diff --git a/ChangeLog b/ChangeLog
index 215bf69131..656356db42 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,6 @@
-Sat Dec 25 15:58:55 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Sat Dec 25 16:04:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/csv.rb (CSV::foreach, CSV#initialize): directly use encoding
 
 	* lib/csv.rb, test/csv: should not assume $, invariant.
 
diff --git a/lib/csv.rb b/lib/csv.rb
index 1ad019a269..266810cb93 100644
--- a/lib/csv.rb
+++ b/lib/csv.rb
@@ -1203,10 +1203,7 @@ class CSV
   # but transcode it to UTF-8 before CSV parses it.
   #
   def self.foreach(path, options = Hash.new, &block)
-    encoding =  options.delete(:encoding)
-    mode     =  "rb"
-    mode     << ":#{encoding}" if encoding
-    open(path, mode, options) do |csv|
+    open(path, 'rb', options) do |csv|
       csv.each(&block)
     end
   end
@@ -1564,7 +1561,8 @@ class CSV
     # create the IO object we will read from
     @io       = data.is_a?(String) ? StringIO.new(data) : data
     # honor the IO encoding if we can, otherwise default to ASCII-8BIT
-    @encoding = raw_encoding || Encoding.default_internal ||
+    @encoding = options.delete(:internal_encoding) || options.delete(:encoding) ||
+                raw_encoding || Encoding.default_internal ||
                                 Encoding.default_external
     #
     # prepare for building safe regular expressions in the target encoding,
diff --git a/test/csv/test_encodings.rb b/test/csv/test_encodings.rb
index 6681470097..0f2ec127c5 100755
--- a/test/csv/test_encodings.rb
+++ b/test/csv/test_encodings.rb
@@ -154,10 +154,9 @@ class TestCSV::Encodings < TestCSV
   def test_foreach_allows_you_to_set_encodings
     encode_for_tests([%w[abc def]]) do |data|
       # read and write in encoding
-      File.open(@temp_csv_path, "wb:#{data.encoding.name}") { |f| f << data }
-      CSV.foreach(@temp_csv_path, encoding: data.encoding.name) do |row|
-        assert( row.all? { |f| f.encoding == data.encoding },
-                "Wrong data encoding." )
+      File.open(@temp_csv_path, "wb", encoding: data.encoding) { |f| f << data }
+      CSV.foreach(@temp_csv_path, encoding: data.encoding) do |row|
+        row.each {|f| assert_equal(f.encoding, data.encoding)}
       end
   
       # read and write with transcoding