Hi, my name is leone and these days I'm working on a small project on my own which make cursive english font using GSUB - chaining contextual substitute (coverage based) (which will be applied on my android phone)
the problem is I can't figure it out how to organize backtrack, lookahead Glyph coverage for the first and last character (For example 'x' & 'g' in "xyzabcdefg") What should I set backtrack glyph for 'x' and lookahead glyph for 'g'? every character i designed has 1 Ini (which has no previous latin glyph, but has latin glyph after it) 1 Fin (which has latin glypf in front of it, no latin glyph after itself) 26 Mid (which has latin glyph both front and end of it) abcd <-- b and c should display as Mid form, a as Ini form, and d as Fin form. I tried to figure out how harfbuzz engine process GSUB table but failed ( T_T ) Please tell me how I should organize backtrack, lookahead Glyph coverage for Ini and Fin. Thank you sorry If I wrote this in any bad manner and for my bad english.
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