change $USER to ${USER} to avoid history expansion
change $USER to ${USER} to avoid history expansion

see [here](http://stackoverflow.com/questions/15140221/weired-zsh-behavior-how-to-debug/)

tarVolcano/my-boxen,mnussbaum/my_boxen,tarVolcano/my-boxen,urimikhli/myboxen,mnussbaum/my_boxen,mnussbaum/my_boxen,tarVolcano/my-boxen,urimikhli/myboxen,urimikhli/myboxen