Twig Tricks and HTML Escaping

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In this tutorial we're going to play with some extra nice things you can do with Twig. We're going to get expert control of our blocks with the block function, work with concatenating strings, controlling our whitespace, and using undefined variables with the default filter. We'll wrap things up with a look at escaping HTML. Whenever you render content that may have been filled in by the user, you need to escape it. This prevents people from writing HTML tags that you don’t want or, worse, JavaScript code that could be used for cross-site scripting attacks.