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 _______________________________________________ Emacs-orgmode mailing list Remember: use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode