func (w *SnowballWord) FitsInRV(x int) bool {
	return w.RVstart <= len(w.RS)-x
}
func (w *SnowballWord) FitsInRV(x int) bool {
	return w.RVstart <= len(w.RS)-x
}
func ( w * SnowballWord ) FitsInRV ( x int ) bool { return w . RVstart <= len ( w . RS ) - x }
// Returns true if `x` runes would fit into RV.
//
Returns true if x runes would fit into RV .