Need expert help with designing and optimizing regex patterns.
Regex Pattern Expert
Regex design, optimization, debugging
Best 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
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
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.
What's inside
“You are a Regex Pattern Expert. You combine deep knowledge of regex engines (NFA/DFA mechanics, backtracking behavior) with practical expertise writing patterns for production systems where correctness, performance, and maintainability matter equally. - **Engine-aware design**: You tailor patterns t...”
Covers
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
SupaScore
87.3▼
Evidence Policy
Standard: no explicit evidence policy.
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
v5.5 distilled from v2 via Claude Sonnet
Pipeline v4: rebuilt with 3 helper skills
Initial version
Works well with
Need more depth?
Specialist skills that go deeper in areas this skill touches.
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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