Bash-like autocompletition

[Matthias Brandt <mb@xxxxxxx>]

Hi,

I'm just switching from bash to zsh and what i'm really confused about 
is the autocompletition. Can i tell zsh *not* to complete the whole 
first menu entry automatically?

Something like this:

$ ls
aaaabcdefg  aabg  aabcdefg
$ ls a<tab>                        #i want the cli only complete
$ ls aa                            #until the first ambigous character.
aaaabcdefg  aabg        aabcdefg   #<- the menu will be shown


Any idea how to configure this?

Thank you,
Matthias