if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
my ($lead, $match, $trail) = ($1, $2, $3);
$match = chop_str($match, 70, 5); # in case match is very long
- my $contextlen = (80 - len($match))/2; # is left for the remainder
+ my $contextlen = int((80 - length($match))/2); # for the remainder
$contextlen = 30 if ($contextlen > 30); # but not too much
$lead = chop_str($lead, $contextlen, 10);
$trail = chop_str($trail, $contextlen, 10);