RE: Indic editing (was: RE: The real solution)

From: John Hudson (tiro@tiro.com)
Date: Wed Nov 28 2001 - 08:31:51 EST


At 03:32 11/28/2001, Marco Cimarosti wrote:

>James Kass wrote:
> > Is the repha supposed to be a spacing mark? If not, doesn't
> > a non-spacing mark need to be applied to a space or spacing
> > mark to avoid display problems?
>
>I don't think that Unicode requires that a non spacing mark *has* to be
>placed on something in order to be displayable. However, some fonts may
>chose to represent a stand-alone non spacing mark as floating on some
>default glyph, for either technological or esthetic reasons.

Unicode does not require it, but it is the 'fallback rendering' method
specified in section 5:14 of the Unicode Standard v3.0. It is also
specified in Microsoft's Indic OpenType font specification:

         http://www.microsoft.com/typography/otspec/indicot/

where it is used to handle invalid mark placement. I find this a good
approach, because it makes it very easy to catch mistakes when I'm typing:
if I see a big dotted circle in the middle of my text, I know that I've
done something wrong.

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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