From 779c8a4e43b26448fb38cc3f07f9fb946355b3cc Mon Sep 17 00:00:00 2001
From: Keith Sloan <keith@sloan-home.co.uk>
Date: Fri, 28 Apr 2017 13:28:02 +0100
Subject: [PATCH] Fix for null string and single blank string

---
 src/Mod/OpenSCAD/importCSG.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Mod/OpenSCAD/importCSG.py b/src/Mod/OpenSCAD/importCSG.py
index 3b3b5e332a..52d7e352be 100644
--- a/src/Mod/OpenSCAD/importCSG.py
+++ b/src/Mod/OpenSCAD/importCSG.py
@@ -1041,6 +1041,10 @@ def addValue(t,v,p):
 
 def p_text_action(p) :
     'text_action : text LPAREN keywordargument_list RPAREN SEMICOL'
+    # If text string is null ignore
+    if p[3]['text'] == "" or p[3]['text'] == " " :
+        p[0] = []
+        return
     t = 'text ( text="'+p[3]['text']+'"'
     t = addValue(t,'size',p)
     t = addString(t,'spacing',p)