Re: Incompatible change without "warning"

[Richard Stallman]

    There is probably no sense in declaring a variable an obsolete alias
    if it does not even work! 

I agree.

                               I think we should add a compatibility layer
    with the old interface (can't be much more than three lines or so)
    that we'll remove with 23.1 or so.

If a compatibility layer can be added, so as to make the old names work,
that would indeed be a good thing to do.