From 4df3a7b0ea4215dc7da3c40f8d5c0e089bbdb8e7 Mon Sep 17 00:00:00 2001
From: tomo <tomo>
Date: Fri, 15 Dec 2000 10:02:10 +0000
Subject: [PATCH] - Don't require `poem'. (find-coding-system): New inline
 function. (coding-system-get): Deleted.
 (mime-charset-list): Don't use `defun-maybe-cond'. - Don't
 require `mcs-20'.

---
 mime/mcs-e20.el |   62 +++++++++++++++----------------------------------------
 1 file changed, 17 insertions(+), 45 deletions(-)

diff --git a/mime/mcs-e20.el b/mime/mcs-e20.el
index 00b621e..e0713fa 100644
--- a/mime/mcs-e20.el
+++ b/mime/mcs-e20.el
@@ -28,10 +28,12 @@
 
 ;;; Code:
 
-(eval-when-compile
-  (require 'static)
-  (require 'poem)
-  )
+(eval-when-compile (require 'static))
+
+(defsubst find-coding-system (obj)
+  "Return OBJ if it is a coding-system."
+  (if (coding-system-p obj)
+      obj))
 
 (defsubst encode-mime-charset-region (start end charset &optional lbt)
   "Encode the text between START and END as MIME CHARSET."
@@ -107,11 +109,6 @@
 ; 	    chinese-cns11643-7)				. iso-2022-int-1)
     ))
 
-(defun-maybe coding-system-get (coding-system prop)
-  "Extract a value from CODING-SYSTEM's property list for property PROP."
-  (plist-get (coding-system-plist coding-system) prop)
-  )
-
 (defun coding-system-to-mime-charset (coding-system)
   "Convert CODING-SYSTEM to a MIME-charset.
 Return nil if corresponding MIME-charset is not found."
@@ -119,44 +116,21 @@ Return nil if corresponding MIME-charset is not found."
       (coding-system-get coding-system 'mime-charset)
       ))
 
-(defun-maybe-cond mime-charset-list ()
+(defun mime-charset-list ()
   "Return a list of all existing MIME-charset."
-  ((boundp 'coding-system-list)
-   (let ((dest (mapcar (function car) mime-charset-coding-system-alist))
-	 (rest coding-system-list)
-	 cs)
-     (while rest
-       (setq cs (car rest))
-       (unless (rassq cs mime-charset-coding-system-alist)
-	 (if (setq cs (coding-system-get cs 'mime-charset))
-	     (or (rassq cs mime-charset-coding-system-alist)
-		 (memq cs dest)  
-		 (setq dest (cons cs dest))
-		 )))
-       (setq rest (cdr rest)))
-     dest))
-   (t
-    (let ((dest (mapcar (function car) mime-charset-coding-system-alist))
-	  (rest (coding-system-list))
-	  cs)
-      (while rest
-	(setq cs (car rest))
-	(unless (rassq cs mime-charset-coding-system-alist)
-	  (when (setq cs (or (coding-system-get cs 'mime-charset)
-			     (and
-			      (setq cs (aref
-					(coding-system-get cs 'coding-spec)
-					2))
-			      (string-match "(MIME:[ \t]*\\([^,)]+\\)" cs)
-			      (match-string 1 cs))))
-	    (setq cs (intern (downcase cs)))
+  (let ((dest (mapcar (function car) mime-charset-coding-system-alist))
+	(rest coding-system-list)
+	cs)
+    (while rest
+      (setq cs (car rest))
+      (unless (rassq cs mime-charset-coding-system-alist)
+	(if (setq cs (coding-system-get cs 'mime-charset))
 	    (or (rassq cs mime-charset-coding-system-alist)
-		(memq cs dest)
+		(memq cs dest)  
 		(setq dest (cons cs dest))
 		)))
-	(setq rest (cdr rest)))
-      dest)
-    ))
+      (setq rest (cdr rest)))
+    dest))
 
 (static-when (and (string= (decode-coding-string "\e.A\eN!" 'ctext) "\eN!")
 		  (or (not (find-coding-system 'x-ctext))
@@ -177,8 +151,6 @@ Return nil if corresponding MIME-charset is not found."
 ;;; @ end
 ;;;
 
-(require 'mcs-20)
-
 (require 'product)
 (product-provide (provide 'mcs-e20) (require 'apel-ver))
 
-- 
1.7.10.4