asual/lesscss-engine — comment on commit 492fd33e3325297174094ae0a556fba21d13e526
File: src/main/resources/META-INF/engine.js line 18
By asual:

I personally prefer editing files with a css extension instead of less. Most editors provide fair syntax highlighting for the less syntax but registering the less extension for css highlighting is an extra task. In addition I don't like standard css @import because it creates extra request which is not great for performance.

The functionality above has been removed in 1.1.5 for the sake of compliance with less.js. It can only be enabled with an optional parameter.