module Rake::Win32

def win32_system_dir #:nodoc:

:nodoc:
If the above are not defined, the return nil.

* USERPROFILE
* APPDATA
* HOMEDRIVE + HOMEPATH
* HOME

order):
Win 32 systems. Try the following environment variables (in
The standard directory containing system wide rake files on 
def win32_system_dir #:nodoc:
  win32_shared_path = ENV['HOME']
  if win32_shared_path.nil? && ENV['HOMEDRIVE'] && ENV['HOMEPATH']
    win32_shared_path = ENV['HOMEDRIVE'] + ENV['HOMEPATH']
  end
  win32_shared_path ||= ENV['APPDATA']
  win32_shared_path ||= ENV['USERPROFILE']
  raise Win32HomeError, "Unable to determine home path environment variable." if
    win32_shared_path.nil? or win32_shared_path.empty?
  normalize(File.join(win32_shared_path, 'Rake'))
end