I really like Tumblr's templating language. It's simple, it makes sense for small contexts, and it's easily extensible. So I decided to make my own. This will be the core of the next generation of the Narrator engine, the thing I use to render my stories and series. It's also not restricted to HTML; it actually doesn't care much what it's embedded in, so I can use this to render LaTeX documents as well, meaning that I might be getting close to a story engine that produces EPUB and printed matter automatically.
It's fairly simple. This is just version 0.0.1, so don't expect it to be safe like liquid (although that's ultimately a goal), and I've already had an idea for refining it further. Check it out: