Re: Bug: wrong-type-argument when changing TODO state [7.7]

[Stelian Iancu <stelian.iancu@gmail.com>]

On Mon, Aug 29, 2011 at 23:42, Stelian Iancu <stelian.iancu@gmail.com> wrote:
> On Mon, Aug 29, 2011 at 09:59, Nick Dokos <nicholas.dokos@hp.com> wrote:
>> Stelian Iancu <stelian.iancu@gmail.com> wrote:
>>
>>> On Sun, Aug 28, 2011 at 19:09, Nick Dokos <nicholas.dokos@hp.com> wrote:
>>> > Stelian Iancu <stelian.iancu@gmail.com> wrote:
>>> >
>>> >>
>>> >> I am trying to switch between TODO and DONE states with Shift-Right
>>> >> Arrow and I get a (wrong-type-argument stringp nil) error.
>>> >>
>>> >> Please find attached the backtrace.
>>> >>
>>> >>
>>> >> Emacs  : GNU Emacs 23.2.1 (i486-pc-linux-gnu, GTK+ Version 2.20.0)
>>> >>  of 2010-12-11 on raven, modified by Debian
>>> >> Package: Org-mode version 7.7
>>> >>
>>> >
>>> >> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>>> >>   looking-at(nil)
>>> >>   (save-excursion (beginning-of-line 1) (looking-at org-todo-line-regexp))
>>> >>   (and (outline-on-heading-p) (not (bolp)) (save-excursion (beginning-of-line 1) (looking-at org-todo-line-regexp)) (< (point) (+ 2 ...)))
>>> >>   (if (and (outline-on-heading-p) (not ...) (save-excursion ... ...) (< ... ...)) (progn (goto-char ...) (and ... ...)))
>>> >>   (let* ...)
>>> >>   (catch (quote exit) ...)
>>> >>   (save-excursion (catch (quote exit)...)
>>> >>   (let ...)
>>> >>   org-todo(right)
>>> >>   call-interactively(org-todo)
>>> >>   (let ((current-prefix-arg arg)) (call-interactively command))
>>> >>   org-call-with-arg(org-todo right)
>>> >>   (let ...)
>>> >>   (cond ...)
>>> >>   org-shiftright(nil)
>>> >>   call-interactively(org-shiftright nil nil)
>>> >
>>> > The problem is that org-todo-line-regexp is nil. This variable is
>>> > made buffer-local and initialized when the buffer's mode is set
>>> > to org-mode.
>>> >
>>> > Are you sure that your buffer's major mode is org-mode?
>>> >
>>> > Nick
>>> >
>>>
>>> Yeah, the mode shows as org-mode.
>>
>> What happens if while visiting the buffer, you say
>>
>> C-h v org-todo-line-regexp RET
>>
>> Is the value reported nil?
>
> Yes, the value is nil.
>
>>
>>> But now I get another weird one.
>>> Everytime I open an org file, I see the following message in the
>>> minibuffer:
>>>
>>> File mode specification error: (wrong-type-argument keymap nil)
>>>
>>
>> That will require another backtrace but...
>>
>>> I'm lost ...
>>
>> When you get to the point of feeling lost, it's time to take a step
>> back. Make yourself a minimal.emacs that contains just the basics to
>> get org-mode loaded - assuming you get your org sources from git, then
>> you need something like this (with pathnames changed appropriately):
>>
>> --8<---------------cut here---------------start------------->8---
>> ;;; -*- mode: emacs-lisp -*-
>> ;;; constant part
>> (add-to-list 'load-path (expand-file-name "~/src/emacs/org/org-mode/lisp"))
>> (add-to-list 'auto-mode-alist '("\\.\\(org\\|org_archive\\|txt\\)$" . org-mode))
>> (require 'org-install)
>> (global-set-key "\C-cl" 'org-store-link)
>> (global-set-key "\C-ca" 'org-agenda)
>> --8<---------------cut here---------------end--------------->8---
>>
>> Then start up an emacs without any of your customizations, load the minimal.emacs
>> file and visit an org file and try what you tried before:
>>
>>   emacs -q -l /path/to/minimal.emacs /path/to/somefile.org
>>
>> and try changing a TODO as before.  Does that work?
>
> Tried this one and indeed, it works now. Looking at the
> org-todo-line-regexp variable I can see it's no longer reported nil.
>
>> If not, try -Q
>> instead of -q: does *that* work?
>>
>> Assuming one of these works, then you have localized the problem to
>> some customization (yours or the systems) and then there are various
>> ways to proceed.
>>
>
> So it is a customization issue. Now the question is what :-). I should
> mention that I am using both dev versions for Emacs and org-mode
> (Emacs from bzr from a few days ago and org-mode from git from a few
> days ago) on Mac OS X 10.7. Emacs is installed using homebrew.
>

Ok, it seems like I've found the culprit. It's this line:

;; Make org-mode default for all the new files
(setq major-mode 'org-mode)

If I comment it out, it all works beautifully. I thought it was
because I was executing it before loading org-mode, but I've made sure
org-mode is loaded before executing that line and I still get the same
error.

Any ideas why it happens?

Thanks,
S.