Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!bbn!bbn.com!mesard
From: mesard@bbn.com (Wayne Mesard)
Newsgroups: comp.emacs
Subject: Re: deleted buffers
Message-ID: <32722@bbn.COM>
Date: 26 Nov 88 19:30:14 GMT
References: <1587@harlqn.UUCP>
Sender: news@bbn.COM
Lines: 25

From article <1587@harlqn.UUCP>, by jcgs@harlqn.UUCP (John Sturdy):
> Could anyone tell me how to recognize a deleted buffer object? I'm looking
> for something like
>    (buffer-deleted-p BUFFER)
> or
>    (deleted-buffer-p OBJECT)
> but I can't find anything like them.

When a buffer gets killed, the buffer structure (I assume) gets set to
#<killed buffer> if anything's still pointing to it.  And the
buffer-name of this psuedo buffer is nil.  So, this should do what you want:

  (defun killed-bufferp (buffer)
    (and (bufferp buffer)
         (null (buffer-name buffer))))


[The above was derived from setq'ing a variable to (car (buffer-list)),
killing the buffer and seeing what happened.  IOW, this is the voice of
limited experience, not authority.]

-- 
unsigned *Wayne_Mesard();    "Whatta maroon!"
MESARD@BBN.COM                           -B.Bunny
BBN, Cambridge, MA