prevent unsupported pseudo selector from crashing
prevent unsupported pseudo selector from crashing

LivelyKernel/LivelyKernel,LivelyKernel/LivelyKernel,pascience/LivelyKernel,pascience/LivelyKernel,LivelyKernel/LivelyKernel,pascience/LivelyKernel,NikolaySuslov/LivelyKernel,NikolaySuslov/LivelyKernel,NikolaySuslov/LivelyKernel