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Advanced Topics

Master advanced Emacs features, write Elisp, and extend functionality to create your perfect editor.

🧩 Elisp Programming

Emacs Lisp (Elisp) is the programming language used to extend and customize Emacs.

Basic Function Example:

(defun my-insert-date ()
  "Insert current date at point."
  (interactive)
  (insert (format-time-string "%Y-%m-%d")))

🔧 Custom Modes

Create custom major and minor modes for specialized editing tasks.

Minor Mode Example:

(define-minor-mode my-mode
  "A simple minor mode."
  :lighter " MyMode"
  :keymap (let ((map (make-sparse-keymap)))
            (define-key map (kbd "C-c m") 'my-command)
            map))

⚡ Performance Tips

Startup Optimization

  • • Use (setq gc-cons-threshold 10000000) during init
  • • Defer package loading with :defer t
  • • Use use-package for better organization

🌐 Integration

LSP Integration

Language Server Protocol support for modern IDE features.

Terminal Integration

Use Emacs in terminal, tmux, and remote sessions.