method
escape_once
![Some documentation Importance_1](https://d2vfyqvduarcvs.cloudfront.net/images/importance_1.png?1349367920)
escape_once(html)
public
Returns an escaped version of html without affecting existing escaped entities.
Examples
escape_once("1 < 2 & 3") # => "1 < 2 & 3" escape_once("<< Accept & Checkout") # => "<< Accept & Checkout"