Ruby File and Dir cant using non-english path

• Testcase included:

  yes

found this problem when creating a project in chinese path name.
like 'D:/我的文件/RubyApplication12'
then it shows cant find rake tasks.

the problem occurs at rake.rb's Dir.chdir.

so i try to test File.open and Dir.chdir in jruby.
test code:
file = File.open("D:\\我的文件
test.txt")
file.each() { |line|
puts line # can print the content in the test.txt
}
puts file.path # print D:????\test.txt
puts Dir.pwd #print D:/我的文件/RubyApplication12/lib
Dir.chdir("D:
我的文件") # error->D:??\RubyApplication12\lib\main.rb:13:in `chdir': No such file or directory - No such file or directory - D:???§?????????????? (Errno::ENOENT)