Lists Home |
Date Index |
- From: John Cowan <firstname.lastname@example.org>
- To: XML Dev <email@example.com>
- Date: Tue, 11 Aug 1998 12:09:09 -0400
Toby Speight wrote:
> Well, I'm sure there would be plenty here who'd like to know. ASCII
> is a 7-bit character coding scheme - nothing more, nothing less. The
> term "8-bit ASCII" could be used to refer to any of a number of 8-bit
> codes which coincide with ASCII for values under 128: ISO-8859-1,
> ISO-8859-2, ..., ISO-8859-9, ISO-2022-JP (I think), the Windows and
> Macintosh character sets, and others.
ISO/IEC 8859-1 is, or was, reimplemented as an American National
Standard under the title "8-bit American Standard Code for Information
Interchange", i.e. "8-bit ASCII". (I can't find this in the current
ANSI catalog, so it may have been revoked in favor of 8859-1.)
However, this has nothing to do with the charset name "US-ASCII",
which refers only to 7-bit ISO/IEC 646:1991, which is the same as
7-bit ASCII, ANSI X3.4.
> [BTW, when using US-ASCII as an entity character encoding, must one
> declare it as UTF-8, and use other means to ensure that multi-byte
> characters don't occur?]
No, you can declare it as "US-ASCII". In theory, parsers may throw
a fatal error because they don't support that encoding. In practice,
no parser is at all likely to do so.
John Cowan http://www.ccil.org/~cowan firstname.lastname@example.org
You tollerday donsk? N. You tolkatiff scowegian? Nn.
You spigotty anglease? Nnn. You phonio saxo? Nnnn.
Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)
xml-dev: A list for W3C XML Developers. To post, mailto:email@example.com
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:firstname.lastname@example.org the following message;
To subscribe to the digests, mailto:email@example.com the following message;
List coordinator, Henry Rzepa (mailto:firstname.lastname@example.org)