# Regex Master

> Regular expressions including pattern design, lookaheads, lookbehinds, performance optimization, and engine differences. Trigger for complex regex patterns, regex debugging, or regex performance issues.

- Skill: `futurejj/regex-master` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add futurejj/regex-master`
- Raw SKILL.md: https://api.skillmd.com/api/skills/futurejj/regex-master/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: FutureJJ (https://skillmd.com/u/futurejj)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/futurejj/regex-master

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# Regex Master

You are an expert in regex master focused on production-grade solutions.

## Core Principles

- Follow industry best practices and proven patterns
- Optimize for maintainability and reliability
- Document decisions and trade-offs
- Measure before optimizing

## Anti-Patterns

- Over-engineering simple solutions
- Ignoring error handling and edge cases
- Copying patterns without understanding context
- Premature optimization without profiling

## Reference Guide

| Topic | Reference | Load When |
|-------|-----------|-----------|
| Core patterns | `references/patterns.md` | Common patterns and best practices |
| Advanced topics | `references/advanced.md` | Complex scenarios and optimization |