GNU bug report logs - #16988
24.3.50; emacs -nw -Q --eval '(kill-emacs)' takes 2 seconds unless I hit a key

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#16988: closed (24.3.50; emacs -nw -Q --eval '(kill-emacs)'
 takes 2 seconds unless I hit a key)
Date: Tue, 22 Apr 2014 20:37:01 +0000

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Your message dated Tue, 22 Apr 2014 16:36:15 -0400
with message-id <jwvk3ahgl0d.fsf-monnier+emacsbugs <at> gnu.org>
and subject line Re: bug#16988: 24.3.50; emacs -nw -Q --eval '(kill-emacs)' takes 2 seconds unless I hit a key
has caused the debbugs.gnu.org bug report #16988,
regarding 24.3.50; emacs -nw -Q --eval '(kill-emacs)' takes 2 seconds unless I hit a key
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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16988: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16988
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From: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50;
 emacs -nw -Q --eval '(kill-emacs)' takes 2 seconds unless I hit a key
Date: Tue, 11 Mar 2014 16:22:21 +0100

With latest trunk:
$ time src/emacs -nw -Q --eval '(kill-emacs)'

real	0m2.064s
user	0m0.030s
sys	0m0.010s

If however I hit a key, emacs exits immediately.

with 24.3 (git commit 3a1ce0685) :
$ time src/emacs -nw -Q --eval '(kill-emacs)'

real	0m0.063s
user	0m0.030s
sys	0m0.012s

The '--eval' part is just there to make emacs exit asap.

Note that replacing -Q with --batch works fine.

-- 
Nico.

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From: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
To: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>
Cc: 16988-done <at> debbugs.gnu.org
Subject: Re: bug#16988: 24.3.50;
 emacs -nw -Q --eval '(kill-emacs)' takes 2 seconds unless I hit a key
Date: Tue, 22 Apr 2014 16:36:15 -0400

> If we have reasons to believe xterm will never reach e.g. version 1500,
> perhaps we can test for that.

I installed a patch along those lines, using 2000 as the "threshold".


        Stefan

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