$this->line =
$this->line . '<span class="diffchange">' .
$this->group . '</span>';
} else { $this->line =
$this->line .
$this->group;
} } $this->group = '';
$this->tag =
$new_tag;
} protected function _flushLine($new_tag) { $this->
_flushGroup($new_tag);
if ($this->line != ''
) { array_push($this->lines,
$this->line
);
} else { // make empty lines visible by inserting an NBSP
array_push($this->lines,
$this::NBSP
);
} $this->line = '';
} public function addWords($words,
$tag = ''
) {