On Mon, Aug 6, 2018, 7:06 AM Daniel Shahaf wrote: > Peter Stephenson wrote on Mon, 06 Aug 2018 10:29 +0100: > > > > Are you suggesting avoiding looking at the return value, but looking at > > what its effect would have been at the point where you would have looked > > it? > > Yes. > There are a few cases where it is desirable to return nonzero even when matches have been added, and also the reverse. >