added testcase for issue #187
diff --git a/example/issues.ref b/example/issues.ref
index 6d9a893..13bafc2 100644
--- a/example/issues.ref
+++ b/example/issues.ref
@@ -4,3 +4,4 @@
 Yay..
 [Placeholder[1], Placeholder[2], Placeholder[3], Placeholder[4]]
 [3, 5, 7, 9, 11, 13, 15]
+0==0, 1==1, 2==2, 3==3, 4==4, 5==5, 6==6, 7==7, 8==8, 9==9,