自动转换4位尾号为网址, 修复包含表情的链接
百度贴吧 <灰机汉化组吧> 网址自动转换
/ * e.g.
* input: 尾号2902
* output: <a href=\"http://smp.yoedge.com/view/omnibus/1002902\" target=\"_blank\">http://smp.yoedge.com/view/omnibus/1002902</a>
*/
/ * e.g.
* input: ht<img class="BDE_Smiley" pic_type="1" width="30" height="30" src="https://tb2.bdstatic.com/tb/editor/images/face/i_f27.png?t=20140803">tp://sm<img class="BDE_Smiley" pic_type="1" width="30" height="30" src="https://tb2.bdstatic.com/tb/editor/images/face/i_f33.png?t=20140803">p.yoedge.com/view/omnibus/1001949
* output: <a href=\"http://smp.yoedge.com/view/omnibus/1001949\" target=\"_blank\">http://smp.yoedge.com/view/omnibus/1001949</a>
*/