lanx@nc10-ubuntu:/tmp$ cat >tst.pl exit; ''=~('(?{B'.'EGIN{print "owned"}})') lanx@nc10-ubuntu:/tmp$ cat tst.pl exit; ''=~('(?{B'.'EGIN{print "owned"}})') lanx@nc10-ubuntu:/tmp$ perl -c tst.pl tst.pl syntax OK ownedlanx@nc10-ubuntu:/tmp$