From 41dd921b414aa18c3e35c7fd5b5038a2181ce972 Mon Sep 17 00:00:00 2001
From: Mottie <wowmotty@gmail.com>
Date: Thu, 21 Feb 2013 12:08:20 -0600
Subject: [PATCH] Don't include empty cells in the filter select

---
 js/jquery.tablesorter.widgets.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/jquery.tablesorter.widgets.js b/js/jquery.tablesorter.widgets.js
index 611974eb..679304f5 100644
--- a/js/jquery.tablesorter.widgets.js
+++ b/js/jquery.tablesorter.widgets.js
@@ -498,8 +498,8 @@ $.tablesorter.addWidget({
 
 				// build option list
 				for (k = 0; k < arry.length; k++){
-					// replace quotes - fixes #242
-					o += '<option value="' + arry[k].replace(/\"/g, "&quot;") + '">' + arry[k] + '</option>';
+					// replace quotes - fixes #242 & ignore empty strings - see http://stackoverflow.com/q/14990971/145346
+					o += arry[k] !== '' ? '<option value="' + arry[k].replace(/\"/g, "&quot;") + '">' + arry[k] + '</option>' : '';
 				}
 				$t.find('thead').find('select.' + css + '[data-column="' + i + '"]')[ updating ? 'html' : 'append' ](o);
 			},