[Fedora-packaging] initscripts in spec file scriptlets

[Chuck Anderson]

http://fedoraproject.org/wiki/Packaging/SysVInitScript

has an example of how to write %post/%preun scriptlets that install 
init scripts.  The problem is, the %post one will overwrite the 
/etc/rc?.d/[KS] symlinks upon every package upgrade:

%post
# This adds the proper /etc/rc*.d links for the script
/sbin/chkconfig --add <script>

shouldn't this rather be:

%post
# This adds the proper /etc/rc*.d links for the script
# only during the initial package install, not upgrades
if [ $1 -eq 1 ]; then
    /sbin/chkconfig --add <script>
fi

so it only does the --add on initial installs, not upgrades?  If you 
re-do the chkconfig --add on upgrades, won't that overwrite the 
runlevel on/off settings that the sysadmin may have customized?