The check of the prefix on source and patch names requires it to be '%{name}' or '%{'. Besides that this effectively boils down to '%{', it also requires packager to use %{name} in the Patch: or Source fields. However, contrary to popular belief, this is a matter of style according to the guidelines; using the "cleartext" name is perfectly OK.

Thus, this test should also allow the cleartext name besides a %{ macro invocation.

http://fedoraproject.org/wiki/Packaging:Guidelines#Macros