http://www.perlmonks.org?node_id=588344


in reply to Re: Negating Regexes: Tips, Tools, And Tricks Of The Trade
in thread Negating Regexes: Tips, Tools, And Tricks Of The Trade

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);