val dot = '.'.code.toByte().toInt()
    when (val xy = readVariableLengthLong()) {
      in 0L until 40L -> {
        result.writeDecimalLong(0)
        result.writeByte(dot)
        result.writeDecimalLong(xy)
      }
      in 40L until 80L -> {
        result.writeDecimalLong(1)
        result.writeByte(dot)
        result.writeDecimalLong(xy - 40L)
      }
      else -> {

	if !evacuated(b) {
		// TODO: reuse overflow buckets instead of using new ones, if there
		// is no iterator using the old buckets.  (If !oldIterator.)

		// xy contains the x and y (low and high) evacuation destinations.
		var xy [2]evacDst
		x := &xy[0]
		x.b = (*bmap)(add(h.buckets, oldbucket*uintptr(t.BucketSize)))
		x.k = add(unsafe.Pointer(x.b), dataOffset)
		x.e = add(x.k, abi.MapBucketCount*8)

	if !evacuated(b) {
		// TODO: reuse overflow buckets instead of using new ones, if there
		// is no iterator using the old buckets.  (If !oldIterator.)

		// xy contains the x and y (low and high) evacuation destinations.
		var xy [2]evacDst
		x := &xy[0]
		x.b = (*bmap)(add(h.buckets, oldbucket*uintptr(t.BucketSize)))
		x.k = add(unsafe.Pointer(x.b), dataOffset)
		x.e = add(x.k, abi.MapBucketCount*2*goarch.PtrSize)

	if !evacuated(b) {
		// TODO: reuse overflow buckets instead of using new ones, if there
		// is no iterator using the old buckets.  (If !oldIterator.)

		// xy contains the x and y (low and high) evacuation destinations.
		var xy [2]evacDst
		x := &xy[0]
		x.b = (*bmap)(add(h.buckets, oldbucket*uintptr(t.BucketSize)))
		x.k = add(unsafe.Pointer(x.b), dataOffset)
		x.e = add(x.k, abi.MapBucketCount*4)

//   death tests; though it lacks many features you can find in PCRE
//   or POSIX extended regex syntax.  For example, we don't support
//   union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and
//   repetition count ("x{5,7}"), among others.
//
//   Below is the syntax that we do support.  We chose it to be a
//   subset of both PCRE and POSIX extended regex, so it's easy to

//   death tests; though it lacks many features you can find in PCRE
//   or POSIX extended regex syntax.  For example, we don't support
//   union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and
//   repetition count ("x{5,7}"), among others.
//
//   Below is the syntax that we do support.  We chose it to be a
//   subset of both PCRE and POSIX extended regex, so it's easy to

					Priority:                2,
					DeleteMarkerReplication: DeleteMarkerReplication{Status: Disabled},
					DeleteReplication:       DeleteReplication{Status: Enabled},
					Filter:                  Filter{Prefix: "xy", And: And{}, Tag: Tag{Key: "k1", Value: "v1"}},
				},
				{
					Status:                  Enabled,
					Priority:                1,
					DeleteMarkerReplication: DeleteMarkerReplication{Status: Enabled},

	// equivalent points can be represented by different Go values.
	_ incomparable

	// The point is internally represented in extended coordinates (X, Y, Z, T)
	// where x = X/Z, y = Y/Z, and xy = T/Z per https://eprint.iacr.org/2008/522.
	x, y, z, t field.Element
}

type incomparable [0]func()

func checkInitialized(points ...*Point) {
	for _, p := range points {

"^(?:^(foo|bar|[A-Z])$)$"
-;-;-;-
0-1 0-1;0-1 0-1;0-1 0-1;0-1 0-1
"^(?:^(foo|bar|[A-Z])$)"
-;-;-;-
0-1 0-1;0-1 0-1;0-1 0-1;0-1 0-1
"(?:^(foo|bar|[A-Z])$)$"
-;-;-;-
0-1 0-1;0-1 0-1;0-1 0-1;0-1 0-1
strings
""
"XY"
regexps
"^(foo|bar|[A-Z])$"
-;-;-;-
-;-;-;-
"^(?:^(foo|bar|[A-Z])$)$"
-;-;-;-
-;-;-;-
"^(?:^(foo|bar|[A-Z])$)"
-;-;-;-
-;-;-;-
"(?:^(foo|bar|[A-Z])$)$"
-;-;-;-
-;-;-;-
strings

00000190  bd dc 44 fc 58 1d bc 9e  3a 0d 3b 61 13 d6 33 1b  |..D.X...:.;a..3.|
000001a0  97 a8 67 bf e6 d9 1d 34  69 70 93 4a 6c 28 88 01  |..g....4ip.Jl(..|
000001b0  01 9d 78 59 c0 58 66 c3  70 e4 ba 74 e6 0f f7 27  |..xY.Xf.p..t...'|
000001c0  8b dd 05 ac 0d 99 dc e9  c8 2f 16 ee 59 53 91 d7  |........./..YS..|
000001d0  28 27 db ad 85 e6 d0 72  28 81 31 e1 e7 bf dd 95  |('.....r(.1.....|