# move generated documents from docbook stuff
foreach my $file (qw/exim.8 spec.txt filter.txt/) {
+ die "Empty file \"$file\"\n" if -z File::Spec->catfile( $old_docdir, $file );
move( File::Spec->catfile( $old_docdir, $file ), File::Spec->catfile( $new_docdir, $file ) );
}