jashkenas/coffee-script — comment on commit 65d21766b77ea8cd62886a2896d476016f3ec6b0
File: lib/coffee-script/command.js line 221
By satyr:

`watcher` here will always be `undefined`. Trapped by [_The Problem with Implicit Scoping_](http://lucumr.pocoo.org/2011/12/22/implicit-scoping-in-coffeescript/)? ;)