Regex Tester Tool

Description

Test and debug regular expressions with match highlighting, capture group extraction, and a library of common patterns.

Trigger

• /regex command
• User needs to test regex
• User wants pattern matching help

Usage

# Test pattern
python scripts/regex_tester.py "\\d+" "abc123def456"

# Show capture groups
python scripts/regex_tester.py "(\\w+)@(\\w+)" "user@domain" --groups

# Find all matches
python scripts/regex_tester.py "\\b\\w{4}\\b" "The quick brown fox" --all

# Use common pattern
python scripts/regex_tester.py --pattern email "Contact: test@example.com"

Tags

regex, pattern, match, test, text

Compatibility

• Codex: ✅
• Claude Code: ✅