# File lib/backports/1.9.1/file/open.rb, line 6
  def open_with_options_hash(file, mode = nil, perm = Backports::Undefined, options = Backports::Undefined)
    mode, perm = Backports.combine_mode_perm_and_option(mode, perm, options)
    perm ||= 0666 # Avoid error on Rubinius, see issue #52
    if block_given?
      open_without_options_hash(file, mode, perm){|f| yield f}
    else
      open_without_options_hash(file, mode, perm)
    end
  end