From: Peter Kirk (peterkirk@qaya.org)
Date: Wed Mar 24 2004 - 13:33:27 EST
On 24/03/2004 08:24, Peter Constable wrote:
>>From: unicode-bounce@unicode.org [mailto:unicode-bounce@unicode.org]
>>
>>
>On Behalf
>
>
>>Of Peter Kirk
>>
>>
>
>
>
>>It seems strangely inconsistent to me that Unicode has detailed
>>
>>
>controls
>
>
>>for horizontal layout direction and the complex bidi algorithm, but
>>
>>
>has
>
>
>>nothing for vertical layout.
>>
>>
>
>The bidi embedding and overrides are needed to maintain legibility of
>the text is certain situations. Orientation controls for CJK text are
>not needed to ensure legibility. For instance, given an encoded sequence
>< a, b, c, space, D, E, F >, it isn't clear whether it should appear as
>
>abc FED
>
>or
>
>FED abc
>
>This kind of problem does not arise in CJK text.
>
>The orientation of CJK text is a presentation issue that is out of scope
>for Unicode.
>
>
>
Well, surely there is at least in principle an ambiguity between
D
abc E
F
and
abc
D
E
F
-- Peter Kirk peter@qaya.org (personal) peterkirk@qaya.org (work) http://www.qaya.org/
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