[HarfBuzz] Glyph info in case of TTB direction

Fri Feb 7 10:46:48 UTC 2020

Hi ,

I am trying to understand offset and advance values of glyph , glyph
position , in case of TTB paragraph direction in harfbuzz version 2.2.0 but
couldn't find any documentation . I am getting negative offset during
shaping . could anyone explain why it is so and its meaning .

-- 
*Cheers :)*
*Vishal Gautam*
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