The encoding of __FILE__ and __dir__ should be same

* ruby.c (process_options): convert the real path of the script to locale
  encoding if its encoding is not locale (maybe UTF-8) on Windows/OS X.
  this change makes the encoding of __dir__ to the same encoding of __FILE__
  when the script name is passed from commandline.

* test/ruby/test_options.rb (test___dir__encoding): test for this change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60300 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ruby.c

@@ -1737,6 +1737,11 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
 	VALUE path = Qnil;
 	if (!opt->e_script && strcmp(opt->script, "-")) {
 	    path = rb_realpath_internal(Qnil, script_name, 1);
+#if UTF8_PATH
+	    if (uenc != lenc) {
+		path = str_conv_enc(path, uenc, lenc);
+	    }
+#endif
 	}
 	base_block = toplevel_context(toplevel_binding);
 	iseq = rb_iseq_new_main(tree, opt->script_name, path, vm_block_iseq(base_block));

test/ruby/test_rubyoptions.rb

@@ -935,4 +935,20 @@ class TestRubyOptions < Test::Unit::TestCase
       end
     end
   end
+
+  def test___dir__encoding
+    with_tmpchdir do
+      testdir = "\u30c6\u30b9\u30c8"
+      Dir.mkdir(testdir)
+      Dir.chdir(testdir) do
+        open("test.rb", "w") do |f|
+          f.puts <<-END
+            p __FILE__.encoding == __dir__.encoding
+          END
+        end
+        r, = EnvUtil.invoke_ruby("test.rb", "", true)
+        assert_equal "true", r.chomp, "the encoding of __FILE__ and __dir__ should be same"
+      end
+    end
+  end
 end