Write a Regex Pattern

# Write a Regex Pattern **Best model:** GPT-4o **Category:** Coding & Development **Tags:** regex, pattern matching, text processing, programming ## Description Get the exact regular expression for your matching needs, with explanation and test cases. ## Prompt Write a regex pattern that matches: [DESCRIBE WHAT YOU NEED TO MATCH]. Requirements: 1. THE PATTERN: The exact regex string. 2. EXPLANATION: Break down each part of the pattern (e.g., '\d{3} means exactly 3 digits'). 3. TEST CASES: 5 strings that SHOULD match, 5 that SHOULD NOT match. 4. EDGE CASES: Empty strings, Unicode, special characters, maximum length. 5. FLAGS: Which regex flags to use (i, g, m, etc.) and why. 6. PERFORMANCE: Is this pattern prone to catastrophic backtracking? If yes, suggest an optimization. 7. LANGUAGE-SPECIFIC NOTES: Any quirks in [LANGUAGE]'s regex engine. Target language: [LANGUAGE]