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One or more new changesets pushed to the primary ufl repository.
A short summary of the last three changesets is included below.

changeset:   583:347ab1fca679e505f4816dc85d899a808674789a
tag:         tip
user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
date:        Tue Feb 17 11:20:10 2009 +0100
files:       test/algorithms.py
description:
basic unit tests for traversal and walk


changeset:   582:69eab0cb0ec7fdbb5bc89481a18c7ffa3b86416c
user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
date:        Tue Feb 17 11:10:18 2009 +0100
files:       ufl/algorithms/analysis.py ufl/algorithms/checks.py ufl/algorithms/graph.py ufl/algorithms/predicates.py ufl/algorithms/traversal.py
description:
Changed post_traversal and pre_traversal to not yield the stack.
If a stack (list) is provided by the user, it is kept up to date
in-place, so there's no need to yield it which clutters all the
other code that doesn't use the stack (I don't know what it's needed for?).


changeset:   581:d2d1d8decc7c63be97e0753792105f710634082e
user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
date:        Tue Feb 17 11:00:25 2009 +0100
files:       ufl/tensors.py
description:
Improvement in ListTensor.__getitem__, extracting subtensor
if possible when first index is an integer.

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For more details, visit http://www.fenics.org/hg/ufl