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bug#14616: 24.3.50; Excessive cursor movement on non-X Emacs
From: |
Lars Magne Ingebrigtsen |
Subject: |
bug#14616: 24.3.50; Excessive cursor movement on non-X Emacs |
Date: |
Fri, 14 Jun 2013 10:00:19 +0200 |
I don't have a test case for this bug, I'm afraid, but here's what I'm
seeing:
I read mail and news while travelling by using a putty client on my
phone. I ssh in to my home machine and have a screen there with an
Emacs running Gnus.
It seems like that when Emacs is doing network stuff (web/news), the
cursor is displayed momentarily visually at the first point in the
screen. Then it's displayed momentarily at the first point in the echo
area. Sometimes this repeats a few times.
Often the entire connection hangs while it's doing this -- I'm unable to
exit the screen for instance, so I suspect that Emacs is actually moving
the cursor back and forth between these two positions more rapidly than
my phone is able to display.
Once while this was happening, I got an SMS from my telco warning me
about large roaming data costs, which further points to this behaviour
generating a lot of data over the wire.
I have no idea how to start debugging this problem, but it's easily
reproducible for me.
It started happening about half a year ago. Does anybody have any
inkling what might be causing this problem? If not, I can try to see if
I can find a way to debug this.
Uhmn...
Oh, here's an strace from me typing `n' (next article) in Gnus four
times. The second and fourth time this cursor-moving behaviour was
triggered:
putty-trace
Description: Binary data
In GNU Emacs 24.3.50.2 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.10)
of 2013-06-10 on stories
Bzr revision: 112902 eliz@gnu.org-20130609164907-osn6il65f0gn31s1
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
System Description: Debian GNU/Linux 7.0 (wheezy)
Important settings:
value of $LANG: en_US
locale-coding-system: iso-latin-1-unix
default enable-multibyte-characters: t
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog http://lars.ingebrigtsen.no/