I would argue that it is not well written code.

This website is frequently the meeting place for showdowns about "show-off perl" vs "safe perl" programming.

I often write an empty block as follows:

    {
        ;
    }
[download]

usually for the following

    if ($condition_that_should_return_true)
    {
        ; # success!
    }
    elsif (...)
      .
      .
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If you are coding in a manner than can be interpreted a multiple number of ways depending on context, then you should either code within the context, or avoid expressing your statement when you're unsure of the context.

I suggest you have a read of Code Complete. It may make you aware of some programming methodologies that will help you avoid unsafe programming.