Emacs

# macOS (Homebrew) - GUI version
brew install --cask emacs

# macOS (Homebrew) - Terminal version
brew install emacs

# Ubuntu/Debian
sudo apt install emacs

# Ubuntu (latest - Snap)
sudo snap install emacs --classic

# Fedora
sudo dnf install emacs

# Arch Linux
sudo pacman -S emacs

# Windows (Chocolatey)
choco install emacs

# Windows (Scoop)
scoop install emacs

# Check version
emacs --version

# Start Emacs
emacs filename.txt

# Start in terminal mode
emacs -nw filename.txt

# Skip configuration on startup
emacs -Q

# Start in daemon mode
emacs --daemon

# Connect to daemon
emacsclient -c

;; Basic settings
(setq inhibit-startup-message t)     ; Hide startup screen
(setq initial-scratch-message nil)   ; Clear scratch buffer message

;; UI settings
(tool-bar-mode -1)                    ; Hide toolbar
(menu-bar-mode -1)                    ; Hide menu bar
(scroll-bar-mode -1)                  ; Hide scrollbar
(global-display-line-numbers-mode 1) ; Show line numbers
(column-number-mode 1)               ; Show column number
(show-paren-mode 1)                  ; Highlight matching brackets

;; Font and appearance
(set-face-attribute 'default nil :height 140)  ; Font size
(load-theme 'modus-vivendi t)                  ; Theme (built-in Emacs 28+)

;; Indentation settings
(setq-default indent-tabs-mode nil)  ; Use spaces instead of tabs
(setq-default tab-width 2)           ; Tab width

;; Backup settings
(setq backup-directory-alist '(("." . "~/.emacs.d/backups")))
(setq auto-save-file-name-transforms '((".*" "~/.emacs.d/auto-save/" t)))

;; UTF-8 settings
(prefer-coding-system 'utf-8)
(set-default-coding-systems 'utf-8)

;; Use y/n instead of yes/no
(defalias 'yes-or-no-p 'y-or-n-p)

;; Auto save
(auto-save-visited-mode 1)

;; Track recently opened files
(recentf-mode 1)
(setq recentf-max-menu-items 25)
(global-set-key (kbd "C-x C-r") 'recentf-open-files)

;; Clipboard integration
(setq select-enable-clipboard t)

;; Custom keybindings
(global-set-key (kbd "M-o") 'other-window)  ; Switch window

;; Package repository settings
(require 'package)
(setq package-archives
      '(("melpa" . "https://melpa.org/packages/")
        ("gnu" . "https://elpa.gnu.org/packages/")
        ("nongnu" . "https://elpa.nongnu.org/nongnu/")))
(package-initialize)

;; Install use-package (for Emacs 28 and earlier)
(unless (package-installed-p 'use-package)
  (package-refresh-contents)
  (package-install 'use-package))

(require 'use-package)
(setq use-package-always-ensure t)  ; Auto-install packages

;; Color scheme
(use-package doom-themes
  :config
  (load-theme 'doom-one t))

;; Mode line
(use-package doom-modeline
  :init (doom-modeline-mode 1))

;; File explorer
(use-package treemacs
  :bind
  ("C-c t" . treemacs))

;; Completion framework
(use-package vertico
  :init (vertico-mode))

(use-package orderless
  :custom
  (completion-styles '(orderless basic)))

(use-package marginalia
  :init (marginalia-mode))

(use-package consult
  :bind
  (("C-s" . consult-line)
   ("C-x b" . consult-buffer)
   ("M-g g" . consult-goto-line)))

;; Git integration (Magit)
(use-package magit
  :bind ("C-x g" . magit-status))

;; Enhanced syntax highlighting
(use-package tree-sitter
  :config
  (global-tree-sitter-mode)
  (add-hook 'tree-sitter-after-on-hook #'tree-sitter-hl-mode))

(use-package tree-sitter-langs)

;; LSP support
(use-package eglot
  :hook
  ((python-mode . eglot-ensure)
   (typescript-mode . eglot-ensure)
   (rust-mode . eglot-ensure)))

;; Auto-completion
(use-package corfu
  :init (global-corfu-mode)
  :custom
  (corfu-auto t)
  (corfu-auto-delay 0.2))

;; Auto-pair brackets
(use-package smartparens
  :config
  (smartparens-global-mode t))

;; Comment toggle
(use-package evil-nerd-commenter
  :bind ("M-;" . evilnc-comment-or-uncomment-lines))

;; which-key (keybinding help)
(use-package which-key
  :init (which-key-mode)
  :config
  (setq which-key-idle-delay 0.5))

;; Project management
(use-package projectile
  :init (projectile-mode +1)
  :bind-keymap ("C-c p" . projectile-command-map))

* Project Management
** TODO Task 1
   DEADLINE: <2024-01-15>
   - [ ] Subtask 1
   - [X] Subtask 2 (completed)

** DONE Completed Task
   CLOSED: [2024-01-10]

* Notes
  You can write plain text here.

  #+BEGIN_SRC python
  def hello():
      print("Hello, Org mode!")
  #+END_SRC

* Spreadsheet
  | Item   | Qty  | Price | Total |
  |--------+------+-------+-------|
  | Apple  |    3 |   100 |   300 |
  | Orange |    5 |    80 |   400 |
  |--------+------+-------+-------|
  | Total  |      |       |   700 |
  #+TBLFM: $4=$2*$3::@5$4=vsum(@2..@4)