GNU bug report logs - #30112
27.0.50; bibtex-mode timer and JIT font lock errors

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Package: emacs; Reported by: "Basil L. Contovounesios" <contovob@HIDDEN>; dated Sun, 14 Jan 2018 15:28:02 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.
Changed bug title to '27.0.50; bibtex-mode timer and JIT font lock errors' from '27.0.50; bibtex-mode timer and redisplay errors' Request was from "Basil L. Contovounesios" <contovob@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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From: Eli Zaretskii <eliz@HIDDEN>
To: "Basil L. Contovounesios" <contovob@HIDDEN>
In-reply-to: <8737388jol.fsf@HIDDEN> (contovob@HIDDEN)
Subject: Re: bug#30112: 27.0.50; bibtex-mode timer and redisplay errors
References: <878td08nqh.fsf@HIDDEN> <831sis1l51.fsf@HIDDEN>
 <8737388jol.fsf@HIDDEN>
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> From: "Basil L. Contovounesios" <contovob@HIDDEN>
> Cc: <30112 <at> debbugs.gnu.org>
> Date: Sun, 14 Jan 2018 16:54:50 +0000
> 
> Is it possible to reword debbugs subject lines?

There's the "retitle" command, see admin/notes/bugtracker for the
details.

Thanks.




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#30112; Package emacs. Full text available.

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From: "Basil L. Contovounesios" <contovob@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#30112: 27.0.50; bibtex-mode timer and redisplay errors
References: <878td08nqh.fsf@HIDDEN> <831sis1l51.fsf@HIDDEN>
Date: Sun, 14 Jan 2018 16:54:50 +0000
In-Reply-To: <831sis1l51.fsf@HIDDEN> (Eli Zaretskii's message of "Sun, 14 Jan
 2018 18:05:14 +0200")
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Eli Zaretskii <eliz@HIDDEN> writes:

> It's not a redisplay error, it's a JIT Font lock error.  Redisplay
> calls JIT lock as part of redisplaying the window, so it catches the
> error and reports it.

Right, sorry - that was a thinko on my part.

Is it possible to reword debbugs subject lines?

-- 
Basil




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#30112; Package emacs. Full text available.

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> From: "Basil L. Contovounesios" <contovob@HIDDEN>
> Date: Sun, 14 Jan 2018 15:27:18 +0000
> 
>   Error during redisplay: (jit-lock-function 1) signaled
>   (args-out-of-range #<buffer *scratch*> 0 1)
> [...]
> 
> Note that step (6) is only needed to trigger the redisplay error

It's not a redisplay error, it's a JIT Font lock error.  Redisplay
calls JIT lock as part of redisplaying the window, so it catches the
error and reports it.




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bug#30112; Package emacs. Full text available.

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From: "Basil L. Contovounesios" <contovob@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 27.0.50; bibtex-mode timer and redisplay errors
Date: Sun, 14 Jan 2018 15:27:18 +0000
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Steps to reproduce:

1. emacs -Q
2. C-x h DEL
3. C-h e
4. M-: (setq bibtex-parse-keys-timeout 4) RET
   [ or some other convenient value ]
5. M-x bibtex-mode RET
6. C-o
   [ this (IMO) incorrectly inserts a large fill-prefix, but that's a
     separate bug ]

After a few seconds of idle time, the following error is logged to
*Messages*:

  Error during redisplay: (jit-lock-function 1) signaled
  (args-out-of-range #<buffer *scratch*> 0 1)

After bibtex-parse-keys-timeout seconds of idle time, another error
appears:

  Error running timer =E2=80=98bibtex-parse-buffers-stealthily=E2=80=99:
  (wrong-type-argument number-or-marker-p nil)

Enabling debug on error does not provide much more context:

  Debugger entered--Lisp error:
      (wrong-type-argument number-or-marker-p nil)
    bibtex-parse-keys(t)
    bibtex-parse-buffers-stealthily()
    apply(bibtex-parse-buffers-stealthily nil)
    timer-event-handler
      ([t 0 4 0 t bibtex-parse-buffers-stealthily nil idle 0])

Note that step (6) is only needed to trigger the redisplay error; the
bibtex parse timer fails even when the buffer is empty.

--=20
Basil

In GNU Emacs 27.0.50 (build 15, x86_64-pc-linux-gnu, X toolkit, Xaw3d scrol=
l bars)
 of 2018-01-11 built on thunk
Repository revision: e911587fb61bbc7f4be41e0a044cb6dee8f9e615
Windowing system distributor 'The X.Org Foundation', version 11.0.11905000
System Description: Debian GNU/Linux testing (buster)

Configured using:
 'configure --config-cache --prefix=3D/home/blc/.local --with-mailutils
 --with-x-toolkit=3Dlucid --with-modules --with-file-notification=3Dyes
 --with-x 'CFLAGS=3D-flto -fomit-frame-pointer -march=3Dnative -maes -mavx
 -mcrc32 -mf16c -mfpmath=3Dsse -mfsgsbase -mfxsr -minline-all-stringops
 -mmmx -mpclmul -mpopcnt -msahf -msse4.2 -mxsave -mxsaveopt -mvzeroupper
 -O3 -pipe' LDFLAGS=3D-flto'

Configured features:
XAW3D XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS LUCID X11 MODULES LIBSYSTEMD JSON LCMS2




Acknowledgement sent to "Basil L. Contovounesios" <contovob@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#30112; Package emacs. Full text available.
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Last modified: Sun, 14 Jan 2018 22:15:02 UTC

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