--- a/tests/test-grep	Sat Aug 12 13:51:14 2006 -0700
+++ b/tests/test-grep	Sat Aug 12 15:01:46 2006 -0700
@@ -20,3 +20,11 @@
 hg grep port port
 hg grep --all -nu port port
 hg grep import port
+
+hg cp port port2
+hg commit -m 4 -u spam -d '5 0'
+echo '% follow'
+hg grep -f 'import$' port2
+echo deport >> port2
+hg commit -m 5 -u eggs -d '6 0'
+hg grep -f --all -nu port port2