Method AddBackMatcher

expand.go:68–70

AddBackMatcher reduces the previous set of elements on the stack to those that match the matcher, and adds them to the current set. It returns a new Selection object containing the current Selection combined with the filtered previous one

(m Matcher)

// It returns a new Selection object containing the current Selection combined
// with the filtered previous one
func (s *Selection) AddBackMatcher(m Matcher) *Selection {
	return s.AddSelection(s.prevSel.FilterMatcher(m))
}