Keith Moore writes:
I'm not sure exactly what is being proposed, but I'm very against
any attempt to retroactively legitimize the use of escape sequences
at all (let alone to indicate directionality) in MIME standard
charsets.
The use of ESC in iso-8859-* is done to be compatible with US-ASCII,
which has had the control characters from the very beginning.
It is too late to change that now.
ASCII has had control characters since time began but the effect
of these charcters when displayed has never been defined for
Internet mail.
(other than a CR LF combination and *maybe* BS and HT...and RFC 822
cautions against the use of the latter in headers)
Keith