Mixed batch of minor bug fixes and cleanups.

src/commands/cmdhandler.py

@@ -120,13 +120,12 @@ def get_and_merge_cmdsets(caller):
         local_objects_cmdsets = [obj.cmdset.current
                                  for obj in local_objlist
                                  if obj.locks.check(caller, 'call', no_superuser_bypass=True)]
-
     # Merge all command sets into one
     # (the order matters, the higher-prio cmdsets are merged last)
     cmdset = caller_cmdset
     for obj_cmdset in [obj_cmdset for obj_cmdset in local_objects_cmdsets if obj_cmdset]:
         # Here only, object cmdsets are merged with duplicates=True
-        # (or we would never be able to differentiate between objects)
+        # (or we would never be able to differentiate between same-prio objects)
         try:
             old_duplicate_flag = obj_cmdset.duplicates
             obj_cmdset.duplicates = True
@@ -306,7 +305,7 @@ def cmdhandler(caller, raw_string, unloggedin=False, testing=False):
                 raise ExecSystemCommand(syscmd, sysarg)
 
             # Parse the input string into command candidates
-            cmd_candidates = COMMAND_PARSER(raw_string)            
+            cmd_candidates = COMMAND_PARSER(raw_string)
             
             #string ="Command candidates"
             #for cand in cmd_candidates:

src/commands/cmdset.py

@@ -131,10 +131,9 @@ class CmdSet(object):
                            
         priority- All cmdsets are always merged in pairs of two so that
                   the higher set's mergetype is applied to the
-                  lower-priority cmdset. Evennia uses priorities from 0-10
-                  where 10 are used for high-priority things like comsys
-                  channel names and 9 for exit names in order to give
-                  these priority when the given command matches.
+                  lower-priority cmdset. Default commands have priority 0, 
+                  high-priority ones like Exits and Channels have 10 and 9. Priorities
+                  can be negative as well to give default commands preference. 
         
         duplicates - determines what happens when two sets of equal
                      priority merge. Default has the first of them in the

src/commands/default/building.py

@@ -1018,6 +1018,8 @@ class CmdOpen(ObjManipCommand):
 
         else:
             # exit does not exist before. Create a new one.            
+            if not typeclass:
+                typeclass = settings.BASE_EXIT_TYPECLASS
             exit_obj = create.create_object(typeclass, key=exit_name,
                                             location=location,
                                             aliases=exit_aliases)

src/commands/default/cmdset_default.py

@@ -11,6 +11,7 @@ class DefaultCmdSet(CmdSet):
     Implements the default command set.
     """
     key = "DefaultMUX"
+    priority = 0
 
     def at_cmdset_creation(self):
         "Populates the cmdset"