* @return string
*/
protected function blockHeader( $xbeg, $xlen, $ybeg, $ylen ) {
+ // '<!--LINE \d+ -->' get replaced by a localised line number
+ // in DifferenceEngine::localiseLineNumbers
$r = '<tr><td colspan="2" class="diff-lineno"><!--LINE ' . $xbeg . "--></td>\n" .
'<td colspan="2" class="diff-lineno"><!--LINE ' . $ybeg . "--></td></tr>\n";