{0x1d173, 0x1d17a, 1},
		{0xe0001, 0xe0020, 31},
		{0xe0021, 0xe007f, 1},
		{0xf0000, 0xffffd, 1},
		{0x100000, 0x10fffd, 1},
	},
	LatinOffset: 2,
}

var _Cc = &RangeTable{
	R16: []Range16{
		{0x0000, 0x001f, 1},
		{0x007f, 0x009f, 1},
	},
	LatinOffset: 2,
}

var _Cf = &RangeTable{
	R16: []Range16{
		{0x00ad, 0x0600, 1363},
		{0x0601, 0x0605, 1},
		{0x061c, 0x06dd, 193},

		Scripts,
	}
	for _, m := range maps {
		for name, tab := range m {
			i := 0
			for i < len(tab.R16) && tab.R16[i].Hi <= MaxLatin1 {
				i++
			}
			if tab.LatinOffset != i {
				t.Errorf("%s: LatinOffset=%d, want %d", name, tab.LatinOffset, i)
			}
		}
	}
}

func TestSpecialCaseNoMapping(t *testing.T) {
	// Issue 25636
	// no change for rune 'A', zero delta, under upper/lower/title case change.

// The two slices must be in sorted order and non-overlapping.
// Also, R32 should contain only values >= 0x10000 (1<<16).
type RangeTable struct {
	R16         []Range16
	R32         []Range32
	LatinOffset int // number of entries in R16 with Hi <= MaxLatin1
}

// Range16 represents of a range of 16-bit Unicode code points. The range runs from Lo to Hi
// inclusive and has the specified stride.
type Range16 struct {

		{"Range16.Stride", Field, 0},
		{"Range32", Type, 0},
		{"Range32.Hi", Field, 0},
		{"Range32.Lo", Field, 0},
		{"Range32.Stride", Field, 0},
		{"RangeTable", Type, 0},
		{"RangeTable.LatinOffset", Field, 1},
		{"RangeTable.R16", Field, 0},
		{"RangeTable.R32", Field, 0},
		{"Regional_Indicator", Var, 10},
		{"Rejang", Var, 0},
		{"ReplacementChar", Const, 0},
		{"Runic", Var, 0},