From 1e888f94f6fea1297a6aee2af0efcfa5546ee208 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Tue, 08 Nov 2011 23:51:13 +0000
Subject: add comma separators for used block list

---
diff --git a/TurtleArt/tawindow.py b/TurtleArt/tawindow.py
index f9f1696..0ded3cb 100644
--- a/TurtleArt/tawindow.py
+++ b/TurtleArt/tawindow.py
@@ -1356,8 +1356,9 @@ class TurtleArtWindow():
         if newblk.spr.labels[0] is not None and \
                 newblk.name not in ['', 'number', 'string']:
             if newblk.spr.labels[0] not in self.used_block_list:
+                if len(self.used_block_list) > 0:
+                    self.used_block_list.append(', ')
                 self.used_block_list.append(newblk.spr.labels[0])
-                self.used_block_list.append(' ')
 
     def _new_macro(self, name, x, y):
         """ Create a "macro" (predefined stack of blocks). """
@@ -2838,8 +2839,9 @@ class TurtleArtWindow():
         if self.running_sugar and blk.spr.labels[0] is not None and \
                 blk.name not in ['', ' ', 'number', 'string']:
             if blk.spr.labels[0] not in self.used_block_list:
+                if len(self.used_block_list) > 0:
+                    self.used_block_list.append(', ')
                 self.used_block_list.append(blk.spr.labels[0])
-                self.used_block_list.append(' ')
         return blk
 
     def load_start(self, ta_file=None):
--
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