Lokaltog/powerline — pull request #748 by kruton (2014-01-13 19:21:08+00:00)
Title: Add optional parameter to common.user to hide username if it's an expected value 

This mimics some of the functionality @agnoster had in his zsh theme. It allows you to supply a username that you are normally or put that username in an environment variable and hide the common.user segment if it's that value.