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Re: defgeneric :method option

    Date: 8 Feb 88 15:59 PST
    From: Danny Bobrow <Bobrow.pa@Xerox.COM>

    Another argument for removing methods first is that when a method is added, but
    it is shadowed by a method to be removed, the generic function is in as much of
    an inconsistent state as when a method is removed and there is no method for a
    particlar set of arguments.

    It seems to me that doing the remove-method first answers Patrick's issue, and
    provides no more inconsistency.

The case I had in mind is the one where the defgeneric has the same :method
options both before and after.