When typing /kill and then attempting to autocomplete the following argument with the tab key, it does not input your player's name like other commands, for example:
/give (press tab) will come up with your player's name
/entitydata (press tab) will come up with your player's name
but /kill (press tab) will not come up with anything. The autocomplete still does not complete a player's name when typing it halfway.
Comments 5
No, wait! When you begin typing a player's name, it doesn't autocomplete it if you hit Tab. The entire name must be typed out.
Confirmed.