[comfypotato]

Hey! Exactly the response I was looking for. Thanks for this.

Your response reminded me of an Intel project about regular expressions. I think it’s called hyperscan, but I’m not sure. It’s a regex engine (I think that’s the correct terminology) that makes dedicated use of very specific Intel instructions to reach incredible regex speeds on Intel processors. Would be cool if Emacs could make use of this tech when configured properly. I bet there are some internals that rely on regex.