code: function srcValueParse (value) {
      var list = [];
      var src;
  
      RE_FONT_URL.lastIndex = 0;
      while ((src = RE_FONT_URL.exec(value)) !== null) {
  
          src = src[1];
          src = unquotation(src.trim());
          //src = normalize(src);
  
          list.push(src);
      }
  
      return list;
  }
docs: /*
  提取 @font-face src 列表
  @param   {String}    url("../test.css"), url(file.css)
  @return  {Array}