Comments on IDNA Bidi
jefsey at jefsey.com
Wed Jan 16 16:20:02 CET 2008
At 11:40 16/01/2008, Cary Karp wrote:
>"Display" strikes me as the more objective term (being an attribute of
>what the machine does), to which "visual" is a cognitive correlate
>(being in the mind of the beholder).
I agree. When you enter a name on a keyboard, this is the display
order. When you read it on an ad, this is the visual order. Unicode
is a standard to manage the display order (printing). IDNA wants to
use it in a visual order (the order used to register it). This
creates several impossibilities to address the DNS, zone
administrators, security, etc. needs, including because the same
visual may correspond to several display codes or even sequences and
The only DNS needs are a unique registration order and a unique
registration correspondance between display and visual. Bidi is a no
problem once the direction is set (it results from the display order
qualias [position and left to right or right to left]).
This leaves us with two plans:
- plan IDNA, to best use the current Unicode oriented proposition on
a temporary basis, that countries and semantic addressing can use now.
- plan IDNB, to devise a universal visual sign secured set
interoperable with ISO 10646 and a conversion from that UV3S to ASCII
that can be consistently used in every semiotic applications, and at
International Network presentation layer (that we also have to devise
Why to support the idea of a single authoritative root, so the same
ASCII DN resolves the same IP everywhere, if the same U-label does
not resolve first to the A-label for ever?
More information about the Idna-update