T-gnus 6.15.24 revision 00.

[elisp/gnus.git-] / lisp / mm-encode.el

diff --git a/lisp/mm-encode.el b/lisp/mm-encode.el
index 98edfe8..770d106 100644 (file)
--- a/lisp/mm-encode.el
+++ b/lisp/mm-encode.el
@@ -1,5 +1,6 @@
 ;;; mm-encode.el --- Functions for encoding MIME things
-;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+;; 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>
@@ -30,16 +31,25 @@
 (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.
@@ -78,7 +88,7 @@ This variable should never be set directly, but bound before a call to
   "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)))
 
@@ -155,21 +165,24 @@ The encoding used is returned."
        (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)