X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/76ef07d9a8863b337a7aca651842f094472f867f..96fb17929bd52d58a8f760eab98265824ac5dce3:/tasklib/lazy.py

diff --git a/tasklib/lazy.py b/tasklib/lazy.py
index 1e13fc3..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
@@ -105,8 +113,47 @@ class LazyUUIDTaskSet(object):
             yield LazyUUIDTask(self._tw, uuid)
 
     def __sub__(self, other):
+        return self.difference(other)
+
+    def __isub__(self, other):
+        return self.difference_update(other)
+
+    def __rsub__(self, other):
         return LazyUUIDTaskSet(self._tw,
-                               self._uuids - set(t['uuid'] for t in other))
+            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)
+
+    def __ge__(self, other):
+        return self.issuperset(other)
 
     def issubset(self, other):
         return all([task in other for task in self])