void foo()
{
    some.really_long.variable_name =
        another.big.one[55] +
        something_else;

    some.really_long.variable_name =
        another.big.one[55] +
        something_else;

    some.really_long.variable_name = another.big.one[55] +
                                     something_else;

    a_really_long_assignment_to_test =
        line_breaks_around_assign_and_arith;

    a_really_long_assignment_to_test = line_breaks_around +
                                       assign_and_arith;

}