* wl-address.el (wl-address-specials-regexp): Eliminated.

* wl-address.el (wl-address-specials-regexp): Eliminated.
(wl-address-quote-specials): Rewrite.

* mmimap.el (mime-imap-entity::requested): New slot.
(mime-imap-location-fetch-entity-p): New generic function.
(mime-decode-parameters): Define using `defun-maybe'.
(mmimap-make-mime-entity): Use `make-mime-content-type' to make
content-type structure.
(mime-entity-body): Return empty body if
`mime-imap-location-fetch-entity-p' returns nil in the first request.

* elmo.el (elmo-message-displaying): New variable.

* elmo-mime.el (elmo-mime-message-display): Bind
elmo-message-displaying as t.

* elmo-imap4.el (mime-imap-location-fetch-entity-p): Define.