wl/wl-message.el

   1 ;;; wl-message.el -- Message displaying modules for Wanderlust.
   2
   3 ;; Copyright 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4
   5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   6 ;; Keywords: mail, net news
   7 ;; Time-stamp: <2000-03-17 10:19:41 teranisi>
   8
   9 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
  10
  11 ;; This program is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15 ;;
  16 ;; This program is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20 ;;
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25 ;;
  26
  27 ;;; Commentary:
  28 ;;
  29
  30 ;;; Code:
  31 ;;
  32
  33 (require 'wl-vars)
  34 (require 'wl-highlight)
  35
  36 (eval-when-compile
  37   (if wl-use-semi
  38       (progn
  39         (require 'wl-mime)
  40         (require 'mime-view)
  41         (require 'mmelmo-imap4))
  42     (require 'tm-wl))
  43   (mapcar
  44    (function
  45     (lambda (symbol)
  46       (unless (boundp symbol)
  47         (set (make-local-variable symbol) nil))))
  48    '(mime-view-ignored-field-list mmelmo-imap4-skipped-parts))
  49   (defun-maybe event-window (a))
  50   (defun-maybe posn-window (a))
  51   (defun-maybe event-start (a))
  52   (defun-maybe mime-open-entity (a b)))
  53
  54 (defvar wl-original-buf-name "*Message*")
  55 (defvar wl-message-buf-name "Message")
  56 (defvar wl-message-buffer-cur-summary-buffer nil)
  57 (defvar wl-message-buffer-cur-folder nil)
  58 (defvar wl-message-buffer-cur-number nil)
  59
  60 (defvar wl-original-buffer-cur-folder nil)
  61 (defvar wl-original-buffer-cur-number nil)
  62 (defvar wl-original-buffer-cur-msgdb  nil)
  63
  64 (mapcar
  65  (function make-variable-buffer-local)
  66  (list 'wl-message-buffer-cur-folder
  67        'wl-message-buffer-cur-number))
  68
  69 (provide 'wl-message)
  70
  71 (defvar wl-fixed-window-configuration nil)
  72
  73 (defun wl-message-buffer-window ()
  74   (let* ((mes-buf (concat "^" (default-value 'wl-message-buf-name)))
  75          (start-win (selected-window))
  76          (cur-win start-win))
  77     (catch 'found
  78       (while (progn
  79                (setq cur-win (next-window cur-win))
  80                (if (string-match mes-buf (buffer-name (window-buffer cur-win)))
  81                    (throw 'found cur-win))
  82                (not (eq cur-win start-win)))))))
  83
  84 (defun wl-select-buffer (buffer)
  85   (let ((gbw (or (get-buffer-window buffer)
  86                  (wl-message-buffer-window)))
  87         (sum (car wl-message-window-size))
  88         (mes (cdr wl-message-window-size))
  89         whi)
  90     (when (and gbw
  91                (not (eq (save-excursion (set-buffer (window-buffer gbw))
  92                                         wl-message-buffer-cur-summary-buffer)
  93                         (current-buffer))))
  94       (delete-window gbw)
  95       (run-hooks 'wl-message-window-deleted-hook)
  96       (setq gbw nil))
  97     (if gbw
  98         (select-window gbw)
  99 ;      (if (or (null mes)
 100 ;             wl-stay-folder-window)
 101 ;         (delete-other-windows))
 102       (when wl-fixed-window-configuration
 103         (delete-other-windows)
 104         (and wl-stay-folder-window
 105              (wl-summary-toggle-disp-folder)))
 106       (setq whi (1- (window-height)))
 107       (if mes
 108           (progn
 109             (let ((total (+ sum mes)))
 110               (setq sum (max window-min-height (/ (* whi sum) total)))
 111               (setq mes (max window-min-height (/ (* whi mes) total))))
 112             (if (< whi (+ sum mes))
 113                 (enlarge-window (- (+ sum mes) whi)))))
 114       (split-window (get-buffer-window (current-buffer)) sum)
 115       (other-window 1))
 116     (switch-to-buffer buffer)))
 117
 118 ;;
 119 ;; called by wl-summary-mode buffer
 120 ;;
 121 (defvar wl-message-func-called-hook nil)
 122
 123 (defun wl-message-scroll-down (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     (if (bobp)
 128         ()
 129       (scroll-down))
 130     (select-window (get-buffer-window cur-buf))))
 131
 132 (defun wl-message-scroll-up (amount)
 133   (let ((view-message-buffer (get-buffer-create wl-message-buf-name))
 134         (cur-buf (current-buffer)))
 135     (wl-select-buffer view-message-buffer)
 136     (save-excursion
 137       (save-restriction
 138         (widen)
 139         (forward-page 1)
 140         (if (pos-visible-in-window-p (point))
 141             (wl-message-narrow-to-page 1))))            ;Go to next page.
 142     (if (eobp)
 143         ()
 144       (scroll-up))
 145     (select-window (get-buffer-window cur-buf))))
 146
 147 (defun wl-message-follow-current-entity (buffer)
 148   "Follow to current message"
 149   (wl-draft-reply (wl-message-get-original-buffer)
 150                   'to-all wl-message-buffer-cur-summary-buffer)
 151   (let ((mail-reply-buffer buffer))
 152     (wl-draft-yank-from-mail-reply-buffer nil)))
 153
 154 (defun wl-message-original-mode ()
 155   (setq major-mode 'wl-message-original-mode)
 156   (setq mode-name "Original")
 157   (setq buffer-read-only t)
 158   (if (fboundp 'set-buffer-file-coding-system)
 159       (set-buffer-file-coding-system wl-cs-noconv)))
 160
 161 (defun wl-message-mode ()
 162   (interactive)
 163   (setq major-mode 'wl-message-mode)
 164   (setq buffer-read-only t)
 165   (setq mode-name "Message"))
 166
 167 (defun wl-message-get-buffer-create ()
 168   (let ((buf-name wl-message-buf-name))
 169     (or (get-buffer buf-name)
 170         (save-excursion
 171           (set-buffer (get-buffer-create buf-name))
 172           (wl-message-mode)
 173           (run-hooks 'wl-message-buffer-created-hook)
 174           (get-buffer buf-name)))))
 175
 176 (defun wl-message-original-get-buffer-create ()
 177   (or (get-buffer wl-original-buf-name)
 178       (save-excursion
 179         (set-buffer (get-buffer-create wl-original-buf-name))
 180         (wl-message-original-mode)
 181         (get-buffer wl-original-buf-name))))
 182
 183 (defun wl-message-exit ()
 184   (interactive)
 185   (let (summary-buf summary-win)
 186     (if (setq summary-buf wl-message-buffer-cur-summary-buffer)
 187         (if (setq summary-win (get-buffer-window summary-buf))
 188             (select-window summary-win)
 189           (switch-to-buffer summary-buf)
 190           (wl-select-buffer wl-message-buf-name)
 191           (select-window (get-buffer-window summary-buf))))
 192     (run-hooks 'wl-message-exit-hook)))
 193
 194 (defun wl-message-decode (outbuf inbuf flag)
 195   (cond
 196    ((eq flag 'all-header)
 197     (save-excursion
 198       (set-buffer inbuf)
 199       (let ((buffer-read-only nil))
 200         (decode-mime-charset-region (point-min)
 201                                     (save-excursion
 202                                       (goto-char (point-min))
 203                                       (re-search-forward "^$" nil t)
 204                                       (point))
 205                                     wl-mime-charset)))
 206     (wl-message-decode-with-all-header outbuf inbuf))
 207    ((eq flag 'no-mime)
 208     (save-excursion
 209       (set-buffer inbuf)
 210       (let ((buffer-read-only nil))
 211         (save-excursion
 212           (set-buffer outbuf)
 213           (elmo-set-buffer-multibyte nil))
 214         (copy-to-buffer outbuf (point-min) (point-max))
 215         (set-buffer outbuf)
 216         (local-set-key "q" 'wl-message-exit)
 217         (local-set-key "p" 'wl-message-exit)
 218         (local-set-key "n" 'wl-message-exit)
 219         (elmo-set-buffer-multibyte default-enable-multibyte-characters)
 220         ;;(decode-mime-charset-region (point-min) (point-max) wl-mime-charset)
 221         ;; we can call decode-coding-region() directly, because multibyte flag is t.
 222         (decode-coding-region (point-min) (point-max) wl-cs-autoconv)
 223         (wl-highlight-message (point-min)
 224                               (save-excursion
 225                                 (goto-char (point-min))
 226                                 (re-search-forward "^$" nil t)) nil))))
 227    (t                                   ; normal
 228     (save-excursion
 229       (set-buffer inbuf)
 230       (let ((buffer-read-only nil))
 231         (decode-mime-charset-region (point-min)
 232                                     (save-excursion
 233                                       (goto-char (point-min))
 234                                       (re-search-forward "^$" nil t)
 235                                       (point))
 236                                     wl-mime-charset)))
 237     (wl-message-decode-mode outbuf inbuf))))
 238
 239 (defun wl-message-prev-page (&optional lines)
 240   "Scroll down this message. Returns non-nil if top of message"
 241   (interactive)
 242   (let ((cur-buf (current-buffer))
 243         (view-message-buffer (get-buffer-create wl-message-buf-name))
 244         ret-val)
 245     (wl-select-buffer view-message-buffer)
 246     (move-to-window-line 0)
 247     (if (and wl-break-pages
 248              (bobp)
 249              (not (save-restriction (widen) (bobp))))
 250         (progn
 251           (wl-message-narrow-to-page -1)
 252           (goto-char (point-max))
 253           (recenter -1))
 254       (if (not (bobp))
 255           (scroll-down lines)
 256         (setq ret-val t)))
 257     (select-window (get-buffer-window cur-buf))
 258     ret-val))
 259
 260 (static-if (fboundp 'luna-make-entity)
 261     (defsubst wl-message-make-mime-entity (backend number backend folder msgdb)
 262       (luna-make-entity (mm-expand-class-name 'elmo)
 263                         :location (get-buffer-create
 264                                    (concat mmelmo-entity-buffer-name "0"))
 265                         :imap (eq backend 'elmo-imap4)
 266                         :folder folder
 267                         :number number
 268                         :msgdb msgdb :size 0))
 269   (defsubst wl-message-make-mime-entity (backend number backend folder msgdb)
 270     (mime-open-entity backend (list folder number msgdb nil))))
 271
 272 (defun wl-message-next-page (&optional lines)
 273   "Scroll up this message. Returns non-nil if bottom of message"
 274   (interactive)
 275   (let ((cur-buf (current-buffer))
 276         (view-message-buffer (get-buffer-create wl-message-buf-name))
 277         ret-val)
 278     (wl-select-buffer view-message-buffer)
 279     (move-to-window-line -1)
 280     (if (save-excursion
 281           (end-of-line)
 282           (and (pos-visible-in-window-p)
 283                (eobp)))
 284         (if (or (null wl-break-pages)
 285                 (save-excursion
 286                   (save-restriction
 287                     (widen) (forward-line) (eobp))))
 288             (setq ret-val t)
 289           (wl-message-narrow-to-page 1)
 290           (setq ret-val nil))
 291       (condition-case ()
 292           (scroll-up lines)
 293         (end-of-buffer
 294          (goto-char (point-max))))
 295       (setq ret-val nil))
 296     (select-window (get-buffer-window cur-buf))
 297     ret-val
 298     ))
 299
 300 (defun wl-message-narrow-to-page (&optional arg)
 301   (interactive "P")
 302   (setq arg (if arg (prefix-numeric-value arg) 0))
 303   (save-excursion
 304     (condition-case ()
 305         (forward-page -1)               ; Beginning of current page.
 306       (beginning-of-buffer
 307        (goto-char (point-min))))
 308     (forward-char 1)  ; for compatibility with emacs-19.28 and emacs-19.29
 309     (widen)
 310     (cond
 311      ((> arg 0) (forward-page arg))
 312      ((< arg 0) (forward-page (1- arg))))
 313     (forward-page)
 314     (if wl-break-pages
 315         (narrow-to-region (point)
 316                           (progn
 317                             (forward-page -1)
 318                             (if (and (eolp) (not (bobp)))
 319                                 (forward-line))
 320                             (point)))) ))
 321
 322 (defun wl-message-toggle-disp-summary ()
 323   (interactive)
 324   (let ((summary-buf (get-buffer wl-message-buffer-cur-summary-buffer))
 325         summary-win)
 326     (if (and summary-buf
 327              (buffer-live-p summary-buf))
 328         (if (setq summary-win (get-buffer-window summary-buf))
 329             (delete-window summary-win)
 330           (switch-to-buffer summary-buf)
 331           (wl-select-buffer wl-message-buf-name))
 332       (wl-summary-goto-folder-subr wl-message-buffer-cur-folder 'no-sync
 333                                    nil nil t)
 334                                         ; no summary-buf
 335       (let ((sum-buf (current-buffer)))
 336         (wl-select-buffer wl-message-buf-name)
 337         (setq wl-message-buffer-cur-summary-buffer sum-buf)))))
 338
 339 (defun wl-message-normal-get-original-buffer ()
 340   (let (ret-val)
 341     (if (setq ret-val (get-buffer wl-original-buf-name))
 342         ret-val
 343       (set-buffer (setq ret-val
 344                         (get-buffer-create wl-original-buf-name)))
 345       (wl-message-original-mode)
 346       ret-val)))
 347
 348
 349 (if wl-use-semi
 350     (defalias 'wl-message-get-original-buffer
 351       'mmelmo-get-original-buffer)
 352   (defalias 'wl-message-get-original-buffer
 353     'wl-message-normal-get-original-buffer))
 354
 355 (defvar wl-message-redisplay-func 'wl-normal-message-redisplay)
 356 (defvar wl-message-cache-used nil) ;whether cache is used or not.
 357
 358 (defun wl-message-redisplay (folder number flag msgdb &optional force-reload)
 359   (let ((default-mime-charset wl-mime-charset)
 360         (buffer-read-only nil))
 361     (setq wl-message-cache-used nil)
 362     (if wl-message-redisplay-func
 363         (funcall wl-message-redisplay-func
 364                  folder number flag msgdb force-reload))))
 365
 366 ;; nil means don't fetch all.
 367 (defun wl-message-decide-backend (folder number message-id size)
 368   (let ((dont-do-that (and
 369                        (not (setq wl-message-cache-used
 370                                   (or
 371                                    (elmo-buffer-cache-hit
 372                                     (list folder number message-id))
 373                                    (elmo-cache-exists-p message-id
 374                                                         folder number))))
 375                        (integerp size)
 376                        (not (elmo-local-file-p folder number))
 377                        wl-fetch-confirm-threshold
 378                        (>= size wl-fetch-confirm-threshold)
 379                        (not (y-or-n-p
 380                              (format "Fetch entire message? (%dbytes)"
 381                                      size))))))
 382     (message "")
 383     (cond ((and dont-do-that
 384                 (eq (elmo-folder-number-get-type folder number) 'imap4)
 385                 (not (and (elmo-use-cache-p folder number)
 386                           (elmo-cache-exists-p message-id folder number))))
 387            'elmo-imap4)
 388           (t (if (not dont-do-that) 'elmo)))))
 389
 390 (defmacro wl-message-original-buffer-folder ()
 391   wl-original-buffer-cur-folder)
 392
 393 (defmacro wl-message-original-buffer-number ()
 394   wl-original-buffer-cur-number)
 395
 396 (defun wl-message-set-original-buffer-information (folder number)
 397   (when (or (not (string= folder (or wl-original-buffer-cur-folder "")))
 398             (not (eq number (or wl-original-buffer-cur-number 0))))
 399     (setq wl-original-buffer-cur-folder folder)
 400     (setq wl-original-buffer-cur-number number)))
 401
 402 ;; Works on FLIM-1.9.0/SEMI-1.8.2 or later (maybe).
 403 (defun wl-mmelmo-message-redisplay (folder number flag msgdb
 404                                            &optional force-reload)
 405   (let* ((cur-buf (current-buffer))
 406          (view-message-buffer (wl-message-get-buffer-create))
 407          (message-id (cdr (assq number
 408                                 (elmo-msgdb-get-number-alist msgdb))))
 409          (size (elmo-msgdb-overview-entity-get-size
 410                 (assoc message-id
 411                        (elmo-msgdb-get-overview 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                     (mime-view-ignored-field-list
 427                      (if (eq flag 'all-header)
 428                          nil
 429                        mime-view-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                 (wl-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                 (assoc message-id
 501                        (elmo-msgdb-get-overview msgdb))))
 502          header-end ret-val summary-win
 503          )
 504     (wl-select-buffer view-message-buffer)
 505     (unwind-protect
 506         (progn
 507           (setq wl-message-buffer-cur-summary-buffer cur-buf)
 508           (setq wl-message-buffer-cur-folder folder)
 509           (setq wl-message-buffer-cur-number number)
 510           (setq buffer-read-only nil)
 511           (erase-buffer)
 512           (if (or (eq (elmo-folder-number-get-type folder number) 'localdir)
 513                   (not (and (integerp size)
 514                             wl-fetch-confirm-threshold
 515                             (>= size wl-fetch-confirm-threshold)
 516                             (not (elmo-cache-exists-p message-id
 517                                                       folder number))
 518                             (not (y-or-n-p
 519                                   (format "Fetch entire message? (%dbytes)"
 520                                           size))))))
 521               (progn
 522                 (save-excursion
 523                   (set-buffer original-message-buffer)
 524                   (let ((buffer-read-only nil))
 525                     (elmo-read-msg-with-buffer-cache
 526                      folder number original-message-buffer msgdb force-reload)))
 527                 ;; decode MIME message.
 528                 (wl-message-decode
 529                  view-message-buffer
 530                  original-message-buffer flag)
 531                 (setq ret-val t))
 532             (save-excursion
 533               (set-buffer view-message-buffer)
 534               (insert "\n\n"))))
 535       (setq buffer-read-only nil)
 536       (wl-message-set-original-buffer-information folder number)
 537       (wl-message-overload-functions)
 538       ;; highlight body
 539       (and wl-highlight-body-too (wl-highlight-body))
 540       (condition-case ()
 541           (wl-message-narrow-to-page)
 542         (error nil)) ; ignore errors.
 543       (setq mode-line-buffer-identification
 544             (format "Wanderlust: << %s / %s >>"
 545                     (if (memq 'modeline wl-use-folder-petname)
 546                         (wl-folder-get-petname folder)
 547                       folder)
 548                     number))
 549       (goto-char (point-min))
 550       (unwind-protect
 551           (run-hooks 'wl-message-redisplay-hook)
 552         ;; go back to summary mode
 553         (set-buffer-modified-p nil)
 554         (setq buffer-read-only t)
 555         (set-buffer cur-buf)
 556         (setq summary-win (get-buffer-window cur-buf))
 557         (if (window-live-p summary-win)
 558             (select-window summary-win)))
 559       ret-val
 560       )))
 561
 562 (defun wl-message-refer-article-or-url (e)
 563   "Read article specified by message-id around point. If failed,
 564    attempt to execute button-dispatcher."
 565   (interactive "e")
 566   (let ((window (get-buffer-window (current-buffer)))
 567         mouse-window point beg end msg-id)
 568     (unwind-protect
 569         (progn
 570           (mouse-set-point e)
 571           (setq mouse-window (get-buffer-window (current-buffer)))
 572           (setq point (point))
 573           (setq beg (save-excursion (beginning-of-line) (point)))
 574           (setq end (save-excursion (end-of-line) (point)))
 575           (search-forward ">" end t)      ;Move point to end of "<....>".
 576           (if (and (re-search-backward "\\(<[^<> \t\n]+@[^<> \t\n]+>\\)"
 577                                        beg t)
 578                    (not (string-match "mailto:"
 579                                       (setq msg-id (wl-match-buffer 1)))))
 580               (progn
 581                 (goto-char point)
 582                 (switch-to-buffer-other-window
 583                  wl-message-buffer-cur-summary-buffer)
 584                 (if (wl-summary-jump-to-msg-by-message-id msg-id)
 585                     (wl-summary-redisplay)))
 586             (wl-message-button-dispatcher e)))
 587       (if (eq mouse-window (get-buffer-window (current-buffer)))
 588           (select-window window)))))
 589
 590 (defun wl-message-uu-substring (buf outbuf &optional first last)
 591   (save-excursion
 592     (set-buffer buf)
 593     (search-forward "\n\n")
 594     (let ((sp (point))
 595           ep filename case-fold-search)
 596       (if first
 597           (progn
 598             (re-search-forward "^begin[ \t]+[0-9]+[ \t]+\\([^ ].*\\)" nil t)
 599             (setq filename (buffer-substring (match-beginning 1)(match-end 1))))
 600         (re-search-forward "^M.*$" nil t)) ; uuencoded string
 601       (beginning-of-line)
 602       (setq sp (point))
 603       (goto-char (point-max))
 604       (if last
 605           (re-search-backward "^end" sp t)
 606         (re-search-backward "^M.*$" sp t)) ; uuencoded string
 607       (forward-line 1)
 608       (setq ep (point))
 609       (set-buffer outbuf)
 610       (goto-char (point-max))
 611       (insert-buffer-substring buf sp ep)
 612       (set-buffer buf)
 613       filename)))
 614
 615 ;;; wl-message.el ends here