LINQ - Where Query sample - Degenerate query

[bernd5]

The spec says in a sample that:

from c in customers.Where(c => c.City == "London")
select c

is translated to:

customers.Where(c => c.City == "London")

which is not what actually happens because (e.g. roslyn) does not interpret the Where method call as part of the Linq query and produces:

customers.Where(c => c.City == "London").Select(c => c);

For roslyn it is a degenerate query (see link).

Shouldn't the sample changed to:

from c in customers
where c.City == "London"
select c

[333fred]

This just looks like a roslyn bug: the example is saying that we should be translating this code into a degenerate query, but we are not doing so.

[yaakov-h]

When compared to the sections above and below it, though, this particular example seems inconsistent, and the OP’s suggestion would be far more at home in that document.