GNU bug report logs - #2772
23.0.91; emacsclient loses keybindings after terminal suspend/resume under screen

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stefan Kangas <stefan <at> marxist.se>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#2772: closed (23.0.91; emacsclient loses keybindings after
 terminal suspend/resume under screen)
Date: Wed, 21 Aug 2019 15:30:02 +0000

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Your message dated Wed, 21 Aug 2019 17:29:10 +0200
with message-id <CADwFkmkfJjw5Dz-rFuoFG2GSPBV3YwHJdVjVxk0rcbS-tCPO7w <at> mail.gmail.com>
and subject line Re: bug#2772: 23.0.91; emacsclient loses keybindings after terminal suspend/resume under screen
has caused the debbugs.gnu.org bug report #2772,
regarding 23.0.91; emacsclient loses keybindings after terminal suspend/resume under screen
to be marked as done.

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From: Jakob Krainz <jakob <at> hawo.stw.uni-erlangen.de>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.0.91; emacsclient loses keybindings after terminal suspend/resume under screen
Date: Wed, 25 Mar 2009 00:07:29 +0100 (CET)

When I start "emacsclient -t" under GNU screen,
then suspend it (with C-z) and resume again, it stops
understanding the arrow keys.

Instead it starts echoing error messages like
M-[ b is undefined

The value of $TERM is:
$ echo $TERM
screen


In GNU Emacs 23.0.91.1 (i386-unknown-freebsd7.1)
 of 2009-03-22 on ente.hawo.stw.uni-erlangen.de
configured using `configure  '--with-x-toolkit=no' '--without-x' '--prefix=/home/jakob/emacs' '--enable-asserts' '--without-dbus' 'CFLAGS=-O -pipe -march=pentium4 -g' 'LDFLAGS=-L/usr/pkg/lib' 'CPPFLAGS=-I/usr/pkg/include''

Important settings:
  value of $LC_ALL: de_DE.UTF-8
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: de_DE.ISO8859-15
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Info

Minor modes in effect:
  show-paren-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

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From: Stefan Kangas <stefan <at> marxist.se>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 2772-done <at> debbugs.gnu.org, robert-emacs <at> cochranmail.com,
 jakob <at> hawo.stw.uni-erlangen.de, Noam Postavsky <npostavs <at> gmail.com>
Subject: Re: bug#2772: 23.0.91; emacsclient loses keybindings after terminal
 suspend/resume under screen
Date: Wed, 21 Aug 2019 17:29:10 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Noam Postavsky <npostavs <at> gmail.com>
>> Date: Sun, 03 Jun 2018 20:14:13 -0400
>> Cc: 2772 <at> debbugs.gnu.org, Jakob Krainz <jakob <at> hawo.stw.uni-erlangen.de>
>>
>> Robert Cochran <robert-emacs <at> cochranmail.com> writes:
>>
>> > I was unable to reproduce this with
>> >
>> > GNU Screen 4.06.02
>> > GNU Emacs 27.0.50 (build 1, x86_64-redhat-linux-gnu, X toolkit, Xaw3d scroll bars) of 2018-06-03
>> >
>> > I was able to suspend the emacsclient, and then 'fg' it again. Arrow
>> > keys were behaving as expected.
>>
>> I couldn't reproduce with Emacs 24.3 (oldest Emacs I have), and screen
>> 4.05.00 either.
>>
>> (I put the OP on cc, on the off chance they're still reachable after so
>> long)
>
> A termscript file with all the keyboard input starting from before the
> suspension, from a system where the problem can be reproduced, could
> give us some hints.  See open-termscript.

I can't reproduce this either (arrow keys were working) with the given
recipe on:

GNU Emacs 27.0.50 (build 40, x86_64-pc-linux-gnu, X toolkit, Xaw
scroll bars) of 2019-08-08
Screen version 4.06.02 (GNU) 23-Oct-17

Since there's been no update in over a year, I'm guessing that it'll
be hard to make further progress here.  I'm therefore closing this
bug.  If anyone can reproduce this, please re-open the bug.

Thanks,
Stefan Kangas

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