From a6f7da6c1c2892bbb007e9281494be756eb90c9e Mon Sep 17 00:00:00 2001
From: Jermolene <jeremy@osmosoft.com>
Date: Wed, 30 Apr 2014 22:48:36 +0100
Subject: [PATCH] Suppress refresh cycle if no tiddlers have changed

---
 core/modules/wiki.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/modules/wiki.js b/core/modules/wiki.js
index c838a9d29..7609d88ba 100755
--- a/core/modules/wiki.js
+++ b/core/modules/wiki.js
@@ -140,7 +140,9 @@ exports.enqueueTiddlerEvent = function(title,isDeleted) {
 			var changes = self.changedTiddlers;
 			self.changedTiddlers = Object.create(null);
 			self.eventsTriggered = false;
-			self.dispatchEvent("change",changes);
+			if($tw.utils.count(changes) > 0) {
+				self.dispatchEvent("change",changes);
+			}
 		});
 		this.eventsTriggered = true;
 	}