func strings.TrimRightFunc

4 uses

	strings (current package)
		strings.go#L739: func TrimRightFunc(s string, f func(rune) bool) string {
		strings.go#L753: 	return TrimRightFunc(TrimLeftFunc(s, f), f)
		strings.go#L862: 	return TrimRightFunc(s, makeCutsetFunc(cutset))

	go/printer
		printer.go#L499: 	return strings.TrimRightFunc(s, unicode.IsSpace)