From 34788130ef52c93eda81c62aab3fc0c869f68025 Mon Sep 17 00:00:00 2001
From: Marcus Nyeholt <nyeholt@gmail.com>
Date: Tue, 4 Dec 2012 15:44:13 +1100
Subject: [PATCH] BUG Rewrite hashlinks failing on empty a tags

Check for presence of href in _a_ tags before trying to .match them to
prevent null pointer errors.

Some external JS libs (eg tag-it) use <ul><a> structures which get matched
and break

(fixes regression introduced by ff39f9ad38dad4e8a162230ab01ca3121ade9f19)
---
 admin/javascript/LeftAndMain.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/admin/javascript/LeftAndMain.js b/admin/javascript/LeftAndMain.js
index 7d3879615..77d20a061 100644
--- a/admin/javascript/LeftAndMain.js
+++ b/admin/javascript/LeftAndMain.js
@@ -951,6 +951,7 @@ jQuery.noConflict();
 			 */
 			rewriteHashlinks: function() {
 				$(this).find('ul a').each(function() {
+					if (!$(this).attr('href')) return;
 					var matches = $(this).attr('href').match(/#.*/);
 					if(!matches) return;
 					$(this).attr('href', document.location.href.replace(/#.*/, '') + matches[0]);