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