The ebuild howto has been clear on this topic for quite a while:
"The fourth subsection of the package name is the Gentoo Linux-specific revision number ({-r#}). This subsection, like the suffix, is also optional. # is a non-zero positive integer; e.g., package-4.5.3-r3" Michael Sterrett -Mr. Bones.- [EMAIL PROTECTED] On Sat, 29 Mar 2008, Brian Harring wrote:
Recently dev-ruby/rubygems-1.1.0-r0 (explicit -r0 in ebuild name) was commited to mainline gentoo-x86; as far as I know, this is in conflict w/ long term practice of not explicitly specifying -r0 in the ebuild name due to the implicit -r0 addition in comparison/atom matching. At this point, said ebuild is the only one in the tree with an explicit -r0 also, so I'm advocating having the -r0 dropped.
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