find_home

# File lib/rubygems.rb, line 579
  def self.find_home
    windows = File::ALT_SEPARATOR
    if not windows or RUBY_VERSION >= '1.9' then
      File.expand_path "~"
    else
      ['HOME', 'USERPROFILE'].each do |key|
        return File.expand_path ENV[key] if ENV[key]
      end

      if ENV['HOMEDRIVE'] && ENV['HOMEPATH'] then
        File.expand_path "#{ENV['HOMEDRIVE']}#{ENV['HOMEPATH']}"
      end
    end
  rescue
    if windows then
      File.expand_path File.join(ENV['HOMEDRIVE'] || ENV['SystemDrive'], '/')
    else
      File.expand_path "/"
    end
  end