Re: cond: Wrong type argument: number-or-marker-p, nil

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Article #789

#789

From: Kyle Jones
Date: Thu, 17 Jul 2003 18:51

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Robert Marshall  <robert@chezmarshall.freeserve.co.uk> wrote:
 > Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
 >   vm-follow-summary-cursor()
 >   vm-scroll-forward(nil)
 > * call-interactively(vm-scroll-forward)
 > 
 > Happened after I edited a message - removing quite a bit of text, then
 > deleted the message after the edited message - which (the deleted one)
 > was the last displayed message and then expunged
 > 
 > Both vm-message-pointer and vm-message-list are nil but I suppose the
 > second bit of the cond manipulates those values?
 > 
 > vm 7.15 (basically the same setup as previously but this is W2000)

I could not find any reason in the code for this to occur.  The
expunge code makes sure that vm-message-pointer is set to a
non-nil value provided the folder isn't empty after the expunge.

If you're running with addon packages, you might try disabling
them and see if the problem goes away.  I have not touched the
expunge finalization code in a long while so I'd be surprised if
it were broken in so basic a way.  I'd expect to receive a lot
more bug reports about such a problem.

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From: kyle_jones@wonderworks.com (Kyle Jones)
Newsgroups: gnu.emacs.vm.bug
Subject: Re: cond: Wrong type argument: number-or-marker-p, nil
Date: Thu, 17 Jul 2003 18:51:40 -0000
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