bash completion error with shopt -s failglob #6069
Description
I have failglob set in my interactive shells, and buildah's bash completion doesn't seem to work with that. In this output from bash --norc, I pressed tab after buildah :
bash-5.2$ . /etc/bash_completion
bash-5.2$ shopt -s failglob
bash-5.2$ buildah bash: no match: @(--cgroup-manager|--registries-conf|--registries-conf-dir|--root|--runroot|--storage-driver|--storage-opt|--userns-uid-map|--userns-gid-map)
bash: [: 1: unary operator expected