1.1 --- a/common.py	Tue Jan 24 17:20:35 2017 +0100
     1.2 +++ b/common.py	Tue Jan 24 19:10:31 2017 +0100
     1.3 @@ -4,7 +4,7 @@
     1.4  Common functions.
     1.5  
     1.6  Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013,
     1.7 -              2014, 2015, 2016 Paul Boddie <paul@boddie.org.uk>
     1.8 +              2014, 2015, 2016, 2017 Paul Boddie <paul@boddie.org.uk>
     1.9  
    1.10  This program is free software; you can redistribute it and/or modify it under
    1.11  the terms of the GNU General Public License as published by the Free Software
    1.12 @@ -394,16 +394,9 @@
    1.13  
    1.14          name_ref = self.process_structure_node(expr)
    1.15  
    1.16 -        # Either unpack the items and present them directly to each assignment
    1.17 -        # node.
    1.18 +        # Have the assignment nodes access each item via the sequence API.
    1.19  
    1.20 -        if isinstance(name_ref, LiteralSequenceRef):
    1.21 -            self.process_literal_sequence_items(n, name_ref)
    1.22 -
    1.23 -        # Or have the assignment nodes access each item via the sequence API.
    1.24 -
    1.25 -        else:
    1.26 -            self.process_assignment_node_items_by_position(n, expr, name_ref)
    1.27 +        self.process_assignment_node_items_by_position(n, expr, name_ref)
    1.28  
    1.29      def process_assignment_node_items_by_position(self, n, expr, name_ref):
    1.30  
    1.31 @@ -417,8 +410,14 @@
    1.32  
    1.33          assignments = []
    1.34  
    1.35 -        if isinstance(name_ref, NameRef):
    1.36 +        # Employ existing names to access the sequence.
    1.37 +        # Literal sequences do not provide names of accessible objects.
    1.38 +
    1.39 +        if isinstance(name_ref, NameRef) and not isinstance(name_ref, LiteralSequenceRef):
    1.40              temp = name_ref.name
    1.41 +
    1.42 +        # For other expressions, create a temporary name to reference the items.
    1.43 +
    1.44          else:
    1.45              temp = self.get_temporary_name()
    1.46              self.next_temporary()
    1.47 @@ -427,6 +426,8 @@
    1.48                  compiler.ast.Assign([compiler.ast.AssName(temp, "OP_ASSIGN")], expr)
    1.49                  )
    1.50  
    1.51 +        # Assign the items to the target nodes.
    1.52 +
    1.53          for i, node in enumerate(n.nodes):
    1.54              assignments.append(
    1.55                  compiler.ast.Assign([node], compiler.ast.Subscript(