I've been looking for something like this recently, and there are actually quite a few options. Unfortunately, they can only handle files up to a particular size. My use case is to pretty up a huge SQL dump so that I can grab it. Every existing tool tries to read the entire thing into memory, and ends up crashing.
the language server protocol supports range operations, although I don’t know how many editors enable it. plus it’s arguably harder to implement. I will add benchmarks once the server is ready, and we can see how far we can get from there. thanks for the feedback!
