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glyf: setCoordinates must not modify input coord parameter

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make a copy instead
This commit is contained in:
Cosimo Lupo 2019-04-02 10:45:36 +01:00
parent fb914c93c4
commit a571eee8d6
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GPG Key ID: 20D4A261E4A0E642
1 changed files with 2 additions and 3 deletions
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5
Lib/fontTools/ttLib/tables/_g_l_y_f.py
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@ -379,8 +379,7 @@ class table__g_l_y_f(DefaultTable.DefaultTable):
topSideY = coord[-2][1]
bottomSideY = coord[-1][1]
for _ in range(4):
del coord[-1]
coord = coord[:-4]
if glyph.isComposite():
assert len(coord) == len(glyph.components)
@ -391,7 +390,7 @@ class table__g_l_y_f(DefaultTable.DefaultTable):
assert len(coord) == 0
else:
assert len(coord) == len(glyph.coordinates)
glyph.coordinates = coord
glyph.coordinates = GlyphCoordinates(coord)
glyph.recalcBounds(self)