-;;; mm-encode.el --- Functions for encoding MIME things
-;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+;;; mm-encode.el --- Functions for encoding MIME things
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
+;; Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
(eval-and-compile
(autoload 'mm-body-7-or-8 "mm-bodies"))
-(defvar mm-content-transfer-encoding-defaults
+(defcustom mm-content-transfer-encoding-defaults
'(("text/x-patch" 8bit)
("text/.*" qp-or-base64)
("message/rfc822" 8bit)
("application/emacs-lisp" 8bit)
+ ("application/x-emacs-lisp" 8bit)
("application/x-patch" 8bit)
(".*" base64))
"Alist of regexps that match MIME types and their encodings.
If the encoding is `qp-or-base64', then either quoted-printable
-or base64 will be used, depending on what is more efficient.")
+or base64 will be used, depending on what is more efficient."
+ :type '(repeat (list (regexp :tag "MIME type")
+ (choice :tag "encoding"
+ (const 7bit)
+ (const 8bit)
+ (const qp-or-base64)
+ (const quoted-printable)
+ (const base64))))
+ :group 'mime)
(defvar mm-use-ultra-safe-encoding nil
"If non-nil, use encodings aimed at Procrustean bed survival.
"Return a safer but similar encoding."
(cond
((memq encoding '(7bit 8bit quoted-printable)) 'quoted-printable)
- ;; The remaing encodings are binary and base64 (and perhaps some
+ ;; The remaining encodings are binary and base64 (and perhaps some
;; non-standard ones), which are both turned into base64.
(t 'base64)))
((functionp encoding)
(ignore-errors (funcall encoding (point-min) (point-max))))
(t
- (message "Unknown encoding %s; defaulting to 8bit" encoding))))
+ (message "Unknown encoding %s; treating it as 8bit" encoding))))
(defun mm-encode-buffer (type)
"Encode the buffer which contains data of TYPE.
(while rules
(when (string-match (caar rules) type)
(throw 'found
- (let ((encoding
+ (let ((encoding
(if (eq (cadr (car rules)) 'qp-or-base64)
(mm-qp-or-base64)
(cadr (car rules)))))
(pop rules)))))
(defun mm-qp-or-base64 ()
- (save-excursion
- (let ((limit (min (point-max) (+ 2000 (point-min))))
- (n8bit 0))
- (goto-char (point-min))
- (skip-chars-forward "\x20-\x7f\r\n\t" limit)
- (while (< (point) limit)
- (incf n8bit)
- (forward-char 1)
- (skip-chars-forward "\x20-\x7f\r\n\t" limit))
- (if (or (< (* 6 n8bit) (- limit (point-min)))
- ;; Don't base64, say, a short line with a single
- ;; non-ASCII char when splitting parts by charset.
- (= n8bit 1))
- 'quoted-printable
- 'base64))))
+ (if (equal mm-use-ultra-safe-encoding '(sign . "pgp"))
+ ;; perhaps not always accurate?
+ 'quoted-printable
+ (save-excursion
+ (let ((limit (min (point-max) (+ 2000 (point-min))))
+ (n8bit 0))
+ (goto-char (point-min))
+ (skip-chars-forward "\x20-\x7f\r\n\t" limit)
+ (while (< (point) limit)
+ (incf n8bit)
+ (forward-char 1)
+ (skip-chars-forward "\x20-\x7f\r\n\t" limit))
+ (if (or (< (* 6 n8bit) (- limit (point-min)))
+ ;; Don't base64, say, a short line with a single
+ ;; non-ASCII char when splitting parts by charset.
+ (= n8bit 1))
+ 'quoted-printable
+ 'base64)))))
(provide 'mm-encode)