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From: Tomas Janousek <tomi@nomi.cz>
Newsgroups: gnu.bash.bug
Subject: History not saved when closing terminal while bash is sourcing a script
Date: Sat, 3 Aug 2019 17:05:29 +0200
Lines: 55
Approved: bug-bash@gnu.org
Message-ID: <mailman.711.1564846128.1985.bug-bash@gnu.org>
References: <20190803150529.u5lf2tzvgo5sie7m@nomi.cz>
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Hello,

today I was wondering why I'm sometimes losing history entries and found =
out
that bash (5.0.3(1)-release, on Debian testing) won't save the history fi=
le
on closing the terminal window if it's currently sourcing something. I'm
attaching a script that uses tmux to simulate the scenario. On my system,=
 only
"test 1" is printed, not "test 2" as expected. I think this is a bug.

A more realistic example (what actually caused my losing of history entri=
es)
is Midnight Commander: many distros install the following file into
/etc/profile.d: https://github.com/MidnightCommander/mc/blob/master/contr=
ib/mc.sh.in
which sources https://github.com/MidnightCommander/mc/blob/master/contrib=
/mc-wrapper.sh.in
so that when one exits mc, the outer shell chdirs to the last directory
browsed in mc. But this means one loses all history entries from the sess=
ion
before invoking mc.

(Workaround for mc: invoke history -a before sourcing mc-wrapper. Or disa=
ble
this wrapper entirely.)

Regards,
--=20
Tom=C3=A1=C5=A1 Janou=C5=A1ek, a.k.a. Pivn=C3=ADk, a.k.a. Liskni_si, http=
://work.lisk.in/

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#!/usr/bin/env bash=0A=0Atmux_session=3D"$$"=0A=0Asourced_script=3D$(mktemp=
)=0Atrap 'rm "$sourced_script"' EXIT=0A=0Acat >"$sourced_script" <<-\EOF=0A=
	#!bash=0A	cat >/dev/null=0AEOF=0A=0Atmux new-session -s "$tmux_session" -n=
 win1 -d=0Asleep 0.5=0Atmux send-keys -t "$tmux_session:win1" -l "# $tmux_s=
ession: test 1"$'\n'=0Asleep 0.5=0Atmux kill-window -t "$tmux_session:win1"=
=0Asleep 0.5=0Atmux new-session -s "$tmux_session" -n win2 -d=0Asleep 0.5=
=0Atmux send-keys -t "$tmux_session:win2" -l "# $tmux_session: test 2"$'\n'=
=0Asleep 0.5=0Atmux send-keys -t "$tmux_session:win2" -l "source $(printf "=
%q" "$sourced_script")"$'\n'=0Asleep 0.5=0Atmux kill-window -t "$tmux_sessi=
on:win2"=0Asleep 0.5=0A=0Agrep "^# $tmux_session: " ~/.bash_history=0A
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