1229 def splitAlternateSubst(oldSubTable, newSubTable, overflowRecord):  argument
1231 	newSubTable.Format = oldSubTable.Format
1232 	if hasattr(oldSubTable, 'sortCoverageLast'):
1233 		newSubTable.sortCoverageLast = oldSubTable.sortCoverageLast
1235 	oldAlts = sorted(oldSubTable.alternates.items())
1254 		del oldSubTable.alternates[key]
1259 def splitLigatureSubst(oldSubTable, newSubTable, overflowRecord):  argument
1261 	newSubTable.Format = oldSubTable.Format
1262 	oldLigs = sorted(oldSubTable.ligatures.items())
1281 		del oldSubTable.ligatures[key]
1286 def splitPairPos(oldSubTable, newSubTable, overflowRecord):  argument
1287 	st = oldSubTable
1289 	newSubTable.Format = oldSubTable.Format
1290 	if oldSubTable.Format == 1 and len(oldSubTable.PairSet) > 1:
1292 			setattr(newSubTable, name, getattr(oldSubTable, name))
1296 		newSubTable.Coverage = oldSubTable.Coverage.__class__()
1298 		coverage = oldSubTable.Coverage.glyphs
1299 		records = oldSubTable.PairSet
1301 		oldCount = len(oldSubTable.PairSet) // 2
1303 		oldSubTable.Coverage.glyphs = coverage[:oldCount]
1304 		oldSubTable.PairSet = records[:oldCount]
1309 		oldSubTable.PairSetCount = len(oldSubTable.PairSet)
1314 	elif oldSubTable.Format == 2 and len(oldSubTable.Class1Record) > 1:
1315 		if not hasattr(oldSubTable, 'Class2Count'):
1316 			oldSubTable.Class2Count = len(oldSubTable.Class1Record[0].Class2Record)
1318 			setattr(newSubTable, name, getattr(oldSubTable, name))
1323 		oldSubTable.DontShare = True
1327 		newSubTable.Coverage = oldSubTable.Coverage.__class__()
1328 		newSubTable.ClassDef1 = oldSubTable.ClassDef1.__class__()
1330 		coverage = oldSubTable.Coverage.glyphs
1331 		classDefs = oldSubTable.ClassDef1.classDefs
1332 		records = oldSubTable.Class1Record
1334 		oldCount = len(oldSubTable.Class1Record) // 2
1337 		oldSubTable.Coverage.glyphs = [g for g in coverage if g not in newGlyphs]
1338 		oldSubTable.ClassDef1.classDefs = {k:v for k,v in classDefs.items() if v < oldCount}
1339 		oldSubTable.Class1Record = records[:oldCount]
1345 		oldSubTable.Class1Count = len(oldSubTable.Class1Record)
1353 def splitMarkBasePos(oldSubTable, newSubTable, overflowRecord):  argument
1355 	classCount = oldSubTable.ClassCount
1366 		oldSubTable.MarkCoverage.glyphs,
1367 		oldSubTable.MarkArray.MarkRecord
1377 	for rec in oldSubTable.BaseArray.BaseRecord:
1384 	newSubTable.Format = oldSubTable.Format
1386 	oldSubTable.MarkCoverage.glyphs = oldMarkCoverage
1387 	newSubTable.MarkCoverage = oldSubTable.MarkCoverage.__class__()
1388 	newSubTable.MarkCoverage.Format = oldSubTable.MarkCoverage.Format
1392 	newSubTable.BaseCoverage = oldSubTable.BaseCoverage
1394 	oldSubTable.ClassCount = oldClassCount
1397 	oldSubTable.MarkArray.MarkRecord = oldMarkRecords
1398 	newSubTable.MarkArray = oldSubTable.MarkArray.__class__()
1401 	oldSubTable.MarkArray.MarkCount = len(oldMarkRecords)
1404 	oldSubTable.BaseArray.BaseRecord = oldBaseRecords
1405 	newSubTable.BaseArray = oldSubTable.BaseArray.__class__()
1408 	oldSubTable.BaseArray.BaseCount = len(oldBaseRecords)