From 6ccf5c651d588b03ce151d7240067a0e82c783ed Mon Sep 17 00:00:00 2001
From: jos <wjosdejong@gmail.com>
Date: Sat, 30 Mar 2019 14:13:25 +0100
Subject: [PATCH] Fix redo duplicate not checking for duplicate property names

---
 src/js/History.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/js/History.js b/src/js/History.js
index 5bccbb2..6f70424 100644
--- a/src/js/History.js
+++ b/src/js/History.js
@@ -1,5 +1,7 @@
 'use strict';
 
+var util = require('./util');
+
 /**
  * @constructor History
  * Store action history, enables undo and redo
@@ -121,6 +123,8 @@ function History (editor) {
         var nodes = params.paths.map(findNode);
         nodes.forEach(function (node) {
           var clone = node.clone();
+          var existingFieldNames = parentNode.getFieldNames();
+          clone.field = util.findUniqueName(node.field, existingFieldNames);
           parentNode.insertAfter(clone, afterNode);
           afterNode = clone;
         });