Fixed bugz0r #893239.

plugins/Services.py

@@ -65,7 +65,7 @@ class ValidNickOrEmptyString(registry.String):
         if v and not ircutils.isNick(v):
             raise registry.InvalidRegistryValue, \
                   'Value must be a valid nick or the empty string.'
-        self.value = v
+        registry.String.setValue(self, v)
             
 conf.registerPlugin('Services')
 # Not really ChannelValues: but we can have values for each network.  We

src/registry.py

@@ -215,6 +215,10 @@ class Value(Group):
         own setValue."""
         self._lastModified = time.time()
         self.value = v
+        if self.supplyDefault:
+            for (name, v) in self.children.items():
+                if v.__class__ is self.X:
+                    self.unregister(name)
     
     def __str__(self):
         return repr(self())