[Yum] "update" versus "install"

[Robert P. J. Day]

  i'm a little puzzled over the documented behaviour of the yum "update"
option and what it's actually supposed to do.  are all variations of "yum
update" only supposed to update existing RPMs on your ssystem?

  as an example, i added matthias' ayo.freshrpms.net repository to
/etc/yum.conf.  now i know he has several xine-related RPMs there, and i
have *nothing* xine-related on my system.

  so let's say i type

# yum list updates

this should give me the list of all possible updates for my system, but
should *not* mention xine, since i have no current version, it shouldn't
be considered as a potential update, right?

and "yum update" i assume should work the same way -- updates can only be
considered for RPMs that already exist on my system. and yet the yum man
page reads:

  update  If run without any packages, update will update every currently
              installed package.  If one or more packages are  specified,  Yum
              will  only update the listed packages.  While updating packages,
              yum will ensure that all  dependencies  are  satisfied. If no
              package  matches  the given package name(s), they are assumed to
              be a shell glob and any matches are then installed.  <--- ??

what's with that final "installed"?  is that just a typo?  i'm thinking 
that any variation on an "update" should never "install", which i 
interpret differently.

or am i just overdiscussing things again? :-)

rday