New interactive spec

[Per Starbäck]

2009/11/11 Didier Verna <didier at xemacs.org>:

>  OK, but I'm not talking about /any/ buffer available as the default.
> Only the /current/ buffer. Do you think it really happens that when
> prompted with the /current/ buffer as a default value, you try to type
> and complete it anyway ?

I think I do sometimes at least, for example with ediff-buffers where
I most of the time already display the two buffers, but sometimes have
"A" and sometimes "B" as current buffer when invoking ediff-buffers.

I'm still surprised now and then by the new completion in emacs 23
that avoids current buffer sometimes.