func strings.LastIndexAny

4 uses

	strings (current package)
		strings.go#L235: func LastIndexAny(s, chars string) int {

	go/types
		resolver.go#L743: 	if i := strings.LastIndexAny(path, `/\`); i > 0 {

	google.golang.org/protobuf/encoding/protojson
		well_known_types.go#L814: 	j := strings.LastIndexAny(s, "Z-+") // start of timezone field

	testing
		testing.go#L810: 		} else if index := strings.LastIndexAny(file, `/\`); index >= 0 {