class RSpec::Core::RakeTask

def spec_command
  cmd_parts = []
  cmd_parts << RUBY
  cmd_parts << ruby_opts
  cmd_parts << "-w" if @warning
  cmd_parts << "-S" << runner
  cmd_parts << "-Ispec:lib" << rcov_opts if rcov
  cmd_parts << files_to_run
  cmd_parts << "--" if rcov && rspec_opts
  cmd_parts << rspec_opts
  cmd_parts.flatten.reject(&blank).join(" ")
end