added index package for multikey dictionaries

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1512 fd906abe-77d9-0310-91a1-e0d9ade77398

index/README.txt

@@ -62,5 +62,5 @@ Index entries that are present in the stored dictionaries must always match:
 
   >>> registry[('edit.html', None, None, 'Custom')] = 'edit.html for Custom skin'
 
-  >>> registry.get(('edit.html', 'task', 'bugfixes', '')) is None
+  >>> registry.get(('edit.html', 'task', 'bugfixes')) is None
   True

index/multikey.py

@@ -68,8 +68,9 @@ class MultiKeyDict(dict):
             for r in rList:
                 skip = False
                 for nx, kx in enumerate(r[0]):
-                    if kx and kx != key[nx]: # if stored key elements are present
-                        skip = True          # they must match
+                    # if stored key elements are present they must match
+                    if kx and (len(key) <= nx or kx != key[nx]):
+                        skip = True
                         break
                 if skip:
                     continue