diff --git a/t/deps/dirtest/.gitignore b/t/deps/dirtest/.gitignore
new file mode 100644
index 0000000..b105280
--- /dev/null
+++ b/t/deps/dirtest/.gitignore
@@ -0,0 +1,2 @@
+log
+dir1/stinky
diff --git a/t/deps/dirtest/clean.do b/t/deps/dirtest/clean.do
new file mode 100644
index 0000000..3e6bcce
--- /dev/null
+++ b/t/deps/dirtest/clean.do
@@ -0,0 +1 @@
+rm -f *~ .*~ dir1/*~ dir1/.*~ dir1/stinky dir1/log log
diff --git a/t/deps/dirtest/dir1/all.do b/t/deps/dirtest/dir1/all.do
new file mode 100644
index 0000000..dab7111
--- /dev/null
+++ b/t/deps/dirtest/dir1/all.do
@@ -0,0 +1,2 @@
+redo-ifchange stinky
+echo $$ >>log
diff --git a/t/deps/dirtest/dir1/stinky.do b/t/deps/dirtest/dir1/stinky.do
new file mode 100644
index 0000000..074c4d1
--- /dev/null
+++ b/t/deps/dirtest/dir1/stinky.do
@@ -0,0 +1 @@
+echo "I'm stinky"
diff --git a/t/deps/dirtest/t1.do b/t/deps/dirtest/t1.do
new file mode 100644
index 0000000..b9b84b9
--- /dev/null
+++ b/t/deps/dirtest/t1.do
@@ -0,0 +1,2 @@
+redo-ifchange dir1/
+echo $$ >>log
diff --git a/t/deps/dirtest/t2.do b/t/deps/dirtest/t2.do
new file mode 100644
index 0000000..e01695e
--- /dev/null
+++ b/t/deps/dirtest/t2.do
@@ -0,0 +1,2 @@
+redo-ifchange dir1
+echo $$ >>log
diff --git a/t/deps/dirtest/t3.do b/t/deps/dirtest/t3.do
new file mode 100644
index 0000000..48e8643
--- /dev/null
+++ b/t/deps/dirtest/t3.do
@@ -0,0 +1,2 @@
+redo-ifchange dir1/all
+echo $$ >>log
diff --git a/t/deps/dirtest/test.do b/t/deps/dirtest/test.do
new file mode 100644
index 0000000..e48de59
--- /dev/null
+++ b/t/deps/dirtest/test.do
@@ -0,0 +1,19 @@
+touch t?.do
+for first in t1 t2 t3; do
+	for second in t1 t2 t3; do
+		rm -f log dir1/log dir1/stinky
+		. ../../flush-cache.sh
+		redo $first
+		touch $second.do
+		. ../../flush-cache.sh
+		redo $second
+		. ../../flush-cache.sh
+		redo-ifchange $second
+		C1="$(wc -l <dir1/log)"
+		C2="$(wc -l <log)"
+		if [ "$C1" != 1 -o "$C2" != 2 ]; then
+			echo "failed: $first>$second, c1=$C1, c2=$C2" >&2
+			exit 55
+		fi
+	done
+done
diff --git a/t/deps/test.do b/t/deps/test.do
index dc03f0c..34ccbe9 100644
--- a/t/deps/test.do
+++ b/t/deps/test.do
@@ -1 +1,2 @@
-redo test1 test2 ifchange-fail overwrite basic/test
+redo test1 test2 ifchange-fail overwrite basic/test dirtest/test
+
diff --git a/t/flush-cache.sh b/t/flush-cache.sh
index 83e87ba..eabf3a1 100644
--- a/t/flush-cache.sh
+++ b/t/flush-cache.sh
@@ -1,3 +1,3 @@
-echo "Flushing redo cache..." >&2
+#echo "Flushing redo cache..." >&2
 find "$REDO_BASE/.redo" -name 'built^*' -o -name 'mark^*' |
 	xargs rm -f >&2