title: Make sign use only one character width?
body: <p>Sign is referring to the extra column on the left that is added when using e.g. the syntastic plugin. 
  I'd like to save on space by having it take up only one column of space, if possible. I can change the sign used to <code>&gt;</code> from <code>&gt;&gt;</code> but it's still two char's wide!</p>