inline_diff_renderer example

        list($orig_matches, $final_matches, $orig_rows, $final_rows) = $this->interleave_changed_lines( $orig, $final );

        // These will hold the word changes as determined by an inline diff.         $orig_diffs  = array();
        $final_diffs = array();

        // Compute word diffs for each matched pair using the inline diff.         foreach ( $orig_matches as $o => $f ) {
            if ( is_numeric( $o ) && is_numeric( $f ) ) {
                $text_diff = new Text_Diff( 'auto', array( array( $orig[ $o ] ), array( $final[ $f ] ) ) );
                $renderer  = new $this->inline_diff_renderer();
                $diff      = $renderer->render( $text_diff );

                // If they're too different, don't include any <ins> or <del>'s.                 if ( preg_match_all( '!(<ins>.*?</ins>|<del>.*?</del>)!', $diff, $diff_matches ) ) {
                    // Length of all text between <ins> or <del>.                     $stripped_matches = strlen( strip_tags( implode( ' ', $diff_matches[0] ) ) );
                    /* * Since we count length of text between <ins> or <del> (instead of picking just one), * we double the length of chars not in those tags. */
                    $stripped_diff = strlen( strip_tags( $diff ) ) * 2 - $stripped_matches;