abolish `emh-text-decode-buffer'.
(set-alist 'mime-raw-buffer-coding-system-alist
'mh-show-mode 'no-conversion)
-(fset 'emh-text-decode-buffer
- (symbol-function 'mime-text-decode-buffer))
-
(set-alist 'mime-text-decoder-alist
- 'mh-show-mode #'emh-text-decode-buffer)
+ 'mh-show-mode 'mime-text-decode-buffer)
(defvar emh-content-header-filter-hook
(if window-system