class Rspec::Core::Configuration

def debug=(bool)
  return unless bool
  begin
    require 'ruby-debug'
  rescue LoadError
    raise <<-EOM
50}
st install ruby-debug to run rspec with the --debug option.
 have ruby-debug installed as a ruby gem, then you need to either
e 'rubygems' or configure the RUBYOPT environment variable with
lue 'rubygems'.
50}
  end
end