You are correct. In fact I was only trying to match the 3 digits. Other digits (if they happened to exist for some reason in this example) would remain unchanged as there is nothing for them to be replaced with.
Could this example have worked? (I'm not positive on how \b works)
/s\.\d{3,3}\b/g
Using the \b word border to make sure the digits ended at a space/end of line. Obviously that wouldn't work if someone did s.123hh:nn:ss (for whatever reason).
-genius_at_work
