dellsala/Combo-Box-jQuery-Plugin — pull request #15 by kycook (2012-09-27 20:22:44+00:00)
Title: Switch from using keyCode to which on event and prevented combobox from

First, I made a change so when ctrl or a combination of ctrl and another character is pressed in the input box, the drop-down does not open. I ran across this scenario because my web app allows users to press Ctrl+S to save. In that case, I didn't want the drop-down to show immediately after using a keyboard shortcut.

Second, I replaced references to keyCode with references to which [as recommended by jQuery](http://api.jquery.com/event.which/).