`permanentflag' instead of `flags'.
        (elmo-folder-open): Ditto.
        (elmo-imap4-set-flag): Treat \Deleted flag as an exception.
+       (elmo-imap4-disuse-server-flag-mailbox-regexp): Abolish.
+       (elmo-folder-use-flag-p): Always return t.
 
 2003-10-06  Yuuichi Teranishi  <teranisi@gohome.org>
 
 
 ;;; Code:
 (eval-when-compile (require 'cl))
 
-(defvar elmo-imap4-disuse-server-flag-mailbox-regexp "^#mh" ; UW imapd
-  "Regexp to match IMAP4 mailbox names whose message flags on server should be ignored.
-\(Except `\\Deleted' flag\).")
-
 (defvar elmo-imap4-overview-fetch-chop-length 200
   "*Number of overviews to fetch in one request.")
 
   (elmo-imap4-folder-list-flagged folder 'answered))
 
 (luna-define-method elmo-folder-use-flag-p ((folder elmo-imap4-folder))
-  (not (string-match elmo-imap4-disuse-server-flag-mailbox-regexp
-                    (elmo-imap4-folder-mailbox-internal folder))))
+  t)
 
 (luna-define-method elmo-folder-list-subfolders ((folder elmo-imap4-folder)
                                                 &optional one-level)