Compiling REx `(")[^\1]*\1'
size 19 first at 3
   1: OPEN1(3)
   3:   EXACT <">(5)
   5: CLOSE1(7)
   7: STAR(17)
   8:   ANYOF[\0\2-\377](0)
  17: REF1(19)
  19: END(0)