func LastIndexFunc(s []byte, f func(r rune) bool) int {
	return lastIndexFunc(s, f, true)
}

// indexFunc is the same as IndexFunc except that if
// truth==false, the sense of the predicate function is
// inverted.
func indexFunc(s []byte, f func(r rune) bool, truth bool) int {
	start := 0
	for start < len(s) {
		wid := 1
		r := rune(s[start])
		if r >= utf8.RuneSelf {
			r, wid = utf8.DecodeRune(s[start:])
		}

# CL 102320044 syscall: implement syscall.Getppid() on Windows, Alan Shreve <******@****.***>
pkg syscall (windows-386), const TH32CS_INHERIT = 2147483648
pkg syscall (windows-386), const TH32CS_INHERIT ideal-int
pkg syscall (windows-386), const TH32CS_SNAPALL = 15
pkg syscall (windows-386), const TH32CS_SNAPALL ideal-int
pkg syscall (windows-386), const TH32CS_SNAPHEAPLIST = 1

	PDEPD R1, R2, R3                        // 7c231138
	PEXTD R1, R2, R3                        // 7c231178
	PLBZ 1234(R1), $0, R3                   // 06000000886104d260000000
	// Note, PLD crosses a 64B boundary, and a nop is inserted between PLBZ and PLD
	PLD 1234(R1), $0, R3                    // 04000000e46104d2
	PLFD 1234(R1), $0, F3                   // 06000000c86104d2
	PLFS 1234567890(R4), $0, F3             // 06004996c06402d2

	if strings.Contains(f, "\n") {
		panic("feature contains newlines: " + f)
	}

	if _, dup := w.features[f]; dup {
		panic("duplicate feature inserted: " + f)
	}
	w.features[f] = true

	if verbose {
		log.Printf("feature: %s", f)
	}
}

func needApproval(filename string) bool {
	name := filepath.Base(filename)