I have recently updated to sac 101.1 and when running sac through a
sac < sac-input
sac does not return gracefully unless sac-input contains a "quit".
Instead it begins thrashing (high CPU load without any apparent reason).
Although I admit this was a bit sloppy my scripts usually omitted the
final "quit" which ran fine on sac100.00 at least, so it would be good
to get this robustness back.