Support sparse masters

googlefonts · Jul 12, 2024 · 20c3373 · 20c3373
1 parent 4c1c521
commit 20c3373
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/Lib/ufo2ft/featureWriters/kernFeatureWriter.py b/Lib/ufo2ft/featureWriters/kernFeatureWriter.py
@@ -587,6 +587,7 @@ def _filterSpacingMarks(self, marks):
             for mark in marks:
                 if all(
                     source.font[mark].width != 0 for source in self.context.font.sources
+                    if mark in source.font
                 ):
                     spacing.append(mark)
             return spacing