The main problem in a Bidi word processor is not how to transform logical
to visual format. As Tzafrir Cohen mentioned, there are a number of
libraries available for this purpose, which all generally produce the same
results, the exceptions being for rather off-beat cases.
The main problem is with the *interface*, mainly what should Delete,
Backspace etc... perform, where the caret (or text cursor) should go after
given operations, how to handle selection, to name a few important issues.
For anybody considering doing work on a Bidi text editor or word
processor, it is worth knowing that the SII ("Machon HaTekanim" in Hebrew)
has published for comments a draft standard for such an interface. In
view of the very small number of comments received, it is likely to become
a standard very close to the present text, once all the formal procedure
is completed. The SII web site being in shambles, for what I know, I
don't know where one can download this document. Whoever is interested
can send me a private e-mail, and I will send her/him the document.
Shalom (Regards), Mati
Bidi Architect
Globalization Center Of Competency - Bidirectional Scripts
IBM Israel
Phone: +972 2 5870999 ext. 1202 Fax: +972 2 5870333 Mobile:
+972 52 554160
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