(gnus-large-newsgroup): Mention gnus-large-ephemeral-newsgroup.

[gnus] / lisp / rfc2047.el

diff --git a/lisp/rfc2047.el b/lisp/rfc2047.el
index 78c03b4..8a71539 100644 (file)
--- a/lisp/rfc2047.el
+++ b/lisp/rfc2047.el
@@ -1,7 +1,7 @@
 ;;; rfc2047.el --- functions for encoding and decoding rfc2047 messages
 
 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-;;   2007, 2008, 2009  Free Software Foundation, Inc.
+;;   2007, 2008, 2009, 2010  Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;     MORIOKA Tomohiko <morioka@jaist.ac.jp>
@@ -31,7 +31,6 @@
   (require 'cl))
 (defvar message-posting-charset)
 
-(require 'qp)
 (require 'mm-util)
 (require 'ietf-drums)
 ;; Fixme: Avoid this (used for mail-parse-charset) mm dependence on gnus.
@@ -343,8 +342,8 @@ The buffer may be narrowed."
 (defconst rfc2047-syntax-table
   ;; (make-char-table 'syntax-table '(2)) only works in Emacs.
   (let ((table (make-syntax-table)))
-    ;; The following is done to work for setting all elements of the table
-    ;; in Emacs 21-23 and XEmacs; it appears to be the cleanest way.
+    ;; The following is done to work for setting all elements of the table;
+    ;; it appears to be the cleanest way.
     ;; Play safe and don't assume the form of the word syntax entry --
     ;; copy it from ?a.
     (if (fboundp 'set-char-table-range)        ; Emacs
@@ -428,7 +427,7 @@ Dynamically bind `rfc2047-encoding-type' to change that."
                      ;; since encoded words can't occur in quotes.
                      (progn
                        (goto-char end)
-                       (delete-backward-char 1)
+                       (delete-char -1)
                        (goto-char start)
                        (delete-char 1)
                        (when last-encoded
@@ -656,6 +655,9 @@ should not change this value.")
 Point moves to the end of the region."
   (let ((mime-charset (or (mm-find-mime-charset-region b e) (list 'us-ascii)))
        cs encoding tail crest eword)
+    ;; Use utf-8 as a last resort if determining charset of text fails.
+    (if (memq nil mime-charset)
+       (setq mime-charset (list 'utf-8)))
     (cond ((> (length mime-charset) 1)
           (error "Can't rfc2047-encode `%s'"
                  (buffer-substring-no-properties b e)))
@@ -827,6 +829,8 @@ Point moves to the end of the region."
   "Base64-encode the header contained in STRING."
   (base64-encode-string string t))
 
+(autoload 'quoted-printable-encode-region "qp")
+
 (defun rfc2047-q-encode-string (string)
   "Quoted-printable-encode the header in STRING."
   (mm-with-unibyte-buffer
@@ -847,18 +851,8 @@ Point moves to the end of the region."
 
 (defun rfc2047-encode-parameter (param value)
   "Return and PARAM=VALUE string encoded in the RFC2047-like style.
-This is a replacement for the `rfc2231-encode-string' function.
-
-When attaching files as MIME parts, we should use the RFC2231 encoding
-to specify the file names containing non-ASCII characters.  However,
-many mail softwares don't support it in practice and recipients won't
-be able to extract files with correct names.  Instead, the RFC2047-like
-encoding is acceptable generally.  This function provides the very
-RFC2047-like encoding, resigning to such a regrettable trend.  To use
-it, put the following line in your ~/.gnus.el file:
-
-\(defalias 'mail-header-encode-parameter 'rfc2047-encode-parameter)
-"
+This is a substitution for the `rfc2231-encode-string' function, that
+is the standard but many mailers don't support it."
   (let ((rfc2047-encoding-type 'mime)
        (rfc2047-encode-max-chars nil))
     (rfc2045-encode-string param (rfc2047-encode-string value))))
@@ -896,7 +890,7 @@ them.")
                  (goto-char beg)
                  (while (search-forward "\\" nil 'move)
                    (unless (memq (char-after) '(?\"))
-                     (delete-backward-char 1))
+                     (delete-char -1))
                    (forward-char)))
                (forward-char))
            (error
@@ -929,6 +923,8 @@ only be used for decoding, not for encoding."
        'raw-text
       cs)))
 
+(autoload 'quoted-printable-decode-string "qp")
+
 (defun rfc2047-decode-encoded-words (words)
   "Decode successive encoded-words in WORDS and return a decoded string.
 Each element of WORDS looks like (CHARSET ENCODING ENCODED-TEXT
@@ -1169,5 +1165,4 @@ strings are stripped."
 
 (provide 'rfc2047)
 
-;; arch-tag: a07fe3d4-22b5-4c4a-bd89-b1f82d5d36f6
 ;;; rfc2047.el ends here