织梦dede:channel标签里调用{dede:field.seotitle/}[field:seotitle/]

网上很多人说 dede:channel标签里调用{dede:field.seotitle /}只要把{dede:field.seotitle /}改成[field:seotitle/] 就行了
可是自己试了下还是不行.最后才发现原来要在include\taglib\channel.lib.php   找到下面黑色代码,加入下面红色代码 seotitle,即可位置在78行

 if($type=='top')

    {

        $sql = "SELECT id,typename,seotitle,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath

          From `dede_arctype` WHERE reid=0 And ishidden<>1 order by sortrank asc limit 0, $line ";

    }

    else if($type=='son')

    {

        if($typeid==0) return '';

        $sql = "SELECT id,typename,seotitle,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath

          From `dede_arctype` WHERE reid='$typeid' And ishidden<>1 order by sortrank asc limit 0, $line ";

    }

    else if($type=='self')

    {

        if($reid==0) return '';

        $sql = "SELECT id,typename,seotitle,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath

            FROM `dede_arctype` WHERE reid='$reid' And ishidden<>1 order by sortrank asc limit 0, $line ";

    }