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Re: [emacs-bidi] Status of BIDI implementation in Emacs

From: Eli Zaretskii
Subject: Re: [emacs-bidi] Status of BIDI implementation in Emacs
Date: Sat, 23 Feb 2002 22:37:50 +0200

> Date: Sat, 23 Feb 2002 21:51:28 +0200 (IST)
> From: Tzafrir Cohen <address@hidden>
> I wasn't following things here very closely. One question: is one of your
> goals compatibility to the unicode bidi algorithm?

Yes, definitely.  The implementation is very different (because it
must be sequential, i.e. one that is called fior every character in
the buffer), but it's designed to produce the same results as
prescribed by UAX#9.

With all its deficiencies, UAX#9 is a de-facto standard, so I don't
think Emacs can deviate from it, because lots of text out there
assumes UAX#9 compliance, and would display incorrectly if we don't

We will have to fix any blatant misfeatures in UAX#9 by inserting
bidi control codes at strategic places.

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