.

wcfs/testprog/treedelta-genallstructs.py

@@ -81,6 +81,15 @@ def kvDecode(kvText, vdecode): # -> kvDict
 # diff computes difference in between mappings d1 and d2.
 DEL = 'ø'
 def diff(d1, d2): # -> [] of (k,v) to change; DEL means del[k]
+    delta = []
+    keys = set(d1.keys())
+    keys.union(d2.keys())
+    for k in sorted(keys):
+        v1 = d1.get(k, DEL)
+        v2 = d2.get(k, DEL)
+        if v1 is not v2:
+            delta.append((k,v2))
+    return delta
 
 
 # patch changes mapping d according to diff.