From: Steve Revilak <steve@srevilak.net>
To: 22715@debbugs.gnu.org
Subject: bug#22715: 25.0.91; Point randomly jumps during key entry
Date: Thu, 18 Feb 2016 21:22:40 -0500 [thread overview]
Message-ID: <20160219022240.GD2572@srevilak.net> (raw)
In-Reply-To: <83r3gbuw2u.fsf@gnu.org>
[-- Attachment #1: Type: text/plain, Size: 2759 bytes --]
Thanks, Eli and Andreas, for your suggestions.
I began by collecting `view-lossage' after several instances of
point-jumping. Here is a representative example:
> [self-insert-command]
SPC [self-insert-command]
a [self-insert-command]
l [self-insert-command]
l [self-insert-command]
R [self-insert-command]
e [self-insert-command]
q [self-insert-command]
u [self-insert-command]
e [self-insert-command]
s [self-insert-command] <<< HERE
t [self-insert-command]
I [self-insert-command]
M-x [execute-extended-command]
v [self-insert-command]
i [self-insert-command]
e [self-insert-command]
w [self-insert-command]
- [self-insert-command]
l [self-insert-command]
o [self-insert-command]
<tab> [minibuffer-complete]
<return> [minibuffer-complete-and-exit]
I'd been typing on line 494 of a .java file. The characters "stI"
ended up on line 464. I don't see any unexpected characters in
view-lossage; the characters that appear are those I actually typed.
Next, I tried to reproduce this behavior in a "almost emacs -Q"
configuration, which was
emacs -q --no-site-file --no-site-lisp --no-splash
and the smallest ~/.emacs I could get away with. I was not able to
reproduce the point-jumping behavior in this configuration.
Looking through the emacs-devel archives, I came across
https://lists.gnu.org/archive/html/emacs-devel/2015-11/msg01687.html
which describes behavior nearly identical to what I've observed.
A later post suggests a patch
https://lists.gnu.org/archive/html/emacs-devel/2016-01/msg00029.html
and another suggests that point-jumping might be related to timers
https://lists.gnu.org/archive/html/emacs-devel/2015-11/msg02127.html
As an experiment, I went back to my "normal emacs", but with a few
lines in ~/.emacs commented out:
;(semantic-mode 1)
;(semantic-stickyfunc-mode t)
I also commented out `setq' definitions for
semanticdb-default-save-directory and semanticdb-project-roots. With
those elements commented out, I couldn't reproduce the point-jumping
behavior. (I'll continue to test in this configuration, to be more
certain that the non-reproduce isn't just a coincidence.)
If it would help, I can restore the aforementioned `semantic' pieces,
and see if I can correlate point-jumping with specific timer events.
I can also try the save-excursion patch in
https://lists.gnu.org/archive/html/emacs-devel/2016-01/msg00029.html.
Finally,
https://lists.gnu.org/archive/html/emacs-devel/2016-01/msg00031.html
suggests this might be related to Bug #15045.
Steve
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
next prev parent reply other threads:[~2016-02-19 2:22 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-17 1:39 bug#22715: 25.0.91; Point randomly jumps during key entry Steve Revilak
2016-02-17 8:51 ` Andreas Schwab
2016-02-17 9:26 ` Joakim Jalap
2016-02-17 16:43 ` Eli Zaretskii
2016-02-17 16:52 ` Joakim Jalap
2016-02-17 17:22 ` Eli Zaretskii
2016-02-17 21:13 ` Joakim Jalap
2016-02-18 3:37 ` Eli Zaretskii
2016-02-18 7:44 ` Joakim Jalap
2016-02-17 16:43 ` Eli Zaretskii
2016-02-19 2:22 ` Steve Revilak [this message]
2016-02-19 10:30 ` Eli Zaretskii
2016-02-19 20:33 ` David Engster
2016-02-21 16:27 ` David Engster
2016-02-21 17:19 ` Eli Zaretskii
2016-02-22 17:22 ` Steve Revilak
2016-02-22 17:38 ` Eli Zaretskii
2016-02-22 18:33 ` Steve Revilak
2016-02-24 1:47 ` Steve Revilak
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=20160219022240.GD2572@srevilak.net \
--to=steve@srevilak.net \
--cc=22715@debbugs.gnu.org \
/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.