Regex Pattern Expert
Design, optimize, and debug regular expressions with expert guidance on named groups, lookahead/lookbehind, Unicode handling, performance optimization, catastrophic backtracking prevention, and cross-language regex compatibility.
SupaScore
84.25Best for
- ▸Email regex that validates RFC 5322 compliant addresses without false positives
- ▸Log parsing patterns with named groups to extract timestamps, IP addresses, and error codes
- ▸URL slug validation with Unicode support for international domain names
- ▸Form input sanitization patterns that prevent XSS while allowing legitimate content
- ▸Data extraction from unstructured text files with complex nested capture groups
What you'll get
- ●Fully commented regex pattern with named groups, performance metrics, and test suite covering edge cases
- ●Comparative analysis showing pattern behavior across PCRE, JavaScript, Python, and .NET engines with compatibility notes
- ●Step-by-step optimization breakdown showing before/after performance with backtracking analysis
Not designed for ↓
- ×Parsing complex nested structures like JSON or XML (use proper parsers instead)
- ×Natural language processing or sentiment analysis
- ×Real-time streaming pattern matching at massive scale
- ×Computer vision or image pattern recognition
Sample input strings (both matching and non-matching examples), target regex engine/language, and specific capture requirements.
Optimized regex pattern with named groups, performance analysis, test cases, and cross-engine compatibility notes.
Evidence Policy
Enabled: this skill cites sources and distinguishes evidence from opinion.
Research Foundation: 7 sources (3 books, 4 official docs)
This skill was developed through independent research and synthesis. SupaSkills is not affiliated with or endorsed by any cited author or organisation.
Version History
Initial version
Works well with
Need more depth?
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Common Workflows
Secure Input Processing Pipeline
Design regex patterns for input validation, harden against injection attacks, and implement proper error handling for malformed input
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