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[no subject]

In the version of ZWEI on system 29.95 NWS, with microcode 669, on LISP Machine Eight:

In NZWEI:ROTATE-BUFFER-HISTORY, it ought to check for an invalid numeric
argument.  If you give too large a number, a NIL creeps into the history
list and fouls everything up.  Likewise, a zero or negative argument
causes an unseemly error-it ought to just beep.