* lib/csv.rb (CSV::open): suppress universal newline decorator.

  fixes #4603

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31370 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 15 insertions, 0 deletions

diff --git a/test/csv/test_encodings.rb b/test/csv/test_encodings.rb
index 3880f3ad58..54c34f3f38 100755
--- a/test/csv/test_encodings.rb
+++ b/test/csv/test_encodings.rb
@@ -79,6 +79,21 @@ class TestCSV::Encodings < TestCSV
     end
   end
 
+  def test_read_with_default_encoding
+    data = "abc"
+    default_external = Encoding.default_external
+    each_encoding do |encoding|
+      File.open(@temp_csv_path, "wb", encoding: encoding) {|f| f << data}
+      begin
+        Encoding.default_external = encoding
+        result = CSV.read(@temp_csv_path)[0][0]
+      ensure
+        Encoding.default_external = default_external
+      end
+      assert_equal(encoding, result.encoding)
+    end
+  end
+
   #######################################################################
   ### Stress Test ASCII Compatible and Non-ASCII Compatible Encodings ###
   #######################################################################