you cannot set the A variable in ebuilds, but the following ebuild has: app-i18n/jless-iso254/jless-iso254-358.ebuild:A=less-${PV}.tar.gz
perhaps this is a thing repoman should check as well...
http://bugs.gentoo.org/show_bug.cgi?id=28171 ;)
Fixed. I think it would be great if repoman checks these variables for us ;-)