If we have a context X != a and are descending an expression
Y + sum{(on X) X | X = a}
the context needs to be SA'd to X' != a so that there is no interference
between it and the "new X".
This must be done in every descending operation, most importantly on
Expression.replace's implementation.
Original issue reported on code.google.com by rodrigob...@gmail.com on 8 Jun 2013 at 12:39
Original issue reported on code.google.com by
rodrigob...@gmail.com
on 8 Jun 2013 at 12:39