wl/wl-message.el

   1 ;;; wl-message.el -- Message displaying modules for 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 'wl-vars)
  33 (require 'wl-highlight)
  34
  35 (eval-when-compile
  36   (if wl-use-semi
  37       (progn
  38         (require 'wl-mime)
  39         (require 'mime-view)
  40         (require 'mmelmo-imap4))
  41     (require 'tm-wl))
  42   (defalias-maybe 'event-window 'ignore)
  43   (defalias-maybe 'posn-window 'ignore)
  44   (defalias-maybe 'event-start 'ignore)
  45   (defalias-maybe 'mime-open-entity 'ignore))
  46
  47 (defvar wl-original-buf-name "*Message*")
  48 (defvar wl-message-buf-name "Message")
  49 (defvar wl-message-buffer-cur-summary-buffer nil)
  50 (defvar wl-message-buffer-cur-folder nil)
  51 (defvar wl-message-buffer-cur-number nil)
  52
  53 (defvar wl-original-buffer-cur-folder nil)
  54 (defvar wl-original-buffer-cur-number nil)
  55 (defvar wl-original-buffer-cur-msgdb  nil)
  56
  57 (defvar mmelmo-imap4-skipped-parts)
  58
  59 (make-variable-buffer-local 'wl-message-buffer-cur-folder)
  60 (make-variable-buffer-local 'wl-message-buffer-cur-number)
  61
  62 (defvar wl-fixed-window-configuration nil)
  63
  64 (defun wl-message-buffer-window ()
  65   (let* ((mes-buf (concat "^" (default-value 'wl-message-buf-name)))
  66          (start-win (selected-window))
  67          (cur-win start-win))
  68     (catch 'found
  69       (while (progn
  70                (setq cur-win (next-window cur-win))
  71                (if (string-match mes-buf (buffer-name (window-buffer cur-win)))
  72                    (throw 'found cur-win))
  73                (not (eq cur-win start-win)))))))
  74
  75 (defun wl-select-buffer (buffer)
  76   (let ((gbw (or (get-buffer-window buffer)
  77                  (wl-message-buffer-window)))
  78         (sum (car wl-message-window-size))
  79         (mes (cdr wl-message-window-size))
  80         whi)
  81     (when (and gbw
  82                (not (eq (save-excursion (set-buffer (window-buffer gbw))
  83                                         wl-message-buffer-cur-summary-buffer)
  84                         (current-buffer))))
  85       (delete-window gbw)
  86       (run-hooks 'wl-message-window-deleted-hook)
  87       (setq gbw nil))
  88     (if gbw
  89         (select-window gbw)
  90 ;;;   (if (or (null mes)
  91 ;;;           wl-stay-folder-window)
  92 ;;;       (delete-other-windows))
  93       (when wl-fixed-window-configuration
  94         (delete-other-windows)
  95         (and wl-stay-folder-window
  96              (wl-summary-toggle-disp-folder)))
  97       (setq whi (1- (window-height)))
  98       (if mes
  99           (progn
 100             (let ((total (+ sum mes)))
 101               (setq sum (max window-min-height (/ (* whi sum) total)))
 102               (setq mes (max window-min-height (/ (* whi mes) total))))
 103             (if (< whi (+ sum mes))
 104                 (enlarge-window (- (+ sum mes) whi)))))
 105       (split-window (get-buffer-window (current-buffer)) sum)
 106       (other-window 1))
 107     (switch-to-buffer buffer)))
 108
 109 ;;
 110 ;; called by wl-summary-mode buffer
 111 ;;
 112 (defvar wl-message-func-called-hook nil)
 113
 114 (defun wl-message-scroll-down (amount)
 115   (let ((view-message-buffer (get-buffer-create wl-message-buf-name))
 116         (cur-buf (current-buffer)))
 117     (wl-select-buffer view-message-buffer)
 118     (if (bobp)
 119         ()
 120       (scroll-down))
 121     (select-window (get-buffer-window cur-buf))))
 122
 123 (defun wl-message-scroll-up (amount)
 124   (let ((view-message-buffer (get-buffer-create wl-message-buf-name))
 125         (cur-buf (current-buffer)))
 126     (wl-select-buffer view-message-buffer)
 127     (save-excursion
 128       (save-restriction
 129         (widen)
 130         (forward-page 1)
 131         (if (pos-visible-in-window-p (point))
 132             (wl-message-narrow-to-page 1)))) ; Go to next page.
 133     (if (eobp)
 134         ()
 135       (scroll-up))
 136     (select-window (get-buffer-window cur-buf))))
 137
 138 (defun wl-message-follow-current-entity (buffer)
 139   "Follow to current message."
 140   (wl-draft-reply (wl-message-get-original-buffer)
 141                   nil wl-message-buffer-cur-summary-buffer) ; reply to all
 142   (let ((mail-reply-buffer buffer))
 143     (wl-draft-yank-from-mail-reply-buffer nil)))
 144
 145 (defun wl-message-original-mode ()
 146   (setq major-mode 'wl-message-original-mode)
 147   (setq mode-name "Original")
 148   (setq buffer-read-only t)
 149   (if (fboundp 'set-buffer-file-coding-system)
 150       (set-buffer-file-coding-system wl-cs-noconv)))
 151
 152 (defun wl-message-mode ()
 153   (interactive)
 154   (setq major-mode 'wl-message-mode)
 155   (setq buffer-read-only t)
 156   (setq mode-name "Message"))
 157
 158 (defun wl-message-get-buffer-create ()
 159   (let ((buf-name wl-message-buf-name))
 160     (or (get-buffer buf-name)
 161         (save-excursion
 162           (set-buffer (get-buffer-create buf-name))
 163           (wl-message-mode)
 164           (run-hooks 'wl-message-buffer-created-hook)
 165           (get-buffer buf-name)))))
 166
 167 (defun wl-message-original-get-buffer-create ()
 168   (or (get-buffer wl-original-buf-name)
 169       (save-excursion
 170         (set-buffer (get-buffer-create wl-original-buf-name))
 171         (wl-message-original-mode)
 172         (get-buffer wl-original-buf-name))))
 173
 174 (defun wl-message-exit ()
 175   (interactive)
 176   (let (summary-buf summary-win)
 177     (if (setq summary-buf wl-message-buffer-cur-summary-buffer)
 178         (if (setq summary-win (get-buffer-window summary-buf))
 179             (select-window summary-win)
 180           (switch-to-buffer summary-buf)
 181           (wl-select-buffer wl-message-buf-name)
 182           (select-window (get-buffer-window summary-buf))))
 183     (run-hooks 'wl-message-exit-hook)))
 184
 185 (defvar wl-message-mode-map nil)
 186 (if wl-message-mode-map
 187     ()
 188   (setq wl-message-mode-map (make-sparse-keymap))
 189   (define-key wl-message-mode-map "q" 'wl-message-exit)
 190   (define-key wl-message-mode-map "n" 'wl-message-exit)
 191   (define-key wl-message-mode-map "p" 'wl-message-exit))
 192
 193 (defun wl-message-decode (outbuf inbuf flag)
 194   (cond
 195    ((eq flag 'all-header)
 196     (save-excursion
 197       (set-buffer inbuf)
 198       (let ((buffer-read-only nil))
 199         (decode-mime-charset-region (point-min)
 200                                     (save-excursion
 201                                       (goto-char (point-min))
 202                                       (re-search-forward "^$" nil t)
 203                                       (point))
 204                                     wl-mime-charset)))
 205     (wl-message-decode-with-all-header outbuf inbuf))
 206    ((eq flag 'no-mime)
 207     (save-excursion
 208       (set-buffer inbuf)
 209       (let ((buffer-read-only nil))
 210         (save-excursion
 211           (set-buffer outbuf)
 212           (elmo-set-buffer-multibyte nil))
 213         (copy-to-buffer outbuf (point-min) (point-max))
 214         (set-buffer outbuf)
 215         (use-local-map wl-message-mode-map)
 216         (elmo-set-buffer-multibyte default-enable-multibyte-characters)
 217 ;;;     (decode-mime-charset-region (point-min) (point-max) wl-mime-charset)
 218         ;; we can call decode-coding-region() directly, because multibyte flag is t.
 219         (decode-coding-region (point-min) (point-max) wl-cs-autoconv)
 220         (wl-highlight-message (point-min)
 221                               (save-excursion
 222                                 (goto-char (point-min))
 223                                 (re-search-forward "^$" nil t)) nil))))
 224    (t                                   ; normal
 225     (save-excursion
 226       (set-buffer inbuf)
 227       (let ((buffer-read-only nil))
 228         (decode-mime-charset-region (point-min)
 229                                     (save-excursion
 230                                       (goto-char (point-min))
 231                                       (re-search-forward "^$" nil t)
 232                                       (point))
 233                                     wl-mime-charset)))
 234     (wl-message-decode-mode outbuf inbuf))))
 235
 236 (defun wl-message-prev-page (&optional lines)
 237   "Scroll down this message.  Returns non-nil if top of message."
 238   (interactive)
 239   (let ((cur-buf (current-buffer))
 240         (view-message-buffer (get-buffer-create wl-message-buf-name))
 241         ret-val)
 242     (wl-select-buffer view-message-buffer)
 243     (move-to-window-line 0)
 244     (if (and wl-break-pages
 245              (bobp)
 246              (not (save-restriction (widen) (bobp))))
 247         (progn
 248           (wl-message-narrow-to-page -1)
 249           (goto-char (point-max))
 250           (recenter -1))
 251       (if (not (bobp))
 252           (scroll-down lines)
 253         (setq ret-val t)))
 254     (select-window (get-buffer-window cur-buf))
 255     ret-val))
 256
 257 (static-if (fboundp 'luna-make-entity)
 258     (defsubst wl-message-make-mime-entity (backend number backend folder msgdb)
 259       (luna-make-entity (mm-expand-class-name 'elmo)
 260                         :location (get-buffer-create
 261                                    (concat mmelmo-entity-buffer-name "0"))
 262                         :imap (eq backend 'elmo-imap4)
 263                         :folder folder
 264                         :number number
 265                         :msgdb msgdb :size 0))
 266   (defsubst wl-message-make-mime-entity (backend number backend folder msgdb)
 267     (mime-open-entity backend (list folder number msgdb nil))))
 268
 269 (defun wl-message-next-page (&optional lines)
 270   "Scroll up this message.  Returns non-nil if bottom of message."
 271   (interactive)
 272   (let ((cur-buf (current-buffer))
 273         (view-message-buffer (get-buffer-create wl-message-buf-name))
 274         ret-val)
 275     (wl-select-buffer view-message-buffer)
 276     (move-to-window-line -1)
 277     (if (save-excursion
 278           (end-of-line)
 279           (and (pos-visible-in-window-p)
 280                (eobp)))
 281         (if (or (null wl-break-pages)
 282                 (save-excursion
 283                   (save-restriction
 284                     (widen) (forward-line) (eobp))))
 285             (setq ret-val t)
 286           (wl-message-narrow-to-page 1)
 287           (setq ret-val nil))
 288       (condition-case ()
 289           (static-if (boundp 'window-pixel-scroll-increment)
 290               ;; XEmacs 21.2.20 and later.
 291               (let (window-pixel-scroll-increment)
 292                 (scroll-up lines))
 293             (scroll-up lines))
 294         (end-of-buffer
 295          (goto-char (point-max))))
 296       (setq ret-val nil))
 297     (select-window (get-buffer-window cur-buf))
 298     ret-val
 299     ))
 300
 301 (defun wl-message-narrow-to-page (&optional arg)
 302   (interactive "P")
 303   (setq arg (if arg (prefix-numeric-value arg) 0))
 304   (save-excursion
 305     (condition-case ()
 306         (forward-page -1)               ; Beginning of current page.
 307       (beginning-of-buffer
 308        (goto-char (point-min))))
 309     (forward-char 1)  ; for compatibility with emacs-19.28 and emacs-19.29
 310     (widen)
 311     (cond
 312      ((> arg 0) (forward-page arg))
 313      ((< arg 0) (forward-page (1- arg))))
 314     (forward-page)
 315     (if wl-break-pages
 316         (narrow-to-region (point)
 317                           (progn
 318                             (forward-page -1)
 319                             (if (and (eolp) (not (bobp)))
 320                                 (forward-line))
 321                             (point)))) ))
 322
 323 (defun wl-message-toggle-disp-summary ()
 324   (interactive)
 325   (let ((summary-buf (get-buffer wl-message-buffer-cur-summary-buffer))
 326         summary-win)
 327     (if (and summary-buf
 328              (buffer-live-p summary-buf))
 329         (if (setq summary-win (get-buffer-window summary-buf))
 330             (delete-window summary-win)
 331           (switch-to-buffer summary-buf)
 332           (wl-select-buffer wl-message-buf-name))
 333       (wl-summary-goto-folder-subr wl-message-buffer-cur-folder 'no-sync
 334                                    nil nil t)
 335                                         ; no summary-buf
 336       (let ((sum-buf (current-buffer)))
 337         (wl-select-buffer wl-message-buf-name)
 338         (setq wl-message-buffer-cur-summary-buffer sum-buf)))))
 339
 340 (defun wl-message-normal-get-original-buffer ()
 341   (let ((ret-val (get-buffer wl-original-buf-name)))
 342     (if (not ret-val)
 343         (save-excursion
 344           (set-buffer (setq ret-val
 345                             (get-buffer-create wl-original-buf-name)))
 346           (wl-message-original-mode)))
 347     ret-val))
 348
 349
 350 (if wl-use-semi
 351     (defalias 'wl-message-get-original-buffer
 352       'mmelmo-get-original-buffer)
 353   (defalias 'wl-message-get-original-buffer
 354     'wl-message-normal-get-original-buffer))
 355
 356 (defvar wl-message-redisplay-func 'wl-normal-message-redisplay)
 357 (defvar wl-message-cache-used nil) ;whether cache is used or not.
 358
 359 (defun wl-message-redisplay (folder number flag msgdb &optional force-reload)
 360   (let ((default-mime-charset wl-mime-charset)
 361         (buffer-read-only nil))
 362     (setq wl-message-cache-used nil)
 363     (if wl-message-redisplay-func
 364         (funcall wl-message-redisplay-func
 365                  folder number flag msgdb force-reload))))
 366
 367 ;; nil means don't fetch all.
 368 (defun wl-message-decide-backend (folder number message-id size)
 369   (let ((dont-do-that (and
 370                        (not (setq wl-message-cache-used
 371                                   (or
 372                                    (elmo-buffer-cache-hit
 373                                     (list folder number message-id))
 374                                    (elmo-cache-exists-p message-id
 375                                                         folder number))))
 376                        (integerp size)
 377                        (not (elmo-local-file-p folder number))
 378                        wl-fetch-confirm-threshold
 379                        (>= size wl-fetch-confirm-threshold)
 380                        (not (y-or-n-p
 381                              (format "Fetch entire message? (%dbytes)"
 382                                      size))))))
 383     (message "")
 384     (cond ((and dont-do-that
 385                 (eq (elmo-folder-number-get-type folder number) 'imap4)
 386                 (not (and (elmo-use-cache-p folder number)
 387                           (elmo-cache-exists-p message-id folder number))))
 388            'elmo-imap4)
 389           (t (if (not dont-do-that) 'elmo)))))
 390
 391 (defmacro wl-message-original-buffer-folder ()
 392   wl-original-buffer-cur-folder)
 393
 394 (defmacro wl-message-original-buffer-number ()
 395   wl-original-buffer-cur-number)
 396
 397 (defun wl-message-set-original-buffer-information (folder number)
 398   (when (or (not (string= folder (or wl-original-buffer-cur-folder "")))
 399             (not (eq number (or wl-original-buffer-cur-number 0))))
 400     (setq wl-original-buffer-cur-folder folder)
 401     (setq wl-original-buffer-cur-number number)))
 402
 403 ;; Works on FLIM-1.9.0/SEMI-1.8.2 or later (maybe).
 404 (defun wl-mmelmo-message-redisplay (folder number flag msgdb
 405                                            &optional force-reload)
 406   (let* ((cur-buf (current-buffer))
 407          (view-message-buffer (wl-message-get-buffer-create))
 408          (message-id (cdr (assq number
 409                                 (elmo-msgdb-get-number-alist msgdb))))
 410          (size (elmo-msgdb-overview-entity-get-size
 411                 (elmo-msgdb-overview-get-entity number msgdb)))
 412          (backend (wl-message-decide-backend folder number message-id size))
 413          cur-entity ret-val header-end real-fld-num summary-win)
 414     (require 'mmelmo)
 415     (wl-select-buffer view-message-buffer)
 416     (set-buffer view-message-buffer)
 417     (unwind-protect
 418         (progn
 419           (setq wl-message-buffer-cur-summary-buffer cur-buf)
 420           (setq wl-message-buffer-cur-folder folder)
 421           (setq wl-message-buffer-cur-number number)
 422           (setq buffer-read-only nil)
 423           (erase-buffer)
 424           (if backend
 425               (let (mime-display-header-hook ;; bind to nil...
 426                     (wl-message-ignored-field-list
 427                      (if (eq flag 'all-header)
 428                          nil
 429                        wl-message-ignored-field-list))
 430                     (mmelmo-force-reload force-reload)
 431                     (mmelmo-imap4-threshold wl-fetch-confirm-threshold))
 432                 (setq real-fld-num (elmo-get-real-folder-number
 433                                     folder number))
 434                 (setq cur-entity
 435                       (wl-message-make-mime-entity
 436                        backend
 437                        (if (eq backend 'elmo-imap4)
 438                            (cdr real-fld-num)
 439                          number)
 440                        backend
 441                        (if (eq backend 'elmo-imap4)
 442                            (car real-fld-num)
 443                          folder)
 444                        msgdb))
 445                 (setq mmelmo-imap4-skipped-parts nil)
 446                 ;; mime-display-message sets buffer-read-only variable as t.
 447                 ;; which makes buffer read-only status confused...
 448                 (mime-display-message cur-entity view-message-buffer
 449                                       nil nil 'mmelmo-original-mode)
 450                 (if mmelmo-imap4-skipped-parts
 451                     (progn
 452                       (message "Skipped fetching of %s."
 453                                (mapconcat
 454                                 (lambda (x)
 455                                   (format "[%s]" x))
 456                                 mmelmo-imap4-skipped-parts ","))))
 457                 (if (and (eq backend 'elmo-imap4)
 458                          (null mmelmo-imap4-skipped-parts))
 459                     (message "No required part was skipped."))
 460                 (setq ret-val (not (eq backend 'elmo-imap4))))
 461             (message "Skipped fetching.")
 462             (setq ret-val nil)))
 463       (setq buffer-read-only nil)
 464       (wl-message-set-original-buffer-information folder number)
 465       (wl-message-overload-functions)
 466       ;; highlight body
 467       (when wl-highlight-body-too
 468         (wl-highlight-body))
 469       (condition-case ()
 470           (wl-message-narrow-to-page)
 471         (error nil));; ignore errors.
 472       (setq mode-line-buffer-identification
 473             (format "Wanderlust: << %s / %s >>"
 474                     (if (memq 'modeline wl-use-folder-petname)
 475                         (wl-folder-get-petname folder)
 476                       folder) number))
 477       (goto-char (point-min))
 478       (unwind-protect
 479           (save-excursion
 480             (run-hooks 'wl-message-redisplay-hook))
 481         ;; go back to summary mode
 482         (set-buffer-modified-p nil)
 483         (setq buffer-read-only t)
 484         (set-buffer cur-buf)
 485         (setq summary-win (get-buffer-window cur-buf))
 486         (if (window-live-p summary-win)
 487             (select-window summary-win))))
 488     ret-val
 489     ))
 490
 491 (defun wl-normal-message-redisplay (folder number flag msgdb
 492                                            &optional force-reload)
 493   (interactive)
 494   (let* ((cur-buf (current-buffer))
 495          (original-message-buffer (wl-message-get-original-buffer))
 496          (view-message-buffer (wl-message-get-buffer-create))
 497          (message-id (cdr (assq number
 498                                 (elmo-msgdb-get-number-alist msgdb))))
 499          (size (elmo-msgdb-overview-entity-get-size
 500                 (elmo-msgdb-overview-get-entity number msgdb)))
 501          header-end ret-val summary-win)
 502     (wl-select-buffer view-message-buffer)
 503     (unwind-protect
 504         (progn
 505           (setq wl-message-buffer-cur-summary-buffer cur-buf)
 506           (setq wl-message-buffer-cur-folder folder)
 507           (setq wl-message-buffer-cur-number number)
 508           (setq buffer-read-only nil)
 509           (erase-buffer)
 510           (if (or (eq (elmo-folder-number-get-type folder number) 'localdir)
 511                   (not (and (not
 512                              (setq wl-message-cache-used
 513                                   (or
 514                                    (elmo-buffer-cache-hit
 515                                     (list folder number message-id))
 516                                    (elmo-cache-exists-p message-id
 517                                                         folder number))))
 518                             (integerp size)
 519                             wl-fetch-confirm-threshold
 520                             (>= size wl-fetch-confirm-threshold)
 521                             (not (y-or-n-p
 522                                   (format "Fetch entire message? (%dbytes)"
 523                                           size))))))
 524               (progn
 525                 (save-excursion
 526                   (set-buffer original-message-buffer)
 527                   (let ((buffer-read-only nil))
 528                     (elmo-read-msg-with-buffer-cache
 529                      folder number original-message-buffer msgdb force-reload)))
 530                 ;; decode MIME message.
 531                 (wl-message-decode
 532                  view-message-buffer
 533                  original-message-buffer flag)
 534                 (setq ret-val t))
 535             (save-excursion
 536               (set-buffer view-message-buffer)
 537               (insert "\n\n"))))
 538       (setq buffer-read-only nil)
 539       (wl-message-set-original-buffer-information folder number)
 540       (wl-message-overload-functions)
 541       ;; highlight body
 542       (and wl-highlight-body-too (wl-highlight-body))
 543       (condition-case ()
 544           (wl-message-narrow-to-page)
 545         (error nil)) ; ignore errors.
 546       (setq mode-line-buffer-identification
 547             (format "Wanderlust: << %s / %s >>"
 548                     (if (memq 'modeline wl-use-folder-petname)
 549                         (wl-folder-get-petname folder)
 550                       folder)
 551                     number))
 552       (goto-char (point-min))
 553       (unwind-protect
 554           (run-hooks 'wl-message-redisplay-hook)
 555         ;; go back to summary mode
 556         (set-buffer-modified-p nil)
 557         (setq buffer-read-only t)
 558         (set-buffer cur-buf)
 559         (setq summary-win (get-buffer-window cur-buf))
 560         (if (window-live-p summary-win)
 561             (select-window summary-win)))
 562       ret-val
 563       )))
 564
 565 (defvar wl-message-button-map (make-sparse-keymap))
 566
 567 (defun wl-message-add-button (from to function &optional data)
 568   "Create a button between FROM and TO with callback FUNCTION and DATA."
 569   (add-text-properties
 570    from to
 571    (nconc (list 'wl-message-button-callback function)
 572           (if data
 573               (list 'wl-message-button-data data))))
 574   (let ((ov (make-overlay from to)))
 575     (overlay-put ov 'mouse-face 'highlight)
 576     (overlay-put ov 'local-map wl-message-button-map)
 577     (overlay-put ov 'evaporate t)))
 578
 579 (defun wl-message-button-dispatcher (event)
 580   "Select the button under point."
 581   (interactive "@e")
 582   (mouse-set-point event)
 583   (let ((callback (get-text-property (point) 'wl-message-button-callback))
 584         (data (get-text-property (point) 'wl-message-button-data)))
 585     (if callback
 586         (funcall callback data)
 587       (wl-message-button-dispatcher-internal event))))
 588
 589 (defun wl-message-button-refer-article (data)
 590   "Read article specified by Message-ID DATA at point."
 591   (switch-to-buffer-other-window
 592    wl-message-buffer-cur-summary-buffer)
 593   (if (wl-summary-jump-to-msg-by-message-id data)
 594       (wl-summary-redisplay)))
 595
 596 (defun wl-message-refer-article-or-url (e)
 597   "Read article specified by message-id around point.
 598 If failed, attempt to execute button-dispatcher."
 599   (interactive "e")
 600   (let ((window (get-buffer-window (current-buffer)))
 601         mouse-window point beg end msg-id)
 602     (unwind-protect
 603         (progn
 604           (mouse-set-point e)
 605           (setq mouse-window (get-buffer-window (current-buffer)))
 606           (setq point (point))
 607           (setq beg (save-excursion (beginning-of-line) (point)))
 608           (setq end (save-excursion (end-of-line) (point)))
 609           (search-forward ">" end t)      ;Move point to end of "<....>".
 610           (if (and (re-search-backward "\\(<[^<> \t\n]+@[^<> \t\n]+>\\)"
 611                                        beg t)
 612                    (not (string-match "mailto:"
 613                                       (setq msg-id (wl-match-buffer 1)))))
 614               (progn
 615                 (goto-char point)
 616                 (switch-to-buffer-other-window
 617                  wl-message-buffer-cur-summary-buffer)
 618                 (if (wl-summary-jump-to-msg-by-message-id msg-id)
 619                     (wl-summary-redisplay)))
 620             (wl-message-button-dispatcher-internal e)))
 621       (if (eq mouse-window (get-buffer-window (current-buffer)))
 622           (select-window window)))))
 623
 624 (defun wl-message-uu-substring (buf outbuf &optional first last)
 625   (save-excursion
 626     (set-buffer buf)
 627     (search-forward "\n\n")
 628     (let ((sp (point))
 629           ep filename case-fold-search)
 630       (catch 'done
 631         (if first
 632             (progn
 633               (if (re-search-forward "^begin[ \t]+[0-9]+[ \t]+\\([^ ].*\\)" nil t)
 634                   (setq filename (buffer-substring (match-beginning 1)(match-end 1)))
 635                 (throw 'done nil)))
 636           (re-search-forward "^M.*$" nil t)) ; uuencoded string
 637         (beginning-of-line)
 638         (setq sp (point))
 639         (goto-char (point-max))
 640         (if last
 641             (re-search-backward "^end" sp t)
 642           (re-search-backward "^M.*$" sp t)) ; uuencoded string
 643         (forward-line 1)
 644         (setq ep (point))
 645         (set-buffer outbuf)
 646         (goto-char (point-max))
 647         (insert-buffer-substring buf sp ep)
 648         (set-buffer buf)
 649         filename))))
 650
 651 (require 'product)
 652 (product-provide (provide 'wl-message) (require 'wl-version))
 653
 654 ;;; wl-message.el ends here