class Capybara::Selector::CSS::Splitter

def split(css)
  selectors = []
  StringIO.open(css.to_s) do |str|
    selector = +''
    while (char = str.getc)
      case char
      when '['
        selector << parse_square(str)
      when '('
        selector << parse_paren(str)
      when '"', "'"
        selector << parse_string(char, str)
      when '\\'
        selector << (char + str.getc)
      when ','
        selectors << selector.strip
        selector.clear
      else
        selector << char
      end
    end
    selectors << selector.strip
  end
  selectors
end