Interesting question ... I'm sitting in KLIA at the tail end of a 24 hour journey waiting for the final stretch home. To pass the time I thought I'd stock up on my alcohol supplies only to have the individuals at the shop say I can't buy any (and drinking some now would be good too!). Now I haven't been outside KLIA - not even through border control and I have the boarding passes from the previous 2 flights.
Does transiting through KL mean that I'm coming to Singapore from Malaysia for customs purposes or from my original destination?