* wl-message.el (wl-message-buffer-prefetch-clear-timer): New function.
[elisp/wanderlust.git] / wl / wl-summary.el
index 02fcdfa..07f53fb 100644 (file)
@@ -1,4 +1,4 @@
-;;; wl-summary.el -- Summary mode for Wanderlust.
+;;; wl-summary.el --- Summary mode for Wanderlust.
 
 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
 ;; Copyright (C) 1998,1999,2000 Masahiro MURATA <muse@ba2.so-net.ne.jp>
     (if (eq major-mode 'wl-summary-mode)
        (setq wl-summary-buffer-new-count new
              wl-summary-buffer-unread-count unread))
-    (+ new unread)))
+    (cons new unread)))
+
+(defun wl-summary-message-string (&optional use-cache)
+  "Return full body string of current message.
+If optional USE-CACHE is non-nil, use cache if exists."
+  (let ((number (wl-summary-message-number))
+       (folder wl-summary-buffer-elmo-folder))
+    (if (null number)
+       (message "No message.")
+      (elmo-set-work-buf
+       (elmo-message-fetch folder
+                          number
+                          (elmo-make-fetch-strategy
+                           'entire
+                           use-cache ; use cache
+                           nil ; save cache (should `t'?)
+                           (and
+                            use-cache
+                            (elmo-file-cache-get-path
+                             (elmo-message-field folder number 'message-id))))
+                          nil
+                          (current-buffer)
+                          'unread)
+       (buffer-string)))))
 
 (defun wl-summary-reedit (&optional arg)
   "Re-edit current message.
@@ -578,13 +601,7 @@ If ARG is non-nil, Supersedes message"
                  (mail-position-on-field "Newsgroups")
                (mail-position-on-field "To"))
              (delete-other-windows)))
-      (save-excursion
-       (let ((mmelmo-force-fetch-entire-message t))
-         (if (null (wl-summary-message-number))
-             (message "No message.")
-           (set-buffer (wl-summary-get-original-buffer))
-           (wl-draft-edit-string (buffer-substring (point-min)
-                                                   (point-max)))))))))
+      (wl-draft-edit-string (wl-summary-message-string)))))
 
 (defun wl-summary-resend-bounced-mail ()
   "Re-mail the current message.
@@ -593,37 +610,36 @@ contains some mail you have written but has been bounced back to
 you."
   (interactive)
   (save-excursion
-    (let ((mmelmo-force-fetch-entire-message t))
-      (wl-summary-set-message-buffer-or-redisplay)
-      (set-buffer (wl-message-get-original-buffer))
-      (goto-char (point-min))
-      (let ((case-fold-search nil))
-       (cond
-        ((and
-          (re-search-forward
-           (concat "^\\($\\|[Cc]ontent-[Tt]ype:[ \t]+multipart/\\(report\\|mixed\\)\\)") nil t)
-          (not (bolp))
-          (re-search-forward "boundary=\"\\([^\"]+\\)\"" nil t))
-         (let ((boundary (buffer-substring (match-beginning 1) (match-end 1)))
-               start)
-           (cond
-            ((and (setq start (re-search-forward
-                          (concat "^--" boundary "\n"
-                                  "\\([Cc]ontent-[Dd]escription:.*\n\\)?"
-                                  "[Cc]ontent-[Tt]ype:[ \t]+"
-                                  "\\(message/rfc822\\|text/rfc822-headers\\)\n"
-                                  "\\(.+\n\\)*\n") nil t))
-                  (re-search-forward
-                        (concat "\n\\(--" boundary "\\)--\n") nil t))
-             (wl-draft-edit-string (buffer-substring start (match-beginning 1))))
-            (t
-             (message "Seems no message/rfc822 part.")))))
-        ((let ((case-fold-search t))
-           (re-search-forward wl-rejected-letter-start nil t))
-         (skip-chars-forward " \t\n")
-         (wl-draft-edit-string (buffer-substring (point) (point-max))))
-        (t
-         (message "Does not appear to be a rejected letter.")))))))
+    (wl-summary-set-message-buffer-or-redisplay)
+    (set-buffer (wl-message-get-original-buffer))
+    (goto-char (point-min))
+    (let ((case-fold-search nil))
+      (cond
+       ((and
+        (re-search-forward
+         (concat "^\\($\\|[Cc]ontent-[Tt]ype:[ \t]+multipart/\\(report\\|mixed\\)\\)") nil t)
+        (not (bolp))
+        (re-search-forward "boundary=\"\\([^\"]+\\)\"" nil t))
+       (let ((boundary (buffer-substring (match-beginning 1) (match-end 1)))
+             start)
+         (cond
+          ((and (setq start (re-search-forward
+                             (concat "^--" boundary "\n"
+                                     "\\([Cc]ontent-[Dd]escription:.*\n\\)?"
+                                     "[Cc]ontent-[Tt]ype:[ \t]+"
+                                     "\\(message/rfc822\\|text/rfc822-headers\\)\n"
+                                     "\\(.+\n\\)*\n") nil t))
+                (re-search-forward
+                 (concat "\n\\(--" boundary "\\)--\n") nil t))
+           (wl-draft-edit-string (buffer-substring start (match-beginning 1))))
+          (t
+           (message "Seems no message/rfc822 part.")))))
+       ((let ((case-fold-search t))
+         (re-search-forward wl-rejected-letter-start nil t))
+       (skip-chars-forward " \t\n")
+       (wl-draft-edit-string (buffer-substring (point) (point-max))))
+       (t
+       (message "Does not appear to be a rejected letter."))))))
 
 (defun wl-summary-resend-message (address)
   "Resend the current message to ADDRESS."
@@ -757,7 +773,7 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
   (easy-menu-add wl-summary-mode-menu)
   (when wl-summary-lazy-highlight
     (make-local-variable 'window-scroll-functions)
-    (add-hook 'window-scroll-functions 'wl-highlight-summary-window))  
+    (add-hook 'window-scroll-functions 'wl-highlight-summary-window))
   ;; This hook may contain the function `wl-setup-summary' for reasons
   ;; of system internal to accord facilities for the Emacs variants.
   (run-hooks 'wl-summary-mode-hook))
@@ -980,7 +996,7 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
 
 ;; a subroutine for wl-summary-exit/wl-save-status
 ;; Note that folder is not commited here.
-(defun wl-summary-save-view (&optional sticky)
+(defun wl-summary-save-view ()
   ;; already in summary buffer.
   (when wl-summary-buffer-persistent
     ;; save the current summary buffer view.
@@ -1010,12 +1026,11 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
       (unwind-protect
          ;; save summary status
          (progn
-           (if (or force-exit
-                   (not sticky))
+           (wl-summary-save-view)
+           (if (or force-exit (not sticky))
                (elmo-folder-close wl-summary-buffer-elmo-folder)
              (elmo-folder-commit wl-summary-buffer-elmo-folder)
              (elmo-folder-check wl-summary-buffer-elmo-folder))
-           (wl-summary-save-view sticky)
            (if wl-use-scoring (wl-score-save)))
        ;; for sticky summary
        (wl-delete-all-overlays)
@@ -1101,6 +1116,10 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
                 wl-use-scoring)
             (wl-summary-rescan)
             (and msg (wl-summary-jump-to-msg msg))))
+         ((string= range "cache-status")
+          (let ((msg (wl-summary-message-number)))
+            (wl-summary-resume-cache-status)
+            (and msg (wl-summary-jump-to-msg msg))))
          ((or (string-match "last:" range)
               (string-match "first:" range))
           (wl-summary-goto-folder-subr
@@ -1146,8 +1165,8 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
   ;; returns nil if there's no change.
   (if (elmo-get-hash-val (downcase the-email) wl-address-petname-hash)
       (let (char)
-       (message (format "'%s' already exists. (e)dit/(d)elete/(c)ancel?"
-                        the-email))
+       (message "'%s' already exists. (e)dit/(d)elete/(c)ancel?"
+                the-email)
        (while (not (or (eq (setq char (read-char)) ?\r)
                        (eq char ?\n)
                        (eq char ? )
@@ -1253,68 +1272,69 @@ If ARG is non-nil, checking is omitted."
           (size (elmo-msgdb-overview-entity-get-size ov))
           (inhibit-read-only t)
           (buffer-read-only nil)
+          (file-cached (elmo-file-cache-exists-p message-id))
           (force-read (and size
                            (or (null wl-prefetch-threshold)
                                (< size wl-prefetch-threshold))))
           mark new-mark)
-      (if (or arg
-             (null (elmo-file-cache-exists-p message-id)))
-         (unwind-protect
-             (progn
-               (when (and size (not force-read) wl-prefetch-confirm)
-                 (setq force-read
-                       (save-restriction
-                         (widen)
-                         (y-or-n-p
-                          (format
-                           "Message from %s has %d bytes.  Prefetch it? "
-                           (concat
-                            "[ "
-                            (save-match-data
-                              (wl-set-string-width
-                               wl-from-width
-                               (wl-summary-from-func-internal
-                                (eword-decode-string
-                                 (elmo-delete-char
-                                  ?\"
-                                  (or
-                                   (elmo-msgdb-overview-entity-get-from ov)
-                                   "??")))))) " ]")
-                           size))))
-                 (message ""))         ; flush.
-               (setq mark (cadr (assq number mark-alist)))
-               (if force-read
-                   (save-excursion
-                     (save-match-data
-                       ;; online
+      (unwind-protect
+         (progn
+           (when (and (or arg (not file-cached))
+                      size (not force-read) wl-prefetch-confirm)
+             (setq force-read
+                   (save-restriction
+                     (widen)
+                     (y-or-n-p
+                      (format
+                       "Message from %s has %d bytes.  Prefetch it? "
+                       (concat
+                        "[ "
+                        (save-match-data
+                          (wl-set-string-width
+                           wl-summary-from-width
+                           (wl-summary-from-func-internal
+                            (eword-decode-string
+                             (elmo-delete-char
+                              ?\"
+                              (or
+                               (elmo-msgdb-overview-entity-get-from ov)
+                               "??")))))) " ]")
+                       size))))
+             (message ""))             ; flush.
+           (setq mark (cadr (assq number mark-alist)))
+           (if force-read
+               (save-excursion
+                 (save-match-data
+                   ;; online
+                   (if (or arg (not file-cached))
                        (elmo-message-encache
                         wl-summary-buffer-elmo-folder
-                        number)
-                       (setq new-mark
-                             (cond
-                              ((string= mark
-                                        wl-summary-unread-uncached-mark)
-                               wl-summary-unread-cached-mark)
-                              ((string= mark wl-summary-new-mark)
-                               (setq wl-summary-buffer-new-count
-                                     (- wl-summary-buffer-new-count 1))
-                               (setq wl-summary-buffer-unread-count
-                                     (+ wl-summary-buffer-unread-count 1))
-                               wl-summary-unread-cached-mark)
-                              ((string= mark wl-summary-read-uncached-mark)
-                               nil)
-                              (t mark)))
-                       (setq mark-alist (elmo-msgdb-mark-set
-                                         mark-alist number new-mark))
-                       (or new-mark (setq new-mark " "))
-                       (elmo-msgdb-set-mark-alist msgdb mark-alist)
-                       (wl-summary-set-mark-modified)
-                       (wl-summary-update-modeline)
-                       (wl-folder-update-unread
-                        (wl-summary-buffer-folder-name)
-                        (+ wl-summary-buffer-unread-count
-                           wl-summary-buffer-new-count)))
-                     new-mark))))))))
+                        number))
+                   (setq new-mark
+                         (cond
+                          ((string= mark
+                                    wl-summary-unread-uncached-mark)
+                           wl-summary-unread-cached-mark)
+                          ((string= mark wl-summary-new-mark)
+                           (setq wl-summary-buffer-new-count
+                                 (- wl-summary-buffer-new-count 1))
+                           (setq wl-summary-buffer-unread-count
+                                 (+ wl-summary-buffer-unread-count 1))
+                           wl-summary-unread-cached-mark)
+                          ((string= mark wl-summary-read-uncached-mark)
+                           nil)
+                          (t mark)))
+                   (setq mark-alist (elmo-msgdb-mark-set
+                                     mark-alist number new-mark))
+                   (or new-mark (setq new-mark " "))
+                   (elmo-msgdb-set-mark-alist msgdb mark-alist)
+                   (wl-summary-set-mark-modified)
+                   (wl-summary-update-modeline)
+                   (wl-folder-update-unread
+                    (wl-summary-buffer-folder-name)
+                    (+ wl-summary-buffer-unread-count
+                       wl-summary-buffer-new-count)))
+                 new-mark)))))))
 
 ;;(defvar wl-summary-message-uncached-marks
 ;;  (list wl-summary-new-mark
@@ -1660,7 +1680,7 @@ If ARG is non-nil, checking is omitted."
            (delete-region (match-beginning 2) (match-end 2))
            (goto-char (match-beginning 2))
            (insert new-mark)
-           (elmo-file-cache-delete 
+           (elmo-file-cache-delete
             (elmo-file-cache-get-path
              (elmo-message-field wl-summary-buffer-elmo-folder
                                  number
@@ -1697,7 +1717,7 @@ If ARG is non-nil, checking is omitted."
        (if (elmo-file-cache-exists-p msgid)
            (if (or
                 (string= mark wl-summary-unread-uncached-mark) ; U -> !
-                (string= mark wl-summary-new-mark)             ; N -> !
+                (string= mark wl-summary-new-mark)             ; N -> !
                 )
                (setq set-mark wl-summary-unread-cached-mark)
              (if (string= mark wl-summary-read-uncached-mark)  ; u -> ' '
@@ -1764,7 +1784,7 @@ If ARG is non-nil, checking is omitted."
       (while mark-alist
        (setq entity (car mark-alist))
        (if (setq msg-num (car (rassoc (car entity) number-alist)))
-           (progn 
+           (progn
 ;;;          (goto-char (point-min))
              (if (re-search-forward (format "^ *%s \\( \\)" msg-num) nil t)
                  (progn
@@ -1951,7 +1971,7 @@ If ARG is non-nil, checking is omitted."
                               wl-summary-unread-uncached-mark
                               wl-summary-new-mark)
            mark-alist (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb))
-            num-ma (length mark-alist)
+           num-ma (length mark-alist)
            importants (elmo-folder-list-importants
                        wl-summary-buffer-elmo-folder
                        wl-summary-important-mark)
@@ -2001,26 +2021,6 @@ If ARG is non-nil, checking is omitted."
        (setq diffs (cdr diffs)))
       (if (interactive-p) (message mes)))))
 
-(defun wl-summary-confirm-appends (appends)
-  (let ((len (length appends))
-       in)
-    (if (> len wl-summary-update-confirm-threshold)
-       (if (y-or-n-p (format "Too many messages(%d).  Continue? " len))
-           appends
-         (setq in wl-summary-update-confirm-threshold)
-         (catch 'end
-           (while t
-             (setq in (read-from-minibuffer "Update number: "
-                                            (int-to-string in))
-                   in (string-to-int in))
-             (if (< len in)
-                 (throw 'end len))
-             (if (y-or-n-p (format "%d messages are disappeared.  OK? "
-                                   (max (- len in) 0)))
-                 (throw 'end in))))
-         (nthcdr (max (- len in) 0) appends))
-      appends)))
-
 (defun wl-summary-sync-update (&optional unset-cursor sync-all no-check)
   "Update the summary view to the newest folder status."
   (interactive)
@@ -2029,38 +2029,39 @@ If ARG is non-nil, checking is omitted."
         (elmo-mime-charset wl-summary-buffer-mime-charset)
         (inhibit-read-only t)
         (buffer-read-only nil)
-        (elmo-folder-update-threshold wl-summary-update-confirm-threshold)
         gc-message
-        overview number-alist mark-alist 
+        overview number-alist mark-alist
         curp num i new-msgdb
         append-list delete-list crossed
         update-thread update-top-list
         expunged mes sync-result)
-    (unless wl-summary-buffer-elmo-folder
-      (error "(Internal error) Folder is not set:%s" (buffer-name
-                                                     (current-buffer))))
-    (fset 'wl-summary-append-message-func-internal
-         (wl-summary-get-append-message-func))
-    ;; Flush pending append operations (disconnected operation).
-    ;;(setq seen-list
-    ;;(wl-summary-flush-pending-append-operations seen-list))
-    (goto-char (point-max))
-    (wl-folder-confirm-existence folder 'force)
-    (setq sync-result (elmo-folder-synchronize
-                      folder
-                      wl-summary-new-mark
-                      wl-summary-unread-uncached-mark
-                      wl-summary-unread-cached-mark
-                      wl-summary-read-uncached-mark
-                      wl-summary-important-mark
-                      sync-all no-check))
-    (setq new-msgdb (nth 0 sync-result))
-    (setq delete-list (nth 1 sync-result))
-    (setq crossed (nth 2 sync-result))
-    (if sync-result
+    (unwind-protect
        (progn
-         ;; Setup sync-all
-         (if sync-all (wl-summary-sync-all-init))
+         (unless wl-summary-buffer-elmo-folder
+           (error "(Internal error) Folder is not set:%s" (buffer-name
+                                                           (current-buffer))))
+         (fset 'wl-summary-append-message-func-internal
+               (wl-summary-get-append-message-func))
+         ;; Flush pending append operations (disconnected operation).
+         ;;(setq seen-list
+         ;;(wl-summary-flush-pending-append-operations seen-list))
+         (goto-char (point-max))
+         (wl-folder-confirm-existence folder 'force)
+         (setq sync-result (elmo-folder-synchronize
+                            folder
+                            wl-summary-new-mark
+                            wl-summary-unread-uncached-mark
+                            wl-summary-unread-cached-mark
+                            wl-summary-read-uncached-mark
+                            wl-summary-important-mark
+                            sync-all no-check))
+         (setq new-msgdb (nth 0 sync-result))
+         (setq delete-list (nth 1 sync-result))
+         (setq crossed (nth 2 sync-result))
+         (if sync-result
+             (progn
+               ;; Setup sync-all
+               (if sync-all (wl-summary-sync-all-init))
 ;    (if (and has-nntp
 ;           (elmo-nntp-max-number-precedes-list-active-p))
        ;; XXX this does not work correctly in rare case.
@@ -2068,137 +2069,138 @@ If ARG is non-nil, checking is omitted."
 ;            (wl-summary-delete-canceled-msgs-from-list
 ;             delete-list
 ;             (wl-summary-buffer-msgdb))))
-         (when delete-list
-           (wl-summary-delete-messages-on-buffer delete-list "Deleting...")
-           (message "Deleting...done"))
-         (when new-msgdb
-           (wl-summary-set-status-marks-on-buffer
-            wl-summary-new-mark
-            wl-summary-unread-uncached-mark))
-         (setq append-list (elmo-msgdb-get-overview new-msgdb))
-         (setq curp append-list)
-         (setq num (length curp))
-         (when append-list
-           (setq i 0)
-           ;; set these value for append-message-func
-           (setq overview (elmo-msgdb-get-overview
-                           (elmo-folder-msgdb folder)))
-           (setq number-alist (elmo-msgdb-get-number-alist
-                               (elmo-folder-msgdb folder)))
-           (setq mark-alist (elmo-msgdb-get-mark-alist
-                             (elmo-folder-msgdb folder)))
-           (setq wl-summary-delayed-update nil)
-           (elmo-kill-buffer wl-summary-search-buf-name)
-           (while curp
-             (setq entity (car curp))
-             (when (setq update-thread
-                         (wl-summary-append-message-func-internal
-                          entity overview mark-alist
-                          (not sync-all)))
-               (wl-append update-top-list update-thread))
-             (if elmo-use-database
-                 (elmo-database-msgid-put
-                  (car entity) (elmo-folder-name-internal folder)
-                  (elmo-msgdb-overview-entity-get-number entity)))
-             (setq curp (cdr curp))
-             (when (> num elmo-display-progress-threshold)
-               (setq i (+ i 1))
-               (if (or (zerop (% i 5)) (= i num))
-                   (elmo-display-progress
-                    'wl-summary-sync-update "Updating thread..."
-                    (/ (* i 100) num)))))
-           (when wl-summary-delayed-update
-             (while wl-summary-delayed-update
-               (message "Parent (%d) of message %d is no entity"
-                        (caar wl-summary-delayed-update)
-                        (elmo-msgdb-overview-entity-get-number
-                         (cdar wl-summary-delayed-update)))
-               (when (setq update-thread
-                           (wl-summary-append-message-func-internal
-                            (cdar wl-summary-delayed-update)
-                            overview mark-alist (not sync-all) t))
-                 (wl-append update-top-list update-thread))
-               (setq wl-summary-delayed-update
-                     (cdr wl-summary-delayed-update))))
-           (when (and (eq wl-summary-buffer-view 'thread)
-                      update-top-list)
-             (wl-thread-update-indent-string-thread
-              (elmo-uniq-list update-top-list)))
-           (message "Updating thread...done"))
-         (unless (eq wl-summary-buffer-view 'thread)
-           (wl-summary-make-number-list))
-         (wl-summary-set-message-modified)
-         (wl-summary-set-mark-modified)
-         (when (and sync-all (eq wl-summary-buffer-view 'thread))
-           (elmo-kill-buffer wl-summary-search-buf-name)
-           (message "Inserting thread...")
-           (setq wl-thread-entity-cur 0)
-           (wl-thread-insert-top)
-           (message "Inserting thread...done"))
-         (if elmo-use-database
-             (elmo-database-close))
-         (run-hooks 'wl-summary-sync-updated-hook)
-         (setq mes 
-               (if (and (eq (length delete-list) 0)
-                        (eq num 0))
-                   (format
-                    "No updates for \"%s\"" (elmo-folder-name-internal
-                                             folder))
-                 (format "Updated (-%d/+%d) message(s)"
-                         (length delete-list) num))))
-      (setq mes "Quit updating."))
-    ;; synchronize marks.
-    (if (and wl-summary-auto-sync-marks sync-result)
-       (wl-summary-sync-marks))
-    ;; scoring
-    (when wl-use-scoring
-      (setq wl-summary-scored nil)
-      (wl-summary-score-headers nil (wl-summary-buffer-msgdb)
-                               (and sync-all
-                                    (wl-summary-rescore-msgs number-alist))
-                               sync-all)
-      (when (and wl-summary-scored
-                (setq expunged (wl-summary-score-update-all-lines)))
-       (setq mes (concat mes
-                         (format " (%d expunged)"
-                                 (length expunged))))))
-    (if (and crossed (> crossed 0))
-       (setq mes
-             (if mes
-                 (concat mes
-                         (format " (%d crosspost)" crossed))
-               (format "%d crosspost message(s)" crossed)))
-      (and mes (setq mes (concat mes "."))))
-    ;; Update Folder mode
-    (wl-folder-set-folder-updated
-     (elmo-folder-name-internal folder)
-     (list 0
-          (wl-summary-count-unread
-           (elmo-msgdb-get-mark-alist
-            (elmo-folder-msgdb folder)))
-          (elmo-folder-messages folder)))
-    (wl-summary-update-modeline)
-    (wl-summary-buffer-number-column-detect t)
-    ;;
-    (unless unset-cursor
-      (goto-char (point-min))
-      (if (not (wl-summary-cursor-down t))
-         (progn
-           (goto-char (point-max))
-           (forward-line -1))
-       (if (and wl-summary-highlight
-                (not (get-text-property (point) 'face)))
-           (save-excursion
-             (forward-line (- 0
-                              (or
-                               wl-summary-partial-highlight-above-lines
-                               wl-summary-highlight-partial-threshold)))
-             (wl-highlight-summary (point) (point-max))))))
-    (setq wl-summary-buffer-msgdb (elmo-folder-msgdb folder))
-    (wl-delete-all-overlays)
-    (set-buffer-modified-p nil)
-    (if mes (message "%s" mes))))
-  
+               (when delete-list
+                 (wl-summary-delete-messages-on-buffer delete-list "Deleting...")
+                 (message "Deleting...done"))
+               (when new-msgdb
+                 (wl-summary-set-status-marks-on-buffer
+                  wl-summary-new-mark
+                  wl-summary-unread-uncached-mark))
+               (setq append-list (elmo-msgdb-get-overview new-msgdb))
+               (setq curp append-list)
+               (setq num (length curp))
+               (when append-list
+                 (setq i 0)
+                 ;; set these value for append-message-func
+                 (setq overview (elmo-msgdb-get-overview
+                                 (elmo-folder-msgdb folder)))
+                 (setq number-alist (elmo-msgdb-get-number-alist
+                                     (elmo-folder-msgdb folder)))
+                 (setq mark-alist (elmo-msgdb-get-mark-alist
+                                   (elmo-folder-msgdb folder)))
+                 (setq wl-summary-delayed-update nil)
+                 (elmo-kill-buffer wl-summary-search-buf-name)
+                 (while curp
+                   (setq entity (car curp))
+                   (when (setq update-thread
+                               (wl-summary-append-message-func-internal
+                                entity overview mark-alist
+                                (not sync-all)))
+                     (wl-append update-top-list update-thread))
+                   (if elmo-use-database
+                       (elmo-database-msgid-put
+                        (car entity) (elmo-folder-name-internal folder)
+                        (elmo-msgdb-overview-entity-get-number entity)))
+                   (setq curp (cdr curp))
+                   (when (> num elmo-display-progress-threshold)
+                     (setq i (+ i 1))
+                     (if (or (zerop (% i 5)) (= i num))
+                         (elmo-display-progress
+                          'wl-summary-sync-update "Updating thread..."
+                          (/ (* i 100) num)))))
+                 (when wl-summary-delayed-update
+                   (while wl-summary-delayed-update
+                     (message "Parent (%d) of message %d is no entity"
+                              (caar wl-summary-delayed-update)
+                              (elmo-msgdb-overview-entity-get-number
+                               (cdar wl-summary-delayed-update)))
+                     (when (setq update-thread
+                                 (wl-summary-append-message-func-internal
+                                  (cdar wl-summary-delayed-update)
+                                  overview mark-alist (not sync-all) t))
+                       (wl-append update-top-list update-thread))
+                     (setq wl-summary-delayed-update
+                           (cdr wl-summary-delayed-update))))
+                 (when (and (eq wl-summary-buffer-view 'thread)
+                            update-top-list)
+                   (wl-thread-update-indent-string-thread
+                    (elmo-uniq-list update-top-list)))
+                 (message "Updating thread...done"))
+               (unless (eq wl-summary-buffer-view 'thread)
+                 (wl-summary-make-number-list))
+               (wl-summary-set-message-modified)
+               (wl-summary-set-mark-modified)
+               (when (and sync-all (eq wl-summary-buffer-view 'thread))
+                 (elmo-kill-buffer wl-summary-search-buf-name)
+                 (message "Inserting thread...")
+                 (setq wl-thread-entity-cur 0)
+                 (wl-thread-insert-top)
+                 (message "Inserting thread...done"))
+               (if elmo-use-database
+                   (elmo-database-close))
+               (run-hooks 'wl-summary-sync-updated-hook)
+               (setq mes
+                     (if (and (eq (length delete-list) 0)
+                              (eq num 0))
+                         (format
+                          "No updates for \"%s\"" (elmo-folder-name-internal
+                                                   folder))
+                       (format "Updated (-%d/+%d) message(s)"
+                               (length delete-list) num))))
+           (setq mes "Quit updating.")))
+      ;; synchronize marks.
+      (if (and wl-summary-auto-sync-marks sync-result)
+         (wl-summary-sync-marks))
+      ;; scoring
+      (when wl-use-scoring
+       (setq wl-summary-scored nil)
+       (wl-summary-score-headers nil (wl-summary-buffer-msgdb)
+                                 (and sync-all
+                                      (wl-summary-rescore-msgs number-alist))
+                                 sync-all)
+       (when (and wl-summary-scored
+                  (setq expunged (wl-summary-score-update-all-lines)))
+         (setq mes (concat mes
+                           (format " (%d expunged)"
+                                   (length expunged))))))
+      (if (and crossed (> crossed 0))
+         (setq mes
+               (if mes
+                   (concat mes
+                           (format " (%d crosspost)" crossed))
+                 (format "%d crosspost message(s)" crossed)))
+       (and mes (setq mes (concat mes "."))))
+      ;; Update Folder mode
+      (wl-folder-set-folder-updated
+       (elmo-folder-name-internal folder)
+       (list 0
+            (let ((pair (wl-summary-count-unread
+                         (elmo-msgdb-get-mark-alist
+                          (elmo-folder-msgdb folder)))))
+              (+ (car pair) (cdr pair)))
+            (elmo-folder-messages folder)))
+      (wl-summary-update-modeline)
+      (wl-summary-buffer-number-column-detect t)
+      ;;
+      (unless unset-cursor
+       (goto-char (point-min))
+       (if (not (wl-summary-cursor-down t))
+           (progn
+             (goto-char (point-max))
+             (forward-line -1))
+         (if (and wl-summary-highlight
+                  (not (get-text-property (point) 'face)))
+             (save-excursion
+               (forward-line (- 0
+                                (or
+                                 wl-summary-partial-highlight-above-lines
+                                 wl-summary-highlight-partial-threshold)))
+               (wl-highlight-summary (point) (point-max))))))
+      (setq wl-summary-buffer-msgdb (elmo-folder-msgdb folder))
+      (wl-delete-all-overlays)
+      (set-buffer-modified-p nil)
+      (if mes (message "%s" mes)))))
+
 (defun wl-summary-set-score-mark (mark)
   (save-excursion
     (beginning-of-line)
@@ -2242,15 +2244,11 @@ If ARG is non-nil, checking is omitted."
                 (string-to-int
                  (read-from-minibuffer "Jump to Message(No.): ")))))
     (setq num (int-to-string num))
-    (if (re-search-forward (concat "^[ \t]*" num "[^0-9]") nil t)
-       (progn
-         (beginning-of-line)
-         t)
-      (if (re-search-backward (concat "^[ \t]*" num "[^0-9]") nil t)
-         (progn
-           (beginning-of-line)
-           t)
-       nil))))
+    (beginning-of-line)
+    (if (or (re-search-forward (concat "^[ \t]*" num "[^0-9]") nil t)
+           (re-search-backward (concat "^[ \t]*" num "[^0-9]") nil t))
+       (progn (beginning-of-line) t)
+      nil)))
 
 (defun wl-summary-highlight-msgs (msgs)
   (save-excursion
@@ -2481,11 +2479,13 @@ If ARG, without confirm."
 
 (defsubst wl-summary-open-folder (folder)
   ;; Select folder
-  (unwind-protect
-      (elmo-folder-open folder 'load-msgdb)
-    ;; For compatibility
-    (setq wl-summary-buffer-msgdb (elmo-folder-msgdb folder))
-    (setq wl-summary-buffer-folder-name (elmo-folder-name-internal folder))))
+  (let ((elmo-mime-charset wl-summary-buffer-mime-charset))
+    (unwind-protect
+       (elmo-folder-open folder 'load-msgdb)
+      ;; For compatibility
+      (setq wl-summary-buffer-msgdb (elmo-folder-msgdb folder))
+      (setq wl-summary-buffer-folder-name (elmo-folder-name-internal
+                                          folder)))))
 
 (defun wl-summary-goto-folder-subr (&optional name scan-type other-window
                                              sticky interactive scoring)
@@ -2501,14 +2501,13 @@ If ARG, without confirm."
        (setq name wl-default-folder))
     (setq folder (wl-folder-get-elmo-folder name))
     (when (and (not (string=
-                    (and cur-fld
-                         (elmo-folder-name-internal cur-fld))
+                    (and cur-fld (elmo-folder-name-internal cur-fld))
                     (elmo-folder-name-internal folder))) ; folder is moved.
               (eq major-mode 'wl-summary-mode)) ; called in summary.
       (setq wl-summary-last-visited-folder (wl-summary-buffer-folder-name))
       (run-hooks 'wl-summary-exit-pre-hook)
       (wl-summary-cleanup-temp-marks (wl-summary-sticky-p))
-      (wl-summary-save-view 'keep) ; keep current buffer, anyway.
+      (wl-summary-save-view)
       (elmo-folder-commit wl-summary-buffer-elmo-folder))
     (setq buf (wl-summary-get-buffer-create (elmo-folder-name-internal folder)
                                            sticky))
@@ -2595,7 +2594,7 @@ If ARG, without confirm."
          (set-buffer-modified-p nil)
          (goto-char (point-min))
          (if (wl-summary-cursor-down t)
-             (let ((unreadp (wl-summary-next-message 
+             (let ((unreadp (wl-summary-next-message
                              (wl-summary-message-number)
                              'down t)))
                (cond ((and wl-auto-select-first
@@ -2603,6 +2602,11 @@ If ARG, without confirm."
                       ;; wl-auto-select-first is non-nil and
                       ;; unreadp is non-nil but not important
                       (setq retval 'disp-msg))
+                     ((and wl-auto-prefetch-first
+                           (wl-summary-auto-select-msg-p unreadp))
+                      ;; wl-auto-select-first is non-nil and
+                      ;; unreadp is non-nil but not important
+                      (setq retval 'prefetch-msg))
                      ((not (wl-summary-auto-select-msg-p unreadp))
                       ;; unreadp is nil or important
                       (setq retval 'more-next))))
@@ -2628,6 +2632,13 @@ If ARG, without confirm."
                (wl-highlight-summary (point-min) (point-max))))
          (if (eq retval 'disp-msg)
              (wl-summary-redisplay))
+         (if (eq retval 'prefetch-msg)
+             (wl-message-buffer-prefetch
+              folder
+              (wl-summary-message-number)
+              wl-message-buffer-prefetch-depth
+              (current-buffer)
+              wl-summary-buffer-mime-charset))
          (if mes (message "%s" mes))
          (if (and interactive wl-summary-recenter)
              (recenter (/ (- (window-height) 2) 2))))))
@@ -2704,7 +2715,7 @@ If ARG, without confirm."
     (error (ding)
           (message "Error in wl-summary-line-inserted-hook"))))
 
-(defun wl-summary-insert-summary (entity database mark-alist dummy &optional dummy)
+(defun wl-summary-insert-summary (entity database mark-alist dummy &optional dumm)
   (let ((overview-entity entity)
        summary-line msg)
     (setq msg (elmo-msgdb-overview-entity-get-number entity))
@@ -2796,7 +2807,7 @@ If ARG, without confirm."
                     ;; Is founded entity myself or children?
                     (not (string=
                           (elmo-msgdb-overview-entity-get-id entity)
-                          (elmo-msgdb-overview-entity-get-id 
+                          (elmo-msgdb-overview-entity-get-id
                            (car found-entity))))
                     (with-current-buffer summary-buf
                       (not (wl-thread-descendant-p
@@ -3005,8 +3016,8 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
   (save-excursion
     (let ((inhibit-read-only t)
          (buffer-read-only nil)
-          (buf (current-buffer))
-          sol eol rs re)
+         (buf (current-buffer))
+         sol eol rs re)
       (beginning-of-line)
       (setq sol (point))
       (end-of-line)
@@ -3095,9 +3106,7 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                                wl-summary-unread-uncached-mark
                                wl-summary-new-mark))
            (refiles (append moves dels))
-           (refile-executed 0)
            (refile-failures 0)
-           (copy-executed 0)
            (copy-failures 0)
            (copy-len (length copies))
            refile-len
@@ -3131,8 +3140,6 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                              (wl-folder-get-elmo-folder
                               (car (car dst-msgs))))
                            (wl-summary-buffer-msgdb)
-                           refile-len
-                           refile-executed
                            (not (null (cdr dst-msgs)))
                            nil ; no-delete
                            nil ; same-number
@@ -3149,7 +3156,6 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                                              wl-summary-buffer-refile-list)))
            (setq refile-failures
                  (+ refile-failures (length (cdr (car dst-msgs))))))
-         (setq refile-executed (+ refile-executed (length (cdr (car dst-msgs)))))
          (setq dst-msgs (cdr dst-msgs)))
        (elmo-progress-clear 'elmo-folder-move-messages)
        ;; end refile
@@ -3167,8 +3173,6 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                            (wl-folder-get-elmo-folder
                             (car (car dst-msgs)))
                            (wl-summary-buffer-msgdb)
-                           copy-len
-                           copy-executed
                            (not (null (cdr dst-msgs)))
                            t ; t is no-delete (copy)
                            nil ; same number
@@ -3185,7 +3189,6 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                                              wl-summary-buffer-copy-list)))
            (setq copy-failures
                  (+ copy-failures (length (cdr (car dst-msgs))))))
-         (setq copy-executed (+ copy-executed (length (cdr (car dst-msgs)))))
          (setq dst-msgs (cdr dst-msgs)))
        ;; Hide progress bar.
        (elmo-progress-clear 'elmo-folder-move-messages)
@@ -3225,7 +3228,7 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
        (setq fld default))
     (setq fld (elmo-string (wl-folder-get-realname fld)))
     (if (string-match "\n" fld)
-       (error "Not supported folder name: %s" fld))    
+       (error "Not supported folder name: %s" fld))
     (unless no-create
       (if ignore-error
          (condition-case nil
@@ -3299,7 +3302,6 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
   (wl-summary-refile-subr 'copy (interactive-p) dst number))
 
 (defun wl-summary-refile-subr (copy-or-refile interactive &optional dst number)
-  (interactive)
   (let* ((buffer-num (wl-summary-message-number))
         (msg-num (or number buffer-num))
         (msgid (and msg-num
@@ -3686,10 +3688,12 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
 
 (defun wl-summary-pick (&optional from-list delete-marks)
   (interactive)
-  (let ((result (elmo-msgdb-search
-                wl-summary-buffer-elmo-folder
-                (elmo-read-search-condition wl-summary-pick-field-default)
-                (wl-summary-buffer-msgdb))))
+  (let* ((condition (car (elmo-parse-search-condition
+                         (elmo-read-search-condition
+                          wl-summary-pick-field-default))))
+        (result (elmo-folder-search wl-summary-buffer-elmo-folder
+                                    condition
+                                    from-list)))
     (if delete-marks
       (let ((mlist wl-summary-buffer-target-mark-list))
        (while mlist
@@ -3697,12 +3701,11 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
            (wl-summary-unmark))
          (setq mlist (cdr mlist)))
        (setq wl-summary-buffer-target-mark-list nil)))
-    (if from-list
-       (setq result (elmo-list-filter from-list result)))
-    (message "%d message(s) are picked." (length result))
-    (if (null result)
-       (message "No message was picked.")
-      (wl-summary-target-mark-msgs result))))
+    (if result
+       (progn
+         (wl-summary-target-mark-msgs result)
+         (message "%d message(s) are picked." (length result)))
+      (message "No message was picked."))))
 
 (defun wl-summary-unvirtual ()
   "Exit from current virtual folder."
@@ -3801,8 +3804,8 @@ If ARG, exit virtual folder."
              (delq (car mlist) wl-summary-buffer-target-mark-list))
        (setq mlist (cdr mlist))))))
 
-(defun wl-summary-target-mark-prefetch ()
-  (interactive)
+(defun wl-summary-target-mark-prefetch (&optional ignore-cache)
+  (interactive "P")
   (save-excursion
     (let* ((mlist (nreverse wl-summary-buffer-target-mark-list))
           (inhibit-read-only t)
@@ -3813,7 +3816,7 @@ If ARG, exit virtual folder."
           skipped
           new-mark)
       (while mlist
-       (setq new-mark (wl-summary-prefetch-msg (car mlist)))
+       (setq new-mark (wl-summary-prefetch-msg (car mlist) ignore-cache))
        (if new-mark
            (progn
              (message "Prefetching... %d/%d message(s)"
@@ -3981,7 +3984,8 @@ If ARG, exit virtual folder."
   (save-excursion
     (goto-char (point-min))
     (let ((wl-save-dir
-          (wl-read-directory-name "Save to directory: " wl-tmp-dir))
+          (wl-read-directory-name "Save to directory: "
+                                  wl-temporary-file-directory))
          (regexp (concat "^" wl-summary-buffer-number-regexp "\\(\\*\\)"))
          number mlist)
       (if (null (file-exists-p wl-save-dir))
@@ -4211,8 +4215,7 @@ If ARG, exit virtual folder."
       (setq linked (wl-thread-entity-get-linked thr-entity)))
     (if (string= thr-str "")
        (setq no-parent t)) ; no parent
-    (if (and wl-summary-width
-            wl-summary-indent-length-limit
+    (if (and wl-summary-indent-length-limit
             (< wl-summary-indent-length-limit
                (string-width thr-str)))
        (setq thr-str (wl-set-string-width
@@ -4221,8 +4224,8 @@ If ARG, exit virtual folder."
     (setq from
          (wl-set-string-width
           (if children-num
-              (- wl-from-width (length children-num) 2)
-            wl-from-width)
+              (- wl-summary-from-width (length children-num) 2)
+            wl-summary-from-width)
           (elmo-delete-char ?\n
                             (wl-summary-from-func-internal
                              (elmo-msgdb-overview-entity-get-from entity)))))
@@ -4264,8 +4267,8 @@ If ARG, exit virtual folder."
                                         subject parent-subject)))
                               (wl-summary-subject-func-internal subject) ""))
                     (if (and (not wl-summary-width)
-                             wl-subject-length-limit)
-                        (truncate-string subject wl-subject-length-limit)
+                             wl-summary-subject-length-limit)
+                        (truncate-string subject wl-summary-subject-length-limit)
                       subject)))))
     (if wl-summary-width (setq line
                               (wl-set-string-width
@@ -4325,7 +4328,7 @@ If ARG, exit virtual folder."
 (defsubst wl-summary-next-message (num direction hereto)
   (if wl-summary-buffer-next-message-function
       (funcall wl-summary-buffer-next-message-function num direction hereto)
-    (let ((cur-spec (cdr (assq wl-summary-move-order 
+    (let ((cur-spec (cdr (assq wl-summary-move-order
                               (if (elmo-folder-plugged-p
                                    wl-summary-buffer-elmo-folder)
                                   wl-summary-move-spec-plugged-alist
@@ -4358,7 +4361,7 @@ If ARG, exit virtual folder."
                           (setq nums (cdr nums))))))
              (setq cur-spec (cdr cur-spec))))
        (car nums)))))
-  
+
 (defsubst wl-summary-cursor-move (direction hereto)
   (when (and (eq direction 'up)
             (eobp))
@@ -4429,6 +4432,7 @@ If ARG, exit virtual folder."
   "returns update or all or rescan."
   ;; for the case when parts are expanded in the bottom of the folder
   (let ((input-range-list '("update" "all" "rescan" "first:" "last:"
+                           "cache-status"
                            "no-sync" "rescan-noscore" "all-visible"))
        (default (or (wl-get-assoc-list-value
                      wl-folder-sync-range-alist
@@ -4501,8 +4505,7 @@ If ARG, exit virtual folder."
            (when mes-win
              (wl-message-select-buffer wl-message-buffer)
              (run-hooks 'wl-summary-toggle-disp-folder-message-resumed-hook)
-             (select-window (get-buffer-window cur-buf)))
-           )
+             (select-window (get-buffer-window cur-buf))))
        ;; hide message window
        (let ((wl-stay-folder-window t)
              (mes-win (and wl-message-buffer
@@ -4526,8 +4529,7 @@ If ARG, exit virtual folder."
          (when mes-win
            (wl-message-select-buffer wl-message-buffer)
            (run-hooks 'wl-summary-toggle-disp-folder-message-resumed-hook)
-           (select-window (get-buffer-window cur-buf))))
-       ))))
+           (select-window (get-buffer-window cur-buf))))))))
   (run-hooks 'wl-summary-toggle-disp-folder-hook))
 
 (defun wl-summary-toggle-disp-msg (&optional arg)
@@ -4554,7 +4556,7 @@ If ARG, exit virtual folder."
          (delete-window)
          (and (get-buffer-window cur-buf)
               (select-window (get-buffer-window cur-buf))))
-        (run-hooks 'wl-summary-toggle-disp-off-hook)))
+       (run-hooks 'wl-summary-toggle-disp-off-hook)))
      (t
       (if (and wl-message-buffer
               (get-buffer-window wl-message-buffer)) ; already displayed
@@ -4906,7 +4908,8 @@ Reply to author if invoked with ARG."
   "Write a new draft from Summary."
   (interactive)
   (wl-draft nil nil nil nil nil
-           nil nil nil nil nil nil (current-buffer))
+           nil nil nil nil nil nil (current-buffer)
+           nil (wl-summary-buffer-folder-name))
   (run-hooks 'wl-mail-setup-hook)
   (mail-position-on-field "To"))
 
@@ -4915,31 +4918,37 @@ Reply to author if invoked with ARG."
     wl-folder-guess-mailing-list-by-refile-rule
     wl-folder-guess-mailing-list-by-folder-name)
   "Newsgroups or Mailing List address guess functions list.
-Call from `wl-summary-write-current-folder'")
+Call from `wl-summary-write-current-folder'.
+When guess function return nil, challenge next guess-function.")
 
 (defun wl-summary-write-current-folder (&optional folder)
   "Write message to current FOLDER's newsgroup or mailing-list.
 Use function list is `wl-summary-write-current-folder-functions'."
   (interactive)
-  (let (newsgroups to cc)
-    ;; default FOLDER is current buffer folder
-    (setq folder (or folder (wl-summary-buffer-folder-name)))
-    (let ((flist wl-summary-write-current-folder-functions)
-         guess-list)
-      (while flist
-       (setq guess-list (funcall (car flist) folder))
-       (if (or (nth 0 guess-list)      ; To:
-;;;            (nth 1 guess-list)      ; Cc:
-               (nth 2 guess-list))     ; Newsgroups:
-           (setq flist nil)
-         (setq flist (cdr flist))))
-      (when (null guess-list)
-       (error "Can't guess by folder %s" folder))
-      (wl-draft (nth 0 guess-list) nil nil ; To:
-               (nth 1 guess-list) nil  ; Cc:
-               (nth 2 guess-list))     ; Newsgroups:
-      (run-hooks 'wl-mail-setup-hook)
-      (mail-position-on-field "Subject"))))
+  ;; default FOLDER is current buffer folder
+  (setq folder (or folder (wl-summary-buffer-folder-name)))
+  (let ((func-list wl-summary-write-current-folder-functions)
+       guess-list guess-func)
+    (while func-list
+      (setq guess-list (funcall (car func-list) folder))
+      (if (null guess-list)
+         (setq func-list (cdr func-list))
+       (setq guess-func (car func-list))
+       (setq func-list nil)))
+    (when (null guess-func)
+      (error "Can't guess by folder %s" folder))
+    (unless (or (stringp (nth 0 guess-list))
+               (stringp (nth 1 guess-list))
+               (stringp (nth 2 guess-list)))
+      (error "Invalid value return guess function `%s'"
+            (symbol-name guess-func)))
+    (wl-draft (nth 0 guess-list) nil nil ; To:
+             (nth 1 guess-list) nil    ; Cc:
+             (nth 2 guess-list)        ; Newsgroups:
+             nil nil nil nil nil nil nil
+             folder)
+    (run-hooks 'wl-mail-setup-hook)
+    (mail-position-on-field "Subject")))
 
 (defun wl-summary-forward (&optional without-setup-hook)
   ""
@@ -4969,7 +4978,7 @@ Use function list is `wl-summary-write-current-folder-functions'."
       (if summary-buf
          (save-excursion
            (set-buffer summary-buf)
-           (setq subject 
+           (setq subject
                  (or (elmo-message-field folder number 'subject) ""))))
       (set-buffer mes-buf)
       (wl-draft-forward subject summary-buf)
@@ -5197,7 +5206,7 @@ Use function list is `wl-summary-write-current-folder-functions'."
                   (setq fld-buf (get-buffer wl-folder-buffer-name)))
              (if (setq fld-win (get-buffer-window fld-buf))
                  (delete-window fld-win)))
-          (setq wl-current-summary-buffer (current-buffer))
+         (setq wl-current-summary-buffer (current-buffer))
          (wl-summary-mark-as-read
           nil
           ;; not fetched, then change server-mark.
@@ -5222,11 +5231,19 @@ Use function list is `wl-summary-write-current-folder-functions'."
          (setq wl-summary-buffer-current-msg num)
          (when wl-summary-recenter
            (recenter (/ (- (window-height) 2) 2))
-           (if (not wl-summary-width)
+           (if (not wl-summary-indent-length-limit)
                (wl-horizontal-recenter)))
          (wl-highlight-summary-displaying)
-         (wl-message-buffer-prefetch-next folder num (current-buffer)
-                                          wl-summary-buffer-mime-charset)
+         (when wl-message-buffer-prefetch-depth
+           (if (not (< wl-message-buffer-prefetch-depth
+                       wl-message-buffer-cache-size))
+               (error (concat
+                       "`wl-message-buffer-prefetch-depth' must be smaller than "
+                       "`wl-message-buffer-cache-size' - 1.")))
+           (wl-message-buffer-prefetch-next folder num
+                                            wl-message-buffer-prefetch-depth
+                                            (current-buffer)
+                                            wl-summary-buffer-mime-charset))
          (run-hooks 'wl-summary-redisplay-hook))
       (message "No message to display."))))
 
@@ -5248,7 +5265,7 @@ Use function list is `wl-summary-write-current-folder-functions'."
          (setq wl-summary-buffer-current-msg num)
          (when wl-summary-recenter
            (recenter (/ (- (window-height) 2) 2))
-           (if (not wl-summary-width)
+           (if (not wl-summary-indent-length-limit)
                (wl-horizontal-recenter)))
          (wl-highlight-summary-displaying)
          (run-hooks 'wl-summary-redisplay-hook))
@@ -5275,7 +5292,7 @@ Use function list is `wl-summary-write-current-folder-functions'."
          (setq wl-summary-buffer-current-msg num)
          (when wl-summary-recenter
            (recenter (/ (- (window-height) 2) 2))
-           (if (not wl-summary-width)
+           (if (not wl-summary-indent-length-limit)
                (wl-horizontal-recenter)))
          (wl-highlight-summary-displaying)
          (run-hooks 'wl-summary-redisplay-hook))
@@ -5345,7 +5362,6 @@ Use function list is `wl-summary-write-current-folder-functions'."
   "Supersede current message."
   (interactive)
   (let ((summary-buf (current-buffer))
-       (mmelmo-force-fetch-entire-message t)
        message-buf from)
     (wl-summary-set-message-buffer-or-redisplay)
     (if (setq message-buf (wl-message-get-original-buffer))
@@ -5379,10 +5395,9 @@ Use function list is `wl-summary-write-current-folder-functions'."
 (defun wl-summary-save (&optional arg wl-save-dir)
   (interactive)
   (let ((filename)
-       (num (wl-summary-message-number))
-       (mmelmo-force-fetch-entire-message t))
+       (num (wl-summary-message-number)))
     (if (null wl-save-dir)
-       (setq wl-save-dir wl-tmp-dir))
+       (setq wl-save-dir wl-temporary-file-directory))
     (if num
        (save-excursion
          (setq filename (expand-file-name
@@ -5409,7 +5424,8 @@ Use function list is `wl-summary-write-current-folder-functions'."
       (narrow-to-region beg end)
       (goto-char (point-min))
       (let ((wl-save-dir
-            (wl-read-directory-name "Save to directory: " wl-tmp-dir)))
+            (wl-read-directory-name "Save to directory: "
+                                    wl-temporary-file-directory)))
        (if (null (file-exists-p wl-save-dir))
            (make-directory wl-save-dir))
        (if (eq wl-summary-buffer-view 'thread)
@@ -5566,15 +5582,15 @@ Use function list is `wl-summary-write-current-folder-functions'."
       (set-buffer tmp-buf)
       (message "Exec %s..." wl-prog-uudecode)
       (unwind-protect
-         (let ((decode-dir wl-tmp-dir))
+         (let ((decode-dir wl-temporary-file-directory))
            (if (not wl-prog-uudecode-no-stdout-option)
                (setq filename (read-file-name "Save to file: "
                                               (expand-file-name
                                                (elmo-safe-filename filename)
-                                               wl-tmp-dir)))
+                                               wl-temporary-file-directory)))
              (setq decode-dir
                    (wl-read-directory-name "Save to directory: "
-                                           wl-tmp-dir))
+                                           wl-temporary-file-directory))
              (setq filename (expand-file-name filename decode-dir)))
            (if (file-exists-p filename)
                (or (yes-or-no-p (format "File %s exists. Save anyway? "