backends: Do not perform field deletion for new tasks

[etc/taskwarrior.git] / tasklib / lazy.py

diff --git a/tasklib/lazy.py b/tasklib/lazy.py
index 891eb5e9e83266fb4bb056b0d4d22b820959d2a0..f9e0c0a67e02a5fc8c0b29c8cfd5c3fcce25c3a1 100644 (file)
--- a/tasklib/lazy.py
+++ b/tasklib/lazy.py
@@ -32,16 +32,25 @@ class LazyUUIDTask(object):
         return getattr(self, name)
 
     def __eq__(self, other):
-        if other['uuid']:
+        if other and other['uuid']:
             # For saved Tasks, just define equality by equality of uuids
             return self['uuid'] == other['uuid']
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     def __hash__(self):
         return self['uuid'].__hash__()
 
     def __repr__(self):
         return "LazyUUIDTask: {0}".format(self._uuid)
 
+    def __copy__(self):
+        return LazyUUIDTask(self._tw, self._uuid)
+
+    def __deepcopy__(self, memo):
+        return LazyUUIDTask(self._tw, self._uuid)
+
     @property
     def saved(self):
         """
@@ -49,6 +58,14 @@ 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