Re: how can I write an arabic square root- I think I've understood a little.

From: John Hudson (tiro@tiro.com)
Date: Thu Mar 28 2002 - 03:34:27 EST


At 23:44 3/27/2002, Asmus Freytag wrote:

>That's what's supposed to happen, when system and font designers correctly
>implement the mirrored glyphs.

It might be a good idea if someone explained to us font designers exactly
what is required of us. Some mirrored forms such as the parentheses, are
being handled in character processing, not glyph processing, and I have yet
to see any set of requirements (e.g. in Microsoft's Arabic or Hebrew
OpenType font specs) for font layout features to address any additional
mirror glyph behaviour. I'm happy to provide whatever support is possible,
and to encourage my fellow font developers to do the same, but we generally
rely of software developers to tell us what is needed. We don't make the
technology, we just make the fonts to work with it.

What aspects of mirrored text need to be processed in glyph space?

John Hudson

Tiro Typeworks www.tiro.com
Vancouver, BC tiro@tiro.com

... es ist ein unwiederbringliches Bild der Vergangenheit,
das mit jeder Gegenwart zu verschwinden droht, die sich
nicht in ihm gemeint erkannte.

... every image of the past that is not recognized by the
present as one of its own concerns threatens to disappear
irretrievably.
                                               Walter Benjamin



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