sk89q/commandbook — pull request #69 by Frogging101 (2012-03-09 22:28:03+00:00)
Title: "glitchy" item stacking option

I added an option here to stack "glitchy" items, which means items that behave weirdly or brokenly when stacked. An example is tools. When a stack of tools is used, the durability of all of them goes down.