It looks hack.chat is using KaTeX under the hood. We recently added support for environments, but haven't implemented {align} yet. If anyone's interest in hel

It looks hack.chat is using KaTeX under the hood. We recently added support for environments, but haven't implemented {align} yet. If anyone's interest in helping please see https://github.com/Khan/KaTeX/issues/61 https://github.com/Khan/KaTeX/issues/61.