From 8c03fca224f029d064e8d81da7d7fbf85775afad Mon Sep 17 00:00:00 2001
From: Artur Arseniev <artur.catch@hotmail.it>
Date: Tue, 16 Oct 2018 23:57:25 +0200
Subject: [PATCH] Don't return functionName if not set

---
 src/style_manager/model/Property.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/style_manager/model/Property.js b/src/style_manager/model/Property.js
index c53cd8f42..091e4827d 100644
--- a/src/style_manager/model/Property.js
+++ b/src/style_manager/model/Property.js
@@ -110,7 +110,8 @@ const Property = require('backbone').Model.extend(
       let valueStr = `${result.value}`;
       let start = valueStr.indexOf('(') + 1;
       let end = valueStr.lastIndexOf(')');
-      result.functionName = valueStr.substring(0, start - 1);
+      const functionName = valueStr.substring(0, start - 1);
+      if (functionName) result.functionName = functionName;
       args.push(start);
 
       // Will try even if the last closing parentheses is not found