I know now.... Bash completition...

At least i got started, but its so cool!
I've already packaged dev-scripts with the first attempt of bash-completition... and it reads dynamicly the folders of projects..

So it lists the existing projects to complete your shell comand, where applicable.
And its not just like a list of options to list... its depending upon which commands you already had supplied, so it will require to give you something else to complete from..