Just noticed the error box is breaking words apart (e.g. "s/newline/tring"). This should not happen. <img width="1157" alt="screen shot 2017-03-18 at 15 32 41" src="https://cloud.githubusercontent.com/assets/810438/24073502/2ed36df6-0bf0-11e7-948d-1a29b4dee4c8.png"> I also don’t think the error text should be monospace. Makes it a bit hard to read.