$ hg rename foo bar $ hg diff diff -r b01d46ff402d foo --- foo/foo Fri Jun 05 15:49:22 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -a diff -r b01d46ff402d bar --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ bar/bar Fri Jun 05 15:49:23 2009 +0000 @@ -0,0 +1,1 @@ +a