[HarfBuzz] FreeType/Cairo example

[Khaled Hosny]

I'm trying to write a simple HB test and thought using FreeType/Cairo
would be the shortest path. I got the code to shape the text, but glyph
positions are wrong (at least horizontal positions); some glyphs are too
close, others are spaced out than they should.

I'm not sure what is wrong with the attached code, but I'm not familiar
with any of the FreeType/HarfBuzz/Cairo black magic.

Regards,
 khaled

-- 
 Khaled Hosny
 Egyptian
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