From: Kent Karlsson (email@example.com)
Date: Sun Nov 02 2008 - 09:15:13 CST
Szabolcs Szelp wrote:
> Not considering bustrophaedon,
> even in the described standard behaviour of OH of having the
> characters mirrored when overriden LTR, I believe it is problematic
> that one has to replace the punctuation characters.
> Usually one would think of the LTR and RTL in OH as the same text with
> the same information, ie. the same string of characteres, only
> displayed differently (i.e. other text-flow direction, and mirrored).
> So why do we have to use other characters?
Bidi (in the Unicode sense) and bustrophedon (while in a quite different
way "bidirectional") are unrelated and should not be conflated in any way.
> The passage in the current proposal authored by Michael and me
> contains the passage above cited by Karl, it was included on grounds
> of verbal communication of Michael about the preference "by the
> However, I do believe that it should be open for discussion.
> Karl suggested (privately) having the punctuation included in the OH
> block, alongside with the Bidi_Mirrored=Yes property.
Naa. Bidi_Mirrored is for handling Arabic, Hebrew and similar scripts.
It's NOT for handling bustrophedon, which mirrors *all* glyphs (once)
on every second line. Bidi override controls never mirror characters
which have Bidi_Mirrored=FALSE. Also the bidi overrides do not go well
together with bustrophedon and automatic line breaking. Bustrophedon
is simply a quite different beast from Arabic/Hebrew/etc. Bustrophedon
should simply graphically mirror the entier line, every second line.
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