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    # List literal in list context
    >perl -E"sub c { @a=qw(d e f g); @a } say('a', 'b', c())"
    ...
    # List literal in scalar context
    >perl -E"sub c { @a=qw(d e f g); @a } say(scalar('a', 'b', c()))"
    4   # scalar(@a)