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