1 files changed, 25 insertions, 0 deletions
diff --git a/tests/dlist2.ur b/tests/dlist2.ur
new file mode 100644
index 00000000..3d2c7105
--- /dev/null
+++ b/tests/dlist2.ur
@@ -0,0 +1,25 @@
+datatype dlist = Nil | Cons of string * source dlist
+
+fun delist dl =
+    case dl of
+        Nil => <xml>[]</xml>
+      | Cons (x, s) => <xml>{[x]} <ctextbox/> :: {delistSource s}</xml>
+
+and delistSource s = <xml><dyn signal={dl <- signal s; return (delist dl)}/></xml>
+
+fun main () : transaction page =
+    tail0 <- source Nil;
+    tail <- source tail0;
+    tb <- source "";
+    return <xml><body>
+      {delist (Cons ("ROOT", tail0))}
+      <br/>
+      <ctextbox source={tb}/>
+      <button value="Add" onclick={hd <- get tb;
+                                   tl <- source Nil;
+                                   old <- get tail;
+
+                                   set old (Cons (hd, tl));
+                                   set tail tl}/>
+      <button value="Reset" onclick={set tail0 Nil; set tail tail0}/>
+    </body></xml>