SIMPLEQ_NEXT
(var) = SIMPLEQ_NEXT(var, field))
(var) && ((tvar) = SIMPLEQ_NEXT(var, field), 1); \
nti = SIMPLEQ_NEXT(ti, entries);
nti = SIMPLEQ_NEXT(ti, entries);
(var) = SIMPLEQ_NEXT(var, field))