class RDoc::Markup
  AttrChanger = Struct.new :turn_on, :turn_off # :nodoc:
end
##
# An AttrChanger records a change in attributes. It contains a bitmap of the
# attributes to turn on, and a bitmap of those to turn off.
class RDoc::Markup::AttrChanger
  def to_s # :nodoc:
    "Attr: +#{turn_on}/-#{turn_off}"
  end
  def inspect # :nodoc:
    '+%d/-%d' % [turn_on, turn_off]
  end
end