[Anthony-G]

Thanks. I wasn't aware of that option. I've added the following to my Bash-specific shell scripts:

    # Cause command substitution to inherit the value of the `errexit` option.
    # Introduced in Bash 4.4
    if [ "${BASH_VERSINFO[0]}" -gt 4 ] ||
      { [ "${BASH_VERSINFO[0]}" -eq 4 ] && [ "${BASH_VERSINFO[1]}" -ge 4 ]; }; then
        shopt -s inherit_errexit
    fi