class Bundler::Settings

def all
  keys = @temporary.keys.union(@global_config.keys, @local_config.keys, @env_config.keys)
  keys.map! do |key|
    key = key.delete_prefix("BUNDLE_")
    key.gsub!("___", "-")
    key.gsub!("__", ".")
    key.downcase!
    key
  end.sort!
  keys
end