Fixed, thanks.

- Carsten

On Dec 21, 2008, at 2:36 AM, Hugh Daschbach wrote:

> XEmacs throws a wrong-type-argument exception from org-export-as-pdf
> if org file contains '&'.  See sample document, traceback, and patch
> below.
>
> This may well not be the best fix.  And it's not clear why this issue
> doesn't exist in Emacs.  But there are several regular expressions in
> org-export-latex-special-chars that call
> org-export-latex-treat-backslash-char with a nil value for
> string-after.  The regular expression that matched "MB&A" is
> "\\(.\\|^\\)\\(&\\)".  So there is no (match-string 3).
>
> Here's a document that generates the exception:
>
> --8<---------------cut here---------------start------------->8---
> * Header
>
> MB&A
>
> * Footer
> --8<---------------cut here---------------end--------------->8---
>
> Here's the traceback:
>
> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>  string-match("^[ \n	]" nil)
>  (not (string-match "^[ \n	]" string-after))
>  (and (not (string-match "^[ \n	]" string-after)) (not (string-match  
> "[ 	]\\'\\|^" string-before)))
>  (cond ((member ... org-html-entities) (concat string-before "$\ 
> \" ... "$")) ((and ... ...) (org-export-latex-protect-string ...))  
> ((not ...) (org-export-latex-protect-string ...)) ((and ... ...)  
> (org-export-latex-protect-string ...)) (t (org-export-latex-protect- 
> string ...)))
>  org-export-latex-treat-backslash-char("B" nil)
>  #<compiled-function (c) "...(304)" [sub-superscript match-data  
> match-data match-data match-data c re-search-forward nil t get-text- 
> property 2 org-protected match-string ("\\$" "$") "\\$" replace- 
> match 1 "$" 3 ("&" "%" "#") "\\" "..." org-export-latex-protect- 
> string "\\ldots{}" "~" 0 face org-link "\\~" "\\~{}" ("{" "}") match- 
> data (...) org-inside-LaTeX-fragment-p (...) (...) org-export-latex- 
> treat-backslash-char "" ("_" "^") (...) org-export-latex-treat-sub- 
> super-char] 7>("\\(.\\|^\\)\\(&\\)")
>  mapc-internal(#<compiled-function (c) "...(304)" [sub-superscript  
> match-data match-data match-data match-data c re-search-forward nil  
> t get-text-property 2 org-protected match-string ("\\$" "$") "\\$"  
> replace-match 1 "$" 3 ("&" "%" "#") "\\" "..." org-export-latex- 
> protect-string "\\ldots{}" "~" 0 face org-link "\\~" "\\~{}" ("{"  
> "}") match-data (...) org-inside-LaTeX-fragment-p (...) (...) org- 
> export-latex-treat-backslash-char "" ("_" "^") (...) org-export- 
> latex-treat-sub-super-char] 7> ("^\\([^\n$]*?\\|^\\)\\(\\\\?\\$\\)\\ 
> ([^\n$]*\\)$" "\\([a-za-z0-9]+\\|[ 	\n]\\|\\b\\|\\\\\\)\\(_\\|\\^\\)\ 
> \([a-za-z0-9]+\\|[ 	\n]\\|[:punct:]\\|{[a-za-z0-9]+}\\|([a-za-z0-9]+) 
> \\)" "\\(.\\|^\\)\\(\\\\\\)\\([ 	\n]\\|[a-zA-Z&#%{}\"]+\\)" "\\(.\\|^ 
> \\)\\(&\\)" "\\(.\\|^\\)\\(#\\)" "\\(.\\|^\\)\\(%\\)" "\\(.\\|^\\)\\ 
> ({\\)" "\\(.\\|^\\)\\(}\\)" "\\(.\\|^\\)\\(~\\)" "\\(.\\|^\\)\\(\\.\ 
> \.\\.\\)"))
>  mapc(#<compiled-function (c) "...(304)" [sub-superscript match-data  
> match-data match-data match-data c re-search-forward nil t get-text- 
> property 2 org-protected match-string ("\\$" "$") "\\$" replace- 
> match 1 "$" 3 ("&" "%" "#") "\\" "..." org-export-latex-protect- 
> string "\\ldots{}" "~" 0 face org-link "\\~" "\\~{}" ("{" "}") match- 
> data (...) org-inside-LaTeX-fragment-p (...) (...) org-export-latex- 
> treat-backslash-char "" ("_" "^") (...) org-export-latex-treat-sub- 
> super-char] 7> ("^\\([^\n$]*?\\|^\\)\\(\\\\?\\$\\)\\([^\n$]*\\)$" "\\ 
> ([a-za-z0-9]+\\|[ 	\n]\\|\\b\\|\\\\\\)\\(_\\|\\^\\)\\([a-za-z0-9]+\\| 
> [ 	\n]\\|[:punct:]\\|{[a-za-z0-9]+}\\|([a-za-z0-9]+)\\)" "\\(.\\|^\\) 
> \\(\\\\\\)\\([ 	\n]\\|[a-zA-Z&#%{}\"]+\\)" "\\(.\\|^\\)\\(&\\)" "\\(. 
> \\|^\\)\\(#\\)" "\\(.\\|^\\)\\(%\\)" "\\(.\\|^\\)\\({\\)" "\\(.\\|^\ 
> \)\\(}\\)" "\\(.\\|^\\)\\(~\\)" "\\(.\\|^\\)\\(\\.\\.\\.\\)"))
>  org-export-latex-special-chars(t)
>  org-export-latex-content("\nMB&A\n\n")
>  org-export-latex-first-lines(nil)
>  org-export-as-latex(nil nil nil nil nil nil)
>  org-export-as-pdf(nil)
>  call-interactively(org-export-as-pdf)
>  command-execute(org-export-as-pdf t)
>  execute-extended-command(nil)
>  call-interactively(execute-extended-command)
> ---
> lisp/org-export-latex.el |    1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/lisp/org-export-latex.el b/lisp/org-export-latex.el
> index fa6a0e4..60795fb 100644
> --- a/lisp/org-export-latex.el
> +++ b/lisp/org-export-latex.el
> @@ -976,6 +976,7 @@ The conversion is made depending of STRING- 
> BEFORE and STRING-AFTER."
> 	 (concat string-before "$\\"
> 		 (or (cdar (member (list string-after) org-html-entities))
> 		     string-after) "$"))
> +	((null string-after) (concat string-before "\\"))
> 	((and (not (string-match "^[ \n\t]" string-after))
> 	      (not (string-match "[ \t]\\'\\|^" string-before)))
> 	 ;; backslash is inside a word
> -- 
> 1.5.6.3
>
>
>
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