Comment 7 for bug 1925823

The bug is NOT the error of the original GNU package, but of the way how it is integrated into the Ubuntu 21.04, because if I download the GNU package itself, compile and try, then it works fine.

In detail what I did:

mkdir -p ~/bash

cd ~/bash

rm -fr bash-*

sudo apt-get -y install byacc

wget https://ftp.gnu.org/gnu/bash/bash-5.1.tar.gz

tar xvzf bash-*.tar.gz
rm bash-*.tar.gz
cd bash-*

time ( ./configure ; make )

env -i PATH="$PWD:$PATH" ./bash --noprofile --norc

and here if I do the same cut and paste tests, and drop a command with a terminating line feed character, then this bash binary will simply execute it ...