/usr/lib/python3/dist-packages/ufoLib/test/testdata/TestFont1 (UFO2).ufo/features.fea is in python3-ufolib 2.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | @myClass = [A B];
feature liga {
sub A A by b;
} liga;
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