Add ability not to expand tabs

Author: JBlond

lib/Diff/Renderer/Html/Array.php

@@ -223,7 +223,9 @@ private function getChangeExtent($fromLine, $toLine)
 	 */
 	protected function formatLines($lines)
 	{
-		$lines = array_map(array($this, 'ExpandTabs'), $lines);
+		if ($this->options['tabSize'] !== false) {
+			$lines = array_map(array($this, 'ExpandTabs'), $lines);
+		}
 		$lines = array_map(array($this, 'HtmlSafe'), $lines);
 		foreach($lines as &$line) {
 			$line = preg_replace_callback('# ( +)|^ #', array($this, 'fixSpaces'), $line);