From b3c3bffeaab6800b580976dd4141457ee773ad25 Mon Sep 17 00:00:00 2001
From: Dave Conway-Jones <conway@uk.ibm.com>
Date: Tue, 12 Aug 2014 19:33:41 +0100
Subject: [PATCH] tweak tail.js to only send changed/new lines.

---
 nodes/core/storage/28-tail.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nodes/core/storage/28-tail.js b/nodes/core/storage/28-tail.js
index 58c2bd06b..e241d4a6e 100644
--- a/nodes/core/storage/28-tail.js
+++ b/nodes/core/storage/28-tail.js
@@ -28,7 +28,7 @@ module.exports = function(RED) {
 
         var err = "";
         // TODO: rewrite to use node-tail
-        var tail = spawn("tail", ["-F", this.filename]);
+        var tail = spawn("tail", ["-F", "-n", "0", this.filename]);
         tail.stdout.on("data", function (data) {
             if (node.split) {
                 // TODO: allow customisation of the line break - as we do elsewhere