+ elsif ($key eq 'keywords') {
+ # Make sure the keyword string is safe: only allow alphanumeric
+ # characters, space and comma and strip the rest.
+ $value =~ s/[^[:alnum:], ]+//g;
+ push @{$metaheaders{$page}}, '<meta name="keywords"'.
+ ' content="'.encode_entities($value).'" />';
+ }