[VM] 8.2.0a: vm-save-message: Wrong type argument: number-or-marker-p, nil

[Salome Södergran]

Here's a problem I encounter in version 8.2.0a but did not before:

When I do M-x vm-save-message-to-trash, which I have defined in .vm as follows

(defvar vm-trash-folder "~/mail/trash")
(defun vm-save-message-to-trash ()
(interactive)
(vm-save-message vm-trash-folder))

I get "vm-save-message: Wrong type argument: number-or-marker-p, nil"

When I do it "manually", that is M-x vm-save-message (or S) and then
~/mail/trash, everything's fine. What's become wrong with the lines in
my .vm?

best, salome

[Uday Reddy]

Post by Salome Södergran
I get "vm-save-message: Wrong type argument: number-or-marker-p, nil"

That looks like a bug. Whenever you get an error message that appears
to be from Emacs Lisp (such as "wrong type argument" here), it is best
to assume that it is a bug, and send me a vm-submit-bug-report.

The error messages that are given by VM itself would be usually
intelligible.

When you file a bug report for this kind of a problem, you can help me
by doing a bit of work.

1. The first symbol in the message, such as `vm-save-message' is the
Lisp function that gave the error. If you do C-h f on that symbol, you
can find out which Lisp file is involved. In this case, it is `vm-save.el'.

2. Do M-x load-library for the .el file in question. This will load the
uncompiled code for the function, which can help us track down the problem.

3. Do M-x toggle-debug-on-error, which asks Emacs to enter a debug mode
when it runs into errors. When the debug mode is entered, you get a
backtrace. Please copy the backtrace into the bug report. (After this
you can do M-x toggle-debug-on-error again to turn off debug mode, and
continue as normal.)

Hopefully, we won't have too many problems of this kind. Or, I will
need to withdraw the release and do more work before coming back. (By
the way, a number of our users regularly download the development
version and use it in their daily work. If I commit buggy code, usually
I get to find out about the problems within hours. It is only the cases
that they don't exercise that show up in releases. I take this
opportunity to thank these real alpha-testers for their initiative and
helpfulness.)

Cheers,
Uday