SteveSanderson/knockout — pull request #238 by gigi81 (2011-12-21 09:06:57+00:00)
Title: Added the 'command' binding handler, similar to ICommand xaml interface

It's a combination of the 'click' and 'enable' bindings. It allows a more compact and clear syntax.
Don't know if it can go for the standard but I think it can be usefull to someone else.