bug#5974: 23.1.95; enabling disabled cmd & saving doesn't respect `custom-file'

[Drew Adams]

> > Surely this bug can be fixed
> 
> AFAICT there is no bug : the code is behaving as expected and as
> documented. It's a request for changing the current behaviour.

OK; it's an enhancement request (as I mentioned in my last msg
before today).  Mille excuses for too-quickly calling it a bug.

The point of my msg today is that it makes sense to take your
interesting side discussion elsewhere.