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  1. or download this
    C:\>perl -E "my $str1 = qq(|L|D|); my $str2 = qr(\|L\|);if ($str2 =~ $
    +str1) { say 'foo';}"
     foo
    
  2. or download this
    c:\@Work\Perl>perl -wMstrict -le
    "my $str1 = qq(|L|D|);
    ...
     if ($str2 =~ $str1) { print 'foo'; }
    "
    foo