>perl -wMstrict -le
"my @strings = ('testing','','testing','testing');
 foreach my $string (@strings) {
     print \"\nSTRING: $string\n\";
     my $string2 = 'http';
     $string2 =~ /^h(.*)/o;
     my $q = $string;
     my $test = 'testing';
     warn $test =~ /\Q$q\E/;
 }
"

STRING: testing

1 at -e line 1.

STRING:

Warning: something's wrong at -e line 1.

STRING: testing

1 at -e line 1.

STRING: testing

1 at -e line 1.