From: Ernest Cline (firstname.lastname@example.org)
Date: Tue Mar 30 2004 - 01:26:56 EST
> [Original Message]
> From: John Cowan <email@example.com>
> Mark Davis scripsit:
> > Some more details. Usually, by 'extension' one means a superset of
> > the mappings. windows-1252 is formally disjoint from iso-8859-1 --
> > not a superset -- since it has mappings for 0x80..0x9F which are
> > different from iso-8859-1's mappings for the same bytes.
> I don't have access to ISO 8859-1 itself, but ECMA-94 (1986), which is
> supposed to be equivalent, doesn't actually define anything for
> So I think the term "superset" is in fact justified.
ECMA-94 says nothing about the C1 control set, it specifies only the
G0 and G1 graphics sets, but ECMA-43 (ISO 4873) does. The octets
08/14 and 08/15 if present are only allowed to be used for the SS2
and SS3 control functions according to ECMA-43. If ISO 8859 says
anything about the control sets, I think it is safe to say that at the very
least it references ISO 4873. In that case, the windows-1252 use of
0x8E as LATIN CAPITAL LETTER Z WITH CARON would violate
that standard. Also RFC 1345 indicates that the standard C0 and C1
control sets of ISO 6429 (ECMA-48) are used with ISO 8859-1, but I
can't be certain if that is just the usual assumption or explicitly given
in ISO 8859.
In any case, windows-1252 is not ISO-2022 (ECMA-35) friendly.and
given the existence of LATIN CAPITAL LETTER Z WITH CARON
as 0x8E, it certainly does not fit nicely into the ECMA/ISO family
of interrelated character set standards, even if one overlooks the
fact that it uses graphics characters in the C1 control set.
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