org-cite-basic--get-field (error "Wrong value for ENTRY-OR-KEY: nil") on emacs master 29.x

[kaushalmodi]

Update (2022-05-12)

The upstream bug in emacs master has been fixed in https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d221c02fa1db17e1275687f0bbce4ff1499119a1, and verified.

This issue can be closed once the emacs snapshot version used by GHA gets updated. Ref: purcell/nix-emacs-ci#75.

Emacs bug

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=55342

More info

The CI fails when using emacs master (Emacs 29.0.50) build when exporting the "Org Cite Basic Example" post from the test suite.

https://github.com/kaushalmodi/ox-hugo/runs/6352764912?check_suite_focus=true#step:5:597

[ox-hugo] 275/ Exporting ‘Org Cite Basic Example’ ..
Debugger entered--Lisp error: (error "Wrong value for ENTRY-OR-KEY: nil")
  signal(error ("Wrong value for ENTRY-OR-KEY: nil"))
  error("Wrong value for ENTRY-OR-KEY: %S" nil)
  org-cite-basic--get-field(author nil (:export-options (subtree) :back-end #s(org-export-backend :name hugo :parent blackfriday :transcoders ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block)) :options ((:with-toc nil "toc" org-hugo-export-with-toc) (:section-numbers nil "num" org-hugo-export-with-section-numbers) (:author "AUTHOR" nil user-full-name newline) (:creator "CREATOR" nil org-hugo-export-creator-string) (:with-smart-quotes nil "'" nil) (:with-special-strings nil "-" nil) (:with-sub-superscript nil "^" ...) (:hugo-with-locale "HUGO_WITH_LOCALE" nil nil) (:hugo-front-matter-format "HUGO_FRONT_MATTER_FORMAT" nil org-hugo-front-matter-format) (:hugo-level-offset "HUGO_LEVEL_OFFSET" nil "1") (:hugo-preserve-filling "HUGO_PRESERVE_FILLING" nil org-hugo-preserve-filling) (:hugo-delete-trailing-ws "HUGO_DELETE_TRAILING_WS" nil org-hugo-delete-trailing-ws) (:hugo-section "HUGO_SECTION" nil org-hugo-section) (:hugo-bundle "HUGO_BUNDLE" nil nil) (:hugo-base-dir "HUGO_BASE_DIR" nil org-hugo-base-dir) (:hugo-goldmark "HUGO_GOLDMARK" nil org-hugo-goldmark) (:hugo-code-fence "HUGO_CODE_FENCE" nil t) (:hugo-use-code-for-kbd "HUGO_USE_CODE_FOR_KBD" nil org-hugo-use-code-for-kbd) (:hugo-prefer-hyphen-in-tags "HUGO_PREFER_HYPHEN_IN_TAGS" nil org-hugo-prefer-hyphen-in-tags) (:hugo-allow-spaces-in-tags "HUGO_ALLOW_SPACES_IN_TAGS" nil org-hugo-allow-spaces-in-tags) (:hugo-auto-set-lastmod "HUGO_AUTO_SET_LASTMOD" nil org-hugo-auto-set-lastmod) (:hugo-custom-front-matter "HUGO_CUSTOM_FRONT_MATTER" nil nil space) (:hugo-blackfriday "HUGO_BLACKFRIDAY" nil nil space) (:hugo-front-matter-key-replace "HUGO_FRONT_MATTER_KEY_REPLACE" nil nil space) (:hugo-date-format "HUGO_DATE_FORMAT" nil org-hugo-date-format) (:hugo-paired-shortcodes "HUGO_PAIRED_SHORTCODES" nil org-hugo-paired-shortcodes space) (:hugo-pandoc-citations "HUGO_PANDOC_CITATIONS" nil nil) (:bibliography "BIBLIOGRAPHY" nil nil newline) (:html-container "HTML_CONTAINER" nil org-hugo-container-element) (:html-container-class "HTML_CONTAINER_CLASS" nil "") (:hugo-aliases "HUGO_ALIASES" nil nil space) (:hugo-audio "HUGO_AUDIO" nil nil) ...) :filters ((:filter-body . org-hugo-body-filter)) :blocks nil :menu (72 "Export to Hugo-compatible Markdo..." (... ... ... ... ... ...))) :translate-alist ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block) (center-block . org-blackfriday-center-block) (example-block . org-blackfriday-example-block) (fixed-width . org-blackfriday-fixed-width) (footnote-reference . org-blackfriday-footnote-reference) (inner-template . org-blackfriday-inner-template) (italic . org-blackfriday-italic) (item . org-blackfriday-item) (latex-environment . org-blackfriday-latex-environment) (latex-fragment . org-blackfriday-latex-fragment) (line-break . org-html-line-break) (plain-list . org-blackfriday-plain-list) (plain-text . org-blackfriday-plain-text) (quote-block . org-blackfriday-quote-block) (radio-target . org-blackfriday-radio-target) (special-block . org-blackfriday-special-block) (src-block . org-blackfriday-src-block) (strike-through . org-blackfriday-strike-through) (table-cell . org-blackfriday-table-cell) (table-row . org-blackfriday-table-row) (table . org-blackfriday-table) ...) :exported-data #<hash-table eq 5/4001 0x13a9641> :input-buffer "*Ox-hugo Pre-processed all-posts..." :input-file "/home/runner/work/ox-hugo/ox-hug..." :with-toc nil :section-numbers nil :author "" :creator "Emacs + Org mode + ox-hugo" :with-smart-quotes nil :with-special-strings nil :with-sub-superscript {} :hugo-with-locale nil :hugo-front-matter-format "toml" :hugo-level-offset "1" ...))
  org-cite-basic--print-entry(nil nil (:export-options (subtree) :back-end #s(org-export-backend :name hugo :parent blackfriday :transcoders ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block)) :options ((:with-toc nil "toc" org-hugo-export-with-toc) (:section-numbers nil "num" org-hugo-export-with-section-numbers) (:author "AUTHOR" nil user-full-name newline) (:creator "CREATOR" nil org-hugo-export-creator-string) (:with-smart-quotes nil "'" nil) (:with-special-strings nil "-" nil) (:with-sub-superscript nil "^" ...) (:hugo-with-locale "HUGO_WITH_LOCALE" nil nil) (:hugo-front-matter-format "HUGO_FRONT_MATTER_FORMAT" nil org-hugo-front-matter-format) (:hugo-level-offset "HUGO_LEVEL_OFFSET" nil "1") (:hugo-preserve-filling "HUGO_PRESERVE_FILLING" nil org-hugo-preserve-filling) (:hugo-delete-trailing-ws "HUGO_DELETE_TRAILING_WS" nil org-hugo-delete-trailing-ws) (:hugo-section "HUGO_SECTION" nil org-hugo-section) (:hugo-bundle "HUGO_BUNDLE" nil nil) (:hugo-base-dir "HUGO_BASE_DIR" nil org-hugo-base-dir) (:hugo-goldmark "HUGO_GOLDMARK" nil org-hugo-goldmark) (:hugo-code-fence "HUGO_CODE_FENCE" nil t) (:hugo-use-code-for-kbd "HUGO_USE_CODE_FOR_KBD" nil org-hugo-use-code-for-kbd) (:hugo-prefer-hyphen-in-tags "HUGO_PREFER_HYPHEN_IN_TAGS" nil org-hugo-prefer-hyphen-in-tags) (:hugo-allow-spaces-in-tags "HUGO_ALLOW_SPACES_IN_TAGS" nil org-hugo-allow-spaces-in-tags) (:hugo-auto-set-lastmod "HUGO_AUTO_SET_LASTMOD" nil org-hugo-auto-set-lastmod) (:hugo-custom-front-matter "HUGO_CUSTOM_FRONT_MATTER" nil nil space) (:hugo-blackfriday "HUGO_BLACKFRIDAY" nil nil space) (:hugo-front-matter-key-replace "HUGO_FRONT_MATTER_KEY_REPLACE" nil nil space) (:hugo-date-format "HUGO_DATE_FORMAT" nil org-hugo-date-format) (:hugo-paired-shortcodes "HUGO_PAIRED_SHORTCODES" nil org-hugo-paired-shortcodes space) (:hugo-pandoc-citations "HUGO_PANDOC_CITATIONS" nil nil) (:bibliography "BIBLIOGRAPHY" nil nil newline) (:html-container "HTML_CONTAINER" nil org-hugo-container-element) (:html-container-class "HTML_CONTAINER_CLASS" nil "") (:hugo-aliases "HUGO_ALIASES" nil nil space) (:hugo-audio "HUGO_AUDIO" nil nil) ...) :filters ((:filter-body . org-hugo-body-filter)) :blocks nil :menu (72 "Export to Hugo-compatible Markdo..." (... ... ... ... ... ...))) :translate-alist ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block) (center-block . org-blackfriday-center-block) (example-block . org-blackfriday-example-block) (fixed-width . org-blackfriday-fixed-width) (footnote-reference . org-blackfriday-footnote-reference) (inner-template . org-blackfriday-inner-template) (italic . org-blackfriday-italic) (item . org-blackfriday-item) (latex-environment . org-blackfriday-latex-environment) (latex-fragment . org-blackfriday-latex-fragment) (line-break . org-html-line-break) (plain-list . org-blackfriday-plain-list) (plain-text . org-blackfriday-plain-text) (quote-block . org-blackfriday-quote-block) (radio-target . org-blackfriday-radio-target) (special-block . org-blackfriday-special-block) (src-block . org-blackfriday-src-block) (strike-through . org-blackfriday-strike-through) (table-cell . org-blackfriday-table-cell) (table-row . org-blackfriday-table-row) (table . org-blackfriday-table) ...) :exported-data #<hash-table eq 5/4001 0x13a9641> :input-buffer "*Ox-hugo Pre-processed all-posts..." :input-file "/home/runner/work/ox-hugo/ox-hug..." :with-toc nil :section-numbers nil :author "" :creator "Emacs + Org mode + ox-hugo" :with-smart-quotes nil :with-special-strings nil :with-sub-superscript {} :hugo-with-locale nil :hugo-front-matter-format "toml" :hugo-level-offset "1" ...))
  #f(compiled-function (k) #<bytecode -0x1031153bd444570b>)("OrgCitations")
  mapconcat(#f(compiled-function (k) #<bytecode -0x1031153bd444570b>) ("OrgCitations") "\n")
  org-cite-basic-export-bibliography(("OrgCitations") ("/home/runner/work/ox-hugo/...") nil nil #s(org-export-backend :name hugo :parent blackfriday :transcoders ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block)) :options ((:with-toc nil "toc" org-hugo-export-with-toc) (:section-numbers nil "num" org-hugo-export-with-section-numbers) (:author "AUTHOR" nil user-full-name newline) (:creator "CREATOR" nil org-hugo-export-creator-string) (:with-smart-quotes nil "'" nil) (:with-special-strings nil "-" nil) (:with-sub-superscript nil "^" ...) (:hugo-with-locale "HUGO_WITH_LOCALE" nil nil) (:hugo-front-matter-format "HUGO_FRONT_MATTER_FORMAT" nil org-hugo-front-matter-format) (:hugo-level-offset "HUGO_LEVEL_OFFSET" nil "1") (:hugo-preserve-filling "HUGO_PRESERVE_FILLING" nil org-hugo-preserve-filling) (:hugo-delete-trailing-ws "HUGO_DELETE_TRAILING_WS" nil org-hugo-delete-trailing-ws) (:hugo-section "HUGO_SECTION" nil org-hugo-section) (:hugo-bundle "HUGO_BUNDLE" nil nil) (:hugo-base-dir "HUGO_BASE_DIR" nil org-hugo-base-dir) (:hugo-goldmark "HUGO_GOLDMARK" nil org-hugo-goldmark) (:hugo-code-fence "HUGO_CODE_FENCE" nil t) (:hugo-use-code-for-kbd "HUGO_USE_CODE_FOR_KBD" nil org-hugo-use-code-for-kbd) (:hugo-prefer-hyphen-in-tags "HUGO_PREFER_HYPHEN_IN_TAGS" nil org-hugo-prefer-hyphen-in-tags) (:hugo-allow-spaces-in-tags "HUGO_ALLOW_SPACES_IN_TAGS" nil org-hugo-allow-spaces-in-tags) (:hugo-auto-set-lastmod "HUGO_AUTO_SET_LASTMOD" nil org-hugo-auto-set-lastmod) (:hugo-custom-front-matter "HUGO_CUSTOM_FRONT_MATTER" nil nil space) (:hugo-blackfriday "HUGO_BLACKFRIDAY" nil nil space) (:hugo-front-matter-key-replace "HUGO_FRONT_MATTER_KEY_REPL..." nil nil space) (:hugo-date-format "HUGO_DATE_FORMAT" nil org-hugo-date-format) (:hugo-paired-shortcodes "HUGO_PAIRED_SHORTCODES" nil org-hugo-paired-shortcodes space) ...) :filters ((:filter-body . org-hugo-body-filter)) :blocks nil :menu (72 "Export to Hugo-compatible ..." (... ... ... ... ... ...))) (:export-options (subtree) :back-end #s(org-export-backend :name hugo :parent blackfriday :transcoders (... ... ... ... ... ... ... ... ... ... ... ...) :options (... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...) :filters (...) :blocks nil :menu (72 "Export to Hugo-compatible ..." ...)) :translate-alist ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block) (center-block . org-blackfriday-center-block) (example-block . org-blackfriday-example-block) (fixed-width . org-blackfriday-fixed-width) (footnote-reference . org-blackfriday-footnote-reference) (inner-template . org-blackfriday-inner-template) (italic . org-blackfriday-italic) (item . org-blackfriday-item) (latex-environment . org-blackfriday-latex-environment) (latex-fragment . org-blackfriday-latex-fragment) (line-break . org-html-line-break) (plain-list . org-blackfriday-plain-list) (plain-text . org-blackfriday-plain-text) (quote-block . org-blackfriday-quote-block) (radio-target . org-blackfriday-radio-target) ...) :exported-data #<hash-table eq 5/4001 0x13a9641> :input-buffer "*Ox-hugo Pre-processed all..." :input-file "/home/runner/work/ox-hugo/..." :with-toc nil :section-numbers nil :author "" :creator "Emacs + Org mode + ox-hugo" :with-smart-quotes nil :with-special-strings nil :with-sub-superscript {} ...))
  org-cite-export-bibliography((keyword (:key "PRINT_BIBLIOGRAPHY" :value "" :begin 201170 :end 201192 :post-blank 1 :post-affiliated 201170 :parent (section (:begin 201090 :end 201192 :contents-begin 201090 :contents-end 201192 :post-blank 1 :post-affiliated 201090 :parent ...) (paragraph ... ...) (src-block ...) (paragraph ... ...) #1))) nil (:export-options (subtree) :back-end #s(org-export-backend :name hugo :parent blackfriday :transcoders ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block)) :options ((:with-toc nil "toc" org-hugo-export-with-toc) (:section-numbers nil "num" org-hugo-export-with-section-numbers) (:author "AUTHOR" nil user-full-name newline) (:creator "CREATOR" nil org-hugo-export-creator-string) (:with-smart-quotes nil "'" nil) (:with-special-strings nil "-" nil) (:with-sub-superscript nil "^" ...) (:hugo-with-locale "HUGO_WITH_LOCALE" nil nil) (:hugo-front-matter-format "HUGO_FRONT_MATTER_FORMAT" nil org-hugo-front-matter-format) (:hugo-level-offset "HUGO_LEVEL_OFFSET" nil "1") (:hugo-preserve-filling "HUGO_PRESERVE_FILLING" nil org-hugo-preserve-filling) (:hugo-delete-trailing-ws "HUGO_DELETE_TRAILING_WS" nil org-hugo-delete-trailing-ws) (:hugo-section "HUGO_SECTION" nil org-hugo-section) (:hugo-bundle "HUGO_BUNDLE" nil nil) (:hugo-base-dir "HUGO_BASE_DIR" nil org-hugo-base-dir) (:hugo-goldmark "HUGO_GOLDMARK" nil org-hugo-goldmark) (:hugo-code-fence "HUGO_CODE_FENCE" nil t) (:hugo-use-code-for-kbd "HUGO_USE_CODE_FOR_KBD" nil org-hugo-use-code-for-kbd) (:hugo-prefer-hyphen-in-tags "HUGO_PREFER_HYPHEN_IN_TAGS" nil org-hugo-prefer-hyphen-in-tags) (:hugo-allow-spaces-in-tags "HUGO_ALLOW_SPACES_IN_TAGS" nil org-hugo-allow-spaces-in-tags) (:hugo-auto-set-lastmod "HUGO_AUTO_SET_LASTMOD" nil org-hugo-auto-set-lastmod) (:hugo-custom-front-matter "HUGO_CUSTOM_FRONT_MATTER" nil nil space) (:hugo-blackfriday "HUGO_BLACKFRIDAY" nil nil space) (:hugo-front-matter-key-replace "HUGO_FRONT_MATTER_KEY_REPLACE" nil nil space) (:hugo-date-format "HUGO_DATE_FORMAT" nil org-hugo-date-format) (:hugo-paired-shortcodes "HUGO_PAIRED_SHORTCODES" nil org-hugo-paired-shortcodes space) (:hugo-pandoc-citations "HUGO_PANDOC_CITATIONS" nil nil) (:bibliography "BIBLIOGRAPHY" nil nil newline) (:html-container "HTML_CONTAINER" nil org-hugo-container-element) (:html-container-class "HTML_CONTAINER_CLASS" nil "") (:hugo-aliases "HUGO_ALIASES" nil nil space) (:hugo-audio "HUGO_AUDIO" nil nil) ...) :filters ((:filter-body . org-hugo-body-filter)) :blocks nil :menu (72 "Export to Hugo-compatible Markdo..." (... ... ... ... ... ...))) :translate-alist ((code . org-hugo-kbd-tags-maybe) (example-block . org-hugo-example-block) (export-block . org-hugo-export-block) (export-snippet . org-hugo-export-snippet) (headline . org-hugo-heading) (inner-template . org-hugo-inner-template) (inline-src-block . org-hugo-inline-src-block) (keyword . org-hugo-keyword) (link . org-hugo-link) (paragraph . org-hugo-paragraph) (src-block . org-hugo-src-block) (special-block . org-hugo-special-block) (center-block . org-blackfriday-center-block) (example-block . org-blackfriday-example-block) (fixed-width . org-blackfriday-fixed-width) (footnote-reference . org-blackfriday-footnote-reference) (inner-template . org-blackfriday-inner-template) (italic . org-blackfriday-italic) (item . org-blackfriday-item) (latex-environment . org-blackfriday-latex-environment) (latex-fragment . org-blackfriday-latex-fragment) (line-break . org-html-line-break) (plain-list . org-blackfriday-plain-list) (plain-text . org-blackfriday-plain-text) (quote-block . org-blackfriday-quote-block) (radio-target . org-blackfriday-radio-target) (special-block . org-blackfriday-special-block) (src-block . org-blackfriday-src-block) (strike-through . org-blackfriday-strike-through) (table-cell . org-blackfriday-table-cell) (table-row . org-blackfriday-table-row) (table . org-blackfriday-table) ...) :exported-data #<hash-table eq 5/4001 0x13a9641> :input-buffer "*Ox-hugo Pre-processed all-posts..." :input-file "/home/runner/work/ox-hugo/ox-hug..." :with-toc nil :section-numbers nil :author "" :creator "Emacs + Org mode + ox-hugo" :with-smart-quotes nil :with-special-strings nil :with-sub-superscript {} :hugo-with-locale nil :hugo-front-matter-format "toml" :hugo-level-offset "1" ...))
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  org-export-as(hugo :subtreep nil nil (:output-file "/home/runner/work/ox-hugo/ox-hugo/test/site/conten..."))
...
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  (save-restriction (widen) (cond ((and buf-has-subtree all-subtrees) (let ((start-time (current-time))) (setq org-hugo--subtree-count 0) (let ((--dolist-tail-- org-hugo--all-subtrees-export--functions-to-silence)) (while --dolist-tail-- (let (...) (advice-add fn :around ...) (setq --dolist-tail-- ...)))) (if org-hugo--preprocess-buffer (let ((buffer ...)) (save-current-buffer (set-buffer buffer) (add-to-list ... buffer) (setq ret ...))) (setq ret (org-map-entries #'... "EXPORT_FILE_NAME<>\"\""))) (let* ((elapsed-time (float-time ...)) (avg-time (/ elapsed-time org-hugo--subtree-count))) (message "[ox-hugo] Exported %d subtree%s from %s in %0.3fs ..." org-hugo--subtree-count (if (= 1 org-hugo--subtree-count) "" "s") f-or-b-name elapsed-time avg-time)) (org-hugo--after-all-exports-function))) ((and buf-has-subtree (not all-subtrees)) (setq ret (org-hugo--export-subtree-to-md async visible-only))) (t (setq ret (org-hugo--export-file-to-md f-or-b-name async visible-only noerror)))))
  (save-excursion (save-restriction (widen) (cond ((and buf-has-subtree all-subtrees) (let ((start-time (current-time))) (setq org-hugo--subtree-count 0) (let ((--dolist-tail-- org-hugo--all-subtrees-export--functions-to-silence)) (while --dolist-tail-- (let ... ... ...))) (if org-hugo--preprocess-buffer (let (...) (save-current-buffer ... ... ...)) (setq ret (org-map-entries ... "EXPORT_FILE_NAME<>\"\""))) (let* ((elapsed-time ...) (avg-time ...)) (message "[ox-hugo] Exported %d subtree%s from %s in %0.3fs ..." org-hugo--subtree-count (if ... "" "s") f-or-b-name elapsed-time avg-time)) (org-hugo--after-all-exports-function))) ((and buf-has-subtree (not all-subtrees)) (setq ret (org-hugo--export-subtree-to-md async visible-only))) (t (setq ret (org-hugo--export-file-to-md f-or-b-name async visible-only noerror))))))
  (progn (save-excursion (save-restriction (widen) (cond ((and buf-has-subtree all-subtrees) (let ((start-time ...)) (setq org-hugo--subtree-count 0) (let (...) (while --dolist-tail-- ...)) (if org-hugo--preprocess-buffer (let ... ...) (setq ret ...)) (let* (... ...) (message "[ox-hugo] Exported %d subtree%s from %s in %0.3fs ..." org-hugo--subtree-count ... f-or-b-name elapsed-time avg-time)) (org-hugo--after-all-exports-function))) ((and buf-has-subtree (not all-subtrees)) (setq ret (org-hugo--export-subtree-to-md async visible-only))) (t (setq ret (org-hugo--export-file-to-md f-or-b-name async visible-only noerror)))))))
  (unwind-protect (progn (save-excursion (save-restriction (widen) (cond ((and buf-has-subtree all-subtrees) (let (...) (setq org-hugo--subtree-count 0) (let ... ...) (if org-hugo--preprocess-buffer ... ...) (let* ... ...) (org-hugo--after-all-exports-function))) ((and buf-has-subtree (not all-subtrees)) (setq ret (org-hugo--export-subtree-to-md async visible-only))) (t (setq ret (org-hugo--export-file-to-md f-or-b-name async visible-only noerror))))))) (set-window-configuration wconfig))
  (let ((wconfig (current-window-configuration))) (unwind-protect (progn (save-excursion (save-restriction (widen) (cond ((and buf-has-subtree all-subtrees) (let ... ... ... ... ... ...)) ((and buf-has-subtree ...) (setq ret ...)) (t (setq ret ...)))))) (set-window-configuration wconfig)))
  (let ((f-or-b-name (if (buffer-file-name) (file-name-nondirectory (buffer-file-name)) (buffer-name))) (buf-has-subtree (org-hugo--buffer-has-valid-post-subtree-p)) ret) (if (or (eq org-id-locations nil) (= 0 (hash-table-count org-id-locations))) (progn (org-id-update-id-locations (directory-files "." :full ".org$" :nosort) :silent))) (let ((wconfig (current-window-configuration))) (unwind-protect (progn (save-excursion (save-restriction (widen) (cond (... ...) (... ...) (t ...))))) (set-window-configuration wconfig))) ret)
  org-hugo-export-wim-to-md(:all-subtrees nil nil :noerror)
  org-hugo-export-all-wim-to-md()

[kaushalmodi]

After evaluating this:

(defun org-cite-basic--get-field (field entry-or-key &optional info raw)
  "Return FIELD value for ENTRY-OR-KEY, or nil.

FIELD is a symbol.  ENTRY-OR-KEY is either an association list, as returned by
`org-cite-basic--get-entry', or a string representing a citation key.

Optional argument INFO is the export state, as a property list.

Return value may be nil or a string.  If current export back-end is derived
from `latex', return a raw string instead, unless optional argument RAW is
non-nil."
  (message "field = %S" field)
  (message "  entry-or-key = %S" entry-or-key)
  (let ((value
         (cdr
          (assq field
                (pcase entry-or-key
                  ((pred stringp)
                   (org-cite-basic--get-entry entry-or-key info))
                  ((pred consp)
                   entry-or-key)
                  (_
                   (error "Wrong value for ENTRY-OR-KEY: %S" entry-or-key)))))))
    (if (and value
             (not raw)
             (org-export-derived-backend-p (plist-get info :back-end) 'latex))
        (org-export-raw-string value)
      value)))

.. when attempting to export [[file:all-posts.org::*Org Cite Basic Example]] ..

On emacs-28 branch

no error

Output in *Messages* buffer:

[ox-hugo] Exporting ‘Org Cite Basic Example’ ..
org-babel-exp process org at position 199628...
org-babel-exp process org at position 199897...
field = author
  entry-or-key = "OrgCitations"
field = author
  entry-or-key = "OrgCitations"
field = year
  entry-or-key = "OrgCitations"
field = author
  entry-or-key = ((type . "article") (id . "OrgCitations") (author . #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent (paragraph nil #2 #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #("Journal of Plain Text Formats" 0 29 (:parent #4)) #("." 0 1 (:parent #4)))))) (journal . #("Journal of Plain Text Formats" 0 29 (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #4)) #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #2 #("." 0 1 (:parent #4)))))) (title . #("Elegant Citations with Org-Mode" 0 31 (:parent (italic (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #6)) #(" (" 0 2 (:parent #6)) #("2021" 0 4 (:parent #6)) #("). " 0 3 (:parent #6)) #4 #(", " 0 2 (:parent #6)) #("Journal of Plain Text Formats" 0 29 (:parent #6)) #("." 0 1 (:parent #6)))) #2)))) (year . "2021") (month . "7") (volume . "42") (number . "1") (pages . "2-3"))
field = title
  entry-or-key = ((type . "article") (id . "OrgCitations") (author . #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent (paragraph nil #2 #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #("Journal of Plain Text Formats" 0 29 (:parent #4)) #("." 0 1 (:parent #4)))))) (journal . #("Journal of Plain Text Formats" 0 29 (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #4)) #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #2 #("." 0 1 (:parent #4)))))) (title . #("Elegant Citations with Org-Mode" 0 31 (:parent (italic (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #6)) #(" (" 0 2 (:parent #6)) #("2021" 0 4 (:parent #6)) #("). " 0 3 (:parent #6)) #4 #(", " 0 2 (:parent #6)) #("Journal of Plain Text Formats" 0 29 (:parent #6)) #("." 0 1 (:parent #6)))) #2)))) (year . "2021") (month . "7") (volume . "42") (number . "1") (pages . "2-3"))
field = publisher
  entry-or-key = ((type . "article") (id . "OrgCitations") (author . #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent (paragraph nil #2 #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #("Journal of Plain Text Formats" 0 29 (:parent #4)) #("." 0 1 (:parent #4)))))) (journal . #("Journal of Plain Text Formats" 0 29 (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #4)) #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #2 #("." 0 1 (:parent #4)))))) (title . #("Elegant Citations with Org-Mode" 0 31 (:parent (italic (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #6)) #(" (" 0 2 (:parent #6)) #("2021" 0 4 (:parent #6)) #("). " 0 3 (:parent #6)) #4 #(", " 0 2 (:parent #6)) #("Journal of Plain Text Formats" 0 29 (:parent #6)) #("." 0 1 (:parent #6)))) #2)))) (year . "2021") (month . "7") (volume . "42") (number . "1") (pages . "2-3"))
field = journal
  entry-or-key = ((type . "article") (id . "OrgCitations") (author . #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent (paragraph nil #2 #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #("Journal of Plain Text Formats" 0 29 (:parent #4)) #("." 0 1 (:parent #4)))))) (journal . #("Journal of Plain Text Formats" 0 29 (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #4)) #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #2 #("." 0 1 (:parent #4)))))) (title . #("Elegant Citations with Org-Mode" 0 31 (:parent (italic (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #6)) #(" (" 0 2 (:parent #6)) #("2021" 0 4 (:parent #6)) #("). " 0 3 (:parent #6)) #4 #(", " 0 2 (:parent #6)) #("Journal of Plain Text Formats" 0 29 (:parent #6)) #("." 0 1 (:parent #6)))) #2)))) (year . "2021") (month . "7") (volume . "42") (number . "1") (pages . "2-3"))
field = author
  entry-or-key = ((type . "article") (id . "OrgCitations") (author . #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent (paragraph nil #2 #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #("Journal of Plain Text Formats" 0 29 (:parent #4)) #("." 0 1 (:parent #4)))))) (journal . #("Journal of Plain Text Formats" 0 29 (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #4)) #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #2 #("." 0 1 (:parent #4)))))) (title . #("Elegant Citations with Org-Mode" 0 31 (:parent (italic (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #6)) #(" (" 0 2 (:parent #6)) #("2021" 0 4 (:parent #6)) #("). " 0 3 (:parent #6)) #4 #(", " 0 2 (:parent #6)) #("Journal of Plain Text Formats" 0 29 (:parent #6)) #("." 0 1 (:parent #6)))) #2)))) (year . "2021") (month . "7") (volume . "42") (number . "1") (pages . "2-3"))
field = year
  entry-or-key = ((type . "article") (id . "OrgCitations") (author . #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent (paragraph nil #2 #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #("Journal of Plain Text Formats" 0 29 (:parent #4)) #("." 0 1 (:parent #4)))))) (journal . #("Journal of Plain Text Formats" 0 29 (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #4)) #(" (" 0 2 (:parent #4)) #("2021" 0 4 (:parent #4)) #("). " 0 3 (:parent #4)) (italic (:parent #4) #("Elegant Citations with Org-Mode" 0 31 (:parent #5))) #(", " 0 2 (:parent #4)) #2 #("." 0 1 (:parent #4)))))) (title . #("Elegant Citations with Org-Mode" 0 31 (:parent (italic (:parent (paragraph nil #("org, mode and Syntax, Citation and List, Mailing and Effort, Time" 0 65 (:parent #6)) #(" (" 0 2 (:parent #6)) #("2021" 0 4 (:parent #6)) #("). " 0 3 (:parent #6)) #4 #(", " 0 2 (:parent #6)) #("Journal of Plain Text Formats" 0 29 (:parent #6)) #("." 0 1 (:parent #6)))) #2)))) (year . "2021") (month . "7") (volume . "42") (number . "1") (pages . "2-3"))
Wrote /home/kmodi/stow/pub_dotfiles/emacs/dot-emacs.d/elisp/ox-hugo/test/site/content/posts/org-cite-basic-example.md

On master (emacs 29.x) branch

Error

Output in *Messages* buffer:

[ox-hugo] Exporting ‘Org Cite Basic Example’ ..
org-babel-exp process org at position 199572...
org-babel-exp process org at position 199841...
field = author
  entry-or-key = "OrgCitations"
field = editor
  entry-or-key = "OrgCitations"
field = author
  entry-or-key = "OrgCitations"
field = editor
  entry-or-key = "OrgCitations"
field = year
  entry-or-key = "OrgCitations"
field = date
  entry-or-key = "OrgCitations"
field = author
  entry-or-key = nil
let: Wrong value for ENTRY-OR-KEY: nil

[kaushalmodi]

The regression was caused in bibtex.el on emacs master in https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=c32e8b33f4fdd17856e5f7ae8e7e7c6d3b473342, and it's now fixed in https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d221c02fa1db17e1275687f0bbce4ff1499119a1.