X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/3543f3d0b841693af1923ddbaac440c767e914bd..5ec1eb1a779c700a7abd88f4cc51940b036c50b8:/tasklib/lazy.py

diff --git a/tasklib/lazy.py b/tasklib/lazy.py
index c3feed5..527a995 100644
--- a/tasklib/lazy.py
+++ b/tasklib/lazy.py
@@ -49,6 +49,14 @@ class LazyUUIDTask(object):
         """
         return True
 
+    @property
+    def _modified_fields(self):
+        return set()
+
+    @property
+    def modified(self):
+        return False
+
     def replace(self):
         """
         Performs conversion to the regular Task object, referenced by the
@@ -110,18 +118,37 @@ class LazyUUIDTaskSet(object):
     def __isub__(self, other):
         return self.difference_update(other)
 
+    def __rsub__(self, other):
+        return LazyUUIDTaskSet(self._tw,
+            set(t['uuid'] for t in other) - self._uuids)
+
     def __or__(self, other):
         return self.union(other)
 
     def __ior__(self, other):
         return self.update(other)
 
+    def __ror__(self, other):
+        return self.union(other)
+
     def __xor__(self, other):
         return self.symmetric_difference(other)
 
     def __ixor__(self, other):
         return self.symmetric_difference_update(other)
 
+    def __rxor__(self, other):
+        return self.symmetric_difference(other)
+
+    def __and__(self, other):
+        return self.intersection(other)
+
+    def __iand__(self, other):
+        return self.intersection_update(other)
+
+    def __rand__(self, other):
+        return self.intersection(other)
+
     def __le__(self, other):
         return self.issubset(other)