# File lib/sass/script/tree/list_literal.rb, line 29 def to_sass(opts = {}) return "()" if elements.empty? members = elements.map do |v| if element_needs_parens?(v) "(#{v.to_sass(opts)})" else v.to_sass(opts) end end return "(#{members.first},)" if separator == :comma && members.length == 1 members.join(sep_str(nil)) end