I'm not a master of regex's (yet?) but I think I see the problem... 
if ($line =~ /^$query_el\]\[.*/i) {

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Remember that $ has special meaning inside a regex (end of line). I *think* that you need to use the qr operator before the regex to evaluate the contents of $query_el before you perform the regex. Someone please correct me if I'm wrong here.

In reply to Re^3: Sort of basic search engine/pattern matching problems by sierpinski
in thread Sort of basic search engine/pattern matching problems by bvulnerbility

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