Re: ASCII vs. MacRoman (was Re: Standard Additions 'read' command - basic questions)
Re: ASCII vs. MacRoman (was Re: Standard Additions 'read' command - basic questions)
- Subject: Re: ASCII vs. MacRoman (was Re: Standard Additions 'read' command - basic questions)
- From: "John W. Baxter" <email@hidden>
- Date: Mon, 19 Jan 2004 15:26:29 -0800
- Envelope-to: email@hidden
On 1/19/2004 14:21, "Chris Page" <email@hidden> wrote:
>
On Jan 19, 2004, at 12:36, Christopher Nebel wrote:
>
>
>
> I'll file a bug, but in the meantime, try using FS (field separator,
>
> ASCII character 28) and RS (record separator, ASCII character 30)
>
> instead -- that's what they were designed for.
>
>
I've always wondered where this is defined. Every piece of
>
documentation I've seen on ASCII fails to fully describe the control
>
characters and their meanings (though it's easy to guess what FS and RS
>
are for). Have you ever seen a detailed definition for FS and RS
>
anywhere? I'd really like to see better documentation on ASCII.
FS, RS, GS (group separator) and I think another XS separator came from the
paper tape days which underlie ASCII (ASCII basically came from Teletype
Corp's 7-level encoding with a few control character name changes).
Paper tape was generally punched in a variable length style with separators
of fields, records, groups, etc being special control lines (ie characters).
CSV is a modern form. (A line on tape was one row of marks and spaces
(holes and no-holes) across the tape.)
The DCn series replaced RU (are you xxx?), WRU (who are you), and the
HERE-IS (my name is) mechanical naming of the machine (and something else).
--John
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