I found code that is supposed to detect UnicodeSyntax extension in this polyglot, but it doesn't work: Try it online. Can someone suggest a modification or may be completely different way that works?

Preferably without using other extensions.

@H.PWiz Cool, thanks a lot. Will you post it on wait-what-language-is-this? If not, I will do.

@ØrjanJohansen Can you look if TemplateHaskell and ScopedTypeVariables can be golfed further? I want to add them to the big polyglot.

@stasoid Posted