Does this help? https://www.w3.org/International/articles/inline-bidi-markup/

From: UA-discuss <ua-discuss-bounces@icann.org> on behalf of "don.hollander@uasg.tech" <don.hollander@uasg.tech>
Date: Tuesday, March 20, 2018 at 3:51 PM
To: "UA-discuss@icann.org" <ua-discuss@icann.org>
Subject: [EXTERNAL] [UA-discuss] Bi-Di text treatment

I’ve seen a number of discussions recently about the challenges of treating text generally, and identifiers specifically, that include scripts/characters that operate both left-to-right AND right-to-left.

I don’t think that the UASG is a home for this because the issue extends beyond domain names and email addresses.

But I think there must be someplace that focuses specifically on this topic and I would like to be able to provide a pointer to it.

Any suggestions?

Don