Bug #877: [win32] Ruby Standard Library (maybe smth else): Wrong Encoding in Files, Directories and Environment Variables http://redmine.ruby-lang.org/issues/show/877 Author: Dmitry A. Ustalov Status: Open, Priority: High Target version: Ruby 1.8.6 I am from Russia, and my system language is set to Russian. When I tried to create a directory via Dir.mkdir method: irb(main):002:0> Dir.mkdir "c:/ruby/扭把抉志快把抗忘" => 0 Word "扭把抉志快把抗忘" means "test" in Russian. Directory name appears in wrong charset (details at the screenshot). irb(main):003:0> File.exists? "c:/ruby/扭把抉志快把抗忘" => true This is a root of many problems, for example, when program tries to create a directory in %USERPROFILE%/Application Data, see: Microsoft Windows XP [圾快把扼我攸 5.1.2600] (妊) 妞抉把扭抉把忘扯我攸 妙忘抄抗把抉扼抉扳找, 1985-2001. C:\Documents and Settings\均忱技我扶我扼找把忘找抉把>irb irb(main):001:0> $KCODE = 'utf8' => "utf8" irb(main):002:0> ENV['userprofile'] => "C:\\Documents and Settings\\\200\244\254\250\255\250扼找把\240找抉把" irb(main):003:0> $KCODE = '' => "" irb(main):004:0> ENV['userprofile'] => "C:\\Documents and Settings\\\200\244\254\250\255\250\341\342\340\240\342\256 \340" irb(main):005:0> File.exists? ENV['userprofile'] => false Word "均忱技我扶我扼找把忘找抉把" means "Administrator" in Russian. Microsoft Windows XP [Version 5.1.2600]. C:\>ruby -v ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32] Ruby is installed from http://rubyinstaller.rubyforge.org/ . ---------------------------------------- http://redmine.ruby-lang.org