[galaxy-dev] approximate line numbers shown in history items can be very imprecise

Hi, I noticed that the current version of galaxy shows approximate number of lines for history items, when it is relatively big. I guess this is due to a consideration of performance, but it is quite annoying, because the exact line numbers provide a very easy way for users to get simple statistics. Sometimes the approximation can be really off. For instance, for one file with > 1 M lines, it shows ~850,000 lines. Any thought? Chaolin