[fonttools/fonttools] c5efca: [cu2qu.ufo] skip processing empty glyphs to suppor...

[Cosimo Lupo]

Branch: refs/heads/cu2qu-ignore-empty-glyphs
Home: https://github.com/fonttools/fonttools
Commit: c5efcaef076bc2f60fafd3416a2d5c1bd0b69058
https://github.com/fonttools/fonttools/commit/c5efcaef076bc2f60fafd3416a2d5c1bd0b69058
Author: Cosimo Lupo <cl...@google.com>
Date: 2025-10-11 (Sat, 11 Oct 2025)

Changed paths:
M Lib/fontTools/cu2qu/ufo.py
M Tests/cu2qu/ufo_test.py

Log Message:
-----------
[cu2qu.ufo] skip processing empty glyphs to support sparse kerning masters

This will help with the use case described at https://github.com/googlefonts/fontmake/issues/1158

varLib already treats empty glyphs in non-default 'sparse' masters as non participating in gvar interpolation.
But if a designspace contains a UFO with such empty glyphs, cu2qu rejects them because it expects all input glyphs to have the same number of segments.



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[Cosimo Lupo]

Branch: refs/heads/main

Home: https://github.com/fonttools/fonttools
Commit: c5efcaef076bc2f60fafd3416a2d5c1bd0b69058
https://github.com/fonttools/fonttools/commit/c5efcaef076bc2f60fafd3416a2d5c1bd0b69058
Author: Cosimo Lupo <cl...@google.com>
Date: 2025-10-11 (Sat, 11 Oct 2025)

Changed paths:
M Lib/fontTools/cu2qu/ufo.py
M Tests/cu2qu/ufo_test.py

Log Message:
-----------
[cu2qu.ufo] skip processing empty glyphs to support sparse kerning masters

This will help with the use case described at https://github.com/googlefonts/fontmake/issues/1158

varLib already treats empty glyphs in non-default 'sparse' masters as non participating in gvar interpolation.
But if a designspace contains a UFO with such empty glyphs, cu2qu rejects them because it expects all input glyphs to have the same number of segments.

Commit: 97f810939a922b215622b00a58cf3eee2825505d
https://github.com/fonttools/fonttools/commit/97f810939a922b215622b00a58cf3eee2825505d
Author: Cosimo Lupo <cos...@anthrotype.com>
Date: 2025-10-13 (Mon, 13 Oct 2025)

Changed paths:
M Lib/fontTools/cu2qu/ufo.py
M Tests/cu2qu/ufo_test.py

Log Message:
-----------

Merge pull request #3956 from fonttools/cu2qu-ignore-empty-glyphs

[cu2qu.ufo] skip processing empty glyphs to support sparse kerning masters

Compare: https://github.com/fonttools/fonttools/compare/3c1822544d60...97f810939a92