bug#55036: 29.0.50; bibtex-map-entries enters infinite loop on malformed bibtex file

bug#55036: 29.0.50; bibtex-map-entries enters infinite loop on malformed bibtex file

[Ihor Radchenko]

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bibtex-map-entries sometimes can enter inifinite loop.

I did the following:
1. Open the attached .bib file
2. M-: (bibtex-map-entries #'ignore) <RET>
3. Emacs hangs until I press C-g

Expected behaviour: invalid bibtex entries are ignored or an error is
thrown

Best,
Ihor


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@misc {medlineplus_2022, title={Munchausen syndrome by proxy: Medlineplus medical encyclopedia}, url={https://medlineplus.gov/ency/article/001555.htm#:~:text=Munchausen%20syndrome%20by%20proxy%20is,like%20the%20child%20is%20sick.}, journal={MedlinePlus}, publisher={U.S. National Library of Medicine}, author={medlineplus}, year={2022}, month={Apr}}
@misc{apache _2022, title={The Number One HTTP Server On The Internet¶}, url={https://httpd.apache.org/}, journal={Welcome! - The Apache HTTP Server Project}, author={Apache }, year={2022}}


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In GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, cairo version 1.16.0)
 of 2022-04-17 built on localhost
Repository revision: e1137098277ca1dca8235d9146ef2c6d23d7417e
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101003
System Description: Gentoo Linux

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/home/yantar92/.emacs.d/straight/build/org/org-loaddefs hides /usr/share/emacs/29.0.50/lisp/org/org-loaddefs
/home/yantar92/.emacs.d/straight/build/let-alist/let-alist hides /usr/share/emacs/29.0.50/lisp/emacs-lisp/let-alist
/home/yantar92/.emacs.d/straight/build/map/map hides /usr/share/emacs/29.0.50/lisp/emacs-lisp/map

Features:
(shadow sort footnote emacsbug helm-command helm-elisp helm-eval
cus-start mule-util jka-compr boon-moves er-basic-expansions
expand-region-core expand-region-custom misearch multi-isearch boon-main
boon-hl boon-arguments multiple-cursors mc-separate-operations
rectangular-region-mode mc-mark-pop mc-edit-lines
mc-hide-unmatched-lines-mode mc-mark-more mc-cycle-cursors
multiple-cursors-core boon-regs boon-utils latex latex-flymake
tex-ispell tex-style tex org-duration cal-iso vc ffap
org-table-sticky-header oc-basic highlight-indentation flymake-proc
flymake elpy elpy-rpc pyvenv eshell esh-cmd esh-ext esh-opt esh-proc
esh-io esh-arg esh-module esh-groups esh-util elpy-shell elpy-profile
elpy-django elpy-refactor grep scimax-jupyter ob-jupyter jupyter-tramp
tramp-cache jupyter-server jupyter-server-ioloop jupyter-ioloop-comm
jupyter-ioloop zmq zmq-core jupyter-rest-api jupyter-org-extensions
jupyter-org-client tramp-archive tramp-gvfs helm-x-files helm-for-files
helm-bookmark helm-info helm-external helm-net git-email-notmuch
git-email-piem git-email git-email-autoloads project-autoloads
xref-autoloads piem-notmuch piem piem-maildir mail-extr piem-autoloads
org-crypt helm-notmuch helm-notmuch-autoloads ol-notmuch org-eldoc
org-table-sticky-header-autoloads posframe posframe-autoloads ob-async
ob-async-autoloads ob-latex ob-dot ob-calc calc-store calc-trail
ob-gnuplot ob-ditaa ob-C cc-mode cc-fonts cc-guess cc-menus cc-cmds
cc-styles cc-align cc-engine cc-vars cc-defs ob-python python ob-perl
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ox-beamer ox-extra orgdiff orgdiff-autoloads doct ya-org-capture
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org-capture-pop-frame-autoloads org-protocol org-analyzer-autoloads
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helm-org-ql-autoloads helm-org-autoloads org-ql-search org-ql-view ov
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plz-autoloads notmuch-calendar-x notmuch-calendar-x-autoloads notmuch
notmuch-tree notmuch-jump notmuch-hello notmuch-show notmuch-print
notmuch-crypto notmuch-mua notmuch-message notmuch-draft
notmuch-maildir-fcc notmuch-address notmuch-company notmuch-parser
notmuch-wash coolj notmuch-query goto-addr icalendar diary-lib
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mm-view mml-smime smime dig w3m-autoloads elfeed-score
elfeed-score-maint elfeed-score-scoring elfeed-score-serde
elfeed-score-rule-stats elfeed-org elfeed-org-autoloads quick-peek
quick-peek-autoloads elfeed-show elfeed-search hideshow
display-fill-column-indicator eros flycheck-tip error-tip notifications
dbus flycheck-tip-autoloads flycheck rainbow-delimiters
highlight-numbers parent-mode easy-escape license-snippets
yasnippet-snippets-autoloads yasnippet-snippets yasnippet elfeed-csv
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vterm-autoloads diffpdf diffpdf-autoloads pdf-view-restore-autoloads
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pretty-hydra pretty-hydra-autoloads jupyter jupyter-repl
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bindat simple-httpd jupyter-kernelspec jupyter-env jupyter-client
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ebuild-mode skeleton sh-script smie executable ebuild-mode-autoloads
lua-mode lua-mode-autoloads gnuplot-autoloads elisp-def ert ewoc
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paredit paredit-autoloads company-jedi company-jedi-autoloads jedi
jedi-core python-environment epc ctable concurrent auto-complete popup
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python-environment-autoloads epc-autoloads ctable-autoloads
concurrent-autoloads elpy-autoloads pyvenv-autoloads
highlight-indentation-autoloads which-key which-key-autoloads
helm-descbinds helm-descbinds-autoloads elisp-demos
elisp-demos-autoloads helpful edebug info-look help-fns radix-tree
elisp-refs helpful-autoloads elisp-refs-autoloads tldr tldr-autoloads
lsp-ui-autoloads lsp-mode-autoloads spinner-autoloads macrostep
macrostep-autoloads font-lock-profiler font-lock-profiler-autoloads
font-lock-studio font-lock-studio-autoloads memory-usage
memory-usage-autoloads bug-hunter bug-hunter-autoloads lorem-ipsum
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yasnippet-autoloads move-text move-text-autoloads aggressive-indent
aggressive-indent-autoloads visual-regexp-autoloads magit-bookmark
bookmark helm-bm helm-bm-autoloads bm bm-autoloads helm-dash dash-docs
helm-dash-autoloads dash-docs-autoloads disk-usage disk-usage-autoloads
dired-git-info-autoloads dired-hide-dotfiles-autoloads
dired-filter-autoloads diredfl diredfl-autoloads
all-the-icons-dired-autoloads dired-async dired-open-autoloads
dired-avfs dired-avfs-autoloads dired-narrow-autoloads dired-hacks-utils
dired-hacks-utils-autoloads dired+ image-file image-converter dired-x
dired-aux dired+-autoloads winner windower emacs-windower-autoloads
goggles pulse skip-buffers-mode avy-autoloads eval-sexp-fu
eval-sexp-fu-autoloads goggles-autoloads easy-escape-autoloads
highlight-numbers-autoloads parent-mode-autoloads
rainbow-delimiters-autoloads highlight-parentheses
highlight-parentheses-autoloads flycheck-autoloads pkg-info-autoloads
epl-autoloads langtool compile langtool-autoloads el-patch-autoloads
el-patch el-patch-stub flyspell ispell hi-lock ediff ediff-merg
ediff-mult ediff-wind ediff-diff ediff-help ediff-init ediff-util
browse-at-remote vc-git vc-dispatcher f browse-at-remote-autoloads
f-autoloads code-review code-review-actions code-review-comment
code-review-section code-review-bitbucket code-review-faces shr
pixel-fill kinsoku url-file url-dired svg xml dom emojify apropos
tar-mode arc-mode archive-mode ht code-review-gitlab code-review-utils
code-review-parse-hunk code-review-github code-review-db uuidgen
calc-misc calc-ext calc calc-loaddefs rect calc-macs a
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forge-core forge-db closql emacsql-sqlite emacsql emacsql-compiler
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magit-stash magit-reflog magit-bisect magit-push magit-pull magit-fetch
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magit-worktree magit-tag magit-merge magit-branch magit-reset
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url-proxy url-privacy url-expand url-methods url-history url-cookie
url-domsuf url-handlers magit-repos magit-apply magit-wip magit-log
which-func imenu magit-diff smerge-mode diff diff-mode git-commit
log-edit message sendmail mailcap yank-media rmc puny rfc822 mml mml-sec
epa derived epg rfc6068 epg-config gnus-util text-property-search
mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 mm-util
ietf-drums mail-prsvr mailabbrev mail-utils gmm-utils mailheader
pcvs-util add-log magit-core magit-autorevert magit-margin
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forge-autoloads yaml-autoloads markdown-mode-autoloads ghub-autoloads
treepy-autoloads let-alist-autoloads closql-autoloads
emacsql-sqlite-autoloads emacsql-autoloads magit-autoloads
magit-section-autoloads git-commit-autoloads with-editor-autoloads
transient-autoloads autorevert recentf tree-widget disp-table hl-todo
pretty-symbols company-oddmuse company-keywords company-etags etags
fileloop generator xref project company-gtags company-dabbrev-code
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persistent-scratch persistent-scratch-autoloads savehist
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helm-misc helm-files image-dired xdg image-mode dired dired-loaddefs
exif filenotify tramp tramp-loaddefs trampver tramp-integration cus-edit
pp cus-load wid-edit files-x tramp-compat shell parse-time iso8601
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pyim-cstring pyim-autoselector pyim-punctuation pyim-candidates
pyim-codes pyim-imobjs pyim-pinyin pyim-pymap pyim-entered pyim-dcache
url-util url-parse auth-source eieio eieio-core eieio-loaddefs
password-cache json map url-vars pyim-outcome pyim-scheme pyim-common
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ob ob-tangle ob-ref ob-lob ob-table ob-exp org-macro org-footnote
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oc org-compat advice org-macs org-loaddefs format-spec find-func
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site-gentoo iso-transl tooltip eldoc paren electric uniquify ediff-hook
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page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
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frame minibuffer nadvice simple cl-generic cham georgian utf-8-lang
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epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button
loaddefs faces cus-face macroexp files window text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind inotify
dynamic-setting font-render-setting cairo x multi-tty
make-network-process native-compile emacs)

Memory information:
((conses 16 5118864 5844976)
 (symbols 48 82341 13)
 (strings 32 657883 1075699)
 (string-bytes 1 21486828)
 (vectors 16 264477)
 (vector-slots 8 4571726 11702570)
 (floats 8 5729 8200)
 (intervals 56 111042 163664)
 (buffers 992 56))

bug#55036: 29.0.50; bibtex-map-entries enters infinite loop on malformed bibtex file

[Lars Ingebrigtsen]

Ihor Radchenko <yantar92@gmail.com> writes:

> bibtex-map-entries sometimes can enter inifinite loop.
>
> I did the following:
> 1. Open the attached .bib file
> 2. M-: (bibtex-map-entries #'ignore) <RET>
> 3. Emacs hangs until I press C-g
>
> Expected behaviour: invalid bibtex entries are ignored or an error is
> thrown

I've now made it ensure forward progress in Emacs 29.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#55036: 29.0.50; bibtex-map-entries enters infinite loop on malformed bibtex file

[Ihor Radchenko]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> I've now made it ensure forward progress in Emacs 29.

Thanks! It was really fast.

Best,
Ihor