gsettings command tab key autocomplete

edit

In Fedora 16 I liked a lot the tab key auto-complete feature embedded with the gsettings command. Never used it, it was really helpful! It worked similarly as the yum command does when you partially insert a package name and hit the tab key (a couple of times).

# yum install bas            #<- hit tab a couple of times here
                             #   and you'll get packages list
base64coder-javadoc.noarch  bash-doc.x86_64
base64coder.noarch          bashmount.noarch
bashdb.noarch               bastet.x86_64

For gsettings command values are no longer showed while hitting tab... Is this a feature we should turn on somehow?
Do we have an alternative to list key values available for a certain entry?