Unicode: flag "u" and class \p{...}

[EhsanShahbazii]

/done

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[mahdiHash]

Please review the changes.
You can add the suggestions to a batch and submit a single commit (docs).

[javascript-translate-bot]

Please make the requested changes. After it, add a comment "/done".
Then I'll ask for a new review 👻

[EhsanShahbazii]

/done

[mahdiHash]

Thanks for your contribution, @EhsanShahbazii.

[javascript-translate-bot]

Thank you 💖 I updated the Progress Issue #1 🎉 🎉 🎉