class Byebug::Command

def debug_eval(str, b = get_binding)
  begin
    eval(str, b)
  rescue StandardError, ScriptError => e
    if Command.settings[:stack_on_error]
      at = eval("Thread.current.backtrace_locations", b)
      print "#{at.shift}: #{e.class} Exception(#{e.message})\n"
      for i in at
        print "\tfrom #{i}\n"
      end
    else
      print "#{e.class} Exception: #{e.message}\n"
    end
    nil
  end
end