Bukkit/Bukkit — pull request #688 by AlphaBlend (2012-10-05 19:35:15+00:00)
Title: Toggle whether a tool receives damage when breaking a block

When a tool is used to break a block, you can toggle whether or not the tool receives damage. This can be useful, especially if you want to simulate creative mode in specific areas, where a tool does not receive damage when breaking a block.