[BUG] "Invalid search bound (wrong side of point)" [9.8-pre (release_9.7.16-169-ge87ecf @ ~/.emacs.d/org-mode-git/lisp/)]

[BUG] "Invalid search bound (wrong side of point)" [9.8-pre (release_9.7.16-169-ge87ecf @ ~/.emacs.d/org-mode-git/lisp/)]

[Paul Stansell]

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Hello,

Occasionally, when I start emacs from the command line, I get this bug, but
it's intermittent,
so I have ignored it until now.

All I can report is that I opened an org file named scratch.org and
received the following error message:

  Warning (org-element): org-element--cache: Org parser error in
scratch.org::8756. Resetting.
   The error was: (error "Invalid search bound (wrong side of point)")
   Backtrace:
  nil
   Please report this to Org mode mailing list (M-x org-submit-bug-report).

Then I closed the buggy emacs window and tried again and it was fine.

Paul
------------------------------------------------------------------------

Emacs  : GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.33, cairo version 1.16.0)
 of 2024-09-17, modified by Debian
Package: Org mode version 9.8-pre (release_9.7.16-169-ge87ecf @
~/.emacs.d/org-mode-git/lisp/)

current state:
==============
(setq
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
org-src-mode-configure-edit-buffer)
 org-link-shell-confirm-function 'yes-or-no-p
 org-sort-function 'string-collate-lessp
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-persist-before-write-hook '(org-element--cache-persist-before-write)
 org-startup-folded t
 org-id-link-to-org-use-id t
 org-mode-hook '(#[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-fold-show-all
append local] 5]
                 #[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook
org-babel-show-result-all append local]
                   5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-clock-persist 'history
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-persist-before-read-hook '(org-element--cache-persist-before-read)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-clock-history-length 28
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-persist-after-read-hook '(org-element--cache-persist-after-read)
 org-bibtex-headline-format-function 'org-bibtex-headline-format-default
 org-adapt-indentation t
 org-babel-pre-tangle-hook '(save-buffer)
 org-file-apps '((auto-mode . emacs) ("\\.odt\\'" . "libreoffice %s")
                 ("\\.docx\\'" . "libreoffice %s") ("\\.xlsx\\'" .
"libreoffice %s")
                 ("\\.png\\'" . "xv %s") ("\\.jpg\\'" . "xv %s")
("\\.jpeg\\'" . "xv %s")
                 ("\\.webp\\'" . "xv %s") ("\\.pdf\\'" . "okular \"%s\"")
                 ("\\.xoj" . "xournal %s") ("\\.xopp" . "xournalpp %s"))
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe
org-babel-header-arg-expand)
 org-hide-leading-stars t
 org-babel-load-languages '((R . t) (emacs-lisp . t) (gnuplot . t) (octave
. t) (python . t)
                            (fortran . t) (sql . t) (ditaa . t) (dot . t)
(shell . t))
 org-log-done 'time
 org-highlight-latex-and-related '(latex)
 org-cycle-tab-first-hook '(org-babel-hide-result-toggle-maybe
org-babel-header-arg-expand)
 org-agenda-loop-over-headlines-in-active-region nil
 org-fontify-done-headline nil
 org-fold-core-isearch-open-function 'org-fold-core--isearch-reveal
 org-occur-hook '(org-first-headline-recenter)
 org-log-into-drawer t
 org--warnings '("org-element--cache: Org parser error in scratch.org::8756.
Resetting.\n The error was: (error \"Invalid search bound (wrong side of
point)\")\n Backtrace:\nnil\n Please report this to Org mode mailing list
(M-x org-submit-bug-report).")
 org-cycle-hook '(org-cycle-hide-archived-subtrees
org-cycle-show-empty-lines
                  org-cycle-optimize-window-after-visibility-change
                  org-cycle-display-link-previews)
 org-todo-keywords '((sequence "TODO(t!)" "MAYBE(m!)" "STARTED(s!)"
"WAITING(w@/!)" "|"
                      "DONE(d)" "INFO(i!)" "CANCELLED(c@)" "UNFINISHED(u@)"
"ABANDONED(a@)")
                     )
 org-speed-command-hook '(org-speed-command-activate
org-babel-speed-command-activate)
 org-yank-image-file-name-function 'org-yank-image-autogen-filename
 org-fold-catch-invisible-edits 'error
 org-babel-tangle-lang-exts '(("fortran" . "F90") ("python" . "py")
("emacs-lisp" . "el")
                              ("elisp" . "el"))
 org-format-latex-options '(:foreground "Yellow" :background default :scale
1.2
                            :html-foreground "Black" :html-background
"Transparent"
                            :html-scale 1.07 :matchers ("begin" "$1" "$"
"$$" "\\(" "\\["))
 org-clock-display-default-range 'untilnow
 org-export-before-parsing-hook '(org-attach-expand-links)
 org-confirm-shell-link-function 'yes-or-no-p
 org-link-parameters '(("attachment" :follow org-attach-follow :complete
                        org-attach-complete-link :preview
org-attach-preview-file)
                       ("eww" :follow org-eww-open :store
org-eww-store-link)
                       ("rmail" :follow org-rmail-open :store
org-rmail-store-link)
                       ("mhe" :follow org-mhe-open :store
org-mhe-store-link)
                       ("irc" :follow org-irc-visit :store
org-irc-store-link :export
                        org-irc-export)
                       ("info" :follow org-info-open :export
org-info-export :store
                        org-info-store-link :insert-description
                        org-info-description-as-command)
                       ("gnus" :follow org-gnus-open :store
org-gnus-store-link)
                       ("docview" :follow org-docview-open :export
org-docview-export :store
                        org-docview-store-link)
                       ("bibtex" :follow org-bibtex-open :store
org-bibtex-store-link)
                       ("bbdb" :follow org-bbdb-open :export
org-bbdb-export :complete
                        org-bbdb-complete-link :store org-bbdb-store-link)
                       ("w3m" :store org-w3m-store-link)
                       ("doi" :follow org-link-doi-open :export
org-link-doi-export)
                       ("id" :follow org-id-open :store
org-id-store-link-maybe)
                       ("file+sys") ("file+emacs") ("shell" :follow
org-link--open-shell)
                       ("news" :follow
                        #[514 "\301\300\302 Q \"\207" ["news" browse-url
":"] 6
                          "\n\n(fn URL ARG)"]
                        )
                       ("mailto" :follow
                        #[514 "\301\300\302 Q \"\207" ["mailto" browse-url
":"] 6
                          "\n\n(fn URL ARG)"]
                        )
                       ("https" :follow
                        #[514 "\301\300\302 Q \"\207" ["https" browse-url
":"] 6
                          "\n\n(fn URL ARG)"]
                        )
                       ("http" :follow
                        #[514 "\301\300\302 Q \"\207" ["http" browse-url
":"] 6
                          "\n\n(fn URL ARG)"]
                        )
                       ("ftp" :follow
                        #[514 "\301\300\302 Q \"\207" ["ftp" browse-url
":"] 6
                          "\n\n(fn URL ARG)"]
                        )
                       ("help" :follow org-link--open-help :store
org-link--store-help)
                       ("file" :complete org-link-complete-file :preview
                        org-link-preview-file)
                       ("elisp" :follow org-link--open-elisp))
 org-link-elisp-confirm-function 'yes-or-no-p
 org-todo-keyword-faces '(("TODO" :foreground "light pink" :weight bold)
                          ("MAYBE" :foreground "light pink" :weight bold)
                          ("STARTED" :foreground "gold" :weight bold)
                          ("DONE" :foreground "light green" :weight bold)
                          ("WAITING" :foreground "gold" :weight bold)
                          ("CANCELLED" :foreground "light green" :weight
bold)
                          ("UNFINISHED" :foreground "light green" :weight
bold)
                          ("ABANDONED" :foreground "light green" :weight
bold))
 org-clock-into-drawer "CLOCK"
 org-clock-in-switch-to-state "STARTED"
 org-clock-out-remove-zero-time-clocks t
 org-confirm-babel-evaluate nil
 )

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Re: [BUG] "Invalid search bound (wrong side of point)" [9.8-pre (release_9.7.16-169-ge87ecf @ ~/.emacs.d/org-mode-git/lisp/)]

[Ihor Radchenko]

Paul Stansell <paulstansell@gmail.com> writes:

> Occasionally, when I start emacs from the command line, I get this bug, but
> it's intermittent,
> so I have ignored it until now.
>
> All I can report is that I opened an org file named scratch.org and
> received the following error message:
>
>   Warning (org-element): org-element--cache: Org parser error in
> scratch.org::8756. Resetting.
>    The error was: (error "Invalid search bound (wrong side of point)")
>    Backtrace:
>   nil
>    Please report this to Org mode mailing list (M-x org-submit-bug-report).

Thanks for reporting!
May you add
(setq org-element--cache-self-verify 'backtrace)
to your config?

This will enable extra logging that will provide more context about the error.

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

Re: [BUG] "Invalid search bound (wrong side of point)" [9.8-pre (release_9.7.16-169-ge87ecf @ ~/.emacs.d/org-mode-git/lisp/)]

[Paul Stansell]

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Hello Ihor,

May you add
> (setq org-element--cache-self-verify 'backtrace)
> to your config?


Sure, I'll do that.

In case it's relevant, I also frequently get warnings like the following:

Warning (emacs): Emacs reader failed to read data in
"~/.cache/org-persist//gc-lock.eld". The error was: "End of file during
parsing"

Paul

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Re: [BUG] "Invalid search bound (wrong side of point)" [9.8-pre (release_9.7.16-169-ge87ecf @ ~/.emacs.d/org-mode-git/lisp/)]

[Ihor Radchenko]

Paul Stansell <paulstansell@gmail.com> writes:

> In case it's relevant, I also frequently get warnings like the following:
>
> Warning (emacs): Emacs reader failed to read data in
> "~/.cache/org-persist//gc-lock.eld". The error was: "End of file during
> parsing"

May it be that you often have multiple Emacs processes running
simultaneously and killed by signal?

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

Re: [BUG] "Invalid search bound (wrong side of point)" [9.8-pre (release_9.7.16-169-ge87ecf @ ~/.emacs.d/org-mode-git/lisp/)]

[Paul Stansell]

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>
> May it be that you often have multiple Emacs processes running
> simultaneously and killed by signal?
>

I do typically have multiple Emacs processes running simultaneously, but
I'm not aware that I kill Emacs processes, I either quit Emacs with C-x
C-c, or I click on the "X" in the top right of the window.  Could the
latter be sending a kill signal?  By the way, I've exited Emacs by clicking
the "X" for years, but I've only recently noticed the warnings.  Also, if I
switch to using the version of Org Mode that comes with the distribution
(Kubuntu 22.04), instead of using the recent one from a git clone, I don't
think I get the warmings.

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Re: [BUG] "Invalid search bound (wrong side of point)" [9.8-pre (release_9.7.16-169-ge87ecf @ ~/.emacs.d/org-mode-git/lisp/)]

[Ihor Radchenko]

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Paul Stansell <paulstansell@gmail.com> writes:

>>
>> May it be that you often have multiple Emacs processes running
>> simultaneously and killed by signal?
>
> I do typically have multiple Emacs processes running simultaneously, but
> I'm not aware that I kill Emacs processes, I either quit Emacs with C-x
> C-c, or I click on the "X" in the top right of the window.  Could the
> latter be sending a kill signal?

No idea :)
In any case, your errors look like some kind of mixed state from
multiple Emacs sessions writing to the same cache file.
May you try the attached patch?

> ... By the way, I've exited Emacs by clicking
> the "X" for years, but I've only recently noticed the warnings.  Also, if I
> switch to using the version of Org Mode that comes with the distribution
> (Kubuntu 22.04), instead of using the recent one from a git clone, I don't
> think I get the warmings.

That's because disk cache has been introduced in the recent Org mode
versions.

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>



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From 15b8681c0c8db555b20d70b2a47cef996ff1cebf Mon Sep 17 00:00:00 2001
Message-ID: <15b8681c0c8db555b20d70b2a47cef996ff1cebf.1735030672.git.yantar92@posteo.net>
From: Ihor Radchenko <yantar92@posteo.net>
Date: Tue, 24 Dec 2024 09:45:42 +0100
Subject: [PATCH] org-persist: Fix mixing cace data from multiple Emacs
 processes

* lisp/org-persist.el (org-persist--write-elisp-file): When there is a
clash with other Emacs process while writing cache data, discard the
cache to avoid any problem.
(org-persist-write): Return nil when any kind of error occurs when
writing.
(org-persist--refresh-gc-lock):
(org-persist--gc-orphan-p): Bail out when writing fails.

Reported-by: Paul Stansell <paulstansell@gmail.com>
Link: https://orgmode.org/list/YT3PR01MB95943D4DB2E659091A2BDE8DBE2E2@YT3PR01MB9594.CANPRD01.PROD.OUTLOOK.COM
---
 lisp/org-persist.el | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/lisp/org-persist.el b/lisp/org-persist.el
index 886d227c0a..788714fb15 100644
--- a/lisp/org-persist.el
+++ b/lisp/org-persist.el
@@ -478,11 +478,12 @@ (defun org-persist--write-elisp-file (file data &optional no-circular pp)
         (start-time (float-time)))
     (unless (file-exists-p (file-name-directory file))
       (make-directory (file-name-directory file) t))
-    ;; Force writing even when the file happens to be opened by
-    ;; another Emacs process.
+    ;; Discard cache when there is a clash with other Emacs process.
+    ;; This way, we make sure that cache is never mixing data & record
+    ;; from different processes.
     (cl-letf (((symbol-function #'ask-user-about-lock)
-               ;; FIXME: Emacs 27 does not yet have `always'.
-               (lambda (&rest _) t)))
+               (lambda (&rest _)
+                 (error "Other Emacs process is writing to cache"))))
       (with-temp-file file
         (insert ";;   -*- mode: lisp-data; -*-\n")
         (if pp
@@ -1120,12 +1121,13 @@ (defun org-persist-write (container &optional associated ignore-return)
              (seq-find (lambda (v)
                          (run-hook-with-args-until-success 'org-persist-before-write-hook v associated))
                        (plist-get collection :container)))
-      (when (or (file-exists-p org-persist-directory) (org-persist--save-index))
-        (let ((file (org-file-name-concat org-persist-directory (plist-get collection :persist-file)))
-              (data (mapcar (lambda (c) (cons c (org-persist-write:generic c collection)))
-                            (plist-get collection :container))))
-          (org-persist--write-elisp-file file data)
-          (or ignore-return (org-persist-read container associated)))))))
+      (ignore-errors
+        (when (or (file-exists-p org-persist-directory) (org-persist--save-index))
+          (let ((file (org-file-name-concat org-persist-directory (plist-get collection :persist-file)))
+                (data (mapcar (lambda (c) (cons c (org-persist-write:generic c collection)))
+                              (plist-get collection :container))))
+            (org-persist--write-elisp-file file data)
+            (or ignore-return (org-persist-read container associated))))))))
 
 (defun org-persist-write-all (&optional associated)
   "Save all the persistent data.
@@ -1226,7 +1228,7 @@ (defun org-persist--refresh-gc-lock ()
       (when (< (- (float-time (cdr record)) (float-time (current-time)))
                org-persist-gc-lock-expiry)
         (push record new-alist)))
-    (org-persist--write-elisp-file file new-alist)))
+    (ignore-errors (org-persist--write-elisp-file file new-alist))))
 
 (defun org-persist--gc-orphan-p ()
   "Return non-nil, when orphan files should be garbage-collected.
@@ -1234,7 +1236,7 @@ (defun org-persist--gc-orphan-p ()
   (let* ((file (org-file-name-concat org-persist-directory org-persist-gc-lock-file))
          (alist (when (file-exists-p file) (org-persist--read-elisp-file file))))
     (setq alist (org-assoc-delete-all before-init-time alist))
-    (org-persist--write-elisp-file file alist)
+    (ignore-errors (org-persist--write-elisp-file file alist))
     ;; Only GC orphan files when there are no active sessions.
     (not alist)))
 
-- 
2.47.1