From b95529d5ec8c37413f2d10612896c415a4be0e1d Mon Sep 17 00:00:00 2001
From: Ansis Brammanis <ansis.brammanis@gmail.com>
Date: Thu, 25 Apr 2013 11:48:03 -0400
Subject: [PATCH] prevent way danglers, issue #1373

---
 js/id/behavior/draw_way.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/js/id/behavior/draw_way.js b/js/id/behavior/draw_way.js
index 7bb24db82..198dc81b7 100644
--- a/js/id/behavior/draw_way.js
+++ b/js/id/behavior/draw_way.js
@@ -131,6 +131,11 @@ iD.behavior.DrawWay = function(context, wayId, index, mode, baseGraph) {
 
     // Connect the way to an existing way.
     drawWay.addWay = function(loc, edge) {
+
+        // Avoid creating duplicate segments
+        if (edge[0] === way.nodes[way.nodes.length - 1] ||
+            edge[1] === way.nodes[way.nodes.length - 1]) return;
+
         var newNode = iD.Node({ loc: loc });
 
         context.perform(