That approach is valid, but not appropriate for this context because the regex in question is being passed to WWW::Mechanize as follows: 
$mech->find_all_links(text_regex => qr/download/i);

[download]

In reply to Re^2: Negating Regexes: Tips, Tools, And Tricks Of The Trade by imp
in thread Negating Regexes: Tips, Tools, And Tricks Of The Trade by Limbic~Region

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