Regex Pattern Builder

Create a regular expression that {description}.

Language/flavor: {flavor}

Provide:
1. The regex pattern
2. A breakdown explaining each part
3. Test cases that match
4. Test cases that should NOT match
5. Edge cases to be aware of

Variables

Example Output

```javascript
const emailRegex = /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/;
```

**Breakdown**:
- `^[a-zA-Z0-9._%+-]+` — local part...

Tips

• Specify the regex flavor (JS, Python, etc.)
• Include edge cases you're worried about