class RSpec::Core::Configuration

def initialize
  self.include_or_extend_modules = []
  self.files_to_run = []
  self.backtrace_clean_patterns = [
    /\/lib\d*\/ruby\//,
    /bin\/rcov:/,
    /vendor\/rails/,
    /bin\/rspec/,
    /bin\/spec/,
    /lib\/rspec\/(core|expectations|matchers|mocks)/
  ]
end