transcode.c: empty encoding name

* transcode.c (rb_econv_set_replacement): target encoding name can
  be empty now.  [ruby-core:69841] [Bug #11324]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51116 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 0 deletions

diff --git a/test/ruby/test_transcode.rb b/test/ruby/test_transcode.rb
index 8ace00c172..4bade11a51 100644
--- a/test/ruby/test_transcode.rb
+++ b/test/ruby/test_transcode.rb
@@ -2109,4 +2109,13 @@ class TestTranscode < Test::Unit::TestCase
       assert_equal([expected]*num, result, bug11277)
     end;
   end
+
+  def test_universal_newline
+    bug11324 = '[ruby-core:69841] [Bug #11324]'
+    usascii = Encoding::US_ASCII
+    s = "A\nB\r\nC".force_encoding(usascii)
+    assert_equal("A\nB\nC", s.encode(usascii, universal_newline: true), bug11324)
+    assert_equal("A\nB\nC", s.encode(usascii, universal_newline: true, undef: :replace), bug11324)
+    assert_equal("A\nB\nC", s.encode(usascii, universal_newline: true, undef: :replace, replace: ''), bug11324)
+  end
 end