1687 def splitMultipleSubst(oldSubTable, newSubTable, overflowRecord):  argument
1689 	oldMapping = sorted(oldSubTable.mapping.items())
1708 		del oldSubTable.mapping[key]
1712 def splitAlternateSubst(oldSubTable, newSubTable, overflowRecord):  argument
1714 	if hasattr(oldSubTable, 'sortCoverageLast'):
1715 		newSubTable.sortCoverageLast = oldSubTable.sortCoverageLast
1717 	oldAlts = sorted(oldSubTable.alternates.items())
1736 		del oldSubTable.alternates[key]
1741 def splitLigatureSubst(oldSubTable, newSubTable, overflowRecord):  argument
1743 	oldLigs = sorted(oldSubTable.ligatures.items())
1762 		del oldSubTable.ligatures[key]
1767 def splitPairPos(oldSubTable, newSubTable, overflowRecord):  argument
1768 	st = oldSubTable
1770 	newSubTable.Format = oldSubTable.Format
1771 	if oldSubTable.Format == 1 and len(oldSubTable.PairSet) > 1:
1773 			setattr(newSubTable, name, getattr(oldSubTable, name))
1777 		newSubTable.Coverage = oldSubTable.Coverage.__class__()
1779 		coverage = oldSubTable.Coverage.glyphs
1780 		records = oldSubTable.PairSet
1782 		oldCount = len(oldSubTable.PairSet) // 2
1784 		oldSubTable.Coverage.glyphs = coverage[:oldCount]
1785 		oldSubTable.PairSet = records[:oldCount]
1790 		oldSubTable.PairSetCount = len(oldSubTable.PairSet)
1795 	elif oldSubTable.Format == 2 and len(oldSubTable.Class1Record) > 1:
1796 		if not hasattr(oldSubTable, 'Class2Count'):
1797 			oldSubTable.Class2Count = len(oldSubTable.Class1Record[0].Class2Record)
1799 			setattr(newSubTable, name, getattr(oldSubTable, name))
1804 		oldSubTable.DontShare = True
1808 		newSubTable.Coverage = oldSubTable.Coverage.__class__()
1809 		newSubTable.ClassDef1 = oldSubTable.ClassDef1.__class__()
1811 		coverage = oldSubTable.Coverage.glyphs
1812 		classDefs = oldSubTable.ClassDef1.classDefs
1813 		records = oldSubTable.Class1Record
1815 		oldCount = len(oldSubTable.Class1Record) // 2
1818 		oldSubTable.Coverage.glyphs = [g for g in coverage if g not in newGlyphs]
1819 		oldSubTable.ClassDef1.classDefs = {k:v for k,v in classDefs.items() if v < oldCount}
1820 		oldSubTable.Class1Record = records[:oldCount]
1826 		oldSubTable.Class1Count = len(oldSubTable.Class1Record)
1834 def splitMarkBasePos(oldSubTable, newSubTable, overflowRecord):  argument
1836 	classCount = oldSubTable.ClassCount
1847 		oldSubTable.MarkCoverage.glyphs,
1848 		oldSubTable.MarkArray.MarkRecord
1859 	for rec in oldSubTable.BaseArray.BaseRecord:
1866 	newSubTable.Format = oldSubTable.Format
1868 	oldSubTable.MarkCoverage.glyphs = oldMarkCoverage
1869 	newSubTable.MarkCoverage = oldSubTable.MarkCoverage.__class__()
1873 	newSubTable.BaseCoverage = oldSubTable.BaseCoverage
1875 	oldSubTable.ClassCount = oldClassCount
1878 	oldSubTable.MarkArray.MarkRecord = oldMarkRecords
1879 	newSubTable.MarkArray = oldSubTable.MarkArray.__class__()
1882 	oldSubTable.MarkArray.MarkCount = len(oldMarkRecords)
1885 	oldSubTable.BaseArray.BaseRecord = oldBaseRecords
1886 	newSubTable.BaseArray = oldSubTable.BaseArray.__class__()
1889 	oldSubTable.BaseArray.BaseCount = len(oldBaseRecords)