diff -ruN r-cran-combinat.bak/NAMESPACE r-cran-combinat/NAMESPACE
--- r-cran-combinat.bak/NAMESPACE	1970-01-01 09:00:00.000000000 +0900
+++ r-cran-combinat/NAMESPACE	2013-04-29 19:52:09.000000000 +0900
@@ -0,0 +1 @@
+exportPattern("^[^\\.]")