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  1. or download this
    $var = "foo @{[ sub() ]} baz";  
# Note: This calls the sub in list context, so may have a 
# different effect than if called in scalar context.  Use 
# ${ \sub() } for scalar context.
  2. or download this
    print "attribute 0=\t$1\n" if m/@{[ATTRIBUTE_0]}='(.*)'/;