Emacs does not need LSP

Table of Contents In-buffer completion Jump to definition and references Syntax checking Conclusion Language-server-protocol (lsp) is standard to communicate information about a current programming project to an editor integration, powered by a “language server” for the specific programming language. Emacs has two major implementations of this editor functionality: eglot (built-in) and lsp-mode. Getting this set up is usually one of the first things that new users will want to do, but in my experience one can get by for a surprisingly long time using Emacs without needing to reach for eglot or lsp-mode. That is because many of the functions that lsp-servers provide can be provided by Emacs through other means. As someone who quite often moves between different programming languages, I find the need to set up each lsp-server to a bit clunky. Despite being presented as a simple one-stop solution, you often need to research exactly what server to use, how to set it up, and to tailor it…