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  1. or download this
    >perl -wMstrict -le
    "for (qw(zik zok)) {
    ...
    for before: 'zok'
    gone from foo,  passed = 'wilma',  $_ = 'fred'
    for after: 'zok'
    
  2. or download this
    sub foo {
      for (qw(fred pebbles)) {
        sub { for (qw(hoo ha)) { goto &bar; } }->(@_);
        }
      }