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First of all, VTE ships its own Bash configuration snippet in /etc/profile. /vte.sh that already does this and provides the definition of the __vte_prompt_command function. So it's better to let VTE own its own configuration.

Secondly, this creates problems in interactive Bash instances running inside a container that doesn't have VTE installed but has the VTE_VERSION environment variable set, because PROMPT_COMMAND tries to access a missing __vte_prompt_command function. This is observed in Toolbox containers created from the Red Hat Universal Base Image. Toolbox containers inherit environment variables like TERM and VTE_VERSION from the host so that interactive shells inside the container are configured like the ones on the host. However, UBI doesn't have /etc/profile.d/vte.sh. Hence, instead of silently ignoring the VTE specific configuration bits, PROMPT_COMMAND ends up trying to access a missing __vte_prompt_command function.

[ This is important because we are going to ship Toolbox in RHEL 9.0. ]

For what it's worth, we are now shipping this in Fedora >= 35.

Ping.

Ping.

Ping

(In reply to Debarshi Ray from comment #4)
> Ping

This is planned to get fixed in RHEL9.1

The fix is in git:

http://pkgs.devel.redhat.com/cgit/rpms/setup/commit/?h=rhel-9-main&id=317fa1c47e525f960594b05adc145fcbbe769c79

Thanks for getting this done, Martin!  Much appreciated.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (setup bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:8386