I am using the Awesome window manager - I like it.
When I press mod+R I get the run command on the top left of the screen. Here if I type in a command exactly correct it runs the application.
How can I make the mod+R box smart? Example: If I press 'f' and then 'up arrow' it will auto search for applications (or through my run history) that begin with 'f' (like firefox).