or at the very least limit the input...

Something like 

if($exp =~ /^[-+/*%()\s\d]+$/) {
  print eval $exp;
}

[download]
or something along those lines it would make it much harder to actually do anything underhanded.

Exactly what taint mode encourages people to do.

                - Ant
                - Some of my best work - (1 2 3)

In reply to Re^2: Chomp a numerical expression, return the answer. by suaveant
in thread Chomp a numerical expression, return the answer. by sub_chick

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