I have a goroutine with a stack that is reported by gleak as:

      goroutine 1713 [select]
          istio.io/istio/pkg/kube/krt.(*processorListener[...]).run(0x109b4c820) at krt/processor.go:171
          k8s.io/apimachinery/pkg/util/wait.(*Group).Start.func1() at wait/wait.go:72
          created by k8s.io/apimachinery/pkg/util/wait.(*Group).Start in goroutine 1781 at wait/wait.go:70

I would like to be able to match this exactly with IgnoreTopFunction and include state (like gleak.IgnoringTopFunction("istio.io/istio/pkg/kube/krt.(*processorListener[...]).run [select]")) , but am not currently able to do that because of how the topfname string is parsed.

It should also be able to handle prefix matching, like gleak.IgnoringTopFunction("istio.io/istio/pkg/kube/krt.(*processorListener[...])") as well

Proposed solution:
IgnoreTopFunction can look at the last index of [ instead of the first, and validate that the last index of ] is at the end of string before setting the expectedState field.