.html.twig extension doesn't work

[bwiggs]

According to the Symfony docs, the convention is to use .html.twig as the filename extension. Unfortunately this doesn't work for me as I don't get any highlighting.

http://symfony.com/doc/current/book/templating.html#template-naming-and-locations

Anyone else having this issue?

.twig.html does work, but breaks the sparkup plugin, and isn't inline with the Symfony naming conventions.

[bwiggs]

User error, plugin works great!