--- a/tests/test-export	Sun Feb 15 11:14:20 2009 -0600
+++ b/tests/test-export	Tue Feb 10 16:31:52 2009 -0600
@@ -19,3 +19,5 @@
 grep HG export_internal | wc -l | sed -e 's/^ *//'
 echo "# exporting 4 changesets to a file"
 hg export 1 2 3 4 | grep HG | wc -l | sed -e 's/^ *//'
+echo "# exporting revision -2 to a file"
+hg export -- -2