From e168e5c74a9ca5910a7e959a82a57a603336cdeb Mon Sep 17 00:00:00 2001
From: tomo <tomo>
Date: Tue, 31 Dec 2002 08:17:47 +0000
Subject: [PATCH] (mcs-region-repertoire-p): New function for UTF-2000
 implementations. (mcs-string-repertoire-p): Likewise.
 (detect-mime-charset-region): New implementation for
 UTF-2000 implementations. (detect-mime-charset-string): New
 function for UTF-2000 implementations.

---
 mcs-20.el |   68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/mcs-20.el b/mcs-20.el
index ca9f394..7b78585 100644
--- a/mcs-20.el
+++ b/mcs-20.el
@@ -144,10 +144,78 @@ It must be symbol."
   :group 'i18n
   :type 'mime-charset)
 
+(cond ((featurep 'utf-2000)
+;; for CHISE Architecture
+(defun mcs-region-repertoire-p (start end charsets &optional buffer)
+  (save-excursion
+    (if buffer
+	(set-buffer buffer))
+    (save-restriction
+      (narrow-to-region start end)
+      (goto-char (point-min))
+      (catch 'tag
+	(let (ch)
+	  (while (not (eobp))
+	    (setq ch (char-after (point)))
+	    (unless (some (lambda (ccs)
+			    (encode-char ch ccs))
+			  charsets)
+	      (throw 'tag nil))
+	    (forward-char)))
+	t))))
+
+(defun mcs-string-repertoire-p (string charsets &optional start end)
+  (let ((i (if start
+	       (if (< start 0)
+		   (error 'args-out-of-range string start end)
+		 start)
+	     0))
+	ch)
+    (if end
+	(if (> end (length string))
+	    (error 'args-out-of-range string start end))
+      (setq end (length string)))
+    (catch 'tag
+      (while (< i end)
+	(setq ch (aref string i))
+	(unless (some (lambda (ccs)
+			(encode-char ch ccs))
+		      charsets)
+	  (throw 'tag nil))
+	(setq i (1+ i)))
+      t)))
+
+(defun detect-mime-charset-region (start end)
+  "Return MIME charset for region between START and END."
+  (let ((rest charsets-mime-charset-alist)
+	cell)
+    (catch 'tag
+      (while rest
+	(setq cell (car rest))
+	(if (mcs-region-repertoire-p start end (car cell))
+	    (throw 'tag (cdr cell)))
+	(setq rest (cdr rest)))
+      default-mime-charset-for-write)))
+
+(defun detect-mime-charset-string (string)
+  "Return MIME charset for STRING."
+  (let ((rest charsets-mime-charset-alist)
+	cell)
+    (catch 'tag
+      (while rest
+	(setq cell (car rest))
+	(if (mcs-string-repertoire-p string (car cell))
+	    (throw 'tag (cdr cell)))
+	(setq rest (cdr rest)))
+      default-mime-charset-for-write)))
+)
+(t
+;; for legacy Mule
 (defun detect-mime-charset-region (start end)
   "Return MIME charset for region between START and END."
   (find-mime-charset-by-charsets (find-charset-region start end)
 				 'region start end))
+))
 
 (defun write-region-as-mime-charset (charset start end filename
 					     &optional append visit lockname)
-- 
1.7.10.4