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Modern Emacs: all those new tools that make Emacs better and faster - YouTube

Optimization

  • Lexical Binding: Before Emacs 24 emacs-lisp is dynamic binding. lexical binding is introduced in Emacs 24, enabling compile-time optimizations.
  • Native Compilation: Introduced in Emacs 28, native compilation used the GCC JIT compile to convert Emacs Lisp code to native machine code, dramatically improving execution speed.

Package Management

  • Lazy loading with use-package: use-package is now build into Emacs 29
  • Straight Package Manager : works with use-package to handle package installations and version control.

Syntax Highlighting and Parsing

  • Tree-sitter Integration: Emacs 29 includes support for Tree-sitter, a parser generator that improves syntax highlighting and code navigation by using precise parse trees instead of regular expressions. This results in more accurate and faster syntax highlighting.
  • tree-sitter mode: new major modes that utilize tree-sitter for enhanced code parsing and highlighting, for example, use python-ts-mode to replace traditional python-mode.

Completion Frameworks

  • Historical Context: Initially, Emacs used ido for interactive file and buffer navigation, followed by heavier frameworks like helm and ivy for more advanced completions.
  • Modern Solutions: vertico consult orderless marginalia embark

Language Server Protocol (LSP)

  • eglot: Emacs’ build-in LSP client

I personally use lsp-bridge for completion and LSP