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In a project that uses cffsubr, we noticed FamilyOtherBlues being dropped from the font. This seems to be caused by +F option being the default. While this optimization may be harmless, it is not something that should happen during subroutinization, so i disable this and other optimization options just in case.
khaledhosny
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Mar 25, 2026
This and adobe-type-tools/cffsubr#34 should prevent optimizing FamilyOtherBlues when identical to OtherBlues.
It does not seem to be supported anymore. Fixes: File "<string>", line 70, in build_extension TypeError: copy_file() got an unexpected keyword argument 'dry_run'
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In a project that uses cffsubr, we noticed FamilyOtherBlues being dropped from the font. This seems to be caused by +F option being the default. While this optimization may be harmless, it is not something that should happen during subroutinization, so i disable this and other optimization options just in case.