From 5a14b376861b339b2b9c585d0d377822498314de Mon Sep 17 00:00:00 2001
From: Matt Lauber <github@mklauber.com>
Date: Tue, 16 Feb 2016 08:08:09 -0500
Subject: [PATCH] Update to check if empty sting OR (is array AND is empty)

---
 core/modules/filters/has.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/modules/filters/has.js b/core/modules/filters/has.js
index f19bda492..7b2fde46d 100644
--- a/core/modules/filters/has.js
+++ b/core/modules/filters/has.js
@@ -25,7 +25,7 @@ exports.has = function(source,operator,options) {
 		});
 	} else {
 		source(function(tiddler,title) {
-			if(tiddler && $tw.utils.hop(tiddler.fields,operator.operand) && tiddler.fields[operator.operand] != "") {
+			if(tiddler && $tw.utils.hop(tiddler.fields,operator.operand) && (tiddler.fields[operator.operand] !== "" || ($tw.utils.isArray(tiddler.fields[operator.operand]) && tiddler.fields[operator.operand].length == 0))) {
 				results.push(title);
 			}
 		});