* wl-summary.el (wl-summary-resend-bounced-mail): Loosen regexp.
[elisp/wanderlust.git] / wl / wl-summary.el
index 01d62f9..5853eb0 100644 (file)
   (` (and wl-summary-buffer-elmo-folder
          (elmo-folder-msgdb wl-summary-buffer-elmo-folder))))
 
-(defvar wl-summary-buffer-folder-indicator nil)
 (defvar wl-summary-buffer-disp-msg    nil)
 (defvar wl-summary-buffer-disp-folder nil)
 (defvar wl-summary-buffer-refile-list nil)
 (defvar wl-summary-buffer-delete-list nil)
 (defvar wl-summary-buffer-last-displayed-msg nil)
 (defvar wl-summary-buffer-current-msg nil)
-(defvar wl-summary-buffer-unread-status " (0 new/0 unread)")
 (defvar wl-summary-buffer-unread-count 0)
 (defvar wl-summary-buffer-new-count    0)
 (defvar wl-summary-buffer-mime-charset  nil)
 (defvar wl-summary-buffer-message-modified nil)
 (defvar wl-summary-buffer-mark-modified nil)
 (defvar wl-summary-buffer-thread-modified nil)
+
 (defvar wl-summary-buffer-number-column nil)
-(defvar wl-summary-buffer-number-regexp nil)
+(defvar wl-summary-buffer-temp-mark-column nil)
+(defvar wl-summary-buffer-persistent-mark-column nil)
+
 (defvar wl-summary-buffer-persistent nil)
 (defvar wl-summary-buffer-thread-nodes nil)
 (defvar wl-summary-buffer-target-mark-list nil)
 (defvar wl-summary-buffer-number-list nil)
 (defvar wl-summary-buffer-msgdb nil)
 (defvar wl-summary-buffer-folder-name nil)
+(defvar wl-summary-buffer-line-formatter nil)
+(defvar wl-summary-buffer-line-format nil)
+(defvar wl-summary-buffer-mode-line-formatter nil)
+(defvar wl-summary-buffer-mode-line nil)
 
 (defvar wl-thread-indent-level-internal nil)
 (defvar wl-thread-have-younger-brother-str-internal nil)
 
 (defvar wl-summary-get-petname-function 'wl-address-get-petname-1)
 
-(defvar wl-summary-message-regexp "^ *\\(-?[0-9]+\\)")
-
 (defvar wl-summary-shell-command-last "")
 
 (defvar wl-ps-preprint-hook nil)
 (make-variable-buffer-local 'wl-summary-buffer-copy-list)
 (make-variable-buffer-local 'wl-summary-buffer-target-mark-list)
 (make-variable-buffer-local 'wl-summary-buffer-delete-list)
-(make-variable-buffer-local 'wl-summary-buffer-folder-indicator)
 (make-variable-buffer-local 'wl-summary-buffer-last-displayed-msg)
-(make-variable-buffer-local 'wl-summary-buffer-unread-status)
 (make-variable-buffer-local 'wl-summary-buffer-unread-count)
 (make-variable-buffer-local 'wl-summary-buffer-new-count)
 (make-variable-buffer-local 'wl-summary-buffer-mime-charset)
 (make-variable-buffer-local 'wl-summary-buffer-mark-modified)
 (make-variable-buffer-local 'wl-summary-buffer-thread-modified)
 (make-variable-buffer-local 'wl-summary-buffer-number-column)
-(make-variable-buffer-local 'wl-summary-buffer-number-regexp)
+(make-variable-buffer-local 'wl-summary-buffer-temp-mark-column)
+(make-variable-buffer-local 'wl-summary-buffer-persistent-mark-column)
 (make-variable-buffer-local 'wl-summary-buffer-persistent)
 (make-variable-buffer-local 'wl-summary-buffer-thread-nodes)
 (make-variable-buffer-local 'wl-summary-buffer-prev-refile-destination)
 (make-variable-buffer-local 'wl-summary-buffer-number-list)
 (make-variable-buffer-local 'wl-summary-buffer-msgdb)
 (make-variable-buffer-local 'wl-summary-buffer-folder-name)
+(make-variable-buffer-local 'wl-summary-buffer-line-formatter)
+(make-variable-buffer-local 'wl-summary-buffer-line-format)
+(make-variable-buffer-local 'wl-summary-buffer-mode-line-formatter)
+(make-variable-buffer-local 'wl-summary-buffer-mode-line)
+
+(defvar wl-datevec)
+(defvar wl-thr-indent-string)
+(defvar wl-thr-children-number)
+(defvar wl-thr-linked)
+(defvar wl-message-entity)
+(defvar wl-parent-message-entity)
+(defvar wl-temp-mark)
+(defvar wl-persistent-mark)
 
 ;; internal functions (dummy)
 (unless (fboundp 'wl-summary-append-message-func-internal)
-  (defun wl-summary-append-message-func-internal (entity overview
-                                                        mark-alist update
+  (defun wl-summary-append-message-func-internal (entity msgdb update
                                                         &optional force-insert)))
-(unless (fboundp 'wl-summary-from-func-internal)
-  (defun wl-summary-from-func-internal (from)
-    from))
-(unless (fboundp 'wl-summary-subject-func-internal)
-  (defun wl-summary-subject-func-internal (subject)
-    subject))
-(unless (fboundp 'wl-summary-subject-filter-func-internal)
-  (defun wl-summary-subject-filter-func-internal (subject)
-    subject))
 
 (defmacro wl-summary-sticky-buffer-name (name)
   (` (concat wl-summary-buffer-name ":" (, name))))
       (substring subject-string (match-end 0))
     subject-string))
 
-(eval-when-compile (defvar-maybe entity nil)) ; silence byte compiler.
 (defun wl-summary-default-from (from)
   (let (retval tos ng)
     (unless
                           (wl-summary-buffer-folder-name))
             (wl-address-user-mail-address-p from)
             (cond
-             ((and (setq tos (elmo-msgdb-overview-entity-get-to entity))
+             ((and (setq tos (elmo-msgdb-overview-entity-get-to
+                              wl-message-entity))
                    (not (string= "" tos)))
               (setq retval
                     (concat "To:"
                                 (eword-decode-string
                                  (if wl-use-petname
                                      (or
-                                      (funcall wl-summary-get-petname-function to)
+                                      (funcall
+                                       wl-summary-get-petname-function to)
                                       (car
                                        (std11-extract-address-components to))
                                       to)
                              (wl-parse-addresses tos)
                              ","))))
              ((setq ng (elmo-msgdb-overview-entity-get-extra-field
-                        entity "newsgroups"))
+                        wl-message-entity "newsgroups"))
               (setq retval (concat "Ng:" ng)))))
       (if wl-use-petname
          (setq retval (or (funcall wl-summary-get-petname-function from)
          string)
     string))
 
+(defvar wl-summary-sort-specs '(number date subject from list-info))
+(defvar wl-summary-default-sort-spec 'date)
+
 (defvar wl-summary-mode-menu-spec
   '("Summary"
     ["Read" wl-summary-read t]
      ["By Number" wl-summary-sort-by-number t]
      ["By Date" wl-summary-sort-by-date t]
      ["By From" wl-summary-sort-by-from t]
-     ["By Subject" wl-summary-sort-by-subject t])
+     ["By Subject" wl-summary-sort-by-subject t]
+     ["By List Info" wl-summary-sort-by-list-info t])
     "----"
     ("Message Operation"
      ["Mark as read"    wl-summary-mark-as-read t]
     "----"
     ("Writing Messages"
      ["Write a message" wl-summary-write t]
+     ["Write for current folder" wl-summary-write-current-folder t]
      ["Reply" wl-summary-reply t]
      ["Reply with citation" wl-summary-reply-with-citation t]
      ["Forward" wl-summary-forward t])
   (define-key wl-summary-mode-map "-"    'wl-summary-prev-line-content)
   (define-key wl-summary-mode-map "\e\r" 'wl-summary-prev-line-content)
   (define-key wl-summary-mode-map "g"    'wl-summary-goto-folder)
+  (define-key wl-summary-mode-map "G"    'wl-summary-goto-folder-sticky)
   (define-key wl-summary-mode-map "c"    'wl-summary-mark-as-read-all)
 ;  (define-key wl-summary-mode-map "D"    'wl-summary-drop-unsync)
 
   (define-key wl-summary-mode-map "e"     'wl-summary-save)
   (define-key wl-summary-mode-map "\C-c\C-o" 'wl-jump-to-draft-buffer)
   (define-key wl-summary-mode-map "\C-c\C-a" 'wl-addrmgr)
+  (define-key wl-summary-mode-map "\C-c\C-p" 'wl-summary-previous-buffer)
+  (define-key wl-summary-mode-map "\C-c\C-n" 'wl-summary-next-buffer)
   (define-key wl-summary-mode-map "H"    'wl-summary-redisplay-all-header)
   (define-key wl-summary-mode-map "M"    'wl-summary-redisplay-no-mime)
   (define-key wl-summary-mode-map "B"    'wl-summary-burst)
   (define-key wl-summary-mode-map "Z"    'wl-status-update)
   (define-key wl-summary-mode-map "#"    'wl-summary-print-message)
   (define-key wl-summary-mode-map "|"    'wl-summary-pipe-message)
+  (define-key wl-summary-mode-map "z"    'wl-summary-suspend)
   (define-key wl-summary-mode-map "q"    'wl-summary-exit)
   (define-key wl-summary-mode-map "Q"    'wl-summary-force-exit)
 
   (define-key wl-summary-mode-map "mA"   'wl-summary-target-mark-reply-with-citation)
   (define-key wl-summary-mode-map "mf"   'wl-summary-target-mark-forward)
   (define-key wl-summary-mode-map "m?"   'wl-summary-target-mark-pick)
+  (define-key wl-summary-mode-map "m#"   'wl-summary-target-mark-print)
+  (define-key wl-summary-mode-map "m|"   'wl-summary-target-mark-pipe)
 
   ;; region commands
   (define-key wl-summary-mode-map "r"    (make-sparse-keymap))
   (define-key wl-summary-mode-map "\M-t" 'wl-toggle-plugged)
   (define-key wl-summary-mode-map "\C-t" 'wl-plugged-change)
   ;;
+  (define-key wl-summary-mode-map "\C-x\C-s" 'wl-summary-save-status)
   (wl-summary-setup-mouse)
   (easy-menu-define
    wl-summary-mode-menu
 (defun wl-summary-display-top ()
   (interactive)
   (goto-char (point-min))
+  (when wl-summary-lazy-highlight
+    (wl-highlight-summary-window))
   (if wl-summary-buffer-disp-msg
       (wl-summary-redisplay)))
 
   (interactive)
   (goto-char (point-max))
   (forward-line -1)
+  (when wl-summary-lazy-highlight
+    (wl-highlight-summary-window))
   (if wl-summary-buffer-disp-msg
       (wl-summary-redisplay)))
 
-(defun wl-summary-count-unread (mark-alist)
-  (let ((new 0)
-       (unread 0)
-       mark)
-    (while mark-alist
-      (setq mark (cadr (car mark-alist)))
-      (and mark
-          (cond
-           ((string= mark wl-summary-new-mark)
-            (setq new (+ 1 new)))
-           ((or (string= mark wl-summary-unread-uncached-mark)
-                (string= mark wl-summary-unread-cached-mark))
-            (setq unread (+ 1 unread)))))
-      (setq mark-alist (cdr mark-alist)))
+(defun wl-summary-count-unread ()
+  (let ((pair
+        (elmo-msgdb-count-marks (wl-summary-buffer-msgdb)
+                                wl-summary-new-mark
+                                (list wl-summary-unread-uncached-mark
+                                      wl-summary-unread-cached-mark))))
     (if (eq major-mode 'wl-summary-mode)
-       (setq wl-summary-buffer-new-count new
-             wl-summary-buffer-unread-count unread))
-    (+ new unread)))
+       (setq wl-summary-buffer-new-count (car pair)
+             wl-summary-buffer-unread-count (cdr pair)))
+    pair))
 
 (defun wl-summary-message-string (&optional use-cache)
   "Return full body string of current message.
@@ -595,8 +609,8 @@ If ARG is non-nil, Supersedes message"
       (wl-summary-supersedes-message)
     (if (string= (wl-summary-buffer-folder-name) wl-draft-folder)
        (if (wl-summary-message-number)
-           (unwind-protect
-               (wl-draft-reedit (wl-summary-message-number))
+           (progn
+             (wl-draft-reedit (wl-summary-message-number))
              (if (wl-message-news-p)
                  (mail-position-on-field "Newsgroups")
                (mail-position-on-field "To"))
@@ -627,7 +641,7 @@ you."
                              (concat "^--" boundary "\n"
                                      "\\([Cc]ontent-[Dd]escription:.*\n\\)?"
                                      "[Cc]ontent-[Tt]ype:[ \t]+"
-                                     "\\(message/rfc822\\|text/rfc822-headers\\)\n"
+                                     "\\(message/rfc822\\|text/rfc822-headers\\).*\n"
                                      "\\(.+\n\\)*\n") nil t))
                 (re-search-forward
                  (concat "\n\\(--" boundary "\\)--\n") nil t))
@@ -690,14 +704,39 @@ you."
        (kill-buffer (current-buffer)))
       (message "Resending message to %s...done" address))))
 
+(defun wl-summary-detect-mark-position ()
+  (let ((column wl-summary-buffer-number-column)
+       (formatter wl-summary-buffer-line-formatter)
+       (dummy-temp (char-to-string 200))
+       (dummy-persistent (char-to-string 201))
+       temp persistent)
+    (with-temp-buffer
+      (setq wl-summary-buffer-number-column column
+           wl-summary-buffer-line-formatter formatter)
+      (insert
+       (wl-summary-create-line
+       (elmo-msgdb-make-entity
+        :number 10000
+        :from "foo"
+        :subject "bar"
+        :size 100)
+       nil
+       dummy-temp
+       dummy-persistent))
+      (goto-char (point-min))
+      (setq temp (save-excursion
+                  (search-forward dummy-temp nil t)
+                  (current-column))
+           persistent (save-excursion
+                        (search-forward dummy-persistent nil t)
+                        (current-column))))
+    (setq wl-summary-buffer-temp-mark-column temp
+         wl-summary-buffer-persistent-mark-column persistent)))
+
 (defun wl-summary-buffer-set-folder (folder)
   (if (stringp folder)
       (setq folder (wl-folder-get-elmo-folder folder)))
   (setq wl-summary-buffer-elmo-folder folder)
-  (setq wl-summary-buffer-folder-indicator
-       (if (memq 'modeline wl-use-folder-petname)
-           (wl-folder-get-petname (elmo-folder-name-internal folder))
-         (elmo-folder-name-internal folder)))
   (make-local-variable 'wl-message-buffer)
   (setq wl-summary-buffer-mime-charset (or (wl-get-assoc-list-value
                                            wl-folder-mime-charset-alist
@@ -712,6 +751,23 @@ you."
        (wl-get-assoc-list-value
         wl-folder-thread-indent-set-alist
         (elmo-folder-name-internal folder)))
+  (setq wl-summary-buffer-number-column
+       (or (wl-get-assoc-list-value wl-summary-number-column-alist
+                                    (wl-summary-buffer-folder-name))
+           wl-summary-default-number-column))
+  (wl-line-formatter-setup
+   wl-summary-buffer-line-formatter
+   (setq wl-summary-buffer-line-format
+        (or (wl-get-assoc-list-value
+             wl-folder-summary-line-format-alist
+             (elmo-folder-name-internal folder))
+            wl-summary-line-format))
+   wl-summary-line-format-spec-alist)
+  (wl-line-formatter-setup
+   wl-summary-buffer-mode-line-formatter
+   wl-summary-mode-line-format
+   wl-summary-mode-line-format-spec-alist)
+  (wl-summary-detect-mark-position)
   (setq wl-summary-buffer-persistent
        (wl-folder-persistent-p (elmo-folder-name-internal folder)))
   (elmo-folder-set-persistent-internal folder wl-summary-buffer-persistent)
@@ -739,13 +795,6 @@ you."
    wl-thread-space-str-internal
    (or (nth 5 wl-summary-buffer-thread-indent-set)
        wl-thread-space-str))
-  (setq wl-thread-indent-regexp
-       (concat
-        (regexp-quote wl-thread-have-younger-brother-str-internal) "\\|"
-        (regexp-quote wl-thread-youngest-child-str-internal) "\\|"
-        (regexp-quote wl-thread-vertical-str-internal) "\\|"
-        (regexp-quote wl-thread-horizontal-str-internal) "\\|"
-        (regexp-quote wl-thread-space-str-internal)))
   (run-hooks 'wl-summary-buffer-set-folder-hook))
 
 (defun wl-summary-mode ()
@@ -767,13 +816,17 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
 ;;;(make-local-variable 'tab-width)
 ;;;(setq tab-width 1)
   (buffer-disable-undo (current-buffer))
-  (wl-mode-line-buffer-identification '("Wanderlust: "
-                                       wl-summary-buffer-folder-indicator
-                                       wl-summary-buffer-unread-status))
+  (setq selective-display t
+       selective-display-ellipses nil)
+  (wl-mode-line-buffer-identification '(wl-summary-buffer-mode-line))
   (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))
+    (if wl-on-xemacs 
+       (progn
+         (make-local-variable 'pre-idle-hook)
+         (add-hook 'pre-idle-hook 'wl-highlight-summary-window))
+      (make-local-variable 'window-scroll-functions)
+      (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))
@@ -809,6 +862,49 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
   (string< (elmo-msgdb-overview-entity-get-subject-no-decode x)
           (elmo-msgdb-overview-entity-get-subject-no-decode y)))
 
+(defun wl-summary-get-list-info (entity)
+  "Returns (\"ML-name\" . ML-count) of ENTITY."
+  (let (sequence ml-name ml-count subject return-path)
+    (setq sequence (elmo-msgdb-overview-entity-get-extra-field
+                   entity "x-sequence")
+         ml-name (or (elmo-msgdb-overview-entity-get-extra-field
+                      entity "x-ml-name")
+                     (and sequence
+                          (car (split-string sequence " "))))
+         ml-count (or (elmo-msgdb-overview-entity-get-extra-field
+                       entity "x-mail-count")
+                      (elmo-msgdb-overview-entity-get-extra-field
+                       entity "x-ml-count")
+                      (and sequence
+                           (cadr (split-string sequence " ")))))
+    (and (setq subject (elmo-msgdb-overview-entity-get-subject
+                       entity))
+        (setq subject (elmo-delete-char ?\n subject))
+        (string-match "^\\s(\\(\\S)+\\)[ :]\\([0-9]+\\)\\s)[ \t]*" subject)
+        (progn
+          (or ml-name (setq ml-name (match-string 1 subject)))
+          (or ml-count (setq ml-count (match-string 2 subject)))))
+    (and (setq return-path
+              (elmo-msgdb-overview-entity-get-extra-field
+               entity "return-path"))
+        (string-match "^<\\([^@>]+\\)-return-\\([0-9]+\\)-" return-path)
+        (progn
+          (or ml-name (setq ml-name (match-string 1 return-path)))
+          (or ml-count (setq ml-count (match-string 2 return-path)))))
+    (cons (and ml-name (car (split-string ml-name " ")))
+         (and ml-count (string-to-int ml-count)))))
+
+(defun wl-summary-overview-entity-compare-by-list-info (x y)
+  "Compare entity X and Y by mailing-list info."
+  (let* ((list-info-x (wl-summary-get-list-info x))
+        (list-info-y (wl-summary-get-list-info y)))
+    (if (equal list-info-x list-info-y)
+       (wl-summary-overview-entity-compare-by-date x y)
+      (if (string= (car list-info-x) (car list-info-y))
+         (< (or (cdr list-info-x) 0)
+            (or (cdr list-info-y) 0))
+       (string< (car list-info-x) (car list-info-y))))))
+
 (defun wl-summary-sort-by-date ()
   (interactive)
   (wl-summary-rescan "date"))
@@ -821,6 +917,9 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
 (defun wl-summary-sort-by-from ()
   (interactive)
   (wl-summary-rescan "from"))
+(defun wl-summary-sort-by-list-info ()
+  (interactive)
+  (wl-summary-rescan "list-info"))
 
 (defun wl-summary-rescan (&optional sort-by)
   "Rescan current folder without updating."
@@ -829,7 +928,6 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
         (msgdb (wl-summary-buffer-msgdb))
         (overview (elmo-msgdb-get-overview msgdb))
         (number-alist (elmo-msgdb-get-number-alist msgdb))
-        (mark-alist (elmo-msgdb-get-mark-alist msgdb))
         (elmo-mime-charset wl-summary-buffer-mime-charset)
         i percent num
         gc-message entity
@@ -839,7 +937,6 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
         expunged)
     (fset 'wl-summary-append-message-func-internal
          (wl-summary-get-append-message-func))
-    (wl-summary-buffer-number-column-detect nil)
     (erase-buffer)
     (message "Re-scanning...")
     (setq i 0)
@@ -864,11 +961,9 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
     (setq wl-summary-buffer-delete-list nil)
     (setq wl-summary-delayed-update nil)
     (elmo-kill-buffer wl-summary-search-buf-name)
-    (message "Constructing summary structure...")
     (while curp
       (setq entity (car curp))
-      (wl-summary-append-message-func-internal entity overview mark-alist
-                                              nil)
+      (wl-summary-append-message-func-internal entity msgdb nil)
       (setq curp (cdr curp))
       (when (> num elmo-display-progress-threshold)
        (setq i (+ i 1))
@@ -883,8 +978,7 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
                 (elmo-msgdb-overview-entity-get-number
                  (cdar wl-summary-delayed-update)))
        (wl-summary-append-message-func-internal
-        (cdar wl-summary-delayed-update)
-        overview mark-alist nil t)
+        (cdar wl-summary-delayed-update) msgdb nil t)
        (setq wl-summary-delayed-update (cdr wl-summary-delayed-update))))
     (message "Constructing summary structure...done")
     (set-buffer cur-buf)
@@ -903,9 +997,7 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
                 (setq expunged (wl-summary-score-update-all-lines)))
        (message "%d message(s) are expunged by scoring." (length expunged))))
     (wl-summary-set-message-modified)
-    (wl-summary-count-unread
-     (elmo-msgdb-get-mark-alist
-      (elmo-folder-msgdb wl-summary-buffer-elmo-folder)))
+    (wl-summary-count-unread)
     (wl-summary-update-modeline)
     (goto-char (point-max))
     (forward-line -1)
@@ -996,7 +1088,7 @@ 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.
@@ -1006,6 +1098,16 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
                 (wl-summary-thread-modified-p)))
        (wl-summary-save-view-cache))))
 
+(defun wl-summary-save-status ()
+  "Save summary view and msgdb."
+  (interactive)
+  (if (interactive-p) (message "Saving summary status..."))
+  (wl-summary-save-view)
+  (elmo-folder-commit wl-summary-buffer-elmo-folder)
+  (elmo-folder-check wl-summary-buffer-elmo-folder)
+  (if wl-use-scoring (wl-score-save))
+  (if (interactive-p) (message "Saving summary status...done.")))
+
 (defun wl-summary-force-exit ()
   "Exit current summary.  Buffer is deleted even the buffer is sticky."
   (interactive)
@@ -1022,16 +1124,16 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
     (run-hooks 'wl-summary-exit-pre-hook)
     (if wl-summary-buffer-exit-function
        (funcall wl-summary-buffer-exit-function)
-      (wl-summary-cleanup-temp-marks sticky)
+      (if (or force-exit (not sticky))
+         (wl-summary-cleanup-temp-marks sticky))
       (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)
@@ -1079,6 +1181,11 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
              (kill-buffer summary-buf)))
        (run-hooks 'wl-summary-exit-hook)))))
 
+(defun wl-summary-suspend ()
+  (interactive)
+  (wl-summary-exit)
+  (wl-folder-suspend))
+
 (defun wl-summary-sync-force-update (&optional unset-cursor no-check)
   (interactive)
   (wl-summary-sync-update unset-cursor nil no-check))
@@ -1097,8 +1204,7 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
   (setq wl-summary-buffer-target-mark-list nil)
   (setq wl-summary-buffer-refile-list nil)
   (setq wl-summary-buffer-copy-list nil)
-  (setq wl-summary-buffer-delete-list nil)
-  (wl-summary-buffer-number-column-detect nil))
+  (setq wl-summary-buffer-delete-list nil))
 
 (defun wl-summary-sync (&optional unset-cursor force-range)
   (interactive)
@@ -1117,12 +1223,15 @@ 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
-           (wl-folder-get-elmo-folder (concat "/" range "/"
-                                              (elmo-folder-name-internal
-                                               folder)))
+          (wl-summary-goto-folder-subr (concat "/" range "/"
+                                               (elmo-folder-name-internal
+                                                folder))
            'force-update nil nil t))
          (t
           (wl-summary-sync-update unset-cursor
@@ -1162,8 +1271,8 @@ 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 ? )
@@ -1261,76 +1370,76 @@ If ARG is non-nil, checking is omitted."
   ;; prefetching procedure.
   (save-excursion
     (let* ((msgdb (wl-summary-buffer-msgdb))
-          (mark-alist (elmo-msgdb-get-mark-alist msgdb))
           (number-alist (elmo-msgdb-get-number-alist msgdb))
           (message-id (cdr (assq number number-alist)))
           (ov (elmo-msgdb-overview-get-entity message-id msgdb))
-          (entity ov)
+          (wl-message-entity ov)
+          (entity ov)                  ; backward compatibility.
           (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)
+                           (or (and (null wl-prefetch-confirm) arg)
+                               (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
+                           17
+                           (funcall wl-summary-from-function
+                            (eword-decode-string
+                             (elmo-delete-char
+                              ?\"
+                              (or
+                               (elmo-msgdb-overview-entity-get-from ov)
+                               "??")))))) " ]")
+                       size))))
+             (message ""))             ; flush.
+           (setq mark (elmo-msgdb-get-mark msgdb number))
+           (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)))
+                   (elmo-msgdb-set-mark msgdb number new-mark)
+                   (or new-mark (setq new-mark " "))
+                   (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
@@ -1352,27 +1461,25 @@ If ARG is non-nil, checking is omitted."
        (message "Collecting marks...")
        (goto-char (point-min))
        (while (not (eobp))
-         (beginning-of-line)
-         (when (looking-at "^ *\\(-?[0-9]+\\)[^0-9]\\([^0-9]\\)")
-           (setq mark (wl-match-buffer 2))
-           (setq msg (string-to-int (wl-match-buffer 1)))
-           (if (or (and (null prefetch-marks)
-                        msg
-                        (null (elmo-file-cache-exists-p
-                               (cdr (assq msg
-                                          (elmo-msgdb-get-number-alist
-                                           (wl-summary-buffer-msgdb)))))))
-                   (member mark prefetch-marks))
-               (setq targets (nconc targets (list msg))))
-           (setq entity (wl-thread-get-entity msg))
-           (if (or (not (eq wl-summary-buffer-view 'thread))
-                   (wl-thread-entity-get-opened entity))
-               (); opened. no hidden children.
-             ;; hidden children!!
-             (setq targets (nconc
-                            targets
-                            (wl-thread-get-children-msgs-uncached
-                             msg prefetch-marks)))))
+         (setq mark (wl-summary-persistent-mark)
+               msg (wl-summary-message-number))
+         (if (or (and (null prefetch-marks)
+                      msg
+                      (null (elmo-file-cache-exists-p
+                             (elmo-message-field
+                              wl-summary-buffer-elmo-folder
+                              msg
+                              'message-id))))
+                 (member mark prefetch-marks))
+             (setq targets (nconc targets (list msg))))
+         (setq entity (wl-thread-get-entity msg))
+         (if (or (not (eq wl-summary-buffer-view 'thread))
+                 (wl-thread-entity-get-opened entity))
+             (); opened. no hidden children.
+           (setq targets (nconc
+                          targets
+                          (wl-thread-get-children-msgs-uncached
+                           msg prefetch-marks))))
          (forward-line 1))
        (setq length (length targets))
        (message "Prefetching...")
@@ -1405,36 +1512,17 @@ If ARG is non-nil, checking is omitted."
   "Prefetch current message."
   (interactive "P")
   (save-excursion
-    (save-match-data
-      (beginning-of-line)
-      (when (looking-at "^ *\\(-?[0-9]+\\)[^0-9]\\([^0-9]\\)")
-       (goto-char (match-beginning 2))
-       (let ((inhibit-read-only t)
-             (buffer-read-only nil)
-             (beg (match-beginning 2))
-             (end (match-end 2))
-             mark)
-         (setq mark (wl-summary-prefetch-msg
-                     (string-to-int (wl-match-buffer 1)) arg))
-         (when mark
-           (delete-region beg end)
-           (insert mark)
-           (if wl-summary-highlight
-               (wl-highlight-summary-current-line)))
-         (set-buffer-modified-p nil)
-         mark)))))
-
-(defun wl-summary-delete-all-status-marks-on-buffer ()
-  (interactive)
-  (save-excursion
-    (goto-char (point-min))
     (let ((inhibit-read-only t)
          (buffer-read-only nil)
-         (case-fold-search nil))
-      (while (re-search-forward
-             (concat "^" wl-summary-buffer-number-regexp ".\\(.\\)") nil t)
-       (delete-region (match-beginning 1) (match-end 1))
-       (insert " ")))))
+         (mark (wl-summary-persistent-mark)))
+      (setq mark (wl-summary-prefetch-msg (wl-summary-message-number) arg))
+      (when mark
+       (delete-backward-char 1)
+       (insert mark)
+       (if wl-summary-highlight
+           (wl-highlight-summary-current-line)))
+      (set-buffer-modified-p nil)
+      mark)))
 
 (defun wl-summary-delete-marks-on-buffer (marks)
   (while marks
@@ -1461,41 +1549,21 @@ If ARG is non-nil, checking is omitted."
 
 (defun wl-summary-delete-all-temp-marks-on-buffer (&optional sticky)
   ;; for summary view cache saving.
-  (interactive)
   (save-excursion
     (goto-char (point-min))
     (let ((inhibit-read-only t)
-         (buffer-read-only nil)
-         (case-fold-search nil)
-         (regexp (concat "^" wl-summary-buffer-number-regexp "\\([^ ]\\)" )))
-      (while (re-search-forward regexp nil t)
-       (delete-region (match-beginning 1) (match-end 1))
-       (insert " ")
-       (if (and sticky wl-summary-highlight)
-           (wl-highlight-summary-current-line))))))
-
-(defun wl-summary-delete-all-marks (mark-alist mark)
-  "Delete all MARKs in MARK-ALIST."
-  (let ((malist mark-alist)
-       (ret-val mark-alist)
-       entity)
-    (while malist
-      (setq entity (car malist))
-      (if (string= (cadr entity) mark)
-         ;; delete this entity
-         (setq ret-val (delete entity ret-val)))
-      (setq malist (cdr malist)))
-    ret-val))
-
-;; Does not work correctly...
+         (buffer-read-only nil))
+       (while (not (eobp))
+       (unless (string= (wl-summary-temp-mark) " ")
+         (delete-backward-char 1)
+         (insert " "))
+       (forward-line 1)))))
+
 (defun wl-summary-mark-as-read-region (beg end)
   (interactive "r")
   (save-excursion
     (save-restriction
       (narrow-to-region beg end)
-;;; use narrowing.
-;;;   (save-excursion (goto-char end)
-;;;                  (end-of-line) (point)))
       (goto-char (point-min))
       (if (eq wl-summary-buffer-view 'thread)
          (progn
@@ -1505,19 +1573,18 @@ If ARG is non-nil, checking is omitted."
                     children)
                (if (wl-thread-entity-get-opened entity)
                    ;; opened...mark line.
-                   ;; Crossposts are not processed
-                   (wl-summary-mark-as-read t)
+                   (wl-summary-mark-as-read number)
                  ;; closed
-                 (wl-summary-mark-as-read t) ; mark itself.
+                 (wl-summary-mark-as-read number) ; mark itself.
                  (setq children (wl-thread-get-children-msgs number))
                  (while children
-                   (wl-summary-mark-as-read t nil nil (car children))
+                   (wl-summary-mark-as-read (car children))
                    (setq children (cdr children))))
                (forward-line 1))))
        (while (not (eobp))
-         (wl-summary-mark-as-read t)
+         (wl-summary-mark-as-read (wl-summary-message-number))
          (forward-line 1)))))
-  (wl-summary-count-unread (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+  (wl-summary-count-unread)
   (wl-summary-update-modeline))
 
 (defun wl-summary-mark-as-unread-region (beg end)
@@ -1550,7 +1617,7 @@ If ARG is non-nil, checking is omitted."
        (while (not (eobp))
          (wl-summary-mark-as-unread)
          (forward-line 1)))))
-  (wl-summary-count-unread (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+  (wl-summary-count-unread)
   (wl-summary-update-modeline))
 
 (defun wl-summary-mark-as-important-region (beg end)
@@ -1581,7 +1648,7 @@ If ARG is non-nil, checking is omitted."
        (while (not (eobp))
          (wl-summary-mark-as-important)
          (forward-line 1)))))
-  (wl-summary-count-unread (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+  (wl-summary-count-unread)
   (wl-summary-update-modeline))
 
 (defun wl-summary-mark-as-read-all ()
@@ -1591,9 +1658,6 @@ If ARG is non-nil, checking is omitted."
       (let* ((folder wl-summary-buffer-elmo-folder)
             (cur-buf (current-buffer))
             (msgdb (wl-summary-buffer-msgdb))
-;;;         (number-alist (elmo-msgdb-get-number-alist msgdb))
-            (mark-alist (elmo-msgdb-get-mark-alist msgdb))
-            (malist mark-alist)
             (inhibit-read-only t)
             (buffer-read-only nil)
             (case-fold-search nil)
@@ -1607,36 +1671,34 @@ If ARG is non-nil, checking is omitted."
                                         wl-summary-new-mark)))
        (save-excursion
          (goto-char (point-min))
-         (while (re-search-forward "^ *\\(-?[0-9]+\\)[^0-9]\\([^0-9 ]\\)" nil t)
-           (setq msg (string-to-int (wl-match-buffer 1)))
-           (setq mark (wl-match-buffer 2))
-           (when (and (not (string= mark wl-summary-important-mark))
+         (while (not (eobp))
+           (setq msg (wl-summary-message-number))
+           (setq mark (wl-summary-persistent-mark))
+           (when (and (not (string= mark " "))
+                      (not (string= mark wl-summary-important-mark))
                       (not (string= mark wl-summary-read-uncached-mark)))
-             (delete-region (match-beginning 2) (match-end 2))
+             (delete-backward-char 1)
              (if (or (not (elmo-message-use-cache-p folder msg))
                      (string= mark wl-summary-unread-cached-mark))
                  (progn
                    (insert " ")
-                   (setq mark-alist
-                         (elmo-msgdb-mark-set
-                          mark-alist
-                          msg
-;;; Use msg instead of (cdr (assq msg number-alist)).
-;;;                       (cdr (assq msg number-alist))
-                          nil)))
+                   (elmo-msgdb-set-mark msgdb msg nil))
                ;; New mark and unread-uncached mark
                (insert wl-summary-read-uncached-mark)
-               (setq mark-alist
-                     (elmo-msgdb-mark-set mark-alist
-                                          msg
-;;;                                       (cdr (assq msg number-alist))
-                                          wl-summary-read-uncached-mark)))
+               (elmo-msgdb-set-mark
+                msgdb msg wl-summary-read-uncached-mark))
              (if wl-summary-highlight
-                 (wl-highlight-summary-current-line nil nil t)))))
-       (setq mark-alist (wl-summary-set-as-read-mark-alist mark-alist))
+                 (wl-highlight-summary-current-line nil nil t)))
+           (forward-line 1)))
+       (elmo-folder-replace-marks
+        folder
+        (list (cons wl-summary-unread-cached-mark
+                    nil)
+              (cons wl-summary-unread-uncached-mark
+                    wl-summary-read-uncached-mark)
+              (cons wl-summary-new-mark
+                    wl-summary-read-uncached-mark)))
        (wl-summary-set-mark-modified)
-       (set-buffer cur-buf); why is this needed???
-       (elmo-msgdb-set-mark-alist msgdb mark-alist)
        (wl-folder-update-unread (wl-summary-buffer-folder-name) 0)
        (setq wl-summary-buffer-unread-count 0)
        (setq wl-summary-buffer-new-count    0)
@@ -1652,42 +1714,34 @@ If ARG is non-nil, checking is omitted."
           (buffer-read-only nil)
           (folder wl-summary-buffer-elmo-folder)
           (msgdb (wl-summary-buffer-msgdb))
-          (mark-alist (elmo-msgdb-get-mark-alist msgdb))
           (number-alist (elmo-msgdb-get-number-alist msgdb))
           (case-fold-search nil)
           mark number unread new-mark)
-;;;   (re-search-backward "^ *[0-9]+..[0-9]+/[0-9]+" nil t) ; set cursor line
-      (beginning-of-line)
-      (when (looking-at "^ *\\(-?[0-9]+\\)[^0-9]\\([^0-9]\\)")
-       (progn
-         (setq mark (wl-match-buffer 2))
-         (cond
-          ((or (string= mark wl-summary-new-mark)
-               (string= mark wl-summary-unread-uncached-mark)
-               (string= mark wl-summary-important-mark))
-           ;; noop
-           )
-          ((string= mark wl-summary-unread-cached-mark)
-           (setq new-mark wl-summary-unread-uncached-mark))
-          (t
-           (setq new-mark wl-summary-read-uncached-mark)))
-         (when new-mark
-           (setq number (string-to-int (wl-match-buffer 1)))
-           (delete-region (match-beginning 2) (match-end 2))
-           (goto-char (match-beginning 2))
-           (insert new-mark)
-           (elmo-file-cache-delete
-            (elmo-file-cache-get-path
-             (elmo-message-field wl-summary-buffer-elmo-folder
-                                 number
-                                 'message-id)))
-           (setq mark-alist
-                 (elmo-msgdb-mark-set mark-alist number new-mark))
-           (elmo-msgdb-set-mark-alist msgdb mark-alist)
-           (wl-summary-set-mark-modified)
-           (if wl-summary-highlight
-               (wl-highlight-summary-current-line nil nil t))
-           (set-buffer-modified-p nil)))))))
+      (setq mark (wl-summary-persistent-mark))
+      (cond
+       ((or (string= mark wl-summary-new-mark)
+           (string= mark wl-summary-unread-uncached-mark)
+           (string= mark wl-summary-important-mark))
+       ;; noop
+       )
+       ((string= mark wl-summary-unread-cached-mark)
+       (setq new-mark wl-summary-unread-uncached-mark))
+       (t
+       (setq new-mark wl-summary-read-uncached-mark)))
+      (when new-mark
+       (setq number (wl-summary-message-number))
+       (delete-backward-char 1)
+       (insert new-mark)
+       (elmo-file-cache-delete
+        (elmo-file-cache-get-path
+         (elmo-message-field wl-summary-buffer-elmo-folder
+                             number
+                             'message-id)))
+       (elmo-msgdb-set-mark msgdb number new-mark)
+       (wl-summary-set-mark-modified)
+       (if wl-summary-highlight
+           (wl-highlight-summary-current-line nil nil t))
+       (set-buffer-modified-p nil)))))
 
 (defun wl-summary-resume-cache-status ()
   "Resume the cache status of all messages in the current folder."
@@ -1696,7 +1750,6 @@ If ARG is non-nil, checking is omitted."
         (cur-buf (current-buffer))
         (msgdb (wl-summary-buffer-msgdb))
         (number-alist (elmo-msgdb-get-number-alist msgdb))
-        (mark-alist (elmo-msgdb-get-mark-alist msgdb))
         (inhibit-read-only t)
         (buffer-read-only nil)
         (case-fold-search nil)
@@ -1704,11 +1757,10 @@ If ARG is non-nil, checking is omitted."
     (message "Resuming cache status...")
     (save-excursion
       (goto-char (point-min))
-      (while (re-search-forward "^ *\\(-?[0-9]+\\)[^0-9]\\([^0-9]\\)" nil t)
-       (setq msg (string-to-int
-                  (wl-match-buffer 1)))
-       (setq mark (wl-match-buffer 2))
-       (setq msgid (cdr (assq msg number-alist)))
+      (while (not (eobp))
+       (setq msg (wl-summary-message-number))
+       (setq mark (wl-summary-persistent-mark))
+       (setq msgid (elmo-msgdb-get-field msgdb msg 'message-id))
        (setq set-mark nil)
        (if (elmo-file-cache-exists-p msgid)
            (if (or
@@ -1724,84 +1776,19 @@ If ARG is non-nil, checking is omitted."
                (setq set-mark wl-summary-unread-uncached-mark) ; !  -> U
              )))
        (when set-mark
-         (delete-region (match-beginning 2) (match-end 2))
+         (delete-backward-char 1)
          (insert set-mark)
-         (setq mark-alist
-               (elmo-msgdb-mark-set
-                mark-alist msg ; msgid
-                (if (string= set-mark " ") nil set-mark)))
+         (elmo-msgdb-set-mark msgdb msg
+                              (if (string= set-mark " ") nil set-mark))
          (if wl-summary-highlight
-             (wl-highlight-summary-current-line))))
+             (wl-highlight-summary-current-line)))
+       (forward-line 1))
       (wl-summary-set-mark-modified)
-      (set-buffer cur-buf); why is this needed???
-      (elmo-msgdb-set-mark-alist msgdb mark-alist)
-      (wl-summary-count-unread mark-alist)
+      (wl-summary-count-unread)
       (wl-summary-update-modeline)
       (message "Resuming cache status...done")
       (set-buffer-modified-p nil))))
 
-(defun wl-summary-resume-marks-and-highlight ()
-  (let* ((msgdb (wl-summary-buffer-msgdb))
-        (mark-alist (elmo-msgdb-get-mark-alist msgdb))
-;;;     (number-alist (elmo-msgdb-get-number-alist msgdb))
-        (count (count-lines (point-min)(point-max)))
-        (i 0)
-        msg-num percent smark)
-    (save-excursion
-      (goto-char (point-min))
-      (message "Resuming all marks...")
-      (while (not (eobp))
-       (setq msg-num (wl-summary-message-number))
-       (setq smark (car (cdr (assq msg-num mark-alist))))
-       (if (looking-at (format "^ *%s \\( \\)" msg-num))
-           (progn
-             (goto-char (match-end 1))
-             (delete-region (match-beginning 1) (match-end 1))
-             (insert (or smark " "))))
-       (wl-highlight-summary-current-line smark)
-       (when (> count elmo-display-progress-threshold)
-         (setq i (+ i 1))
-         (setq percent (/ (* i 100) count))
-         (elmo-display-progress
-          'wl-summary-resume-marks-and-highlight "Resuming all marks..."
-          percent))
-       (forward-line 1)))
-    (message "Resuming all marks...done")))
-
-(defun wl-summary-resume-marks ()
-  (let* ((msgdb (wl-summary-buffer-msgdb))
-        (mark-alist (elmo-msgdb-get-mark-alist msgdb))
-        (number-alist (elmo-msgdb-get-number-alist msgdb))
-        (count (length mark-alist))
-        (i 0)
-        entity msg-num percent)
-    (save-excursion
-      (message "Resuming all marks...")
-      (while mark-alist
-       (setq entity (car mark-alist))
-       (if (setq msg-num (car (rassoc (car entity) number-alist)))
-           (progn
-;;;          (goto-char (point-min))
-             (if (re-search-forward (format "^ *%s \\( \\)" msg-num) nil t)
-                 (progn
-                   (delete-region (match-beginning 1) (match-end 1))
-                   (insert (or (cadr entity)
-                               " ")))
-               (if (re-search-backward (format "^ *%s \\( \\)" msg-num) nil t)
-                   (progn
-                     (goto-char (match-end 1))
-                     (delete-region (match-beginning 1) (match-end 1))
-                     (insert (or (cadr entity)
-                                 " ")))))))
-       (when (> count elmo-display-progress-threshold)
-         (setq i (+ i 1))
-         (setq percent (/ (* i 100) count))
-         (elmo-display-progress
-          'wl-summary-resume-marks "Resuming all marks..."
-          percent))
-       (setq mark-alist (cdr mark-alist)))
-      (message "Resuming all marks...done"))))
-
 (defun wl-summary-delete-messages-on-buffer (msgs &optional deleting-info)
   (interactive)
   (save-excursion
@@ -1821,10 +1808,9 @@ If ARG is non-nil, checking is omitted."
                            (wl-thread-delete-message (car msgs))))
              (setq update-list (delq (car msgs) update-list)))
          (goto-char (point-min))
-         (if (re-search-forward (format "^ *%d[^0-9]\\([^0-9]\\).*$"
-                                        (car msgs)) nil t)
+         (if (wl-summary-jump-to-msg (car msgs))
              (progn
-               (delete-region (match-beginning 0) (match-end 0))
+               (delete-region (point-at-bol) (point-at-eol))
                (delete-char 1) ; delete '\n'
                (setq wl-summary-buffer-number-list
                      (delq (car msgs) wl-summary-buffer-number-list)))))
@@ -1840,61 +1826,26 @@ If ARG is non-nil, checking is omitted."
        (wl-thread-update-line-msgs (elmo-uniq-list update-list)
                                    (unless deleting-info 'no-msg))
        (wl-thread-cleanup-symbols msgs2))
-      (wl-summary-count-unread
-       (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+      (wl-summary-count-unread)
       (wl-summary-update-modeline)
       (wl-folder-update-unread
        (wl-summary-buffer-folder-name)
        (+ wl-summary-buffer-unread-count wl-summary-buffer-new-count)))))
 
-(defun wl-summary-set-as-read-mark-alist (mark-alist)
-  (let ((marks (list (cons wl-summary-unread-cached-mark
-                          nil)
-                    (cons wl-summary-unread-uncached-mark
-                          wl-summary-read-uncached-mark)
-                    (cons wl-summary-new-mark
-                          wl-summary-read-uncached-mark)))
-       (ret-val mark-alist)
-       entity pair)
-    (while mark-alist
-      (setq entity (car mark-alist))
-      (when (setq pair (assoc (cadr entity) marks))
-       (if (elmo-message-use-cache-p wl-summary-buffer-elmo-folder
-                                     (caar mark-alist))
-           (if (cdr pair)
-               (setcar (cdr entity) (cdr pair))
-             (setq ret-val (delete entity ret-val)))
-         (setq ret-val (delete entity ret-val))))
-      (setq mark-alist (cdr mark-alist)))
-    ret-val))
-
-(defun wl-summary-set-status-marks (mark-alist before after)
-  "Set the BEFORE marks to AFTER."
-  (let ((ret-val mark-alist)
-       entity)
-    (while mark-alist
-      (setq entity (car mark-alist))
-      (when (string= (cadr entity) before)
-       (if after
-           (setcar (cdr entity) after)
-         (setq ret-val (delete entity ret-val))))
-      (setq mark-alist (cdr mark-alist)))
-    ret-val))
-
-(defun wl-summary-set-status-marks-on-buffer (before after)
-  "Set the MARKS marks on buffer."
+(defun wl-summary-replace-status-marks (before after)
+  "Replace the status marks on buffer."
   (interactive)
   (save-excursion
     (goto-char (point-min))
     (let ((inhibit-read-only t)
-         (buffer-read-only nil)
-         (regexp (concat "^" wl-summary-buffer-number-regexp ".\\(\\%s\\)")))
-      (while (re-search-forward
-             (format regexp (regexp-quote before)) nil t)
-       (delete-region (match-beginning 1) (match-end 1))
-       (insert after)
-       (if wl-summary-highlight
-           (wl-highlight-summary-current-line))))))
+         (buffer-read-only nil))
+      (while (not (eobp))
+       (when (string= (wl-summary-persistent-mark) before)
+         (delete-backward-char 1)
+         (insert after)
+         (if wl-summary-highlight
+             (wl-highlight-summary-current-line)))
+       (forward-line 1)))))
 
 (defun wl-summary-get-delete-folder (folder)
   (if (string= folder wl-trash-folder)
@@ -1906,58 +1857,38 @@ If ARG is non-nil, checking is omitted."
            ((or (equal type 'remove) (equal type 'null))
             'null)
            (t;; (equal type 'trash)
-            wl-trash-folder)))))
-
-(defun wl-summary-delete-important-msgs-from-list (delete-list
-                                                  mark-alist)
-  (let ((dlist delete-list))
-    (while dlist
-      (if (string= wl-summary-important-mark
-                  (car (cdr (assq (car dlist) mark-alist))))
-         (setq delete-list (delete (car dlist) delete-list)))
-      (setq dlist (cdr dlist)))
-    delete-list))
-
-(defun wl-summary-delete-canceled-msgs-from-list (delete-list msgdb)
-  (let ((dlist delete-list))
-    (while dlist
-      (if (null (cdr (assq (car dlist) (cadr msgdb))))
-         (setq delete-list (delete (car dlist) delete-list)))
-      (setq dlist (cdr dlist)))
-    delete-list))
+            (let ((trash-folder (wl-folder-get-elmo-folder wl-trash-folder)))
+              (unless (elmo-folder-exists-p trash-folder)
+                (if (y-or-n-p
+                     (format "Trash Folder %s does not exist, create it? "
+                             wl-trash-folder))
+                    (elmo-folder-create trash-folder)
+                  (error "Trash Folder is not created"))))
+              wl-trash-folder)))))
 
 (defun wl-summary-get-append-message-func ()
   (if (eq wl-summary-buffer-view 'thread)
       'wl-summary-insert-thread-entity
-;;;   'wl-summary-insert-thread
-    'wl-summary-insert-summary))
+    'wl-summary-insert-sequential))
 
 (defun wl-summary-sort ()
   (interactive)
-  (let ((sort-by (let ((input-range-list '("number" "date" "subject" "from"))
-                      (default "date")
-                      in)
-                  (setq in
-                        (completing-read
-                         (format "Sort by (%s): " default)
-                         (mapcar
-                          (function (lambda (x) (cons x x)))
-                          input-range-list)))
-                  (if (string= in "")
-                      default
-                    in))))
-    (if (not (member sort-by '("number" "date" "subject" "from")))
-       (error "Sort by %s is not implemented"  sort-by))
-    (wl-summary-rescan sort-by)))
+  (wl-summary-rescan
+   (completing-read
+    (format "Sort by (%s): " (symbol-name wl-summary-default-sort-spec))
+    (mapcar (lambda (spec)
+             (list (symbol-name spec)))
+           wl-summary-sort-specs)
+    nil t nil nil (symbol-name wl-summary-default-sort-spec))))
 
 (defun wl-summary-sync-marks ()
   "Update marks in summary."
   (interactive)
   (let ((last-progress 0)
        (i 0)
-       mark-alist unread-marks importants unreads
+       unread-marks importants unreads
        importants-in-db unreads-in-db diff diffs
-       mes num-ma progress)
+       mes progress)
     ;; synchronize marks.
     (when (not (eq (elmo-folder-type-internal
                    wl-summary-buffer-elmo-folder)
@@ -1966,31 +1897,18 @@ If ARG is non-nil, checking is omitted."
       (setq unread-marks (list wl-summary-unread-cached-mark
                               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)
+           importants-in-db (elmo-folder-list-messages-mark-match
+                             wl-summary-buffer-elmo-folder
+                             (regexp-quote wl-summary-important-mark))
+           unreads-in-db (elmo-folder-list-messages-mark-match
+                          wl-summary-buffer-elmo-folder
+                          (wl-regexp-opt unread-marks))
            importants (elmo-folder-list-importants
                        wl-summary-buffer-elmo-folder
                        wl-summary-important-mark)
            unreads (elmo-folder-list-unreads
                     wl-summary-buffer-elmo-folder
                     unread-marks))
-      (while mark-alist
-       (if (string= (cadr (car mark-alist))
-                    wl-summary-important-mark)
-           (setq importants-in-db (cons (car (car mark-alist))
-                                        importants-in-db))
-         (if (member (cadr (car mark-alist)) unread-marks)
-             (setq unreads-in-db (cons (car (car mark-alist))
-                                       unreads-in-db))))
-       (setq mark-alist (cdr mark-alist))
-       (when (> num-ma elmo-display-progress-threshold)
-         (setq i (1+ i)
-               progress (/ (* i 100) num-ma))
-         (if (not (eq progress last-progress))
-             (elmo-display-progress 'wl-summary-sync-marks
-                                    "Updating marks..."
-                                    progress))
-         (setq last-progress progress)))
       (setq diff (elmo-list-diff importants importants-in-db))
       (setq diffs (cadr diff)) ; important-deletes
       (setq mes (format "Updated (-%d" (length diffs)))
@@ -2008,7 +1926,7 @@ If ARG is non-nil, checking is omitted."
       (setq diffs (cadr diff))
       (setq mes (concat mes (format "(-%d" (length diffs))))
       (while diffs
-       (wl-summary-mark-as-read t 'no-server nil (car diffs))
+       (wl-summary-mark-as-read (car diffs) 'no-folder)
        (setq diffs (cdr diffs)))
       (setq diffs (car diff)) ; unread-appends
       (setq mes (concat mes (format "/+%d) unread mark(s)." (length diffs))))
@@ -2017,27 +1935,6 @@ 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 (and wl-summary-update-confirm-threshold
-            (> 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)
@@ -2046,13 +1943,12 @@ 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
         curp num i new-msgdb
         append-list delete-list crossed
         update-thread update-top-list
-        expunged mes sync-result)
+        expunged mes sync-result entity)
     (unwind-protect
        (progn
          (unless wl-summary-buffer-elmo-folder
@@ -2064,7 +1960,7 @@ If ARG is non-nil, checking is omitted."
          ;;(setq seen-list
          ;;(wl-summary-flush-pending-append-operations seen-list))
          (goto-char (point-max))
-         (wl-folder-confirm-existence folder 'force)
+         (wl-folder-confirm-existence folder (elmo-folder-plugged-p folder))
          (setq sync-result (elmo-folder-synchronize
                             folder
                             wl-summary-new-mark
@@ -2091,7 +1987,7 @@ If ARG is non-nil, checking is omitted."
                  (wl-summary-delete-messages-on-buffer delete-list "Deleting...")
                  (message "Deleting...done"))
                (when new-msgdb
-                 (wl-summary-set-status-marks-on-buffer
+                 (wl-summary-replace-status-marks
                   wl-summary-new-mark
                   wl-summary-unread-uncached-mark))
                (setq append-list (elmo-msgdb-get-overview new-msgdb))
@@ -2099,20 +1995,20 @@ If ARG is non-nil, checking is omitted."
                (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
+                                entity (elmo-folder-msgdb folder)
                                 (not sync-all)))
                      (wl-append update-top-list update-thread))
                    (if elmo-use-database
@@ -2135,7 +2031,8 @@ If ARG is non-nil, checking is omitted."
                      (when (setq update-thread
                                  (wl-summary-append-message-func-internal
                                   (cdar wl-summary-delayed-update)
-                                  overview mark-alist (not sync-all) t))
+                                  (elmo-folder-msgdb folder)
+                                  (not sync-all) t))
                        (wl-append update-top-list update-thread))
                      (setq wl-summary-delayed-update
                            (cdr wl-summary-delayed-update))))
@@ -2151,7 +2048,6 @@ If ARG is non-nil, checking is omitted."
                (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
@@ -2192,12 +2088,10 @@ If ARG is non-nil, checking is omitted."
       (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)))
+            (let ((pair (wl-summary-count-unread)))
+              (+ (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))
@@ -2225,18 +2119,16 @@ If ARG is non-nil, checking is omitted."
          (buffer-read-only nil)
          msg-num
          cur-mark)
-      (when (looking-at "^ *\\(-?[0-9]+\\)\\([^0-9]\\)")
-       (setq msg-num  (string-to-int (wl-match-buffer 1)))
-       (setq cur-mark (wl-match-buffer 2))
-       (when (member cur-mark (list " "
-                                    wl-summary-score-below-mark
-                                    wl-summary-score-over-mark))
-         (goto-char (match-end 1))
-         (delete-region (match-beginning 2) (match-end 2))
-         (insert mark)
-         (if wl-summary-highlight
-             (wl-highlight-summary-current-line nil nil t))
-         (set-buffer-modified-p nil))))))
+      (setq msg-num (wl-summary-message-number))
+      (setq cur-mark (wl-summary-temp-mark))
+      (when (member cur-mark (list " "
+                                  wl-summary-score-below-mark
+                                  wl-summary-score-over-mark))
+       (delete-backward-char 1)
+       (insert mark)
+       (if wl-summary-highlight
+           (wl-highlight-summary-current-line nil nil t))
+       (set-buffer-modified-p nil)))))
 
 (defun wl-summary-get-score-mark (msg-num)
   (let ((score (cdr (assq msg-num wl-summary-scored))))
@@ -2247,23 +2139,19 @@ If ARG is non-nil, checking is omitted."
               "+")))))
 
 (defun wl-summary-update-modeline ()
-  (setq wl-summary-buffer-unread-status
-       (format " {%s}(%d new/%d unread)"
-               (if (eq wl-summary-buffer-view 'thread)
-                   "T" "S")
-               wl-summary-buffer-new-count
-               (+ wl-summary-buffer-new-count
-                  wl-summary-buffer-unread-count))))
-
-(defsubst wl-summary-jump-to-msg (&optional number)
+  (setq wl-summary-buffer-mode-line
+       (funcall wl-summary-buffer-mode-line-formatter)))
+
+(defun wl-summary-jump-to-msg (&optional number)
   (interactive)
   (let ((num (or number
                 (string-to-int
                  (read-from-minibuffer "Jump to Message(No.): ")))))
     (setq num (int-to-string num))
     (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))
+    (if (or (and (re-search-forward (concat "\r" num "[^0-9]") nil t)
+                (progn (backward-char 1) t))
+           (re-search-backward (concat "\r" num "[^0-9]") nil t))
        (progn (beginning-of-line) t)
       nil)))
 
@@ -2288,19 +2176,11 @@ If ARG is non-nil, checking is omitted."
 (defun wl-summary-message-number ()
   (save-excursion
     (beginning-of-line)
-    (if (looking-at "^ *\\(-?[0-9]+\\)")
+    (if (or (re-search-forward "\r\\(-?[0-9]+\\)" (point-at-eol) t)
+           (re-search-forward "^ *\\(-?[0-9]+\\)" (point-at-eol) t))
        (string-to-int (wl-match-buffer 1))
       nil)))
 
-(defun wl-summary-move (src dsts-msgs)
-  (let* ((dsts (car dsts-msgs))                ; (+foo +bar)
-;;;     (msgs (cdr dsts-msgs))         ; (1 2 3)
-;;;     (msgdb (wl-summary-buffer-msgdb))
-;;;     result)
-        )
-    (while dsts
-      (setq dsts (cdr dsts)))))
-
 (defun wl-summary-delete-all-msgs ()
   (interactive)
   (let ((cur-buf (current-buffer))
@@ -2371,7 +2251,11 @@ If ARG, without confirm."
 
 (defun wl-summary-goto-folder (&optional arg)
   (interactive "P")
-  (wl-summary-goto-folder-subr nil nil nil arg t))
+  (wl-summary-goto-folder-subr nil nil nil nil t nil arg))
+
+(defun wl-summary-goto-folder-sticky ()
+  (interactive)
+  (wl-summary-goto-folder-subr nil nil nil t t))
 
 (defun wl-summary-goto-last-visited-folder ()
   (interactive)
@@ -2423,13 +2307,15 @@ If ARG, without confirm."
                   wl-summary-buffer-target-mark-list
                   wl-summary-buffer-elmo-folder
                   wl-summary-buffer-number-column
-                  wl-summary-buffer-number-regexp
+                  wl-summary-buffer-temp-mark-column
+                  wl-summary-buffer-persistent-mark-column
                   wl-summary-buffer-message-modified
                   wl-summary-buffer-mark-modified
                   wl-summary-buffer-thread-modified
                   wl-summary-buffer-number-list
                   wl-summary-buffer-msgdb
-                  wl-summary-buffer-folder-name)
+                  wl-summary-buffer-folder-name
+                  wl-summary-buffer-line-formatter)
                 (and (eq wl-summary-buffer-view 'thread)
                      '(wl-thread-entity-hashtb
                        wl-thread-entities
@@ -2458,8 +2344,7 @@ If ARG, without confirm."
       (setq copy-variables (cdr copy-variables)))
     (switch-to-buffer buf)
     (kill-buffer cur-buf)
-    (wl-summary-count-unread
-     (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+    (wl-summary-count-unread)
     (wl-summary-update-modeline)
     (if msg
        (if (eq wl-summary-buffer-view 'thread)
@@ -2489,21 +2374,24 @@ If ARG, without confirm."
 (defun wl-summary-auto-select-msg-p (unread-msg)
   (and unread-msg
        (not (string=
-            (cadr (assoc unread-msg
-                         (elmo-msgdb-get-mark-alist
-                          (wl-summary-buffer-msgdb))))
+            (elmo-msgdb-get-mark
+             (wl-summary-buffer-msgdb)
+             unread-msg)
             wl-summary-important-mark))))
 
 (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)
+                                             sticky interactive scoring
+                                             force-exit)
   "Display target folder on summary."
   (interactive)
   (let* ((keep-cursor (memq this-command
@@ -2516,15 +2404,17 @@ 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.
-      (elmo-folder-commit wl-summary-buffer-elmo-folder))
+      (if (or force-exit (not (wl-summary-sticky-p)))
+         (wl-summary-cleanup-temp-marks (wl-summary-sticky-p)))
+      (wl-summary-save-view)
+      (elmo-folder-commit wl-summary-buffer-elmo-folder)
+      (if (and (wl-summary-sticky-p) force-exit)
+         (kill-buffer (current-buffer))))
     (setq buf (wl-summary-get-buffer-create (elmo-folder-name-internal folder)
                                            sticky))
     (setq reuse-buf
@@ -2561,7 +2451,7 @@ If ARG, without confirm."
                     default-enable-multibyte-characters)
                    (decode-mime-charset-region
                     (point-min)(point-max)
-                    wl-summary-buffer-mime-charset))
+                    wl-summary-buffer-mime-charset 'LF))
                  (when (file-exists-p view)
                    (setq wl-summary-buffer-view
                          (wl-summary-load-file-object view)))
@@ -2573,12 +2463,15 @@ If ARG, without confirm."
                                       (elmo-folder-msgdb-path folder))))
              (wl-summary-open-folder folder)
              (wl-summary-rescan))
-           (wl-summary-count-unread
-            (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+           (wl-summary-count-unread)
            (wl-summary-update-modeline)))
       (unless (eq wl-summary-buffer-view 'thread)
        (wl-summary-make-number-list))
-      (wl-summary-buffer-number-column-detect t)
+      (when (and wl-summary-cache-use
+                (or (and wl-summary-check-line-format
+                         (wl-summary-line-format-changed-p))
+                    (wl-summary-view-old-p)))
+       (wl-summary-rescan))
       (wl-summary-toggle-disp-msg (if wl-summary-buffer-disp-msg 'on 'off))
       (unless (and reuse-buf keep-cursor)
        ;(setq hilit wl-summary-highlight)
@@ -2618,6 +2511,11 @@ 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))))
@@ -2643,6 +2541,13 @@ 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))))))
@@ -2656,31 +2561,18 @@ If ARG, without confirm."
        ;; entity-id is unknown.
        (wl-folder-set-current-entity-id
         (wl-folder-get-entity-id entity)))
+    (when (and wl-summary-lazy-highlight
+              wl-on-xemacs)
+      (sit-for 0))
     (unwind-protect
        (run-hooks 'wl-summary-prepared-hook)
       (set-buffer-modified-p nil))
     retval))
 
-(defun wl-summary-summary-line-already-exists-p (parent-number buffer)
-  "Return the depth."
-  (set-buffer buffer)
-  (goto-char (point-max))
-  (let ((depth 0))
-    (when (re-search-backward (format "^ *%s..../..\(.*\)..:.. "
-                                     parent-number) nil t)
-      (goto-char (match-end 0))
-      (while (string-match wl-thread-indent-regexp
-                          (char-to-string
-                           (char-after (point))))
-       (setq depth (+ 1 depth))
-       (forward-char))
-      (/ depth wl-thread-indent-level-internal))))
-
-(defun wl-summary-goto-bottom-of-current-thread ()
-  (if (re-search-forward (concat "^" wl-summary-buffer-number-regexp
-                                "..../..\(.*\)..:.. [[<]") nil t)
-      ()
-    (goto-char (point-max))))
+(defun wl-summary-goto-previous-message-beginning ()
+  (end-of-line)
+  (re-search-backward "\r\\(-?[0-9]+\\)" nil t)
+  (beginning-of-line))
 
 (defun wl-summary-goto-top-of-current-thread ()
   (wl-summary-jump-to-msg
@@ -2714,22 +2606,19 @@ If ARG, without confirm."
        (save-excursion (beginning-of-line)(point))
        (save-excursion (end-of-line)(point))
        'mouse-face nil))
-  (condition-case nil ; it's dangerous, so ignore error.
-      (run-hooks 'wl-summary-line-inserted-hook)
-    (error (ding)
-          (message "Error in wl-summary-line-inserted-hook"))))
-
-(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))
-    (when (setq summary-line
-               (wl-summary-overview-create-summary-line
-                msg entity nil 0 mark-alist))
-      (let ((inhibit-read-only t)
-           buffer-read-only)
-       (goto-char (point-max))
-       (wl-summary-insert-line summary-line)))))
+  (ignore-errors
+    (run-hooks 'wl-summary-line-inserted-hook)))
+
+(defun wl-summary-insert-sequential (entity msgdb &rest args)
+  (let ((inhibit-read-only t)
+       buffer-read-only)
+    (goto-char (point-max))
+    (wl-summary-insert-line
+     (wl-summary-create-line entity nil nil
+                            (elmo-msgdb-get-mark
+                             msgdb
+                             (elmo-msgdb-overview-entity-get-number
+                              entity))))))
 
 (defun wl-summary-default-subject-filter (subject)
   (let ((case-fold-search t))
@@ -2738,8 +2627,8 @@ If ARG, without confirm."
     (elmo-replace-in-string subject "^\\[.*\\]" "")))
 
 (defun wl-summary-subject-equal (subject1 subject2)
-  (string= (wl-summary-subject-filter-func-internal subject1)
-          (wl-summary-subject-filter-func-internal subject2)))
+  (string= (funcall wl-summary-subject-filter-function subject1)
+          (funcall wl-summary-subject-filter-function subject2)))
 
 (defmacro wl-summary-put-alike (alike)
   (` (elmo-set-hash-val (format "#%d" (wl-count-lines))
@@ -2751,6 +2640,7 @@ If ARG, without confirm."
                        wl-summary-alike-hashtb)))
 
 (defun wl-summary-insert-headers (overview func mime-decode)
+  (message "Creating subject cache...")
   (let (ov this last alike)
     (buffer-disable-undo (current-buffer))
     (make-local-variable 'wl-summary-alike-hashtb)
@@ -2775,6 +2665,7 @@ If ARG, without confirm."
                                  elmo-mime-charset)
       (when (eq mime-decode 'mime)
        (eword-decode-region (point-min) (point-max))))
+    (message "Creating subject cache...done")
     (run-hooks 'wl-summary-insert-headers-hook)))
 
 (defun wl-summary-search-by-subject (entity overview)
@@ -2791,11 +2682,11 @@ If ARG, without confirm."
           overview
           (function
            (lambda (x)
-             (wl-summary-subject-filter-func-internal
+             (funcall wl-summary-subject-filter-function
               (elmo-msgdb-overview-entity-get-subject-no-decode x))))
           t))
-       (setq match (wl-summary-subject-filter-func-internal
-                    (elmo-msgdb-overview-entity-get-subject entity)))
+       (setq match (funcall wl-summary-subject-filter-function
+                            (elmo-msgdb-overview-entity-get-subject entity)))
        (if (string= match "")
            (setq match "\n"))
        (goto-char (point-min))
@@ -2823,95 +2714,103 @@ If ARG, without confirm."
        (if founds
            (car founds))))))
 
-(defun wl-summary-insert-thread-entity (entity overview mark-alist update
+(defun wl-summary-insert-thread-entity (entity msgdb update
                                               &optional force-insert)
-  (let (update-list entity-stack)
+  (let* ((overview (elmo-msgdb-get-overview msgdb))
+        this-id
+        parent-entity
+        parent-number
+        (case-fold-search t)
+        cur number overview2 cur-entity linked retval delayed-entity
+        update-list entity-stack)
     (while entity
-      (let* ((this-id (elmo-msgdb-overview-entity-get-id entity))
-            (parent-entity
-             (elmo-msgdb-overview-get-parent-entity entity overview));; temp
-;;;         (parent-id (elmo-msgdb-overview-entity-get-id parent-entity))
-            (parent-number (elmo-msgdb-overview-entity-get-number parent-entity))
-            (case-fold-search t)
-            msg overview2 cur-entity linked retval delayed-entity)
-       (setq msg (elmo-msgdb-overview-entity-get-number entity))
+      (setq this-id (elmo-msgdb-overview-entity-get-id entity)
+           parent-entity
+           (elmo-msgdb-get-parent-entity entity msgdb)
+           parent-number (elmo-msgdb-overview-entity-get-number
+                          parent-entity))
+      (setq number (elmo-msgdb-overview-entity-get-number entity))
+      ;; If thread loop detected, set parent as nil.
+      (setq cur entity)
+      (while cur
+       (if (eq number (elmo-msgdb-overview-entity-get-number
+                       (setq cur
+                             (elmo-msgdb-get-parent-entity cur msgdb))))
+           (setq parent-number nil
+                 cur nil)))
+      (if (and parent-number
+              (not (wl-thread-get-entity parent-number))
+              (not force-insert))
+         ;; parent exists in overview, but not in wl-thread-entities
+         (progn
+           (wl-append wl-summary-delayed-update
+                      (list (cons parent-number entity)))
+           (setq entity nil)) ;; exit loop
+       ;; Search parent by subject.
+       (when (and (null parent-number)
+                  wl-summary-search-parent-by-subject-regexp
+                  (string-match
+                   wl-summary-search-parent-by-subject-regexp
+                   (elmo-msgdb-overview-entity-get-subject entity)))
+         (let ((found (wl-summary-search-by-subject entity overview)))
+           (when (and found
+                      (not (member found wl-summary-delayed-update)))
+             (setq parent-entity found)
+             (setq parent-number
+                   (elmo-msgdb-overview-entity-get-number parent-entity))
+             (setq linked t))))
+       ;; If subject is change, divide thread.
        (if (and parent-number
-                (not (wl-thread-get-entity parent-number))
-                (not force-insert))
-           ;; parent is exists in overview, but not exists in wl-thread-entities
-           (progn
-             (wl-append wl-summary-delayed-update
-                        (list (cons parent-number entity)))
-             (setq entity nil)) ;; exit loop
-         ;; Search parent by subject.
-         (when (and (null parent-number)
-                    wl-summary-search-parent-by-subject-regexp
-                    (string-match
-                     wl-summary-search-parent-by-subject-regexp
-                     (elmo-msgdb-overview-entity-get-subject entity)))
-           (let ((found (wl-summary-search-by-subject entity overview)))
-             (when (and found
-                        (not (member found wl-summary-delayed-update)))
-               (setq parent-entity found)
-               (setq parent-number
-                     (elmo-msgdb-overview-entity-get-number parent-entity))
-               (setq linked t))))
-         ;; If subject is change, divide thread.
-         (if (and parent-number
-                  wl-summary-divide-thread-when-subject-changed
-                  (not (wl-summary-subject-equal
-                        (or (elmo-msgdb-overview-entity-get-subject
-                             entity) "")
-                        (or (elmo-msgdb-overview-entity-get-subject
-                             parent-entity) ""))))
-             (setq parent-number nil))
-         ;;
-         (setq retval
-               (wl-thread-insert-message entity overview mark-alist
-                                         msg parent-number update linked))
-         (and retval
-              (wl-append update-list (list retval)))
-         (setq entity nil) ; exit loop
-         (while (setq delayed-entity (assq msg wl-summary-delayed-update))
-           (setq wl-summary-delayed-update
-                 (delete delayed-entity wl-summary-delayed-update))
-           ;; update delayed message
-           (wl-append entity-stack (list (cdr delayed-entity)))))
-       (if (and (not entity)
-                entity-stack)
-           (setq entity (pop entity-stack)))))
+                wl-summary-divide-thread-when-subject-changed
+                (not (wl-summary-subject-equal
+                      (or (elmo-msgdb-overview-entity-get-subject
+                           entity) "")
+                      (or (elmo-msgdb-overview-entity-get-subject
+                           parent-entity) ""))))
+           (setq parent-number nil))
+       (setq retval
+             (wl-thread-insert-message entity
+                                       number parent-number update linked))
+       (and retval
+            (wl-append update-list (list retval)))
+       (setq entity nil) ; exit loop
+       (while (setq delayed-entity (assq number wl-summary-delayed-update))
+         (setq wl-summary-delayed-update
+               (delq delayed-entity wl-summary-delayed-update))
+         ;; update delayed message
+         (wl-append entity-stack (list (cdr delayed-entity)))))
+      (if (and (not entity)
+              entity-stack)
+         (setq entity (pop entity-stack))))
     update-list))
 
 (defun wl-summary-update-thread (entity
-                                overview
-                                mark-alist
                                 thr-entity
                                 parent-entity)
-  (let* ((depth 0)
-        (this-id (elmo-msgdb-overview-entity-get-id entity))
+  (let* ((this-id (elmo-msgdb-overview-entity-get-id entity))
         (overview-entity entity)
         (parent-id (elmo-msgdb-overview-entity-get-id parent-entity))
-        (parent-number (elmo-msgdb-overview-entity-get-number parent-entity))
-        summary-line msg subject-differ)
+        (number (elmo-msgdb-overview-entity-get-number entity))
+        (parent-number (elmo-msgdb-overview-entity-get-number parent-entity)))
     (cond
      ((or (not parent-id)
          (string= this-id parent-id))
       (goto-char (point-max))
       (beginning-of-line))
      ;; parent already exists in buffer.
-     ((setq depth (or (wl-summary-summary-line-already-exists-p
-                      parent-number (current-buffer)) -1))
-      (setq depth (+ 1 depth))
+     ((wl-summary-jump-to-msg parent-number)
       (wl-thread-goto-bottom-of-sub-thread)))
-    (if (and (setq msg (elmo-msgdb-overview-entity-get-number entity)))
-       (if (setq summary-line
-                 (wl-summary-overview-create-summary-line
-                  msg entity parent-entity depth mark-alist
-                  (wl-thread-maybe-get-children-num msg)
-                  nil thr-entity))
-           (let ((inhibit-read-only t)
-                 (buffer-read-only nil))
-             (wl-summary-insert-line summary-line))))))
+    (let ((inhibit-read-only t)
+         (buffer-read-only nil))
+      (wl-summary-insert-line
+       (wl-summary-create-line
+       entity
+       parent-entity
+       nil
+       (elmo-msgdb-get-mark (wl-summary-buffer-msgdb) number)
+       (wl-thread-maybe-get-children-num number)
+       (wl-thread-make-indent-string thr-entity)
+       (wl-thread-entity-get-linked thr-entity))))))
 
 (defun wl-summary-mark-as-unread (&optional number
                                            no-server-update
@@ -2923,13 +2822,12 @@ If ARG, without confirm."
          (buffer-read-only nil)
          (folder wl-summary-buffer-elmo-folder)
          (msgdb (wl-summary-buffer-msgdb))
-         (mark-alist (elmo-msgdb-get-mark-alist msgdb))
 ;;;      (number-alist (elmo-msgdb-get-number-alist msgdb))
-         new-mark visible mark)
+         new-mark visible mark cur-mark)
       (if number
          (progn
            (setq visible (wl-summary-jump-to-msg number))
-           (unless (setq mark (cadr (assq number mark-alist)))
+           (unless (setq mark (elmo-msgdb-get-mark msgdb number))
              (setq mark " ")))
        ;; interactive
        (setq visible t))
@@ -2938,22 +2836,18 @@ If ARG, without confirm."
            (message "No message.")
          (end-of-line)
          (setq eol (point))
-         (re-search-backward (concat "^" wl-summary-buffer-number-regexp
-                                     "..../..")) ; set cursor line
-         (beginning-of-line)))
+         (wl-summary-goto-previous-message-beginning)))
       (if (or (and (not visible)
                   ;; already exists in msgdb.
-                  (assq number (elmo-msgdb-get-number-alist msgdb)))
-             (re-search-forward
-              (format (concat "^ *\\("
-                              (if number (int-to-string number)
-                                "-?[0-9]+")
-                              "\\)[^0-9]\\(%s\\|%s\\)")
-                      wl-summary-read-uncached-mark
-                      " ") eol t))
+                  (elmo-msgdb-overview-get-entity number msgdb))
+             (progn
+               ;; visible.
+               (setq cur-mark (wl-summary-persistent-mark))
+               (or (string= cur-mark " ")
+                   (string= cur-mark wl-summary-read-uncached-mark))))
          (progn
-           (setq number (or number (string-to-int (wl-match-buffer 1))))
-           (setq mark (or mark (elmo-match-buffer 2)))
+           (setq number (or number (wl-summary-message-number)))
+           (setq mark (or mark cur-mark))
            (save-match-data
              (setq new-mark (if (string= mark
                                          wl-summary-read-uncached-mark)
@@ -2967,13 +2861,9 @@ If ARG, without confirm."
                (unless (elmo-folder-unmark-read folder (list number))
                  (error "Setting mark failed"))))
            (when visible
-             (delete-region (match-beginning 2) (match-end 2))
+             (delete-backward-char 1)
              (insert new-mark))
-           (setq mark-alist
-                 (elmo-msgdb-mark-set mark-alist
-                                      number
-                                      new-mark))
-           (elmo-msgdb-set-mark-alist msgdb mark-alist)
+           (elmo-msgdb-set-mark msgdb number new-mark)
            (unless no-modeline-update
              (setq wl-summary-buffer-unread-count
                    (+ 1 wl-summary-buffer-unread-count))
@@ -2988,7 +2878,7 @@ If ARG, without confirm."
   (set-buffer-modified-p nil))
 
 (defun wl-summary-delete (&optional number)
-  "Mark Delete mark 'D'.
+  "Mark a delete mark 'D'.
 If optional argument NUMBER is specified, mark message specified by NUMBER."
   (interactive)
   (let* ((buffer-num (wl-summary-message-number))
@@ -3024,7 +2914,8 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
          sol eol rs re)
       (beginning-of-line)
       (setq sol (point))
-      (end-of-line)
+      (search-forward "\r")
+      (forward-char -1)
       (setq eol (point))
       (setq rs (next-single-property-change sol 'wl-summary-destination
                                            buf eol))
@@ -3072,12 +2963,10 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                        (wl-append msglist result)))
                  (forward-line 1)))
              (elmo-uniq-list msglist))
-         (let* ((case-fold-search nil)
-                (re (format (concat wl-summary-message-regexp "%s")
-                            (regexp-quote mark))))
-           (while (re-search-forward re nil t)
+         (while (not (eobp))
+           (when (string= (wl-summary-temp-mark) mark)
              (setq msglist (cons (wl-summary-message-number) msglist)))
-           (nreverse msglist)))))))
+           (forward-line 1)))))))
 
 (defun wl-summary-exec ()
   (interactive)
@@ -3224,7 +3113,14 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
              (or wl-folder-completion-function
                  (if (memq 'read-folder wl-use-folder-petname)
                      (wl-folder-get-entity-with-petname)
-                   wl-folder-entity-hashtb))
+                   (let (alist)
+                     (mapatoms 
+                      (lambda (atom)
+                        (setq alist
+                              (cons (list (elmo-string
+                                           (symbol-name atom))) alist)))
+                      wl-folder-entity-hashtb)
+                     alist)))
              nil nil (or init wl-default-spec)
              'wl-read-folder-hist)))
     (if (or (string= fld wl-default-spec)
@@ -3253,7 +3149,10 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
        len rs re c)
     (setq len (string-width folder))
     (if (< len 1) ()
-      (end-of-line)
+      ;;(end-of-line)
+      (beginning-of-line)
+      (search-forward "\r")
+      (forward-char -1)
       (setq re (point))
       (setq c 0)
       (while (< c len)
@@ -3306,7 +3205,6 @@ 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
@@ -3351,7 +3249,8 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
            (message "Force refile to %s." folder)))
       (if (string= folder (wl-summary-buffer-folder-name))
          (error "Same folder"))
-      (if (or (string= folder wl-queue-folder)
+      (if (or (not (elmo-folder-writable-p (wl-folder-get-elmo-folder folder)))
+             (string= folder wl-queue-folder)
              (string= folder wl-draft-folder))
          (error "Don't %s messages to %s" copy-or-refile folder))
       ;; learn for refile.
@@ -3393,8 +3292,9 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
       (wl-summary-prev)
     (wl-summary-next)))
 
-(defsubst wl-summary-no-auto-refile-message-p (msg mark-alist)
-  (member (cadr (assq msg mark-alist)) wl-summary-auto-refile-skip-marks))
+(defsubst wl-summary-no-auto-refile-message-p (msg)
+  (member (elmo-msgdb-get-mark (wl-summary-buffer-msgdb) msg)
+         wl-summary-auto-refile-skip-marks))
 
 (defun wl-summary-auto-refile (&optional open-all)
   "Set refile mark automatically according to 'wl-refile-guess-by-rule'."
@@ -3405,51 +3305,44 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
             open-all)
        (wl-thread-open-all))
     (let* ((spec (wl-summary-buffer-folder-name))
-          (overview (elmo-msgdb-get-overview
-                     (wl-summary-buffer-msgdb)))
-          (mark-alist (elmo-msgdb-get-mark-alist
-                       (wl-summary-buffer-msgdb)))
           checked-dsts
           (count 0)
           number dst thr-entity)
       (goto-line 1)
       (while (not (eobp))
        (setq number (wl-summary-message-number))
-       (when (and (not (wl-summary-no-auto-refile-message-p number
-                                                            mark-alist))
-                  (setq dst
-                        (wl-folder-get-realname
-                         (wl-refile-guess-by-rule
-                          (elmo-msgdb-overview-get-entity
-                           number (wl-summary-buffer-msgdb)))))
-                  (not (equal dst spec)))
-         (when (not (member dst checked-dsts))
-           (wl-folder-confirm-existence (wl-folder-get-elmo-folder dst))
-           (setq checked-dsts (cons dst checked-dsts)))
-         (if (wl-summary-refile dst number)
-             (incf count))
-         (message "Marking...%d message(s)." count))
-       (if (eq wl-summary-buffer-view 'thread)
-           ;; process invisible children.
-           (unless (wl-thread-entity-get-opened
-                    (setq thr-entity (wl-thread-get-entity number)))
-             (let ((messages
-                    (elmo-delete-if
-                     (function
-                      (lambda (x)
-                        (wl-summary-no-auto-refile-message-p
-                         x mark-alist)))
-                     (wl-thread-entity-get-descendant thr-entity))))
-               (while messages
-                 (when (and (setq dst
-                                  (wl-refile-guess-by-rule
-                                   (elmo-msgdb-overview-get-entity
-                                    (car messages) (wl-summary-buffer-msgdb))))
-                            (not (equal dst spec)))
-                   (if (wl-summary-refile dst (car messages))
-                       (incf count))
-                   (message "Marking...%d message(s)." count))
-                 (setq messages (cdr messages))))))
+       (dolist (number (cons number
+                             (and (eq wl-summary-buffer-view 'thread)
+                                  ;; process invisible children.
+                                  (not (wl-thread-entity-get-opened
+                                        (setq thr-entity
+                                              (wl-thread-get-entity number))))
+                                  (wl-thread-entity-get-descendant
+                                   thr-entity))))
+         (when (and (not (wl-summary-no-auto-refile-message-p
+                          number))
+                    (setq dst
+                          (wl-folder-get-realname
+                           (wl-refile-guess-by-rule
+                            (elmo-msgdb-overview-get-entity
+                             number (wl-summary-buffer-msgdb)))))
+                    (not (equal dst spec))
+                    (let ((pair (assoc dst checked-dsts))
+                          ret)
+                      (if pair
+                          (cdr pair)
+                        (setq ret
+                              (condition-case nil
+                                  (progn
+                                    (wl-folder-confirm-existence
+                                     (wl-folder-get-elmo-folder dst))
+                                    t)
+                                (error)))
+                        (setq checked-dsts (cons (cons dst ret) checked-dsts))
+                        ret)))
+           (if (wl-summary-refile dst number)
+               (incf count))
+           (message "Marking...%d message(s)." count)))
        (forward-line))
       (if (eq count 0)
          (message "No message was marked.")
@@ -3471,15 +3364,13 @@ If optional argument NUMBER is specified, unmark message specified by NUMBER."
          (setq visible (wl-summary-jump-to-msg number))
        (setq visible t))
       ;; Delete mark on buffer.
-      (when (and visible
-                (looking-at "^ *\\(-?[0-9]+\\)\\([^0-9]\\)"))
-       (goto-char (match-end 2))
-       (or number
-           (setq number (string-to-int (wl-match-buffer 1))))
-       (setq cur-mark (wl-match-buffer 2))
+      (when visible
+       (setq cur-mark (wl-summary-temp-mark))
        (if (string= cur-mark " ")
            ()
-         (delete-region (match-beginning 2) (match-end 2))
+         (delete-backward-char 1)
+         (or number
+             (setq number (wl-summary-message-number)))
          (if (setq score-mark (wl-summary-get-score-mark number))
              (insert score-mark)
            (insert " ")))
@@ -3489,7 +3380,7 @@ If optional argument NUMBER is specified, unmark message specified by NUMBER."
        (if wl-summary-highlight
            (wl-highlight-summary-current-line nil nil score-mark))
        (set-buffer-modified-p nil))
-      ;; Remove from temporary mark structure.
+      ;; Remove from temporal mark structure.
       (and number
           (wl-summary-delete-mark number)))))
 
@@ -3538,7 +3429,7 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
 
 
 (defun wl-summary-refile-region (beg end)
-  "Put copy mark on messages in the region specified by BEG and END."
+  "Put refile mark on messages in the region specified by BEG and END."
   (interactive "r")
   (wl-summary-refile-region-subr "refile" beg end))
 
@@ -3645,18 +3536,18 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
 
 (defun wl-summary-delete-all-mark (mark)
   (goto-char (point-min))
-  (let ((case-fold-search nil))
-    (while (re-search-forward (format "^ *-?[0-9]+%s"
-                                     (regexp-quote mark)) nil t)
+  (while (not (eobp))
+    (when (string= (wl-summary-temp-mark) mark)
       (wl-summary-unmark))
-    (cond ((string= mark "*")
-          (setq wl-summary-buffer-target-mark-list nil))
-         ((string= mark "D")
-          (setq wl-summary-buffer-delete-list nil))
-         ((string= mark "O")
-          (setq wl-summary-buffer-copy-list nil))
-         ((string= mark "o")
-          (setq wl-summary-buffer-refile-list nil)))))
+    (forward-line 1))
+  (cond ((string= mark "*")
+        (setq wl-summary-buffer-target-mark-list nil))
+       ((string= mark "D")
+        (setq wl-summary-buffer-delete-list nil))
+       ((string= mark "O")
+        (setq wl-summary-buffer-copy-list nil))
+       ((string= mark "o")
+        (setq wl-summary-buffer-refile-list nil))))
 
 (defun wl-summary-unmark-all ()
   "Unmark all according to what you input."
@@ -3671,45 +3562,47 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
 
 (defun wl-summary-target-mark-thread ()
   (interactive)
-  (let (beg end)
-    (end-of-line)
-    (wl-summary-goto-top-of-current-thread)
-    (wl-thread-force-open)
-    (setq beg (point))
-    (end-of-line)
-    (wl-summary-goto-bottom-of-current-thread)
-;;; (forward-line -1)
-    (beginning-of-line)
-    (setq end (point))
-    (wl-summary-target-mark-region beg end)))
+  (wl-thread-call-region-func 'wl-summary-target-mark-region t))
 
 (defun wl-summary-target-mark-msgs (msgs)
-  (while msgs
-    (if (eq wl-summary-buffer-view 'thread)
-       (wl-thread-jump-to-msg (car msgs))
-      (wl-summary-jump-to-msg (car msgs)))
-    (wl-summary-target-mark (wl-summary-message-number))
-    (setq msgs (cdr msgs))))
+  "Return the number of marked messages."
+  (let ((i 0) num)
+    (while msgs
+      (if (eq wl-summary-buffer-view 'thread)
+         (wl-thread-jump-to-msg (car msgs))
+       (wl-summary-jump-to-msg (car msgs)))
+      (setq num (wl-summary-message-number))
+      (when (eq num (car msgs))
+       (wl-summary-target-mark num)
+       (setq i (1+ i)))
+      (setq msgs (cdr msgs)))
+    i))
 
 (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))))
-    (if delete-marks
-      (let ((mlist wl-summary-buffer-target-mark-list))
-       (while mlist
-         (when (wl-summary-jump-to-msg (car mlist))
-           (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))))
+  (save-excursion
+    (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))
+          num)
+      (if delete-marks
+         (let ((mlist wl-summary-buffer-target-mark-list))
+           (while mlist
+             (when (wl-summary-jump-to-msg (car mlist))
+               (wl-summary-unmark))
+             (setq mlist (cdr mlist)))
+           (setq wl-summary-buffer-target-mark-list nil)))
+      (if (and result
+              (setq num (wl-summary-target-mark-msgs result))
+              (> num 0))
+         (if (= num (length result))
+             (message "%d message(s) are picked." num)
+           (message "%d(%d) message(s) are picked." num
+                    (- (length result) num)))
+       (message "No message was picked.")))))
 
 (defun wl-summary-unvirtual ()
   "Exit from current virtual folder."
@@ -3736,19 +3629,26 @@ If ARG, exit virtual folder."
                                         (wl-summary-buffer-folder-name))
                                 'update nil nil t)))
 
-(defun wl-summary-delete-all-temp-marks ()
+(defun wl-summary-delete-all-temp-marks (&optional no-msg)
+  "Erase all temp marks from buffer."
   (interactive)
-  (save-excursion
-    (goto-char (point-min))
-    (message "Unmarking...")
-    (while (not (eobp))
-      (wl-summary-unmark)
-      (forward-line))
-    (message "Unmarking...done")
-    (setq wl-summary-buffer-target-mark-list nil)
-    (setq wl-summary-buffer-delete-list nil)
-    (setq wl-summary-buffer-refile-list nil)
-    (setq wl-summary-buffer-copy-list nil)))
+  (when (or wl-summary-buffer-target-mark-list
+           wl-summary-buffer-delete-list
+           wl-summary-buffer-refile-list
+           wl-summary-buffer-copy-list)
+    (save-excursion
+      (goto-char (point-min))
+      (unless no-msg
+       (message "Unmarking..."))
+      (while (not (eobp))
+       (wl-summary-unmark)
+       (forward-line 1))
+      (unless no-msg
+       (message "Unmarking...done"))
+      (setq wl-summary-buffer-target-mark-list nil)
+      (setq wl-summary-buffer-delete-list nil)
+      (setq wl-summary-buffer-refile-list nil)
+      (setq wl-summary-buffer-copy-list nil))))
 
 (defun wl-summary-delete-mark (number)
   "Delete temporary mark of the message specified by NUMBER."
@@ -3769,38 +3669,42 @@ If ARG, exit virtual folder."
        (setq wl-summary-buffer-refile-list
              (delq pair wl-summary-buffer-refile-list))))))))
 
+(defsubst wl-summary-temp-mark ()
+  "Move to the temp-mark column and return mark string."
+  (move-to-column wl-summary-buffer-temp-mark-column)
+  (buffer-substring (- (point) 1) (point)))
+
+(defsubst wl-summary-persistent-mark ()
+  "Move to the persistent-mark column and return mark string."
+  (move-to-column wl-summary-buffer-persistent-mark-column)
+  (buffer-substring (- (point) 1) (point)))
+
 (defun wl-summary-mark-line (mark)
   "Put MARK on current line.  Return message number."
   (save-excursion
     (beginning-of-line)
     (let ((inhibit-read-only t)
-         (buffer-read-only nil)
-         msg-num
-         cur-mark)
-      (when (looking-at "^ *\\(-?[0-9]+\\)\\([^0-9]\\)")
-       (setq msg-num  (string-to-int (wl-match-buffer 1)))
-       (setq cur-mark (wl-match-buffer 2))
-       (goto-char (match-end 1))
-       (delete-region (match-beginning 2) (match-end 2))
-;;;    (wl-summary-delete-mark msg-num)
-       (insert mark)
-       (if wl-summary-highlight
-           (wl-highlight-summary-current-line nil nil t))
-       (set-buffer-modified-p nil)
-       msg-num))))
+         (buffer-read-only nil))
+      (wl-summary-temp-mark) ; mark
+      (delete-backward-char 1)
+      (insert mark)
+      (if wl-summary-highlight
+         (wl-highlight-summary-current-line nil nil t))
+      (set-buffer-modified-p nil))))
 
 (defun wl-summary-target-mark-delete ()
   (interactive)
   (save-excursion
     (goto-char (point-min))
-    (let ((regexp (concat "^" wl-summary-buffer-number-regexp "\\(\\*\\)"))
-         number mlist)
-      (while (re-search-forward regexp nil t)
-       (let (wl-summary-buffer-disp-msg)
-         (when (setq number (wl-summary-message-number))
-           (wl-summary-delete number)
-           (setq wl-summary-buffer-target-mark-list
-                 (delq number wl-summary-buffer-target-mark-list)))))
+    (let (number mlist)
+      (while (not (eobp))
+       (when (string= (wl-summary-temp-mark) "*")
+         (let (wl-summary-buffer-disp-msg)
+           (when (setq number (wl-summary-message-number))
+             (wl-summary-delete number)
+             (setq wl-summary-buffer-target-mark-list
+                   (delq number wl-summary-buffer-target-mark-list)))))
+       (forward-line 1))
       (setq mlist wl-summary-buffer-target-mark-list)
       (while mlist
        (wl-append wl-summary-buffer-delete-list (list (car mlist)))
@@ -3828,9 +3732,8 @@ If ARG, exit virtual folder."
              (when (wl-summary-jump-to-msg (car mlist))
                (wl-summary-unmark)
                (when new-mark
-                 (when (looking-at "^ *-?[0-9]+[^0-9]\\([^0-9]\\)")
-                   (delete-region (match-beginning 1) (match-end 1)))
-                 (goto-char (match-beginning 1))
+                 (wl-summary-persistent-mark) ; move
+                 (delete-backward-char 1)
                  (insert new-mark)
                  (if wl-summary-highlight
                      (wl-highlight-summary-current-line))
@@ -3848,34 +3751,34 @@ If ARG, exit virtual folder."
         (intern (format "wl-summary-buffer-%s-list" copy-or-refile)))
        (function
         (intern (format "wl-summary-%s" copy-or-refile)))
+       (numlist wl-summary-buffer-number-list)
        regexp number msgid entity folder mlist)
     (save-excursion
-      (goto-char (point-min))
-      (setq regexp (concat "^" wl-summary-buffer-number-regexp "\\(\\*\\)"))
       ;; guess by first mark
-      (when (re-search-forward regexp nil t)
-       (setq msgid (cdr (assq (setq number (wl-summary-message-number))
-                              (elmo-msgdb-get-number-alist
-                               (wl-summary-buffer-msgdb))))
-             entity (assoc msgid
-                           (elmo-msgdb-get-overview
-                            (wl-summary-buffer-msgdb))))
+      (while numlist
+       (if (memq (car numlist) wl-summary-buffer-target-mark-list)
+           (setq number (car numlist)
+                 numlist nil))
+       (setq numlist (cdr numlist)))
+      (when number
+       (setq msgid (elmo-message-field wl-summary-buffer-elmo-folder
+                                       number 'message-id)
+             entity (elmo-msgdb-overview-get-entity
+                     number (wl-summary-buffer-msgdb)))
        (if (null entity)
            (error "Cannot %s" copy-or-refile))
-       (funcall function
-                (setq folder (wl-summary-read-folder
-                              (wl-refile-guess entity)
-                              (format "for %s" copy-or-refile)))
-                number)
-       (if number
-           (setq wl-summary-buffer-target-mark-list
-                 (delq number wl-summary-buffer-target-mark-list)))
-       (while (re-search-forward regexp nil t)
-         (let (wl-summary-buffer-disp-msg)
-           (when (setq number (wl-summary-message-number))
-             (funcall function folder number)
-             (setq wl-summary-buffer-target-mark-list
-                   (delq number wl-summary-buffer-target-mark-list)))))
+       (setq folder (wl-summary-read-folder
+                     (wl-refile-guess entity)
+                     (format "for %s" copy-or-refile)))
+       (goto-char (point-min))
+       (while (not (eobp))
+         (when (string= (wl-summary-temp-mark) "*")
+           (let (wl-summary-buffer-disp-msg)
+             (when (setq number (wl-summary-message-number))
+               (funcall function folder number)
+               (setq wl-summary-buffer-target-mark-list
+                     (delq number wl-summary-buffer-target-mark-list)))))
+         (forward-line 1))
        ;; process invisible messages.
        (setq mlist wl-summary-buffer-target-mark-list)
        (while mlist
@@ -3886,6 +3789,28 @@ If ARG, exit virtual folder."
                (delq (car mlist) wl-summary-buffer-target-mark-list))
          (setq mlist (cdr mlist)))))))
 
+(defun wl-summary-next-buffer ()
+  "Switch to next summary buffer."
+  (interactive)
+  (let ((buffers (sort (wl-collect-summary)
+                      (lambda (buffer1 buffer2)
+                        (string-lessp (buffer-name buffer1)
+                                      (buffer-name buffer2))))))
+    (switch-to-buffer
+     (or (cadr (memq (current-buffer) buffers))
+        (car buffers)))))
+
+(defun wl-summary-previous-buffer ()
+  "Switch to previous summary buffer."
+  (interactive)
+  (let ((buffers (sort (wl-collect-summary)
+                      (lambda (buffer1 buffer2)
+                        (not (string-lessp (buffer-name buffer1)
+                                           (buffer-name buffer2)))))))
+    (switch-to-buffer
+     (or (cadr (memq (current-buffer) buffers))
+        (car buffers)))))
+
 (defun wl-summary-target-mark-copy ()
   (interactive)
   (wl-summary-target-mark-refile-subr "copy"))
@@ -3898,50 +3823,51 @@ If ARG, exit virtual folder."
   (interactive)
   (save-excursion
     (goto-char (point-min))
-    (let ((regexp (concat "^" wl-summary-buffer-number-regexp "\\(\\*\\)"))
-         (inhibit-read-only t)
+    (let ((inhibit-read-only t)
          (buffer-read-only nil)
+         wl-summary-buffer-disp-msg
          number mlist)
-      (while (re-search-forward regexp nil t)
-       (let (wl-summary-buffer-disp-msg)
+      (while (not (eobp))
+       (when (string= (wl-summary-temp-mark) "*")
          ;; delete target-mark from buffer.
-         (delete-region (match-beginning 1) (match-end 1))
+         (delete-backward-char 1)
          (insert " ")
-         (setq number (wl-summary-mark-as-read t))
+         (setq number (wl-summary-message-number))
+         (wl-summary-mark-as-read number)
          (if wl-summary-highlight
              (wl-highlight-summary-current-line))
          (if number
              (setq wl-summary-buffer-target-mark-list
-                   (delq number wl-summary-buffer-target-mark-list)))))
+                   (delq number wl-summary-buffer-target-mark-list))))
+       (forward-line 1))
       (setq mlist wl-summary-buffer-target-mark-list)
       (while mlist
-       (wl-summary-mark-as-read t nil nil (car mlist))
+       (wl-summary-mark-as-read (car mlist))
        (setq wl-summary-buffer-target-mark-list
              (delq (car mlist) wl-summary-buffer-target-mark-list))
        (setq mlist (cdr mlist)))
-      (wl-summary-count-unread
-       (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+      (wl-summary-count-unread)
       (wl-summary-update-modeline))))
 
 (defun wl-summary-target-mark-mark-as-unread ()
   (interactive)
   (save-excursion
     (goto-char (point-min))
-    (let ((regexp (concat "^" wl-summary-buffer-number-regexp "\\(\\*\\)"))
-         (inhibit-read-only t)
+    (let ((inhibit-read-only t)
          (buffer-read-only nil)
+         wl-summary-buffer-disp-msg
          number mlist)
-      (while (re-search-forward regexp nil t)
-       (let (wl-summary-buffer-disp-msg)
-         ;; delete target-mark from buffer.
-         (delete-region (match-beginning 1) (match-end 1))
+      (while (not (eobp))
+       (when (string= (wl-summary-temp-mark) "*")
+         (delete-backward-char 1)
          (insert " ")
          (setq number (wl-summary-mark-as-unread))
          (if wl-summary-highlight
              (wl-highlight-summary-current-line))
          (if number
              (setq wl-summary-buffer-target-mark-list
-                   (delq number wl-summary-buffer-target-mark-list)))))
+                   (delq number wl-summary-buffer-target-mark-list))))
+       (forward-line 1))
       (setq mlist wl-summary-buffer-target-mark-list)
       (while mlist
        (wl-summary-mark-as-unread (car mlist))
@@ -3949,29 +3875,29 @@ If ARG, exit virtual folder."
        (setq wl-summary-buffer-target-mark-list
              (delq (car mlist) wl-summary-buffer-target-mark-list))
        (setq mlist (cdr mlist)))
-      (wl-summary-count-unread
-       (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+      (wl-summary-count-unread)
       (wl-summary-update-modeline))))
 
 (defun wl-summary-target-mark-mark-as-important ()
   (interactive)
   (save-excursion
     (goto-char (point-min))
-    (let ((regexp (concat "^" wl-summary-buffer-number-regexp "\\(\\*\\)"))
-         (inhibit-read-only t)
+    (let ((inhibit-read-only t)
          (buffer-read-only nil)
+         wl-summary-buffer-disp-msg
          number mlist)
-      (while (re-search-forward regexp nil t)
-       (let (wl-summary-buffer-disp-msg)
+      (while (not (eobp))
+       (when (string= (wl-summary-temp-mark) "*")
          ;; delete target-mark from buffer.
-         (delete-region (match-beginning 1) (match-end 1))
+         (delete-backward-char 1)
          (insert " ")
          (setq number (wl-summary-mark-as-important))
          (if wl-summary-highlight
              (wl-highlight-summary-current-line))
          (if number
              (setq wl-summary-buffer-target-mark-list
-                   (delq number wl-summary-buffer-target-mark-list)))))
+                   (delq number wl-summary-buffer-target-mark-list))))
+       (forward-line 1))
       (setq mlist wl-summary-buffer-target-mark-list)
       (while mlist
        (wl-summary-mark-as-important (car mlist))
@@ -3979,116 +3905,87 @@ If ARG, exit virtual folder."
        (setq wl-summary-buffer-target-mark-list
              (delq (car mlist) wl-summary-buffer-target-mark-list))
        (setq mlist (cdr mlist)))
-      (wl-summary-count-unread
-       (elmo-msgdb-get-mark-alist (wl-summary-buffer-msgdb)))
+      (wl-summary-count-unread)
       (wl-summary-update-modeline))))
 
 (defun wl-summary-target-mark-save ()
   (interactive)
-  (save-excursion
-    (goto-char (point-min))
-    (let ((wl-save-dir
-          (wl-read-directory-name "Save to directory: " wl-tmp-dir))
-         (regexp (concat "^" wl-summary-buffer-number-regexp "\\(\\*\\)"))
-         number mlist)
-      (if (null (file-exists-p wl-save-dir))
-         (make-directory wl-save-dir))
-      (while (re-search-forward regexp nil t)
-       (let (wl-summary-buffer-disp-msg)
-         (setq number (wl-summary-save t wl-save-dir))
-         (wl-summary-unmark)
-         (if number
-             (setq wl-summary-buffer-target-mark-list
-                   (delq number wl-summary-buffer-target-mark-list))))))))
+  (let ((wl-save-dir
+        (wl-read-directory-name "Save to directory: "
+                                wl-temporary-file-directory))
+       number)
+    (if (null (file-exists-p wl-save-dir))
+       (make-directory wl-save-dir))
+    (while (setq number (car wl-summary-buffer-target-mark-list))
+      (wl-thread-jump-to-msg number)
+      (wl-summary-save t wl-save-dir)
+      (wl-summary-unmark number))))
 
 (defun wl-summary-target-mark-pick ()
   (interactive)
   (wl-summary-pick wl-summary-buffer-target-mark-list 'delete))
 
-(defun wl-summary-mark-as-read (&optional notcrosses
-                                         leave-server-side-mark-untouched
-                                         displayed
-                                         number
-                                         cached)
+(defun wl-summary-mark-as-read (&optional number no-folder-mark)
   (interactive)
   (save-excursion
-    (let* (eol
-          (inhibit-read-only t)
-          (buffer-read-only nil)
-          (folder wl-summary-buffer-elmo-folder)
-          (msgdb (wl-summary-buffer-msgdb))
-          (mark-alist (elmo-msgdb-get-mark-alist msgdb))
-;;;       (number-alist (elmo-msgdb-get-number-alist msgdb))
-          (case-fold-search nil)
-          mark stat visible uncached new-mark marked)
-      (if number
-         (progn
-           (setq visible (wl-summary-jump-to-msg number))
-           (setq mark (cadr (assq number mark-alist))))
-       ;; interactive
-       (setq visible t))
-      (beginning-of-line)
-      (if (or (not visible)
-             (looking-at
-              (format "^ *\\(-?[0-9]+\\)[^0-9]\\(%s\\|%s\\|%s\\|%s\\).*$"
-                      (regexp-quote wl-summary-read-uncached-mark)
-                      (regexp-quote wl-summary-unread-uncached-mark)
-                      (regexp-quote wl-summary-unread-cached-mark)
-                      (regexp-quote wl-summary-new-mark))))
-         (progn
-           (setq mark (or mark (wl-match-buffer 2)))
-           (when mark
-             (cond
-              ((string= mark wl-summary-new-mark) ; N
-               (setq stat 'new)
-               (setq uncached t))
-              ((string= mark wl-summary-unread-uncached-mark) ; U
-               (setq stat 'unread)
-               (setq uncached t))
-              ((string= mark wl-summary-unread-cached-mark)  ; !
-               (setq stat 'unread))
-              (t
-               ;; no need to mark server.
-               (setq leave-server-side-mark-untouched t))))
-           (setq number (or number (string-to-int (wl-match-buffer 1))))
-           ;; set server side mark...
-           (setq new-mark (if (and uncached
-                                   (if (elmo-message-use-cache-p folder number)
-                                       (not (elmo-folder-local-p folder)))
-                                   (not cached))
-                              wl-summary-read-uncached-mark
-                            nil))
-           (if (not leave-server-side-mark-untouched)
-               (save-match-data
-                 (setq marked (elmo-folder-mark-as-read
-                               folder
-                               (list number)))))
-           (if (or leave-server-side-mark-untouched
-                   marked)
-               (progn
-                 (cond ((eq stat 'unread)
-                        (setq wl-summary-buffer-unread-count
-                              (1- wl-summary-buffer-unread-count)))
-                       ((eq stat 'new)
-                        (setq wl-summary-buffer-new-count
-                              (1- wl-summary-buffer-new-count))))
-                 (wl-summary-update-modeline)
-                 (wl-folder-update-unread
-                  (wl-summary-buffer-folder-name)
-                  (+ wl-summary-buffer-unread-count
-                     wl-summary-buffer-new-count))
-                 (when (or stat cached)
-                   (when visible
-                     (goto-char (match-end 2))
-                     (delete-region (match-beginning 2) (match-end 2))
-                     (insert (or new-mark " ")))
-                   (setq mark-alist
-                         (elmo-msgdb-mark-set mark-alist number new-mark))
-                   (elmo-msgdb-set-mark-alist msgdb mark-alist)
-                   (wl-summary-set-mark-modified))
-                 (if (and visible wl-summary-highlight)
-                     (wl-highlight-summary-current-line nil nil t)))
-             (if mark (message "Warning: Changing mark failed.")))))
+    (let ((buffer-read-only nil)
+         (folder wl-summary-buffer-elmo-folder)
+         (msgdb (wl-summary-buffer-msgdb))
+         (case-fold-search nil)
+         cur-mark mark stat visible uncached new-mark marked)
+      (setq number (or number (wl-summary-message-number))
+           visible (if number
+                       (wl-summary-jump-to-msg number)
+                     ;; interactive
+                     t)
+           mark (elmo-msgdb-get-mark msgdb number))
+      (cond
+       ((string= mark wl-summary-new-mark) ; N
+       (setq stat 'new))
+       ((string= mark wl-summary-unread-uncached-mark) ; U
+       (setq stat 'unread))
+       ((string= mark wl-summary-unread-cached-mark)  ; !
+       (setq stat 'unread))
+       ((string= mark wl-summary-read-uncached-mark)  ; u
+       (setq stat 'read))
+       (t
+       ;; no need to mark server.
+       (setq no-folder-mark t)))
+      (setq new-mark
+           (if (and (if (elmo-message-use-cache-p folder number)
+                        (not (elmo-folder-local-p folder)))
+                    (not (elmo-file-cache-exists-p
+                          (elmo-message-field wl-summary-buffer-elmo-folder
+                                              number 'message-id))))
+               wl-summary-read-uncached-mark
+             nil))
+      ;; folder mark.
+      (unless no-folder-mark
+       (setq marked (elmo-folder-mark-as-read folder (list number))))
+      (when (or no-folder-mark marked)
+       (cond ((eq stat 'unread)
+              (setq wl-summary-buffer-unread-count
+                    (1- wl-summary-buffer-unread-count)))
+             ((eq stat 'new)
+              (setq wl-summary-buffer-new-count
+                    (1- wl-summary-buffer-new-count))))
+       (wl-summary-update-modeline)
+       (wl-folder-update-unread
+        (wl-summary-buffer-folder-name)
+        (+ wl-summary-buffer-unread-count
+           wl-summary-buffer-new-count))
+       (when stat
+         ;; set mark on buffer
+         (when visible
+           (unless (string= (wl-summary-persistent-mark) new-mark)
+             (delete-backward-char 1)
+             (insert (or new-mark " "))))
+         ;; set msgdb mark.
+         (unless (string= mark new-mark)
+           (elmo-msgdb-set-mark msgdb number new-mark))
+         (wl-summary-set-mark-modified))
+       (if (and visible wl-summary-highlight)
+           (wl-highlight-summary-current-line nil nil t)))
       (set-buffer-modified-p nil)
       (if stat
          (run-hooks 'wl-summary-unread-message-hook))
@@ -4108,13 +4005,12 @@ If ARG, exit virtual folder."
          (buffer-read-only nil)
          (folder wl-summary-buffer-elmo-folder)
          (msgdb (wl-summary-buffer-msgdb))
-         (mark-alist (elmo-msgdb-get-mark-alist msgdb))
          (number-alist (elmo-msgdb-get-number-alist msgdb))
-         message-id visible)
+         message-id visible cur-mark)
       (if number
          (progn
            (setq visible (wl-summary-jump-to-msg number))
-           (setq mark (or mark (cadr (assq number mark-alist)))))
+           (setq mark (or mark (elmo-msgdb-get-mark msgdb number))))
        (setq visible t))
       (when visible
        (if (null (setq number (wl-summary-message-number)))
@@ -4123,15 +4019,14 @@ If ARG, exit virtual folder."
              (setq visible nil))
          (end-of-line)
          (setq eol (point))
-         (re-search-backward (concat "^" wl-summary-buffer-number-regexp
-                                     "..../..") nil t)) ; set cursor line
-       (beginning-of-line))
+         (wl-summary-goto-previous-message-beginning)))
       (if (or (and (not visible)
-                  (assq number (elmo-msgdb-get-number-alist msgdb)))
-             (re-search-forward "^ *\\(-?[0-9]+\\)[^0-9]\\([^0-9]\\)" eol t))
+                  ;; already exists in msgdb.
+                  (elmo-msgdb-overview-get-entity number msgdb))
+             (setq cur-mark (wl-summary-persistent-mark)))
          (progn
-           (setq number (or number (string-to-int (wl-match-buffer 1))))
-           (setq mark (or mark (wl-match-buffer 2)))
+           (setq number (or number (wl-summary-message-number)))
+           (setq mark (or mark cur-mark))
            (setq message-id (elmo-message-field
                              wl-summary-buffer-elmo-folder
                              number
@@ -4150,157 +4045,199 @@ If ARG, exit virtual folder."
                        (elmo-file-cache-delete
                         (elmo-file-cache-get-path message-id))))
                  (when visible
-                   (delete-region (match-beginning 2) (match-end 2))
+                   (delete-backward-char 1)
                    (insert " "))
-                 (setq mark-alist
-                       (elmo-msgdb-mark-set mark-alist
-                                            number
-                                            nil)))
+                 (elmo-msgdb-set-mark msgdb number nil))
              ;; server side mark
              (save-match-data
                (unless no-server-update
                  (elmo-folder-mark-as-important folder (list number))))
              (when visible
-               (delete-region (match-beginning 2) (match-end 2))
+               (delete-backward-char 1)
                (insert wl-summary-important-mark))
-             (setq mark-alist
-                   (elmo-msgdb-mark-set mark-alist
-                                        number
-                                        wl-summary-important-mark))
-             (if (elmo-file-cache-exists-p message-id)
+             (elmo-msgdb-set-mark msgdb number
+                                  wl-summary-important-mark)
+             (if (eq (elmo-file-cache-exists-p message-id) 'entire)
                  (elmo-folder-mark-as-read folder (list number))
                ;; Force cache message.
                (elmo-message-encache folder number 'read))
              (unless no-server-update
                (elmo-msgdb-global-mark-set message-id
                                            wl-summary-important-mark)))
-           (elmo-msgdb-set-mark-alist msgdb mark-alist)
            (wl-summary-set-mark-modified)))
       (if (and visible wl-summary-highlight)
          (wl-highlight-summary-current-line nil nil t))))
   (set-buffer-modified-p nil)
   number)
 
-(defsubst wl-summary-format-date (date-string)
+;;; Summary line.
+(defvar wl-summary-line-formatter nil)
+
+(defun wl-summary-view-old-p ()
+  "Return non-nil when summary view cache has old format."
+  (save-excursion
+    (goto-char (point-min))
+    (and wl-summary-buffer-number-list
+        (not (re-search-forward "\r-?[0-9]+" (point-at-eol) t)))))
+
+(defun wl-summary-line-format-changed-p ()
+  "Return non-nil when summary line format is changed."
+  (not (string=
+       wl-summary-buffer-line-format
+       (or (elmo-object-load (expand-file-name 
+                              wl-summary-line-format-file
+                              (elmo-folder-msgdb-path
+                               wl-summary-buffer-elmo-folder))
+                             wl-summary-buffer-mime-charset)
+           wl-summary-buffer-line-format))))
+
+(defun wl-summary-line-format-save ()
+  "Save current summary line format."
+  (elmo-object-save
+   (expand-file-name wl-summary-line-format-file
+                    (elmo-folder-msgdb-path
+                     wl-summary-buffer-elmo-folder))
+   wl-summary-buffer-line-format
+   wl-summary-buffer-mime-charset))
+
+(defun wl-summary-line-number ()
+  (wl-set-string-width
+   (- wl-summary-buffer-number-column)
+   (number-to-string
+    (elmo-msgdb-overview-entity-get-number wl-message-entity))))
+
+(defun wl-summary-line-year ()
+  (aref wl-datevec 0))
+(defun wl-summary-line-month ()
+  (format "%02d" (aref wl-datevec 1)))
+(defun wl-summary-line-day ()
+  (format "%02d" (aref wl-datevec 2)))
+(defun wl-summary-line-day-of-week ()
   (condition-case nil
-      (let ((datevec (timezone-fix-time date-string nil
-                                       wl-summary-fix-timezone)))
-       (format "%02d/%02d(%s)%02d:%02d"
-               (aref datevec 1)
-               (aref datevec 2)
-               (elmo-date-get-week (aref datevec 0)
-                                   (aref datevec 1)
-                                   (aref datevec 2))
-               (aref datevec 3)
-               (aref datevec 4)))
-    (error "??/??(??)??:??")))
-
-(defun wl-summary-overview-create-summary-line (msg
-                                               entity
-                                               parent-entity
-                                               depth
-                                               mark-alist
-                                               &optional
-                                               children-num
-                                               temp-mark thr-entity
-                                               subject-differ)
-  (let ((wl-mime-charset wl-summary-buffer-mime-charset)
-       (elmo-mime-charset wl-summary-buffer-mime-charset)
-       no-parent before-indent
-       from subject parent-raw-subject parent-subject
-       mark line
-       (elmo-lang wl-summary-buffer-weekday-name-lang)
-       (children-num (if children-num (int-to-string children-num)))
-       (thr-str "")
-       linked)
-    (when thr-entity
-      (setq thr-str (wl-thread-make-indent-string thr-entity))
-      (setq linked (wl-thread-entity-get-linked thr-entity)))
-    (if (string= thr-str "")
+      (elmo-date-get-week (aref wl-datevec 0)
+                         (aref wl-datevec 1)
+                         (aref wl-datevec 2))
+    (error "??")))
+(defun wl-summary-line-hour ()
+  (format "%02d" (aref wl-datevec 3)))
+(defun wl-summary-line-minute ()
+  (format "%02d" (aref wl-datevec 4)))
+
+(defun wl-summary-line-size ()
+  (let ((size (elmo-msgdb-overview-entity-get-size wl-message-entity)))
+    (if size
+       (cond
+        ((<= 1 (/ size 1048576))
+         (format "%.0fM" (/ size 1048576.0)))
+        ((<= 1 (/ size 1024))
+         (format "%.0fK" (/ size 1024.0)))
+        (t (format "%dB" size)))
+      "")))
+
+(defvar wl-summary-line-subject-minimum-length nil)
+(defun wl-summary-line-subject ()
+  (let (no-parent subject parent-raw-subject parent-subject)
+    (if (string= wl-thr-indent-string "")
        (setq no-parent t)) ; no parent
-    (if (and wl-summary-width
-            wl-summary-indent-length-limit
-            (< wl-summary-indent-length-limit
-               (string-width thr-str)))
-       (setq thr-str (wl-set-string-width
-                      wl-summary-indent-length-limit
-                      thr-str)))
-    (setq from
-         (wl-set-string-width
-          (if children-num
-              (- wl-from-width (length children-num) 2)
-            wl-from-width)
-          (elmo-delete-char ?\n
-                            (wl-summary-from-func-internal
-                             (elmo-msgdb-overview-entity-get-from entity)))))
     (setq subject
          (elmo-delete-char ?\n
                            (or (elmo-msgdb-overview-entity-get-subject
-                                entity)
+                                wl-message-entity)
                                wl-summary-no-subject-message)))
     (setq parent-raw-subject
-         (elmo-msgdb-overview-entity-get-subject parent-entity))
+         (elmo-msgdb-overview-entity-get-subject wl-parent-message-entity))
     (setq parent-subject
          (if parent-raw-subject
              (elmo-delete-char ?\n parent-raw-subject)))
-    (setq mark (or (cadr (assq msg mark-alist)) " "))
-    (setq line
-         (concat
-          (setq before-indent
-                (format (concat "%"
-                                (int-to-string
-                                 wl-summary-buffer-number-column)
-                                "s%s%s%s %s")
-                        msg
-                        (or temp-mark " ")
-                        mark
-                        (wl-summary-format-date
-                         (elmo-msgdb-overview-entity-get-date entity))
-                        (if thr-str thr-str "")))
-          (format (if linked
-                      "<%s > %s"
-                    "[%s ] %s")
-                  (if children-num
-                      (concat "+" children-num ": " from)
-                    (concat " " from))
-                  (progn
-                    (setq subject
-                          (if (or no-parent
-                                  (null parent-subject)
-                                  (not (wl-summary-subject-equal
-                                        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)
-                      subject)))))
+    (setq subject
+         (if (or no-parent
+                 (null parent-subject)
+                 (not (wl-summary-subject-equal
+                       subject parent-subject)))
+             (funcall wl-summary-subject-function subject)
+           ""))
+    (when (and wl-summary-line-subject-minimum-length
+              (< (string-width subject)
+                 wl-summary-line-subject-minimum-length))
+      (while (< (string-width subject)
+               wl-summary-line-subject-minimum-length)
+       (setq subject (concat subject " "))))
+    (if (and (not wl-summary-width)
+            wl-summary-subject-length-limit)
+       (truncate-string subject
+                        wl-summary-subject-length-limit)
+      subject)))
+
+(defun wl-summary-line-from ()
+  (elmo-delete-char ?\n
+                   (funcall wl-summary-from-function
+                            (elmo-msgdb-overview-entity-get-from
+                             wl-message-entity))))
+
+(defun wl-summary-line-list-info ()
+  (let ((list-info (wl-summary-get-list-info wl-message-entity)))
+    (if (and (car list-info) (cdr list-info))
+       (format "(%s %05d)" (car list-info) (cdr list-info))
+      "")))
+
+(defun wl-summary-line-list-count ()
+  (let ((ml-count (cdr (wl-summary-get-list-info wl-message-entity))))
+    (if ml-count
+       (format "%.0f" ml-count)
+      "")))
+
+(defun wl-summary-line-attached ()
+  (let ((content-type (elmo-msgdb-overview-entity-get-extra-field
+                      wl-message-entity "content-type")))
+    (if (and content-type
+            (string-match "multipart/mixed" content-type))
+       "@"
+      "")))
+
+(defun wl-summary-create-line (wl-message-entity
+                              wl-parent-message-entity
+                              wl-temp-mark
+                              wl-persistent-mark
+                              &optional
+                              wl-thr-children-number
+                              wl-thr-indent-string
+                              wl-thr-linked)
+  "Create a summary line."
+  (let ((wl-mime-charset wl-summary-buffer-mime-charset)
+       (elmo-mime-charset wl-summary-buffer-mime-charset)
+       (elmo-lang wl-summary-buffer-weekday-name-lang)
+       (wl-datevec (or (ignore-errors (timezone-fix-time
+                                       (elmo-msgdb-overview-entity-get-date 
+                                        wl-message-entity)
+                                       nil
+                                       wl-summary-fix-timezone))
+                       (make-vector 5 0)))
+       (entity wl-message-entity) ; backward compatibility.
+       line mark)
+    (if (and wl-thr-indent-string
+            wl-summary-indent-length-limit
+            (< wl-summary-indent-length-limit
+               (string-width wl-thr-indent-string)))
+       (setq wl-thr-indent-string (wl-set-string-width
+                                   wl-summary-indent-length-limit
+                                   wl-thr-indent-string)))
+    (setq line (funcall wl-summary-buffer-line-formatter))
     (if wl-summary-width (setq line
                               (wl-set-string-width
-                               (- wl-summary-width 1) line)))
+                               (- wl-summary-width 1) line nil
+                               'ignore-invalid)))
+    (setq line (concat line
+                      "\r"
+                      (number-to-string
+                       (elmo-msgdb-overview-entity-get-number 
+                        wl-message-entity))))
     (if wl-summary-highlight
        (wl-highlight-summary-line-string line
-                                         mark
-                                         temp-mark
-                                         thr-str))
+                                         wl-persistent-mark
+                                         wl-temp-mark
+                                         wl-thr-indent-string))
     line))
 
-(defsubst wl-summary-buffer-number-column-detect (update)
-  (let (end)
-    (save-excursion
-      (goto-char (point-min))
-      (setq wl-summary-buffer-number-column
-           (or
-            (if (and update
-                     (setq end (if (re-search-forward
-                                    "^ *-?[0-9]+[^0-9]" nil t)
-                                   (point))))
-                (- end (progn (beginning-of-line) (point)) 1))
-            (wl-get-assoc-list-value wl-summary-number-column-alist
-                                     (wl-summary-buffer-folder-name))
-            wl-summary-default-number-column))
-      (setq wl-summary-buffer-number-regexp
-           (wl-repeat-string "." wl-summary-buffer-number-column)))))
-
 (defsubst wl-summary-proc-wday (wday-str year month mday)
   (save-match-data
     (if (string-match "\\([A-Z][a-z][a-z]\\).*" wday-str)
@@ -4394,7 +4331,12 @@ If ARG, exit virtual folder."
           (cache (expand-file-name wl-summary-cache-file dir))
           (view (expand-file-name wl-summary-view-file dir))
           (save-view wl-summary-buffer-view)
+          (mark-list (copy-sequence wl-summary-buffer-target-mark-list))
+          (refile-list (copy-sequence wl-summary-buffer-refile-list))
+          (copy-list (copy-sequence wl-summary-buffer-copy-list))
+          (delete-list (copy-sequence wl-summary-buffer-delete-list))
           (tmp-buffer (get-buffer-create " *wl-summary-save-view-cache*"))
+          (temp-column wl-summary-buffer-temp-mark-column)
           (charset wl-summary-buffer-mime-charset))
       (if (file-directory-p dir)
          (); ok.
@@ -4403,14 +4345,27 @@ If ARG, exit virtual folder."
          (elmo-make-directory dir)))
       (if (eq save-view 'thread)
          (wl-thread-save-entity dir))
+      (when wl-summary-check-line-format
+       (wl-summary-line-format-save))
       (unwind-protect
          (progn
            (when (file-writable-p cache)
              (copy-to-buffer tmp-buffer (point-min) (point-max))
              (with-current-buffer tmp-buffer
                (widen)
-               (encode-mime-charset-region
-                (point-min) (point-max) charset)
+               (make-local-variable 'wl-summary-highlight)
+               (setq wl-summary-highlight nil
+                     wl-summary-buffer-target-mark-list mark-list
+                     wl-summary-buffer-refile-list refile-list
+                     wl-summary-buffer-copy-list copy-list
+                     wl-summary-buffer-delete-list delete-list
+                     wl-summary-buffer-temp-mark-column temp-column)
+               (wl-summary-delete-all-temp-marks)
+               (encode-coding-region
+                (point-min) (point-max)
+                (or (mime-charset-to-coding-system charset 'LF)
+                    ;; Mule 2 doesn't have `*ctext*unix'.
+                    (mime-charset-to-coding-system charset)))
                (write-region-as-binary (point-min)(point-max)
                                        cache nil 'no-msg)))
            (when (file-writable-p view) ; 'thread or 'sequence
@@ -4436,6 +4391,7 @@ 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
@@ -4601,11 +4557,19 @@ If ARG, exit virtual folder."
 
 (defun wl-summary-next-page ()
   (interactive)
-  (wl-message-next-page))
+  (let ((cur-buf (current-buffer)))
+    (wl-summary-toggle-disp-msg 'on)
+    (when (wl-summary-set-message-buffer-or-redisplay 'ignore-original)
+      (set-buffer cur-buf)
+      (wl-message-next-page))))
 
 (defun wl-summary-prev-page ()
   (interactive)
-  (wl-message-prev-page))
+  (let ((cur-buf (current-buffer)))
+    (wl-summary-toggle-disp-msg 'on)
+    (when (wl-summary-set-message-buffer-or-redisplay 'ignore-original)
+      (set-buffer cur-buf)
+      (wl-message-prev-page))))
 
 (defsubst wl-summary-no-mime-p (folder)
   (wl-string-match-member (elmo-folder-name-internal folder)
@@ -4629,7 +4593,7 @@ Return t if message exists."
          (set-buffer wl-message-buffer)
          t)
       (if (wl-summary-no-mime-p folder)
-         (wl-summary-redisplay-no-mime folder number)
+         (wl-summary-redisplay-no-mime-internal folder number)
        (wl-summary-redisplay-internal folder number))
       (when (buffer-live-p wl-message-buffer)
        (set-buffer wl-message-buffer))
@@ -4910,9 +4874,8 @@ Reply to author if invoked with ARG."
 (defun wl-summary-write ()
   "Write a new draft from Summary."
   (interactive)
-  (wl-draft nil nil nil nil nil
-           nil nil nil nil nil nil (current-buffer)
-           nil (wl-summary-buffer-folder-name))
+  (wl-draft (list (cons 'To ""))
+           nil nil nil nil (wl-summary-buffer-folder-name))
   (run-hooks 'wl-mail-setup-hook)
   (mail-position-on-field "To"))
 
@@ -4938,20 +4901,19 @@ Use function list is `wl-summary-write-current-folder-functions'."
          (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")))
+    (if (null guess-func)
+       (wl-summary-write)
+      (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 (list (cons 'To (nth 0 guess-list))
+                     (cons 'Cc (nth 1 guess-list))
+                     (cons 'Newsgroups (nth 2 guess-list)))
+               nil nil nil nil folder)
+      (run-hooks 'wl-mail-setup-hook)
+      (mail-position-on-field "Subject"))))
 
 (defun wl-summary-forward (&optional without-setup-hook)
   ""
@@ -5003,76 +4965,50 @@ Use function list is `wl-summary-write-current-folder-functions'."
       (if (wl-message-next-page)
          (wl-summary-down t)))))
 
-(defun wl-summary-prev (&optional interactive)
-  ""
-  (interactive)
+(defsubst wl-summary-cursor-move-surface (downward interactive)
   (if wl-summary-move-direction-toggle
-      (setq wl-summary-move-direction-downward nil))
-  (let ((skip-mark-regexp (mapconcat
-                          'regexp-quote
-                          wl-summary-skip-mark-list ""))
-       goto-next regex-list regex next-entity finfo)
-    (beginning-of-line)
+      (setq wl-summary-move-direction-downward downward))
+  (let ((start (point))
+       (skip-tmark-regexp (wl-regexp-opt wl-summary-skip-mark-list))
+       (skip t)
+       skip-pmark-regexp goto-next next-entity finfo)
     (if (elmo-folder-plugged-p wl-summary-buffer-elmo-folder)
-       (setq regex (format "^%s[^%s]"
-                           wl-summary-buffer-number-regexp
-                           skip-mark-regexp))
-      (setq regex (format "^%s[^%s]\\(%s\\|%s\\| \\)"
-                         wl-summary-buffer-number-regexp
-                         skip-mark-regexp
-                         (regexp-quote wl-summary-unread-cached-mark)
-                         (regexp-quote wl-summary-important-mark))))
-    (unless (re-search-backward regex nil t)
-      (setq goto-next t))
-    (beginning-of-line)
-    (if (not goto-next)
-       (progn
-         (if wl-summary-buffer-disp-msg
-             (wl-summary-redisplay)))
-      (if (or interactive (interactive-p))
-         (if wl-summary-buffer-prev-folder-function
-             (funcall wl-summary-buffer-prev-folder-function)
-           (when wl-auto-select-next
-             (setq next-entity (wl-summary-get-prev-folder))
-             (if next-entity
-                 (setq finfo (wl-folder-get-entity-info next-entity))))
-           (wl-ask-folder
-            '(lambda () (wl-summary-next-folder-or-exit next-entity))
-            (format
-             "No more messages. Type SPC to go to %s."
-             (wl-summary-entity-info-msg next-entity finfo))))))))
+       ()
+      (setq skip-pmark-regexp
+           (wl-regexp-opt (list " "
+                                wl-summary-unread-cached-mark
+                                wl-summary-important-mark))))
+    (while (and skip
+               (not (if downward (eobp) (bobp))))
+      (if downward
+         (forward-line 1)
+       (forward-line -1))
+      (setq skip (or (string-match skip-tmark-regexp 
+                                  (save-excursion
+                                    (wl-summary-temp-mark)))
+                    (and skip-pmark-regexp
+                         (not (string-match
+                               skip-pmark-regexp
+                               (save-excursion
+                                 (wl-summary-persistent-mark))))))))
+
+    (if (if downward (eobp) (and (bobp) skip)) (setq goto-next t))
+    (if (or (eobp) (and (bobp) skip))
+       (goto-char start))
 
-(defun wl-summary-next (&optional interactive)
-  ""
-  (interactive)
-  (if wl-summary-move-direction-toggle
-      (setq wl-summary-move-direction-downward t))
-  (let ((skip-mark-regexp (mapconcat
-                          'regexp-quote
-                          wl-summary-skip-mark-list ""))
-       goto-next regex regex-list next-entity finfo)
-    (end-of-line)
-    (if (elmo-folder-plugged-p wl-summary-buffer-elmo-folder)
-       (setq regex (format "^%s[^%s]"
-                           wl-summary-buffer-number-regexp
-                           skip-mark-regexp))
-      (setq regex (format "^%s[^%s]\\(%s\\|%s\\| \\)"
-                         wl-summary-buffer-number-regexp
-                         skip-mark-regexp
-                         (regexp-quote wl-summary-unread-cached-mark)
-                         (regexp-quote wl-summary-important-mark))))
-    (unless (re-search-forward regex nil t)
-      (forward-line 1)
-      (setq goto-next t))
     (beginning-of-line)
+
     (if (not goto-next)
        (if wl-summary-buffer-disp-msg
            (wl-summary-redisplay))
-      (if (or interactive (interactive-p))
+      (if interactive
          (if wl-summary-buffer-next-folder-function
              (funcall wl-summary-buffer-next-folder-function)
            (when wl-auto-select-next
-             (setq next-entity (wl-summary-get-next-folder))
+             (setq next-entity
+                   (if downward
+                       (wl-summary-get-next-folder)
+                     (wl-summary-get-prev-folder)))
              (if next-entity
                  (setq finfo (wl-folder-get-entity-info next-entity))))
            (wl-ask-folder
@@ -5081,6 +5017,14 @@ Use function list is `wl-summary-write-current-folder-functions'."
              "No more messages. Type SPC to go to %s."
              (wl-summary-entity-info-msg next-entity finfo))))))))
 
+(defun wl-summary-prev (&optional interactive)
+  (interactive)
+  (wl-summary-cursor-move-surface nil (or interactive (interactive-p))))
+
+(defun wl-summary-next (&optional interactive)
+  (interactive)
+  (wl-summary-cursor-move-surface t (or interactive (interactive-p))))
+
 (defun wl-summary-up (&optional interactive skip-no-unread)
   ""
   (interactive)
@@ -5211,7 +5155,7 @@ Use function list is `wl-summary-write-current-folder-functions'."
                  (delete-window fld-win)))
          (setq wl-current-summary-buffer (current-buffer))
          (wl-summary-mark-as-read
-          nil
+          num
           ;; not fetched, then change server-mark.
           (if (wl-message-redisplay folder num 'mime
                                     (or force-reload
@@ -5226,24 +5170,32 @@ Use function list is `wl-summary-write-current-folder-functions'."
                    wl-summary-buffer-elmo-folder))
                  (elmo-folder-plugged-p
                   wl-summary-buffer-elmo-folder))
-                'leave))
-          t ; displayed
-          nil
-          'cached ; cached by reading.
-          )
+                'leave)))
          (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-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."))))
 
-(defun wl-summary-redisplay-no-mime (&optional folder number)
-  (interactive)
+(defun wl-summary-redisplay-no-mime (&optional ask-coding)
+  "Display message without MIME decoding.
+If ASK-CODING is non-nil, coding-system for the message is asked."
+  (interactive "P")
+  (let ((elmo-mime-display-as-is-coding-system
+        (if ask-coding
+            (or (read-coding-system "Coding system: ")
+                elmo-mime-display-as-is-coding-system)
+          elmo-mime-display-as-is-coding-system)))
+    (wl-summary-redisplay-no-mime-internal)))
+
+(defun wl-summary-redisplay-no-mime-internal (&optional folder number)
   (let* ((fld (or folder wl-summary-buffer-elmo-folder))
         (num (or number (wl-summary-message-number)))
         wl-break-pages)
@@ -5256,11 +5208,11 @@ Use function list is `wl-summary-write-current-folder-functions'."
          (wl-message-redisplay fld num 'as-is
                                (string= (elmo-folder-name-internal fld)
                                         wl-draft-folder))
-         (wl-summary-mark-as-read nil nil t)
+         (wl-summary-mark-as-read num)
          (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))
@@ -5283,17 +5235,18 @@ Use function list is `wl-summary-write-current-folder-functions'."
          (if (wl-message-redisplay fld num 'all-header
                                    (string= (elmo-folder-name-internal fld)
                                             wl-draft-folder))
-             (wl-summary-mark-as-read nil nil t))
+             (wl-summary-mark-as-read num))
          (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))
       (message "No message to display."))))
 
 (defun wl-summary-jump-to-current-message ()
+  "Jump into Message buffer."
   (interactive)
   (let (message-buf message-win)
     (if (setq message-buf wl-message-buffer)
@@ -5384,15 +5337,16 @@ Use function list is `wl-summary-write-current-folder-functions'."
                      "Supersedes: " message-id "\n"
                      (and followup-to
                           (concat "Followup-To: " followup-to "\n")))))
-    (if message-buf (set-buffer message-buf))
+       (if message-buf (set-buffer message-buf))
        (wl-draft-edit-string (buffer-substring (point-min) (point-max)))))))
 
 (defun wl-summary-save (&optional arg wl-save-dir)
+  "Save current message to disk."
   (interactive)
   (let ((filename)
        (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
@@ -5419,7 +5373,8 @@ 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)
@@ -5445,16 +5400,33 @@ Use function list is `wl-summary-write-current-folder-functions'."
     (setq command (read-string "Shell command on message: "
                               wl-summary-shell-command-last))
     (if (y-or-n-p "Send this message to pipe? ")
-       (save-excursion
-         (wl-summary-set-message-buffer-or-redisplay)
-         (set-buffer (wl-message-get-original-buffer))
-         (if (string= command "")
-             (setq command wl-summary-shell-command-last))
-         (goto-char (point-min)) ; perhaps this line won't be necessary
-         (if prefix
-             (search-forward "\n\n"))
-         (shell-command-on-region (point) (point-max) command nil)
-         (setq wl-summary-shell-command-last command)))))
+       (wl-summary-pipe-message-subr prefix command))))
+
+(defun wl-summary-target-mark-pipe (prefix command)
+  "Send each marked messages via pipe."
+  (interactive (list current-prefix-arg nil))
+  (if (null wl-summary-buffer-target-mark-list)
+      (message "No marked message.")
+    (setq command (read-string "Shell command on each marked message: "
+                              wl-summary-shell-command-last))
+    (when (y-or-n-p "Send each marked message to pipe? ")
+      (while (car wl-summary-buffer-target-mark-list)
+       (let ((num (car wl-summary-buffer-target-mark-list)))
+         (wl-thread-jump-to-msg num)
+         (wl-summary-pipe-message-subr prefix command)
+         (wl-summary-unmark num))))))
+
+(defun wl-summary-pipe-message-subr (prefix command)
+  (save-excursion
+    (wl-summary-set-message-buffer-or-redisplay)
+    (set-buffer (wl-message-get-original-buffer))
+    (if (string= command "")
+       (setq command wl-summary-shell-command-last))
+    (goto-char (point-min)) ; perhaps this line won't be necessary
+    (if prefix
+       (search-forward "\n\n"))
+    (shell-command-on-region (point) (point-max) command nil)
+    (setq wl-summary-shell-command-last command)))
 
 (defun wl-summary-print-message (&optional arg)
   (interactive "P")
@@ -5473,6 +5445,7 @@ Use function list is `wl-summary-write-current-folder-functions'."
        (message "")))))
 
 (defun wl-summary-print-message-with-ps-print (&optional filename)
+  "Print message via ps-print."
   (interactive)
   (if (null (wl-summary-message-number))
       (message "No message.")
@@ -5522,6 +5495,17 @@ Use function list is `wl-summary-write-current-folder-functions'."
 (if (featurep 'ps-print) ; ps-print is available.
     (fset 'wl-summary-print-message 'wl-summary-print-message-with-ps-print))
 
+(defun wl-summary-target-mark-print ()
+  (interactive)
+  (if (null wl-summary-buffer-target-mark-list)
+      (message "No marked message.")
+    (when (y-or-n-p "Print all marked messages. OK? ")
+      (while (car wl-summary-buffer-target-mark-list)
+       (let ((num (car wl-summary-buffer-target-mark-list)))
+         (wl-thread-jump-to-msg num)
+         (wl-summary-print-message)
+         (wl-summary-unmark num))))))
+
 (defun wl-summary-folder-info-update ()
   (let ((folder (elmo-string (wl-summary-buffer-folder-name)))
        (num-db (elmo-msgdb-get-number-alist
@@ -5576,15 +5560,15 @@ 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? "