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Re: Crash when moving full-width glyphs across lines

From: Kirill Chibisov
Subject: Re: Crash when moving full-width glyphs across lines
Date: Mon, 16 Dec 2019 21:37:12 +0300

On Dec 16, Greg Wooledge wrote:
> On Mon, Dec 16, 2019 at 04:37:28PM +0100, Christian Dürr wrote:
> > Repeat-By:
> >     Paste `https://こんにち` into bash and add whitespace before it until it is
> >     in the next line. Then start deleting that whitespace until it is on the
> >     previous line again. It should crash as soon as only `https://` is on 
> > the
> >     original line.
> I couldn't reproduce this crash in Debian 10, bash 5.0.3, inside urxvt,
> with LANG=en_US.UTF-8, in vi mode or in emacs mode.

I'm not sure whether we've tried urxvt, but I can't repro the crash with
bash 4.4.23 on my Gentoo system, however using bash 5.0.11 on the same
system results in crash(it's just exit with a bad code, but nothing in
dmesg, journal, etc) under the mentioned conditions.

The crash is a bit random iirc, I know that it's quite easy to repro in
`alacritty` (It was initially faced there), and it was also found by Christian
in vte and xterm later on.

My LANG is also en_US.UTF-8 and I was using default(emacs) mode.

I'll try to send a backtrace with gdb later.

Kirill A. Chibisov

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