In [docs](http://docs.sublimetext.info/en/latest/reference/key_bindings.html#warning-about-bindable-keys) there is a warning: > If you’re developing a package, keep this in mind: > > * Ctrl+Alt+<alphanum> should never be used in any Windows key bindings. And in this package `ctrl+alt+w` is used for Can I use feature [here](https://github.com/pichillilorenzo/JavaScript-Completions/blob/master/Default%20(Windows).sublime-keymap#L25).