bash-completion и emerge, как подружить?

Обычно после установки пакетов, требующих дополнительной настройки, выводятся сообщения, как, например, это:

>>> Messages generated by process 30600 on 2010-01-02 11:10:36 EET for package app-shells/bash-completion-1.1-r5:

LOG: postinst
Any user can enable the module completions without editing their
.bashrc by running:

    eselect bashcomp enable <module>

The system administrator can also be enable this globally with

    eselect bashcomp enable --global <module>

Make sure you at least enable the base module! Additional completion
modules can be found by running

    eselect bashcomp list

If you use non-login shells you still need to source
/etc/profile.d/bash-completion.sh in your ~/.bashrc.
If you are interested in using the provided bash completion functions with
zsh, valuable tips on the effective use of bashcompinit are available:
  http://www.zsh.org/mla/workers/2003/msg00046.html