From: Erik van der Poel (erik@vanderpoel.org)
Date: Tue Jun 14 2005 - 00:29:53 CDT
> So pretty much do we have the technology today to individually color both
> regular joining characters and also parts of ligatures then?
The OpenType spec appears to include fairly advanced mechanisms (see
e.g. contextual substitution), but there may not be very many fonts that
include ligature component info suitable for coloring in the way we have
been discussing. I'm guessing that the obligatory ligatures normally
consist of single glyphs (not multiple glyphs with positioning info).
There probably aren't very many system libraries and applications that
support ligature component coloring either. Maybe someone can mention
the names of fonts, system libraries and/or applications that actually
support this. Adobe, Apple, Microsoft?
http://www.microsoft.com/typography/otspec/gsub.htm
Erik
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