@main[]
^try{
	$r[^regex::create[]]
}{
	$exception.handled(1)
	failed, that's OK
}
<br />


$s[  select]
$r[^regex::create[^^\s*]]
size: ^eval($r)/^r.size[]<br />
study size: ^r.study_size[]<br />
^s.match[$r;]{!}
<br />


$s[  sElect]
$r[^regex::create[e][g]]
^s.match[$r;]{!}
<br />


$s[  sElect]
$r[^regex::create[e;gi]]
^s.match[$r;]{!}
<br />


$s[12312312]
$r[^regex::create[3;gn]]
^s.match[$r]
<br />


$s[12312312]
$r[^regex::create[\d+?]]
study size: ^r.study_size[]<br />
^s.match[$r;]{!}
<br />


$s[12312312]
$r[^regex::create[\d+?;U]]
^s.match[$r][]{!}
<br />



$t[^file:list[./;^regex::create[^^212.html^$]]]
$t.name
<br />