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I'm designing a handwriten font wich contain many alternate sets of characters and I programmed a calt feature to randomize it. The feature contains a lot of lines mixing and conditioning the substition of each character. I thing the sintaxis is fine and the replacement works fine too, but when I increase the number of characters in each of the classes used in the code the output panel shows the following warning:
[FATAL] GSUB feature 'ÿÿÿÿ' causes overflow of offset to a subtable (0x1140a)
(I don't know why the name of the feature is swhown without the correct name).
I guess it means the code becomes too heavy but searching and reading a lot of posts of similar bugs I concluded that the responsible of this issue was the program. So I decided to try compiling the font in an older version (FL 5.0) and there aren't any problem and the compiled font works fine.
Please tell me what can I do to improve my version of FL to avoid this issue. Any comment will be appreciated.