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💻 Coding·Works on: claude, chatgpt, cursor
Regex Generator
Get a regex with explanation, edge cases, and a test plan.
#regex#validation
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Generate a regex that matches: . Deliver: 1. The regex, in syntax. 2. A one-line plain-English description. 3. A breakdown of each group/character class. 4. 5 strings that should match. 5. 5 strings that look similar but should NOT match (and why). If my requirement is ambiguous, list the ambiguities before giving the regex.
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e.g. "US phone numbers in (xxx) xxx-xxxx format only"
›See the lazy version this template replaces
Before — the lazy prompt
give me a regex for emails
Why it works
- Forces the model to enumerate edge cases — most regex bugs live in the 'should NOT match' set.
- Explicit flavor avoids subtle regex-engine differences.
- The breakdown teaches you, not just solves the problem.
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