Added a period to the invalid alias complaint.

plugins/Alias.py

@@ -196,11 +196,13 @@ class Alias(callbacks.Privmsg):
             raise AliasError, 'Names cannot contain pipes.'
         realName = callbacks.canonicalName(name)
         if name != realName:
-            raise AliasError,'That name isn\'t valid.  Try %r instead'%realName
+            s = 'That name isn\'t valid.  Try %r instead.' % realName
+            raise AliasError, s
         name = realName
         cbs = callbacks.findCallbackForCommand(irc, name)
         if [cb for cb in cbs if cb != self]:
-            raise AliasError, 'A command with the name %r already exists.'%name
+            s = 'A command with the name %r already exists.' % name
+            raise AliasError, s
         if name in self.frozen:
             raise AliasError, 'Alias %r is frozen.' % name
         try: