--- /dev/null
+#!/bin/sh -ex
+
+dotest() {
+ srci=$1
+ srcdn=$2
+ dest=$3
+ n=$4
+
+ touch ./$srci/srci$n
+ ln ./$srci/srci$n ./$srcdn/srcdn$n
+
+ mv ./$srcdn/srcdn$n ./$dest/dest$n
+}
+
+# srci=srcdn=destdn
+dotest 'a' 'a' 'a' 1
+
+# srcdn=destdn
+dotest 'b' 'a' 'a' 2
+
+# srci=destdn
+dotest 'a' 'b' 'a' 3
+
+# srci=srcdn
+dotest 'a' 'a' 'b' 4
+
+# all different
+dotest 'a' 'b' 'c' 5
+