I develop a commercial plugin for IntelliJ. A while ago I asked on the plugin development forums here about file watching, but unfortunately it seems that the JDK doesn't support native file watching on OSX. There are a couple of third party solutions, but they don't seem well supported. It would be really great to have a native implementation in the JetBrains JDK since this could be used for a lot of different IDE functionality - is this feasible?