Hi,

With Automake master and 1.12.2, if Makefile.am has:

  nobase_foo_DATA = sub/nodist.dat
  nobase_dist_foo_DATA = sub/dist.dat

sub/dist.dat is not packed in the distribution.  I doubt this is a bug,
but the opposite use of dist_ and nobase_:

  dist_bar_DATA = sub/base.dat
  nobase_dist_bar_DATA = sub/nobase.dat

works just fine.

I'm attaching a test case.

Regards,
-- 
Daiki Ueno