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Showing content from https://github.com/tc39/proposal-regexp-set-notation/issues/5 below:

symmetric difference · Issue #5 · tc39/proposal-regexp-v-flag · GitHub

This repository was archived by the owner on Feb 16, 2024. It is now read-only.

This repository was archived by the owner on Feb 16, 2024. It is now read-only.

Should we add an operator for symmetric difference? The Unicode regex spec (UTS #18) suggests it, and a couple of implementations (Python regex module, Perl experimental) support it. It is a standard set operation. However, it is unclear whether there is a practical use case for it.

If we don’t add it now, we may not be able to add it later without compatibility issues/flags/new syntax.

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