From 921f824418e48c6a4d7aa10f10e092df79b1ed4f Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Sat, 07 Jul 2012 15:53:18 +0000
Subject: more robust handling of unknown blocks

---
diff --git a/TurtleArt/tablock.py b/TurtleArt/tablock.py
index effe410..7e48d43 100644
--- a/TurtleArt/tablock.py
+++ b/TurtleArt/tablock.py
@@ -587,8 +587,8 @@ class Block:
                 else:
                     self.block_methods[k](svg)
                 return
-        error_output('block type not found %s' % (self.name))
-        self.block_methods['basic-style'](svg)
+        error_output('ERROR: block type not found %s' % (self.name))
+        self.block_methods['blank-style'](svg)
 
     def _set_colors(self, svg):
         if self._custom_colors:
diff --git a/TurtleArt/tawindow.py b/TurtleArt/tawindow.py
index 8bf948a..d187580 100644
--- a/TurtleArt/tawindow.py
+++ b/TurtleArt/tawindow.py
@@ -3346,6 +3346,14 @@ class TurtleArtWindow():
                     b[3] + self.canvas.cy + offset,
                     'block', values, self.block_scale)
 
+        # If it was an unknown block type, we need to match the number
+        # of dock items. TODO: Try to infer the dock type from connections
+        if len(b[4]) > len(blk.docks):
+            debug_output('dock mismatch %d > %d' % (len(b[4]), len(blk.docks)),
+                         self.running_sugar)
+            for i in range(len(b[4]) - len(blk.docks)):
+                blk.docks.append(['unavailable', True, 0, 0])
+
         # Some blocks get transformed.
         if btype in block_styles['basic-style-var-arg'] and value is not None:
             # Is there code stored in this userdefined block?
--
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