* wl-draft.el (wl-draft-reply): Set default position.
[elisp/wanderlust.git] / wl / wl-summary.el
index ea0cebe..7f0b615 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-weekday-name-lang  nil)
 (defvar wl-summary-buffer-thread-indent-set-alist  nil)
-(defvar wl-summary-buffer-view 'thread)
+(defvar wl-summary-buffer-view 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)
+  "Instance of `wl-summary-from-function'.
+Ordinarily returns the sender name. Returns recipient names if (1)
+summary's folder name matches with `wl-summary-showto-folder-regexp'
+and (2) sender address is yours.
+
+See also variable `wl-use-petname'."
   (let (retval tos ng)
     (unless
        (and (eq major-mode 'wl-summary-mode)
                           (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]
   (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 "a"    'wl-summary-reply)
   (define-key wl-summary-mode-map "A"    'wl-summary-reply-with-citation)
   (define-key wl-summary-mode-map "p"    'wl-summary-prev)
   (define-key wl-summary-mode-map "N"    'wl-summary-down)
   (define-key wl-summary-mode-map "P"    'wl-summary-up)
-;;;(define-key wl-summary-mode-map "w"    'wl-draft)
   (define-key wl-summary-mode-map "w"    'wl-summary-write)
   (define-key wl-summary-mode-map "W"    'wl-summary-write-current-folder)
-;;;(define-key wl-summary-mode-map "e"     'wl-draft-open-file)
   (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 "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 "d"    'wl-summary-delete)
   (define-key wl-summary-mode-map "u"    'wl-summary-unmark)
   (define-key wl-summary-mode-map "U"    'wl-summary-unmark-all)
+  (define-key wl-summary-mode-map "D"    'wl-summary-erase)
 
   ;; thread commands
   (define-key wl-summary-mode-map "t"  (make-sparse-keymap))
   (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)
+  (define-key wl-summary-mode-map "mD"   'wl-summary-target-mark-erase)
 
   ;; region commands
   (define-key wl-summary-mode-map "r"    (make-sparse-keymap))
 (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))
-    (cons 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.
@@ -596,16 +610,15 @@ If optional USE-CACHE is non-nil, use cache if exists."
   "Re-edit current message.
 If ARG is non-nil, Supersedes message"
   (interactive "P")
+  (wl-summary-toggle-disp-msg 'off)
   (if arg
       (wl-summary-supersedes-message)
     (if (string= (wl-summary-buffer-folder-name) wl-draft-folder)
-       (if (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"))
-             (delete-other-windows)))
+       (when (wl-summary-message-number)
+         (wl-draft-reedit (wl-summary-message-number))
+         (if (wl-message-news-p)
+             (mail-position-on-field "Newsgroups")
+           (mail-position-on-field "To")))
       (wl-draft-edit-string (wl-summary-message-string)))))
 
 (defun wl-summary-resend-bounced-mail ()
@@ -614,6 +627,7 @@ This only makes sense if the current message is a bounce message which
 contains some mail you have written but has been bounced back to
 you."
   (interactive)
+  (wl-summary-toggle-disp-msg 'off)
   (save-excursion
     (wl-summary-set-message-buffer-or-redisplay)
     (set-buffer (wl-message-get-original-buffer))
@@ -632,7 +646,7 @@ 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))
@@ -695,14 +709,39 @@ 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
@@ -717,6 +756,23 @@ 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)
@@ -744,13 +800,6 @@ 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 ()
@@ -772,13 +821,17 @@ 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))
@@ -814,6 +867,60 @@ 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 delivered-to mailing-list)
+    (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)))))
+    (and (setq delivered-to
+              (elmo-msgdb-overview-entity-get-extra-field
+               entity "delivered-to"))
+        (string-match "^mailing list \\([^@]+\\)@" delivered-to)
+        (or ml-name (setq ml-name (match-string 1 delivered-to))))
+    (and (setq mailing-list
+              (elmo-msgdb-overview-entity-get-extra-field
+               entity "mailing-list"))
+        (string-match "\\(^\\|; \\)contact \\([^@]+\\)-[^-@]+@" mailing-list)  ; *-help@, *-owner@, etc.
+        (or ml-name (setq ml-name (match-string 2 mailing-list))))
+    (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 (car list-info-x) (car list-info-y))
+       (if (equal (cdr list-info-x) (cdr list-info-y))
+           (wl-summary-overview-entity-compare-by-date x y)
+         (< (or (cdr list-info-x) 0)
+            (or (cdr list-info-y) 0)))
+      (string< (or (car list-info-x) "")
+              (or (car list-info-y) "")))))
+
 (defun wl-summary-sort-by-date ()
   (interactive)
   (wl-summary-rescan "date"))
@@ -826,6 +933,9 @@ 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."
@@ -834,7 +944,6 @@ 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
@@ -844,7 +953,6 @@ 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)
@@ -869,11 +977,9 @@ 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))
@@ -888,8 +994,7 @@ 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)
@@ -908,9 +1013,7 @@ 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)
@@ -980,7 +1083,8 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
   (if (or wl-summary-buffer-refile-list
          wl-summary-buffer-copy-list
          wl-summary-buffer-delete-list)
-      (if (y-or-n-p "Marks remain to be executed.  Execute them? ")
+      (if (y-or-n-p (format "Execute remaining marks in %s? "
+                           (wl-summary-buffer-folder-name)))
          (progn
            (wl-summary-exec)
            (if (or wl-summary-buffer-refile-list
@@ -1019,7 +1123,7 @@ Entering Folder mode calls the value of `wl-summary-mode-hook'."
   (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.")))
+  (if (interactive-p) (message "Saving summary status...done")))
 
 (defun wl-summary-force-exit ()
   "Exit current summary.  Buffer is deleted even the buffer is sticky."
@@ -1094,6 +1198,11 @@ 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))
@@ -1112,8 +1221,7 @@ 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)
@@ -1279,17 +1387,18 @@ 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)
       (unwind-protect
@@ -1306,8 +1415,8 @@ If ARG is non-nil, checking is omitted."
                         "[ "
                         (save-match-data
                           (wl-set-string-width
-                           wl-summary-from-width
-                           (wl-summary-from-func-internal
+                           17
+                           (funcall wl-summary-from-function
                             (eword-decode-string
                              (elmo-delete-char
                               ?\"
@@ -1316,7 +1425,7 @@ If ARG is non-nil, checking is omitted."
                                "??")))))) " ]")
                        size))))
              (message ""))             ; flush.
-           (setq mark (cadr (assq number mark-alist)))
+           (setq mark (elmo-msgdb-get-mark msgdb number))
            (if force-read
                (save-excursion
                  (save-match-data
@@ -1339,10 +1448,8 @@ If ARG is non-nil, checking is omitted."
                           ((string= mark wl-summary-read-uncached-mark)
                            nil)
                           (t mark)))
-                   (setq mark-alist (elmo-msgdb-mark-set
-                                     mark-alist number new-mark))
+                   (elmo-msgdb-set-mark msgdb 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
@@ -1371,27 +1478,25 @@ 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...")
@@ -1424,36 +1529,17 @@ 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
@@ -1480,41 +1566,21 @@ 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
@@ -1524,19 +1590,18 @@ 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)
@@ -1569,7 +1634,7 @@ 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)
@@ -1600,7 +1665,7 @@ 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 ()
@@ -1610,9 +1675,6 @@ 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)
@@ -1626,36 +1688,34 @@ 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)
@@ -1671,42 +1731,34 @@ 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."
@@ -1715,7 +1767,6 @@ 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)
@@ -1723,11 +1774,10 @@ 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
@@ -1743,84 +1793,19 @@ 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
@@ -1840,10 +1825,9 @@ 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)))))
@@ -1859,61 +1843,26 @@ 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)
@@ -1934,56 +1883,29 @@ If ARG is non-nil, checking is omitted."
                   (error "Trash Folder is not created"))))
               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))
-
 (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)
@@ -1992,31 +1914,18 @@ 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)))
@@ -2034,7 +1943,7 @@ 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))))
@@ -2052,11 +1961,11 @@ If ARG is non-nil, checking is omitted."
         (inhibit-read-only t)
         (buffer-read-only nil)
         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
@@ -2068,7 +1977,7 @@ 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
@@ -2095,7 +2004,7 @@ 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))
@@ -2103,20 +2012,20 @@ 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
@@ -2139,7 +2048,8 @@ 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))))
@@ -2155,7 +2065,6 @@ 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
@@ -2196,13 +2105,10 @@ If ARG is non-nil, checking is omitted."
       (wl-folder-set-folder-updated
        (elmo-folder-name-internal folder)
        (list 0
-            (let ((pair (wl-summary-count-unread
-                         (elmo-msgdb-get-mark-alist
-                          (elmo-folder-msgdb folder)))))
+            (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))
@@ -2230,18 +2136,16 @@ 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))))
@@ -2252,23 +2156,19 @@ 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)))
 
@@ -2293,19 +2193,11 @@ 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))
@@ -2432,13 +2324,15 @@ 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
@@ -2467,8 +2361,7 @@ 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)
@@ -2498,9 +2391,9 @@ 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)
@@ -2575,10 +2468,15 @@ If ARG, without confirm."
                     default-enable-multibyte-characters)
                    (decode-mime-charset-region
                     (point-min)(point-max)
-                    wl-summary-buffer-mime-charset))
-                 (when (file-exists-p view)
+                    wl-summary-buffer-mime-charset 'LF))
+                 (if (file-exists-p view)
+                     (setq wl-summary-buffer-view
+                           (wl-summary-load-file-object view))
                    (setq wl-summary-buffer-view
-                         (wl-summary-load-file-object view)))
+                         (or (wl-get-assoc-list-value
+                              wl-summary-default-view-alist
+                              (elmo-folder-name-internal folder))
+                             wl-summary-default-view)))
                  (wl-thread-resume-entity folder)
                  (wl-summary-open-folder folder))
              (setq wl-summary-buffer-view
@@ -2587,12 +2485,15 @@ 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)
@@ -2682,31 +2583,18 @@ 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
@@ -2740,22 +2628,19 @@ 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))
@@ -2764,8 +2649,8 @@ 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))
@@ -2787,7 +2672,7 @@ If ARG, without confirm."
       (setq this (funcall func ov))
       (and this (setq this (std11-unfold-string this)))
       (if (equal last this)
-         (wl-append alike (list ov))
+         (setq alike (cons ov alike))
        (when last
          (wl-summary-put-alike alike)
          (insert last ?\n))
@@ -2807,137 +2692,159 @@ If ARG, without confirm."
   (let ((summary-buf (current-buffer))
        (buf (get-buffer-create wl-summary-search-buf-name))
        (folder-name (wl-summary-buffer-folder-name))
-       match founds found-entity)
+       match founds cur result)
     (with-current-buffer buf
       (let ((case-fold-search t))
        (when (or (not (string= wl-summary-search-buf-folder-name folder-name))
                  (zerop (buffer-size)))
          (setq wl-summary-search-buf-folder-name folder-name)
+         (message "Creating subject cache...")
          (wl-summary-insert-headers
           overview
           (function
            (lambda (x)
-             (wl-summary-subject-filter-func-internal
-              (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)))
+             (funcall wl-summary-subject-filter-function
+                      (elmo-msgdb-overview-entity-get-subject-no-decode x))))
+          t)
+         (message "Creating subject cache...done"))
+       (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))
-       (while (and (not founds)
-                   (not (= (point) (point-max)))
-                   (search-forward match nil t))
+       (goto-char (point-max))
+       (while (and (null result)
+                   (not (= (point) (point-min)))
+                   (search-backward match nil t))
          ;; check exactly match
-         (when (and (eolp)
-                    (= (point-at-bol)
-                       (match-beginning 0)))
-           (setq found-entity (wl-summary-get-alike))
-           (if (and found-entity
-                    ;; Is founded entity myself or children?
-                    (not (string=
-                          (elmo-msgdb-overview-entity-get-id entity)
-                          (elmo-msgdb-overview-entity-get-id
-                           (car found-entity))))
-                    (with-current-buffer summary-buf
+         (when (and (bolp) (= (point-at-eol)(match-end 0)))
+           (setq founds (wl-summary-get-alike))
+           (with-current-buffer summary-buf
+             (while founds
+               (when (and
+                      ;; the first element of found-entity list exists on
+                      ;; thread tree.
+                      (wl-thread-get-entity
+                       (elmo-msgdb-overview-entity-get-number
+                        (car founds)))
+                      ;; message id is not same as myself.
+                      (not (string=
+                            (elmo-msgdb-overview-entity-get-id entity)
+                            (elmo-msgdb-overview-entity-get-id (car founds))))
+                      ;; not a descendant.
                       (not (wl-thread-descendant-p
                             (elmo-msgdb-overview-entity-get-number entity)
                             (elmo-msgdb-overview-entity-get-number
-                             (car found-entity))))))
-               ;; return matching entity
-               (setq founds found-entity))))
-       (if founds
-           (car founds))))))
+                             (car founds)))))
+                 (setq result (car founds)
+                       founds nil))
+               (setq founds (cdr founds))))))
+       result))))
 
-(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)
+        (depth 0) relatives anumber
+        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))
+      (setq cur entity)
+      ;; If thread loop detected, set parent as nil.
+      (while cur
+       (setq anumber
+             (elmo-msgdb-overview-entity-get-number
+              (setq cur (elmo-msgdb-get-parent-entity cur msgdb))))
+       (if (memq anumber relatives)
+           (setq parent-number nil
+                 cur nil))
+       (setq relatives (cons
+                        (elmo-msgdb-overview-entity-get-number cur)
+                        relatives)))
+      (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))
+        (number (elmo-msgdb-overview-entity-get-number entity))
         (parent-number (elmo-msgdb-overview-entity-get-number parent-entity))
-        summary-line msg subject-differ)
+        insert-line)
     (cond
      ((or (not parent-id)
          (string= this-id parent-id))
       (goto-char (point-max))
-      (beginning-of-line))
+      (beginning-of-line)
+      (setq insert-line t))
      ;; 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-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))))))
+     ((wl-summary-jump-to-msg parent-number)
+      (wl-thread-goto-bottom-of-sub-thread)
+      (setq insert-line t)))
+    (when insert-line
+      (let (buffer-read-only)
+       (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
@@ -2949,13 +2856,12 @@ 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))
@@ -2964,22 +2870,18 @@ 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)
@@ -2993,13 +2895,9 @@ 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))
@@ -3014,7 +2912,7 @@ 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))
@@ -3050,7 +2948,8 @@ 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))
@@ -3098,12 +2997,10 @@ 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)
@@ -3113,7 +3010,7 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
 
 (defun wl-summary-exec-region (beg end)
   (interactive "r")
-  (message "Collecting marks ...")
+  (message "Collecting marks...")
   (save-excursion
     (goto-char beg)
     (beginning-of-line)
@@ -3142,7 +3039,7 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
            refile-len
            dst-msgs                    ; loop counter
            result)
-       (message "Executing ...")
+       (message "Executing...")
        (while dels
          (when (not (assq (car dels) wl-summary-buffer-refile-list))
            (wl-append wl-summary-buffer-refile-list
@@ -3233,7 +3130,7 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                           wl-message-buffer-cur-number)))
          (wl-summary-toggle-disp-msg 'off))
        (set-buffer-modified-p nil)
-       (message (concat "Executing ... done"
+       (message (concat "Executing...done"
                         (if (> refile-failures 0)
                             (format " (%d refiling failed)" refile-failures)
                           "")
@@ -3242,6 +3139,45 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
                           "")
                         "."))))))
 
+(defun wl-summary-erase (&optional number)
+  "Erase message actually, without moving it to trash."
+  (interactive)
+  (if (elmo-folder-writable-p wl-summary-buffer-elmo-folder)
+      (let* ((buffer-num (wl-summary-message-number))
+            (msg-num (or number buffer-num)))
+       (if (null msg-num)
+           (message "No message.")
+         (let* ((msgdb (wl-summary-buffer-msgdb))
+                (entity (elmo-msgdb-overview-get-entity msg-num msgdb))
+                (subject (elmo-delete-char
+                          ?\n (or (elmo-msgdb-overview-entity-get-subject
+                                   entity)
+                                  wl-summary-no-subject-message))))
+           (when (yes-or-no-p
+                  (format "Erase \"%s\" without moving it to trash? "
+                          (truncate-string subject 30)))
+             (wl-summary-unmark msg-num)
+             (elmo-folder-delete-messages wl-summary-buffer-elmo-folder
+                                          (list msg-num))
+             (wl-summary-delete-messages-on-buffer (list msg-num))
+             (save-excursion (wl-summary-sync nil "update"))))))
+    (message "Read-only folder.")))
+
+(defun wl-summary-target-mark-erase ()
+  (interactive)
+  (if (elmo-folder-writable-p wl-summary-buffer-elmo-folder)
+      (if (null wl-summary-buffer-target-mark-list)
+         (message "No marked message.")
+       (when (yes-or-no-p
+              "Erase all marked messages without moving them to trash? ")
+         (elmo-folder-delete-messages wl-summary-buffer-elmo-folder
+                                      wl-summary-buffer-target-mark-list)
+         (wl-summary-delete-messages-on-buffer
+          wl-summary-buffer-target-mark-list)
+         (setq wl-summary-buffer-target-mark-list nil)
+         (save-excursion (wl-summary-sync nil "update"))))
+    (message "Read-only folder.")))
+
 (defun wl-summary-read-folder (default &optional purpose ignore-error
                                no-create init)
   (let ((fld (completing-read
@@ -3279,7 +3215,10 @@ 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)
@@ -3287,7 +3226,8 @@ If optional argument NUMBER is specified, mark message specified by NUMBER."
        (setq c (+ c (char-width (following-char)))))
       (and (> c len) (setq folder (concat " " folder)))
       (setq rs (point))
-      (put-text-property rs re 'invisible t)
+      (when wl-summary-width
+         (put-text-property rs re 'invisible t))
       (put-text-property rs re 'wl-summary-destination t)
       (goto-char re)
       (wl-highlight-refile-destination-string folder)
@@ -3376,7 +3316,8 @@ 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.
@@ -3418,8 +3359,9 @@ 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'."
@@ -3430,51 +3372,44 @@ 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.")
@@ -3496,15 +3431,13 @@ 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 " ")))
@@ -3514,7 +3447,7 @@ 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)))))
 
@@ -3563,7 +3496,7 @@ 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))
 
@@ -3670,18 +3603,18 @@ 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."
@@ -3696,17 +3629,7 @@ 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)
   "Return the number of marked messages."
@@ -3786,7 +3709,7 @@ If ARG, exit virtual folder."
        (message "Unmarking..."))
       (while (not (eobp))
        (wl-summary-unmark)
-       (forward-line))
+       (forward-line 1))
       (unless no-msg
        (message "Unmarking...done"))
       (setq wl-summary-buffer-target-mark-list nil)
@@ -3813,38 +3736,42 @@ 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)))
@@ -3872,9 +3799,8 @@ 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))
@@ -3884,7 +3810,7 @@ If ARG, exit virtual folder."
          (setq skipped (cons (car mlist) skipped)))
        (setq mlist (cdr mlist)))
       (setq wl-summary-buffer-target-mark-list skipped)
-      (message "Prefetching... %d/%d message(s)." count length)
+      (message "Prefetching... %d/%d message(s)" count length)
       (set-buffer-modified-p nil))))
 
 (defun wl-summary-target-mark-refile-subr (copy-or-refile)
@@ -3892,34 +3818,34 @@ 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
@@ -3964,50 +3890,51 @@ 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))
@@ -4015,29 +3942,29 @@ 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))
@@ -4045,117 +3972,87 @@ 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-temporary-file-directory))
-         (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))
@@ -4175,13 +4072,12 @@ 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)))
@@ -4190,15 +4086,14 @@ 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
@@ -4217,23 +4112,18 @@ 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))
+             (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.
@@ -4241,132 +4131,169 @@ If ARG, exit virtual folder."
              (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)))
+      "")))
+
+(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-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-summary-from-width (length children-num) 2)
-            wl-summary-from-width)
-          (elmo-delete-char ?\n
-                            (wl-summary-from-func-internal
-                             (elmo-msgdb-overview-entity-get-from entity)))))
     (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-summary-subject-length-limit)
-                        (truncate-string subject wl-summary-subject-length-limit)
-                      subject)))))
+    (if (or no-parent
+           (null parent-subject)
+           (not (wl-summary-subject-equal
+                 subject parent-subject)))
+       (funcall wl-summary-subject-function 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 (car list-info)
+       (format (if (cdr list-info) "(%s %05d)" "(%s)")
+               (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"))
+       (case-fold-search t))
+    (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)
@@ -4465,6 +4392,7 @@ If ARG, exit virtual folder."
           (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.
@@ -4473,19 +4401,28 @@ 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)
-               (setq wl-summary-buffer-target-mark-list mark-list
+               (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-delete-all-temp-marks 'no-msg)
-               (encode-mime-charset-region
-                (point-min) (point-max) charset)
+                     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 (and wl-on-mule ; one in mcs-ltn1(apel<10.4) cannot take 2 arg.
+                         (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
@@ -4758,31 +4695,33 @@ Return t if message exists."
        draft-buf)
     (wl-summary-jump-to-msg (car mlist))
     (wl-summary-reply arg t)
-    (goto-char (point-max))
-    (setq start-point (point-marker))
-    (setq draft-buf (current-buffer))
-    (save-window-excursion
-      (while mlist
-       (set-buffer summary-buf)
-       (delete-other-windows)
-       (wl-summary-jump-to-msg (car mlist))
-       (wl-summary-redisplay)
-       (set-buffer draft-buf)
-       (goto-char (point-max))
-       (wl-draft-yank-original)
-       (setq mlist (cdr mlist)))
-      (goto-char start-point)
-      (save-excursion
-       (set-buffer summary-buf)
-       (wl-summary-delete-all-temp-marks)))
-    (run-hooks 'wl-mail-setup-hook)))
+    (save-excursion
+      (goto-char (point-max))
+      (setq start-point (point-marker))
+      (setq draft-buf (current-buffer))
+      (save-window-excursion
+       (while mlist
+         (set-buffer summary-buf)
+         (delete-other-windows)
+         (wl-summary-jump-to-msg (car mlist))
+         (wl-summary-redisplay)
+         (set-buffer draft-buf)
+         (goto-char (point-max))
+         (wl-draft-yank-original)
+         (setq mlist (cdr mlist)))
+       (goto-char start-point)
+       (save-excursion
+         (set-buffer summary-buf)
+         (wl-summary-delete-all-temp-marks)))
+      (run-hooks 'wl-mail-setup-hook))))
 
 (defun wl-summary-reply-with-citation (&optional arg)
   (interactive "P")
   (when (wl-summary-reply arg t)
-    (goto-char (point-max))
-    (wl-draft-yank-original)
-    (run-hooks 'wl-mail-setup-hook)))
+    (save-excursion
+      (goto-char (point-max))
+      (wl-draft-yank-original)
+      (run-hooks 'wl-mail-setup-hook))))
 
 (defun wl-summary-jump-to-msg-by-message-id (&optional id)
   (interactive)
@@ -4897,6 +4836,7 @@ Return t if message exists."
 (defun wl-summary-jump-to-parent-message (arg)
   (interactive "P")
   (let ((cur-buf (current-buffer))
+       (disp-msg wl-summary-buffer-disp-msg)
        (number (wl-summary-message-number))
        (regexp "\\(<[^<>]*>\\)[ \t]*$")
        (i -1) ;; xxx
@@ -4950,17 +4890,18 @@ Return t if message exists."
          (setq msg-id
                (if (null arg) (nth 0 ref-list) ;; previous
                  (if (<= arg i) (nth (1- arg) ref-list)
-                   (nth i ref-list)))))))
-      (set-buffer cur-buf)
+                   (nth i ref-list))))))
+       (set-buffer cur-buf)
+       (or disp-msg (wl-summary-toggle-disp-msg 'off)))
       (cond ((and (null msg-id) (null msg-num))
             (message "No parent message!")
             nil)
            ((and msg-id (wl-summary-jump-to-msg-by-message-id msg-id))
-            (wl-summary-redisplay)
+            (if wl-summary-buffer-disp-msg (wl-summary-redisplay))
             (message "Searching parent message...done")
             t)
            ((and msg-num (wl-summary-jump-to-msg msg-num))
-            (wl-summary-redisplay)
+            (if wl-summary-buffer-disp-msg (wl-summary-redisplay))
             (message "Searching parent message...done")
             t)
            (t ; failed.
@@ -4982,13 +4923,11 @@ Reply to author if invoked with ARG."
       (wl-message-select-buffer wl-message-buffer)
       (set-buffer mes-buf)
       (goto-char (point-min))
-      (unless wl-draft-use-frame
-       (split-window-vertically)
-       (other-window 1))
       (when (setq mes-buf (wl-message-get-original-buffer))
        (wl-draft-reply mes-buf arg summary-buf)
        (unless without-setup-hook
-         (run-hooks 'wl-mail-setup-hook)))
+         (save-excursion
+           (run-hooks 'wl-mail-setup-hook))))
       t)))
 
 (defun wl-summary-write ()
@@ -5056,9 +4995,6 @@ Use function list is `wl-summary-write-current-folder-functions'."
        (wl-summary-redisplay-internal folder number))
       (setq mes-buf wl-message-buffer)
       (wl-message-select-buffer mes-buf)
-      (unless wl-draft-use-frame
-       (split-window-vertically)
-       (other-window 1))
       ;; get original subject.
       (if summary-buf
          (save-excursion
@@ -5085,83 +5021,69 @@ 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 wl-summary-buffer-next-folder-function
-             (funcall wl-summary-buffer-next-folder-function)
+      (if interactive
+         (cond
+          ((and (not downward) wl-summary-buffer-prev-folder-function)
+           (funcall wl-summary-buffer-prev-folder-function))
+          ((and downward wl-summary-buffer-next-folder-function)
+           (funcall wl-summary-buffer-next-folder-function))
+          (t
            (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
             '(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))))))))
+             (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)
   ""
@@ -5293,7 +5215,7 @@ 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
@@ -5308,11 +5230,7 @@ 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))
@@ -5350,7 +5268,7 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
          (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))
@@ -5377,7 +5295,7 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
          (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))
@@ -5388,6 +5306,7 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
       (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)
@@ -5450,6 +5369,7 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
 (defun wl-summary-supersedes-message ()
   "Supersede current message."
   (interactive)
+  (wl-summary-toggle-disp-msg 'off)
   (let ((summary-buf (current-buffer))
        message-buf from)
     (wl-summary-set-message-buffer-or-redisplay)
@@ -5482,6 +5402,7 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
        (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)))
@@ -5540,16 +5461,33 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
     (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")
@@ -5568,6 +5506,7 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
        (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.")
@@ -5617,6 +5556,17 @@ If ASK-CODING is non-nil, coding-system for the message is asked."
 (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