To follow up on this thread:
It appears that ASCII is in fact a defined term in the Unicode glossary,
and this term is sufficiently broad.
http://unicode.org/glossary/#ASCII
ASCII is sufficient to identify the range 0 - 127, whether that is
simply a "range", "characters", "code points", or "scalar values".
(Since they are all the same in that range 0 - 127.)
This leaves open the question of how to define the range that is not 0 -
127, but is 128 -> onwards. An e-mail will follow on the topic...
Sean
***
ASCII. (1)The American Standard Code for Information Interchange, a
7-bit coded character set for information interchange. It is the U.S.
national variant of ISO/IEC 646 and is formally the U.S. standard ANSI
X3.4. It was proposed by ANSI in 1963 and finalized in 1968. (2) The set
of 128 Unicode characters from U+0000 to U+007F, including control codes
as well as graphic characters. (3) ASCII has been incorrectly used to
refer to various 8-bit character encodings that include ASCII characters
in the first 128 code points.
