Stylistic Set

Open Type scripting dilemma

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hello folks, i have aquestion about ot scripting.

the font i'm working on is uppercase only and it has a lot of stylistic sets. of course i had to include lowercase glyphs too, but they just mirror the uppercase glyphs. however, for the alternative glyphs, i don't do uc and lc for each one of them, only the uc.

then i put only the uc glyphs in my stylistic sets classes and so for this to work with the lc as well, i'm doing a lookup that changes lowercase into uppercase before each substitution.

feature ss01 {
lookup ss01a { sub @lower by @upper; } ss01a;
lookup ss01b { sub @class_0 by @class_1; } ss01b; # they contain only uppercase
} ss01;