Merge "Bug1246553: When cleaning the query, replace the special characters...

Merge "Bug1246553: When cleaning the query, replace the special characters with a space. This separates the tokens instead of concatenating them."

htdocs/search/elasticsearch/lib.php

@@ -813,8 +813,8 @@ class PluginSearchElasticsearch extends PluginSearch {
             ':'
         );
         foreach ($badchars as $bad) {
-            // delete it!
-            $query = preg_replace('/\\'.$bad.'/','',$query);
+            // Replace with a space.
+            $query = preg_replace('/\\'.$bad.'/',' ',$query);
         }
         return $query;
     }