Stumbled over this because fonts build on our build server (running Linux) produce differently ordered contours for a specific glyph which broke hinting. Can reproduce with two glyphs from Noto Sans Regular (NotoSansTest.ufo.zip). Running the following script on Linux and Windows will produce differently ordered contours:
import sys
import booleanOperations
import ufoLib2
u = ufoLib2.Font.open("NotoSansTest.ufo")
for g in u:
if not g.contours:
continue
cs = [c for c in g.contours]
g.clearContours()
p = g.getPointPen()
booleanOperations.union(cs, p)
if sys.platform == "win32":
u.save("test-win.ufo")
else:
u.save("test-lin.ufo")Still drilling down to where this happens.
Stumbled over this because fonts build on our build server (running Linux) produce differently ordered contours for a specific glyph which broke hinting. Can reproduce with two glyphs from Noto Sans Regular (NotoSansTest.ufo.zip). Running the following script on Linux and Windows will produce differently ordered contours:
Still drilling down to where this happens.