Disclaimer: this bug has been filed in a semi-automated manner.
When emerging the package net-print/cups-1.5.2-r4, the following elog messages are displayed:
* For information about installing a printer and general cups setup
* take a look at: http://www.gentoo.org/doc/en/printing-howto.xml
Such messages should only be displayed when the package is a new install.
These situations can be checked in the ebuild as follows:
if ! has_version 'net-print/cups'; then
See the tracker bug 440214 for more details.
Done in 1.6.2