class DEBUGGER__::UI_LocalConsole

def after_fork_parent
  parent_pid = Process.pid
  at_exit{
    SESSION.intercept_trap_sigint_end
    trap(:SIGINT, :IGNORE)
    if Process.pid == parent_pid
      # only check child process from its parent
      begin
        # wait for all child processes to keep terminal
        Process.waitpid
      rescue Errno::ESRCH, Errno::ECHILD
      end
    end
  }
end