Every time I use tab autocompletion with zsh instead of completing the current string, it gives me a new string + options to complete. It's hard to explane, so here is an example. This is what would happen if I type 'ls Nue' and hit tab.

[me@mbp:/Volumes/hdd/music]: ls Neu    ls Neu
 Neuraxis/              Neurosis/              Neutral\ Milk\ Hotel/

If I delete the second `ls Nue', I am unable to delete the white space and the first. If I hit return, it is as if I have just entered a blank line. Does anyone know what is going on.