diff --git a/t/clean.do b/t/clean.do
index 48bc555..68eadb5 100644
--- a/t/clean.do
+++ b/t/clean.do
@@ -1,2 +1,2 @@
-redo example/clean
+redo example/clean curse/clean
 rm -f c c.c c.c.c c.c.c.b c.c.c.b.b d
diff --git a/t/curse/.gitignore b/t/curse/.gitignore
new file mode 100644
index 0000000..ef540df
--- /dev/null
+++ b/t/curse/.gitignore
@@ -0,0 +1,2 @@
+*.n1
+*.n2
diff --git a/t/curse/all.do b/t/curse/all.do
new file mode 100644
index 0000000..675d041
--- /dev/null
+++ b/t/curse/all.do
@@ -0,0 +1,3 @@
+redo-ifchange 1.n0 2.n0 3.n0
+DEPS=$(seq 10 | sed 's/$/.n1/')
+redo-ifchange $DEPS
diff --git a/t/curse/clean.do b/t/curse/clean.do
new file mode 100644
index 0000000..6b093db
--- /dev/null
+++ b/t/curse/clean.do
@@ -0,0 +1 @@
+rm -f *~ .*~ *.n1 *.n2 *.tmp
diff --git a/t/curse/default.n0.do b/t/curse/default.n0.do
new file mode 100644
index 0000000..056a36d
--- /dev/null
+++ b/t/curse/default.n0.do
@@ -0,0 +1,2 @@
+DEPS=$(seq 10 | sed 's/$/.n1/')
+redo-ifchange $DEPS
diff --git a/t/curse/default.n1.do b/t/curse/default.n1.do
new file mode 100644
index 0000000..bb5b3d4
--- /dev/null
+++ b/t/curse/default.n1.do
@@ -0,0 +1,3 @@
+DEPS=$(seq 100 | sed 's/$/.n2/')
+redo-ifchange $DEPS
+echo n1-$1
diff --git a/t/curse/default.n2.do b/t/curse/default.n2.do
new file mode 100644
index 0000000..fd6689c
--- /dev/null
+++ b/t/curse/default.n2.do
@@ -0,0 +1 @@
+echo n2-$1