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

	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},