Index: wp-includes/formatting.php
===================================================================
--- wp-includes/formatting.php	(revision 23455)
+++ wp-includes/formatting.php	(working copy)
@@ -1957,18 +1957,18 @@
 	$output = '';
 
 	if ( ! empty( $content ) && $show_content && 'before' !== $compat['position'] )
-		$output .= $content . PHP_EOL . PHP_EOL;
+		$output .= $content . "\n\n";
 
 	if ( ! empty( $compat['tag'] ) )
 		$output .= sprintf( '<%s class="%s">', tag_escape( $compat['tag'] ), esc_attr( $compat['class'] ) );
 
-	$output .= $format_output;
+	$output .= "\n\n" . $format_output;
 
 	if ( ! empty( $compat['tag'] ) )
 		$output .= sprintf( '</%s>', tag_escape( $compat['tag'] ) );
 
 	if ( ! empty( $content ) && $show_content && 'before' === $compat['position'] )
-		$output .= PHP_EOL . PHP_EOL . $content;
+		$output .= "\n\n" . $content;
 
 	return $output;
 }