PromptVault
CodingFreeIntermediate

An opaque regex becomes a maintainable equivalent

For engineers inheriting pattern-heavy code; returns a documented, behavior-preserving regex.

Works with
  • Cursor
  • GitHub Copilot
The prompt56 words · 1 blank

Transform [regex_code] in three ordered stages: 1. derive captures, anchors, flags, and

The full prompt is in the app

Free — no subscription needed. Fill in the blanks there, then copy it into Cursor.

What you fill in

  • Regex and call site[regex_code]ExamplePattern declaration, matching code, and representative inputs

How to use it

  1. 1Open it in PromptVault. Find it in Coding, or search for “An opaque regex becomes a maintainable equivalent”.
  2. 2Fill in the blank. regex and call site — the only things the prompt cannot know.
  3. 3Copy and paste it into Cursor. It also works with GitHub Copilot.

About this prompt

An opaque regex becomes a maintainable equivalent” is a intermediate coding prompt. For engineers inheriting pattern-heavy code; returns a documented, behavior-preserving regex. It is 56 words long and written to get a usable answer on the first message, in Cursor and GitHub Copilot or any other chat assistant. Good for: regex, rewrite, refactoring and documentation. Like every prompt in PromptVault, it was written and edited in-house, and it works offline once the app is installed.