Hello, when exporting buffers containing nothing or just empty lines, like:
#+BEGIN_SRC emacs-lisp (with-temp-buffer (org-mode) (insert "") (org-export-to-buffer 'html "*Formatted Copy*" nil nil t t)) #+END_SRC then org-export-to-buffer throws an error: #+BEGIN_QUOTE Debugger entered--Lisp error: (wrong-type-argument char-or-string-p nil) org-export-to-buffer(html "*Formatted Copy*" nil nil t t) (progn (org-mode) (insert "") (org-export-to-buffer (quote html) "*Formatted Copy*" nil nil t t)) (unwind-protect (progn (org-mode) (insert "") (org-export-to-buffer (quote html) "*Formatted Copy*" nil nil t t)) (and (buffer-name temp-buffer) (kill-buffer temp-buffer))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (org-mode) (insert "") (org-export-to-buffer (quote html) "*Formatted Copy*" nil nil t t)) (and (buffer-name temp-buffer) (kill-buffer temp-buffer)))) (let ((temp-buffer (generate-new-buffer " *temp*"))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (org-mode) (insert "") (org-export-to-buffer (quote html) "*Formatted Copy*" nil nil t t)) (and (buffer-name temp-buffer) (kill-buffer temp-buffer))))) eval((let ((temp-buffer (generate-new-buffer " *temp*"))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (org-mode) (insert "") (org-export-to-buffer (quote html) "*Formatted Copy*" nil nil t t)) (and (buffer-name temp-buffer) (kill-buffer temp-buffer))))) nil) elisp--eval-last-sexp(nil) eval-last-sexp(nil) funcall-interactively(eval-last-sexp nil) call-interactively(eval-last-sexp nil nil) command-execute(eval-last-sexp) #+END_QUOTE Reason for this is located here: #+BEGIN_SRC emacs-lisp (defun org-export-to-buffer (backend buffer &optional async subtreep visible-only body-only ext-plist post-process) .. (let ((output (org-export-as backend subtreep visible-only body-only ext-plist)) (buffer (get-buffer-create buffer)) (encoding buffer-file-coding-system)) (when (and (org-string-nw-p output) (org-export--copy-to-kill-ring-p)) (org-kill-new output)) (with-current-buffer buffer (erase-buffer) (setq buffer-file-coding-system encoding) --> (insert output) (goto-char (point-min)) (and (functionp post-process) (funcall post-process))) (when org-export-show-temporary-export-buffer (switch-to-buffer-other-window buffer)) buffer))) #+END_SRC In the explained case the output is nil. This gives the error. With kind regards, Stefan Emacs : GNU Emacs 25.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9) of 2016-10-23 Package: Org mode version 9.0 (release_9.0-6-gf56456 @ /home/hs/.emacs.d/git/org-mode/lisp/) -- Stefan-W. Hahn It is easy to make things. It is hard to make things simple.