Rustc has code to refactor-rename variables across multiple files? Code to extract the implementation of a function out into a separate file? Code to turn dupli

Rustc has code to refactor-rename variables across multiple files? Code to extract the implementation of a function out into a separate file? Code to turn duplicated code automatically into a macro? The significant task in a language server isn't the "parse and show types" part but the "provide resharper-like refactoring functionality". And every single language server has to reimplement all these from scratch. And every single language server ends up with slightly different refactoring functionality, no standardisation or anything. Compare that to IDEA, where changing the type of a function at one point, and propagating that change to all calling functions across the whole code base is a single key stroke — and always the same, no matter which language you use. That's what I'm complaining about. LSP is an improvement for editors, but significantly worse than the alternative for actual IDEs.