A last missing link for interoperable representation

[Martin J. Dürst via Unicode]

On 2019/01/13 03:50, Asmus Freytag via Unicode wrote:

> To reiterate, if you effectively require a span (even if you could simulate that
> differently) you are in the realm or rich text. The one big exception to that is
> bidi, because it is utterly impossible to do bidi text without text ranges.
> Therefore, Unicode plain text explicitly violates that principle in favor of
> achieving a fundamental goal of universality, that is being able to include the
> bidi languages.

Yes, and in HTML, where higher-level (span-based) mechanisms are 
available, it is preferred to use these rather than the bidi control 
characters.

Regards,    Martin.