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[debbugs-tracker] bug#22715: closed (25.0.91; Point randomly jumps durin

From: GNU bug Tracking System
Subject: [debbugs-tracker] bug#22715: closed (25.0.91; Point randomly jumps during key entry)
Date: Wed, 24 Feb 2016 01:48:02 +0000

Your message dated Tue, 23 Feb 2016 20:47:03 -0500
with message-id <address@hidden>
and subject line Re: bug#22715: 25.0.91; Point randomly jumps during key entry
has caused the debbugs.gnu.org bug report #22715,
regarding 25.0.91; Point randomly jumps during key entry
to be marked as done.

(If you believe you have received this mail in error, please contact

22715: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22715
GNU Bug Tracking System
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--- Begin Message --- Subject: 25.0.91; Point randomly jumps during key entry Date: Tue, 16 Feb 2016 20:39:49 -0500 User-agent: Mutt/1.5.21 (2010-09-15)
First, please accept my apologies for the poor bug report.  I'm calling
it a poor bug report because I've been unable to find a simple recipe
that easily reproduces the behavior I'm seeing.

The behavior itself is easy to describe: while providing keyboard input,
sometimes point jumps to a (seemingly) random place in the buffer.

Some examples

 - while holding the UP arrow to slowly scroll upwards in the current
   buffer, point suddenly `jumps' up, over several screenfuls of text

 - while typing (ordinary alphanumeric text), point jumps to a line
   near the top of the file.  I've noticed this most often when using
   emacs to write java code.  I'll be typing away in the body of a
   method, and point will jump to a position in the file header
   comment, several hundred lines earlier.

This doesn't happen very often.  Perhaps 3--4 times during a work day.
I have not found a way to make it happen on demand.

I've experienced this behavior in 25.0.90 and 25.0.91, but not in
earlier versions.

I typically see this behavior in java-mode and org-mode.  That said, the
vast majority of my emacs usage involves java-mode and org-mode.

I've seen this behavior on two different x86_64 GNU/Linux systems.
One system runs Redhat 6.4, and the other runs OpenSUSE 13.2.  Both
systems have `standard' USB keyboards, and optical mice.

If I'm able to find a nice set of steps to reproduce, I'll add them to
this bug report.

If there are suggestions for gathering/providing more information,
please let me know, and I'll gladly try them.

In GNU Emacs (x86_64-unknown-linux-gnu, GTK+ Version 3.14.15)
 of 2016-02-16 built on sunny
Windowing system distributor 'The X.Org Foundation', version 11.0.11601000
System Description:     openSUSE 13.2 (Harlequin) (x86_64)

Configured using:
 'configure --prefix=/usr/local/emacs-25.0.91'

Configured features:

Important settings:
  value of $LC_COLLATE: C
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
None found.

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Memory information:
((conses 16 87179 5415)
 (symbols 48 19682 0)
 (miscs 40 38 110)
 (strings 32 14733 4487)
 (string-bytes 1 422301)
 (vectors 16 12267)
 (vector-slots 8 425290 4370)
 (floats 8 166 37)
 (intervals 56 198 0)
 (buffers 976 11)
 (heap 1024 44093 1008))

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--- End Message ---
--- Begin Message --- Subject: Re: bug#22715: 25.0.91; Point randomly jumps during key entry Date: Tue, 23 Feb 2016 20:47:03 -0500 User-agent: Mutt/1.5.21 (2010-09-15)
After applying

  commit aa5a7948431437fc09931ac21eb05f365e1f8876
  commit 2d8b2fd034ccc61f949b408373342b5f9f8ba592

to the emacs-25.0.91 pretest, the `point-jumping' no longer occurs.

Thanks again for your help!


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