As an illustration, let's say I'd like to render Biblical Hebrew, solely using Harfbuzz.
BIDI should not be required, since we only have Hebrew characters with diacritics, and basic punctuation marks (mainly semicolons...), all in RTL. It would be straightforward using a font like Arial.ttf. But I'm trying to simulate the Android environment. So for instance, I would have to use DroidSansHebrew-Regular.ttf for the characters and diacritics and DroidSans.ttf for punctuation. Note that I don't plan to use advanced solutions like fontconfig at this stage. Do I need to itemize the text into runs with the same font, prior to shaping or is there a trick (e.g. at the Freetype or OpenType levels) for handling, say, a "virtual font made of two fonts"? Thanks! Ariel http://chronotext.org
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