Anyone seen this error?

[Quentin Spencer <qspencer ieee org>]

I recently received a bug report that one of my packages (in devel) 
fails when built in mock with the following error:

error: Installed (but unpackaged) file(s) found:
  /usr/share/info/dir

I was able to duplicate this in a mock build, but here's what I don't 
understand: after the build failure, I don't see a "dir" file in 
$RPM_BUILD_ROOT/usr/share/info . Furthermore, if I try the same build on 
a (mostly) up to date devel system, the build completes without any 
problems. Why? In looking at other packages that I maintain, one that 
was formerly in core has the line

rm -f ${RPM_BUILD_ROOT}%{_infodir}/dir

in the %install section. That seems like what I need to fix this 
problem, but it also seems like an ugly hack to deal with a problem that 
a lot of packages are likely to have and IMHO maybe should be handled by 
the rpm tools automatically. Is there a better way to do this?

-Quentin