemacs) '(t)
1062 '(:help "Display the Emacs MIME manual"))]
1063 ["PGG manual" (lambda () (interactive) (message-info 16))
1064 ,@(if (featurep 'xemacs) '(t)
1065 '(:help "Display the PGG manual"))]))
1067 (defvar mml-mode nil
1068 "Minor mode for editing MML.")
1070 (defun mml-mode (&optional arg)
1071 "Minor mode for editing MML.
1072 MML is the MIME Meta Language, a minor mode for composing MIME articles.
1073 See Info node `(emacs-mime)Composing'.
1077 (when (set (make-local-variable 'mml-mode)
1078 (if (null arg) (not mml-mode)
1079 (> (prefix-numeric-value arg) 0)))
1080 (add-minor-mode 'mml-mode " MML" mml-mode-map)
1081 (easy-menu-add mml-menu mml-mode-map)
1082 (when (boundp 'dnd-protocol-alist)
1083 (set (make-local-variable 'dnd-protocol-alist)
1084 (append mml-dnd-protocol-alist dnd-protocol-alist)))
1085 (run-hooks 'mml-mode-hook)))
1088 ;;; Helper functions for reading MIME stuff from the minibuffer and
1089 ;;; inserting stuff to the buffer.
1092 (defcustom mml-default-directory mm-default-directory
1093 "The default directory where mml will find files.
1094 If not set, `default-directory' will be used."
1095 :type '(choice directory (const :tag "Default" nil))
1096 :version "23.0" ;; No Gnus
1099 (defun mml-minibuffer-read-file (prompt)
1100 (let* ((completion-ignored-extensions nil)
1101 (file (read-file-name prompt
1102 (or mml-default-directory default-directory)
1104 ;; Prevent some common errors. This is inspired by similar code in
1106 (when (file-directory-p file)
1107 (error "%s is a directory, cannot attach" file))
1108 (unless (file-exists-p file)
1109 (error "No such file: %s" file))
1110 (unless (file-readable-p file)
1111 (error "Permission denied: %s" file))
1114 (defun mml-minibuffer-read-type (name &optional default)
1115 (mailcap-parse-mimetypes)
1116 (let* ((default (or default
1117 (mm-default-file-encoding name)
1118 ;; Perhaps here we should check what the file
1119 ;; looks like, and offer text/plain if it looks
1121 "application/octet-stream"))
1122 (string (completing-read
1123 (format "Content type (default %s): " default)
1124 (mapcar 'list (mailcap-mime-types)))))
1125 (if (not (equal string ""))
1129 (defun mml-minibuffer-read-description ()
1130 (let ((description (read-string "One line description: ")))
1131 (when (string-match "\\`[ \t]*\\'" description)
1132 (setq description nil))
1135 (defun mml-minibuffer-read-disposition (type &optional default filename)
1137 (setq default (mml-content-disposition type filename)))
1138 (let ((disposition (completing-read
1139 (format "Disposition (default %s): " default)
1140 '(("attachment") ("inline") (""))
1141 nil t nil nil default)))
1142 (if (not (equal disposition ""))
1146 (defun mml-quote-region (beg end)
1147 "Quote the MML tags in the region."
1151 ;; Temporarily narrow the region to defend from changes
1152 ;; invalidating END.
1153 (narrow-to-region beg end)
1154 (goto-char (point-min))
1156 (while (re-search-forward
1157 "<#!*/?\\(multipart\\|part\\|external\\|mml\\)" nil t)
1158 ;; Insert ! after the #.
1159 (goto-char (+ (match-beginning 0) 2))
1162 (defun mml-insert-tag (name &rest plist)
1163 "Insert an MML tag described by NAME and PLIST."
1164 (when (symbolp name)
1165 (setq name (symbol-name name)))
1168 (let ((key (pop plist))
1169 (value (pop plist)))
1171 ;; Quote VALUE if it contains suspicious characters.
1172 (when (string-match "[\"'\\~/*;() \t\n]" value)
1173 (setq value (with-output-to-string
1174 (let (print-escape-nonascii)
1176 (insert (format " %s=%s" key value)))))
1179 (defun mml-insert-empty-tag (name &rest plist)
1180 "Insert an empty MML tag described by NAME and PLIST."
1181 (when (symbolp name)
1182 (setq name (symbol-name name)))
1183 (apply #'mml-insert-tag name plist)
1184 (insert "<#/" name ">\n"))
1186 ;;; Attachment functions.
1188 (defcustom mml-dnd-protocol-alist
1189 '(("^file:///" . mml-dnd-attach-file)
1190 ("^file://" . dnd-open-file)
1191 ("^file:" . mml-dnd-attach-file))
1192 "The functions to call when a drop in `mml-mode' is made.
1193 See `dnd-protocol-alist' for more information. When nil, behave
1194 as in other buffers."
1195 :type '(choice (repeat (cons (regexp) (function)))
1196 (const :tag "Behave as in other buffers" nil))
1197 :version "22.1" ;; Gnus 5.10.9
1200 (defcustom mml-dnd-attach-options nil
1201 "Which options should be queried when attaching a file via drag and drop.
1203 If it is a list, valid members are `type', `description' and
1204 `disposition'. `disposition' implies `type'. If it is nil,
1205 don't ask for options. If it is t, ask the user whether or not
1206 to specify options."
1208 (const :tag "Non" nil)
1209 (const :tag "Query" t)
1210 (list :value (type description disposition)
1214 (const disposition))))
1215 :version "22.1" ;; Gnus 5.10.9
1218 (defun mml-attach-file (file &optional type description disposition)
1219 "Attach a file to the outgoing MIME message.
1220 The file is not inserted or encoded until you send the message with
1221 `\\[message-send-and-exit]' or `\\[message-send]'.
1223 FILE is the name of the file to attach. TYPE is its
1224 content-type, a string of the form \"type/subtype\". DESCRIPTION
1225 is a one-line description of the attachment. The DISPOSITION
1226 specifies how the attachment is intended to be displayed. It can
1227 be either \"inline\" (displayed automatically within the message
1228 body) or \"attachment\" (separate from the body)."
1230 (let* ((file (mml-minibuffer-read-file "Attach file: "))
1231 (type (mml-minibuffer-read-type file))
1232 (description (mml-minibuffer-read-description))
1233 (disposition (mml-minibuffer-read-disposition type nil file)))
1234 (list file type description disposition)))
1236 (unless (message-in-body-p) (goto-char (point-max)))
1237 (mml-insert-empty-tag 'part
1240 'disposition (or disposition "attachment")
1241 'description description)))
1243 (defun mml-dnd-attach-file (uri action)
1244 "Attach a drag and drop file.
1246 Ask for type, description or disposition according to
1247 `mml-dnd-attach-options'."
1248 (let ((file (dnd-get-local-file-name uri t)))
1249 (when (and file (file-regular-p file))
1250 (let ((mml-dnd-attach-options mml-dnd-attach-options)
1251 type description disposition)
1252 (setq mml-dnd-attach-options
1253 (when (and (eq mml-dnd-attach-options t)
1256 "Use default type, disposition and description? ")))
1257 '(type description disposition)))
1258 (when (or (memq 'type mml-dnd-attach-options)
1259 (memq 'disposition mml-dnd-attach-options))
1260 (setq type (mml-minibuffer-read-type file)))
1261 (when (memq 'description mml-dnd-attach-options)
1262 (setq description (mml-minibuffer-read-description)))
1263 (when (memq 'disposition mml-dnd-attach-options)
1264 (setq disposition (mml-minibuffer-read-disposition type nil file)))
1265 (mml-attach-file file type description disposition)))))
1267 (defun mml-attach-buffer (buffer &optional type description)
1268 "Attach a buffer to the outgoing MIME message.
1269 See `mml-attach-file' for details of operation."
1271 (let* ((buffer (read-buffer "Attach buffer: "))
1272 (type (mml-minibuffer-read-type buffer "text/plain"))
1273 (description (mml-minibuffer-read-description)))
1274 (list buffer type description)))
1276 (unless (message-in-body-p) (goto-char (point-max)))
1277 (mml-insert-empty-tag 'part 'type type 'buffer buffer
1278 'disposition "attachment"
1279 'description description)))
1281 (defun mml-attach-external (file &optional type description)
1282 "Attach an external file into the buffer.
1283 FILE is an ange-ftp/efs specification of the part location.
1284 TYPE is the MIME type to use."
1286 (let* ((file (mml-minibuffer-read-file "Attach external file: "))
1287 (type (mml-minibuffer-read-type file))
1288 (description (mml-minibuffer-read-description)))
1289 (list file type description)))
1291 (unless (message-in-body-p) (goto-char (point-max)))
1292 (mml-insert-empty-tag 'external 'type type 'name file
1293 'disposition "attachment" 'description description)))
1295 (defun mml-insert-multipart (&optional type)
1296 (interactive (list (completing-read "Multipart type (default mixed): "
1297 '(("mixed") ("alternative") ("digest") ("parallel")
1298 ("signed") ("encrypted"))
1301 (setq type "mixed"))
1302 (mml-insert-empty-tag "multipart" 'type type)
1305 (defun mml-insert-part (&optional type)
1307 (list (mml-minibuffer-read-type "")))
1308 (mml-insert-tag 'part 'type type 'disposition "inline")
1311 (defun mml-preview-insert-mail-followup-to ()
1312 "Insert a Mail-Followup-To header before previewing an article.
1313 Should be adopted if code in `message-send-mail' is changed."
1314 (when (and (message-mail-p)
1315 (message-subscribed-p)
1316 (not (mail-fetch-field "mail-followup-to"))
1317 (message-make-mail-followup-to))
1318 (message-position-on-field "Mail-Followup-To" "X-Draft-From")
1319 (insert (message-make-mail-followup-to))))
1321 (defvar mml-preview-buffer nil)
1323 (autoload 'gnus-make-hashtable "gnus-util")
1324 (autoload 'widget-button-press "wid-edit" nil t)
1325 (declare-function widget-event-point "wid-edit" (event))
1326 ;; If gnus-buffer-configuration is bound this is loaded.
1327 (declare-function gnus-configure-windows "gnus-win" (setting &optional force))
1329 (defun mml-preview (&optional raw)
1330 "Display current buffer with Gnus, in a new buffer.
1331 If RAW, display a raw encoded MIME message.
1333 The window layout for the preview buffer is controled by the variables
1334 `special-display-buffer-names', `special-display-regexps', or
1335 `gnus-buffer-configuration' (the first match made will be used),
1336 or the `pop-to-buffer' function."
1338 (setq mml-preview-buffer (generate-new-buffer
1339 (concat (if raw "*Raw MIME preview of "
1340 "*MIME preview of ") (buffer-name))))
1342 (let* ((buf (current-buffer))
1343 (message-options message-options)
1344 (message-this-is-mail (message-mail-p))
1345 (message-this-is-news (message-news-p))
1346 (message-posting-charset (or (gnus-setup-posting-charset
1348 (message-narrow-to-headers-or-head)
1349 (message-fetch-field "Newsgroups")))
1350 message-posting-charset)))
1351 (message-options-set-recipient)
1352 (when (boundp 'gnus-buffers)
1353 (push mml-preview-buffer gnus-buffers))
1356 (set-buffer mml-preview-buffer)
1358 (insert-buffer-substring buf))
1359 (mml-preview-insert-mail-followup-to)
1360 (let ((message-deletable-headers (if (message-news-p)
1362 message-deletable-headers)))
1363 (message-generate-headers
1364 (copy-sequence (if (message-news-p)
1365 message-required-news-headers
1366 message-required-mail-headers))))
1367 (if (re-search-forward
1368 (concat "^" (regexp-quote mail-header-separator) "\n") nil t)
1369 (replace-match "\n"))
1370 (let ((mail-header-separator ""));; mail-header-separator is removed.
1371 (message-sort-headers)
1374 (when (fboundp 'set-buffer-multibyte)
1375 (let ((s (buffer-string)))
1376 ;; Insert the content into unibyte buffer.
1378 (mm-disable-multibyte)
1380 (let ((gnus-newsgroup-charset (car message-posting-charset))
1381 gnus-article-prepare-hook gnus-original-article-buffer)
1382 (run-hooks 'gnus-article-decode-hook)
1383 (let ((gnus-newsgroup-name "dummy")
1384 (gnus-newsrc-hashtb (or gnus-newsrc-hashtb
1385 (gnus-make-hashtable 5))))
1386 (gnus-article-prepare-display))))
1387 ;; Disable article-mode-map.
1389 (gnus-make-local-hook 'kill-buffer-hook)
1390 (add-hook 'kill-buffer-hook
1392 (mm-destroy-parts gnus-article-mime-handles)) nil t)
1393 (setq buffer-read-only t)
1394 (local-set-key "q" (lambda () (interactive) (kill-buffer nil)))
1395 (local-set-key "=" (lambda () (interactive) (delete-other-windows)))
1399 (widget-button-press (point))))
1400 (local-set-key gnus-mouse-2
1403 (widget-button-press (widget-event-point event) event)))
1404 ;; FIXME: Buffer is in article mode, but most tool bar commands won't
1405 ;; work. Maybe only keep the following icons: search, print, quit
1406 (goto-char (point-min))))
1407 (if (and (not (mm-special-display-p (buffer-name mml-preview-buffer)))
1408 (boundp 'gnus-buffer-configuration)
1409 (assq 'mml-preview gnus-buffer-configuration))
1410 (let ((gnus-message-buffer (current-buffer)))
1411 (gnus-configure-windows 'mml-preview))
1412 (pop-to-buffer mml-preview-buffer)))
1414 (defun mml-validate ()
1415 "Validate the current MML document."
1419 (defun mml-tweak-part (cont)
1421 (let ((tweak (cdr (assq 'tweak cont)))
1426 (or (cdr (assoc tweak mml-tweak-function-alist))
1428 (mml-tweak-type-alist
1429 (let ((alist mml-tweak-type-alist)
1430 (type (or (cdr (assq 'type cont)) "text/plain")))
1432 (if (string-match (caar alist) type)
1433 (setq func (cdar alist)
1435 (setq alist (cdr alist)))))))
1439 (let ((alist mml-tweak-sexp-alist))
1441 (if (eval (caar alist))
1442 (funcall (cdar alist) cont))
1443 (setq alist (cdr alist)))))
1446 (defun mml-tweak-externalize-attachments (cont)
1447 "Tweak attached files as external parts."
1448 (let (filename-cons)
1449 (when (and (eq (car cont) 'part)
1450 (not (cdr (assq 'buffer cont)))
1451 (and (setq filename-cons (assq 'filename cont))
1452 (not (equal (cdr (assq 'nofile cont)) "yes"))))
1453 (setcar cont 'external)
1454 (setcar filename-cons 'name))))
1458 ;;; arch-tag: 583c96cf-1ffe-451b-a5e5-4733ae9ddd12
1459 ;;; mml.el ends here