angular/angular.js — pull request #5427 by khellang (2013-12-16 12:15:50+00:00)
Title: docs(ngShowHide): Added note about falsy values in ngShow and ngHide

I've been bitten by this several times, and it's not documented anywhere. Since `angular.toBoolean` considers additional values as false, it should be documented somewhere. This could probably go into a separate page which allows easier maintainability if/when the values change.