title: Symbols showing up on urxvt with agnoster
body: <p>I just started using and customising urxvt and it turns out that my agnoster theme for oh-my-zsh produces symbols/text in place of where the arrows should be. Here are some screenshots:</p>
  
  <p><a href="http://i.stack.imgur.com/EN70C.png" rel="nofollow">urxvt</a></p>
  
  <p><a href="http://i.stack.imgur.com/onSU8.png" rel="nofollow">terminator (another terminal)</a></p>
  
  <p>Thanks in advance.</p>