class Rspec::Core::Configuration

def initialize
  @run_all_when_everything_filtered = true
  @before_and_afters = { :before => { :each => [], :all => [], :suite => [] }, :after => { :each => [], :all => [], :suite => [] } }
  @include_or_extend_modules = []
  @filter, @exclusion_filter = nil, nil
  @options = default_options
  @backtrace_clean_patterns = []
end