Merged trunk r77296 into 2.9 branch.

Collector #1306: Missing acquisition context on local roles screen.

doc/CHANGES.txt

@@ -8,6 +8,8 @@ Zope Changes
 
    Bugs fixed
 
+      - Collector #1306: Missing acquisition context on local roles screen.
+
       - Collector #2153: Supporting unquoted cookies with spaces.
 
       - Collector #2295: Comments in PythonScripts could lead to syntax

lib/python/AccessControl/Role.py

@@ -341,11 +341,12 @@ class RoleManager(ExtensionClass.Base, PermissionMapping.RoleManager):
                 if mlu < 0: raise OverflowError
                 un = getattr(aclu, 'user_names', _notfound)
                 if un is not _notfound:
+                    un = aclu.__of__(item).user_names # rewrap
                     unl = un()
                     # maxlistusers of 0 is list all
                     if len(unl) > mlu and mlu != 0:
                         raise OverflowError
-                    for name in un():
+                    for name in unl:
                         dict[name]=1
             item = getattr(item, 'aq_parent', _notfound)
             if item is _notfound: