From mboxrd@z Thu Jan  1 00:00:00 1970
From: Simon Thum <simon.thum@gmx.de>
Subject: New exporter: minor issue
Date: Sun, 03 Mar 2013 18:01:23 +0100
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To: Nicolas Goaziou <n.goaziou@gmail.com>
Cc: emacs-orgmode <emacs-orgmode@gnu.org>

Hi Nicolas,

I have scripted an ical export that invokes:

org-icalendar-combine-agenda-files

but the thing fails on my server and home boxes. I investigated and 
found that a misguided babel block I added in a hurry and forgot about 
was causing trouble:

#+BEGIN_SRC xml

#+END_SRC

It seems this was the culprit, so I'm reporting this so maybe the 
failure can be made more graceful. One thing I noted that while I was 
informed of the temp .ics files I had no idea which file it was failing 
on - I assumed it would be when combining.

Anyway, ascii export had the same trouble on this file so it's generic, 
and may actually be a bug, or that's what it looks to me.

The failure is:

Debugger entered--Lisp error: (wrong-number-of-arguments max 0)
   max()
   apply(max nil)
   (+ (apply (quote max) (mapcar (quote length) code-lines)) (if (not 
num-start) 0 (length (format num-fmt num-start))))
   (let* ((code-info (org-export-unravel-code element)) (code (car 
code-info)) (code-lines (org-split-string code "\n")) (refs (and 
(org-element-property :retain-labels element) (cdr code-info))) 
(num-start (case (org-element-property :number-lines element) (continued 
(org-export-get-loc element info)) (new 0))) (num-fmt (and num-start 
(format "%%%ds  " (length (number-to-string (+ ... num-start)))))) 
(max-width (+ (apply (quote max) (mapcar (quote length) code-lines)) (if 
(not num-start) 0 (length (format num-fmt num-start)))))) 
(org-export-format-code code (lambda (loc line-num ref) (let 
((number-str (and num-fmt (format num-fmt line-num)))) (concat 
number-str loc (and ref (concat (make-string ... 32) (format "(%s)" 
ref)))))) num-start refs))
   org-export-format-code-default((src-block (:language "xml" ...