Date: Wed, 25 Apr 2018 15:26:06 +0100 From: tech-lists@zyxst.net To: freebsd-questions@freebsd.org Subject: bash history buffer output mangled after repeated up-arrow Message-ID: <20180425142605.GA39933@desktop.local>
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hi, I've noticed now, for a while (like maybe over a year) that if you're in bash shell, hitting up-arrow (which usually loads history -1) multiple times will result in part of history becoming the prompt. I use csh as login shell now because csh doesn't have this problem. I can re-create the issue by logging in then doing the following: % bash $ . .profile hit uparrow a few times (in this case, 15 times), it gets to this in its history: bzcat /var/log/messages.1.bz2 |less prompt is now: [john@desktop ~]$ bzcat /var<--cursor is here waiting for input [keep hitting up arrow] now it's [john@desktop ~]$ ls -lah .g[history] where [history] is=20 find /usr/src/sys/sys/param.h -mtime; echo backspacing to (in this case) [john@desktop ~]$ ls -lah .g (which is as far as one can backspace on that line) and hitting return, restored the=20 normal prompt position. Repeatedly hitting up-arrow mangles bash history. it doesn't happen in csh. Not tried other shells. It only happens on freebsd boxes (11-stable and later). I've not seen it happen on linuxen=20 (raspabian, mint, ubuntu, centos). It doesn't matter if bash is built from= =20 source or installed via pkg. Doesn't matter if fdescfs is mounted or not. It still happens if I create a fresh freebsd-11-stable VM, log into it, install bash. Any ideas? thanks, --=20 J.
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