Is there any way to list files in the current directory with double clicking TAB?

[csy19960309]

I have checked usage of auto-completion, but still stay confused how to customize it.
For example, how can I specify what will be displayed when I invoke auto-completion? I know names of menus are listed, so what about anything else? Like current directory files?
I used to achieve this feature with GNU readline. Now I switch to this cli lib because I think it is better.