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From: Rainer M Krug <r.m.krug@gmail.com>
To: Jason Dunsmore <emacs-orgmode@dunsmor.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Re: Crash of emacs when using SHIFT-TAB
Date: Mon, 5 Jul 2010 22:34:06 +0200	[thread overview]
Message-ID: <AANLkTilmN4LIII_8FxBNaVYE8DSDjLxDjzpfD4wHU1pW@mail.gmail.com> (raw)
In-Reply-To: <87y6dpg73x.fsf@riotblast.dunsmor.com>


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On Mon, Jul 5, 2010 at 7:40 PM, Jason Dunsmore <emacs-orgmode@dunsmor.com>wrote:

> Carsten Dominik <carsten.dominik@gmail.com> writes:
>
> >> Hi
> >>
> >> my emacs is crashing quite regularly when I am using org-babel. Is
> >> there a way to get a traceback or something similar which I could
> >> submit to get an idea what is causing it?
> >
> > I think this has probably nothing to do with org-babel.  More likely,
> > you are using org-indent-mode, on an Emacs version where it does not
> > work.  Check the Org manual for the exact version of Emacs you need.
>
> I was bitten by this same bug.  I narrowed it down to org-indent, but I
> had no idea I should look in the manual to see which version of emacs
> org-indent was compatible with.
>
> Here's a patch that will make emacs display an error if org-indent is
> loaded with an incompatible version of emacs:
>
> --8<---------------cut here---------------start------------->8---
> diff --git a/lisp/org-indent.el b/lisp/org-indent.el
> index 77411af..0ef8456 100644
> --- a/lisp/org-indent.el
> +++ b/lisp/org-indent.el
> @@ -131,6 +131,18 @@ FIXME:  How to update when broken?"
>       (setq org-indent-mode nil)
>     (if org-indent-mode
>        (progn
> +          (destructuring-bind (maj min bld)
> +              (mapcar 'string-to-number (split-string emacs-version
> "[.]"))
> +            (let ((msg "Emacs 23.1.50.3 or greater is recommended for
> org-indent
> +              (when (< maj 23)
> +                (display-warning 'org msg :warning))
> +              (when (= maj 23)
> +                (unless (>= bld 50)
> +                  (display-warning 'org msg :warning)))
> +              (when (and (= maj 23)
> +                         (= bld 50))
> +                (unless (>= min 1)
> +                  (display-warning 'org msg :warning)))))
>          (org-set-local 'indent-tabs-mode nil)
>          (or org-indent-strings (org-indent-initialize))
>          (when org-indent-mode-turns-off-org-adapt-indentation
> --8<---------------cut here---------------end--------------->8---
>
> Perhaps this would be better as a separate function:
>
> --8<---------------cut here---------------start------------->8---
> (defun org-version-check (version feature level)
>  (destructuring-bind (rmaj rmin rbld)
>      (mapcar 'string-to-number (split-string version "[.]"))
>    (destructuring-bind (maj min bld)
>        (mapcar 'string-to-number (split-string emacs-version "[.]"))
>      (let ((msg (format "Emacs %s or greater is recommended for %s" version
>                         feature)))
>        (when (< maj rmaj)
>          (display-warning 'org msg level))
>        (when (= maj rmaj)
>          (unless (>= min rmin)
>            (display-warning 'org msg level)))
>        (when (and (= maj rmaj)
>                   (= min rmin))
>          (unless (>= bld rbld)
>            (display-warning 'org msg level)))))))
> --8<---------------cut here---------------end--------------->8---
>
> It could then be called with:
>
> (org-version-check "23.1.50" "org-indent" :warning)
>
> I made it display a warning because org-indent seems to work almost
> perfectly with the version of emacs I'm running (23.1.1).
>

I think that is a brilliant idea, especially as the repositories from ubuntu
do not yet include emacs 23.2.

Cheers,

Rainer


> Regards,
> Jason
>
> _______________________________________________
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  reply	other threads:[~2010-07-05 20:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-05  9:23 Crash of emacs when using SHIFT-TAB Rainer M Krug
2010-07-05 12:47 ` Carsten Dominik
2010-07-05 17:40   ` Jason Dunsmore
2010-07-05 20:34     ` Rainer M Krug [this message]
2010-07-06  8:25     ` Carsten Dominik

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