--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-diff-reverse.t	Tue Aug 31 10:21:24 2010 +0200
@@ -0,0 +1,44 @@
+  $ hg init
+
+  $ cat > a <<EOF
+  > a
+  > b
+  > c
+  > EOF
+  $ hg ci -Am adda
+  adding a
+
+  $ cat > a <<EOF
+  > d
+  > e
+  > f
+  > EOF
+  $ hg ci -m moda
+
+  $ hg diff --reverse -r0 -r1
+  diff -r 2855cdcfcbb7 -r 8e1805a3cf6e a
+  --- a/a	Thu Jan 01 00:00:00 1970 +0000
+  +++ b/a	Thu Jan 01 00:00:00 1970 +0000
+  @@ -1,3 +1,3 @@
+  -d
+  -e
+  -f
+  +a
+  +b
+  +c
+
+  $ cat >> a <<EOF
+  > g
+  > h
+  > EOF
+  $ hg diff --reverse --nodates
+  diff -r 2855cdcfcbb7 a
+  --- a/a
+  +++ b/a
+  @@ -1,5 +1,3 @@
+   d
+   e
+   f
+  -g
+  -h
+