From: Asmus Freytag (asmusf@ix.netcom.com)
Date: Thu May 13 2004 - 02:36:23 CDT
At 07:09 PM 5/12/2004, Chris Jacobs wrote:
> > The Unicode Standard is a plain text standard, *not* a
> > text layout standard. See Section 2.9 of The Unicode
> > Standard, Version 4.0 for what the standard has to say
> > on this.
> >
> > The extent of directional layout required of a *plain text*
> > standard is the bidirectional algorithm, which sorts
> > out how a (horizontal) *line* of text is laid out when
> > text of opposite directions is mixed. Beyond that, you
> > are on to higher level protocols for textual layout.
> > Those are out of scope for the Unicode Standard.
> >
> > --Ken
>
>And even for a "(horizontal) *line* of text"
>
>If you have rich text, so you can choose to use either the bidi algorithm or
>the rich text facilities to do the bidi.
>Then the rich text facilities are preferable?
>
>Right?
Not necessarily. Depends a lot on what you meant to say by 'either / or'
here. Please read the relevant text on Higher Level Protocols in the latest
edition of UAX#9
http://www.unicode.org/reports/tr9
It's very clear about the role of higher level (rich text) protocols.
A./
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