commit f48051af2391705e13e316437f7b05c2c34b583a
author Nikolaus Waxweiler <nikolaus.waxweiler@daltonmaag.com> Wed Jun 12 14:00:54 2019 +0100
committer Nikolaus Waxweiler <nikolaus.waxweiler@daltonmaag.com> Fri Jun 14 10:05:48 2019 +0100
tree 93e50c70677b6bd24053eba2136a671c150f881d
parent bcb0761202db01d96f173184b64a970fbd2624b7

Fix corrupt class-based pair kerning table merging

Lib/fontTools/varLib/merger.py

diff --git a/Lib/fontTools/varLib/merger.py b/Lib/fontTools/varLib/merger.py
index b4b1705..d92eb7f 100644
--- a/Lib/fontTools/varLib/merger.py
+++ b/Lib/fontTools/varLib/merger.py
@@ -2,6 +2,7 @@
 Merge OpenType Layout tables (GDEF / GPOS / GSUB).
 """
 from __future__ import print_function, division, absolute_import
+import copy
 from fontTools.misc.py23 import *
 from fontTools.misc.fixedTools import otRound
 from fontTools.misc import classifyTools
@@ -455,7 +456,7 @@
 					exemplarGlyph = next(iter(classSet))
 					klass = classDef2.get(exemplarGlyph, 0)
 					rec2 = oldClass2Records[klass]
-				class2Records.append(rec2)
+				class2Records.append(copy.deepcopy(rec2))
 			class1Records.append(rec1new)
 		new_matrices.append(class1Records)
 	matrices = new_matrices