Display git changes in GitHub-style unified diff format with colored terminal output. Shows both staged (--cached) and unstaged changes with two-column line numbers, red/green highlighting, and chunk markers. Use when reviewing code changes, preparing commits, or comparing file modifications. Triggers on "git diff", "show changes", "what changed", or "review diff".
Installs into .claude/skills of the current project.
Are you the author of Git Diff?
Add the live security badge to your README. It updates with every re-scan.
[](https://www.skillsdirectory.com/skills/majiayu000-git-diff)
---
name: git-diff
description: Display git changes in GitHub-style unified diff format with colored terminal output. Shows both staged (--cached) and unstaged changes with two-column line numbers, red/green highlighting, and chunk markers. Use when reviewing code changes, preparing commits, or comparing file modifications. Triggers on "git diff", "show changes", "what changed", or "review diff".
allowed-tools: Bash, Read
---
# git-diff
Display git changes in GitHub-style unified diff format.
## Execution
Run the Python script to display formatted diff:
```bash
python3 scripts/github_diff.py [optional-path]
```
## Output Format
- **File headers**: Dark background with filepath
- **Line numbers**: Two columns (old | new)
- **Deletions**: Red background with `-` marker
- **Additions**: Green background with `+` marker
- **Context**: Neutral with both line numbers
- **Chunk markers**: Cyan `@@ -n,m +n,m @@` headers
## Sections
1. **Staged Changes** (`git diff --cached`) - shown first if present
2. **Unstaged Changes** (`git diff`) - working directory modifications
## Examples
```bash
# Show all changes
python3 scripts/github_diff.py
# Filter by path
python3 scripts/github_diff.py src/components/
```
## Requirements
- Python 3.6+
- Git installed and in PATH
- Terminal with ANSI color support
