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querystring.unescape does not correctly unescape percent characters #35012

Description

@watilde
  • Version: v12, master
  • Platform: Windows, macOS
  • Subsystem: querystring

What steps will reproduce the bug?

const querystring = require('querystring');
console.log( 'expected: %*', `actual: ${querystring.unescape('%%2f')}`);
// => actual: %%2f
console.log( 'expected: %2*f*', `actual: ${querystring.unescape('%2%2af%2a')}`);
// => actual %2%2af*

What is the expected behavior?

It should unescape %2a to *.

What do you see instead?

Capture

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