In Snapshot 13w09c when you beak wool with shears they don't use up durability.

I went to a desert temple to get the loot. I got it then went to collect the wool from the walls of the pyramid. I used an undamaged pair of shears to collect the wool, while i was doing so, I noticed that the shears had not taken any damage
Note: I was playing over LAN but it was hosted on the computer I was using.