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Explain a regex

Understand cryptic regexes before touching them.

ChatGPTClaudeCopilotDeepSeek Education and learningProductivity and automation

This Prompt What does it do?

Understand cryptic regexes before touching them.

Download explain-regex-decode.md Build a custom version 6 Download · 11 Views

Full text Prompt

I found this regular expression in the code and do not understand it: [regex]. Language: [JavaScript/PHP/Python]. Explain it piece by piece, say what it matches overall, give 4 matching and 4 non-matching examples, check for risks like catastrophic backtracking, and suggest a simpler version with the same behavior if one exists.

English version (for image and video models)

I found this regular expression in the code and do not understand it: [regex]. Language: [JavaScript/PHP/Python]. Explain it piece by piece, say what it matches overall, give 4 matching and 4 non-matching examples, check for risks like catastrophic backtracking, and suggest a simpler version with the same behavior if one exists.
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Prompt “Explain a regex” — how do I use it?

Click the copy button, fill in any variables under “Fill in the variables”, and paste the text into ChatGPT, Claude, Copilot, DeepSeek . For an answer in your language, add at the end: “Answer in my language”.

Is using this prompt free?

Yes. This prompt is from the collection awesome-persian-prompts With license CC0-1.0 collected and free for personal and commercial use.

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