Suggested ZMacs change.

[Daniel L. Weinreb <dlw at MIT-AI>]

The present behavior of the Control-X B command, in Zmacs, when you give
it the name for a new buffer to create, is to feep the first time you
try to give the name and let you win the second time.  The present
behavior is annoying, inconsistent with the rest of the uses of the
completing reader, and incompatible with Emacs.  I think it should be
changed to just use normal "impossible-is-OK" completion, which would
mean that if you typed a string that was not exactly the name of an
existing buffer, and then typed Return, it would create a buffer by that
name and go there, instead of feeping the first time and doing what
I said the second time.  Does anyone object?