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$index->spec_field(name => 'url', analyzed => 0, vectorized => 0);
$index->spec_field(name => 'filetype', indexed => 0, analyzed => 0, ve
+ctorized => 0);
$index->spec_field(name => 'title', boost => 3, vectorized => 0);
$index->spec_field(name => 'section', boost => 3, vectorized => 0);
$index->spec_field(name => 'content');

my $doc = $index->new_doc;
$doc->set_value(url => $url || '');
...
$doc->set_value(content => $content || '');

$index->add_doc($doc);