From 999123c147fa8177d83e8cec0ff713bcee03ea89 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 7 Jul 2009 01:15:32 +0000
Subject: [PATCH] * io.c (rb_io_ext_int_to_encs): Set external encoding if  
 ext==intern. [ruby-dev:38278]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23976 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog | 5 +++++
 io.c      | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 9bf7518b24..1c28949d15 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jul  7 10:12:37 2009  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* io.c (rb_io_ext_int_to_encs): Set external encoding if
+	  ext==intern. [ruby-dev:38278]
+
 Mon Jul  6 09:31:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* proc.c (make_curry_proc): should propagate lambda-ness.
diff --git a/io.c b/io.c
index 8b5db0e066..7f8733f031 100644
--- a/io.c
+++ b/io.c
@@ -4101,7 +4101,7 @@ rb_io_ext_int_to_encs(rb_encoding *ext, rb_encoding *intern, rb_encoding **enc,
 	intern = rb_default_internal_encoding();
     if (intern == NULL || intern == (rb_encoding *)Qnil || intern == ext) {
 	/* No internal encoding => use external + no transcoding */
-	*enc = default_ext ? NULL : ext;
+	*enc = (default_ext && intern != ext) ? NULL : ext;
 	*enc2 = NULL;
     }
     else {