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+;;; mcs-ltn1.el --- MIME charset implementation for Emacs 19
+;;;                 and XEmacs without MULE
+
+;; Copyright (C) 1995,1996,1997,1998 MORIOKA Tomohiko
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Keywords: emulation, compatibility, Mule
+
+;; This file is part of APEL (A Portable Emacs Library).
+
+;; 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:
+
+(defvar charsets-mime-charset-alist
+  '(((ascii) . us-ascii)))
+
+(defvar default-mime-charset 'iso-8859-1)
+
+(defun mime-charset-to-coding-system (charset)
+  (if (stringp charset)
+      (setq charset (intern (downcase charset)))
+    )
+  (if (memq charset (list 'us-ascii default-mime-charset))
+      charset
+    ))
+
+(defun detect-mime-charset-region (start end)
+  "Return MIME charset for region between START and END."
+  (if (save-excursion
+	(goto-char start)
+	(re-search-forward "[\200-\377]" end t))
+      default-mime-charset
+    'us-ascii))
+
+(defun encode-mime-charset-region (start end charset)
+  "Encode the text between START and END as MIME CHARSET."
+  )
+
+(defun decode-mime-charset-region (start end charset &optional lbt)
+  "Decode the text between START and END as MIME CHARSET."
+  (cond ((eq lbt 'CRLF)
+	 (save-excursion
+	   (save-restriction
+	     (narrow-to-region start end)
+	     (goto-char (point-min))
+	     (while (search-forward "\r\n" nil t)
+	       (replace-match "\n"))
+	     ))
+	 )))
+
+(defun encode-mime-charset-string (string charset)
+  "Encode the STRING as MIME CHARSET."
+  string)
+
+(defun decode-mime-charset-string (string charset &optional lbt)
+  "Decode the STRING as MIME CHARSET."
+  (if lbt
+      (with-temp-buffer
+	(insert string)
+	(decode-mime-charset-region (point-min)(point-max) charset lbt)
+	(buffer-string))
+    string))
+
+(defalias 'write-region-as-mime-charset 'write-region)
+
+
+;;; @ end
+;;;
+
+(provide 'mcs-ltn1)
+
+;;; mcs-ltn1.el ends here