wl/wl-mime.el

   1 ;;; wl-mime.el --- SEMI implementations of MIME processing on Wanderlust.
   2
   3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4
   5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   6 ;; Keywords: mail, net news
   7
   8 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
   9
  10 ;; This program is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14 ;;
  15 ;; This program is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19 ;;
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24 ;;
  25
  26 ;;; Commentary:
  27 ;;
  28
  29 ;;; Code:
  30 ;;
  31
  32 (require 'mime-view)
  33 (require 'mime-edit)
  34 (require 'mime-play)
  35 (require 'elmo)
  36
  37 (eval-when-compile
  38   (defalias-maybe 'pgg-decrypt-region 'ignore)
  39   (defalias-maybe 'pgg-display-output-buffer 'ignore)
  40   (defalias-maybe 'pgg-verify-region 'ignore))
  41
  42 ;;; Draft
  43
  44 (defalias 'wl-draft-editor-mode 'mime-edit-mode)
  45
  46 (defalias 'wl-draft-decode-message-in-buffer
  47   'mime-edit-decode-message-in-buffer)
  48
  49 (defun wl-draft-yank-current-message-entity ()
  50   "Yank currently displayed message entity.
  51 By setting following-method as yank-content.
  52
  53 If region is active, yank region contents instead. \(this feature is available
  54 if and only if `transient-mark-mode' \(GNU Emacs\) or `zmacs-regions' \(XEmacs\)
  55 has Non-nil value\)"
  56   (let ((wl-draft-buffer (current-buffer))
  57         (mime-view-following-method-alist
  58          (list (cons 'wl-original-message-mode
  59                      (function wl-draft-yank-to-draft-buffer))))
  60         (mime-preview-following-method-alist
  61          (list (cons 'wl-original-message-mode
  62                      (function wl-draft-yank-to-draft-buffer))))
  63         (message-buffer (wl-current-message-buffer)))
  64     (unless message-buffer
  65       (error "No message."))
  66     (if (get-buffer message-buffer)
  67         (save-excursion
  68           (set-buffer (wl-current-message-buffer))
  69           (save-restriction
  70             (widen)
  71             (if (wl-region-exists-p)
  72                 (wl-mime-preview-follow-current-region)
  73               (mime-preview-follow-current-entity)))))))
  74
  75 ;; modified mime-preview-follow-current-entity from mime-view.el
  76 (defun wl-mime-preview-follow-current-region ()
  77   "Write follow message to current region.
  78 It calls following-method selected from variable
  79 `mime-preview-following-method-alist'."
  80   (interactive)
  81   (let ((r-beg (region-beginning))
  82         (r-end (region-end))
  83         (entity (get-text-property (point-min)
  84                                    'mime-view-entity)))
  85     (let* ((mode (mime-preview-original-major-mode 'recursive))
  86            (new-name
  87             (format "%s-active-region" (buffer-name)))
  88            new-buf
  89            (the-buf (current-buffer))
  90            fields)
  91       (save-excursion
  92         (set-buffer (setq new-buf (get-buffer-create new-name)))
  93         (erase-buffer)
  94         (insert ?\n)
  95         (insert-buffer-substring the-buf r-beg r-end)
  96         (goto-char (point-min))
  97         (let ((current-entity
  98                (if (and (eq (mime-entity-media-type entity) 'message)
  99                         (eq (mime-entity-media-subtype entity) 'rfc822))
 100                    (car (mime-entity-children entity))
 101                  entity)))
 102           (while (and current-entity
 103                       (if (and (eq (mime-entity-media-type
 104                                     current-entity) 'message)
 105                                (eq (mime-entity-media-subtype
 106                                     current-entity) 'rfc822))
 107                           nil
 108                         (mime-insert-header current-entity fields)
 109                         t))
 110             (setq fields (std11-collect-field-names)
 111                   current-entity (mime-entity-parent current-entity))
 112             ))
 113         (let ((rest mime-view-following-required-fields-list)
 114               field-name ret)
 115           (while rest
 116             (setq field-name (car rest))
 117             (or (std11-field-body field-name)
 118                 (progn
 119                   (save-excursion
 120                     (set-buffer the-buf)
 121                     (let ((entity (when mime-mother-buffer
 122                                     (set-buffer mime-mother-buffer)
 123                                     (get-text-property (point)
 124                                                        'mime-view-entity))))
 125                       (while (and entity
 126                                   (null (setq ret (mime-entity-fetch-field
 127                                                    entity field-name))))
 128                         (setq entity (mime-entity-parent entity)))))
 129                   (if ret
 130                       (insert (concat field-name ": " ret "\n"))
 131                     )))
 132             (setq rest (cdr rest))
 133             ))
 134         )
 135       (let ((f (cdr (assq mode mime-preview-following-method-alist))))
 136         (if (functionp f)
 137             (funcall f new-buf)
 138           (message
 139            "Sorry, following method for %s is not implemented yet."
 140            mode)
 141           ))
 142       )))
 143
 144 (defalias 'wl-draft-enclose-digest-region 'mime-edit-enclose-digest-region)
 145
 146 (defun wl-draft-preview-message ()
 147   "Preview editing message."
 148   (interactive)
 149   (let* (recipients-message
 150          (current-point (point))
 151          (config-exec-flag wl-draft-config-exec-flag)
 152          (parent-folder wl-draft-parent-folder)
 153          (mime-display-header-hook 'wl-highlight-headers)
 154          (mime-header-encode-method-alist
 155           (append
 156            '((wl-draft-eword-encode-address-list
 157               .  (To Cc Bcc Resent-To Resent-Cc Resent-Bcc From)))
 158            (if (boundp 'mime-header-encode-method-alist)
 159                (symbol-value 'mime-header-encode-method-alist))))
 160          mime-view-ignored-field-list   ; all header.
 161          (mime-edit-translate-buffer-hook
 162           (append
 163            (list
 164             (function
 165              (lambda ()
 166                (let ((wl-draft-config-exec-flag config-exec-flag)
 167                      (wl-draft-parent-folder parent-folder))
 168                  (goto-char current-point)
 169                  (run-hooks 'wl-draft-send-hook)
 170                  (setq recipients-message
 171                        (condition-case err
 172                            (concat "Recipients: "
 173                                    (mapconcat
 174                                     'identity
 175                                     (wl-draft-deduce-address-list
 176                                      (current-buffer)
 177                                      (point-min)
 178                                      (save-excursion
 179                                        (goto-char (point-min))
 180                                        (re-search-forward
 181                                         (concat
 182                                          "^"
 183                                          (regexp-quote mail-header-separator)
 184                                          "$")
 185                                         nil t)
 186                                        (point)))
 187                                     ", "))
 188                          (error
 189                           (kill-buffer (current-buffer))
 190                           (signal (car err) (cdr err)))))))))
 191            mime-edit-translate-buffer-hook)))
 192     (mime-edit-preview-message)
 193     (let ((buffer-read-only nil))
 194       (when wl-highlight-body-too
 195         (wl-highlight-body))
 196       (run-hooks 'wl-draft-preview-message-hook))
 197     (message "%s" recipients-message)))
 198
 199 (defalias 'wl-draft-caesar-region  'mule-caesar-region)
 200
 201 (defalias 'wl-draft-insert-message 'mime-edit-insert-message)
 202
 203 (defalias 'wl-draft-insert-mail 'mime-edit-insert-mail)
 204
 205 ;;; Message
 206
 207 (defun wl-message-decode-mode (outbuf inbuf)
 208   (let ((mime-view-content-header-filter-hook 'wl-highlight-headers)
 209         (mime-display-header-hook 'wl-highlight-headers))
 210     (mime-view-mode nil nil nil inbuf outbuf)))
 211
 212 (defun wl-message-decode-with-all-header (outbuf inbuf)
 213   (let ((mime-view-ignored-field-regexp "^:$")
 214         (mime-view-content-header-filter-hook 'wl-highlight-headers)
 215         (mime-display-header-hook 'wl-highlight-headers)
 216         mime-view-ignored-field-list)
 217     (mime-view-mode nil nil nil inbuf outbuf)))
 218
 219 (defun wl-message-delete-mime-out-buf ()
 220   (let (mime-out-buf mime-out-win)
 221     (if (setq mime-out-buf (get-buffer mime-echo-buffer-name))
 222         (if (setq mime-out-win (get-buffer-window mime-out-buf))
 223             (delete-window mime-out-win)))))
 224
 225 (defun wl-message-request-partial (folder number)
 226   (elmo-set-work-buf
 227    (elmo-message-fetch (wl-folder-get-elmo-folder folder)
 228                        number
 229                        (elmo-make-fetch-strategy 'entire)
 230                        nil
 231                        (current-buffer)
 232                        'unread)
 233    (mime-parse-buffer nil)))
 234
 235 (defalias 'wl-message-read              'mime-preview-scroll-up-entity)
 236 (defalias 'wl-message-next-content      'mime-preview-move-to-next)
 237 (defalias 'wl-message-prev-content      'mime-preview-move-to-previous)
 238 (defalias 'wl-message-play-content      'mime-preview-play-current-entity)
 239 (defalias 'wl-message-extract-content   'mime-preview-extract-current-entity)
 240 (defalias 'wl-message-quit              'mime-preview-quit)
 241 (defalias 'wl-message-button-dispatcher-internal
 242   'mime-button-dispatcher)
 243
 244 (defsubst wl-mime-node-id-to-string (node-id)
 245   (if (consp node-id)
 246       (mapconcat (function (lambda (num) (format "%s" (1+ num))))
 247                  (reverse node-id)
 248                  ".")
 249     "0"))
 250
 251 (defun wl-message-delete-current-part ()
 252   "Delete a part under the cursor from the multipart message."
 253   (interactive)
 254   (save-restriction
 255     (widen)
 256     (let* ((entity (get-text-property (point) 'mime-view-entity))
 257            (node-id (mime-entity-node-id entity))
 258            (header-start (mime-buffer-entity-header-start-internal entity))
 259            (body-end (mime-buffer-entity-body-end-internal entity))
 260            (folder (wl-folder-get-elmo-folder wl-message-buffer-cur-folder))
 261            (number wl-message-buffer-cur-number)
 262            (msgid (elmo-message-field folder number 'message-id))
 263            (orig-buf wl-message-buffer-original-buffer))
 264       (if (eq (luna-class-name entity) 'mime-elmo-imap-entity)
 265           (error "Please fetch the entire message (by typing 'C-u .') and try again"))
 266       (with-current-buffer orig-buf
 267         (unless (string-equal
 268                  (buffer-string)
 269                  (elmo-message-fetch folder number
 270                                      (elmo-make-fetch-strategy 'entire)))
 271           (error "Buffer content differs from actual message")))
 272       (when (and (elmo-folder-writable-p folder)
 273                  (buffer-live-p orig-buf)
 274                  node-id
 275                  (yes-or-no-p
 276                   (format "Do you really want to delete part %s? "
 277                           (wl-mime-node-id-to-string node-id))))
 278         (when (with-temp-buffer
 279                 (insert-buffer orig-buf)
 280                 (delete-region header-start body-end)
 281                 (goto-char header-start)
 282                 (insert "Content-Type: text/plain; charset=US-ASCII\n\n")
 283                 (insert "** This part has been removed by Wanderlust **\n\n")
 284                 (elmo-folder-append-buffer folder))
 285
 286           (elmo-folder-move-messages
 287            folder (list number)
 288            (wl-folder-get-elmo-folder wl-trash-folder))
 289           (when (and (elmo-cache-get-path msgid)
 290                      (file-exists-p (elmo-cache-get-path msgid)))
 291             (delete-file (elmo-cache-get-path msgid)))
 292
 293           (mime-preview-quit)
 294           (wl-summary-delete-messages-on-buffer (list number))
 295           (wl-summary-toggle-disp-msg 'off)
 296           (setq wl-message-buffer nil)
 297           (wl-summary-sync nil "update"))))))
 298
 299 (defun wl-message-decrypt-pgp-nonmime ()
 300   "Decrypt PGP encrypted region"
 301   (interactive)
 302   (require 'pgg)
 303   (save-excursion
 304     (beginning-of-line)
 305     (if (or (re-search-forward "^-+END PGP MESSAGE-+$" nil t)
 306             (re-search-backward "^-+END PGP MESSAGE-+$" nil t))
 307         (let (beg end status)
 308           (setq end (match-end 0))
 309           (if (setq beg (re-search-backward "^-+BEGIN PGP MESSAGE-+$" nil t))
 310               (let ((inhibit-read-only t)
 311                     (buffer-file-coding-system wl-cs-autoconv))
 312                 (setq status (pgg-decrypt-region beg end))
 313                 (pgg-display-output-buffer beg end status))
 314             (message "Cannot find pgp encrypted region")))
 315       (message "Cannot find pgp encrypted region"))))
 316
 317 (defun wl-message-verify-pgp-nonmime ()
 318   "Verify PGP signed region"
 319   (interactive)
 320   (require 'pgg)
 321   (save-excursion
 322     (beginning-of-line)
 323     (if (and (or (re-search-forward "^-+END PGP SIGNATURE-+$" nil t)
 324                  (re-search-backward "^-+END PGP SIGNATURE-+$" nil t))
 325              (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t))
 326         (let (status m-beg)
 327           (let* ((beg (point))
 328                  (situation (mime-preview-find-boundary-info))
 329                  (p-end (aref situation 1))
 330                  (entity (aref situation 2))
 331                  (count 0))
 332             (goto-char p-end)
 333             (while (< beg (point))
 334               (if (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t)
 335                   (setq count (+ count 1))
 336                 (debug)))
 337             (with-temp-buffer
 338               (set-buffer-multibyte nil)
 339               (insert (mime-entity-body entity))
 340               (goto-char (point-max))
 341               (while (> count 0)
 342                 (if (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t)
 343                     (setq count (- count 1))
 344                   (debug)))
 345               (let ((r-beg (point))
 346                     (r-end (re-search-forward "^-+END PGP SIGNATURE-+$" nil t)))
 347                 (if r-end
 348                     (setq status (pgg-verify-region r-beg r-end nil 'fetch))
 349                   (debug)))))
 350           (mime-show-echo-buffer)
 351           (set-buffer mime-echo-buffer-name)
 352           (set-window-start
 353            (get-buffer-window mime-echo-buffer-name)
 354            (point-max))
 355           (setq m-beg (point))
 356           (insert-buffer-substring
 357            (if status pgg-output-buffer pgg-errors-buffer))
 358           (decode-coding-region m-beg (point) wl-cs-autoconv))
 359       (message "Cannot find pgp signed region"))))
 360
 361 ;; XXX: encrypted multipart isn't represented as multipart
 362 (defun wl-mime-preview-application/pgp (parent-entity entity situation)
 363   (require 'pgg)
 364   (goto-char (point-max))
 365   (let ((p (point))
 366         raw-buf to-buf representation-type child-entity)
 367     (goto-char p)
 368     (save-restriction
 369       (narrow-to-region p p)
 370       (setq to-buf (current-buffer))
 371       (with-temp-buffer
 372         (setq raw-buf (current-buffer))
 373         (mime-insert-entity entity)
 374         (when (progn
 375                 (goto-char (point-min))
 376                 (re-search-forward "^-+BEGIN PGP MESSAGE-+$" nil t))
 377           (pgg-decrypt-region (point-min)(point-max))
 378           (delete-region (point-min) (point-max))
 379           (insert-buffer pgg-output-buffer)
 380           (setq representation-type 'elmo-buffer))
 381         (setq child-entity (mime-parse-message
 382                             (mm-expand-class-name representation-type)
 383                             nil
 384                             parent-entity
 385                             (mime-entity-node-id-internal parent-entity)))
 386         (mime-display-entity
 387          child-entity
 388          nil
 389          `((header . visible)
 390            (body . visible)
 391            (entity-button . invisible))
 392          to-buf)))))
 393
 394 (defun wl-mime-preview-application/pgp-encrypted (entity situation)
 395   (let* ((entity-node-id (mime-entity-node-id entity))
 396          (mother (mime-entity-parent entity))
 397          (knum (car entity-node-id))
 398          (onum (if (> knum 0)
 399                    (1- knum)
 400                  (1+ knum)))
 401          (orig-entity (nth onum (mime-entity-children mother))))
 402     (wl-mime-preview-application/pgp entity orig-entity situation)))
 403
 404 ;;; Summary
 405 (defun wl-summary-burst-subr (message-entity target number)
 406   ;; returns new number.
 407   (let (content-type entity)
 408     (setq content-type (mime-entity-content-type message-entity))
 409     (cond ((eq (cdr (assq 'type content-type)) 'multipart)
 410            (dolist (entity (mime-entity-children message-entity))
 411              (setq number (wl-summary-burst-subr
 412                            entity
 413                            target
 414                            number))))
 415           ((and (eq (cdr (assq 'type content-type)) 'message)
 416                 (eq (cdr (assq 'subtype content-type)) 'rfc822))
 417            (message "Bursting...%s" (setq number (+ 1 number)))
 418            (setq entity
 419                  (car (mime-entity-children message-entity)))
 420            (with-temp-buffer
 421              (insert (mime-entity-body message-entity))
 422              (elmo-folder-append-buffer target))))
 423     number))
 424
 425 (defun wl-summary-burst (&optional arg)
 426   "De-capsulate embedded messages in MIME format.
 427 With ARG, ask destination folder."
 428   (interactive "P")
 429   (let ((raw-buf (wl-summary-get-original-buffer))
 430         (view-buf wl-message-buffer)
 431         children message-entity content-type target-name target)
 432     (save-excursion
 433       (setq target wl-summary-buffer-elmo-folder)
 434       (when (or arg (not (elmo-folder-writable-p target)))
 435         (setq target-name (wl-summary-read-folder wl-default-folder "to extract to"))
 436         (setq target (wl-folder-get-elmo-folder target-name)))
 437       (wl-summary-set-message-buffer-or-redisplay)
 438       (with-current-buffer view-buf
 439         (setq message-entity (get-text-property (point-min) 'mime-view-entity)))
 440       (when message-entity
 441         (message "Bursting...")
 442         (with-current-buffer raw-buf
 443           (wl-summary-burst-subr message-entity target 0))
 444         (message "Bursting...done"))
 445       (if (elmo-folder-plugged-p target)
 446           (elmo-folder-check target)))
 447     (when (or (not target-name)
 448               (string= wl-summary-buffer-folder-name target-name))
 449       (save-excursion (wl-summary-sync-update)))))
 450
 451 ;; internal variable.
 452 (defvar wl-mime-save-directory nil "Last saved directory.")
 453 ;;; Yet another save method.
 454 (defun wl-mime-save-content (entity situation)
 455   (let ((filename (read-file-name "Save to file: "
 456                                   (expand-file-name
 457                                    (or (mime-entity-safe-filename entity)
 458                                        ".")
 459                                    (or wl-mime-save-directory
 460                                        wl-temporary-file-directory)))))
 461     (while (file-directory-p filename)
 462       (setq filename (read-file-name "Please set filename (not directory): "
 463                                      filename)))
 464     (if (and (file-exists-p filename)
 465              (not (yes-or-no-p (format "File %s exists. Save anyway? "
 466                                        filename))))
 467         (message "Not saved")
 468       (setq wl-mime-save-directory (file-name-directory filename))
 469       (mime-write-entity-content entity filename))))
 470
 471 ;;; Yet another combine method.
 472 (defun wl-mime-combine-message/partial-pieces (entity situation)
 473   "Internal method for wl to combine message/partial messages automatically."
 474   (interactive)
 475   (let* ((folder (save-excursion
 476                    (set-buffer wl-message-buffer-cur-summary-buffer)
 477                    wl-summary-buffer-elmo-folder))
 478          (mime-display-header-hook 'wl-highlight-headers)
 479          (folder wl-message-buffer-cur-folder)
 480          (id (or (cdr (assoc "id" situation)) ""))
 481          (mother (current-buffer))
 482          (summary-buf wl-message-buffer-cur-summary-buffer)
 483          subject-id overviews
 484          (root-dir (expand-file-name
 485                     (concat "m-prts-" (user-login-name))
 486                     temporary-file-directory))
 487          full-file point)
 488     (setq root-dir (concat root-dir "/" (replace-as-filename id)))
 489     (setq full-file (concat root-dir "/FULL"))
 490     (if (or (file-exists-p full-file)
 491             (not (y-or-n-p "Merge partials? ")))
 492         (with-current-buffer mother
 493           (mime-store-message/partial-piece entity situation)
 494           (setq wl-message-buffer-cur-summary-buffer summary-buf)
 495           (make-variable-buffer-local 'mime-preview-over-to-next-method-alist)
 496           (setq mime-preview-over-to-next-method-alist
 497                 (cons (cons 'mime-show-message-mode 'wl-message-exit)
 498                       mime-preview-over-to-next-method-alist))
 499           (make-variable-buffer-local 'mime-preview-over-to-previous-method-alist)
 500           (setq mime-preview-over-to-previous-method-alist
 501                 (cons (cons 'mime-show-message-mode 'wl-message-exit)
 502                       mime-preview-over-to-previous-method-alist)))
 503       (setq subject-id
 504             (eword-decode-string
 505              (decode-mime-charset-string
 506               (mime-entity-read-field entity 'Subject)
 507               wl-summary-buffer-mime-charset)))
 508       (if (string-match "[0-9\n]+" subject-id)
 509           (setq subject-id (substring subject-id 0 (match-beginning 0))))
 510       (catch 'tag
 511         (elmo-folder-do-each-message-entity (entity folder)
 512           (when (string-match
 513                  (regexp-quote subject-id)
 514                  (elmo-message-entity-field entity 'subject))
 515             (let* ((message
 516                     ;; request message at the cursor in Subject buffer.
 517                     (wl-message-request-partial
 518                      folder
 519                      (elmo-message-entity-number entity)))
 520                    (situation (mime-entity-situation message))
 521                    (the-id (or (cdr (assoc "id" situation)) "")))
 522               (when (string= (downcase the-id)
 523                              (downcase id))
 524                 (with-current-buffer mother
 525                   (mime-store-message/partial-piece message situation))
 526                 (if (file-exists-p full-file)
 527                     (throw 'tag nil))))))
 528         (message "Not all partials found.")))))
 529
 530 (defun wl-mime-display-text/plain (entity situation)
 531   (let ((beg (point)))
 532     (mime-display-text/plain entity situation)
 533     (wl-highlight-message beg (point-max) t t)))
 534
 535 (defun wl-mime-display-header (entity situation)
 536   (let ((elmo-message-ignored-field-list
 537          (if wl-message-buffer-all-header-flag
 538              nil
 539            wl-message-ignored-field-list))
 540         (elmo-message-visible-field-list wl-message-visible-field-list)
 541         (elmo-message-sorted-field-list wl-message-sort-field-list))
 542     (elmo-mime-insert-header entity situation)
 543     (wl-highlight-headers)))
 544
 545 (defun wl-mime-decrypt-application/pgp-encrypted (entity situation)
 546   (let ((summary-buffer wl-message-buffer-cur-summary-buffer)
 547         (original-buffer wl-message-buffer-original-buffer))
 548     (mime-decrypt-application/pgp-encrypted entity situation)
 549     (setq wl-message-buffer-cur-summary-buffer summary-buffer)
 550     (setq wl-message-buffer-original-buffer original-buffer)))
 551
 552
 553 ;;; Setup methods.
 554 (defun wl-mime-setup ()
 555   (set-alist 'mime-preview-quitting-method-alist
 556              'wl-original-message-mode 'wl-message-exit)
 557   (set-alist 'mime-view-over-to-previous-method-alist
 558              'wl-original-message-mode 'wl-message-exit)
 559   (set-alist 'mime-view-over-to-next-method-alist
 560              'wl-original-message-mode 'wl-message-exit)
 561   (set-alist 'mime-preview-over-to-previous-method-alist
 562              'wl-original-message-mode 'wl-message-exit)
 563   (set-alist 'mime-preview-over-to-next-method-alist
 564              'wl-original-message-mode 'wl-message-exit)
 565   (add-hook 'wl-summary-redisplay-hook 'wl-message-delete-mime-out-buf)
 566   (add-hook 'wl-message-exit-hook 'wl-message-delete-mime-out-buf)
 567
 568   (ctree-set-calist-strictly
 569    'mime-preview-condition
 570    '((type . text) (subtype . plain)
 571      (body . visible)
 572      (body-presentation-method . wl-mime-display-text/plain)
 573      (major-mode . wl-original-message-mode)))
 574
 575   (ctree-set-calist-strictly
 576    'mime-preview-condition
 577    '((type . application)(subtype . pgp-encrypted)
 578      (encoding . t)
 579      (body . invisible)
 580      (body-presentation-method . wl-mime-preview-application/pgp-encrypted)
 581      (major-mode . wl-original-message-mode)))
 582
 583   (ctree-set-calist-strictly
 584    'mime-acting-condition
 585    '((type . message) (subtype . partial)
 586      (method .  wl-mime-combine-message/partial-pieces)
 587      (request-partial-message-method . wl-message-request-partial)
 588      (major-mode . wl-original-message-mode)))
 589
 590   (ctree-set-calist-strictly
 591    'mime-acting-condition
 592    '((type . application) (subtype . pgp-encrypted)
 593      (method . wl-mime-decrypt-application/pgp-encrypted)
 594      (major-mode . wl-original-message-mode)))
 595
 596   (ctree-set-calist-strictly
 597    'mime-acting-condition
 598    '((mode . "extract")
 599      (major-mode . wl-original-message-mode)
 600      (method . wl-mime-save-content)))
 601   (set-alist 'mime-preview-following-method-alist
 602              'wl-original-message-mode
 603              (function wl-message-follow-current-entity))
 604   (set-alist 'mime-view-following-method-alist
 605              'wl-original-message-mode
 606              (function wl-message-follow-current-entity))
 607   (set-alist 'mime-edit-message-inserter-alist
 608              'wl-draft-mode (function wl-draft-insert-current-message))
 609   (set-alist 'mime-edit-mail-inserter-alist
 610              'wl-draft-mode (function wl-draft-insert-get-message))
 611   (set-alist 'mime-edit-split-message-sender-alist
 612              'wl-draft-mode
 613              (cdr (assq 'mail-mode mime-edit-split-message-sender-alist)))
 614   (set-alist 'mime-raw-representation-type-alist
 615              'wl-original-message-mode 'binary)
 616   ;; Sort and highlight header fields.
 617   (or wl-message-ignored-field-list
 618       (setq wl-message-ignored-field-list
 619             mime-view-ignored-field-list))
 620   (or wl-message-visible-field-list
 621       (setq wl-message-visible-field-list
 622             mime-view-visible-field-list))
 623   (set-alist 'mime-header-presentation-method-alist
 624              'wl-original-message-mode
 625              'wl-mime-display-header)
 626   ;; To avoid overriding wl-draft-mode-map.
 627   (when (boundp 'mime-setup-signature-key-alist)
 628     (unless (assq 'wl-draft-mode mime-setup-signature-key-alist)
 629       (setq mime-setup-signature-key-alist
 630             (cons '(wl-draft-mode . "\C-c\C-w")
 631                   mime-setup-signature-key-alist)))))
 632
 633 (require 'product)
 634 (product-provide (provide 'wl-mime) (require 'wl-version))
 635
 636 ;;; wl-mime.el ends here