tests/regex/datafiles/empty.dat

   1 E       (a*)x           x       (0,1)(0,0)
   2 E       (a)*x           x       (0,1)(?,?)
   3 E       (a*)*x          x       (0,1)(0,0)
   4 E       (a+)x           x       NOMATCH
   5 E       (a)+x           x       NOMATCH
   6 E       (a+)*x          x       (0,1)(?,?)
   7 E       (a*)+x          x       (0,1)(0,0)