code: def parse_css (url_data):
      
      lineno = 0
      linkfinder = linkparse.css_url_re.finditer
      strip_comments = linkparse.strip_c_comments
      for line in strip_comments(url_data.get_content()).splitlines():
          lineno += 1
          for mo in linkfinder(line):
              column = mo.start("url")
              url = strformat.unquote(mo.group("url").strip())
              url_data.add_url(url, line=lineno, column=column)
docs: Parse a CSS file for url() patterns.