;; Likewise base64 below.
(quoted-printable-encode-region (point-min) (point-max) t))
((eq encoding 'base64)
- (when (equal type "text/plain")
+ (when (string-match "\\`text/" type)
(goto-char (point-min))
(while (search-forward "\n" nil t)
(replace-match "\r\n" t t)))