Hi there,

I am play with John’s ox-word.el function, which us pandoc to convert org via latex to docx. However, when I try to use it, I get  the following error

helm-M-x: Wrong type argument: stringp, nil


Any suggestion on how to resolve this issue.

Cheers,
M

Ps Here is the backtrace

Debugger entered--Lisp error: (void-function my-other-delete-trailing-blank-lines)
  my-other-delete-trailing-blank-lines()
  run-hooks(before-save-hook)
  basic-save-buffer(nil)
  save-buffer()
  write-file("./test.tex.tex")
  (let ((coding-system-for-write encoding)) (write-file file))
  (progn (insert output) (let ((coding-system-for-write encoding)) (write-file file)))
  (unwind-protect (progn (insert output) (let ((coding-system-for-write encoding)) (write-file file))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer)))
  (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (insert output) (let ((coding-system-for-write encoding)) (write-file file))) (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 (insert output) (let ((coding-system-for-write encoding)) (write-file file))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer)))))
  (let ((output (org-export-as backend subtreep visible-only body-only ext-plist))) (let ((temp-buffer (generate-new-buffer " *temp*"))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (insert output) (let ((coding-system-for-write encoding)) (write-file file))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer))))) (if (and (org-export--copy-to-kill-ring-p) (org-string-nw-p output)) (progn (org-kill-new output))) (or (and (functionp post-process) (funcall post-process file)) file))
  (if async (let ((with-temp-message "Initializing asynchronous export process") (current-message)) (unwind-protect (progn (if with-temp-message (progn (setq current-message (current-message)) (message "%s" with-temp-message))) (let ((--copy-fun (org-export--generate-copy-script ...)) (--temp-file (make-temp-file "org-export-process")) (--coding buffer-file-coding-system)) (let ((temp-file --temp-file) (temp-buffer ...)) (unwind-protect (prog1 ... ...) (and ... ...))) (let* ((process-connection-type nil) (--proc-buffer ...) (--process ...)) (org-export-add-to-stack (get-buffer --proc-buffer) nil --process) (let (...) (set-process-sentinel --process ...))))) (and with-temp-message (if current-message (message "%s" current-message) (message nil))))) (let ((output (org-export-as backend subtreep visible-only body-only ext-plist))) (let ((temp-buffer (generate-new-buffer " *temp*"))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (insert output) (let (...) (write-file file))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer))))) (if (and (org-export--copy-to-kill-ring-p) (org-string-nw-p output)) (progn (org-kill-new output))) (or (and (functionp post-process) (funcall post-process file)) file)))
  (let ((ext-plist (org-combine-plists (list (quote :output-file) file) ext-plist)) (encoding (or org-export-coding-system buffer-file-coding-system))) (if async (let ((with-temp-message "Initializing asynchronous export process") (current-message)) (unwind-protect (progn (if with-temp-message (progn (setq current-message ...) (message "%s" with-temp-message))) (let ((--copy-fun ...) (--temp-file ...) (--coding buffer-file-coding-system)) (let (... ...) (unwind-protect ... ...)) (let* (... ... ...) (org-export-add-to-stack ... nil --process) (let ... ...)))) (and with-temp-message (if current-message (message "%s" current-message) (message nil))))) (let ((output (org-export-as backend subtreep visible-only body-only ext-plist))) (let ((temp-buffer (generate-new-buffer " *temp*"))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (insert output) (let ... ...)) (and (buffer-name temp-buffer) (kill-buffer temp-buffer))))) (if (and (org-export--copy-to-kill-ring-p) (org-string-nw-p output)) (progn (org-kill-new output))) (or (and (functionp post-process) (funcall post-process file)) file))))
  (if (not (file-writable-p file)) (error "Output file not writable") (let ((ext-plist (org-combine-plists (list (quote :output-file) file) ext-plist)) (encoding (or org-export-coding-system buffer-file-coding-system))) (if async (let ((with-temp-message "Initializing asynchronous export process") (current-message)) (unwind-protect (progn (if with-temp-message (progn ... ...)) (let (... ... ...) (let ... ...) (let* ... ... ...))) (and with-temp-message (if current-message (message "%s" current-message) (message nil))))) (let ((output (org-export-as backend subtreep visible-only body-only ext-plist))) (let ((temp-buffer (generate-new-buffer " *temp*"))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn ... ...) (and ... ...)))) (if (and (org-export--copy-to-kill-ring-p) (org-string-nw-p output)) (progn (org-kill-new output))) (or (and (functionp post-process) (funcall post-process file)) file)))))
  org-export-to-file(latex "./test.tex.tex" nil nil nil nil nil)
  (let ((outfile (org-export-output-file-name ".tex" subtreep))) (org-export-to-file (quote latex) outfile async subtreep visible-only body-only ext-plist))
  org-latex-export-to-latex(nil nil nil nil nil)
  (let* ((bibfiles (mapcar (quote expand-file-name) (org-ref-find-bibliography))) (temp-bib) (bibtex-entries) biboption csl (current-file (buffer-file-name)) (basename (file-name-sans-extension current-file)) (tex-file (concat basename ".tex")) (docx-file (concat basename ".docx"))) (save-buffer) (if bibfiles (progn (setq bibtex-entries (let* ((bibtex-files bibfiles) (keys (reverse ...)) (bibtex-entry-kill-ring-max (length keys)) (bibtex-entry-kill-ring (quote nil))) (let ((wconfig ...)) (unwind-protect (progn ...) (set-window-configuration wconfig))) (mapconcat (quote identity) bibtex-entry-kill-ring "\n\n")) temp-bib (make-temp-file "ox-word-" nil ".bib") biboption (format " --bibliography=%s " temp-bib)) (let ((temp-file temp-bib) (temp-buffer (get-buffer-create (generate-new-buffer-name " *temp file*")))) (unwind-protect (prog1 (save-current-buffer (set-buffer temp-buffer) (insert bibtex-entries)) (save-current-buffer (set-buffer temp-buffer) (write-region nil nil temp-file nil 0))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer)))))) (setq csl (cdr (assoc "PANDOC-CSL" (org-element-map (org-element-parse-buffer) (quote keyword) (function (lambda (key) (cons ... ...))))))) (if csl (setq csl (format " --csl=%s " csl)) (setq csl " ")) (org-latex-export-to-latex async subtreep visible-only body-only options) (if (file-exists-p docx-file) (progn (delete-file docx-file))) (shell-command (format "pandoc -s -S %s%s\"%s\" -o \"%s\"" biboption csl tex-file docx-file)) (delete-file temp-bib) (org-open-file docx-file (quote (16))))
  ox-export-via-latex-pandoc-to-docx-and-open()
  funcall-interactively(ox-export-via-latex-pandoc-to-docx-and-open)
  call-interactively(ox-export-via-latex-pandoc-to-docx-and-open record nil)
  command-execute(ox-export-via-latex-pandoc-to-docx-and-open record)
  helm-M-x(nil #("ox-export-via-latex-pandoc-to-docx-and-open" 0 43 (match-part "ox-export-via-latex-pandoc-to-docx-and-open")))
  funcall-interactively(helm-M-x nil #("ox-export-via-latex-pandoc-to-docx-and-open" 0 43 (match-part "ox-export-via-latex-pandoc-to-docx-and-open")))
  call-interactively(helm-M-x nil nil)
  command-execute(helm-M-x)