From 0d05031835c269ff76600ffe30cd24340ecffcf0 Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Sun, 10 Apr 2011 23:38:58 +0200
Subject: [PATCH] - Patch #998612 by longwave: drupal_render() doesn't render 0
 when set into #markup property.

---
 includes/common.inc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/includes/common.inc b/includes/common.inc
index 5f56d4413d0..814ca549a6f 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -5568,9 +5568,9 @@ function drupal_render(&$elements) {
     return $cached_output;
   }
 
-  // If #markup is not empty, set #type. This allows to specify just #markup on
-  // an element without setting #type.
-  if (!empty($elements['#markup']) && !isset($elements['#type'])) {
+  // If #markup is set, ensure #type is set. This allows to specify just #markup
+  // on an element without setting #type.
+  if (isset($elements['#markup']) && !isset($elements['#type'])) {
     $elements['#type'] = 'markup';
   }