or download this
@L=(0,map{push@C,lc=~/./g}<>};
---- Results in ----
@L=(0,map{push@C,lc=~/./g}<>};sub p{$_=pop@n}sub w{push@n,@_}while($n<
+@C){$_=$C[$n++];if(/h/){p;w$n[-1-abs];$_>0&&splice@n,-2-$_,1}if(/n/){
+w 0;$b<0||w$b+7*p while($b=index"htaoinse",$C[$n++])<7}$0=p,p,w int$_
+/$0,$_%$0if/e/;$a=p,p&&($a?$n=$L[$a-1]:last)if/t/;/a/?w 1+grep$n>$_,@
+L:/o/?print chr p:/s/?w-(p)+p:/i/&&w ord getc||-1}
or download this
@L=(0,map{push@C,lc=~/./g}<>};sub p{$_=pop@n}sub w{push@n,@_}while($n<
+@C){$_=$C[$n++];r,w($n[-1-abs]),$_>0&&splice@n,-2-$_,1if/h/;if(/n/){w
+ 0;$b<0||w$b+7*p while($b=index"htaoinse",$C[$n++])<7}$0=p,p,w int$_/
+$0,$_%$0if/e/;$a=p,p&&($a?$n=$L[$a-1]:last)if/t/;/a/?w 1+grep$n>$_,@L
+:/o/?print chr p:/s/?w-(p)+p:/i/&&w ord getc||-1}