JVM auto-detection knows how to work with:

* Operation-system specific locations: Linux, macOS, Windows
* Package Managers: https://asdf-vm.com/#/[Asdf-vm], https://github.com/shyiko/jabba[Jabba], https://sdkman.io/[SDKMAN!]
* https://maven.apache.org/guides/mini/guide-using-toolchains.html[Maven Toolchain] specifications
* https://www.jetbrains.com/help/idea/sdk.html#jdk-from-ide[IntelliJ IDEA] installations

		"abraham", "isaac",
	)
	testCases = append(testCases,
		testCase{gen3, "abracadabrakazam abraham", "poofkazam lincoln"},
		testCase{gen3, "abrasion abracad", "scrape abracad"},
		testCase{gen3, "abba abram abrasive", "abba abram abrasive"},
		testCase{gen3, "", ""},
	)

	// foo{1,2,3,4} have multiple old strings with an overall common prefix
	// and 1- or 2- byte extensions from the common prefix.
	foo1 := NewReplacer(

	indices []subexpIndex
}

var emptySubexpIndices = []subexpIndex{{"", -1}, {"missing", -1}}

var subexpCases = []subexpCase{
	{``, 0, nil, emptySubexpIndices},
	{`.*`, 0, nil, emptySubexpIndices},
	{`abba`, 0, nil, emptySubexpIndices},
	{`ab(b)a`, 1, []string{"", ""}, emptySubexpIndices},
	{`ab(.*)a`, 1, []string{"", ""}, emptySubexpIndices},
	{`(.*)ab(.*)a`, 2, []string{"", "", ""}, emptySubexpIndices},