If I understand correctly, the "called_recursively" stuff in dof_map_constraints.C is not used anymore because we expand out all recursive constraints beforehand.
If that is correct, then I'd be in favor of removing the "called_recursively" code (i.e. in build_constraint_matrix and build_constraint_matrix_and_vector) in order to simplify the code a bit. I'd be happy to make a PR to do this, if it's something that others would also want? David
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