1*11be35a1SLionel Sambuc# cases involving NULs 2*11be35a1SLionel SambucaZb & a a 3*11be35a1SLionel SambucaZb &p a 4*11be35a1SLionel SambucaZb &p# (aZb) aZb 5*11be35a1SLionel SambucaZ*b &p# (ab) ab 6*11be35a1SLionel Sambuca.b &# (aZb) aZb 7*11be35a1SLionel Sambuca.* &# (aZb)c aZb 8