`]777;preexec\` before and `: 1` after the output

[willianrampazzo]

I have just installed bash_kernel for some testing and all my cell outputs have ]777;preexec\ before and : 1 after the output. The : 1 output is show on a red line. Is it expected?

Example:

]777;preexec\ls: cannot access 'foo': No such file or directory
: 1

Software versions:

$ bash --version
GNU bash, version 5.2.26(1)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

$ jupyter --version
Selected Jupyter core packages...
IPython          : 8.24.0
ipykernel        : 6.29.4
ipywidgets       : not installed
jupyter_client   : 8.6.1
jupyter_core     : 5.7.2
jupyter_server   : 2.14.0
jupyterlab       : 4.2.0
nbclient         : 0.10.0
nbconvert        : 7.16.4
nbformat         : 5.10.4
notebook         : 7.2.0
qtconsole        : not installed
traitlets        : 5.14.3