From cb27eb98e10a17406955a86f99e3c960b46b0671 Mon Sep 17 00:00:00 2001
From: alexis Algoud <alexis@atm-consulting.fr>
Date: Wed, 7 Mar 2018 11:42:47 +0100
Subject: [PATCH] FIX natural search double quote

---
 htdocs/core/lib/functions.lib.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 9e7f554055b..5646de308cb 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -6276,6 +6276,8 @@ function natural_search($fields, $value, $mode=0, $nofirstand=0)
 				$i3 = 0;
 				foreach($tmpcrits as $tmpcrit)
 				{
+					if(empty($tmpcrit)) continue;
+
 					$newres .= (($i2 > 0 || $i3 > 0) ? ' OR ' : '');
 
 					if (preg_match('/\.(id|rowid)$/', $field))	// Special cas for rowid that is sometimes a ref so used as a search field