(message "No draft message exist.")
(if (string-match (concat "^" wl-draft-folder "/") mybuf)
(setq msg (cadr (memq
- (string-to-int (substring mybuf (match-end 0)))
+ (string-to-number (substring mybuf (match-end 0)))
msgs))))
(or msg (setq msg (car msgs)))
(if (setq buf (get-buffer (format "%s/%d" wl-draft-folder msg)))