# File lib/sass/script/value/helpers.rb, line 163 def parse_complex_selector(value, name = nil, allow_parent_ref = false) selector = parse_selector(value, name, allow_parent_ref) return seq if selector.members.length == 1 err = "#{value.inspect} is not a complex selector" err = "$#{name.to_s.tr('_', '-')}: #{err}" if name raise ArgumentError.new(err) end