--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/column_join_in11.pileup	Tue Apr 01 09:30:45 2014 -0400
@@ -0,0 +1,36 @@
+0610009D07Rik	3	1.73	1.73	1.15	12/12	2	1
+0610010K14Rik	1	1.41	1.41	0.96	6/12	1	1
+1110002N22Rik	3	2.08	2.08	0.74	10/12	2	1
+1110008L16Rik	1	1.00	1.00	-1.35	12/12	1	1
+Acta1	2	1.54	1.54	0.63	11/12	2	1
+Actb	1	1.33	1.33	0.00	9/12	2	1
+Actg1	1	3.00	3.00	0.87	4/12	2	1
+Actl6a	1	1.10	1.10	-0.33	10/12	1	1
+Actl6b	1	2.45	2.45	2.13	2/12	1	1
+Bnc2	1	2.00	2.00	1.67	3/12	1	1
+Bptf	1	3.46	3.46	3.17	1/12	1	1
+Brip1	1	1.22	1.22	-0.19	8/12	1	1
+Brms1l	1	12.00	12.00	3.17	1/12	2	1
+Btf3;Gm3531	1	2.00	2.00	1.67	3/12	1	1
+Bub3	3	2.00	2.00	2.13	9/12	1	1
+C330007P06Rik	1	2.45	2.45	2.13	2/12	1	1
+Cad	1	2.45	2.45	0.50	2/12	1	1
+Calm1;Calm3;Calm2	1	2.00	2.00	1.03	3/12	1	1
+Cbx1	2	3.39	3.39	2.24	5/12	2	1
+E2f6	1	2.40	2.40	0.53	5/12	2	1
+Eed	1	1.20	1.20	-0.47	10/12	2	1
+Gm10079	2	1.41	1.41	0.16	12/12	1	1
+Gm11230	2	1.48	1.48	1.21	11/12	1	1
+Gm13072;Trmt112	1	3.46	3.46	3.17	1/12	1	1
+Gm13092;LOC677017	1	1.33	1.33	0.29	9/12	2	1
+Gm14231	1	1.31	1.31	0.51	7/12	1	1
+Gm14456;Tpt1	1	2.00	2.00	1.67	3/12	1	1
+Gm15501;Rps8	1	1.55	1.55	1.14	5/12	1	1
+Gm189	1	1.20	1.20	0.16	10/12	2	1
+Sfrs11	3	1.73	1.73	1.15	12/12	2	1
+Sin3a	4	3.43	3.43	1.93	7/12	2	1
+Sirt7	1	2.00	2.00	1.67	3/12	1	1
+Skiv2l2	12	3.46	3.46	-0.72	12/12	2	1
+Tubb2b	4	2.00	2.00	0.49	12/12	2	1
+Zscan4e	1	1.41	1.41	0.63	6/12	1	1
+Zscan4f	2	1.70	1.70	1.00	10/12	2	1