Content-Type: text/html
Content-Length: 239

failed, that's OK
<br />
size: !=0/!=0<br />
study size: ==0<br />
!select
<br />
sEl!ct
<br />
s!l!ct
<br />
2
<br />
study size: !=0<br />
!2312312
<br />
!
<br />
212.html
<br />
$r.pattern: ^[a-z\d_]+$<br />
$r.options: gI<br />
<br />