How do I add a new template language?

[silvenon]

I would like to register a new language called posthtml which uses PostHTML, how do I do this? Also, if I define htmlTemplateEngine: 'posthtml', will PostHTML be applied after other languages, too? E.g. will .ejs files first be processed with EJS, then PostHTML? Thanks!

[gobeli]

It's going to be possible with the "Custom File Extension Handler"-feature ( #117)
You can already use them with activated experimental features (ELEVENTY_EXPERIMENTAL=true npx @11ty/eleventy)
A good example is the vue plugin: https://github.com/11ty/eleventy-plugin-vue

[silvenon]

Thanks!