I believe that Boost doesn't handle hyphens in domain names in bang-links correctly.

I'm afraid that I can't confirm it myself, as I don't use Boost, but a user here says that Boost apparently can't handle Threadiverse bang links where the hostname has hyphens in it.

He was attempting to follow !Silksong@indie-ver.se

Just wanted to get a heads-up to the Boost developers.

Thanks for your time!