🚀 go-pugleaf

Mark Davis, the President of Unicode, Inc., let me know that the purpose of
the ISO10646 was so old that it failed to reflect the merger between Unicode
Version 1.0 and ISO/IEC DIS 10646:1991 (the first draft international
standard).  A 1992 international ballot approved the adoption of the
second draft international standard (ISO/IEC DIS 10646-1.2:1992 that merged
Unicode Version 1.0 and DIS 10646) as an international standard.  The
international standard was published as ISO/IEC 10646-1:1993 and is available
from your national standards committee.  In the U.S., this is ANSI.

I am including a revised description of the scope of the ISO10646 LISTSERVe and
my earlier answer to a question about the differences between ISO/IEC 10646-1
and Unicode Version 1.1.

Ed Hart,
List Owner of ISO10646@jhuvm.hcf.jhu.edu
Edwin.Hart@jhuapl.edu
               __________________________________________

           (Revised) Description of the ISO10646 LISTSERVe

List Name: ISO10646

List Description: On multibyte coded-character-set issues related to the
ISO/IEC 10646 Universal Coded Character Set standard
and the Unicode implementation of ISO/IEC 10646.

Subscriptions To:  LISTSERV@JHUVM.HCF.JHU.EDU (Bitnet: LISTSERV@JHUVM)
          where body = SUBSCRIBE ISO10646 firstName lastName
Owner=  Edwin.Hart@jhuapl.edu (Ed Hart)
Archive= Listserv LISTSERV@JHUVM.HCF.JHU.EDU

                   ___________________________________

     Answer to, "What are the differences between 10646 and Unicode?"

What are the differences between ISO/IEC 10646-1 and Unicode Version 1.1?

In summary, essentually the two are the same.
The difference between ISO/IEC 10646-1:1993 and Unicode Version 1.1
is that 10646-1 is the standard and Unicode 1.1 not only describes the 2-byte
(16-bit) subset the standard but also describes implementing the standard.

ISO/IEC 10646-1:1993 is an international standard.  This is part 1 of the
standard and describes conformance requirements, the architecture, and the
characters encoded.  The code has two forms:  UCS-2 defines the first 16-bit
code-space called a plane.   UCS-2 represents the Basic Multilingual Plane
(or BMP).  UCS-4 defines a 32-bit code-space where the first plane is the
BMP.

Unicode Version 1.1 is compliant with UCS-2 of ISO/IEC 10646-1:1993.
Specifically, Unicode Version 1.1 complies with the UCS-2 form, at level 3
for the full set of characters defined by 10646-1.  In other words, Unicode 1.1
implements the 16-bit form, contains all of the characters in 10646-1 and
the characters have the same location (binary value) in both codes.

Unicode does not implement the 32-bit, UCS-4 form of 10646-1.

Unicode has more detail than 10646-1 because it describes requirements
for implementing 10646-1.  Unicode also has defined conversion tables
to and from many international, national and industry codes.  Unicode
also cross-references alternate names for the characters.