> If all the changelog entry says is something like > > (xyz): new function > > I don't see much point, since a diff can always easily tell > you *what* was changed.
The point is that, by just looking at the ChangeLog, you can tell when xyz was introduced and by whom. I've used that quite a number of times. Moreover, as was pointed out, when you have a source distribution, you don't get the commit logs, just the ChangeLog.