From 3bf158c16e3b1cbd0c85cabada54479f6a2aaed8 Mon Sep 17 00:00:00 2001
From: chessMan <71754779+mohitmishra786@users.noreply.github.com>
Date: Tue, 12 Nov 2024 11:46:00 +0530
Subject: [PATCH] Create emacs.md

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+# GNU Emacs Cheatsheet
+
+## Key Notation
+- `C-` means hold the Control key
+- `M-` means hold the Alt key (Meta) or press and release Escape
+- `C-x` means press Control and 'x' together
+- `M-x` means press Alt and 'x' together or press Escape then 'x'
+
+## File Operations
+| Command | Description |
+|---------|-------------|
+| `C-x C-f` | Open a file |
+| `C-x C-s` | Save current file |
+| `C-x C-w` | Save as... |
+| `C-x C-k` | Close file |
+| `C-x C-c` | Quit Emacs |
+
+## Text Selection
+| Command | Description |
+|---------|-------------|
+| `C-<space>` or `C-@` | Start selection |
+| `C-g` | Deselect |
+
+## Navigation Commands
+### Line Navigation
+| Command | Description |
+|---------|-------------|
+| `C-p` | Move to previous line |
+| `C-n` | Move to next line |
+
+### Character Navigation
+| Command | Description |
+|---------|-------------|
+| `C-b` | Move back one character |
+| `C-f` | Move forward one character |
+
+### Word Navigation
+| Command | Description |
+|---------|-------------|
+| `M-b` | Move back one word |
+| `M-f` | Move forward one word |
+
+### Line Boundaries
+| Command | Description |
+|---------|-------------|
+| `C-a` | Go to start of line |
+| `C-e` | Go to end of line |
+
+## Copy & Paste Operations
+### Traditional Emacs Style
+| Command | Description |
+|---------|-------------|
+| `C-w` | Cut (Kill) |
+| `M-w` | Copy |
+| `C-y` | Paste (Yank) |
+| `C-k` | Cut line after cursor |
+| `M-d` | Cut word after cursor |
+
+### Modern Style (CUA Mode)
+| Command | Description |
+|---------|-------------|
+| `M-x cua-mode` | Activate modern copy & paste |
+| `C-x` | Cut |
+| `C-c` | Copy |
+| `C-v` | Paste |
+
+## Undo Operations
+| Command | Description |
+|---------|-------------|
+| `C-/` or `C-x u` | Undo last operation |
+
+## Windows, Frames, and Buffers
+### Split Operations
+| Command | Description |
+|---------|-------------|
+| `C-3` | Split window vertically |
+| `C-2` | Split window horizontally |
+| `C-1` | Remove all splits (single window) |
+| `C-0` | Remove current window |
+
+### Buffer Management
+| Command | Description |
+|---------|-------------|
+| `C-x <arrow>` | Cycle through active buffers |
+| `C-o` | Visit other split window |
+
+### Frame Management
+| Command | Description |
+|---------|-------------|
+| `C-x 52` | Open a new frame |
+
+## Emergency Commands
+| Command | Description |
+|---------|-------------|
+| `C-g` | Cancel current operation/command |
+
+## Help System
+| Command | Description |
+|---------|-------------|
+| `C-h k <key combo>` | Show key combination binding |
+| `C-h b` | Display all key bindings |
+
+## Package Management
+| Command | Description |
+|---------|-------------|
+| `M-x list-packages` | List all available packages |
+| `M-x describe-package` | Describe package at cursor |
+| `M-x package-menu-mark-install` | Mark package for installation |
+| `M-x package-install-selected-packages` | Install marked packages |
+
+## Important Concepts
+1. **Buffer**: Holds a process or file content
+2. **Window**: Your view of a buffer
+3. **Frame**: The desktop window containing Emacs
+
+## Additional Navigation Methods
+- Use arrow keys for cursor movement if available
+- Use mouse to click and drag for text selection
+
+## Tips for New Users
+1. Start with basic file operations and navigation
+2. Learn the help system commands early
+3. Consider using CUA mode if coming from other editors
+4. Practice emergency cancel (`C-g`) for when things go wrong
+5. Use package management to extend functionality
+
+## Customization Basics
+```elisp
+;; Add to your .emacs file or init.el
+;; Enable CUA mode for familiar copy-paste
+(cua-mode t)
+
+;; Enable line numbers
+(global-display-line-numbers-mode)
+
+;; Enable syntax highlighting
+(global-font-lock-mode t)
+```
+
+## Common Workflows
+
+### File Management Workflow
+1. Open Emacs
+2. Use `C-x C-f` to find file
+3. Edit content
+4. Save with `C-x C-s`
+5. Close with `C-x C-k` or quit Emacs with `C-x C-c`
+
+### Text Editing Workflow
+1. Navigate to location
+2. Start selection with `C-<space>`
+3. Move cursor to select text
+4. Cut/copy as needed
+5. Navigate to new location
+6. Paste content
+
+### Window Management Workflow
+1. Split window as needed (`C-2` or `C-3`)
+2. Open different files in splits
+3. Use `C-o` to switch between splits
+4. Close splits when done (`C-0` or `C-1`)
+
+## Best Practices
+1. Learn the help system first
+2. Practice navigation commands
+3. Use package management for extensions
+4. Learn buffer management
+5. Master window splitting
+6. Understand the difference between kill/yank and modern copy/paste
+7. Keep emergency commands in mind