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Re: Bytext FAQ available, bidi security
Hi,
The problem with bidi algorithm reversablity cannot be solved with any
combination of bidi control marks as long as the mirroring step is
there, also in the real world its not unique too..., the only way I
can find to make it unique, is to somehow set the background color of
each glyph, to the bidi level of the corresponding character.
On Sun, 10 Feb 2002, Bernard Miller wrote:
> Hello,
> Security is a hot topic now that IDN documents are approaching finalization.
> The Bytext FAQ covers some solutions that are unique to Bytext such as a
> full set of “Control Pictures” and the “fallback glyphs” property. Start at
> the homepage: www.bytext.org.
>
> I’m also considering changing the first placeholder (Bytext terminology) of
> each character to represent an East Asian Width variant instead of an
> implicit bidirectionality variant (another term specific to Bytext). This
> would probably involve dumping the whole notion of an implicit bidi variant
> altogether and just rely on 2 control characters for all bidi needs. That
> way all bidi levels can be systematically visualized with 2 simple unique
> glyphs, if desired. I think this is what Gaspar had in mind for a reversable
> bidi algorithm. It also seems to be a better match with the way bidi would
> make sense to be implemented in a full markup environment, so you eliminate
> all this overriding of the algorithm. Also of course you get the whole
> benefit that 2 control characters are inherently more understandable (than
> 7) to the people who have to use them, which is inherently more secure. I’d
> be happy to get opinions on the matter.
>
> Bernard
>
> --
> Linux-UTF8: i18n of Linux on all levels
> Archive: http://mail.nl.linux.org/linux-utf8/
>
--
Behdad Esfahbod 23 Bahman 1380, 2002 Feb 12
<behdad at bamdad dot org> [Finger for Geek Code]
Don't look now, but the man in the moon is laughing at you.
--
Linux-UTF8: i18n of Linux on all levels
Archive: http://mail.nl.linux.org/linux-utf8/