new file mode 100755
--- /dev/null
+++ b/tests/test-merge-revert
@@ -0,0 +1,46 @@
+#!/bin/sh
+# FIXME: This test may fail due to an uncritical bug in Mercurial.
+
+mkdir t
+cd t
+hg init
+echo "added file1" > file1
+echo "added file2" > file2
+hg add file1 file2
+hg commit -m "added file1 and file2" -d "0 0" -u user
+echo "changed file1" >> file1
+hg commit -m "changed file1" -d "0 0" -u user
+hg -q log
+hg id
+hg update -C 0
+hg id
+echo "changed file1" >> file1
+hg id
+hg revert
+hg diff
+hg status
+hg id
+hg update
+hg diff
+hg status
+hg id
+hg update -C 0
+echo "changed file1" >> file1
+HGMERGE=merge hg update
+hg diff
+hg status
+hg id
+hg revert
+hg diff
+hg status
+hg id
+hg revert -r tip
+hg diff
+hg status
+hg id
+hg update -C
+hg diff
+hg status
+hg id
+cd ..; /bin/rm -rf t
+