From 989ac2fe1d56006b1e067266428336ecbb5e77f4 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter@sugarlabs.org>
Date: Thu, 28 Nov 2013 08:09:23 +0000
Subject: more robust removal of blocks from trash

---
(limited to 'TurtleArt/tawindow.py')

diff --git a/TurtleArt/tawindow.py b/TurtleArt/tawindow.py
index 81b1251..5d9073c 100644
--- a/TurtleArt/tawindow.py
+++ b/TurtleArt/tawindow.py
@@ -2216,10 +2216,13 @@ before making changes to your program'))
         for blk in self.block_list.list:
             if blk.type == 'trash':
                 blk.type = 'deleted'
-                blk.spr.hide()
+        remove_list = []
         for blk in self.block_list.list:
             if blk.type == 'deleted':
-                self.block_list.list.remove(blk)
+                blk.spr.hide()
+                remove_list.append(blk)
+        for blk in remove_list:
+            self.block_list.list.remove(blk)
         self.trash_stack = []
         if 'trash' in palette_names:
             self.show_toolbar_palette(palette_names.index('trash'),
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