8000 [varLib] cpsp feature is not variable · Issue #995 · fonttools/fonttools · GitHub
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[varLib] cpsp feature is not variable #995

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jenskutilek opened this issue Jul 5, 2017 · 1 comment
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[varLib] cpsp feature is not variable #995

jenskutilek opened this issue Jul 5, 2017 · 1 comment

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@jenskutilek
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In the attached demo build folder, the master fonts contain 1 kern pair and 1 cpsp lookup. When building a variable font with varLib, the kerning pair becomes variable, but the cpsp value is static.

The cpsp values in the wdth -1 master has XPlacement = 1, XAdvance = 2, and in the wdth 0 master XPlacement = 40, XAdvance = 80. The variable font only contains the 40/80 values.

More precisely, it looks like there are entries for the 40 and 80 in the variation item store in GDEF (item index 0 and 1), but they are not used in the cpsp lookup (Lookup Index 0).

Variable Test cpsp.zip
@jenskutilek jenskutilek mentioned this issue Jul 5, 2017
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@jenskutilek
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Think I’ve found it ...

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