Re: Re: Lisp error: (wrong-type-argument stringp nil)

[Carsten Dominik <carsten.dominik@gmail.com>]

Hi Sebastian,

I do not know what is happening here.  Something.  But you do
seem to be the  only one having this problem, I have not heard
about it from anybody else.

Unfortunately I do not know how to guide you to
better tracing this error at this time.
If you can make me a reproducible case with a minimal
setup - I will take a look.

- Carsten

On Oct 14, 2010, at 3:06 PM, Sébastien Vauban wrote:

> Carsten Dominik,
>
> Carsten Dominik wrote:
>>> I don't understand the cause of this, moreover as I have the  
>>> linked file
>>> open in my Emacs.
>>>
>>> Of course, since I've just reinstalled my Emacs, Org, and so on,  
>>> on a new
>>> Windows setup, I have many small differences with before.
>>>
>>> Someone would have an idea for this?
>>
>> do you have agenda-follow-mode on?
>
> Nope. I only use that once in a month, when checking clock times and
> description of tasks.
>
> Not enabled in yesterday's session.
>
>
>> Also, can you please hit the bug again in the debugger and then press
>>
>> e m RET
>>
>> and let me know what the debuffer reports?  This should retrieve  
>> the value of
>> m.
>>
>> One possible reason to get this bug is to kill the buffer one of  
>> one of the
>> agenda files and then to revisit it.  The marker will then not  be  
>> nil, but it
>> will point nowhere....
>
> I killed one of the org-agenda-files, and moved the cursor on it.
> I could reproduce the same problem as yesterday.
>
> Entering debugger...
>
> --8<---------------cut here---------------start------------->8---
> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>  set-buffer(nil)
>  (if (markerp m) (set-buffer (marker-buffer m)))
>  (save-excursion (if (markerp m) (set-buffer ...)) (save-excursion  
> (goto-char ...) (org-display-outline-path t)))
>  (org-with-point-at m (org-display-outline-path t))
>  (if (and m org-agenda-show-outline-path) (org-with-point-at m (org- 
> display-outline-path t)))
>  (let ((m ...)) (if (and org-agenda-follow-mode m) (org-agenda- 
> show)) (if (and m org-agenda-show-outline-path) (org-with-point-at  
> m ...)))
>  org-agenda-do-context-action()
>  org-agenda-next-line()
>  call-interactively(org-agenda-next-line nil nil)
> --8<---------------cut here---------------end--------------->8---
>
> =e m RET= displays:
>
>  #<marker in no buffer>
>
> Though, here and now, pressing =g= resolves the problem. Agenda is  
> refreshed,
> with the missing file being reloaded, and I can once again move and  
> click on
> any line of the agenda.
>
> Yesterday, there were 2 differences:
>
> - =g= did not solve anything
>
> - all the agenda lines were bugging...
>
> Unluckily, I don't enough context now to be able to reproduce that  
> exact same
> problem as of yesterday. I said it only occurred a couple of times,  
> over a
> couple of days.
>
> Thanks!
>
> Best regards,
>  Seb
>
> -- 
> Sébastien Vauban
>
>
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