diff --git a/ChangeLog b/ChangeLog
index 5bbeccd082..500e66e806 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Thu Dec 13 08:24:16 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* io.c (read_all): should associate default external encoding.
+
+	* io.c (io_read): should NOT associate default external encoding.
+
 Wed Dec 12 23:22:58 2007  Tanaka Akira  <akr@fsij.org>
 
 	* re.c, regerror.c, string.c, parse.y, ruby.c, file.c:
diff --git a/io.c b/io.c
index 5975296ac2..5af2d493c6 100644
--- a/io.c
+++ b/io.c
@@ -1266,6 +1266,16 @@ remain_size(rb_io_t *fptr)
     return (long)siz;
 }
 
+static VALUE
+io_enc_str(VALUE str, rb_io_t *fptr)
+{
+    OBJ_TAINT(str);
+    if (fptr->enc) {
+	rb_enc_associate(str, fptr->enc);
+    }
+    return str;
+}
+
 static VALUE
 read_all(rb_io_t *fptr, long siz, VALUE str)
 {
@@ -1291,9 +1301,7 @@ read_all(rb_io_t *fptr, long siz, VALUE str)
 	rb_str_resize(str, siz);
     }
     if (bytes != siz) rb_str_resize(str, bytes);
-    OBJ_TAINT(str);
-
-    return str;
+    return io_enc_str(str, fptr);
 }
 
 void rb_io_set_nonblock(rb_io_t *fptr)
@@ -1521,16 +1529,6 @@ rb_io_write_nonblock(VALUE io, VALUE str)
     return LONG2FIX(n);
 }
 
-static VALUE
-io_enc_str(VALUE str, rb_io_t *fptr)
-{
-    OBJ_TAINT(str);
-    if (fptr->enc) {
-	rb_enc_associate(str, fptr->enc);
-    }
-    return str;
-}
-
 /*
  *  call-seq:
  *     ios.read([length [, buffer]])    => string, buffer, or nil
@@ -1597,7 +1595,8 @@ io_read(int argc, VALUE *argv, VALUE io)
         return Qnil;
     }
     rb_str_resize(str, n);
-    return io_enc_str(str, fptr);
+
+    return str;
 }
 
 static int
diff --git a/version.h b/version.h
index 9168e76ea0..027c64de08 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2007-12-12"
+#define RUBY_RELEASE_DATE "2007-12-13"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20071212
+#define RUBY_RELEASE_CODE 20071213
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2007
 #define RUBY_RELEASE_MONTH 12
-#define RUBY_RELEASE_DAY 12
+#define RUBY_RELEASE_DAY 13
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];