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Re: For review: Migrating to Unicode

From: John Cowan <cowan@ccil.org>
Date: Mon, 24 Mar 2008 15:47:00 -0400
To: Frank Ellermann <hmdmhdfmhdjmzdtjmzdtzktdkztdjz@gmail.com>
Cc: www-international@w3.org
Message-ID: <20080324194700.GG25400@mercury.ccil.org>

Frank Ellermann scripsit:

> The book says that I may assume ECMA 48 (ISO 6429), and in
> table 16.1 it claims that 10 control codes are "specified".

That is, Unicode specifies certain aspects of the behavior of
certain control characters, assuming they are as specified
in ISO 6429.  Unicode specifies that LF is a line-breaking
character, for example, and assuming 6429 is in effect,
that specifies part of the behavior of U+000A.

> I fear I missed OS/8, the oldest platforms I recall are /360,
> TOPS/10, BS2000, and TR 440.

TOPS-10 predates OS/8, and in fact most OS/8 software was
developed internally using a cross-assembler that ran on TOPS-10.

> For the use of 0xF0 by format
> tools I guess it is an urban legend that it is derived from
> EBCDIC "V" = "virgin".

I don't know about this 0xF0 at all.

-- 
The man that wanders far                        cowan@ccil.org
from the walking tree                           http://www.ccil.org/~cowan
        --first line of a non-existent poem by:         John Cowan
Received on Monday, 24 March 2008 19:47:38 GMT

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