```
[] ~/projects/webrick $ jruby -e 'puts "/\xA4\xDB\xA4\xB2/\xA4\xDB\xA4\xB2"'
/?ۤ?/?ۤ?

[] ~/projects/webrick $ jruby -e 'ENV["foo"] = "/\xA4\xDB\xA4\xB2/\xA4\xDB\xA4\xB2"; p ENV["foo"]'
"/�ۤ�/�ۤ�"
```