CentOS - Jun 2012 - yum install, and exit status

Hello,

IIRC, the exit status of "yum install foo bar" was (long ago !) 0 only
if foo *and* bar could be installed.
Nowadays, it is 0 if foo *or* bar (or both) are correctly installed.

Is there a way to get the old behavior ?

Thanks,

-- 
Philippe Naudin