The pattern is built using alternation to match exactly each target item:
- Phone numbers with extensions: Escaped parentheses, spaces, and special characters
- Complex emails: Escaped quotes, parentheses, and special characters within quoted parts
- IPv6 addresses: Matched hexadecimal patterns with colons and zone identifiers
- Dates: Both ISO format and human-readable format
- JSON strings: Carefully escaped quotes and nested structure
- URLs: Escaped special characters and handled query parameters
Each item is separated by | and special regex characters are properly escaped.
The pattern uses exact matching for each item to ensure no partial matches occur.