From 7edf58ba32a5c0ae637347b881fe0ef85544e757 Mon Sep 17 00:00:00 2001
From: ueno <ueno>
Date: Sun, 31 Dec 2006 08:45:38 +0000
Subject: [PATCH] * epa.el (epa--find-coding-system-for-mime-charset): New
 function. (epa-decrypt-armor-in-region): Use it.

---
 ChangeLog |    2 ++
 epa.el    |   25 +++++++++++++++++--------
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d42ea99..db6dd1d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,8 @@
 	(epa--mail-mode-p): New function.
 	(epa-sign): Use it.
 	(epa-encrypt): Use it.
+	(epa--find-coding-system-for-mime-charset): New function.
+	(epa-decrypt-armor-in-region): Use it.
 
 2006-12-31  Daiki Ueno  <ueno@unixuser.org>
 
diff --git a/epa.el b/epa.el
index 35b3582..ac10d7f 100644
--- a/epa.el
+++ b/epa.el
@@ -766,6 +766,17 @@ Don't use this command in Lisp programs!"
 	  (epa-display-info (epg-verify-result-to-string
 			     (epg-context-result-for context 'verify)))))))
 
+(defun epa--find-coding-system-for-mime-charset (mime-charset)
+  (if (featurep 'xemacs)
+      (if (fboundp 'find-coding-system)
+	  (find-coding-system mime-charset))
+    (let ((pointer (coding-system-list)))
+      (while (and pointer
+		  (eq (coding-system-get (car pointer) 'mime-charset)
+		      mime-charset))
+	(setq pointer (cdr pointer)))
+      pointer)))
+
 ;;;###autoload
 (defun epa-decrypt-armor-in-region (start end)
   "Decrypt OpenPGP armors in the current region between START and END.
@@ -776,7 +787,7 @@ Don't use this command in Lisp programs!"
     (save-restriction
       (narrow-to-region start end)
       (goto-char start)
-      (let (armor-start armor-end charset coding-system)
+      (let (armor-start armor-end coding-system)
 	(while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
 	  (setq armor-start (match-beginning 0)
 		armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
@@ -785,13 +796,11 @@ Don't use this command in Lisp programs!"
 	    (error "No armor tail"))
 	  (goto-char armor-start)
 	  (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
-	      (setq charset (match-string 1)))
-	  (if coding-system-for-read
-	      (setq coding-system coding-system-for-read)
-	    (if charset
-		(setq coding-system (intern (downcase charset)))
-	      (setq coding-system 'utf-8)))
-	  (let ((coding-system-for-read coding-system))
+	      (setq coding-system (epa--find-coding-system-for-mime-charset
+				   (intern (downcase (match-string 1))))))
+	  (let ((coding-system-for-read
+		 (or coding-system-for-read
+		     coding-system)))
 	    (epa-decrypt-region armor-start armor-end)))))))
 
 ;;;###autoload
-- 
1.7.10.4