On Mon, Jul 5, 2010 at 7:40 PM, Jason Du= nsmore <e= macs-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<= br> >> submit to get an idea what is causing it?
>
> I think this has probably nothing to do with org-babel. =A0More likely= ,
> you are using org-indent-mode, on an Emacs version where it does not > work. =A0Check the Org manual for the exact version of Emacs you need.=

I was bitten by this same bug. =A0I narrowed it down to org-indent, b= ut 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: =A0How to update when broken?"
=A0 =A0 =A0 (setq org-indent-mode nil)
=A0 =A0 (if org-indent-mode
=A0 =A0 =A0 =A0(progn
+ =A0 =A0 =A0 =A0 =A0(destructuring-bind (maj min bld)
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0(mapcar 'string-to-number (split-string em= acs-version "[.]"))
+ =A0 =A0 =A0 =A0 =A0 =A0(let ((msg "Emacs 23.1.50.3 or greater is rec= ommended for org-indent
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0(when (< maj 23)
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(display-warning 'org msg :warning)) + =A0 =A0 =A0 =A0 =A0 =A0 =A0(when (=3D maj 23)
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(unless (>=3D bld 50)
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(display-warning 'org msg :warning= )))
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0(when (and (=3D maj 23)
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 (=3D bld 50))
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(unless (>=3D min 1)
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(display-warning 'org msg :warning= )))))
=A0 =A0 =A0 =A0 =A0(org-set-local 'indent-tabs-mode nil)
=A0 =A0 =A0 =A0 =A0(or org-indent-strings (org-indent-initialize))
=A0 =A0 =A0 =A0 =A0(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)
=A0(destructuring-bind (rmaj rmin rbld)
=A0 =A0 =A0(mapcar 'string-to-number (split-string version "[.]&q= uot;))
=A0 =A0(destructuring-bind (maj min bld)
=A0 =A0 =A0 =A0(mapcar 'string-to-number (split-string emacs-version &= quot;[.]"))
=A0 =A0 =A0(let ((msg (format "Emacs %s or greater is recommended for= %s" version
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 feature)))
=A0 =A0 =A0 =A0(when (< maj rmaj)
=A0 =A0 =A0 =A0 =A0(display-warning 'org msg level))
=A0 =A0 =A0 =A0(when (=3D maj rmaj)
=A0 =A0 =A0 =A0 =A0(unless (>=3D min rmin)
=A0 =A0 =A0 =A0 =A0 =A0(display-warning 'org msg level)))
=A0 =A0 =A0 =A0(when (and (=3D maj rmaj)
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 (=3D min rmin))
=A0 =A0 =A0 =A0 =A0(unless (>=3D bld rbld)
=A0 =A0 =A0 =A0 =A0 =A0(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 repositorie= s from ubuntu do not yet include emacs 23.2.

Cheers,

Rainer

Regards,
Jason

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