That will not be because of an array data structure for the lines.

When properly done, plugins/extensions are in separate process which do not hang the main UI thread. It helps if these processes has a low priority. Also, ionice is good when processing many documents.

Another flaw of many extensions/language servers have, is the lack of abort controller implementation. This means that debouncing doesn't work. So if there are many document updates, the server would hang.

There's a difference between noticing latency and considering it a problem.

My car doesn't go at the speed of sound. That doesn't mean I think "man, this car is slow" each time I drive it.

But if the same car suddenly stops, and I have to open all the doors and close them again in order to keep going, that sure is a problem.

> There's a difference between noticing latency and considering it a problem.

Just because you don't consider it a problem, doesn't mean it's not a problem.

Weren't you the one lamenting about ML having potential to being 100-1000x faster if only there were real™ software engineers to implement them?

> My car doesn't go at the speed of sound. That doesn't mean I think "man, this car is slow" each time I drive it.

This isn't even remotely valid example. Put your car on track against faster cars and you'll quickly arrive to `man, this car is slow`.

I'm sure then you'd be perfectly content if your otherwise perfect car were replaced with one identical in all ways except that the acceleration was 1/4 of the previous rate.