all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Ihor Radchenko <yantar92@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Lars Ingebrigtsen <larsi@gnus.org>,
	57804@debbugs.gnu.org, pogonyshev@gmail.com
Subject: bug#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely
Date: Thu, 15 Sep 2022 10:17:21 +0800	[thread overview]
Message-ID: <87edwdwfda.fsf@localhost> (raw)
In-Reply-To: <83o7vh26e5.fsf@gnu.org>

Eli Zaretskii <eliz@gnu.org> writes:

>> But like I said, three `C-g's without any idle time in between would be
>> the magical command to switch off font locking.  I think that's hard to
>> do accidentally in normal circumstances.
>
> There's nothing accidental about my typing several C-g in a row.  It
> just isn't related to any font-lock.

Org mode uses a similar method to catch rare edge cases and make users
report them. We make the user aware about possible reaction to multiple
C-g's using the following message:

`org-element--parse-buffer': Suppressed `\\[keyboard-quit]'. Press
`\\[keyboard-quit]' %d more times to force interruption.

The code goes like

(when (and inhibit-quit org-element--cache-interrupt-C-g quit-flag)
               (when quit-flag
	         (cl-incf org-element--cache-interrupt-C-g-count)
                 (setq quit-flag nil))
               (when (>= org-element--cache-interrupt-C-g-count
                        org-element--cache-interrupt-C-g-max-count)
                 (setq quit-flag t)
                 (setq org-element--cache-interrupt-C-g-count 0)
                 (org-element-cache-reset)
                 (error "org-element: Parsing aborted by user.  Cache has been cleared.
If you observe Emacs hangs frequently, please report this to Org mode mailing list (M-x org-submit-bug-report)."))
               (message (substitute-command-keys
                         "`org-element--parse-buffer': Suppressed `\\[keyboard-quit]'.  Press `\\[keyboard-quit]' %d more times to force interruption.")
                        (- org-element--cache-interrupt-C-g-max-count
                           org-element--cache-interrupt-C-g-count)))

-- 
Ihor Radchenko,
Org mode contributor,
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





  reply	other threads:[~2022-09-15  2:17 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-14 15:05 bug#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely Paul Pogonyshev
2022-09-14 16:00 ` dick
2022-09-14 16:06   ` Paul Pogonyshev
2022-09-14 16:14 ` dick
2022-09-14 17:52   ` Lars Ingebrigtsen
2022-09-14 18:18     ` Eli Zaretskii
2022-09-14 16:41 ` Lars Ingebrigtsen
2022-09-14 16:57   ` Paul Pogonyshev
2022-09-14 17:25     ` Lars Ingebrigtsen
2022-09-14 17:30       ` Paul Pogonyshev
2022-09-14 17:43       ` Eli Zaretskii
2022-09-14 17:45         ` Lars Ingebrigtsen
2022-09-14 17:49           ` Eli Zaretskii
2022-09-15  2:17             ` Ihor Radchenko [this message]
2022-09-14 17:34     ` Gregory Heytings
2022-09-15 14:47       ` Paul Pogonyshev
2022-09-15 15:10         ` Gregory Heytings
2022-09-15 15:37           ` Paul Pogonyshev
2022-09-15 16:08             ` Gregory Heytings
2022-09-15 16:19               ` Paul Pogonyshev
2022-09-15 16:44                 ` Gregory Heytings
2022-09-15 18:49                   ` Paul Pogonyshev
2022-09-15 19:16                     ` Eli Zaretskii
2022-09-15 19:36                       ` Paul Pogonyshev
2022-09-15 19:45                         ` Eli Zaretskii
2022-09-15 20:18                         ` Gregory Heytings
2022-09-15 20:22                           ` Lars Ingebrigtsen
2022-09-15 20:40                           ` Paul Pogonyshev
2022-09-15 20:44                             ` Gregory Heytings
2022-09-15 21:17                               ` Paul Pogonyshev
2022-09-15 21:32                                 ` Gregory Heytings
2022-09-15 21:49                                   ` Paul Pogonyshev
2022-09-15 22:16                                     ` Gregory Heytings
2022-09-15 22:53                                       ` Paul Pogonyshev
2022-09-15 23:13                                         ` Gregory Heytings
2022-09-16  6:40                                         ` Eli Zaretskii
2022-09-16 10:08                                           ` Paul Pogonyshev
2022-09-16 10:44                                             ` Eli Zaretskii
2022-09-16  6:31                             ` Eli Zaretskii
     [not found]                               ` <1260fd38-d4b3-5ca1-5b15-78f59c0255b6@yandex.ru>
     [not found]                                 ` <83o7t9k8fr.fsf@gnu.org>
     [not found]                                   ` <CAG7Bpaow570a8Qrq6VxU+=MNF55UmnCMFFXT2Eg=vQUTgrxeoQ@mail.gmail.com>
     [not found]                                     ` <34e17bf2a6bdd269fba7@heytings.org>
     [not found]                                       ` <CAG7BpapFE0HEwi8iUoStz9EyAwH-QdZ_CxOUNtdUeKDmzCrZaQ@mail.gmail.com>
     [not found]                                         ` <338f50d421074805735f@heytings.org>
     [not found]                                           ` <831qpnngeg.fsf@gnu.org>
     [not found]                                             ` <338f50d421b672315145@heytings.org>
2022-11-28 18:32                                               ` Eli Zaretskii
2022-09-16  1:17                           ` Ihor Radchenko
2022-09-16  5:35                           ` Eli Zaretskii
2022-09-15 19:44                     ` Gregory Heytings
2022-09-15 20:07                       ` Paul Pogonyshev
2022-09-15 20:26                         ` Gregory Heytings
2022-09-16  5:37                           ` Eli Zaretskii
2022-09-15 22:20                       ` dick
2022-09-15 22:38                         ` Gregory Heytings
2022-09-16  6:19                         ` Eli Zaretskii
2022-09-16  7:44                         ` Gerd Möllmann
2022-09-14 17:02 ` Eli Zaretskii
2022-09-14 17:25   ` Paul Pogonyshev
2022-09-14 17:32     ` Eli Zaretskii
2022-09-14 17:38   ` Lars Ingebrigtsen
2022-09-14 17:44     ` Eli Zaretskii
2022-09-14 17:46       ` Lars Ingebrigtsen
2022-09-14 17:51         ` Eli Zaretskii
2022-09-15  5:20     ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-09-15  6:27       ` Eli Zaretskii

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87edwdwfda.fsf@localhost \
    --to=yantar92@gmail.com \
    --cc=57804@debbugs.gnu.org \
    --cc=eliz@gnu.org \
    --cc=larsi@gnus.org \
    --cc=pogonyshev@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.