--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/tm/gnus-charset.el	Mon Aug 13 08:46:56 2007 +0200
@@ -0,0 +1,150 @@
+;;; gnus-charset.el --- MIME charset extension for Gnus
+
+;; Copyright (C) 1995,1996 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Created: 1996/8/6
+;; Version:
+;;	$Id: gnus-charset.el,v 1.1.1.1 1996/12/18 03:55:31 steve Exp $
+;; Keywords: news, MIME, multimedia, multilingual, encoded-word
+
+;; This file is not part of GNU Emacs yet.
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU General Public License as
+;; published by the Free Software Foundation; either version 2, or (at
+;; your option) any later version.
+
+;; This program is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Code:
+
+(require 'gnus)
+
+(defvar gnus-is-red-gnus-or-later
+  (or (featurep 'gnus-load)
+      (module-installed-p 'gnus-sum)
+      ))
+
+
+;;; @ newsgroup default charset
+;;;
+
+(defvar gnus-newsgroup-default-charset-alist nil)
+
+(defun gnus-set-newsgroup-default-charset (newsgroup charset)
+  "Set CHARSET for the NEWSGROUP as default MIME charset."
+  (let* ((ng-regexp (concat "^" (regexp-quote newsgroup) "\\($\\|\\.\\)"))
+	 (pair (assoc ng-regexp gnus-newsgroup-default-charset-alist))
+	 )
+    (if pair
+	(setcdr pair charset)
+      (setq gnus-newsgroup-default-charset-alist
+	    (cons (cons ng-regexp charset)
+		  gnus-newsgroup-default-charset-alist))
+      )))
+
+
+;;; @ for mule (Multilingual support)
+;;;
+
+(cond
+ ((featurep 'mule)
+  (require 'emu)
+  (defvar nntp-open-binary-connection-function
+    (if gnus-is-red-gnus-or-later
+	;; maybe Red Gnus
+	(if (boundp 'nntp-open-connection-function)
+	    nntp-open-connection-function
+	  'nntp-open-network-stream)
+      ;; maybe Gnus 5.[01] or Gnus 5.[23]
+      (if (boundp 'nntp-open-server-function)
+	  nntp-open-server-function
+	'nntp-open-network-stream)
+      ))
+  (defun nntp-open-network-stream-with-no-code-conversion (&rest args)
+    (let ((proc (apply nntp-open-binary-connection-function args)))
+      (set-process-input-coding-system proc *noconv*)
+      proc))
+  (if gnus-is-red-gnus-or-later
+      (setq nntp-open-connection-function
+	    'nntp-open-network-stream-with-no-code-conversion)
+    (setq nntp-open-server-function
+	  'nntp-open-network-stream-with-no-code-conversion)
+    )
+  (call-after-loaded
+   'nnheader
+   (lambda ()
+     (defun nnheader-find-file-noselect (&rest args)
+       (as-binary-input-file
+        (let ((format-alist nil)
+              (auto-mode-alist (nnheader-auto-mode-alist))
+              (default-major-mode 'fundamental-mode)
+              (after-insert-file-functions nil))
+          (apply 'find-file-noselect args)))
+       )
+     ;; Red Gnus 0.67 or later
+     (defun nnheader-insert-file-contents
+       (filename &optional visit beg end replace)
+       (as-binary-input-file
+        (let ((format-alist nil)
+              (auto-mode-alist (nnheader-auto-mode-alist))
+              (default-major-mode 'fundamental-mode)
+              (after-insert-file-functions nil))
+          (insert-file-contents filename visit beg end replace))
+        ))
+     ;; alias for Old Gnus
+     (defalias 'nnheader-insert-file-contents-literally
+       'nnheader-insert-file-contents)
+     ))
+  (call-after-loaded
+   'nnmail
+   (lambda ()
+     (defun nnmail-find-file (file)
+       "Insert FILE in server buffer safely. [gnus-charset.el]"
+       (set-buffer nntp-server-buffer)
+       (erase-buffer)
+       (let ((format-alist nil)
+             (after-insert-file-functions   ; for jam-code-guess
+              (if (memq 'jam-code-guess-after-insert-file-function
+                        after-insert-file-functions)
+                  '(jam-code-guess-after-insert-file-function)))
+	     )
+	 (as-binary-input-file
+	  (condition-case ()
+	      (progn (insert-file-contents file) t)
+	    (file-error nil))
+	  )))
+     ))
+  (defun gnus-prepare-save-mail-function ()
+    (setq file-coding-system *noconv*
+	  coding-system-for-write 'no-conversion)
+    )
+  (add-hook 'nnmail-prepare-save-mail-hook
+	    'gnus-prepare-save-mail-function)
+  
+  (gnus-set-newsgroup-default-charset "alt.chinese" 'hz-gb-2312)
+  (gnus-set-newsgroup-default-charset "alt.chinese.text.big5" 'cn-big5)
+  (gnus-set-newsgroup-default-charset "fj"	'iso-2022-jp-2)
+  (gnus-set-newsgroup-default-charset "han"    	'euc-kr)
+  (gnus-set-newsgroup-default-charset "hk"	'cn-big5)
+  (gnus-set-newsgroup-default-charset "hkstar"	'cn-big5)
+  (gnus-set-newsgroup-default-charset "relcom"	'koi8-r)
+  (gnus-set-newsgroup-default-charset "tw"	'cn-big5)
+  ))
+
+
+;;; @ end
+;;;
+
+(provide 'gnus-charset)
+
+;;; gnus-charset.el ends here